/* roulang page: index */
:root {
  --bg-body: #0B1015;
  --bg-panel: #131B23;
  --bg-card: #19232D;
  --bg-input: #101820;
  --primary: #17D6B3;
  --primary-hover: #0FBC9C;
  --accent: #F1B94B;
  --danger: #FF5E7A;
  --border: rgba(255,255,255,0.07);
  --border-strong: rgba(255,255,255,0.12);
  --text: #EDF1F5;
  --text-secondary: #A9B4C0;
  --text-muted: #71808F;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 10px 30px -20px rgba(0,0,0,0.65);
  --shadow-card-hover: 0 18px 40px -20px rgba(0,0,0,0.75);
  --shadow-btn: 0 8px 24px -10px rgba(23,214,179,0.65);
  --font-stack: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", "Roboto", "Helvetica", "Arial", sans-serif;
  --transition: all 0.2s ease-out;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background-color: var(--bg-body);
  color: var(--text);
  font-family: var(--font-stack);
  line-height: 1.7;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.18s ease-out;
}
a:hover {
  color: var(--primary);
}
button, input, select, textarea {
  font-family: inherit;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
.accordion-button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  box-shadow: none;
}
ul, ol {
  list-style: none;
}
.container-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(11,16,21,0.96);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}
.site-header .container-wrap {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  flex-shrink: 0;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: rgba(23,214,179,0.14);
  border: 1px solid rgba(23,214,179,0.45);
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}
.brand-mark i {
  font-style: normal;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand-text small {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--text-muted);
  margin-top: 3px;
  font-weight: 500;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link-main {
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border-radius: 40px;
  color: var(--text-secondary);
  font-size: 0.93rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: var(--transition);
}
.nav-link-main:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text);
}
.nav-link-main.active {
  background: rgba(23,214,179,0.12);
  color: var(--primary);
  border-color: rgba(23,214,179,0.2);
}
.nav-cta-area {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.btn-burger {
  display: none;
  border: 0;
  background: rgba(255,255,255,0.06);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: var(--text);
  font-size: 20px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.btn-burger:hover {
  background: rgba(23,214,179,0.2);
  color: var(--primary);
}

/* 抽屉菜单 */
.offcanvas-custom {
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  color: var(--text);
  width: 320px;
}
.offcanvas-custom .offcanvas-header {
  border-bottom: 1px solid var(--border);
}
.offcanvas-custom .offcanvas-body {
  display: flex;
  flex-direction: column;
}
.offcanvas-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.offcanvas-nav .nav-link-main {
  border-radius: 12px;
  padding: 14px 16px;
}
.offcanvas-custom .btn-download-main {
  justify-content: center;
  width: 100%;
  margin-top: 16px;
}

/* 按钮 */
.btn-download-main {
  height: 50px;
  padding: 0 22px;
  border-radius: 26px;
  background: var(--primary);
  color: #07100F;
  font-weight: 700;
  border: 0;
  font-size: 0.96rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-btn);
  transition: var(--transition);
}
.btn-download-main:hover {
  background: var(--primary-hover);
  color: var(--bg-body);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px -8px rgba(23,214,179,0.72);
}
.btn-download-main:active {
  transform: translateY(0);
}
.btn-download-main i {
  transition: transform 0.2s ease-out;
}
.btn-download-main:hover i {
  transform: translateX(4px);
}
.btn-ghost {
  height: 52px;
  padding: 0 24px;
  border-radius: 26px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-ghost:hover {
  border-color: rgba(23,214,179,0.5);
  color: var(--primary);
  background: rgba(23,214,179,0.06);
}
.btn-ghost:active {
  transform: scale(0.98);
}
.btn-download-lg {
  height: 58px;
  padding: 0 34px;
  border-radius: 30px;
  font-size: 1.04rem;
}
.btn-accent {
  background: var(--accent);
  box-shadow: 0 8px 24px -10px rgba(241,185,75,0.62);
  color: #1A1508;
}
.btn-accent:hover {
  background: #f6c86d;
  color: #101010;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background: URL("/assets/images/backpic/back-1.webp") center / cover no-repeat;
  border-bottom: 1px solid var(--border);
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,16,21,0.97) 0%, rgba(11,16,21,0.87) 34%, rgba(11,16,21,0.66) 100%);
  z-index: -1;
}
.hero::after {
  content: "9";
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(300px, 40vw, 540px);
  font-weight: 900;
  line-height: 1;
  color: var(--primary);
  opacity: 0.05;
  pointer-events: none;
  user-select: none;
  z-index: -1;
  letter-spacing: -0.08em;
}
.section-overline {
  color: var(--primary);
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
  font-weight: 600;
}
.section-overline::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.hero .h1-title {
  font-size: clamp(1.95rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}
.hero-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.86rem;
  padding: 6px 13px;
  border-radius: 22px;
}
.badge-item i {
  color: var(--primary);
  font-size: 0.8rem;
}
.hero-line {
  width: 100px;
  height: 2px;
  background: rgba(23,214,179,0.5);
  margin: 22px 0 0;
  border: 0;
}

/* ===== 通用区块 ===== */
.page-section {
  padding: clamp(3.5rem, 7vw, 5.6rem) 0;
  position: relative;
}
.section-head-center {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}
.section-head-left {
  margin-bottom: 40px;
  max-width: 720px;
}
.h2-title {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.3;
  color: var(--text);
}
.h2-title .text-primary-custom {
  color: var(--primary);
}
.lead-muted {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ===== 板块背景 ===== */
.section-alt {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-plain {
  background: var(--bg-body);
}
.section-card-bg {
  background: var(--bg-panel);
}

/* ===== 应用价值区 ===== */
.app-value-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 44px;
  align-items: center;
}
.value-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.value-visual img {
  width: 100%;
  height: 540px;
  object-fit: cover;
}
.value-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,16,21,0.45) 0%, transparent 42%);
}
.value-score-panel {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 2;
  background: rgba(19,27,35,0.86);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 20px;
  max-width: 230px;
}
.value-score-panel .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.value-score-panel .cap {
  color: var(--text-secondary);
  font-size: 0.82rem;
  margin-top: 6px;
}
	.value-list {
  display: grid;
  gap: 20px;
}
.value-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.value-block:hover {
  transform: translateY(-5px);
  border-color: rgba(23,214,179,0.3);
  box-shadow: var(--shadow-card-hover);
}
.value-block:nth-child(2) {
  margin-left: 30px;
}
.value-block:nth-child(3) {
  margin-left: 66px;
}
.value-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(23,214,179,0.13);
  border: 1px solid rgba(23,214,179,0.2);
  color: var(--primary);
  font-size: 1.16rem;
  margin-bottom: 18px;
}
.value-block h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.value-block p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ===== 功能轮播 ===== */
.carousel-wrap {
  position: relative;
  padding: 12px 0 28px;
}
.carousel-feature .carousel-inner {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.carousel-feature .carousel-item {
  min-height: 448px;
}
.carousel-feature .carousel-item img {
  width: 100%;
  height: 448px;
  object-fit: cover;
}
.feature-slide {
  position: relative;
}
.feature-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,16,21,0.88) 0%, transparent 45%);
}
.feature-slide-content {
  position: absolute;
  left: 40px;
  bottom: 38px;
  right: 30%;
  z-index: 2;
}
.feature-slide-content h3 {
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-slide-content p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.95rem;
}
.carousel-feature .carousel-control-prev,
.carousel-feature .carousel-control-next {
  width: 50px;
  height: 50px;
  background: rgba(19,27,35,0.86);
  border: 1px solid var(--border-strong);
  top: auto;
  bottom: 28px;
  border-radius: 50%;
  color: var(--text);
  opacity: 1;
  right: auto;
  left: 24px;
  transition: var(--transition);
}
.carousel-feature .carousel-control-next {
  left: 86px;
}
.carousel-feature .carousel-control-prev i,
.carousel-feature .carousel-control-next i {
  font-size: 1.35rem;
}
.carousel-feature .carousel-control-prev:hover,
.carousel-feature .carousel-control-next:hover {
  background: var(--primary);
  color: #07100F;
  border-color: var(--primary);
}
.carousel-feature .carousel-indicators {
  margin-right: 15%;
  margin-left: 15%;
  justify-content: flex-start;
  bottom: 34px;
}
.carousel-feature .carousel-indicators [data-bs-target] {
  width: 28px;
  height: 4px;
  border-radius: 20px;
  background-color: rgba(255,255,255,0.4);
  border: 0;
  transition: var(--transition);
}
.carousel-feature .carousel-indicators .active {
  background-color: var(--primary);
  width: 42px;
}

/* ===== 系统要求 ===== */
.spec-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 52px;
  align-items: center;
}
.spec-intro .btn-ghost {
  margin-top: 30px;
}
.spec-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 34px 32px;
  box-shadow: var(--shadow-card);
}
.spec-panel h3 {
  font-size: 1.1rem;
  font-weight: 700;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}
.spec-row {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.spec-row:last-child {
  border-bottom: 0;
}
.spec-icon {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border-radius: 13px;
  background: rgba(23,214,179,0.1);
  border: 1px solid rgba(23,214,179,0.2);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.spec-content {
  flex: 1;
}
.spec-label {
  font-weight: 600;
  margin-bottom: 2px;
  font-size: 0.98rem;
}
.spec-detail {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.spec-tag {
  font-size: 0.74rem;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  padding: 1px 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ===== 评价墙 ===== */
.reviews-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 42px;
  padding-bottom: 52px;
}
.rating-summary {
  display: flex;
  align-items: center;
  gap: 28px;
}
.rating-score {
  text-align: center;
}
.rating-score .score-num {
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.rating-score .score-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.rating-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 250px;
}
.rating-bar-row {
  display: grid;
  grid-template-columns: 48px 1fr 36px;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.82rem;
}
.rating-bar {
  height: 5px;
  background: var(--bg-card);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.05);
}
.rating-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(to right, var(--primary), #70E8C8);
  border-radius: 4px;
}
.rating-count {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-left: auto;
}
.reviews-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}
.review-col {
  flex: 1 1;
  min-width: 280px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 28px 22px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.review-card:nth-child(even) {
  transform: translateY(20px);
}
.review-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: rgba(23,214,179,0.3);
}
.review-stars {
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.review-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.avatar-line {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(23,214,179,0.35);
  background: rgba(23,214,179,0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 600;
}
.review-user-meta .name {
  font-size: 0.92rem;
  font-weight: 600;
}
.review-user-meta .device {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== 下载区 ===== */
.download-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: clamp(38px, 6vw, 70px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.download-panel::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  top: -200px;
  right: -150px;
  background: radial-gradient(circle, rgba(23,214,179,0.17), transparent 66%);
  pointer-events: none;
}
.download-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px 24px;
  margin: 34px 0 40px;
}
.qr-block {
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.qr-item {
  background: #FFFFFF;
  border-radius: 20px;
  padding: 12px;
  width: 140px;
  height: 172px;
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-btn);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}
.qr-item svg {
  width: 116px;
  height: 116px;
  display: block;
}
.qr-cap {
  font-size: 0.76rem;
  padding: 8px 0 4px;
  color: var(--bg-body);
  font-weight: 600;
}
.download-help-links {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.86rem;
  margin-top: 22px;
}
.download-help-links a {
  color: var(--text-secondary);
  border-bottom: 1px dashed rgba(255,255,255,0.2);
}
.download-help-links a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(23,214,179,0.2);
}
.faq-item .accordion-button {
  background: transparent;
  color: var(--text);
  font-weight: 600;
  font-size: 1.02rem;
  padding: 20px 24px;
  box-shadow: none;
  border: 0;
}
.faq-item .accordion-button::after {
  background-image: none;
  content: "\F64D";
  font-family: "bootstrap-icons";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  transform: none;
  transition: transform 0.2s;
  opacity: 0.9;
}
.faq-item .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  background-image: none;
}
.faq-item .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: rgba(23,214,179,0.06);
}
.faq-item .accordion-body {
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.8;
  padding: 0 24px 22px;
}

/* ===== 最新资讯 ===== */
.news-section {
  background: var(--bg-panel);
}
.news-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
}
.post-item {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  margin-bottom: 14px;
  transition: var(--transition);
  align-items: flex-start;
}
.post-item:hover {
  transform: translateY(-2px);
  border-color: rgba(23,214,179,0.3);
  box-shadow: var(--shadow-card);
}
.post-content {
  flex: 1;
  min-width: 0;
}
.post-title {
  font-size: 1.03rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  display: block;
  transition: color 0.18s;
}
.post-item:hover .post-title {
  color: var(--primary);
}
.post-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  color: var(--text-muted);
  font-size: 0.82rem;
}
.post-meta .cat-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(23,214,179,0.11);
  border: 1px solid rgba(23,214,179,0.2);
  color: var(--primary);
  padding: 2px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
}
.post-meta i {
  margin-right: 3px;
}
.post-read-link {
  color: var(--primary);
  font-size: 0.84rem;
  font-weight: 500;
  white-space: nowrap;
}
.news-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.side-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}
.side-card h3 {
  font-size: 1.04rem;
  font-weight: 700;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.side-card h3 i {
  color: var(--primary);
}
.side-cat-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.side-cat-list a {
  padding: 9px 8px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  display: flex;
  justify-content: space-between;
  transition: var(--transition);
}
.side-cat-list a:hover {
  color: var(--primary);
  background: rgba(23,214,179,0.08);
}
.side-func-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.side-func-list a {
  border: 1px solid var(--border-strong);
  border-radius: 30px;
  padding: 5px 14px;
  color: var(--text-secondary);
  font-size: 0.84rem;
  transition: var(--transition);
}
.side-func-list a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(23,214,179,0.08);
}
.news-empty {
  background: var(--bg-card);
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 42px 32px;
  text-align: center;
  color: var(--text-secondary);
}
.news-empty i {
  font-size: 2rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 14px;
}

/* ===== 联系合作区 ===== */
.contact-card {
  background: linear-gradient(120deg, rgba(14,22,30,0.9), rgba(25,35,45,0.92));
  border: 1px solid rgba(23,214,179,0.15);
  border-radius: var(--radius-xl);
  padding: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}
.contact-card .cap {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 6px;
}
.contact-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
}
.contact-card .contact-note {
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 620px;
  margin-top: 8px;
}
.contact-link-group {
  display: flex;
  gap: 15px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #081016;
  border-top: 1px solid var(--border);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
}
.footer-brand-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 18px 0 16px;
  max-width: 330px;
}
.footer-title {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.88rem;
}
.footer-contact-list i {
  color: var(--primary);
  margin-right: 8px;
}
.footer-sign {
  border-top: 1px solid var(--border);
  margin-top: 44px;
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 0.82rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.footer-sign small {
  display: inline-block;
}

