/* roulang page: index */
:root {
  --primary: #1E5EFF;
  --primary-hover: #1A52DB;
  --secondary: #06B6D4;
  --accent: #F97316;
  --bg-page: #F5F8FC;
  --bg-card: #FFFFFF;
  --bg-alt: #F8FAFD;
  --text-title: #0B1220;
  --text-body: #334155;
  --text-muted: #64748B;
  --border-color: #E8EEF5;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-tag: 4px;
  --shadow-card: 0 1px 2px rgba(15,23,42,0.04), 0 8px 20px rgba(15,23,42,0.06);
  --shadow-hover: 0 4px 16px rgba(30,94,255,0.12);
  --transition-base: all .25s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-page);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input {
  font-family: inherit;
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}
h1,
h2,
h3,
h4 {
  color: var(--text-title);
  line-height: 1.3;
}
.h2-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.h3-title {
  font-size: 20px;
  font-weight: 700;
}
.section {
  padding: 80px 0;
}
.section-alt {
  background: var(--bg-alt);
}
.muted {
  color: var(--text-muted);
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition-base);
  box-shadow: 0 2px 8px rgba(30, 94, 255, 0.2);
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 20px rgba(30, 94, 255, 0.28);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(30, 94, 255, 0.2);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--primary);
  border-radius: 12px;
  transition: var(--transition-base);
  white-space: nowrap;
}
.btn-secondary:hover {
  background: #EEF4FF;
}
.btn-secondary:active {
  transform: scale(0.98);
}
.btn-secondary:focus-visible {
  outline: 3px solid rgba(30, 94, 255, 0.2);
  outline-offset: 2px;
}

/* ===== 左侧导航 App Shell ===== */
.app-shell {
  display: flex;
  min-height: 100vh;
}
.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  padding: 0 16px;
}
.sidebar-logo {
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  border-bottom: 1px solid #F1F5F9;
  margin-bottom: 8px;
}
.sidebar-logo a {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.01em;
}
.sidebar-logo a span {
  color: var(--text-title);
}
.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 8px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  transition: var(--transition-base);
}
.sidebar-nav a:hover {
  background: #F1F5F9;
  color: var(--text-title);
}
.sidebar-nav a.active {
  background: #EEF4FF;
  color: var(--primary);
  font-weight: 600;
}
.sidebar-nav a .nav-icon {
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.sidebar-bottom {
  padding: 16px 8px 20px;
  border-top: 1px solid #F1F5F9;
}
.sidebar-version {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-left: 4px;
}
.sidebar-bottom .btn-primary {
  width: 100%;
  padding: 0 16px;
  font-size: 14px;
  height: 40px;
}
.main-content {
  flex: 1;
  margin-left: 240px;
  min-width: 0;
}

/* ===== 移动端顶栏 ===== */
.mobile-topbar {
  display: none;
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 60;
}
.mobile-logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
}
.mobile-burger {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-title);
  font-size: 20px;
}
.mobile-burger:hover {
  background: #F1F5F9;
}
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, 0.5);
  z-index: 70;
  transition: opacity .3s;
}
.drawer-overlay.open {
  display: block;
}
.drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  background: #fff;
  z-index: 80;
  transform: translateX(-100%);
  transition: transform .3s ease;
  display: flex;
  flex-direction: column;
  padding: 0 16px;
}
.drawer.open {
  transform: translateX(0);
}
.drawer-header {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #F1F5F9;
}
.drawer-close {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 18px;
  color: var(--text-muted);
}
.drawer-close:hover {
  background: #F1F5F9;
}
.drawer-nav {
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}
.drawer-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-body);
}
.drawer-nav a:hover {
  background: #F1F5F9;
}
.drawer-nav a.active {
  background: #EEF4FF;
  color: var(--primary);
  font-weight: 600;
}
.drawer-bottom {
  padding: 16px 8px 24px;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(180deg, #F8FBFF 0%, #FFFFFF 100%);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 58% 42%;
  gap: 32px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #EEF4FF;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-title);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 460px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-media {
  position: relative;
}
.hero-media-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  border: 1px solid rgba(232, 238, 245, 0.8);
  transform: rotate(1deg);
  transition: transform .3s ease;
}
.hero-media-card:hover {
  transform: rotate(0deg) scale(1.01);
  box-shadow: var(--shadow-hover);
}
.hero-media-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.hero-official-badge {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
  letter-spacing: 0.02em;
  z-index: 2;
}

/* ===== 信任值条 ===== */
.trust-strip {
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
}
.trust-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px 48px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
}
.trust-item .t-icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: #EEF4FF;
  color: var(--primary);
  font-size: 12px;
}

/* ===== 功能轮播 ===== */
.carousel-wrap {
  position: relative;
  margin: 40px -8px 0;
}
.carousel-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px;
  scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar {
  display: none;
}
.carousel-card {
  min-width: 280px;
  max-width: 320px;
  flex-shrink: 0;
  scroll-snap-align: start;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition-base);
  box-shadow: var(--shadow-card);
}
.carousel-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.carousel-card .shot {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #EFF4FB 0%, #E3ECF9 100%);
  position: relative;
  overflow: hidden;
}
.carousel-card .shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.carousel-card .shot .shot-num {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.carousel-card body {
  padding: 16px 16px 18px;
}
.carousel-card .func-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 4px;
}
.carousel-card .func-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-title);
  font-size: 16px;
  z-index: 2;
  transition: var(--transition-base);
  border: 1px solid var(--border-color);
}
.carousel-arrow:hover {
  background: #EEF4FF;
  color: var(--primary);
}
.carousel-arrow.prev {
  left: -16px;
}
.carousel-arrow.next {
  right: -16px;
}
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}
.carousel-dots button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #D7DFEA;
  transition: var(--transition-base);
}
.carousel-dots button.active {
  background: var(--primary);
  width: 24px;
  border-radius: 4px;
}

/* ===== 系统要求 ===== */
.sysreq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 40px;
}
.sysreq-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}
.sysreq-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.sysreq-card .platform-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: #EFF6FF;
  color: var(--primary);
  margin-bottom: 16px;
}
.sysreq-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}
.sysreq-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sysreq-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid #F1F5F9;
  font-size: 14px;
}
.sysreq-list li:last-child {
  border-bottom: none;
}
.sysreq-list li .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--secondary);
  margin-top: 8px;
  flex-shrink: 0;
}
.sysreq-list li strong {
  color: var(--text-title);
  font-weight: 600;
  margin-right: 4px;
}
.sysreq-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
}
.sysreq-link:hover {
  text-decoration: underline;
}

/* ===== 评价墙 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.review-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}
.review-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #EEF4FF;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.review-user {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-title);
}
.review-stars {
  color: #FBBF24;
  font-size: 13px;
  letter-spacing: 1px;
  margin-top: 2px;
}
.review-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-body);
  margin-bottom: 16px;
}
.review-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background: #EEF4FF;
  padding: 4px 12px;
  border-radius: 4px;
}

/* ===== 资讯列表 ===== */
.news-section {
  background: #fff;
}
.news-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.news-link-more {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-link-more:hover {
  text-decoration: underline;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  border-left: 2px solid var(--primary);
  transform: translateX(2px);
}
.news-thumb {
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: #EFF4FB;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-content {
  flex: 1;
  min-width: 0;
}
.news-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: #EEF4FF;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 6px;
}
.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.4;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-summary {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-time {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.news-empty-state .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.5;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-alt);
}
.faq-list {
  border-top: 1px solid var(--border-color);
  margin-top: 32px;
}
.faq-item {
  border-bottom: 1px solid var(--border-color);
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  transition: var(--transition-base);
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .chevron {
  transition: transform .3s ease;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 400;
}
.faq-item[open] summary .chevron {
  transform: rotate(180deg);
}
.faq-item .faq-answer {
  padding: 0 8px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ===== CTA 横条 ===== */
.cta-banner {
  background: var(--primary);
  border-radius: 16px;
  padding: 48px;
  position: relative;
  overflow: hidden;
}
.cta-banner::after {
  content: '';
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  top: -80px;
  right: -40px;
}
.cta-banner h2 {
  color: #fff;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  margin-bottom: 24px;
  max-width: 480px;
}
.cta-banner .btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 32px;
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition-base);
}
.cta-banner .btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ===== 页脚 ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
}
.footer-brand .f-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 260px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition-base);
}
.footer-col ul a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid #F1F5F9;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 20px 0;
  margin-bottom: 0;
}
.breadcrumb a {
  color: var(--primary);
}
.breadcrumb a:hover {
  text-decoration: underline;
}
.breadcrumb .sep {
  color: #CBD5E1;
}
.breadcrumb .current {
  color: var(--text-muted);
}

/* ===== 文章页 ===== */
.article-cover {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 24px;
  aspect-ratio: 16/7;
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.article-body {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
}
.article-body h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}
.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 24px 0 12px;
}
.article-body p {
  margin-bottom: 16px;
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: #F8FAFD;
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-body);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
.article-body table th,
.article-body table td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}
.article-body table th {
  background: #F8FAFD;
  font-weight: 600;
}
.article-body ul,
.article-body ol {
  margin: 16px 0;
  padding-left: 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.related-posts {
  margin-top: 40px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.related-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition-base);
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.related-card img {
  aspect-ratio: 16/9;
  object-fit: cover;
  width: 100%;
}
.related-card .related-title {
  padding: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-title);
  line-height: 1.4;
}
.back-links {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  font-size: 14px;
}
.back-links a {
  color: var(--primary);
}
.back-links a:hover {
  text-decoration: underline;
}

/* ===== 分类页 ===== */
.cat-hero {
  padding: 64px 0 48px;
  background: linear-gradient(180deg, #F8FBFF 0%, #fff 100%);
  position: relative;
  overflow: hidden;
}
.cat-hero-grid {
  display: flex;
  align-items: center;
  gap: 48px;
}
.cat-hero-content {
  flex: 1;
}
.cat-hero h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 12px;
}
.cat-hero .cat-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 480px;
}
.cat-hero-media {
  width: 360px;
  flex-shrink: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.cat-hero-media img {
  aspect-ratio: 16/9;
  object-fit: cover;
  width: 100%;
}
.cat-card-row {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.cat-card {
  display: flex;
  align-items: stretch;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}
.cat-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.cat-card-img {
  width: 200px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.cat-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16/11;
}
.cat-card-body {
  flex: 1;
}
.cat-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-title);
}
.cat-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}
.steps-section {
  padding: 40px 0 40px;
}
.steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  counter-reset: step;
}
.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(30, 94, 255, 0.25);
}
.step-content h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}
.notice-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.notice-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.notice-card ul {
  list-style: none;
  padding: 0;
}
.notice-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
  padding: 10px 0;
  border-bottom: 1px solid #F1F5F9;
}
.notice-card ul li:last-child {
  border-bottom: none;
}
.notice-card ul li::before {
  content: '•';
  color: var(--secondary);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .sidebar {
    width: 72px;
    padding: 0 8px;
  }
  .sidebar-logo {
    justify-content: center;
    padding: 0;
  }
  .sidebar-logo a {
    font-size: 16px;
  }
  .sidebar-logo a .logo-text-full {
    display: none;
  }
  .sidebar-nav a {
    justify-content: center;
    padding: 14px 0;
  }
  .sidebar-nav a .nav-label {
    display: none;
  }
  .sidebar-nav a .nav-icon {
    font-size: 20px;
  }
  .sidebar-bottom {
    padding: 12px 4px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  .sidebar-version {
    display: none;
  }
  .sidebar-bottom .btn-primary {
    width: 44px;
    padding: 0;
    font-size: 0;
    border-radius: 10px;
    min-width: 0;
  }
  .sidebar-bottom .btn-primary::after {
    content: '↓';
    font-size: 18px;
  }
  .main-content {
    margin-left: 72px;
  }
}
@media (max-width: 767px) {
  .mobile-topbar {
    display: flex;
  }
  .sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section {
    padding: 48px 0;
  }
  .h2-title {
    font-size: 22px;
  }
  .hero {
    padding: 40px 0 48px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero h1 {
    font-size: 26px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
  }
  .hero-media-card {
    max-width: 100%;
  }
  .trust-strip-inner {
    gap: 16px 24px;
  }
  .sysreq-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .review-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .news-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .news-thumb {
    width: 100%;
    height: 140px;
  }
  .news-time {
    align-self: flex-end;
  }
  .cta-banner {
    padding: 32px 24px;
  }
  .cta-banner h2 {
    font-size: 22px;
  }
  .cta-banner .btn-white {
    width: 100%;
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .cat-hero-grid {
    flex-direction: column;
    gap: 24px;
  }
  .cat-hero-media {
    width: 100%;
  }
  .cat-card {
    flex-direction: column;
    padding: 16px;
  }
  .cat-card-img {
    width: 100%;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .carousel-arrow {
    display: none;
  }
  .carousel-card {
    min-width: 260px;
  }
  .related-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
}
@media (min-width: 768px) and (max-width: 1199px) {
  .review-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 通用工具 ===== */
.text-ellipsis {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* roulang page: article */
:root {
  --primary: #1E5EFF;
  --primary-hover: #1A52DB;
  --secondary: #06B6D4;
  --accent: #F97316;
  --bg: #F5F8FC;
  --card-bg: #FFFFFF;
  --alt-bg: #F8FAFD;
  --title-color: #0B1220;
  --text-color: #334155;
  --muted-color: #64748B;
  --border-color: #E8EEF5;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15,23,42,0.04), 0 8px 20px rgba(15,23,42,0.06);
  --shadow-hover: 0 4px 16px rgba(30,94,255,0.12);
  --transition: 0.25s ease;
  --sidebarw: 240px;
  --sidebarc: 72px;
  --topbarh: 56px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text-color);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 32px; }

/* ===== App Shell ===== */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebarw);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  background: var(--card-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 60;
  transition: transform 0.3s ease;
}
.brand {
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  border-bottom: 1px solid var(--border-color);
  gap: 10px;
}
.brand-mark {
  width: 32px; height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
  flex-shrink: 0;
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  white-space: nowrap;
}
.sidebar-nav {
  flex: 1;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-color);
  font-size: 15px;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.nav-item:hover { background: #F1F5F9; color: var(--title-color); }
.nav-item.active { background: #EEF4FF; color: var(--primary); font-weight: 600; }
.nav-icon { font-size: 18px; width: 24px; text-align: center; flex-shrink: 0; }
.sidebar-foot {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.version { font-size: 13px; color: var(--muted-color); white-space: nowrap; }
.btn-download {
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-download:hover { background: var(--primary-hover); box-shadow: 0 4px 14px rgba(30,94,255,0.25); }
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebarw);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== Topbar (mobile) ===== */
.topbar {
  display: none;
  position: sticky;
  top: 0;
  height: var(--topbarh);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 55;
}
.topbar-brand { font-size: 18px; font-weight: 800; color: var(--primary); }
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  padding: 10px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
}
.menu-toggle .bar {
  display: block;
  width: 20px; height: 2px;
  background: var(--title-color);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active .bar:nth-child(2) { opacity: 0; }
.menu-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11,18,32,0.45);
  z-index: 55;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.overlay.show { display: block; opacity: 1; }

/* ===== Article Main ===== */
.article-main {
  flex: 1;
  padding: 40px 0 60px;
}
.article-main .container {
  max-width: 860px;
  padding: 0 32px;
}
.breadcrumb {
  font-size: 13px;
  color: var(--muted-color);
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .current { color: var(--muted-color); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.crumb-sep { color: #CBD5E1; }

.article-header { margin-bottom: 24px; }
.article-header h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--title-color);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 13px;
  color: var(--muted-color);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }

.article-cover {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--alt-bg);
  margin-bottom: 36px;
}
.article-cover img { width: 100%; height: auto; object-fit: cover; }

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-color);
}
.article-body h2, .article-body h3, .article-body h4 {
  color: var(--title-color);
  font-weight: 700;
  line-height: 1.4;
  margin-top: 32px;
  margin-bottom: 14px;
}
.article-body h2 { font-size: 24px; }
.article-body h3 { font-size: 19px; }
.article-body h4 { font-size: 17px; }
.article-body p { margin-bottom: 18px; }
.article-body a { color: var(--primary); font-weight: 500; }
.article-body a:hover { text-decoration: underline; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--alt-bg);
  padding: 14px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-color);
  margin: 20px 0;
  font-style: normal;
}
.article-body img { border-radius: var(--radius); margin: 20px 0; }
.article-body ul, .article-body ol { margin: 16px 0 20px; padding-left: 24px; }
.article-body li { margin-bottom: 6px; }
.article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
.article-body th { background: var(--alt-bg); font-weight: 600; color: var(--title-color); }
.article-body th, .article-body td { border: 1px solid var(--border-color); padding: 10px 14px; text-align: left; }

/* Not found */
.not-found {
  max-width: 600px;
  margin: 40px auto;
  text-align: center;
  padding: 60px 32px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.not-found h2 { font-size: 24px; color: var(--title-color); margin-bottom: 12px; }
.not-found p { color: var(--muted-color); margin-bottom: 24px; font-size: 15px; }

/* Tags */
.article-tags {
  max-width: 760px;
  margin: 36px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  background: #EEF4FF;
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  transition: background var(--transition);
}
.tag:hover { background: #DBE6FF; }

/* Related */
.related-section { max-width: 860px; margin: 48px 0 0; }
.related-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--title-color);
  margin-bottom: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.related-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(30,94,255,0.25);
  transform: translateY(-2px);
}
.related-card img {
  width: 96px; height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background: var(--alt-bg);
}
.related-card span {
  font-size: 15px;
  font-weight: 500;
  color: var(--title-color);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* CTA */
.article-cta {
  max-width: 860px;
  margin: 48px 0 0;
  background: var(--primary);
  border-radius: var(--radius);
  padding: 40px 36px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.article-cta h2 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.article-cta p { font-size: 14px; opacity: 0.9; max-width: 420px; }
.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: var(--radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,0.16); }
.btn-white:active { transform: scale(0.98); }

/* Back links */
.back-links {
  max-width: 860px;
  margin: 32px 0 0;
  display: flex;
  gap: 24px;
  font-size: 14px;
}
.back-links a { color: var(--primary); font-weight: 500; }
.back-links a:hover { text-decoration: underline; }

/* ===== Footer ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.f-brand { font-size: 20px; font-weight: 800; color: var(--primary); margin-bottom: 10px; }
.footer-brand p { font-size: 14px; color: var(--muted-color); line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--title-color); margin-bottom: 14px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col a { font-size: 14px; color: var(--muted-color); transition: color var(--transition); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--muted-color);
}

/* ===== Responsive ===== */
@media (max-width: 1199px) and (min-width: 768px) {
  .sidebar { width: var(--sidebarc); }
  .main-wrapper { margin-left: var(--sidebarc); }
  .brand { padding: 0 16px; justify-content: center; }
  .brand-text { display: none; }
  .sidebar-nav { padding: 16px 10px; align-items: center; }
  .nav-item { justify-content: center; padding: 12px; }
  .nav-label { display: none; }
  .sidebar-foot { padding: 12px 10px; flex-direction: column; gap: 8px; }
  .version { display: none; }
  .btn-download { font-size: 0; width: 36px; height: 36px; padding: 0; display: flex; align-items: center; justify-content: center; }
  .btn-download::before { content: "↓"; font-size: 18px; font-weight: 700; }
}
@media (max-width: 767px) {
  .sidebar {
    width: 280px;
    transform: translateX(-100%);
    box-shadow: 0 0 40px rgba(11,18,32,0.18);
  }
  .sidebar.open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .topbar { display: flex; }
  .menu-toggle { display: flex; }
  .container { padding: 0 16px; }
  .article-main { padding: 24px 0 48px; }
  .article-main .container { padding: 0 16px; }
  .article-header h1 { font-size: 26px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-cta { padding: 28px 24px; flex-direction: column; align-items: flex-start; }
  .btn-white { width: 100%; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 4px; }
  .back-links { flex-direction: column; gap: 12px; }
}
@media (max-width: 520px) {
  .breadcrumb .current { max-width: 180px; }
  .article-cover { margin-bottom: 24px; }
  .related-card { padding: 12px; }
  .related-card img { width: 80px; height: 56px; }
}

/* roulang page: category1 */
:root {
  --primary: #1E5EFF;
  --primary-hover: #1A52DB;
  --primary-light: #EEF4FF;
  --accent: #06B6D4;
  --warning: #F97316;
  --bg: #F5F8FC;
  --bg-alt: #F8FAFD;
  --card-bg: #FFFFFF;
  --text: #0B1220;
  --text-body: #334155;
  --text-muted: #64748B;
  --border: #E8EEF5;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-tag: 4px;
  --shadow: 0 1px 2px rgba(15,23,42,0.04), 0 8px 20px rgba(15,23,42,0.06);
  --shadow-hover: 0 4px 16px rgba(30,94,255,0.12);
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --sidebar-w: 240px;
  --sidebar-w-sm: 72px;
  --content-max: 1200px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 15px;
  display: flex;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-hover); text-decoration: underline; }
img { display: block; max-width: 100%; }
button { font-family: var(--font); }
h1, h2, h3, h4, h5, h6 { color: var(--text); margin: 0; font-weight: 700; line-height: 1.3; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.container { max-width: var(--content-max); margin: 0 auto; padding: 0 32px; }

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
  line-height: 1;
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-hover);
}
.btn-primary:active { transform: scale(.98); }
.btn-primary:focus-visible { outline: 3px solid rgba(30,94,255,.2); outline-offset: 2px; }
.btn-sm { height: 36px; padding: 0 16px; font-size: 13px; }
.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 32px;
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
}
.btn-white:hover { background: #f0f4ff; color: var(--primary-hover); text-decoration: none; box-shadow: 0 4px 16px rgba(0,0,0,.12); }
.btn-white:active { transform: scale(.98); }

/* ===== 侧边导航 ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: #fff;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: width .25s;
}
.sidebar-brand {
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
}
.brand-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -.3px;
  white-space: nowrap;
}
.brand-logo:hover { color: var(--primary-hover); text-decoration: none; }
.logo-short { display: none; }
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-body);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background .2s, color .2s;
  white-space: nowrap;
}
.sidebar-nav a:hover { background: #F1F5F9; color: var(--text); text-decoration: none; }
.sidebar-nav a.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}
.nav-icon { font-size: 18px; width: 24px; text-align: center; flex-shrink: 0; }
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}
.version { font-size: 12px; color: var(--text-muted); }
.sidebar-footer .btn-primary { width: 100%; }

/* ===== 移动端顶栏 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
}
.mobile-logo { font-size: 18px; font-weight: 800; color: var(--primary); text-decoration: none; }
.hamburger {
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: 8px;
}
.hamburger:hover { background: var(--bg-alt); }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all .2s; }
.hamburger:focus-visible { outline: 3px solid rgba(30,94,255,.2); }

/* ===== 抽屉 ===== */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11,18,32,.45);
  z-index: 105;
  opacity: 0;
  transition: opacity .25s;
}
.drawer-overlay.show { opacity: 1; }
.drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  background: #fff;
  z-index: 110;
  transform: translateX(-100%);
  transition: transform .25s;
  flex-direction: column;
  padding: 0;
}
.drawer.show { transform: translateX(0); }
.drawer-header {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
}
.drawer-brand { font-size: 18px; font-weight: 800; color: var(--primary); }
.drawer-close { background: none; border: none; font-size: 20px; color: var(--text-muted); cursor: pointer; width: 36px; height: 36px; border-radius: 8px; }
.drawer-close:hover { background: var(--bg-alt); color: var(--text); }
.drawer-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; }
.drawer-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 8px;
  color: var(--text-body);
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
}
.drawer-nav a:hover { background: #F1F5F9; color: var(--text); text-decoration: none; }
.drawer-nav a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.drawer-download { margin: 16px; }

/* ===== 主内容 ===== */
.main-wrapper {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
}
.main-content { flex: 1; }

/* ===== Hero ===== */
.page-hero {
  background: #fff;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  min-height: 320px;
  padding-top: 40px;
  padding-bottom: 40px;
}
.hero-copy { flex: 1; }
.hero-copy h1 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.hero-copy p {
  font-size: 16px;
  color: var(--text-body);
  max-width: 480px;
  line-height: 1.8;
}
.hero-visual {
  flex: 0 0 380px;
  position: relative;
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-visual img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.hero-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--warning);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-tag);
  box-shadow: 0 2px 8px rgba(249,115,22,.25);
}

/* ===== 板块标题 ===== */
.section-heading { margin-bottom: 32px; }
.section-heading h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -.3px;
}
.section-heading p { color: var(--text-muted); font-size: 15px; }

/* ===== 快速上手 + 注意事项 ===== */
.guide-section { padding: 80px 0; background: var(--bg); }
.guide-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.guide-steps h2 { font-size: 26px; margin-bottom: 32px; }
.step-list { display: flex; flex-direction: column; gap: 0; }
.step-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.step-item:last-child { border-bottom: none; }
.step-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  flex-shrink: 0;
  width: 48px;
  text-align: left;
  font-variant-numeric: tabular-nums;
}
.step-content h3 { font-size: 18px; margin-bottom: 6px; }
.step-content p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }

.guide-notes {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
}
.guide-notes h2 { font-size: 20px; margin-bottom: 20px; }
.note-list { display: flex; flex-direction: column; gap: 14px; }
.note-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}
.note-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ===== 覆盖项目 ===== */
.sports-section { padding: 80px 0; background: #fff; }
.sports-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.sport-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
.sport-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: #d3e0ff;
}
.sport-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: var(--primary-light);
  border-radius: 12px;
  transition: background .2s;
}
.sport-card:hover .sport-icon { background: #dce7ff; }
.sport-info h3 { font-size: 17px; margin-bottom: 4px; }
.sport-info p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 平台特点 ===== */
.feature-section { padding: 80px 0; background: var(--bg-alt); border-top: 1px solid var(--border); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: left;
  transition: box-shadow .2s, transform .2s;
  position: relative;
  overflow: hidden;
}
.feature-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--primary);
  opacity: 0;
  transition: opacity .2s;
}
.feature-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.feature-item:hover::after { opacity: 1; }
.feature-item i {
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 16px;
  display: block;
}
.feature-item h3 { font-size: 16px; margin-bottom: 6px; }
.feature-item p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: #fff; }
.faq-container { max-width: 860px; }
.faq-container h2 { font-size: 26px; margin-bottom: 24px; text-align: center; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: color .2s;
}
.faq-question:hover { color: var(--primary); }
.faq-question:focus-visible { outline: 3px solid rgba(30,94,255,.2); outline-offset: -2px; border-radius: 4px; }
.faq-arrow { font-size: 14px; color: var(--text-muted); transition: transform .25s, color .2s; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-answer p {
  padding: 0 8px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 200px; }

/* ===== CTA ===== */
.cta-section { background: var(--primary); }
.cta-inner {
  padding-top: 64px;
  padding-bottom: 64px;
  text-align: center;
  color: #fff;
}
.cta-inner h2 { font-size: 28px; color: #fff; margin-bottom: 10px; }
.cta-inner p { font-size: 15px; color: rgba(255,255,255,.85); margin-bottom: 28px; }

/* ===== 页脚 ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .f-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.7; max-width: 300px; }
.footer-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 13px; color: var(--text-body); text-decoration: none; transition: color .2s; }
.footer-col ul a:hover { color: var(--primary); text-decoration: underline; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .sidebar { width: var(--sidebar-w-sm); }
  .main-wrapper { margin-left: var(--sidebar-w-sm); }
  .sidebar-brand { padding: 0 16px; }
  .brand-logo .logo-full { display: none; }
  .brand-logo .logo-short { display: block; font-size: 22px; }
  .sidebar-nav { padding: 12px 8px; }
  .sidebar-nav a { justify-content: center; padding: 12px 8px; }
  .nav-label { display: none; }
  .sidebar-footer { padding: 12px 8px; align-items: center; }
  .sidebar-footer .btn-primary { padding: 0 8px; font-size: 12px; }
  .sidebar-footer .version { display: none; }
  .hero-visual { flex-basis: 300px; }
}

@media (max-width: 991px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { flex-basis: 240px; }
}

@media (max-width: 767px) {
  body { flex-direction: column; }
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-wrapper { margin-left: 0; padding-top: 56px; }
  .container { padding: 0 16px; }
  .hero-inner { flex-direction: column; gap: 24px; padding-top: 32px; padding-bottom: 32px; min-height: auto; }
  .hero-copy h1 { font-size: 26px; }
  .hero-copy p { font-size: 14px; }
  .hero-visual { flex: 1 1 auto; width: 100%; }
  .hero-visual img { height: 180px; }
  .guide-section, .sports-section, .feature-section, .faq-section { padding: 48px 0; }
  .guide-steps h2, .section-heading h2, .faq-container h2 { font-size: 22px; }
  .sports-grid { grid-template-columns: 1fr; }
  .sport-card { padding: 18px; }
  .feature-grid { grid-template-columns: 1fr; }
  .step-num { font-size: 24px; width: 40px; }
  .cta-inner { padding-top: 48px; padding-bottom: 48px; }
  .cta-inner h2 { font-size: 24px; }
  .btn-primary, .btn-white { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .drawer { display: flex; }
  .drawer-overlay { display: block; }
}

/* roulang page: category2 */
:root {
            --primary: #1E5EFF;
            --primary-hover: #1A52DB;
            --secondary: #06B6D4;
            --accent: #F97316;
            --bg-page: #F5F8FC;
            --bg-card: #FFFFFF;
            --bg-alt: #F8FAFD;
            --text-title: #0B1220;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #E8EEF5;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 20px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 4px 16px rgba(30, 94, 255, 0.12);
            --transition: 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-page);
            color: var(--text-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }

        /* ===== 布局 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform 0.3s ease, width 0.3s ease;
        }
        .main-content {
            margin-left: 240px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        /* ===== 侧边导航 ===== */
        .sidebar-logo {
            height: 64px;
            display: flex;
            align-items: center;
            padding: 0 24px;
            border-bottom: 1px solid var(--border);
            flex-shrink: 0;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo-full {
            display: inline;
        }
        .logo-mini {
            display: none;
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            overflow-y: auto;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: background var(--transition), color var(--transition);
            margin-bottom: 4px;
        }
        .sidebar-nav a:hover {
            background: #F1F5F9;
        }
        .sidebar-nav a.active {
            background: #EEF4FF;
            color: var(--primary);
            font-weight: 600;
        }
        .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .nav-label {
            white-space: nowrap;
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border);
            flex-shrink: 0;
        }
        .sidebar-version {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
            text-align: center;
        }
        .btn-sidebar {
            width: 100%;
            justify-content: center;
            font-size: 14px;
            height: 40px;
        }

        /* ===== 移动端顶栏 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 101;
        }
        .mobile-logo {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
        }
        .hamburger {
            font-size: 20px;
            color: var(--text-title);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: #F1F5F9;
        }
        .sidebar-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 99;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== 按钮 ===== */
        .btn-primary,
        .btn-outline,
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-card);
            transition: all var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 16px rgba(30, 94, 255, 0.25);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus {
            outline: 3px solid rgba(30, 94, 255, 0.2);
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background: #EEF4FF;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: scale(0.98);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
        }
        .btn-white:hover {
            background: #F1F5F9;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
        }
        .btn-white:active {
            transform: scale(0.98);
        }

        /* ===== Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #F8FAFD 0%, #EEF4FF 100%);
            border-bottom: 1px solid var(--border);
            padding: 48px 0;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .hero-content {
            flex: 1.2;
        }
        .hero-content h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .hero-content p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 520px;
            line-height: 1.8;
        }
        .hero-actions {
            margin-top: 24px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-visual {
            flex: 0.8;
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            max-height: 280px;
            object-fit: cover;
            border-radius: 16px;
            box-shadow: var(--shadow-card);
        }
        .hero-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
            z-index: 2;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-white {
            background: var(--bg-card);
        }
        .section-head {
            margin-bottom: 32px;
        }
        .section-head.text-center {
            text-align: center;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
        }
        .section-head p {
            color: var(--text-muted);
            margin-top: 8px;
            font-size: 15px;
        }

        /* ===== 步骤区 ===== */
        .steps-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px dashed var(--border);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(30, 94, 255, 0.2);
        }
        .step-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
        }
        .step-body p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== 注意事项卡 ===== */
        .notice-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .notice-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            padding-left: 14px;
            border-left: 3px solid var(--primary);
        }
        .notice-card ul li {
            display: flex;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            line-height: 1.7;
        }
        .notice-card ul li:last-child {
            border-bottom: none;
        }
        .notice-card ul li::before {
            content: "•";
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
        }

        /* ===== 速查清单 ===== */
        .check-list {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px 40px;
            box-shadow: var(--shadow-card);
        }
        .check-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .check-item:last-child {
            border-bottom: none;
        }
        .check-item i {
            color: var(--secondary);
            margin-top: 4px;
            font-size: 16px;
            flex-shrink: 0;
        }
        .check-item strong {
            color: var(--text-title);
            font-weight: 600;
        }

        /* ===== 安全提示条 ===== */
        .safe-tip-bar {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #EEF4FF;
            border: 1px solid #D8E4FF;
            border-radius: 16px;
            padding: 20px 24px;
        }
        .safe-tip-bar>i {
            font-size: 26px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .safe-tip-bar strong {
            color: var(--text-title);
            font-weight: 600;
            font-size: 15px;
        }
        .safe-tip-bar p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            border-top: 1px solid var(--border);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            transition: color var(--transition);
            text-align: left;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-arrow {
            transition: transform 0.3s ease;
            color: var(--text-muted);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 260px;
        }
        .faq-answer p {
            padding: 0 0 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 40px 0 80px;
        }
        .cta-bar {
            background: var(--primary);
            border-radius: 24px;
            padding: 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-bar h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
        }
        .cta-bar p {
            color: rgba(255, 255, 255, 0.85);
            margin: 12px 0 24px;
            font-size: 15px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
        }
        .f-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */

        /* 平板 768-1199 */
        @media (max-width: 1199px) {
            .sidebar {
                width: 72px;
            }
            .main-content {
                margin-left: 72px;
            }
            .sidebar-logo {
                padding: 0;
                justify-content: center;
            }
            .sidebar-brand {
                justify-content: center;
            }
            .logo-full {
                display: none;
            }
            .logo-mini {
                display: inline-flex;
                width: 36px;
                height: 36px;
                background: var(--primary);
                color: #fff;
                border-radius: var(--radius-btn);
                align-items: center;
                justify-content: center;
                font-size: 16px;
                font-weight: 800;
            }
            .sidebar-nav {
                padding: 16px 8px;
            }
            .sidebar-nav a {
                justify-content: center;
                padding: 10px;
            }
            .sidebar-nav a .nav-label {
                display: none;
            }
            .sidebar-nav a .nav-icon {
                font-size: 20px;
            }
            .sidebar-footer {
                padding: 12px 8px;
                text-align: center;
            }
            .sidebar-version {
                display: none;
            }
            .btn-sidebar {
                padding: 0 6px;
                font-size: 12px;
                height: 36px;
                width: 100%;
            }
            .container {
                padding: 0 24px;
            }
        }

        /* 手机 <768 */
        @media (max-width: 767px) {
            .sidebar {
                width: 280px;
                transform: translateX(-100%);
                top: 56px;
                height: calc(100vh - 56px);
                box-shadow: 4px 0 24px rgba(15, 23, 42, 0.08);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-logo {
                padding: 0 24px;
                justify-content: flex-start;
            }
            .sidebar-brand {
                justify-content: flex-start;
            }
            .logo-full {
                display: inline;
            }
            .logo-mini {
                display: none;
            }
            .sidebar-nav {
                padding: 16px 12px;
            }
            .sidebar-nav a {
                justify-content: flex-start;
                padding: 10px 14px;
            }
            .sidebar-nav a .nav-label {
                display: inline;
            }
            .sidebar-nav a .nav-icon {
                font-size: 18px;
            }
            .sidebar-footer {
                padding: 16px 20px;
                text-align: left;
            }
            .sidebar-version {
                display: block;
                text-align: left;
            }
            .btn-sidebar {
                font-size: 14px;
                height: 40px;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 48px 0;
            }
            .page-hero {
                padding: 24px 0;
                min-height: auto;
            }
            .hero-inner {
                flex-direction: column;
                gap: 24px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
            }
            .hero-visual img {
                max-height: 220px;
            }
            .hero-badge {
                top: 8px;
                right: 8px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .steps-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .step-item {
                padding: 20px 0;
            }
            .step-num {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
            .notice-card {
                padding: 24px;
            }
            .check-list {
                grid-template-columns: 1fr;
                padding: 24px;
                gap: 0;
            }
            .safe-tip-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
            }
            .cta-section {
                padding: 32px 0 48px;
            }
            .cta-bar {
                padding: 32px 20px;
                border-radius: 16px;
            }
            .cta-bar h2 {
                font-size: 22px;
            }
            .cta-bar .btn-white {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }