/* roulang page: index */
:root {
  --bg-base: #F5F1E8;
  --bg-deep: #1D2320;
  --bg-card: #FFFFFF;
  --bg-soft: #EFE9DE;
  --bg-chip: #E7DFD1;
  --primary: #3B5A43;
  --primary-hover: #2E4835;
  --accent: #B8894F;
  --accent-soft: #D6B78A;
  --ink: #23251F;
  --ink-2: #5C6258;
  --white: #FFFFFF;
  --line: #D8D2C6;
  --line-dark: rgba(255,255,255,0.24);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-1: 0 2px 8px rgba(30,40,35,0.06);
  --shadow-2: 0 12px 30px rgba(30,40,35,0.12);
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 22px;
  --text-2xl: 28px;
  --text-3xl: 38px;
  --text-4xl: 48px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); font-size: var(--text-base); line-height: 1.7; color: var(--ink); background: var(--bg-base); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: var(--text-base); }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 96px 0; }
.section-head { display: flex; align-items: flex-end; gap: 24px; margin-bottom: 48px; position: relative; }
.section-num { font-size: 32px; font-weight: 700; color: var(--accent); line-height: 1; letter-spacing: 1px; }
.section-head-line { width: 40px; height: 2px; background: var(--accent); flex-shrink: 0; margin-bottom: 8px; }
.section-head-content { flex: 1; }
.section-title { font-size: var(--text-2xl); font-weight: 700; color: var(--ink); line-height: 1.35; }
.section-desc { margin-top: 8px; font-size: var(--text-base); color: var(--ink-2); max-width: 640px; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 28px; border-radius: 10px; font-size: var(--text-base); font-weight: 600; transition: all 0.25s ease; cursor: pointer; line-height: 1.4; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: var(--shadow-1); }
.btn-primary:active { background: #243A2B; }
.btn-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-outline { background: transparent; color: var(--ink); border: 1px solid var(--ink-2); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-outline:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-gold { background: var(--accent); color: #2A2118; }
.btn-gold:hover { background: var(--accent-soft); box-shadow: var(--shadow-1); }
.btn-gold:active { background: #A57743; }
.btn-ghost-light { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.8); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.12); border-color: var(--white); }

/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: 72px; background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); transition: box-shadow 0.3s ease; }
.site-header.scrolled { box-shadow: 0 4px 20px rgba(30,40,35,0.08); }
.header-inner { max-width: var(--container); margin: 0 auto; height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-box { width: 36px; height: 36px; border-radius: 8px; background: var(--primary); display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 20px; font-weight: 700; }
.logo-text { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: 1px; position: relative; }
.logo-text::after { content: ''; position: absolute; bottom: -3px; left: 0; width: 0; height: 2px; background: var(--accent); transition: width 0.3s ease; }
.logo:hover .logo-text::after { width: 100%; }
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a { font-size: var(--text-base); color: var(--ink-2); font-weight: 500; position: relative; padding: 4px 2px; }
.main-nav a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--accent); transition: width 0.3s ease; }
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-cta .btn { padding: 9px 18px; font-size: var(--text-sm); }
.btn-ghost-navy { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-ghost-navy:hover { background: rgba(184,137,79,0.08); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 10px; background: none; border: none; cursor: pointer; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); transition: all 0.3s ease; border-radius: 2px; }

/* Hero */
.hero { position: relative; min-height: 85vh; display: flex; align-items: center; background: url('/assets/images/backpic/back-1.jpg') center center/cover no-repeat; padding-top: 72px; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(45deg, rgba(29,35,32,0.85) 0%, rgba(20,25,22,0.4) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 760px; padding: 60px 20px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px; border-radius: 100px; border: 1px solid rgba(184,137,79,0.8); background: rgba(184,137,79,0.12); color: #E8CBA0; font-size: var(--text-sm); letter-spacing: 1px; margin-bottom: 24px; }
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-soft); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.6; transform: scale(0.8); } }
.hero h1 { font-size: var(--text-4xl); font-weight: 800; color: var(--white); line-height: 1.2; margin-bottom: 20px; letter-spacing: 1px; animation: fadeUp 0.6s ease-out both; }
.hero-sub { font-size: 18px; color: rgba(255,255,255,0.8); line-height: 1.7; max-width: 720px; margin-bottom: 32px; animation: fadeUp 0.6s 0.15s ease-out both; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; animation: fadeUp 0.6s 0.3s ease-out both; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; animation: fadeUp 0.6s 0.4s ease-out both; }
.hero-tag { padding: 6px 16px; border: 1px solid rgba(255,255,255,0.5); border-radius: 100px; color: rgba(255,255,255,0.92); font-size: var(--text-sm); background: rgba(255,255,255,0.06); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.hero-channel { position: absolute; bottom: 0; left: 0; right: 0; z-index: 2; background: rgba(29,35,32,0.6); backdrop-filter: blur(8px); border-top: 1px solid rgba(255,255,255,0.12); padding: 12px 20px; animation: fadeUp 0.6s 0.5s ease-out both; }
.channel-inner { max-width: var(--container); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.channel-label { color: var(--accent-soft); font-size: var(--text-xs); letter-spacing: 2px; }
.channel-status { display: flex; gap: 20px; align-items: center; }
.channel-item { display: flex; align-items: center; gap: 6px; font-size: var(--text-xs); color: rgba(255,255,255,0.85); }
.channel-item .dot { width: 6px; height: 6px; border-radius: 50%; background: #7BC47F; }

/* Services */
.services-section { background: var(--bg-soft); padding: 96px 0; overflow: hidden; }
.services-track-wrap { position: relative; }
.services-track { display: flex; gap: 20px; overflow-x: auto; scroll-behavior: smooth; padding-bottom: 12px; -ms-overflow-style: none; scrollbar-width: none; }
.services-track::-webkit-scrollbar { display: none; }
.service-card { flex: 0 0 280px; height: 380px; background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--line); transition: all 0.25s ease; box-shadow: var(--shadow-1); }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--primary); }
.service-card-cover { position: relative; height: 60%; overflow: hidden; }
.service-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.service-card:hover .service-card-cover img { transform: scale(1.05); }
.service-card-num { position: absolute; top: 12px; left: 12px; width: 36px; height: 36px; border-radius: 50%; background: rgba(184,137,79,0.85); color: #fff; font-size: var(--text-xs); font-weight: 700; display: flex; align-items: center; justify-content: center; z-index: 2; }
.service-card-badge { position: absolute; top: 12px; right: 12px; padding: 4px 14px; border-radius: 100px; background: rgba(255,255,255,0.92); color: var(--accent); font-size: var(--text-xs); font-weight: 600; border: 1px solid rgba(184,137,79,0.4); z-index: 2; }
.service-card-body { padding: 20px; display: flex; flex-direction: column; justify-content: space-between; height: 40%; }
.service-card-body h3 { font-size: var(--text-lg); font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.service-card-body p { font-size: var(--text-sm); color: var(--ink-2); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.service-card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.service-more { font-size: var(--text-sm); color: var(--primary); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }
.service-more .arrow { transition: transform 0.25s ease; }
.service-more:hover .arrow { transform: translateX(4px); }
.service-book-btn { padding: 6px 16px; background: var(--primary); color: #fff; font-size: var(--text-sm); border-radius: 8px; font-weight: 500; transition: background 0.25s ease; }
.service-book-btn:hover { background: var(--primary-hover); }
.track-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--accent); background: var(--bg-card); color: var(--accent); font-size: 18px; display: flex; align-items: center; justify-content: center; z-index: 5; cursor: pointer; transition: all 0.25s ease; box-shadow: var(--shadow-1); }
.track-arrow:hover { background: var(--accent); color: #fff; }
.track-arrow.prev { left: -10px; }
.track-arrow.next { right: -10px; }

/* Data */
.data-section { background: var(--bg-deep); color: var(--white); padding: 96px 0; }
.data-section .section-title { color: var(--white); }
.data-section .section-desc { color: rgba(255,255,255,0.7); }
.data-section .section-num { color: var(--accent-soft); }
.data-section .section-head-line { background: var(--accent-soft); }
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; margin-top: 48px; }
.data-item { text-align: center; padding: 20px 10px; transition: all 0.3s ease; }
.data-item:hover { transform: translateY(-2px); }
.data-num { font-size: 56px; font-weight: 700; color: var(--accent-soft); line-height: 1.2; transition: all 0.4s ease; }
.data-item:hover .data-num { transform: translateY(2px); }
.data-label { font-size: var(--text-base); color: rgba(255,255,255,0.92); margin: 12px 0 16px; letter-spacing: 2px; }
.data-line { width: 40px; height: 2px; background: rgba(255,255,255,0.25); margin: 0 auto; transition: all 0.4s ease; }
.data-item:hover .data-line { width: 70%; background: var(--accent-soft); }
.data-sub { font-size: var(--text-sm); color: rgba(255,255,255,0.5); margin-top: 12px; }

/* Cases */
.cases-section { background: var(--bg-base); padding: 96px 0; }
.cases-grid { display: grid; grid-template-columns: 8fr 4fr; gap: 24px; }
.case-left { display: flex; flex-direction: column; gap: 24px; }
.case-main-card { position: relative; height: 320px; border-radius: var(--radius-md); overflow: hidden; background: url('/assets/images/coverpic/cover-1.jpg') center center/cover no-repeat; }
.case-main-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(29,35,32,0.75) 0%, rgba(29,35,32,0.2) 100%); transition: all 0.4s ease; }
.case-main-card:hover::before { background: linear-gradient(to top, rgba(29,35,32,0.85) 0%, rgba(29,35,32,0.3) 100%); }
.case-main-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 28px; z-index: 2; }
.case-main-tag { font-size: var(--text-xs); color: var(--accent-soft); letter-spacing: 1px; margin-bottom: 8px; }
.case-main-title { font-size: var(--text-2xl); font-weight: 700; color: var(--white); margin-bottom: 8px; }
.case-main-desc { font-size: var(--text-sm); color: rgba(255,255,255,0.75); margin-bottom: 16px; }
.case-link { display: inline-flex; align-items: center; gap: 6px; color: var(--white); font-size: var(--text-sm); font-weight: 500; }
.case-link .arrow { transition: transform 0.25s ease; }
.case-link:hover .arrow { transform: translateX(4px); }
.case-main-card .case-link:hover { color: var(--accent-soft); }
.case-main-card-secondary { height: 260px; border-radius: var(--radius-md); overflow: hidden; position: relative; background: url('/assets/images/coverpic/cover-2.jpg') center center/cover no-repeat; }
.case-main-card-secondary::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(29,35,32,0.7) 0%, rgba(29,35,32,0.15) 100%); }
.case-secondary-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; z-index: 2; }
.case-secondary-title { font-size: var(--text-xl); color: var(--white); font-weight: 600; margin-bottom: 6px; }
.case-secondary-desc { font-size: var(--text-sm); color: rgba(255,255,255,0.7); }
.case-right { background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--line); padding: 28px; display: flex; flex-direction: column; }
.case-right-title { font-size: var(--text-lg); font-weight: 600; color: var(--ink); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.case-update-list { flex: 1; }
.case-update-item { display: flex; align-items: center; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.case-update-item:last-child { border-bottom: none; }
.ep-num { font-size: var(--text-xs); color: var(--accent); font-weight: 700; letter-spacing: 1px; flex-shrink: 0; }
.case-update-text { flex: 1; }
.case-update-text .name { font-size: var(--text-sm); font-weight: 500; color: var(--ink); margin-bottom: 2px; }
.case-update-text .sub { font-size: var(--text-xs); color: var(--ink-2); }
.case-update-status { font-size: var(--text-xs); color: #3C8A4D; font-weight: 500; flex-shrink: 0; }
.case-right-footer { margin-top: auto; padding-top: 16px; }
.case-view-all { width: 100%; text-align: center; font-size: var(--text-sm); color: var(--primary); font-weight: 500; padding: 10px; border-radius: 8px; transition: background 0.25s ease; }
.case-view-all:hover { background: rgba(59,90,67,0.06); }

/* Plans */
.plans-section { background: var(--bg-card); padding: 96px 0; }
.plans-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; max-width: 1100px; margin: 0 auto; }
.plan-card { background: var(--bg-card); border: 1px solid var(--line); border-radius: 16px; padding: 36px 28px; box-shadow: var(--shadow-1); transition: all 0.25s ease; position: relative; display: flex; flex-direction: column; }
.plan-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.plan-card.featured { border-top: 3px solid var(--accent); transform: scale(1.05); box-shadow: var(--shadow-2); }
.plan-card.featured:hover { transform: scale(1.05) translateY(-4px); }
.plan-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #2A2118; font-size: var(--text-xs); font-weight: 700; padding: 4px 16px; border-radius: 100px; letter-spacing: 1px; }
.plan-name { font-size: var(--text-xl); font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.plan-desc { font-size: var(--text-sm); color: var(--ink-2); margin-bottom: 20px; }
.plan-divider { height: 1px; background: var(--line); margin-bottom: 20px; }
.plan-list { list-style: none; margin-bottom: 28px; flex: 1; }
.plan-list li { display: flex; align-items: flex-start; gap: 10px; font-size: var(--text-sm); color: var(--ink-2); padding: 6px 0; line-height: 1.5; }
.plan-list li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; margin-top: 8px; }
.plan-btn { width: 100%; }
.plan-btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.plan-btn-outline:hover { background: rgba(59,90,67,0.06); }

/* FAQ */
.faq-section { background: var(--bg-soft); padding: 96px 0; }
.faq-wrap { max-width: 840px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--line); margin-bottom: 16px; overflow: hidden; transition: border-color 0.25s ease; }
.faq-item:hover { border-color: rgba(184,137,79,0.4); }
.faq-item.open { border-color: var(--accent); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 22px 28px; cursor: pointer; font-size: var(--text-lg); font-weight: 600; color: var(--ink); transition: all 0.25s ease; user-select: none; }
.faq-question:hover { color: var(--primary); }
.faq-icon { width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--accent); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 18px; font-weight: 400; transition: transform 0.35s ease, background 0.25s ease; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 28px 24px; font-size: var(--text-base); color: var(--ink-2); line-height: 1.7; border-top: 1px solid var(--line); padding-top: 16px; }

/* CTA / Contact */
.cta-section { background: var(--bg-deep); padding: 96px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.jpg') center center/cover no-repeat; opacity: 0.25; }
.cta-section::after { content: ''; position: absolute; inset: 0; background: rgba(29,35,32,0.86); }
.cta-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 6fr 6fr; gap: 48px; }
.cta-left { display: flex; flex-direction: column; justify-content: center; }
.cta-left h2 { font-size: var(--text-3xl); font-weight: 700; color: var(--white); line-height: 1.3; margin-bottom: 16px; }
.cta-left p { color: rgba(255,255,255,0.7); font-size: var(--text-base); margin-bottom: 24px; }
.cta-hours { color: var(--accent-soft); font-size: var(--text-sm); letter-spacing: 1px; }
.cta-card { background: var(--bg-card); border-radius: var(--radius-md); padding: 36px; box-shadow: var(--shadow-2); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: var(--text-sm); font-weight: 500; color: var(--ink); margin-bottom: 8px; }
.form-control { width: 100%; height: 44px; border: 1px solid var(--line); border-radius: 8px; padding: 0 14px; font-size: var(--text-base); color: var(--ink); background: var(--bg-card); transition: border-color 0.25s ease, box-shadow 0.25s ease; appearance: none; -webkit-appearance: none; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,90,67,0.15); }
textarea.form-control { height: auto; min-height: 90px; padding: 12px 14px; resize: vertical; }
.select-wrap { position: relative; }
.select-wrap::after { content: ''; position: absolute; right: 14px; top: 50%; transform: translateY(-50%) rotate(45deg); width: 8px; height: 8px; border-right: 2px solid var(--ink-2); border-bottom: 2px solid var(--ink-2); pointer-events: none; }
.btn-submit { width: 100%; padding: 14px; font-size: var(--text-base); font-weight: 600; }
.privacy-note { font-size: var(--text-xs); color: #9AA095; text-align: center; margin-top: 12px; }

/* Footer */
.site-footer { background: var(--bg-deep); padding: 64px 0 0; border-top: 1px solid rgba(255,255,255,0.2); }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 5fr 4fr 3fr; gap: 48px; padding-bottom: 48px; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-logo .logo-box { background: rgba(184,137,79,0.85); }
.footer-logo-text { font-size: 22px; font-weight: 800; color: var(--white); }
.footer-desc { font-size: var(--text-sm); color: rgba(255,255,255,0.6); line-height: 1.6; margin-bottom: 20px; max-width: 320px; }
.footer-social { display: flex; gap: 14px; }
.footer-social a { width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.25); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.7); transition: all 0.25s ease; }
.footer-social a:hover { border-color: var(--accent); color: var(--accent-soft); background: rgba(184,137,79,0.1); }
.footer-heading { font-size: var(--text-base); font-weight: 600; color: var(--white); margin-bottom: 20px; letter-spacing: 1px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: var(--text-sm); color: rgba(255,255,255,0.6); transition: color 0.25s ease; }
.footer-links a:hover { color: var(--accent-soft); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: var(--text-sm); color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.footer-contact .icon { color: var(--accent-soft); flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px; text-align: center; font-size: var(--text-xs); color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent-soft); }

/* Back to top */
.back-top { position: fixed; right: 28px; bottom: 28px; width: 44px; height: 44px; border-radius: 50%; background: var(--bg-card); border: 1px solid var(--accent); color: var(--accent); font-size: 18px; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-2); opacity: 0; visibility: hidden; transition: all 0.3s ease; z-index: 999; cursor: pointer; }
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--accent); color: #fff; transform: translateY(-3px); }
.back-top:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Error & misc */
@keyframes fadeDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.toast-msg { position: fixed; top: 100px; left: 50%; transform: translateX(-50%); background: var(--bg-deep); color: var(--white); padding: 14px 32px; border-radius: 10px; box-shadow: var(--shadow-2); z-index: 9999; font-size: var(--text-sm); animation: fadeDown 0.4s ease; opacity: 0; visibility: hidden; transition: opacity 0.4s ease, visibility 0.4s ease; }
.toast-msg.show { opacity: 1; visibility: visible; }

/* Responsive */
@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: 1fr; }
  .plans-grid { gap: 20px; }
  .plan-card.featured { transform: scale(1.02); }
  .plan-card.featured:hover { transform: scale(1.02) translateY(-4px); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 40px; }
  .main-nav { gap: 20px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .services-section, .data-section, .cases-section, .plans-section, .faq-section, .cta-section { padding: 64px 0; }
  .menu-toggle { display: flex; }
  .main-nav { position: fixed; top: 72px; right: -100%; width: 280px; height: calc(100vh - 72px); background: var(--bg-card); flex-direction: column; gap: 0; padding: 32px 24px; transition: right 0.3s ease; box-shadow: -4px 0 20px rgba(0,0,0,0.08); z-index: 999; }
  .main-nav.open { right: 0; }
  .main-nav a { padding: 14px 0; font-size: var(--text-lg); border-bottom: 1px solid var(--line); width: 100%; }
  .main-nav a::after { display: none; }
  .nav-cta { margin-left: auto; }
  .nav-cta .btn-ghost-navy { display: none; }
  .nav-cta .btn-primary span { display: none; }
  .nav-cta .btn-primary { padding: 9px 14px; font-size: var(--text-xs); }
  .hero { min-height: 100vh; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: var(--text-base); }
  .hero-channel { padding: 10px 16px; }
  .channel-inner { flex-direction: column; gap: 8px; align-items: flex-start; }
  .data-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .data-num { font-size: 40px; }
  .cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .plans-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .plan-card.featured { transform: none; }
  .plan-card.featured:hover { transform: translateY(-4px); }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .case-right { margin-top: 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .section-head-line { margin-bottom: 0; }
  .back-top { right: 16px; bottom: 16px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .service-card { flex: 0 0 240px; }
  .data-num { font-size: 34px; }
  .cases-grid { gap: 16px; }
  .case-main-card { height: 250px; }
  .case-main-card-secondary { height: 200px; }
  .cta-card { padding: 24px; }
  .form-control { height: 42px; }
  .hero { padding-top: 60px; }
  .hero-content { padding: 40px 16px; }
  .hero-cta { flex-direction: column; gap: 12px; }
  .hero-cta .btn { width: 100%; }
  .hero-tags { gap: 8px; }
  .hero-tag { font-size: var(--text-xs); padding: 5px 12px; }
  .logo-text { font-size: 17px; }
  .nav-cta .btn-primary span { display: none; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --bg-base: #F5F1E8;
  --bg-deep: #1D2320;
  --bg-card: #FFFFFF;
  --bg-soft: #EFE9DE;
  --bg-chip: #E7DFD1;
  --primary: #3B5A43;
  --primary-hover: #2E4835;
  --accent: #B8894F;
  --accent-soft: #D6B78A;
  --ink: #23251F;
  --ink-2: #5C6258;
  --white: #FFFFFF;
  --line: #D8D2C6;
  --line-dark: rgba(255,255,255,0.24);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-1: 0 2px 8px rgba(30,40,35,0.06);
  --shadow-2: 0 12px 30px rgba(30,40,35,0.12);
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 22px;
  --text-2xl: 28px;
  --text-3xl: 38px;
  --text-4xl: 48px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all .25s ease; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: var(--text-sm); }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 导航 ===== */
.main-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s ease;
}
.main-header.scrolled {
  box-shadow: var(--shadow-2);
  border-top: 4px solid var(--accent);
}
.header-inner {
  max-width: 1200px;
  height: 72px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-box {
  width: 36px; height: 36px;
  background: var(--primary);
  color: var(--white);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700;
  line-height: 1;
}
.logo-text {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 1px;
}
.logo-text span { color: var(--primary); }
.logo:hover .logo-text { text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 4px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--ink-2);
  position: relative;
  padding: 6px 0;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: 10px;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  transition: all .25s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-outline-light {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-dark);
}
.btn-outline-light:hover {
  border-color: var(--accent);
  color: var(--primary);
  background: rgba(184,137,79,0.08);
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  border: 1px solid var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: var(--shadow-1);
  color: var(--white);
}
.btn-primary:active {
  background: #243A2B;
}
.btn-gold {
  background: var(--accent);
  color: var(--ink);
  border: 1px solid var(--accent);
}
.btn-gold:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
  box-shadow: var(--shadow-1);
}
.btn-sm {
  padding: 8px 18px;
  font-size: var(--text-xs);
  border-radius: 8px;
}
.btn-lg {
  padding: 14px 36px;
  font-size: var(--text-base);
  border-radius: 12px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
}
.menu-toggle span {
  width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px; right: 0; bottom: 0;
  width: 300px;
  background: var(--white);
  z-index: 999;
  padding: 32px 24px;
  flex-direction: column;
  gap: 20px;
  box-shadow: -8px 0 30px rgba(0,0,0,0.12);
  transform: translateX(100%);
  transition: transform .35s ease;
  overflow-y: auto;
}
.mobile-menu.open {
  transform: translateX(0);
}
.mobile-menu a {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--ink);
  padding: 8px 0;
  border-bottom: 1px solid var(--bg-soft);
}
.mobile-menu a.active { color: var(--primary); font-weight: 600; }
.mobile-menu .nav-cta {
  flex-direction: column;
  align-items: stretch;
  margin-top: 16px;
}
.mobile-menu .nav-cta .btn {
  width: 100%;
  justify-content: center;
}

/* ===== 分类 Hero ===== */
.category-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  background: linear-gradient(to right, rgba(29,35,32,0.88), rgba(20,25,22,0.55)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  color: var(--white);
  padding: 140px 0 60px;
}
.breadcrumb {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--accent-soft); }
.breadcrumb .sep { color: rgba(255,255,255,0.4); }
.category-hero h1 {
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.category-hero .hero-sub {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.8);
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-tags .tag {
  padding: 6px 18px;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.9);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all .25s ease;
}
.hero-tags .tag.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}
.hero-tags .tag:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.6);
}
.hero-tags .tag.active:hover { background: var(--accent-soft); }

/* ===== 筛选条 ===== */
.filter-bar {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 72px;
  z-index: 100;
}
.filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.filter-tabs {
  display: flex;
  gap: 28px;
}
.filter-tab {
  font-size: var(--text-sm);
  color: var(--ink-2);
  font-weight: 500;
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
}
.filter-tab:hover { color: var(--accent); }
.filter-tab.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--accent);
}
.filter-count {
  font-size: var(--text-sm);
  color: var(--ink-2);
}

/* ===== 主内容区 ===== */
.main-content {
  padding: 48px 0 64px;
}
.content-grid {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 32px;
  align-items: start;
}

/* 列表卡片 */
.list-area {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.list-card {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 20px;
  display: flex;
  gap: 20px;
  transition: all .3s ease;
  position: relative;
}
.list-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-2);
  transform: translateY(-3px);
}
.list-card-cover {
  position: relative;
  width: 120px;
  min-height: 180px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-soft);
}
.list-card-cover img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform .4s ease;
}
.list-card:hover .list-card-cover img {
  transform: scale(1.04);
}
.card-no {
  position: absolute;
  top: 8px; left: 8px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(184,137,79,0.92);
  color: var(--ink);
  font-size: var(--text-xs);
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
  letter-spacing: -0.5px;
}
.list-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.card-title-row h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink);
}
.rating {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--ink-2);
  white-space: nowrap;
}
.rating-stars {
  position: relative;
  display: inline-block;
  font-size: 13px;
  line-height: 1;
  color: #ddd6ca;
  letter-spacing: 2px;
}
.rating-stars::after {
  content: "★★★★★";
  position: absolute;
  left: 0; top: 0;
  color: var(--accent);
  overflow: hidden;
  width: 96%;
  white-space: nowrap;
}
.rating-score { font-weight: 600; color: var(--ink); }
.card-desc {
  font-size: var(--text-sm);
  color: var(--ink-2);
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
  margin-top: auto;
}
.card-tags .mini-tag {
  padding: 3px 14px;
  background: var(--bg-chip);
  border-radius: 100px;
  font-size: var(--text-xs);
  color: var(--ink-2);
  font-weight: 500;
  transition: all .25s ease;
}
.card-tags .mini-tag.hot {
  background: rgba(184,137,79,0.14);
  color: #8B6B3F;
  border: 1px solid rgba(184,137,79,0.3);
}
.card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--bg-soft);
}
.detail-link {
  font-size: var(--text-sm);
  color: var(--ink);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all .25s ease;
}
.detail-link:hover { color: var(--primary); }
.detail-link:hover .arrow { transform: translateX(4px); }
.arrow { display: inline-block; transition: transform .25s ease; }

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  padding: 24px 0 4px;
  margin-top: 16px;
}
.page-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  transition: all .25s ease;
  cursor: pointer;
}
.page-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  font-weight: 600;
}
.page-btn.active:hover { background: var(--primary-hover); }
.page-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ===== 侧栏 ===== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 140px;
}
.side-card {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 24px;
}
.side-card .side-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
  position: relative;
  padding-bottom: 10px;
}
.side-card .side-title::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 32px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.side-card .side-sub {
  font-size: var(--text-xs);
  color: var(--ink-2);
  margin-bottom: 16px;
  padding-top: 4px;
}
.top5-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--bg-soft);
  cursor: pointer;
  transition: all .2s ease;
}
.top5-list li:last-child { border-bottom: none; }
.top5-list li:hover { padding-left: 4px; }
.top5-list .rank {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg-chip);
  color: var(--ink-2);
  font-size: var(--text-xs);
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.top5-list li:nth-child(1) .rank,
.top5-list li:nth-child(2) .rank,
.top5-list li:nth-child(3) .rank {
  background: rgba(184,137,79,0.18);
  color: #8B6B3F;
}
.top5-list .name {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--ink);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.top5-list li:hover .name { color: var(--primary); }
.top5-list .arrow-right {
  color: var(--ink-2);
  font-size: var(--text-xs);
  transition: all .2s ease;
}
.top5-list li:hover .arrow-right { color: var(--accent); transform: translateX(3px); }

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tags-cloud .tag {
  padding: 6px 16px;
  background: var(--white);
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-size: var(--text-xs);
  color: #8B6B3F;
  font-weight: 500;
  transition: all .25s ease;
  cursor: pointer;
}
.tags-cloud .tag:hover {
  background: var(--accent);
  color: var(--white);
}
.side-cta {
  background: var(--bg-deep);
  color: var(--white);
  border: none;
  position: relative;
  overflow: hidden;
}
.side-cta::before {
  content: '';
  position: absolute;
  top: -50%; right: -50%;
  width: 140%; height: 200%;
  background: radial-gradient(circle, rgba(184,137,79,0.2) 0%, transparent 70%);
}
.side-cta .side-cta-title {
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}
.side-cta .side-cta-desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}
.side-cta .btn {
  position: relative;
  z-index: 1;
}

/* ===== 相关阅读 ===== */
.related-read {
  padding: 64px 0;
  background: var(--bg-base);
}
.section-head {
  margin-bottom: 32px;
}
.section-head .gold-no {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--ink);
  margin-top: 4px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all .3s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: var(--accent);
}
.related-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.related-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.related-card:hover .related-cover img { transform: scale(1.05); }
.related-body {
  padding: 16px 20px 20px;
}
.related-body h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
  line-height: 1.5;
}
.related-body h3 a:hover { color: var(--primary); }
.related-date {
  font-size: var(--text-xs);
  color: var(--ink-2);
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(to right, rgba(29,35,32,0.9), rgba(20,25,22,0.7)), url('/assets/images/coverpic/cover-4.jpg') center/cover no-repeat;
  padding: 72px 0;
  color: var(--white);
}
.cta-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-text h2 {
  font-size: var(--text-3xl);
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.3;
}
.cta-text p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.75);
  max-width: 560px;
}
.cta-text .gold-line {
  color: var(--accent-soft);
  font-weight: 600;
  margin-top: 16px;
  font-size: var(--text-sm);
  letter-spacing: 1px;
}
.cta-btns {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.logo-box {
  width: 34px; height: 34px;
  background: var(--accent);
  color: var(--ink);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
}
.footer-logo-text {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 1px;
}
.footer-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-bottom: 18px;
  max-width: 360px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 34px; height: 34px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: all .25s ease;
}
.footer-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.footer-heading {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  transition: all .2s ease;
}
.footer-links a:hover { color: var(--accent-soft); padding-left: 4px; }
.footer-contact li {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.footer-contact .icon {
  color: var(--accent-soft);
  width: 18px; text-align: center;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 18px 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed;
  right: 28px; bottom: 28px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s ease;
  z-index: 999;
  box-shadow: var(--shadow-1);
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  background: var(--accent);
  color: var(--white);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
  .side-cta { grid-column: span 1; }
  .cta-wrap { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .nav-cta.cta-inline { display: none; }
  .menu-toggle {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .category-hero {
    min-height: 240px;
    padding: 120px 0 40px;
  }
  .category-hero h1 {
    font-size: 32px;
  }
  .category-hero .hero-sub {
    font-size: var(--text-base);
  }
  .filter-row {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 20px;
    height: auto;
    gap: 8px;
  }
  .filter-tabs { gap: 20px; }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    grid-template-columns: 1fr;
  }
  .list-card {
    flex-direction: column;
  }
  .list-card-cover {
    width: 100%;
    min-height: auto;
  }
  .list-card-cover img {
    height: 140px;
    width: 100%;
  }
}

@media (max-width: 520px) {
  .header-inner {
    padding: 0 16px;
  }
  .container {
    padding: 0 16px;
  }
  .card-title-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .cta-btns {
    flex-direction: column;
    width: 100%;
  }
  .cta-btns .btn { width: 100%; }
  .btn-lg { padding: 12px 28px; }
}

/* ===== 动效 ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.category-hero .breadcrumb { animation: fadeUp .5s ease .1s both; }
.category-hero h1 { animation: fadeUp .5s ease .2s both; }
.category-hero .hero-sub { animation: fadeUp .5s ease .3s both; }
.category-hero .hero-tags { animation: fadeUp .5s ease .4s both; }