/* ===== 响应式 ===== */
@media (max-width: 1180px) {
  .nav-link-main {
    padding: 8px 9px;
  }
}
@media (max-width: 991.98px) {
  .nav-menu {
    display: none;
  }
  .btn-burger {
    display: inline-flex;
  }
  .nav-cta-area .btn-download-main {
    display: none;
  }
  .app-value-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .value-visual img {
    height: 380px;
  }
  .spec-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .news-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .review-card:nth-child(even) {
    transform: translateY(0);
  }
  .hero {
    padding-top: 140px;
  }
}
@media (max-width: 767.98px) {
  .value-block:nth-child(2),
  .value-block:nth-child(3) {
    margin-left: 0;
  }
  .spec-panel {
    padding: 24px 18px;
  }
  .feature-slide-content {
    left: 22px;
    right: 18px;
    bottom: 20px;
  }
  .carousel-feature .carousel-item,
  .carousel-feature .carousel-item img {
    min-height: 340px;
    height: 340px;
  }
  .carousel-feature .carousel-control-prev,
  .carousel-feature .carousel-control-next {
    display: none;
  }
  .contact-card {
    padding: 24px;
  }
  .rating-summary {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    width: 100%;
  }
  .rating-count {
    margin-left: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .site-header {
    height: 64px;
  }
  .hero {
    padding-top: 120px;
    background-position: 70% center;
  }
  .navbar-brand .brand-text {
    font-size: 16px;
  }
}
@media (max-width: 520px) {
  .container-wrap {
    padding: 0 16px;
  }
  .brand-text small {
    display: none;
  }
  .download-panel {
    padding: 38px 16px;
  }
  .download-buttons .btn-download-main,
  .download-buttons .btn-ghost {
    width: 100%;
    justify-content: center;
  }
  .post-item {
    flex-direction: column;
    gap: 12px;
  }
  .post-read-link {
    white-space: normal;
  }
  .footer-sign {
    flex-direction: column;
  }
}

/* ===== 动效 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .carousel-item {
    transition: none;
  }
}
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* roulang page: article */
:root{
  --mint:#17D6B3;
  --mint-deep:#0FBC9C;
  --mint-soft:rgba(23,214,179,.12);
  --mint-line:rgba(23,214,179,.26);
  --amber:#F1B94B;
  --danger:#FF5E7A;
  --bg:#0B1015;
  --panel:#131B23;
  --panel-raised:#1a252f;
  --card:#19232D;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.13);
  --text:#EDF1F5;
  --muted:#A9B4C0;
  --weak:#71808F;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
  --radius-xl:26px;
  --shadow:0 10px 30px -20px rgba(0,0,0,.65);
  --shadow-hover:0 20px 44px -24px rgba(0,0,0,.82);
  --glow:0 8px 24px -10px rgba(23,214,179,.52);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Roboto","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.68,.35,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg); color:var(--text); font-family:var(--font); font-size:1rem; line-height:1.75; margin:0; -webkit-font-smoothing:antialiased}
body.article-body{background:linear-gradient(180deg, rgba(23,214,179,.025) 0, transparent 280px), var(--bg)}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin-top:0}
img{max-width:100%; display:inline-block; vertical-align:middle}
a{color:inherit; text-decoration:none; transition:color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease}
button,input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--mint); outline-offset:3px; border-radius:4px}
.container-wrap{width:100%; max-width:1200px; margin:0 auto; padding-left:20px; padding-right:20px}
.main-pad{padding-top:72px}
.reveal{opacity:1; transform:none; transition:opacity .45s ease, transform .45s var(--ease)}

/* header */
.site-header{
  position:fixed; left:0; right:0; top:0; height:72px; z-index:1000;
  background:rgba(11,16,21,.97); border-bottom:1px solid var(--line);
}
.header-shell{height:72px; display:flex; align-items:center; justify-content:space-between; gap:20px}
.navbar-brand{display:inline-flex; align-items:center; gap:10px; color:var(--text); white-space:nowrap}
.brand-mark{
  width:40px; height:40px; flex:0 0 40px; border-radius:12px; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(145deg, rgba(23,214,179,.22), rgba(23,214,179,.06));
  border:1px solid rgba(23,214,179,.34); box-shadow:var(--glow); color:var(--mint);
}
.brand-mark i{font-style:normal; font-weight:800; font-size:1.35rem; line-height:1}
.brand-text{font-size:1.25rem; font-weight:800; letter-spacing:.01em}
.brand-text small{color:var(--muted); font-weight:500; font-size:.9rem; margin-left:2px}
.header-right{display:flex; align-items:center; gap:8px}
.nav-menu{display:flex; align-items:center; gap:2px}
.nav-link-main{
  display:inline-flex; align-items:center; border-radius:999px; padding:.52rem .9rem;
  color:var(--muted); font-size:.92rem; font-weight:600; line-height:1; border:1px solid transparent;
}
.nav-link-main:hover{color:var(--mint); background:var(--mint-soft)}
.nav-link-main.active{color:var(--mint); background:var(--mint-soft); border-color:var(--mint-line)}
.btn-header{
  display:inline-flex; align-items:center; gap:8px; height:44px; padding:0 20px;
  border-radius:999px; border:none; font-weight:700; font-size:.92rem; color:#04100d;
  background:var(--mint); box-shadow:var(--glow); transition:all .2s ease;
}
.btn-header:hover{color:#04100d; background:var(--mint-deep); transform:translateY(-2px)}
.btn-header:active{transform:translateY(0)}
.menu-toggle{
  display:none; width:44px; height:44px; align-items:center; justify-content:center;
  background:transparent; color:var(--text); border:1px solid var(--line-strong); border-radius:14px; font-size:1.35rem;
}
.menu-toggle:hover{color:var(--mint); border-color:var(--mint-line)}
.mobile-panel{
  position:fixed; top:0; right:0; width:min(320px, 86vw); height:100dvh; z-index:1200;
  background:#0d151d; border-left:1px solid var(--line); transform:translateX(103%);
  transition:transform .28s var(--ease); display:flex; flex-direction:column; padding:20px 18px; visibility:hidden;
}
.mobile-panel.open{transform:translateX(0); visibility:visible}
.mobile-panel.active-panel{visibility:visible}
.mobile-panel-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:22px}
.panel-close{width:42px; height:42px; border-radius:12px; background:rgba(255,255,255,.04); border:1px solid var(--line); color:var(--text); display:flex; align-items:center; justify-content:center; font-size:1.2rem}
.panel-close:hover{color:var(--mint); border-color:var(--mint-line)}
.mobile-panel-links{display:flex; flex-direction:column; gap:6px; flex:1}
.mobile-panel-links a{display:block; padding:.8rem .9rem; border-radius:12px; color:var(--muted); font-weight:600; font-size:1rem}
.mobile-panel-links a:hover{color:var(--mint); background:var(--mint-soft)}
.mobile-panel-links a.active{color:var(--mint); background:var(--mint-soft)}
.btn-mobile-download{
  display:flex; align-items:center; justify-content:center; gap:10px; margin-top:16px; padding:14px 16px;
  border-radius:14px; background:var(--mint); color:#04100d; font-weight:800; font-size:.98rem; box-shadow:var(--glow);
}
.btn-mobile-download:hover{color:#04100d; background:var(--mint-deep)}
.mobile-backdrop{position:fixed; inset:0; z-index:1100; background:rgba(0,0,0,.68); opacity:0; visibility:hidden; transition:.25s ease}
.mobile-backdrop.show{opacity:1; visibility:visible}

/* page base */
.article-page-main{min-height:70vh}
.article-topband{
  border-bottom:1px solid var(--line); padding:124px 0 34px;
  background:radial-gradient(circle at 80% 10%, rgba(23,214,179,.07), transparent 36%),
             linear-gradient(180deg, rgba(19,27,35,.86), transparent 100%);
}
.breadcrumb-bar{margin-bottom:18px}
.breadcrumb-list{list-style:none; padding:0; margin:0; display:flex; flex-wrap:wrap; align-items:center; gap:6px; color:var(--weak); font-size:.86rem}
.breadcrumb-list li{display:inline-flex; align-items:center; gap:6px}
.breadcrumb-list li+li::before{content:"/"; color:rgba(255,255,255,.16)}
.breadcrumb-list a{color:var(--weak)}
.breadcrumb-list a:hover{color:var(--mint)}
.breadcrumb-list .is-current{color:var(--muted); max-width:360px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.article-heading-top{max-width:980px}
.section-kicker{
  display:inline-flex; align-items:center; gap:8px; color:var(--mint); font-weight:800; font-size:.82rem;
  letter-spacing:.04em; margin-bottom:14px;
}
.section-kicker::before{content:""; width:22px; height:2px; background:var(--mint); border-radius:99px}
.article-title{
  font-size:clamp(1.9rem, 4vw, 3.1rem); line-height:1.25; font-weight:800; color:var(--text);
  max-width:16em; margin:10px 0 0; letter-spacing:.01em;
}
.article-meta-row{
  margin-top:20px; display:flex; flex-wrap:wrap; gap:10px 14px; align-items:center; color:var(--muted);
  padding-bottom:5px;
}
.meta-slot{display:inline-flex; align-items:center; gap:7px; color:var(--muted); font-size:.88rem}
.meta-slot i{color:var(--mint)}
.meta-slot.text-weak{color:var(--weak)}
.meta-slot strong{color:var(--muted); font-weight:600}

/* article content column */
.article-content-area{padding-top:42px; padding-bottom:28px}
.article-shell{max-width:920px; margin:0 auto}
.article-card{
  background:rgba(25,35,45,.86); border:1px solid var(--line-strong); border-radius:24px;
  padding:clamp(24px, 4.4vw, 54px); box-shadow:var(--shadow);
}
.article-card-head{
  padding-bottom:28px; border-bottom:1px solid var(--line); margin-bottom:30px;
}
.article-content{
  font-size:1.06rem; line-height:2.05; color:#D9E2EA; word-break:break-word;
}
.article-content h2,
.article-content h3,
.article-content h4{color:var(--text); font-weight:750; margin-top:2.4em; margin-bottom:.85em}
.article-content h2{font-size:1.5rem; border-left:3px solid var(--mint); padding-left:13px}
.article-content h3{font-size:1.24rem}
.article-content h4{font-size:1.08rem}
.article-content p{margin-bottom:1.35em}
.article-content a{color:var(--mint); text-decoration:underline; text-decoration-color:rgba(23,214,179,.35); text-underline-offset:4px}
.article-content a:hover{color:var(--mint-deep); text-decoration-color:var(--mint)}
.article-content strong{color:#F2F6F9; font-weight:700}
.article-content ul,.article-content ol{margin:1.2em 0; padding-left:1.3em}
.article-content ul li{margin-bottom:.55em; list-style:none; position:relative; padding-left:20px}
.article-content ul li::before{content:""; position:absolute; left:0; top:.76em; width:7px; height:7px; border-radius:99px; background:var(--mint)}
.article-content ol li{margin-bottom:.55em}
.article-content blockquote{
  margin:1.8em 0; padding:1.1rem 1.3rem; background:rgba(241,185,75,.07); border-left:3px solid var(--amber);
  border-radius:12px; color:var(--muted);
}
.article-content img{border-radius:16px; margin:1.4em 0; border:1px solid var(--line); box-shadow:var(--shadow)}
.article-content hr{border-color:var(--line); margin:2em 0}
.article-content code{
  background:rgba(23,214,179,.08); border:1px solid rgba(23,214,179,.16); border-radius:6px;
  padding:.05rem .4rem; color:var(--mint); font-size:.92em;
}
.article-content pre{
  background:#0d141c; border:1px solid var(--line); border-radius:16px; padding:20px; overflow:auto;
  color:var(--text); line-height:1.8;
}
.article-content table{width:100%; margin:1.5em 0; border-collapse:collapse}
.article-content th,
.article-content td{border:1px solid var(--line); padding:.7rem .9rem}
.article-content th{background:rgba(255,255,255,.04); color:var(--text)}
.article-card-foot{
  border-top:1px solid var(--line); margin-top:46px; padding-top:24px; display:flex; flex-wrap:wrap;
  align-items:center; justify-content:space-between; gap:12px;
}
.foot-tags{display:flex; flex-wrap:wrap; gap:8px}
.foot-tag{
  display:inline-flex; align-items:center; gap:6px; padding:6px 13px; border-radius:99px;
  background:rgba(255,255,255,.045); border:1px solid var(--line-strong); color:var(--muted); font-size:.8rem;
}
.foot-tag i{color:var(--mint)}
.foot-tag:hover{color:var(--mint); border-color:var(--mint-line)}
.page-share{display:flex; align-items:center; gap:8px}
.share-label{font-size:.84rem; color:var(--weak)}
.share-link{
  display:inline-flex; align-items:center; gap:7px; padding:.5rem .85rem; background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong); color:var(--muted); border-radius:99px; font-size:.8rem;
}
.share-link:hover{color:var(--mint); border-color:var(--mint-line)}

/* info card after article */
.info-card-grid{display:grid; grid-template-columns:1fr 1.2fr; gap:18px; max-width:920px; margin:0 auto}
.info-note{
  border:1px solid rgba(23,214,179,.2); background:rgba(23,214,179,.045); border-radius:20px;
  padding:24px; color:var(--muted); display:flex; gap:14px;
}
.info-note i{font-size:1.6rem; color:var(--mint)}
.info-note h3{color:var(--text); margin-bottom:6px; font-size:1.16rem}
.info-note p{margin-bottom:0; font-size:.9rem; line-height:1.9}
.related-download-card{
  border:1px solid var(--amber); background:rgba(241,185,75,.06); border-radius:20px; padding:24px;
  color:var(--muted);
}
.related-download-card h3{color:var(--text); margin-bottom:4px; font-size:1.16rem}
.related-download-card p{margin-bottom:14px; font-size:.9rem}
.btn-simple{
  display:inline-flex; align-items:center; gap:8px; padding:.55rem 1.05rem; border-radius:999px;
  background:rgba(241,185,75,.13); border:1px solid rgba(241,185,75,.35); color:var(--amber); font-weight:700; font-size:.84rem;
}
.btn-simple:hover{background:rgba(241,185,75,.2); color:var(--amber)}

/* related list */
.section-block{padding:72px 0}
.related-section{max-width:1200px; margin:0 auto}
.related-section-title{margin-bottom:34px}
.related-section-title .section-kicker{margin-bottom:8px}
.related-section-title h2{font-size:1.8rem; margin:0}
.related-grid{display:grid; grid-template-columns:repeat(3, 1fr); gap:22px}
.related-post-card{
  border-radius:20px; background:var(--card); border:1px solid var(--line); overflow:hidden;
  box-shadow:var(--shadow); transition:transform .2s var(--ease), border-color .2s ease, box-shadow .2s ease;
}
.related-post-card:hover{border-color:rgba(23,214,179,.35); transform:translateY(-5px); box-shadow:var(--shadow-hover)}
.related-post-card .rp-cover{position:relative; aspect-ratio:16/9; overflow:hidden; background:#0e141c}
.related-post-card .rp-cover img{width:100%; height:100%; object-fit:cover; transition:transform .35s ease}
.related-post-card:hover .rp-cover img{transform:scale(1.04)}
.related-post-card .rp-body{padding:16px 18px 20px}
.related-post-card h3{margin:0 0 8px; font-size:1rem; line-height:1.5; font-weight:700; color:var(--text)}
.related-post-card h3 a:hover{color:var(--mint)}
.related-post-card .rp-meta{color:var(--weak); font-size:.8rem; display:flex; align-items:center; gap:10px}
.related-post-card .rp-meta i{color:var(--mint)}

/* bottom CTA */
.article-cta-band{
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:64px 0; background:radial-gradient(circle at 14% 30%, rgba(23,214,179,.05), transparent 28%);
}
.download-banner{
  background:linear-gradient(120deg, rgba(23,214,179,.1), rgba(23,214,179,.015) 45%, rgba(241,185,75,.04));
  border:1px solid rgba(23,214,179,.19); border-radius:28px; padding:clamp(24px, 4vw, 44px);
  display:flex; justify-content:space-between; align-items:center; gap:26px; flex-wrap:wrap;
}
.download-banner-copy{max-width:580px}
.download-banner-copy h2{font-size:clamp(1.4rem, 3%, 2rem); margin:4px 0 10px}
.download-banner-copy p{margin-bottom:0; color:var(--muted); line-height:1.9}
.download-banner-actions{display:flex; align-items:center; gap:12px; flex-wrap:wrap}
.btn-mint{
  display:inline-flex; align-items:center; gap:10px; padding:.9rem 1.6rem; border-radius:999px;
  background:var(--mint); color:#04100d; font-weight:800; box-shadow:var(--glow); border:none; line-height:1.35;
}
.btn-mint:hover{color:#04100d; background:var(--mint-deep); transform:translateY(-3px)}
.btn-mint:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex; align-items:center; gap:10px; padding:.9rem 1.5rem; border-radius:999px;
  background:transparent; color:var(--text); border:1px solid var(--line-strong); font-weight:700; line-height:1.35;
}
.btn-ghost:hover{border-color:var(--mint); color:var(--mint)}

/* empty state */
.content-missing{padding:60px 0}
.missing-card{
  max-width:680px; margin:0 auto; text-align:center; border:1px solid var(--line-strong);
  border-radius:28px; padding:56px 30px; background:rgba(25,35,45,.7); box-shadow:var(--shadow);
}
.missing-icon{
  width:70px; height:70px; display:flex; align-items:center; justify-content:center; margin:0 auto 22px;
  border-radius:24px; background:var(--mint-soft); color:var(--mint); font-size:2rem;
}
.missing-card h2{font-size:1.6rem; margin-bottom:10px}
.missing-card p{color:var(--muted)}
.missing-card a.btn-mint{margin-top:14px; display:inline-flex}

/* footer & mobile */
.site-footer{border-top:1px solid var(--line-strong); background:#0c1219; padding:68px 0 24px; margin-top:0}
.footer-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:36px; margin-bottom:42px}
.footer-brand-desc{color:var(--weak); font-size:.9rem; line-height:1.9; max-width:320px; margin-top:16px}
.footer-title{color:var(--text); font-size:1rem; font-weight:700; margin-bottom:18px}
.footer-links{display:flex; flex-direction:column; gap:10px}
.footer-links a{color:var(--weak); font-size:.9rem}
.footer-links a:hover{color:var(--mint)}
.footer-contact-list{display:flex; flex-direction:column; gap:12px; color:var(--weak); font-size:.88rem; line-height:1.8}
.footer-contact-list i{color:var(--mint); margin-right:7px}
.footer-sign{border-top:1px solid var(--line); padding-top:24px; display:flex; justify-content:space-between; gap:18px; flex-wrap:wrap; color:rgba(255,255,255,.33); font-size:.8rem}
.footer-sign small{display:block}

@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.25fr 1fr 1fr 1fr; gap:26px}
  .nav-link-main{padding:.5rem .68rem; font-size:.86rem}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .menu-toggle{display:flex}
  .btn-header .btn-header-label{display:none}
  .btn-header{width:44px; padding:0; justify-content:center}
  .article-title{font-size:clamp(1.85rem, 6vw, 2.8rem)}
  .footer-grid{grid-template-columns:1fr 1fr; gap:36px}
  .related-grid{grid-template-columns:1fr 1fr}
  .info-card-grid{grid-template-columns:1fr}
}
@media (max-width:575px){
  .container-wrap{padding-left:16px; padding-right:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-sign{flex-direction:column}
  .related-grid{grid-template-columns:1fr}
  .article-card{padding:22px 18px}
  .article-content{font-size:1rem}
  .download-banner-actions .btn-mint,
  .download-banner-actions .btn-ghost{width:100%; justify-content:center}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important; animation:none !important; scroll-behavior:auto}
  .menu-toggle i{animation:none}
}

/* roulang page: category1 */
:root{
    --color-bg:#0B1015;
    --color-panel:#131B23;
    --color-card:#19232D;
    --color-card-hover:#1E2A35;
    --color-border:rgba(255,255,255,0.07);
    --color-border-strong:rgba(255,255,255,0.14);
    --color-primary:#17D6B3;
    --color-primary-hover:#0FBC9C;
    --color-primary-soft:rgba(23,214,179,0.14);
    --color-accent:#F1B94B;
    --color-error:#FF5E7A;
    --color-text:#EDF1F5;
    --color-text-muted:#A9B4C0;
    --color-text-weak:#71808F;
    --radius-xs:6px;
    --radius-sm:8px;
    --radius-md:14px;
    --radius-lg:20px;
    --radius-xl:28px;
    --shadow-card:0 10px 30px -20px rgba(0,0,0,0.65);
    --shadow-hover:0 18px 40px -20px rgba(0,0,0,0.75);
    --font-stack:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
    --transition-standard:160ms ease-out;
    --ease-spring:240ms cubic-bezier(0.22,0.61,0.36,1);
}

*,
*::before,
*::after{box-sizing:border-box}

html{
    scroll-behavior:smooth;
    scroll-padding-top:88px;
}

body{
    margin:0;
    font-family:var(--font-stack);
    background:var(--color-bg);
    color:var(--color-text);
    font-size:1rem;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
}

img{
    max-width:100%;
    display:block;
}

a{
    text-decoration:none;
    color:inherit;
    transition:color var(--transition-standard), background-color var(--transition-standard), border-color var(--transition-standard);
}

button{
    font-family:inherit;
    border:none;
    background:none;
}

.container-wrap{
    width:min(1200px,88%);
    margin-inline:auto;
}

.section-pad{
    padding:88px 0;
}

.section-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--color-primary);
    font-size:0.85rem;
    font-weight:700;
    letter-spacing:0.12em;
    margin-bottom:14px;
}

.section-eyebrow::before{
    content:"";
    width:20px;
    height:2px;
    background:currentColor;
    border-radius:99px;
    opacity:0.7;
}

.section-title{
    font-size:clamp(1.55rem,3vw,2.1rem);
    font-weight:800;
    line-height:1.28;
    margin:0 0 18px;
    color:var(--color-text);
}

.section-subtitle{
    color:var(--color-text-muted);
    font-size:1rem;
    max-width:720px;
    margin-bottom:0;
}

/* header */
.site-header{
    position:sticky;
    top:0;
    z-index:1090;
    background:rgba(11,16,21,0.98);
    border-bottom:1px solid var(--color-border);
    backdrop-filter:blur(6px);
}

.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:76px;
    gap:18px;
}

.navbar-brand{
    display:inline-flex;
    align-items:center;
    gap:12px;
    color:var(--color-text);
    font-weight:800;
    font-size:1.18rem;
    white-space:nowrap;
}

.navbar-brand:hover{
    color:var(--color-text);
}

.brand-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:42px;
    height:42px;
    border-radius:14px;
    background:linear-gradient(135deg,var(--color-primary-soft),rgba(23,214,179,0.04));
    border:1px solid rgba(23,214,179,0.32);
    color:var(--color-primary);
    font-size:1.3rem;
    font-weight:900;
    box-shadow:0 0 26px -8px rgba(23,214,179,0.5);
}

.brand-text{
    letter-spacing:0.02em;
}

.header-nav-wrap{
    display:flex;
    align-items:center;
    gap:14px;
    min-width:0;
}

.nav-menu{
    display:flex;
    align-items:center;
    gap:2px;
    margin:0;
    padding:0;
    list-style:none;
}

.nav-link-main{
    position:relative;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:10px 14px;
    border-radius:99px;
    color:var(--color-text-muted);
    font-size:0.92rem;
    font-weight:600;
    line-height:1.2;
    transition:color var(--transition-standard), background-color var(--transition-standard);
}

.nav-link-main:hover{
    color:var(--color-text);
    background-color:rgba(255,255,255,0.06);
}

.nav-link-main.active{
    color:var(--color-primary);
    background-color:var(--color-primary-soft);
}

.nav-link-main:focus-visible,
.header-dl-btn:focus-visible,
.link-btn:focus-visible,
.hero-download-btn:focus-visible,
.dl-card-btn:focus-visible,
.events-link:focus-visible,
.mobile-dl-btn:focus-visible{
    outline:2px solid rgba(23,214,179,0.9);
    outline-offset:3px;
}

.header-dl-btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:44px;
    padding:0 22px;
    border-radius:99px;
    background:var(--color-primary);
    color:#0B1015;
    font-size:0.9rem;
    font-weight:800;
    white-space:nowrap;
    box-shadow:0 8px 24px -10px rgba(23,214,179,0.55);
    transition:transform var(--transition-standard),background-color var(--transition-standard),color var(--transition-standard),box-shadow var(--transition-standard);
}

.header-dl-btn:hover{
    color:#0B1015;
    background:var(--color-primary-hover);
    transform:translateY(-2px);
    box-shadow:0 12px 28px -10px rgba(23,214,179,0.6);
}

.header-dl-btn:active{
    transform:translateY(0);
}

.menu-toggle{
    display:none;
    width:46px;
    height:46px;
    border:1px solid var(--color-border-strong);
    border-radius:10px;
    align-items:center;
    justify-content:center;
    gap:5px;
    flex-direction:column;
    background:transparent;
    z-index:1102;
}

.menu-toggle span{
    display:block;
    width:18px;
    height:2px;
    border-radius:2px;
    background:var(--color-text);
}

.drawer-mask{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,0.72);
    z-index:1095;
    opacity:0;
    visibility:hidden;
    transition:opacity 220ms ease-out,visibility 220ms ease-out;
}

body.nav-open{
    overflow:hidden;
}

body.nav-open .drawer-mask{
    opacity:1;
    visibility:visible;
}

/* hero */
.category-hero{
    position:relative;
    background:
        linear-gradient(110deg, rgba(11,16,21,0.96) 10%, rgba(11,16,21,0.55) 52%, rgba(11,16,21,0.88) 100%),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
    padding:76px 0 104px;
    border-bottom:1px solid var(--color-border);
}

.category-hero::after{
    content:"9";
    position:absolute;
    right:3%;
    bottom:-8%;
    font-size:26vw;
    font-weight:900;
    line-height:1;
    color:rgba(23,214,179,0.045);
    pointer-events:none;
    user-select:none;
}

.hero-breadcrumb{
    position:relative;
    z-index:2;
    display:flex;
    align-items:center;
    gap:6px;
    color:var(--color-text-weak);
    font-size:0.85rem;
    margin-bottom:56px;
}

.hero-breadcrumb a{
    color:var(--color-text-muted);
}

.hero-breadcrumb a:hover{
    color:var(--color-primary);
}

.hero-breadcrumb i{
    font-size:0.8rem;
    opacity:0.6;
}

.hero-breadcrumb span{
    color:var(--color-text-weak);
}

.hero-content{
    position:relative;
    z-index:2;
    max-width:820px;
}

.hero-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--color-primary);
    font-size:0.86rem;
    font-weight:700;
    letter-spacing:0.12em;
    background:rgba(23,214,179,0.12);
    border:1px solid rgba(23,214,179,0.2);
    padding:7px 14px;
    border-radius:99px;
    margin-bottom:22px;
}

.hero-eyebrow::before{
    content:"\F26E";
    font-family:"bootstrap-icons";
    font-size:0.8rem;
}

.hero-title{
    margin:0 0 20px;
    font-size:clamp(1.9rem,5vw,3.4rem);
    font-weight:900;
    line-height:1.18;
    color:var(--color-text);
    letter-spacing:-0.02em;
}

.hero-title .text-brand{
    color:var(--color-primary);
}

.hero-lead{
    font-size:1.05rem;
    color:var(--color-text-muted);
    max-width:680px;
    line-height:1.85;
    margin-bottom:32px;
}

.hero-actions{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:14px;
}

.link-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:50px;
    padding:0 24px;
    border-radius:99px;
    font-size:0.96rem;
    font-weight:700;
    transition:background-color var(--transition-standard),color var(--transition-standard),transform var(--transition-standard),box-shadow var(--transition-standard);
}

.hero-download-btn{
    background:var(--color-primary);
    color:#0B1015;
    gap:10px;
    box-shadow:0 8px 24px -12px rgba(23,214,179,0.8);
}

.hero-download-btn:hover{
    color:#0B1015;
    background:var(--color-primary-hover);
    transform:translateY(-2px);
}

.hero-download-btn i{
    font-size:1.06rem;
}

.hero-line-btn{
    border:1px solid rgba(255,255,255,0.2);
    color:var(--color-text-muted);
    background:transparent;
}

.hero-line-btn:hover{
    border-color:rgba(23,214,179,0.5);
    color:var(--color-primary);
    background:rgba(23,214,179,0.06);
    transform:translateY(-2px);
}

/* content sections */
.section-soft{
    background:var(--color-panel);
    border-top:1px solid var(--color-border);
    border-bottom:1px solid var(--color-border);
}

.visual-card{
    position:relative;
    border-radius:var(--radius-xl);
    overflow:hidden;
    border:1px solid var(--color-border-strong);
    box-shadow:var(--shadow-card);
    background:var(--color-card);
}

.visual-card img{
    width:100%;
    min-height:320px;
    object-fit:cover;
    transition:transform 500ms ease-out;
}

.visual-card:hover img{
    transform:scale(1.02);
}

.visual-card-caption{
    position:absolute;
    left:16px;
    right:16px;
    bottom:16px;
    display:flex;
    align-items:center;
    gap:10px;
    background:rgba(11,16,21,0.8);
    border:1px solid rgba(23,214,179,0.18);
    border-radius:14px;
    padding:12px 14px;
    color:var(--color-text);
    font-size:0.88rem;
    backdrop-filter:blur(8px);
}

.visual-card-caption i{
    color:var(--color-primary);
    font-size:1.1rem;
}

/* spec mini panel */
.spec-list{
    display:flex;
    flex-direction:column;
    gap:14px;
    margin:24px 0 0;
    padding:0;
    list-style:none;
}

.spec-list li{
    display:flex;
    gap:12px;
    align-items:flex-start;
    background:var(--color-card);
    border:1px solid var(--color-border);
    border-radius:var(--radius-lg);
    padding:16px 18px;
    transition:border-color var(--transition-standard), transform var(--transition-standard), background-color var(--transition-standard);
}

.spec-list li:hover{
    border-color:rgba(23,214,179,0.35);
    background:var(--color-card-hover);
    transform:translateY(-2px);
}

.spec-icon{
    width:34px;
    height:34px;
    flex:0 0 34px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:var(--color-primary-soft);
    border-radius:10px;
    color:var(--color-primary);
    font-size:1rem;
}

.spec-info h3{
    font-size:0.95rem;
    font-weight:700;
    margin:0 0 5px;
    color:var(--color-text);
}

.spec-info p{
    font-size:0.88rem;
    color:var(--color-text-muted);
    margin:4px 0 0;
    line-height:1.6;
}

.spec-version{
    display:inline-flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:10px;
}

.version-badge{
    display:inline-flex;
    align-items:center;
    gap:5px;
    border-radius:8px;
    background:rgba(255,255,255,0.06);
    border:1px solid var(--color-border);
    padding:4px 10px;
    color:var(--color-text-muted);
    font-size:0.8rem;
}

/* timeline */
.step-intro-row{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:14px;
    align-items:flex-end;
    margin-bottom:42px;
}

.step-col-note{
    color:var(--color-text-weak);
    font-size:0.86rem;
    max-width:280px;
}

.timeline-card{
    position:relative;
    padding-left:8px;
}

.timeline-item{
    position:relative;
    display:grid;
    grid-template-columns:56px 1fr;
    gap:20px;
    padding:18px 0 22px;
}

.timeline-item:not(:last-child)::before{
    content:"";
    position:absolute;
    left:27px;
    top:52px;
    bottom:-6px;
    width:1px;
    background:rgba(23,214,179,0.2);
}

.timeline-node{
    position:relative;
    z-index:1;
    width:56px;
    height:56px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:18px;
    background:var(--color-card);
    border:1px solid rgba(23,214,179,0.25);
    color:var(--color-accent);
    font-weight:900;
    font-size:1.05rem;
    box-shadow:0 0 0 6px rgba(23,214,179,0.04);
}

.timeline-content{
    background:var(--color-card);
    border:1px solid var(--color-border);
    border-radius:var(--radius-lg);
    padding:18px 22px;
    transition:border-color var(--transition-standard), transform var(--transition-standard);
}

.timeline-item:hover .timeline-content{
    border-color:rgba(23,214,179,0.32);
    transform:translateY(-2px);
}

.timeline-content h3{
    color:var(--color-text);
    font-size:1.08rem;
    font-weight:800;
    margin:0 0 6px;
}

.timeline-content p{
    color:var(--color-text-muted);
    font-size:0.93rem;
    line-height:1.75;
    margin:0;
}

.timeline-tips{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:12px;
}

.soft-tag{
    display:inline-flex;
    align-items:center;
    gap:5px;
    background:rgba(255,255,255,0.05);
    border:1px solid var(--color-border);
    border-radius:99px;
    color:var(--color-text-weak);
    font-size:0.78rem;
    padding:4px 11px;
    line-height:1.4;
}

.soft-tag .bi{
    color:var(--color-primary);
}

/* security split */
.security-section{
    position:relative;
    overflow:hidden;
    background:
        radial-gradient(circle at 90% 20%,rgba(23,214,179,0.05),transparent 38%),
        var(--color-bg);
}

.image-frame{
    border-radius:var(--radius-xl);
    overflow:hidden;
    border:1px solid var(--color-border);
    box-shadow:var(--shadow-card);
}

.image-frame img{
    width:100%;
    height:100%;
    object-fit:cover;
}

.security-panel{
    background:var(--color-panel);
    border:1px solid var(--color-border);
    border-radius:var(--radius-xl);
    padding:32px 32px 30px;
}

.security-title{
    font-size:1.5rem;
    font-weight:800;
    margin:0 0 14px;
    line-height:1.35;
}

.security-points{
    margin:24px 0 0;
    padding:0;
    list-style:none;
    display:flex;
    flex-direction:column;
    gap:12px;
}

.security-points li{
    display:flex;
    gap:13px;
    align-items:flex-start;
    padding:16px 18px;
    background:var(--color-card);
    border:1px solid var(--color-border);
    border-radius:16px;
    transition:border-color var(--transition-standard), transform var(--transition-standard);
}

.security-points li:hover{
    border-color:rgba(23,214,179,0.32);
    transform:translateX(4px);
}

.security-points .point-icon{
    flex:0 0 26px;
    width:26px;
    height:26px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:8px;
    color:var(--color-accent);
    background:rgba(241,185,75,0.1);
    font-size:0.9rem;
}

.security-points .point-copy strong{
    display:block;
    font-size:0.94rem;
    font-weight:750;
    color:var(--color-text);
    margin-bottom:4px;
}

.security-points .point-copy span{
    color:var(--color-text-muted);
    font-size:0.88rem;
    line-height:1.65;
}

/* verification grid */
.check-grid .check-card{
    background:var(--color-card);
    border:1px solid var(--color-border);
    border-radius:var(--radius-lg);
    padding:26px;
    height:100%;
    transition:transform var(--transition-standard), border-color var(--transition-standard), background-color var(--transition-standard);
}

.check-grid .check-card:hover{
    transform:translateY(-6px);
    background:var(--color-card-hover);
    border-color:rgba(23,214,179,0.35);
    box-shadow:var(--shadow-hover);
}

.check-card .check-index{
    color:var(--color-accent);
    font-size:0.86rem;
    font-weight:800;
    letter-spacing:0.06em;
    opacity:0.85;
}

.check-card h3{
    color:var(--color-text);
    font-size:1.06rem;
    font-weight:800;
    margin:14px 0 10px;
    line-height:1.4;
}

.check-card p{
    color:var(--color-text-muted);
    font-size:0.92rem;
    line-height:1.75;
    margin:0;
}

.divider-accent{
    border:0;
    border-top:1px solid var(--color-border);
    opacity:1;
    margin:0;
}

/* FAQ */
.faq-inner{
    max-width:880px;
    margin:0 auto;
}

.faq-item{
    background:var(--color-card) !important;
    border:1px solid var(--color-border) !important;
    border-radius:16px;
    margin-bottom:12px;
    overflow:hidden;
    transition:border-color var(--transition-standard), background-color var(--transition-standard);
}

.faq-item:hover{
    border-color:rgba(23,214,179,0.25) !important;
}

.faq-item .accordion-button{
    background:transparent;
    color:var(--color-text);
    font-size:1rem;
    font-weight:700;
    padding:18px 22px;
    box-shadow:none !important;
    outline:none;
    border-bottom:1px solid transparent;
    transition:background-color var(--transition-standard);
}

.faq-item .accordion-button::after{
    content:"\F64D";
    font-family:"bootstrap-icons";
    background:none !important;
    width:auto;
    height:auto;
    color:var(--color-text-weak);
    font-size:0.9rem;
    opacity:0.8;
    transition:transform 220ms ease-out;
}

.faq-item .accordion-button:not(.collapsed){
    background:rgba(23,214,179,0.06);
    color:var(--color-primary);
}

.faq-item .accordion-button:not(.collapsed)::after{
    transform:rotate(180deg);
    color:var(--color-primary);
}

.faq-item .accordion-button.collapsed{
    border-bottom-color:transparent;
}

.faq-item .accordion-button:not(.collapsed){
    border-bottom-color:rgba(23,214,179,0.14);
}

.faq-answer{
    background:rgba(11,16,21,0.36);
    color:var(--color-text-muted);
    font-size:0.94rem;
    line-height:1.85;
    padding:12px 22px 20px;
}

/* CTA download */
.download-cta-section{
    padding:80px 0 96px;
    background:
        radial-gradient(circle at 70% 35%, rgba(23,214,179,0.08), transparent 42%),
        var(--color-panel);
    border-bottom:1px solid var(--color-border);
}

.download-card{
    background:var(--color-card);
    border:1px solid rgba(23,214,179,0.16);
    border-radius:32px;
    padding:52px;
    box-shadow:0 24px 60px -28px rgba(0,0,0,0.85);
    overflow:hidden;
}

.download-cta-title{
    font-size:clamp(1.8rem,4vw,2.6rem);
    font-weight:900;
    color:var(--color-text);
    margin:0 0 16px;
    line-height:1.25;
}

.download-cta-desc{
    color:var(--color-text-muted);
    font-size:1rem;
    max-width:620px;
    margin-bottom:34px;
}

.download-action-wrap{
    display:flex;
    align-items:flex-start;
    flex-wrap:wrap;
    gap:34px;
}

.download-button-list{
    display:flex;
    flex-direction:column;
    gap:14px;
    flex:1 1 340px;
}

.dl-card-btn{
    display:flex;
    align-items:center;
    gap:16px;
    padding:13px 18px;
    height:auto;
    min-height:62px;
    border-radius:16px;
    width:100%;
    color:var(--color-text);
    background:rgba(255,255,255,0.04);
    border:1px solid var(--color-border-strong);
    text-align:left;
    transition:transform var(--transition-standard),border-color var(--transition-standard),background-color var(--transition-standard);
}

.dl-card-btn .dl-icon{
    width:42px;
    height:42px;
    border-radius:12px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:var(--color-primary-soft);
    color:var(--color-primary);
    font-size:1.35rem;
    flex:0 0 42px;
}

.dl-card-btn .dl-text{
    line-height:1.25;
}

.dl-card-btn .dl-text small{
    display:block;
    color:var(--color-text-weak);
    font-size:0.80rem;
    font-weight:600;
}

.dl-card-btn .dl-text strong{
    font-size:1.02rem;
    color:var(--color-text);
}

.dl-card-btn .dl-cursor{
    margin-left:auto;
    color:var(--color-primary);
    opacity:0.7;
    transition:transform var(--transition-standard),opacity var(--transition-standard);
}

.dl-card-btn:hover{
    border-color:rgba(23,214,179,0.6);
    background:rgba(23,214,179,0.06);
    transform:translateY(-3px);
}

.dl-card-btn:hover .dl-cursor{
    transform:translateX(4px);
    opacity:1;
}

.dl-card-btn.is-primary{
    background:var(--color-primary);
    border-color:var(--color-primary);
    color:#0B1015;
}

.dl-card-btn.is-primary .dl-icon{
    background:rgba(11,16,21,0.15);
    color:#0B1015;
}

.dl-card-btn.is-primary .dl-text small{
    color:rgba(11,16,21,0.7);
}

.dl-card-btn.is-primary .dl-text strong{
    color:#0B1015;
}

.dl-card-btn.is-primary .dl-cursor{
    color:#0B1015;
}

.dl-card-btn.is-primary:hover{
    background:var(--color-primary-hover);
    border-color:var(--color-primary-hover);
}

.qr-side{
    flex:0 0 auto;
    width:200px;
    background:rgba(255,255,255,0.04);
    border:1px solid var(--color-border-strong);
    border-radius:22px;
    padding:20px 18px;
    text-align:center;
}

.qr-fake-frame{
    width:128px;
    height:128px;
    margin:0 auto;
    background:#fff;
    border-radius:6px;
    padding:8px;
}

.qr-svg{
    width:100%;
    height:100%;
    display:block;
}

.qr-side-caption{
    display:flex;
    flex-direction:column;
    gap:5px;
    align-items:center;
    margin-top:12px;
    color:var(--color-text-weak);
    font-size:0.82rem;
    line-height:1.4;
}

.qr-side-caption strong{
    color:var(--color-text);
    font-size:0.88rem;
}

.download-safe-note{
    margin-top:28px;
    display:flex;
    align-items:center;
    gap:9px;
    color:var(--color-text-weak);
    font-size:0.84rem;
    background:rgba(11,16,21,0.45);
    border:1px solid var(--color-border);
    border-radius:12px;
    padding:10px 14px;
}

.download-safe-note i{
    color:var(--color-primary);
}

/* text page bottom sub links maybe */
.last-tip-line{
    padding:44px 0 80px;
}

.last-tip-row{
    background:var(--color-panel);
    border:1px solid var(--color-border);
    border-radius:var(--radius-lg);
    padding:34px;
    display:flex;
    align-items:flex-start;
    gap:18px;
}

.last-tip-row .tip-mark{
    width:42px;
    height:42px;
    flex:0 0 42px;
    border-radius:12px;
    background:var(--color-primary-soft);
    color:var(--color-primary);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:1.1rem;
}

.last-tip-row h2{
    font-size:1.2rem;
    margin:0 0 8px;
    font-weight:800;
}

.last-tip-row p{
    margin:0;
    color:var(--color-text-muted);
    font-size:0.93rem;
}

/* footer */
.site-footer{
    background:#0A0F14;
    border-top:1px solid var(--color-border);
    padding-top:74px;
}

.footer-grid{
    display:grid;
    grid-template-columns:1.6fr 0.8fr 1fr 1.1fr;
    gap:36px;
    padding-bottom:56px;
}

.footer-brand-desc{
    color:var(--color-text-weak);
    font-size:0.92rem;
    line-height:1.8;
    max-width:320px;
    margin:22px 0 0;
}

.footer-title{
    color:var(--color-text);
    font-size:0.96rem;
    font-weight:800;
    margin:6px 0 18px;
    letter-spacing:0.02em;
}

.footer-links{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
}

.footer-links a{
    color:var(--color-text-weak);
    font-size:0.9rem;
    line-height:1.6;
    transition:color var(--transition-standard),transform var(--transition-standard);
}

.footer-links a:hover{
    color:var(--color-primary);
    transform:translateX(3px);
}

.footer-contact-list{
    display:flex;
    flex-direction:column;
    gap:12px;
}

.footer-contact-list span{
    display:flex;
    align-items:center;
    gap:10px;
    color:var(--color-text-weak);
    font-size:0.9rem;
}

.footer-contact-list span i{
    color:var(--color-primary);
}

.footer-sign{
    border-top:1px solid var(--color-border);
    display:flex;
    flex-direction:column;
    gap:8px;
    padding:20px 0 28px;
    font-size:0.83rem;
    color:var(--color-text-weak);
}

.footer-sign small{
    font-size:0.82rem;
}

/* reveal */
.reveal{
    opacity:0;
    transform:translateY(14px);
    transition:opacity 620ms cubic-bezier(0.22,0.61,0.36,1),transform 620ms cubic-bezier(0.22,0.61,0.36,1);
}

.reveal.is-visible{
    opacity:1;
    transform:none;
}

@media (prefers-reduced-motion:reduce){
    *,
    *::before,
    *::after{
        animation-duration:0.001s !important;
        animation-iteration-count:1 !important;
        transition-duration:0.001s !important;
        scroll-behavior:auto !important;
        transform:none !important;
    }
    .reveal{
        opacity:1;
        transform:none;
    }
}

/* responsive */
@media (max-width:991.98px){

    .header-nav-wrap{
        position:fixed;
        top:0;
        right:0;
        bottom:0;
        width:min(360px,86vw);
        background:var(--color-panel);
        border-left:1px solid var(--color-border-strong);
        flex-direction:column;
        align-items:flex-start;
        justify-content:flex-start;
        gap:18px;
        padding:72px 24px 30px;
        transform:translateX(105%);
        transition:transform 300ms ease-out;
        z-index:1100;
        overflow-y:auto;
        box-shadow:-30px 0 60px rgba(0,0,0,0.4);
        border-radius:26px 0 0 0;
    }

    body.nav-open .header-nav-wrap{
        transform:translateX(0);
    }

    .nav-menu{
        flex-direction:column;
        align-items:stretch;
        gap:6px;
        width:100%;
    }

    .nav-link-main{
        padding:15px 18px;
        justify-content:flex-start;
        border-radius:12px;
        font-size:0.98rem;
    }

    .header-dl-btn{
        width:100%;
        justify-content:center;
        height:50px;
    }

    .menu-toggle{
        display:inline-flex;
    }
}

@media (max-width:767.98px){

    .container-wrap{
        width:min(100% - 32px,1200px);
    }

    .section-pad{
        padding:60px 0;
    }

    .category-hero{
        padding:48px 0 70px;
    }

    .hero-breadcrumb{
        margin-bottom:34px;
    }

    .hero-actions{
        flex-direction:column;
        align-items:stretch;
    }

    .hero-actions .link-btn{
        width:100%;
    }

    .footer-grid{
        grid-template-columns:1fr 1fr;
        gap:28px;
    }

    .download-card{
        padding:26px 20px;
    }

    .download-safe-note{
        align-items:flex-start;
    }

    .qr-side{
        width:100%;
    }

    .qr-fake-frame{
        width:110px;
        height:110px;
    }

    .security-panel{
        padding:22px;
    }

    .last-tip-row{
        flex-direction:column;
    }

    .timeline-item{
        grid-template-columns:42px 1fr;
        gap:16px;
    }

    .timeline-node{
        width:42px;
        height:42px;
        border-radius:13px;
        font-size:0.9rem;
    }

    .timeline-item:not(:last-child)::before{
        left:20px;
    }
}

@media (max-width:520px){
    .footer-grid{
        grid-template-columns:1fr;
    }

    .section-title{
        font-size:1.5rem;
    }

    .security-points li{
        flex-direction:column;
    }
}

/* roulang page: category2 */
:root {
    --mint: #17D6B3;
    --mint-hover: #0FBC9C;
    --amber: #F1B94B;
    --danger: #FF5E7A;
    --bg-deep: #0B1015;
    --panel: #131B23;
    --card: #19232D;
    --line: rgba(255, 255, 255, 0.07);
    --line-strong: rgba(255, 255, 255, 0.13);
    --text-main: #EDF1F5;
    --text-sub: #A9B4C0;
    --text-weak: #71808F;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-card: 0 10px 30px -20px rgba(0, 0, 0, 0.65);
    --shadow-hover: 0 18px 40px -20px rgba(0, 0, 0, 0.75);
    --glow: 0 8px 24px -10px rgba(23, 214, 179, 0.55);
    --ease: all 0.22s ease-out;
    --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", "Roboto", "Helvetica", "Arial", sans-serif;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background-color: var(--bg-deep);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.8;
    overflow-x: hidden;
  }

  body.menu-open {
    height: 100vh;
    overflow: hidden;
  }

  .skip-top {
    position: absolute;
    left: -9999px;
    z-index: 9999;
    background: var(--mint);
    color: #08120F;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
  }

  .skip-top:focus {
    left: 16px;
    top: 8px;
  }

  img {
    max-width: 100%;
    display: block;
    height: auto;
  }

  a {
    color: var(--mint);
    text-decoration: none;
    transition: var(--ease);
  }

  a:hover {
    color: var(--mint-hover);
  }

  button {
    font-family: inherit;
  }

  .container-wrap {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .section-block {
    padding: 72px 0;
  }

  .section-block + .section-block {
    border-top: 1px solid var(--line);
  }

  .sec-header {
    margin-bottom: 42px;
  }

  .sec-header.center {
    text-align: center;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
  }

  .section-eyebrow {
    display: inline-block;
    color: var(--mint);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
  }

  .section-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.33;
    margin-bottom: 14px;
    color: var(--text-main);
  }

  .section-desc {
    color: var(--text-sub);
    font-size: 1rem;
    max-width: 780px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-md);
    min-height: 46px;
    padding: 10px 24px;
    font-weight: 600;
    letter-spacing: 0.01em;
    border: 1px solid transparent;
    transition: var(--ease);
    white-space: nowrap;
  }

  .btn:hover,
  .btn:focus-visible {
    color: #fff;
    transform: translateY(-2px);
    outline: none;
  }

  .btn:active {
    transform: translateY(0);
  }

  .btn-mint {
    background-color: var(--mint);
    border-color: var(--mint);
    color: #06231D;
    box-shadow: var(--glow);
  }

  .btn-mint:hover {
    background-color: var(--mint-hover);
    border-color: var(--mint-hover);
    color: #fff;
  }

  .btn-mint:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 3px;
  }

  .btn-ghost {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--text-main);
  }

  .btn-ghost:hover {
    border-color: var(--mint);
    color: var(--mint);
    background: rgba(23, 214, 179, 0.08);
  }

  .btn-ghost:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 3px;
  }

  .btn-small {
    min-height: 38px;
    padding: 6px 16px;
    border-radius: 10px;
    font-size: 0.88rem;
  }

  /* Header */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    background: rgba(11, 16, 21, 0.96);
    border-bottom: 1px solid var(--line);
    height: 72px;
    display: flex;
    align-items: center;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    width: 100%;
    height: 100%;
  }

  .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.02em;
  }

  .navbar-brand:hover {
    color: var(--text-main);
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--mint);
    color: #041b15;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    flex: 0 0 auto;
    box-shadow: 0 0 0 1px rgba(23, 214, 179, 0.2);
  }

  .brand-mark i {
    font-style: normal;
    transform: rotate(-8deg);
  }

  .brand-text {
    font-size: 1rem;
    line-height: 1.2;
    white-space: nowrap;
  }

  .nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .nav-menu a {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--text-sub);
    font-weight: 500;
    font-size: 0.92rem;
  }

  .nav-menu a:hover {
    color: var(--mint);
    background: rgba(23, 214, 179, 0.08);
  }

  .nav-menu a.active,
  .nav-menu a[aria-current="page"] {
    color: var(--mint);
    background: rgba(23, 214, 179, 0.12);
    font-weight: 600;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .header-download-btn {
    min-height: 44px;
    padding: 8px 20px;
    border-radius: 999px;
  }

  .header-download-btn i {
    font-size: 1rem;
    line-height: 1;
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--panel);
    border: 1px solid var(--line-strong);
    color: var(--text-main);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
  }

  .menu-toggle:hover {
    background: var(--card);
    color: var(--mint);
  }

  .menu-toggle:focus-visible,
  .offcanvas-close:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 3px;
  }

  /* Mobile offcanvas drawer */
  .mobile-nav-drawer {
    background: var(--panel);
    color: var(--text-main);
    border-left: 1px solid var(--line);
    width: 300px;
  }

  .mobile-nav-drawer .offcanvas-header {
    padding: 20px 22px 10px;
    border-bottom: 1px solid var(--line);
  }

  .mobile-nav-drawer .offcanvas-body {
    display: flex;
    flex-direction: column;
    gap: 22px;
    padding: 24px 22px 32px;
  }

  .mobile-drawer-menu {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .mobile-drawer-menu a {
    display: block;
    color: var(--text-sub);
    border-radius: 12px;
    font-size: 1.05rem;
    padding: 12px 16px;
  }

  .mobile-drawer-menu a:hover,
  .mobile-drawer-menu a.active {
    color: var(--mint);
    background: rgba(23, 214, 179, 0.09);
  }

  .offcanvas-close {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Category hero / breadcrumb */
  .page-hero {
    background-color: var(--bg-deep);
    background-image: linear-gradient(180deg, rgba(11, 16, 21, 0.62), rgba(11, 16, 21, 0.97)), url("/assets/images/backpic/back-2.png");
    background-position: center;
    background-size: cover;
    padding: 160px 0 88px;
  }

  .breadcrumb-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 0.88rem;
    color: var(--text-weak);
    margin-bottom: 38px;
  }

  .breadcrumb-nav a {
    color: var(--text-weak);
  }

  .breadcrumb-nav a:hover {
    color: var(--mint);
  }

  .breadcrumb-sep {
    display: inline-block;
    color: var(--text-weak);
    opacity: 0.5;
  }

  .page-hero .page-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--mint);
    background: rgba(23, 214, 179, 0.08);
    border: 1px solid rgba(23, 214, 179, 0.15);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.82rem;
    margin-bottom: 18px;
  }

  .page-hero h1 {
    font-size: clamp(1.9rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.22;
    color: var(--text-main);
    margin-bottom: 18px;
    max-width: 11em;
  }

  .page-hero h1 .text-mint {
    color: var(--mint);
  }

  .page-hero .page-lead {
    color: var(--text-sub);
    font-size: 1.02rem;
    max-width: 680px;
    margin-bottom: 34px;
  }

  .page-hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
  }

  .hero-meta-note {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 24px;
    margin-top: 32px;
    color: var(--text-weak);
    font-size: 0.9rem;
    padding-top: 22px;
    border-top: 1px solid var(--line);
  }

  .hero-meta-note span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .hero-meta-note i {
    color: var(--mint);
  }

  /* Safety overview split */
  .safety-overview {
    padding: 92px 0;
    overflow: hidden;
  }

  .vo-block {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 62px;
    align-items: center;
  }

  .vo-copy h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 16px;
  }

  .vo-copy .vo-desc {
    color: var(--text-sub);
    margin-bottom: 28px;
  }

  .feature-line-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }

  .feature-line-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
  }

  .feature-line-icon {
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    border-radius: 10px;
    background: rgba(23, 214, 179, 0.1);
    color: var(--mint);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    border: 1px solid rgba(23, 214, 179, 0.16);
  }

  .feature-line-item h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 2px;
  }

  .feature-line-item p {
    color: var(--text-sub);
    font-size: 0.94rem;
    margin-bottom: 0;
    max-width: 520px;
  }

  .vo-visual {
    position: relative;
  }

  .vo-media-card {
    border-radius: var(--radius-xl);
    background: var(--card);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transform: rotate(1.2deg);
  }

  .vo-media-card img {
    width: 100%;
    object-fit: cover;
    min-height: 340px;
  }

  .vo-float-card {
    position: absolute;
    right: -14px;
    bottom: 26px;
    background: rgba(19, 27, 35, 0.94);
    border: 1px solid rgba(23, 214, 179, 0.25);
    border-radius: 18px;
    padding: 16px 18px;
    max-width: 230px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    box-shadow: var(--shadow-hover);
    backdrop-filter: blur(6px);
  }

  .vo-float-card i {
    color: var(--mint);
    font-size: 1.5rem;
  }

  .vo-float-card p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--text-main);
    line-height: 1.6;
  }

  .vo-float-card small {
    color: var(--text-weak);
    display: block;
  }

  /* Big number procedure */
  .safety-procedure {
    background: var(--panel);
    padding: 90px 0;
  }

  .procedure-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 48px;
    margin-top: 18px;
  }

  .procedure-item {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 22px;
    padding: 28px 8px 16px 0;
  }

  .procedure-num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--amber);
    letter-spacing: -0.04em;
    opacity: 0.75;
    line-height: 1.1;
  }

  .procedure-body h3 {
    font-size: 1.18rem;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .procedure-body h3 span {
    color: var(--mint);
  }

  .procedure-body p {
    color: var(--text-sub);
    font-size: 0.96rem;
    margin-bottom: 0;
  }

  /* Full width plate */
  .warning-plate {
    position: relative;
    border-radius: 0;
    background: linear-gradient(90deg, rgba(19, 27, 35, 0.96), rgba(19, 27, 35, 0.68)), url("/assets/images/backpic/back-3.webp") center / cover;
    padding: 78px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .warning-plate .plate-title {
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 12px;
  }

  .warning-plate p {
    color: var(--text-sub);
    max-width: 660px;
    font-size: 0.98rem;
    margin-bottom: 20px;
  }

  .notice-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(23, 214, 179, 0.07);
    border: 1px solid rgba(23, 214, 179, 0.2);
    padding: 10px 18px;
    border-radius: 999px;
    color: var(--mint);
    font-size: 0.9rem;
    font-weight: 500;
  }

  .warning-plate .notice-pill i {
    color: var(--amber);
  }

  /* Structured list */
  .safety-status {
    background: var(--bg-deep);
    padding: 88px 0;
  }

  .status-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .status-card {
    display: flex;
    gap: 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--ease);
    box-shadow: var(--shadow-card);
  }

  .status-card:hover {
    border-color: rgba(23, 214, 179, 0.35);
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
  }

  .status-glyph {
    flex: 0 0 46px;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(241, 185, 75, 0.1);
    border: 1px solid rgba(241, 185, 75, 0.18);
    color: var(--amber);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
  }

  .status-card:nth-child(2) .status-glyph,
  .status-card:nth-child(5) .status-glyph {
    background: rgba(23, 214, 179, 0.1);
    border-color: rgba(23, 214, 179, 0.18);
    color: var(--mint);
  }

  .status-card h3 {
    font-size: 1.02rem;
    font-weight: 650;
    margin-bottom: 6px;
  }

  .status-card p {
    margin: 0;
    color: var(--text-sub);
    font-size: 0.94rem;
  }

  .status-card .status-tag {
    margin-top: 12px;
  }

  .status-tag {
    display: inline-flex;
    align-items: center;
    font-size: 0.82rem;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 999px;
    padding: 4px 12px;
    color: var(--text-main);
    border: 1px solid var(--line);
  }

  /* FAQ */
  .faq-section {
    background: var(--panel);
    padding: 90px 0;
  }

  .faq-wrap {
    max-width: 820px;
    margin: 0 auto;
  }

  .faq-accordion-item {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 18px;
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }

  .faq-accordion-item:has(.accordion-button:not(.collapsed)) {
    border-color: rgba(23, 214, 179, 0.45);
  }

  .accordion-button {
    background: var(--card) !important;
    color: var(--text-main) !important;
    padding: 19px 24px;
    font-weight: 600;
    font-size: 0.98rem;
    border: 0;
    box-shadow: none !important;
    gap: 12px;
  }

  .accordion-button::after {
    content: none;
  }

  .acc-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(23, 214, 179, 0.12);
    color: var(--mint);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex: 0 0 auto;
  }

  .accordion-button:hover .acc-icon {
    background: rgba(23, 214, 179, 0.2);
  }

  .faq-chevron {
    margin-left: auto;
    font-size: 1.1rem;
    color: var(--text-weak);
    transition: transform 0.3s ease;
  }

  .accordion-button:not(.collapsed) .faq-chevron {
    transform: rotate(180deg);
    color: var(--mint);
  }

  .accordion-button:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: -2px;
  }

  .accordion-body {
    background: var(--card);
    color: var(--text-sub);
    padding: 0 24px 22px 64px;
    font-size: 0.98rem;
    border-top: 1px solid transparent;
  }

  /* Download block */
  .download-cta {
    background: var(--bg-deep);
    padding: 92px 0 96px;
  }

  .download-grid {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 42px;
    display: grid;
    grid-template-columns: 0.75fr minmax(0, 1.4fr) 0.85fr;
    gap: 32px;
    align-items: center;
  }

  .download-title {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 10px;
  }

  .download-title span {
    color: var(--mint);
  }

  .download-intro {
    color: var(--text-sub);
    font-size: 0.95rem;
    margin-bottom: 0;
  }

  .download-btn-list {
    display: grid;
    gap: 12px;
  }

  .large-download-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--card);
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    min-height: 72px;
    padding: 12px 22px;
    color: var(--text-main);
    transition: var(--ease);
  }

  .large-download-btn:hover {
    border-color: var(--mint);
    color: var(--text-main);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
  }

  .large-download-btn:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 3px;
  }

  .large-download-btn:active {
    transform: translateY(0);
  }

  .large-download-btn .ld-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(23, 214, 179, 0.1);
    color: var(--mint);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex: 0 0 auto;
  }

  .large-download-btn .ld-text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
  }

  .ld-text small {
    color: var(--text-weak);
    font-size: 0.78rem;
  }

  .ld-text strong {
    font-size: 1rem;
    font-weight: 650;
  }

  .download-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-align: center;
  }

  .qr-panel-white {
    width: 168px;
    height: 168px;
    background: #fff;
    border-radius: 20px;
    padding: 10px;
    border: 2px solid var(--mint);
  }

  .qr-panel-white img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
  }

  .download-qr span {
    color: var(--text-weak);
    font-size: 0.84rem;
  }

  /* Footer */
  .site-footer {
    background: #080D12;
    border-top: 1px solid var(--line);
    color: var(--text-sub);
    padding-top: 60px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.7fr 0.8fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .footer-brand-desc {
    color: var(--text-weak);
    margin-top: 16px;
    max-width: 360px;
    font-size: 0.9rem;
  }

  .footer-title {
    color: #DCE4EC;
    font-size: 0.95rem;
    font-weight: 650;
    margin-bottom: 18px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 0.9rem;
  }

  .footer-links a {
    color: var(--text-weak);
    display: inline-block;
  }

  .footer-links a:hover {
    color: var(--mint);
    transform: translateX(3px);
  }

  .footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    color: var(--text-weak);
    font-size: 0.9rem;
  }

  .footer-contact-list span {
    display: flex;
    align-items: flex-start;
    gap: 9px;
  }

  .footer-contact-list i {
    color: var(--mint);
    font-size: 0.95rem;
  }

  .footer-sign {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.84rem;
    color: var(--text-weak);
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }

  /* Responsive */
  @media (max-width: 1199px) {
    .download-grid {
      grid-template-columns: 0.85fr 1.35fr 0.75fr;
      padding: 32px;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 991px) {
    .nav-menu {
      display: none;
    }

    .menu-toggle {
      display: inline-flex;
    }

    .page-hero {
      padding: 136px 0 68px;
    }

    .vo-block {
      grid-template-columns: 1fr;
      gap: 40px;
    }

    .vo-media-card {
      transform: none;
    }

    .procedure-grid {
      grid-template-columns: 1fr;
      gap: 4px;
    }

    .status-list {
      grid-template-columns: 1fr;
    }

    .download-grid {
      grid-template-columns: 1fr;
    }

    .download-qr {
      order: 3;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 26px;
    }

    .footer-brand-desc {
      max-width: 100%;
    }
  }

  @media (max-width: 575px) {
    .section-block,
    .safety-overview,
    .safety-procedure,
    .safety-status,
    .faq-section,
    .download-cta {
      padding-top: 56px;
      padding-bottom: 56px;
    }

    .section-title {
      font-size: 1.5rem;
    }

    .page-hero h1 {
      font-size: 2rem;
    }

    .page-hero-actions .btn {
      width: 100%;
    }

    .header-download-btn {
      width: auto;
      padding-left: 14px;
      padding-right: 14px;
    }

    .header-download-btn .btn-label-alone {
      display: none;
    }

    .page-eyebrow,
    .breadcrumb-nav {
      margin-bottom: 18px;
    }

    .hero-meta-note {
      gap: 10px;
      flex-direction: column;
      align-items: flex-start;
      font-size: 0.86rem;
    }

    .warning-plate {
      padding: 56px 0;
    }

    .warning-plate .plate-title {
      font-size: 1.35rem;
    }

    .procedure-item {
      grid-template-columns: 1fr;
      gap: 4px;
      padding-top: 20px;
    }

    .procedure-num {
      font-size: 2.4rem;
    }

    .status-card {
      flex-direction: column;
      gap: 12px;
      padding: 22px;
    }

    .accordion-body {
      padding-left: 22px;
      padding-bottom: 20px;
    }

    .download-grid {
      padding: 22px;
      border-radius: 20px;
    }

    .footer-sign {
      flex-direction: column;
    }
  }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #17D6B3;
            --primary-hover: #0FBC9C;
            --primary-soft: rgba(23, 214, 179, 0.12);
            --accent: #F1B94B;
            --danger: #FF5E7A;
            --bg-dark: #0B1015;
            --bg-panel: #131B23;
            --bg-card: #19232D;
            --bg-input: #101820;
            --border-color: rgba(255, 255, 255, 0.07);
            --text-primary: #EDF1F5;
            --text-secondary: #A9B4C0;
            --text-muted: #71808F;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 10px 30px -20px rgba(0, 0, 0, 0.65);
            --shadow-card-hover: 0 18px 40px -20px rgba(0, 0, 0, 0.75);
            --shadow-primary: 0 8px 24px -10px rgba(23, 214, 179, 0.45);
            --transition: 180ms ease-out;
            --font-stack: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", "Roboto", "Helvetica", "Arial", sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--primary-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .section-block {
            padding: 80px 0;
            position: relative;
        }

        .section-block+.section-block {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-md);
            padding: 0.65rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
        }

        .btn:focus-visible,
        .btn-outline-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: none;
        }

        .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #07130F;
            box-shadow: var(--shadow-primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #07130F;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px -10px rgba(23, 214, 179, 0.6);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px -8px rgba(23, 214, 179, 0.5);
        }

        .btn-outline-primary {
            background: transparent;
            border-color: rgba(23, 214, 179, 0.45);
            color: var(--primary);
        }

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background-color: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-outline-primary:active {
            transform: translateY(0);
        }

        .btn-icon-move i {
            transition: transform var(--transition);
        }

        .btn-icon-move:hover i {
            transform: translateX(4px);
        }

        .btn-lg-navy {
            height: 54px;
            padding: 0 1.6rem;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .btn-download-two-line {
            height: auto;
            padding: 0.45rem 1.4rem;
            text-align: left;
            display: inline-flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 0;
            border-radius: var(--radius-md);
        }

        .btn-download-two-line .btn-top-text {
            font-size: 0.72rem;
            opacity: 0.85;
            font-weight: 400;
        }

        .btn-download-two-line .btn-main-text {
            font-size: 0.95rem;
            font-weight: 700;
            line-height: 1.4;
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }

        .btn-download-two-line .btn-main-text i {
            font-size: 1.05rem;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge-soft {
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: 100px;
            padding: 0.3rem 0.85rem;
            font-size: 0.78rem;
            font-weight: 500;
            border: 1px solid rgba(23, 214, 179, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .badge-accent {
            background: rgba(241, 185, 75, 0.14);
            color: var(--accent);
            border-radius: 100px;
            padding: 0.3rem 0.85rem;
            font-size: 0.78rem;
            font-weight: 500;
            border: 1px solid rgba(241, 185, 75, 0.28);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(11, 16, 21, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1030;
            backdrop-filter: none;
        }

        .site-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            padding: 0;
        }

        .navbar-brand:hover {
            color: var(--text-primary);
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(23, 214, 179, 0.2), rgba(23, 214, 179, 0.05));
            border: 1px solid rgba(23, 214, 179, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 0 24px rgba(23, 214, 179, 0.12);
        }

        .brand-mark i {
            font-style: normal;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            line-height: 1;
            letter-spacing: 0;
        }

        .brand-text {
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0 auto;
            padding: 0 1rem;
        }

        .nav-link-main {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 100px;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-link-main:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link-main.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .header-download-btn {
            font-size: 0.88rem;
            font-weight: 600;
            padding: 0.5rem 1.2rem;
            border-radius: 100px;
            background: var(--primary);
            border-color: var(--primary);
            color: #07130F;
            box-shadow: var(--shadow-primary);
        }

        .header-download-btn:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-1px);
            color: #07130F;
        }

        .header-download-btn i {
            font-size: 0.95rem;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--bg-panel);
            color: var(--text-primary);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Mobile offcanvas */
        .mobile-nav-canvas {
            background-color: var(--bg-panel) !important;
            border-left: 1px solid rgba(255, 255, 255, 0.06);
            max-width: 330px;
        }

        .mobile-nav-canvas .offcanvas-header {
            padding: 1.2rem 1.4rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .mobile-nav-canvas .btn-close {
            filter: invert(0.6) brightness(12);
            background-size: 0.7em;
            opacity: 0.8;
        }

        .mobile-nav-canvas .btn-close:focus-visible {
            outline: 2px solid var(--primary);
            border-radius: 6px;
        }

        .mobile-nav-canvas .offcanvas-body {
            padding: 1rem 1.2rem 1.5rem;
            display: flex;
            flex-direction: column;
        }

        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 2rem;
        }

        .mobile-nav-links a {
            display: block;
            padding: 0.8rem 0.9rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            color: var(--text-secondary);
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
        }

        .mobile-nav-links a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-primary);
        }

        .mobile-nav-links a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-nav-footer {
            margin-top: auto;
            padding-top: 1rem;
            border-top: 1px solid var(--border-color);
        }

        /* ===== Hero Banner ===== */
        .page-hero {
            position: relative;
            padding: 90px 0 80px;
            background-color: var(--bg-dark);
            background-image: linear-gradient(rgba(11, 16, 21, 0.82), rgba(11, 16, 21, 0.94)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 20%;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
        }

        .page-hero::before {
            content: "9";
            position: absolute;
            right: 4%;
            top: 10%;
            font-size: 18rem;
            font-weight: 900;
            color: rgba(23, 214, 179, 0.04);
            line-height: 1;
            pointer-events: none;
            font-family: var(--font-stack);
            text-shadow: 0 0 80px rgba(23, 214, 179, 0.06);
        }

        .page-hero .container-wrap {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-nav {
            margin-bottom: 2rem;
        }

        .breadcrumb-nav ol {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .breadcrumb-nav li::after {
            content: "/";
            color: rgba(255, 255, 255, 0.25);
            font-size: 0.75rem;
        }

        .breadcrumb-nav li:last-child::after {
            content: "";
        }

        .breadcrumb-nav a {
            color: var(--text-secondary);
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .breadcrumb-nav span {
            color: var(--text-primary);
        }

        .eyebrow {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            color: var(--primary);
            background: var(--primary-soft);
            border: 1px solid rgba(23, 214, 179, 0.2);
            padding: 0.35rem 1rem;
            border-radius: 100px;
            margin-bottom: 1.2rem;
        }

        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
            color: var(--text-primary);
            max-width: 14em;
        }

        .hero-lead {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 1.8rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 60px 0 50px;
            }
            .page-hero h1 {
                font-size: 2rem;
                margin-bottom: 0.8rem;
            }
            .hero-lead {
                font-size: 0.98rem;
            }
            .page-hero::before {
                font-size: 10rem;
                top: 15%;
                right: -10%;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

        /* ===== 通用 Block 标题 ===== */
        .section-head {
            max-width: 700px;
            margin-bottom: 2.8rem;
        }

        .section-head .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            border: 1px solid rgba(23, 214, 179, 0.2);
            padding: 0.3rem 0.9rem;
            border-radius: 100px;
            margin-bottom: 0.9rem;
        }

        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 0.8rem;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section-head h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== 时间轴 ===== */
        .version-timeline {
            position: relative;
            padding-left: 2rem;
        }

        .version-timeline::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(23, 214, 179, 0.65), rgba(23, 214, 179, 0.12));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 2.2rem 2rem;
        }

        .timeline-item:last-child {
            padding-bottom: 0.6rem;
        }

        .timeline-dot {
            position: absolute;
            left: -2.1rem;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(23, 214, 179, 0.2);
            z-index: 1;
        }

        .timeline-item.dark .timeline-dot {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(241, 185, 75, 0.15);
        }

        .timeline-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.8rem;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .timeline-card:hover {
            transform: translateY(-4px);
            border-color: rgba(23, 214, 179, 0.35);
            box-shadow: var(--shadow-card-hover);
        }

        .timeline-card .version-head {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.7rem;
            margin-bottom: 0.8rem;
        }

        .timeline-card .version-num {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
        }

        .timeline-card .version-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            padding: 0.15rem 0.7rem;
            border-radius: 100px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .timeline-card .version-tag {
            font-size: 0.75rem;
            color: var(--accent);
            background: rgba(241, 185, 75, 0.12);
            padding: 0.15rem 0.7rem;
            border-radius: 100px;
            border: 1px solid rgba(241, 185, 75, 0.2);
        }

        .timeline-card .version-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
            margin-bottom: 0.7rem;
        }

        .timeline-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .timeline-card ul li {
            position: relative;
            padding-left: 1.3rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0.3rem;
            line-height: 1.6;
        }

        .timeline-card ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.62em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            opacity: 0.7;
        }

        .timeline-card ul li:last-child {
            margin-bottom: 0;
        }

        @media (min-width: 992px) {
            .version-timeline {
                padding-left: 3rem;
            }
            .timeline-item {
                padding-left: 2.4rem;
            }
            .timeline-dot {
                left: -2.35rem;
            }
        }

        @media (max-width: 576px) {
            .version-timeline {
                padding-left: 1.4rem;
            }
            .timeline-item {
                padding-left: 1.3rem;
                padding-bottom: 1.8rem;
            }
            .timeline-dot {
                left: -1.5rem;
            }
            .timeline-card {
                padding: 1.2rem 1.2rem;
            }
        }

        /* ===== 非对称 Feature Card ===== */
        .feature-asym-section {
            background: rgba(255, 255, 255, 0.02);
        }

        .feature-card-lg {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            margin-bottom: 1.5rem;
        }

        .feature-card-lg:hover {
            border-color: rgba(23, 214, 179, 0.3);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-card-lg .feature-media {
            overflow: hidden;
            position: relative;
            min-height: 240px;
            max-height: 340px;
            background: #0d141a;
        }

        .feature-card-lg .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 320ms ease-out;
        }

        .feature-card-lg:hover .feature-media img {
            transform: scale(1.025);
        }

        .feature-card-lg .feature-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 16, 21, 0.4), transparent);
            pointer-events: none;
        }

        .feature-card-lg .feature-content {
            padding: 1.8rem 2rem 2rem;
        }

        .feature-card-lg h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }

        .feature-card-lg p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
            margin-bottom: 0.6rem;
        }

        .feature-list-mini {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 0.8rem;
        }

        .feature-stack-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.6rem 1.8rem;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feature-stack-card:hover {
            transform: translateY(-4px);
            border-color: rgba(23, 214, 179, 0.3);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-stack-card .number {
            font-size: 2.4rem;
            font-weight: 800;
            color: rgba(23, 214, 179, 0.6);
            line-height: 1;
            margin-bottom: 0.8rem;
        }

        .feature-stack-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .feature-stack-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-stack-card .stat-badge {
            margin-top: auto;
            padding-top: 1rem;
        }

        /* ===== 更新渠道结构列表 ===== */
        .update-channel-row {
            background: var(--bg-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
        }

        .channel-left-col {
            padding: 2.5rem 2.5rem;
        }

        .channel-steps {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .channel-steps li {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .channel-steps li:last-child {
            border-bottom: none;
        }

        .step-index {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: var(--primary-soft);
            border: 1px solid rgba(23, 214, 179, 0.25);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .channel-steps li:hover .step-index {
            background: var(--primary);
            color: #0B1015;
            box-shadow: var(--shadow-primary);
        }

        .step-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.3rem;
        }

        .step-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .channel-media-col {
            background-color: var(--bg-dark);
            background-image: linear-gradient(rgba(11, 16, 21, 0.5), rgba(11, 16, 21, 0.85)), url('/assets/images/coverpic/cover-11.webp');
            background-size: cover;
            background-position: center;
            min-height: 300px;
            display: flex;
            align-items: flex-end;
            position: relative;
        }

        .channel-media-col .media-caption {
            padding: 2rem 2rem;
            width: 100%;
            background: linear-gradient(to top, rgba(11, 16, 21, 0.88), transparent);
        }

        .channel-media-col .media-caption h4 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.4rem;
        }

        .channel-media-col .media-caption p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-panel .accordion-item {
            background-color: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: none;
            transition: border-color var(--transition);
        }

        .faq-panel .accordion-item:last-child {
            margin-bottom: 0;
        }

        .faq-panel .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(23, 214, 179, 0.45);
            box-shadow: 0 0 0 1px rgba(23, 214, 179, 0.15);
        }

        .faq-panel .accordion-button {
            background-color: var(--bg-card);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.1rem 1.4rem;
            box-shadow: none;
            border: none;
            transition: var(--transition);
            border-radius: 16px !important;
        }

        .faq-panel .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%2317D6B3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
            background-size: contain;
            background-position: center;
            transition: transform var(--transition);
        }

        .faq-panel .accordion-button:not(.collapsed) {
            background-color: var(--bg-card);
            color: var(--primary);
            box-shadow: none;
        }

        .faq-panel .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%2317D6B3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M4 10l4-4 4 4'/%3E%3C/svg%3E");
            transform: rotate(0deg);
        }

        .faq-panel .accordion-button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            box-shadow: none;
            z-index: 1;
        }

        .faq-panel .accordion-body {
            background-color: var(--bg-card);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
            padding: 0 1.4rem 1.3rem;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 0 0 16px 16px;
        }

        /* ===== CTA 下载区 ===== */
        .cta-download-section {
            background: var(--bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-download-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -120px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(23, 214, 179, 0.08), transparent 70%);
            pointer-events: none;
        }

        .cta-download-wrap {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-download-wrap h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .cta-download-wrap p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 1.8rem;
        }

        .download-btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 1.6rem;
        }

        .download-qr-card {
            display: inline-flex;
            align-items: center;
            gap: 1.2rem;
            background: var(--bg-card);
            border: 1px solid rgba(23, 214, 179, 0.3);
            border-radius: var(--radius-lg);
            padding: 0.9rem 1.4rem;
            box-shadow: var(--shadow-primary);
        }

        .download-qr-card .qr-block {
            background: #fff;
            border-radius: var(--radius-sm);
            padding: 0.45rem;
            flex-shrink: 0;
        }

        .download-qr-card .qr-block img {
            width: 72px;
            height: 72px;
            object-fit: contain;
        }

        .download-qr-card .qr-text {
            text-align: left;
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.55;
        }

        .download-qr-card .qr-text strong {
            font-size: 0.95rem;
            color: var(--text-primary);
            display: block;
            margin-bottom: 0.2rem;
        }

        @media (max-width: 576px) {
            .download-btn-group {
                flex-direction: column;
                align-items: stretch;
            }

            .download-btn-group .btn {
                width: 100%;
            }

            .download-qr-card {
                max-width: 100%;
                flex-direction: column;
                text-align: center;
                width: 100%;
            }

            .download-qr-card .qr-text {
                text-align: center;
            }

            .cta-download-wrap h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-panel);
            padding-top: 60px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.4rem;
            padding-bottom: 48px;
        }

        .footer-brand-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
            margin-top: 0.8rem;
            max-width: 280px;
        }

        .footer-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(3px);
        }

        .footer-contact-list {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }

        .footer-contact-list span {
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            line-height: 1.5;
        }

        .footer-contact-list i {
            color: var(--primary);
            font-size: 1rem;
        }

        .footer-sign {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 0.8rem;
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .footer-sign small {
            color: var(--text-muted);
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-sign {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 991px) {
            .nav-menu {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }
        }

        /* ===== Secondary Section Background ===== */
        .alt-bg {
            background: rgba(255, 255, 255, 0.015);
        }

        .alt-bg-2 {
            background: var(--bg-panel);
        }

        /* ===== Scroll Reveal ===== */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 600ms ease-out, transform 600ms ease-out;
        }

        .reveal.in-view {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Reduced Motion ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }

            .reveal {
                opacity: 1;
                transform: none;
            }
        }

        /* Small fixes */
        .bi {
            line-height: 1;
        }

        a:focus-visible,
        .btn:focus-visible,
        .form-control:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: none;
        }

        /* ===== Stats strip ===== */
        .stat-highlight-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            margin-top: 2rem;
        }

        .stat-highlight-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.4rem 1.2rem;
            text-align: center;
            transition: var(--transition);
        }

        .stat-highlight-card:hover {
            border-color: rgba(23, 214, 179, 0.3);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .stat-highlight-card .stat-num {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.2rem;
        }

        .stat-highlight-card .stat-label {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .stat-highlight-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 420px) {
            .stat-highlight-row {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category4 */
:root {
      --accent: #17D6B3;
      --accent-dark: #0FBC9C;
      --amber: #F1B94B;
      --danger: #FF5E7A;
      --bg: #0B1015;
      --panel: #131B23;
      --card: #19232D;
      --line: rgba(255, 255, 255, 0.07);
      --line-strong: rgba(255, 255, 255, 0.14);
      --text: #EDF1F5;
      --muted: #A9B4C0;
      --dim: #71808F;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-sm: 8px;
      --shadow-card: 0 10px 30px -20px rgba(0, 0, 0, 0.65);
      --shadow-hover: 0 18px 40px -20px rgba(0, 0, 0, 0.75);
      --font: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
      --smooth: 180ms ease-out;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      min-height: 100vh;
    }

    body.paged-body {
      padding-top: 72px;
    }

    a {
      color: var(--accent);
      text-decoration: none;
      transition: color var(--smooth);
    }

    a:hover {
      color: var(--accent);
    }

    img {
      max-width: 100%;
      display: block;
      border: 0;
    }

    .container-wrap {
      width: min(1200px, 92%);
      margin-left: auto;
      margin-right: auto;
    }

    .text-accent {
      color: var(--accent);
    }

    .text-amber {
      color: var(--amber);
    }

    .text-muted {
      color: var(--muted);
    }

    .text-dim {
      color: var(--dim);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.6rem;
      border-radius: var(--radius-md);
      padding: 0.72rem 1.32rem;
      font-size: 0.95rem;
      font-weight: 600;
      border: 1px solid transparent;
      transition: transform 180ms ease-out, box-shadow 180ms ease-out, background 180ms ease-out, color 180ms ease-out, border-color 180ms ease-out;
      cursor: pointer;
      text-decoration: none;
      line-height: 1.4;
    }

    .btn:focus-visible {
      outline: 3px solid rgba(23, 214, 179, 0.28);
      outline-offset: 2px;
    }

    .btn:active {
      transform: translateY(0) scale(0.98);
    }

    .btn-accent {
      background: var(--accent);
      border-color: rgba(23, 214, 179, 0.3);
      color: #071B17;
      box-shadow: 0 8px 24px -10px rgba(23, 214, 179, 0.5);
    }

    .btn-accent:hover,
    .btn-accent:focus-visible {
      background: var(--accent-dark);
      color: #071B17;
      border-color: rgba(23, 214, 179, 0.52);
      transform: translateY(-2px);
    }

    .btn-ghost {
      border: 1px solid var(--line-strong);
      background: rgba(255, 255, 255, 0.02);
      color: var(--text);
    }

    .btn-ghost:hover,
    .btn-ghost:focus-visible {
      border-color: rgba(23, 214, 179, 0.55);
      color: var(--accent);
      transform: translateY(-2px);
      background: rgba(23, 214, 179, 0.04);
    }

    .btn-lg {
      min-height: 54px;
      padding-left: 1.8rem;
      padding-right: 1.8rem;
      font-size: 1rem;
    }

    .icon-arrow {
      transition: transform 180ms ease-out;
    }

    .btn:hover .icon-arrow {
      transform: translateX(4px);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 0.55rem;
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      background: rgba(23, 214, 179, 0.08);
      border: 1px solid rgba(23, 214, 179, 0.16);
      padding: 0.35rem 0.8rem;
      border-radius: 999px;
      margin-bottom: 1rem;
    }

    .eyebrow::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--accent);
      display: inline-block;
      flex: 0 0 auto;
    }

    .badge-soft {
      display: inline-block;
      border-radius: 999px;
      padding: 0.22rem 0.65rem;
      font-size: 0.75rem;
      font-weight: 600;
      line-height: 1.4;
    }

    .badge-mint {
      background: rgba(23, 214, 179, 0.12);
      color: var(--accent);
    }

    .badge-amber {
      background: rgba(241, 185, 75, 0.12);
      color: var(--amber);
    }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 72px;
      z-index: 1060;
      background: rgba(11, 16, 21, 0.96);
      border-bottom: 1px solid var(--line);
    }

    .site-header .container-wrap {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.2rem;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 0.65rem;
      flex: 0 0 auto;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--accent);
      color: #071B17;
      border-radius: 12px;
      font-weight: 800;
      font-size: 1.35rem;
      line-height: 1;
      transform: rotate(-3deg);
      box-shadow: 0 8px 20px -8px rgba(23, 214, 179, 0.45);
    }

    .brand-mark i {
      font-style: normal;
      transform: rotate(3deg);
      display: inline-block;
    }

    .brand-text {
      font-size: 1.16rem;
      font-weight: 700;
      color: var(--text);
      white-space: nowrap;
      letter-spacing: 0.02em;
    }

    .desktop-menu {
      display: flex;
      align-items: center;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 0.08rem;
    }

    .nav-link-main {
      display: inline-block;
      padding: 0.5rem 0.88rem;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--muted);
      background: transparent;
      border: 1px solid transparent;
      transition: color 180ms ease-out, background 180ms ease-out, border-color 180ms ease-out;
    }

    .nav-link-main:hover {
      color: var(--text);
      background: rgba(255, 255, 255, 0.04);
      border-color: var(--line);
    }

    .nav-link-main:focus-visible {
      outline: 3px solid rgba(23, 214, 179, 0.25);
      outline-offset: 1px;
    }

    .nav-link-main.active {
      color: var(--accent);
      background: rgba(23, 214, 179, 0.1);
      border-color: rgba(23, 214, 179, 0.18);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      flex: 0 0 auto;
    }

    .header-download-btn {
      min-height: 42px;
      padding: 0.45rem 1.05rem;
      border-radius: 999px;
    }

    .mobile-toggler {
      width: 42px;
      height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--panel);
      border: 1px solid var(--line-strong);
      border-radius: 12px;
      color: var(--text);
      font-size: 1.2rem;
    }

    .mobile-toggler:hover,
    .mobile-toggler:focus-visible {
      color: var(--accent);
      border-color: rgba(23, 214, 179, 0.45);
      outline: none;
    }

    .offcanvas {
      background: var(--bg);
    }

    .offcanvas.offcanvas-end {
      border-left: 1px solid var(--line);
    }

    .offcanvas .offcanvas-brand {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }

    .offcanvas .offcanvas-brand .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 11px;
      font-size: 1.2rem;
    }

    .offcanvas-header {
      border-bottom: 1px solid var(--line);
      padding: 1rem 1.2rem;
    }

    .offcanvas-body {
      padding: 1.2rem;
    }

    .nav-menu-mobile {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
    }

    .nav-menu-mobile .nav-link-main {
      display: block;
      width: 100%;
      padding: 0.85rem 1rem;
      border-radius: 12px;
      font-size: 0.98rem;
    }

    .offcanvas-footer-cta {
      margin-top: 1.8rem;
    }

    .page-hero {
      position: relative;
      background: var(--bg) no-repeat center / cover;
      padding: 104px 0 72px;
      border-bottom: 1px solid var(--line);
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11, 16, 21, 0.96) 0%, rgba(11, 16, 21, 0.82) 44%, rgba(11, 16, 21, 0.62) 100%);
    }

    .page-hero::after {
      content: "9";
      position: absolute;
      right: -4rem;
      top: 2rem;
      font-size: 22rem;
      font-weight: 800;
      line-height: 1;
      color: var(--accent);
      opacity: 0.03;
      pointer-events: none;
      user-select: none;
    }

    .page-hero .container-wrap {
      position: relative;
      z-index: 1;
    }

    .breadcrumb-wrap {
      margin-bottom: 1rem;
    }

    .breadcrumb-items {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.4rem;
      font-size: 0.82rem;
      color: var(--dim);
      list-style: none;
      padding-left: 0;
      margin-bottom: 0;
    }

    .breadcrumb-items li {
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .breadcrumb-items li + li::before {
      content: "/";
      color: var(--dim);
      font-size: 0.8rem;
    }

    .breadcrumb-items a {
      color: var(--muted);
    }

    .breadcrumb-items a:hover {
      color: var(--accent);
    }

    .hero-inner {
      display: grid;
      grid-template-columns: minmax(0, 8fr) minmax(0, 5fr);
      gap: 2.5rem;
      align-items: center;
    }

    .hero-copy {
      max-width: 700px;
    }

    .hero-copy h1 {
      font-size: clamp(2rem, 4.4vw, 3.4rem);
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.02em;
      margin: 0.5rem 0 1.25rem;
      color: var(--text);
    }

    .hero-copy h1 .text-accent {
      color: var(--accent);
    }

    .hero-lead {
      font-size: 1.02rem;
      line-height: 1.85;
      color: var(--muted);
      margin-bottom: 1.9rem;
      max-width: 600px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem;
      margin-bottom: 2.2rem;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.9rem;
    }

    .hero-guard {
      margin-top: 2.1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.82rem;
      color: var(--dim);
    }

    .hero-guard i {
      color: var(--accent);
    }

    .page-section {
      padding: 84px 0;
    }

    .page-section.panel-bg {
      background: var(--panel);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .section-heading {
      margin-bottom: 2.6rem;
      max-width: 720px;
    }

    .section-heading h2 {
      font-size: clamp(1.65rem, 2.8vw, 2.2rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      margin: 0.2rem 0 0.8rem;
      color: var(--text);
    }

    .section-heading p {
      color: var(--muted);
      font-size: 0.98rem;
      margin-bottom: 0;
    }

    .content-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.8rem;
      align-items: center;
    }

    .content-grid-text h2 {
      font-size: clamp(1.5rem, 2.4vw, 2rem);
      font-weight: 700;
      margin-bottom: 1.1rem;
      line-height: 1.3;
    }

    .content-grid-text p {
      color: var(--muted);
      margin-bottom: 1.2rem;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 1.4rem 0 0;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }

    .check-list li {
      display: flex;
      gap: 0.7rem;
      align-items: flex-start;
      color: var(--text);
      padding-left: 0;
    }

    .check-list .bi {
      color: var(--accent);
      font-size: 1.1rem;
      line-height: 1.6;
    }

    .content-grid-media {
      position: relative;
    }

    .image-frame {
      border-radius: 22px;
      overflow: hidden;
      border: 1px solid var(--line-strong);
      box-shadow: var(--shadow-card);
      background: var(--panel);
    }

    .image-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 280px;
    }

    .media-note {
      margin-top: 1rem;
      padding: 0.9rem 1.1rem;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 14px;
      color: var(--muted);
      display: flex;
      gap: 0.7rem;
      font-size: 0.88rem;
    }

    .media-note i {
      color: var(--amber);
    }

    .activity-panel {
      position: relative;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 2rem;
      height: 100%;
      overflow: hidden;
      transition: transform 180ms ease-out, border-color 180ms ease-out, box-shadow 180ms ease-out;
    }

    .activity-panel:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(23, 214, 179, 0.28);
    }

    .activity-panel::after {
      content: "";
      position: absolute;
      right: -2rem;
      top: -2rem;
      width: 110px;
      height: 110px;
      background: rgba(23, 214, 179, 0.05);
      border-radius: 50%;
      border: 1px solid rgba(23, 214, 179, 0.12);
    }

    .activity-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(23, 214, 179, 0.1);
      color: var(--accent);
      font-size: 1.5rem;
      margin-bottom: 1.3rem;
    }

    .activity-icon.amber-icon {
      background: rgba(241, 185, 75, 0.12);
      color: var(--amber);
    }

    .activity-panel h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .activity-panel .activity-desc {
      color: var(--muted);
      font-size: 0.95rem;
      margin-bottom: 1rem;
    }

    .activity-list {
      list-style: none;
      padding-left: 0;
      margin: 1rem 0 1.3rem;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }

    .activity-list li {
      display: flex;
      gap: 0.5rem;
      font-size: 0.92rem;
      color: var(--text);
      align-items: flex-start;
    }

    .activity-list li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 2px;
      background: var(--accent);
      transform: rotate(45deg);
      display: inline-block;
      margin-top: 0.55rem;
      flex: 0 0 auto;
    }

    .activity-list li.amber-li::before {
      background: var(--amber);
    }

    .activity-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.6rem;
    }

    .image-card-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--line-strong);
      height: 100%;
      min-height: 240px;
      position: relative;
    }

    .image-card-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      inset: 0;
    }

    .image-card-frame-next {
      margin-top: 1.8rem;
      margin-left: auto;
      max-width: 620px;
    }

    .flow-zone {
      position: relative;
      background: var(--panel);
      padding: 84px 0;
    }

    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.2rem;
      margin-top: 2rem;
    }

    .flow-step {
      border-radius: var(--radius-lg);
      background: var(--card);
      border: 1px solid var(--line);
      padding: 1.8rem 1.5rem;
      position: relative;
      transition: transform 180ms ease-out, border-color 180ms ease-out;
    }

    .flow-step:hover {
      transform: translateY(-4px);
      border-color: rgba(23, 214, 179, 0.28);
    }

    .flow-step .step-num {
      font-size: 2.1rem;
      font-weight: 800;
      line-height: 1;
      color: var(--accent);
      opacity: 0.32;
      display: block;
      margin-bottom: 1rem;
    }

    .flow-step h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.6rem;
    }

    .flow-step p {
      font-size: 0.86rem;
      color: var(--muted);
      margin: 0;
      line-height: 1.7;
    }

    .notice-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 1.2rem;
      align-items: center;
      background: rgba(241, 185, 75, 0.07);
      border: 1px solid rgba(241, 185, 75, 0.2);
      border-radius: var(--radius-lg);
      padding: 1.5rem 1.8rem;
    }

    .notice-strip-icon {
      width: 46px;
      height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(241, 185, 75, 0.14);
      color: var(--amber);
      font-size: 1.3rem;
      border-radius: 14px;
      flex: 0 0 auto;
    }

    .notice-strip-copy {
      flex: 1 1 360px;
    }

    .notice-strip-copy strong {
      font-size: 1rem;
      display: block;
      margin-bottom: 0.2rem;
    }

    .notice-strip-copy p {
      margin: 0;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .notice-strip-note {
      color: var(--amber);
      font-weight: 600;
      font-size: 0.85rem;
    }

    .faq-zone .section-heading {
      margin-bottom: 2rem;
    }

    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 0.8rem;
    }

    .faq-accordion .accordion-item {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 16px !important;
      overflow: hidden;
      transition: border-color 180ms ease-out;
    }

    .faq-accordion .accordion-item:hover {
      border-color: rgba(23, 214, 179, 0.22);
    }

    .faq-accordion .accordion-button {
      background: transparent;
      color: var(--text);
      font-weight: 600;
      font-size: 0.98rem;
      padding: 1.1rem 1.35rem;
      box-shadow: none;
      border-radius: 0;
      border: 0;
    }

    .faq-accordion .accordion-button:not(.collapsed) {
      background: rgba(23, 214, 179, 0.04);
      color: var(--accent);
    }

    .faq-accordion .accordion-button:focus-visible {
      outline: 3px solid rgba(23, 214, 179, 0.22);
      outline-offset: -2px;
    }

    .faq-accordion .accordion-button::after {
      width: 1.2rem;
      height: 1.2rem;
      background-repeat: no-repeat;
      background-size: contain;
      background-position: center;
      transform: rotate(0deg);
      filter: brightness(0) invert(1) sepia(1) saturate(4) hue-rotate(120deg);
      transition: transform 200ms ease-out;
    }

    .faq-accordion .accordion-button:not(.collapsed)::after {
      transform: rotate(90deg);
    }

    .faq-accordion .accordion-body {
      padding: 0 1.35rem 1.2rem;
      color: var(--muted);
      font-size: 0.93rem;
      border-top: 1px solid var(--line);
    }

    .cta-zone {
      background: var(--panel);
      border-top: 1px solid var(--line);
      padding: 60px 0;
    }

    .cta-panel {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 22px;
      padding: 2.2rem;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 2rem;
      align-items: center;
      position: relative;
      overflow: hidden;
    }

    .cta-panel::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 3px;
      background: var(--accent);
    }

    .cta-copy h2 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 0.4rem;
    }

    .cta-copy p {
      color: var(--muted);
      margin-bottom: 1.4rem;
      max-width: 620px;
    }

    .cta-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 0.9rem;
    }

    .qr-card {
      width: 142px;
      background: #fff;
      padding: 0.7rem;
      border-radius: 16px;
      box-shadow: 0 0 0 1px rgba(23, 214, 179, 0.5);
    }

    .qr-card-svg {
      width: 100%;
      display: block;
    }

    .qr-caption {
      text-align: center;
      font-size: 0.7rem;
      color: #555;
      margin-top: 0.4rem;
    }

    .site-footer {
      background: #080D12;
      border-top: 1px solid var(--line);
      padding: 48px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 0.8fr 0.9fr 1.1fr;
      gap: 2rem;
      padding-bottom: 2rem;
    }

    .footer-grid .navbar-brand {
      margin-bottom: 1rem;
    }

    .footer-brand-desc {
      color: var(--dim);
      font-size: 0.86rem;
      line-height: 1.8;
      margin: 0;
      max-width: 380px;
    }

    .footer-title {
      font-size: 0.96rem;
      font-weight: 600;
      color: var(--text);
      margin: 1.4rem 0 1rem;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 0.55rem;
    }

    .footer-links a {
      color: var(--dim);
      font-size: 0.89rem;
      transition: color 160ms ease-out, padding-left 160ms ease-out;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      color: var(--accent);
      padding-left: 3px;
      outline: none;
    }

    .footer-contact-list {
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
      color: var(--dim);
      font-size: 0.87rem;
    }

    .footer-contact-list span {
      display: flex;
      align-items: flex-start;
      gap: 0.6rem;
      word-break: break-all;
    }

    .footer-contact-list i {
      color: var(--accent);
      font-size: 0.8rem;
      margin-top: 0.25rem;
    }

    .footer-sign {
      border-top: 1px solid var(--line);
      padding: 1.2rem 0;
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem 1.6rem;
      justify-content: space-between;
      color: var(--dim);
      font-size: 0.78rem;
    }

    .footer-sign small {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    .footer-sign small i {
      color: var(--accent);
      font-size: 0.75rem;
    }

    .footer-sign a {
      color: var(--dim);
    }

    .footer-sign a:hover {
      color: var(--accent);
    }

    .reveal {
      opacity: 0;
      transform: translateY(12px);
      transition: opacity 500ms ease-out, transform 500ms ease-out;
    }

    .reveal.is-inview {
      opacity: 1;
      transform: translateY(0);
    }

    @media (max-width: 1199.98px) {
      .nav-link-main {
        padding-left: 0.7rem;
        padding-right: 0.7rem;
        font-size: 0.86rem;
      }
    }

    @media (max-width: 1023.98px) {
      .content-grid {
        gap: 2rem;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
      }
    }

    @media (max-width: 991.98px) {
      .desktop-menu {
        display: none;
      }

      .hero-inner {
        grid-template-columns: 1fr;
      }

      .content-grid {
        grid-template-columns: 1fr;
      }

      .content-grid-media {
        order: 2;
      }

      .flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .cta-panel {
        grid-template-columns: 1fr;
      }

      .qr-card {
        width: 120px;
      }
    }

    @media (max-width: 767.98px) {
      .page-hero {
        padding: 84px 0 52px;
      }

      .page-section {
        padding: 60px 0;
      }

      .flow-zone {
        padding: 60px 0;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
      }

      .footer-title {
        margin-top: 1.2rem;
      }

      .footer-sign {
        flex-direction: column;
        justify-content: flex-start;
      }

      .activity-panel {
        padding: 1.5rem;
      }

      .hero-actions {
        align-items: stretch;
      }

      .hero-actions .btn {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .brand-text {
        font-size: 1rem;
      }

      .header-download-btn {
        display: none;
      }

      .flow-grid {
        grid-template-columns: 1fr;
      }

      .notice-strip {
        padding: 1.2rem;
      }

      .activity-meta {
        flex-direction: column;
        align-items: flex-start;
      }

      .cta-panel {
        padding: 1.6rem;
      }

      .cta-copy h2 {
        font-size: 1.25rem;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
      }

      .btn:hover,
      .activity-panel:hover,
      .flow-step:hover {
        transform: none;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }