/* roulang page: index */
/* ========== Reset & Base ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #3A6D8C;
  --primary-dark: #2C5269;
  --secondary: #E86A4A;
  --bg: #F6F8FA;
  --white: #FFFFFF;
  --dark: #17222E;
  --heading: #1F2A37;
  --body: #3F4B57;
  --muted: #74828F;
  --disabled: #A8B3BF;
  --border: #DCE4EB;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-full: 999px;
  --shadow: 0 8px 30px rgba(23, 34, 46, 0.12);
  --shadow-sm: 0 2px 10px rgba(23, 34, 46, 0.06);
  --transition: all .25s ease;
  --max-width: 1200px;
}
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--body);
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.3;
  letter-spacing: 0;
}
.section-sub {
  font-size: 15px;
  color: var(--muted);
  margin-top: 6px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.section-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.section-link:hover { color: var(--primary-dark); }
.section-link .arr { transition: transform .25s; display: inline-block; }
.section-link:hover .arr { transform: translateX(4px); }
::selection { background: rgba(58,109,140,.18); }

/* ========== Header / Nav ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 3px solid var(--primary);
  transition: var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: height .3s ease;
}
.site-header.scrolled .header-inner { height: 60px; }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 700;
  color: var(--heading);
  white-space: nowrap;
  letter-spacing: 0;
  flex-shrink: 0;
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
  border: 0;
}
.main-nav {
  display: flex;
  gap: 6px;
  flex: 1;
  justify-content: center;
  min-width: 0;
}
.nav-tab {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--body);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-tab:hover {
  background: rgba(58,109,140,.08);
  color: var(--primary-dark);
}
.nav-tab.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}
.header-cta {
  padding: 10px 24px;
  background: var(--secondary);
  color: #fff;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.header-cta:hover {
  background: #cf5b3e;
  transform: translateY(-1px);
}
.header-cta .arr { transition: transform .25s; }
.header-cta:hover .arr { transform: translateX(3px); }
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--white);
}
.hamburger span {
  width: 20px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  display: block;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  color: #fff;
  padding: 140px 0 110px;
  background: linear-gradient(135deg, #2C5269 0%, #3A6D8C 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(23,34,46,.82) 0%, rgba(23,34,46,.42) 55%, rgba(58,109,140,.35) 100%);
  z-index: 1;
}
.hero::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 160px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  z-index: 1;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232,106,74,.18);
  border: 1px solid rgba(232,106,74,.35);
  color: #FFD8CC;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 22px;
}
.hero-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--secondary);
  flex-shrink: 0;
}
.hero h1 {
  font-size: 52px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
  color: #fff;
  margin-bottom: 18px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255,255,255,.86);
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--secondary);
  color: #fff;
}
.btn-primary:hover {
  background: #cf5b3e;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(232,106,74,.3);
}
.btn-primary .arr { transition: transform .25s; display: inline-block; }
.btn-primary:hover .arr { transform: translateX(4px); }
.btn-secondary {
  background: transparent;
  border: 1px solid rgba(255,255,255,.7);
  color: #fff;
}
.btn-secondary:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
}
.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: 48px;
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.hero-stats .stat-item strong {
  display: block;
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.hero-stats .stat-item span {
  font-size: 13px;
  color: rgba(255,255,255,.7);
}

/* ========== Shelf ========== */
.shelf-section { padding: 64px 0 32px; }
.shelf-wrapper { position: relative; }
.shelf-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 12px 4px 20px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.shelf-track::-webkit-scrollbar { display: none; }
.shelf-card {
  flex: 0 0 200px;
  scroll-snap-align: start;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.shelf-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.shelf-cover {
  aspect-ratio: 2 / 3;
  overflow: hidden;
  position: relative;
}
.shelf-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.shelf-card:hover .shelf-cover img { transform: scale(1.05); }
.shelf-note {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  gap: 8px;
}
.shelf-note strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--heading);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.shelf-note span {
  font-size: 12px;
  background: rgba(232,106,74,.1);
  color: var(--secondary);
  padding: 2px 9px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  flex-shrink: 0;
}
.shelf-arrows {
  position: absolute;
  top: 42%;
  left: -16px;
  right: -16px;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}
.shelf-arrows button {
  pointer-events: auto;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--heading);
  border: 1px solid var(--border);
  transition: var(--transition);
  font-size: 16px;
}
.shelf-arrows button:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.shelf-fade {
  position: absolute;
  top: 0; bottom: 20px;
  width: 60px;
  pointer-events: none;
  z-index: 2;
}
.shelf-fade.left { left: 0; background: linear-gradient(to right, var(--bg), transparent); }
.shelf-fade.right { right: 0; background: linear-gradient(to left, var(--bg), transparent); }

/* ========== Featured ========== */
.featured-section { padding: 56px 0 64px; }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.f-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.f-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.f-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}
.f-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.f-card:hover .f-cover img { transform: scale(1.03); }
.f-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--secondary);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  letter-spacing: .02em;
}
.f-info {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.f-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.f-info p {
  font-size: 14px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.f-meta {
  font-size: 12px;
  color: var(--disabled);
  margin-top: auto;
  display: flex;
  gap: 10px;
  align-items: center;
  border-top: 1px solid #F0F3F7;
  padding-top: 12px;
}
.f-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--disabled); }

/* ========== Stats band ========== */
.stats-band {
  background: var(--dark);
  border-radius: 16px;
  padding: 40px 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.stats-band .stat-item {
  text-align: center;
  color: #fff;
}
.stats-band .stat-item strong {
  display: block;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.2;
  color: #fff;
}
.stats-band .stat-item strong em {
  font-style: normal;
  color: var(--secondary);
}
.stats-band .stat-item span {
  font-size: 13px;
  color: rgba(255,255,255,.62);
}

/* ========== Zones ========== */
.zone-section {
  padding: 60px 0;
  background: var(--white);
}
.zone-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
  padding: 36px 0;
}
.zone-row + .zone-row { border-top: 1px solid #EFF3F7; }
.zone-row.reverse .zone-visual { order: 2; }
.zone-row.reverse .zone-info { order: 1; }
.zone-visual {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
}
.zone-visual img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}
.zone-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(23,34,46,.32), transparent 60%);
}
.zone-info .zone-kicker {
  font-size: 13px;
  color: var(--secondary);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.zone-info h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 14px;
  line-height: 1.3;
  letter-spacing: 0;
}
.zone-info p {
  font-size: 15px;
  color: var(--body);
  margin-bottom: 18px;
}
.zone-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.zone-tags span {
  background: rgba(58,109,140,.08);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}
.zone-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 10px;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.zone-btn:hover {
  background: rgba(58,109,140,.08);
  color: var(--primary-dark);
  transform: translateY(-1px);
}
.zone-btn .arr { transition: transform .25s; }
.zone-btn:hover .arr { transform: translateX(3px); }

/* ========== News / CMS ========== */
.news-section { padding: 72px 0; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 26px;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.news-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.news-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}
.news-badge {
  background: rgba(58,109,140,.1);
  color: var(--primary-dark);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
}
.news-date {
  font-size: 12px;
  color: var(--disabled);
}
.news-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card p {
  font-size: 14px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .news-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-card:hover .news-link { color: var(--primary-dark); }
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 52px 24px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--muted);
}
.empty-state .empty-icon {
  font-size: 42px;
  display: block;
  margin-bottom: 10px;
  line-height: 1;
}
.empty-state p { font-size: 15px; }

/* ========== CTA ========== */
.cta-section { padding: 80px 0; }
.cta-block {
  position: relative;
  border-radius: 22px;
  background: var(--dark);
  overflow: hidden;
  padding: 56px 64px;
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 40px;
  align-items: center;
  color: #fff;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: .24;
}
.cta-block::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(58,109,140,.22);
  filter: blur(18px);
  pointer-events: none;
}
.cta-content {
  position: relative;
  z-index: 2;
}
.cta-content h3 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0;
  color: #fff;
  margin-bottom: 12px;
}
.cta-content p {
  font-size: 15px;
  color: rgba(255,255,255,.78);
  max-width: 480px;
  margin-bottom: 28px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.cta-visual {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}
.cta-qr {
  background: #fff;
  border-radius: 18px;
  padding: 20px;
  text-align: center;
  width: 190px;
  box-shadow: 0 12px 30px rgba(0,0,0,.24);
}
.cta-qr .qr-placeholder {
  width: 128px;
  height: 128px;
  background: var(--bg);
  border-radius: 10px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 40px;
  border: 1px solid var(--border);
}
.cta-qr p {
  font-size: 13px;
  font-weight: 500;
  color: var(--heading);
}

/* ========== FAQ ========== */
.faq-section {
  padding: 72px 0;
  background: var(--white);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: rgba(58,109,140,.32);
  box-shadow: var(--shadow-sm);
}
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  background: none;
  text-align: left;
  gap: 16px;
  line-height: 1.4;
}
.faq-q .faq-icon {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  border-radius: 50%;
  background: rgba(58,109,140,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  font-weight: 500;
  transition: var(--transition);
}
.faq-item.active .faq-icon {
  background: var(--secondary);
  color: #fff;
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .32s ease, padding .32s ease;
  padding: 0 24px;
  font-size: 14px;
  color: var(--body);
  line-height: 1.75;
}
.faq-item.active .faq-a {
  max-height: 300px;
  padding: 0 24px 22px;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.72);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr .9fr 1fr;
  gap: 52px;
  padding-bottom: 48px;
}
.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  letter-spacing: 0;
}
.footer-logo .logo-mark {
  background: rgba(255,255,255,.12);
  color: #fff;
  font-size: 13px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.58);
}
.footer-col h4 {
  font-size: 16px;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 14px;
  color: rgba(255,255,255,.62);
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  color: rgba(255,255,255,.62);
  margin-bottom: 12px;
}
.footer-contact .ic {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  margin-top: 4px;
  flex-shrink: 0;
  color: rgba(255,255,255,.7);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 18px 0;
  font-size: 13px;
  color: rgba(255,255,255,.46);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ========== Mobile Nav Overlay ========== */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 90;
}
.nav-overlay.active { opacity: 1; visibility: visible; }

/* ========== Responsive ========== */
@media (min-width: 769px) and (max-width: 1024px) {
  .featured-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 42px; }
  .hero-stats { gap: 28px; }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .main-nav {
    position: fixed;
    top: 0;
    right: -290px;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 90px 28px 28px;
    transition: right .32s ease;
    box-shadow: -10px 0 30px rgba(0,0,0,.12);
    margin: 0;
    z-index: 100;
    gap: 10px;
  }
  .main-nav.open { right: 0; }
  .nav-tab {
    font-size: 16px;
    padding: 12px 18px;
    border-radius: var(--radius);
    color: var(--heading);
    border: 1px solid transparent;
  }
  .nav-tab.active { background: var(--primary); color: #fff; }
  .hamburger { display: flex; }
  .header-cta { display: none; }
  .hero { min-height: 74vh; padding: 110px 0 90px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { gap: 20px; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { padding: 13px 24px; font-size: 14px; }
  .featured-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .zone-row { grid-template-columns: 1fr; gap: 28px; padding: 28px 0; }
  .zone-row.reverse .zone-visual { order: 0; }
  .zone-row.reverse .zone-info { order: 0; }
  .zone-visual img { height: 230px; }
  .stats-band { grid-template-columns: repeat(2, 1fr); padding: 32px 24px; }
  .news-grid { grid-template-columns: 1fr; }
  .cta-block { grid-template-columns: 1fr; padding: 36px 28px; }
  .cta-visual { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .shelf-card { flex-basis: 180px; }
  .shelf-arrows { display: none; }
}
@media (max-width: 576px) {
  .container { padding: 0 18px; }
  .section-title { font-size: 23px; }
  .hero h1 { font-size: 29px; }
  .hero-sub { font-size: 15px; }
  .hero-badge { font-size: 12px; padding: 5px 12px; }
  .featured-grid { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stats-band .stat-item strong { font-size: 24px; }
  .shelf-card { flex-basis: 140px; }
  .shelf-note { padding: 8px 10px; }
  .shelf-note strong { font-size: 13px; }
  .zone-info h3 { font-size: 22px; }
  .cta-block { padding: 32px 22px; }
  .cta-content h3 { font-size: 24px; }
  .cta-qr { width: 168px; padding: 16px; }
  .cta-qr .qr-placeholder { width: 108px; height: 108px; font-size: 32px; }
  .faq-q { font-size: 15px; padding: 17px 18px; }
  .faq-a { padding: 0 18px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats .stat-item strong { font-size: 22px; }
  .hero-stats { gap: 16px; }
}

/* ========== Focus & Accessibility ========== */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary:focus-visible, .btn-secondary:focus-visible, .header-cta:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.nav-tab:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}
img { background: #E3E9EF; }

/* roulang page: category1 */
:root {
      --primary: #3A6D8C;
      --primary-dark: #2C5269;
      --primary-light: #EAF1F6;
      --secondary: #E86A4A;
      --secondary-dark: #D95536;
      --bg: #F6F8FA;
      --white: #FFFFFF;
      --dark: #17222E;
      --text-title: #1F2A37;
      --text-body: #3F4B57;
      --text-muted: #74828F;
      --text-disable: #A8B3BF;
      --border: #E2E8F0;
      --radius-lg: 12px;
      --radius-md: 8px;
      --radius-sm: 6px;
      --shadow-hover: 0 8px 30px rgba(23, 34, 46, 0.12);
      --shadow-sm: 0 2px 8px rgba(23, 34, 46, 0.06);
      --max-width: 1200px;
      --transition: 0.25s ease;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
      font-size: 15px;
      line-height: 1.75;
      color: var(--text-body);
      background: var(--bg);
      letter-spacing: 0.01em;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

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

    input,
    textarea {
      font-family: inherit;
    }

    ul,
    ol {
      list-style: none;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

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

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

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1.4;
      transition: all var(--transition);
      border: 2px solid transparent;
      letter-spacing: 0.02em;
    }

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

    .btn-primary {
      background: var(--secondary);
      color: #fff;
    }

    .btn-primary:hover {
      background: var(--secondary-dark);
      transform: translateY(-1px);
    }

    .btn-primary .arrow {
      transition: transform var(--transition);
    }

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

    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-outline:hover {
      background: rgba(58, 109, 140, 0.08);
    }

    .btn-outline-light {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.85);
      color: #fff;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.14);
    }

    .btn-sm {
      padding: 10px 20px;
      font-size: 14px;
      border-radius: 8px;
    }

    .btn-lg {
      padding: 16px 40px;
      font-size: 16px;
    }

    /* ===== Header ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-top: 4px solid var(--primary);
      height: 72px;
      transition: height var(--transition), box-shadow var(--transition);
    }

    .site-header.scrolled {
      height: 60px;
      box-shadow: 0 4px 20px rgba(23, 34, 46, 0.08);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 9px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-title);
      letter-spacing: 0.01em;
      white-space: nowrap;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 4px;
      background: rgba(23, 34, 46, 0.04);
      border-radius: 999px;
    }

    .nav-tab {
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-body);
      transition: all var(--transition);
      white-space: nowrap;
    }

    .nav-tab:hover {
      background: rgba(58, 109, 140, 0.1);
      color: var(--primary-dark);
    }

    .nav-tab.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
    }

    .header-cta {
      flex-shrink: 0;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: var(--bg);
      padding: 8px 10px;
      align-items: center;
    }

    .nav-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--text-title);
      border-radius: 2px;
      transition: all 0.3s ease;
    }

    .nav-toggle.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.open span:nth-child(2) {
      opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .drawer-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(23, 34, 46, 0.65);
      z-index: 98;
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .drawer-overlay.show {
      display: block;
      opacity: 1;
    }

    /* ===== Mobile Drawer Nav ===== */
    .mobile-drawer {
      display: none;
    }

    @media (max-width: 992px) {
      .main-nav,
      .header-cta {
        display: none;
      }

      .nav-toggle {
        display: flex;
      }

      .mobile-drawer {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 60px;
        right: -320px;
        width: 300px;
        height: 100vh;
        background: var(--white);
        z-index: 99;
        padding: 32px 28px;
        gap: 16px;
        box-shadow: -8px 0 30px rgba(23, 34, 46, 0.12);
        transition: right 0.35s ease;
      }

      .mobile-drawer.open {
        right: 0;
      }

      .mobile-drawer a {
        display: block;
        padding: 12px 16px;
        border-radius: var(--radius-md);
        font-size: 16px;
        font-weight: 500;
        color: var(--text-body);
        background: var(--bg);
        transition: all var(--transition);
      }

      .mobile-drawer a:hover {
        background: var(--primary-light);
        color: var(--primary-dark);
      }

      .mobile-drawer a.active {
        background: var(--primary);
        color: #fff;
      }

      .mobile-drawer .btn {
        margin-top: 12px;
      }
    }

    /* ===== Category Banner (H1 area) ===== */
    .category-banner {
      position: relative;
      padding: 160px 0 80px;
      background-color: var(--primary-dark);
      background-image: url('/assets/images/backpic/back-1.png');
      background-size: cover;
      background-position: center;
      overflow: hidden;
    }

    .category-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(23, 34, 46, 0.85) 0%, rgba(23, 34, 46, 0.55) 55%, rgba(23, 34, 46, 0.3) 100%);
    }

    .category-banner::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 120px;
      background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
    }

    .banner-content {
      position: relative;
      z-index: 2;
      max-width: 680px;
    }

    .banner-tag {
      display: inline-block;
      background: var(--secondary);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 5px 14px;
      border-radius: 999px;
      letter-spacing: 0.04em;
      margin-bottom: 20px;
    }

    .category-banner h1 {
      font-size: 48px;
      font-weight: 700;
      color: #fff;
      line-height: 1.2;
      margin-bottom: 16px;
      letter-spacing: 0;
    }

    .banner-subtitle {
      font-size: 17px;
      color: rgba(255, 255, 255, 0.9);
      line-height: 1.6;
      margin-bottom: 32px;
      max-width: 520px;
    }

    .banner-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    @media (max-width: 768px) {
      .category-banner {
        padding: 120px 0 60px;
      }

      .category-banner h1 {
        font-size: 32px;
      }

      .banner-subtitle {
        font-size: 15px;
      }

      .banner-actions {
        flex-direction: column;
        align-items: flex-start;
      }

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

    /* ===== Section Head ===== */
    .section-head {
      text-align: center;
      max-width: 640px;
      margin: 0 auto 56px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      padding: 5px 16px;
      border-radius: 999px;
      letter-spacing: 0.03em;
      margin-bottom: 14px;
    }

    .section-head h2 {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-title);
      line-height: 1.3;
      letter-spacing: 0;
      margin-bottom: 12px;
    }

    .section-head p {
      font-size: 16px;
      color: var(--text-muted);
    }

    @media (max-width: 768px) {
      .section-head {
        margin-bottom: 40px;
      }

      .section-head h2 {
        font-size: 24px;
      }
    }

    /* ===== Features ===== */
    .features {
      background: var(--white);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--bg);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      border: 1px solid transparent;
      transition: all var(--transition);
    }

    .feature-card:hover {
      background: var(--white);
      border-color: var(--border);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .feature-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 22px;
    }

    .feature-icon svg {
      width: 24px;
      height: 24px;
      stroke: currentColor;
      fill: none;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 10px;
      letter-spacing: 0;
    }

    .feature-card p {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-muted);
    }

    @media (max-width: 992px) {
      .feature-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 576px) {
      .feature-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ===== Live Grid ===== */
    .live-grid-section {
      background: var(--bg);
    }

    .live-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .live-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .live-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .live-card-cover {
      position: relative;
      display: block;
      overflow: hidden;
      aspect-ratio: 16 / 9;
    }

    .live-card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .live-card:hover .live-card-cover img {
      transform: scale(1.04);
    }

    .live-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: var(--secondary);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 999px;
      letter-spacing: 0.02em;
    }

    .live-card-body {
      padding: 22px 24px 24px;
    }

    .live-card-body h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .live-card-body h3 a {
      transition: color var(--transition);
    }

    .live-card-body h3 a:hover {
      color: var(--primary);
    }

    .live-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 16px;
    }

    .live-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 999px;
      letter-spacing: 0.02em;
    }

    .live-time {
      font-size: 12px;
      color: var(--text-disable);
    }

    @media (max-width: 992px) {
      .live-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 576px) {
      .live-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ===== Process Steps ===== */
    .process-section {
      background: var(--white);
      overflow: hidden;
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      position: relative;
    }

    .process-steps::before {
      content: '';
      position: absolute;
      top: 52px;
      left: 12.5%;
      right: 12.5%;
      height: 2px;
      background: linear-gradient(to right, var(--primary-light), var(--primary), var(--primary-light));
      z-index: 0;
    }

    .process-step {
      position: relative;
      z-index: 1;
      text-align: center;
      padding: 0 24px;
    }

    .step-icon {
      width: 104px;
      height: 104px;
      margin: 0 auto 24px;
      border-radius: 50%;
      background: var(--bg);
      border: 2px solid var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      position: relative;
      z-index: 2;
    }

    .process-step:nth-child(1) .step-icon {
      background: var(--primary);
      color: #fff;
    }

    .step-icon svg {
      width: 32px;
      height: 32px;
      stroke: currentColor;
      fill: none;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .step-num {
      display: block;
      font-size: 12px;
      font-weight: 700;
      color: var(--text-disable);
      letter-spacing: 0.08em;
      margin-bottom: 10px;
    }

    .process-step h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 8px;
      letter-spacing: 0;
    }

    .process-step p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    @media (max-width: 992px) {
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 20px;
      }

      .process-steps::before {
        display: none;
      }
    }

    @media (max-width: 576px) {
      .process-steps {
        grid-template-columns: 1fr;
      }
    }

    /* ===== Scenes ===== */
    .scenes-section {
      background: var(--bg);
    }

    .scene-list {
      display: flex;
      flex-direction: column;
      gap: 48px;
    }

    .scene-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border);
      transition: box-shadow var(--transition);
    }

    .scene-row:hover {
      box-shadow: var(--shadow-hover);
    }

    .scene-row.reverse .scene-media {
      order: 2;
    }

    .scene-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      aspect-ratio: 4 / 3;
    }

    .scene-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .scene-text {
      padding: 12px 8px;
    }

    .scene-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--secondary);
      background: rgba(232, 106, 74, 0.1);
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 16px;
    }

    .scene-text h3 {
      font-size: 22px;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 12px;
      letter-spacing: 0;
    }

    .scene-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    @media (max-width: 992px) {
      .scene-row {
        grid-template-columns: 1fr;
        padding: 24px;
      }

      .scene-row.reverse .scene-media {
        order: 0;
      }

      .scene-media {
        aspect-ratio: 16 / 9;
      }
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--white);
    }

    .faq-list {
      max-width: 780px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: var(--white);
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .faq-item:hover {
      border-color: var(--primary);
    }

    .faq-item.open {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 22px 26px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-title);
      text-align: left;
      background: var(--white);
      transition: background var(--transition);
      letter-spacing: 0.01em;
    }

    .faq-question:hover {
      background: var(--bg);
    }

    .faq-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 400;
      transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }

    .faq-answer-inner {
      padding: 0 26px 24px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid transparent;
    }

    .faq-item.open .faq-answer-inner {
      border-top-color: var(--border);
      padding-top: 18px;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--dark);
      position: relative;
      overflow: hidden;
      padding: 96px 0;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -80px;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(58, 109, 140, 0.18);
    }

    .cta-section::after {
      content: '';
      position: absolute;
      bottom: -120px;
      left: 10%;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: rgba(232, 106, 74, 0.08);
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 640px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      font-size: 32px;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: 0;
    }

    .cta-inner p {
      font-size: 16px;
      color: rgba(255, 255, 255, 0.75);
      margin-bottom: 36px;
    }

    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    @media (max-width: 576px) {
      .cta-inner h2 {
        font-size: 26px;
      }

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

    /* ===== Footer ===== */
    .site-footer {
      background: var(--dark);
      color: rgba(242, 246, 250, 0.7);
      padding: 64px 0 0;
      font-size: 14px;
    }

    .site-footer a {
      color: rgba(242, 246, 250, 0.7);
      transition: color 0.25s ease;
    }

    .site-footer a:hover {
      color: #fff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1.2fr;
      gap: 48px;
      padding-bottom: 48px;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }

    .footer-logo .logo-mark {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border-radius: 8px;
    }

    .footer-logo span:last-child {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.01em;
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(242, 246, 250, 0.6);
      max-width: 360px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-col ul li {
      margin-bottom: 10px;
      font-size: 14px;
    }

    .footer-contact li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .footer-contact .ic {
      font-style: normal;
      flex-shrink: 0;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 22px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: rgba(242, 246, 250, 0.45);
    }

    @media (max-width: 992px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }

      .footer-brand {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 576px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    /* ===== Empty state (if needed) ===== */
    .empty-state {
      text-align: center;
      padding: 60px 20px;
      background: var(--bg);
      border-radius: var(--radius-lg);
      border: 1px dashed var(--border);
    }

    .empty-state .empty-icon {
      font-size: 48px;
      margin-bottom: 16px;
    }

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

    /* ===== Focus Visible ===== */
    :focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

/* roulang page: article */
:root {
  --primary: #3A6D8C;
  --primary-dark: #2C5269;
  --primary-light: rgba(58, 109, 140, 0.10);
  --secondary: #E86A4A;
  --secondary-dark: #c7543a;
  --bg-page: #F6F8FA;
  --bg-card: #FFFFFF;
  --bg-dark: #17222E;
  --text-title: #1F2A37;
  --text-body: #3F4B57;
  --text-muted: #74828F;
  --text-light: #F2F6FA;
  --border: #D5DEE6;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-full: 999px;
  --shadow-sm: 0 2px 10px rgba(20, 35, 55, 0.05);
  --shadow-md: 0 8px 30px rgba(23, 34, 46, 0.12);
  --transition: all 0.25s ease;
  --container-width: 1200px;
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-body);
  line-height: 1.7;
  letter-spacing: 0.01em;
  padding-top: 72px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  line-height: 1.4;
  letter-spacing: 0.02em;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--secondary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--secondary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232, 106, 74, 0.3);
}
.btn-primary .arrow {
  transition: transform 0.25s ease;
}
.btn-primary:hover .arrow {
  transform: translateX(4px);
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--text-light);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-block { width: 100%; }

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.tag-hot {
  background: rgba(232, 106, 74, 0.12);
  color: var(--secondary);
}

/* ===== Header / 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(213, 222, 230, 0.7);
  transition: all 0.3s ease;
}
.site-headertop {
  border-top: 4px solid var(--primary);
}
.site-header.scrolled {
  box-shadow: 0 4px 24px rgba(23, 34, 46, 0.08);
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
  transition: min-height 0.3s ease;
}
.site-header.scrolled .nav-wrapper {
  min-height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}
.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  border-radius: var(--radius-full);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-tab:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.nav-tab.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 6px;
  background: transparent;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  right: 0;
  width: 280px;
  background: #fff;
  border-radius: 0 0 0 16px;
  box-shadow: var(--shadow-md);
  padding: 24px;
  z-index: 99;
  flex-direction: column;
  gap: 6px;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu .nav-tab {
  border-radius: 8px;
}
.mobile-menu .btn {
  margin-top: 12px;
}
.menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 97;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ===== 面包屑 ===== */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-bar a {
  color: var(--text-muted);
  transition: var(--transition);
}
.breadcrumb-bar a:hover {
  color: var(--primary);
}
.breadcrumb-bar .sep {
  color: var(--text-muted);
  opacity: 0.5;
}
.breadcrumb-bar .current {
  color: var(--text-body);
  font-weight: 500;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 文章区 ===== */
.article-section {
  padding: 56px 0 72px;
}
.article-container {
  max-width: 800px;
  margin: 0 auto;
}
.article-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 48px 56px;
  border: 1px solid rgba(213, 222, 230, 0.6);
}
.article-header {
  margin-bottom: 36px;
}
.article-cat {
  margin-bottom: 16px;
}
.article-header h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.25;
  letter-spacing: 0;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 13px;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-summary {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  background: var(--bg-page);
  border-left: 3px solid var(--primary);
  padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 20px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.article-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0 32px;
}

/* 正文排版 */
.article-body {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
}
.article-body p {
  margin-bottom: 22px;
  text-align: justify;
}
.article-body h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-title);
  margin: 36px 0 16px;
  letter-spacing: 0;
}
.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-title);
  margin: 28px 0 12px;
  letter-spacing: 0;
}
.article-body ul,
.article-body ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-body ul {
  list-style: disc;
}
.article-body ol {
  list-style: decimal;
}
.article-body li {
  margin-bottom: 10px;
  line-height: 1.7;
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 16px 22px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-body);
  font-style: normal;
}
.article-body img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 28px 0;
  object-fit: cover;
  aspect-ratio: 16/9;
  background: #E3E9EF;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-body a:hover {
  color: var(--primary-dark);
}
.article-body strong {
  font-weight: 600;
  color: var(--text-title);
}
.article-body .note {
  background: var(--bg-page);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-muted);
  margin: 20px 0;
}

/* ===== 未找到 ===== */
.not-found {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 80px 48px;
  text-align: center;
  border: 1px solid rgba(213, 222, 230, 0.6);
}
.not-found .nf-icon {
  font-size: 56px;
  margin-bottom: 20px;
  opacity: 0.5;
}
.not-found h1 {
  font-size: 28px;
  color: var(--text-title);
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 15px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 72px 0;
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 16px;
  flex-wrap: wrap;
}
.section-header h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--text-title);
  letter-spacing: 0;
}
.section-header .section-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}
.section-header .section-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--bg-page);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(213, 222, 230, 0.5);
  transition: var(--transition);
  display: block;
}
.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: transparent;
}
.related-card .card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #E3E9EF;
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .card-img img {
  transform: scale(1.04);
}
.related-card .card-img .tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}
.related-card .card-body {
  padding: 20px 22px 24px;
}
.related-card .card-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}
.related-card:hover .card-body h3 {
  color: var(--primary);
}
.related-card .card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-more {
  text-align: center;
  margin-top: 40px;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: var(--bg-page);
  transition: var(--transition);
}
.back-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

/* ===== CTA 区 ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(rgba(23, 34, 46, 0.92), rgba(23, 34, 46, 0.96)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: var(--text-light);
}
.cta-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}
.cta-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.cta-guide h2 {
  font-size: 30px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0;
}
.cta-guide p {
  font-size: 15px;
  color: rgba(242, 246, 250, 0.8);
  margin-bottom: 28px;
  max-width: 420px;
  line-height: 1.7;
}
.cta-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.cta-visual {
  display: flex;
  gap: 24px;
  justify-content: flex-end;
  align-items: center;
}
.cta-qr {
  text-align: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 20px;
  width: 140px;
}
.qr-placeholder {
  width: 96px;
  height: 96px;
  margin: 0 auto 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  border: 1px dashed rgba(255, 255, 255, 0.2);
}
.cta-qr span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}
.cta-poster {
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 180px;
  aspect-ratio: 2/3;
  background: var(--primary-dark);
}
.cta-poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(242, 246, 250, 0.7);
  padding: 64px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-mark {
  background: var(--primary);
}
.footer-brand .footer-logo span:last-child {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0;
}
.footer-brand p {
  color: rgba(242, 246, 250, 0.6);
  line-height: 1.7;
  font-size: 13px;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: rgba(242, 246, 250, 0.65);
  font-size: 14px;
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(242, 246, 250, 0.6);
  font-size: 13px;
}
.footer-contact .ic {
  font-size: 14px;
  opacity: 0.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: rgba(242, 246, 250, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .cta-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-visual {
    justify-content: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .nav-actions .btn {
    display: none;
  }
  .mobile-menu {
    display: flex;
    top: 72px;
  }
  .article-card {
    padding: 32px 24px;
  }
  .article-header h1 {
    font-size: 26px;
  }
  .article-section {
    padding: 40px 0 56px;
  }
  .related-section {
    padding: 56px 0;
  }
  .cta-section {
    padding: 64px 0;
  }
  .cta-guide h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-brand p {
    max-width: 100%;
  }
}
@media (max-width: 576px) {
  .container {
    padding: 0 16px;
  }
  .breadcrumb-bar .current {
    max-width: 180px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .cta-visual {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-poster {
    width: 140px;
  }
  .article-card {
    padding: 24px 18px;
  }
  .article-header h1 {
    font-size: 22px;
  }
  .article-body {
    font-size: 15px;
  }
  .article-body h3 {
    font-size: 19px;
  }
  .article-summary {
    font-size: 14px;
  }
  .not-found {
    padding: 48px 24px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #3A6D8C;
  --primary-dark: #2C5269;
  --accent: #E86A4A;
  --accent-dark: #c94e2e;
  --bg: #F6F8FA;
  --white: #FFFFFF;
  --dark: #17222E;
  --dark-soft: #1E2C3B;
  --title-color: #1F2A37;
  --text-color: #3F4B57;
  --text-muted: #74828F;
  --text-disabled: #A8B3BF;
  --border: #D5DEE6;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-full: 999px;
  --shadow-hover: 0 8px 30px rgba(23, 34, 46, 0.12);
  --shadow-nav: 0 2px 12px rgba(23, 34, 46, 0.08);
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
  --transition: 0.25s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text-color);
  line-height: 1.75;
  letter-spacing: 0.015em;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 4px solid var(--primary);
  box-shadow: var(--shadow-nav);
  transition: box-shadow .3s ease;
}

.site-header .container {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--title-color);
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  transition: background .25s, color .25s;
  white-space: nowrap;
}

.nav-tab:hover {
  background: rgba(58, 109, 140, 0.08);
  color: var(--primary-dark);
}

.nav-tab.active {
  background: var(--primary);
  color: #fff;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  margin-left: 10px;
  transition: background .25s, transform .2s;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.nav-cta i {
  font-style: normal;
  transition: transform .25s;
}

.nav-cta:hover i {
  transform: translateX(3px);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 10px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  margin-left: auto;
  background: #fff;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(23, 34, 46, 0.72);
  z-index: 99;
  padding-top: 76px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-inner {
  background: #fff;
  margin: 0 16px;
  border-radius: 16px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-menu-inner .nav-tab {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 15px;
  justify-content: center;
}

.mobile-menu-inner .nav-cta {
  justify-content: center;
  margin-left: 0;
  margin-top: 8px;
}

/* ========== 页面横幅 ========== */
.page-hero {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #2C5269 0%, #3A6D8C 100%);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(23, 34, 46, 0.82) 0%, rgba(23, 34, 46, 0.55) 60%, rgba(23, 34, 46, 0.2) 100%);
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-crumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.page-crumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: color .25s;
}

.page-crumb a:hover {
  color: #fff;
}

.page-crumb .sep {
  color: rgba(255, 255, 255, 0.4);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: 0;
  margin-bottom: 14px;
}

.page-hero .hero-sub {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 30px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .25s, transform .2s, box-shadow .25s, border-color .25s;
  text-align: center;
}

.btn:focus-visible, .nav-tab:focus-visible, .nav-cta:focus-visible, .chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232, 106, 74, 0.3);
}

.btn-primary i {
  font-style: normal;
  transition: transform .25s;
}

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

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* ========== 板块通用 ========== */
.section {
  padding: 86px 0;
}

.section-alt {
  background: #fff;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 42px;
  gap: 16px;
  flex-wrap: wrap;
}

.section-head-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--title-color);
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: color .25s;
}

.section-link:hover {
  color: var(--accent);
}

.section-link i {
  font-style: normal;
  transition: transform .25s;
}

.section-link:hover i {
  transform: translateX(3px);
}

/* ========== 精选内容区（2列错位网格） ========== */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.feature-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(213, 222, 230, 0.6);
  transition: box-shadow .3s, transform .3s;
}

.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.feature-card.lg {
  grid-column: span 1;
}

.feature-card.offset-right {
  margin-top: 64px;
}

.feature-card.offset-left {
  margin-top: -24px;
}

.feature-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #E3E9EF;
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

.feature-card:hover .feature-media img {
  transform: scale(1.03);
}

.media-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  z-index: 2;
}

.feature-body {
  padding: 24px 26px 28px;
}

.feature-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.feature-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-disabled);
}

.feature-meta .tag {
  background: rgba(58, 109, 140, 0.08);
  color: var(--primary-dark);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--title-color);
  margin-bottom: 10px;
  line-height: 1.5;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.feature-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.feature-foot .date {
  font-size: 13px;
  color: var(--text-disabled);
}

.feature-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: color .25s;
}

.feature-link:hover {
  color: var(--accent);
}

/* ========== 浏览维度 ========== */
.dimension-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.dimension-item {
  flex: 1 1 180px;
  min-width: 160px;
  background: #fff;
  border: 1px solid rgba(213, 222, 230, 0.6);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: box-shadow .3s, transform .3s, border-color .3s;
  cursor: pointer;
}

.dimension-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.dimension-item .d-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: rgba(58, 109, 140, 0.08);
  border-radius: 16px;
  margin-bottom: 18px;
  font-size: 24px;
}

.dimension-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--title-color);
  margin-bottom: 6px;
}

.dimension-item p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ========== 专题片单 ========== */
.playlist-section {
  background: var(--dark);
  padding: 86px 0;
}

.playlist-section .section-title,
.playlist-section .section-desc {
  color: #fff;
}

.playlist-section .section-desc {
  color: rgba(255, 255, 255, 0.6);
}

.playlist-section .section-link {
  color: rgba(255, 255, 255, 0.8);
}

.playlist-section .section-link:hover {
  color: var(--accent);
}

.playlist-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.playlist-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  transition: background .3s, transform .3s, border-color .3s;
}

.playlist-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
}

.playlist-card .p-tag {
  display: inline-flex;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(232, 106, 74, 0.12);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
}

.playlist-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.5;
}

.playlist-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.7;
  margin-bottom: 22px;
}

.playlist-card .p-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.playlist-card .p-footer a {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  transition: color .25s;
  margin-left: auto;
}

.playlist-card .p-footer a:hover {
  color: var(--accent);
}

/* ========== 数据指标 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-item {
  background: #fff;
  border: 1px solid rgba(213, 222, 230, 0.6);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  text-align: center;
  transition: box-shadow .3s, transform .3s;
}

.stat-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.stat-num {
  font-size: 38px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: 0;
  margin-bottom: 8px;
}

.stat-num span {
  font-size: 18px;
  font-weight: 600;
  margin-left: 2px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

/* ========== 更新流程 ========== */
.steps {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 20px;
  counter-reset: step;
}

.step-item {
  flex: 1 1 220px;
  position: relative;
  background: var(--bg);
  border: 1px solid rgba(213, 222, 230, 0.6);
  border-radius: var(--radius-lg);
  padding: 34px 26px 28px;
  transition: box-shadow .3s, transform .3s, border-color .3s;
}

.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  border-radius: 14px;
  margin-bottom: 20px;
  letter-spacing: 0;
}

.step-item h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--title-color);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========== FAQ ========== */
.faq-list {
  display: grid;
  gap: 14px;
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid rgba(213, 222, 230, 0.6);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .25s, border-color .25s;
}

.faq-item:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(23, 34, 46, 0.06);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--title-color);
  cursor: pointer;
  transition: background .25s;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 26px;
  font-weight: 400;
  color: var(--primary);
  line-height: 1;
  transition: transform .3s, color .3s;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-item[open] summary {
  background: rgba(58, 109, 140, 0.03);
}

.faq-body {
  padding: 0 26px 22px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
}

.faq-body p + p {
  margin-top: 8px;
}

/* ========== CTA ========== */
.cta-block {
  position: relative;
  background: var(--dark);
  border-radius: 20px;
  padding: 76px 56px;
  overflow: hidden;
}

.cta-block::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(58, 109, 140, 0.2);
}

.cta-block::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: 30%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(232, 106, 74, 0.1);
}

.cta-wrap {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-left {
  flex: 1 1 380px;
}

.cta-left h3 {
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}

.cta-left p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  margin-bottom: 28px;
}

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

.cta-right {
  flex: 1 1 300px;
  display: flex;
  justify-content: center;
}

.cta-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 240px;
  text-align: center;
}

.cta-card .qr-placeholder {
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.cta-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 6px;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.65);
  padding-top: 70px;
  padding-bottom: 0;
  margin-top: 86px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 46px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand .logo-mark {
  background: var(--accent);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  max-width: 360px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color .25s;
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

.footer-contact .ic {
  font-style: normal;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .feature-grid {
    gap: 28px;
  }

  .playlist-grid {
    gap: 20px;
  }

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

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

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .site-header .container {
    height: 64px;
  }

  .logo-text {
    font-size: 18px;
  }

  .page-hero {
    min-height: 320px;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .page-hero .hero-sub {
    font-size: 16px;
  }

  .btn {
    padding: 12px 26px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .feature-card.offset-right,
  .feature-card.offset-left {
    margin-top: 0;
  }

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

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

  .cta-block {
    padding: 48px 28px;
    border-radius: 14px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .page-hero h1 {
    font-size: 28px;
  }

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

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-item {
    padding: 22px 16px;
  }

  .stat-num {
    font-size: 28px;
  }

  .steps {
    flex-direction: column;
  }

  .footer-bottom {
    flex-wrap: wrap;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }
}

/* 图片加载失败兜底 */
img {
  background: #E3E9EF;
}

/* 媒体查询：576px 以下导航抽屉不溢出 */
@media (max-width: 576px) {
  .mobile-menu-inner {
    margin: 0 12px;
  }

  .feature-meta {
    flex-wrap: wrap;
  }
}