/* roulang page: index */
:root {
  --color-ink: #0B0C0E;
  --color-ink-2: #15171B;
  --color-paper: #F6F2EB;
  --color-paper-2: #ECE5DB;
  --color-brand: #B3122C;
  --color-brand-hover: #D12A3D;
  --color-champagne: #A07A42;
  --color-text: #17181B;
  --color-text-2: #62676D;
  --color-text-invert: #F3EFE9;
  --color-text-invert-2: #9BA0A8;
  --color-line: rgba(0,0,0,0.08);
  --color-line-dark: rgba(255,255,255,0.12);
  --r-lg: 20px;
  --r-md: 12px;
  --r-sm: 6px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.03), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.04), 0 20px 44px rgba(0,0,0,0.12);
  --shadow-pop: 0 20px 60px rgba(0,0,0,0.5);
  --container: 1280px;
  --space-section: clamp(64px, 8vw, 112px);
  --font-sans: "PingFang SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num: "DIN Alternate","Bahnschrift",Arial,sans-serif;
  --ease: cubic-bezier(0.2,0,0,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease), box-shadow .25s var(--ease), transform .25s var(--ease); }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { font-weight: 900; line-height: 1.25; letter-spacing: .01em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  min-height: 48px;
  letter-spacing: .02em;
  transition: all .28s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-brand);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(179, 18, 44, .35);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(179, 18, 44, .4);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(0,0,0,0.15);
  color: var(--color-text);
}
.btn-outline:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  transform: translateY(-1px);
}
.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.4);
  color: var(--color-text-invert);
}
.btn-outline-light:hover {
  background: #fff;
  color: var(--color-ink);
  border-color: #fff;
  transform: translateY(-1px);
}
.btn-light {
  background: #fff;
  color: var(--color-ink);
}
.btn-light:hover {
  background: var(--color-paper);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
}
.btn-sm {
  padding: 8px 18px;
  min-height: 40px;
  font-size: 14px;
  border-radius: 8px;
}

/* Badges & Tags */
.badge {
  display: inline-block;
  background: var(--color-brand);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: .06em;
  line-height: 1.5;
}
.badge-light {
  background: #fff;
  color: var(--color-brand);
}
.chip {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,0.15);
  font-size: 13px;
  color: var(--color-text-2);
  transition: all .25s var(--ease);
  line-height: 1.4;
}
.chip:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  transform: translateY(-2px);
}
.chip-dark {
  border-color: var(--color-line-dark);
  color: var(--color-text-invert-2);
}
.chip-dark:hover {
  border-color: var(--color-brand);
  color: #fff;
}

/* Section Head */
.section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(28px, 3vw, 34px);
  font-weight: 900;
  letter-spacing: .01em;
}
.section-bar {
  width: 4px;
  height: 24px;
  background: var(--color-brand);
  border-radius: 2px;
  display: inline-block;
  flex-shrink: 0;
}
.section-head-dark h2 { color: var(--color-text-invert); }
.section-head-dark .scroll-hint { color: var(--color-text-invert-2); font-size: 13px; margin-left: auto; display: flex; align-items: center; gap: 6px; }
.section-more {
  margin-left: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.section-more:hover .arrow { transform: translateX(3px); }
.section-more .arrow { transition: transform .25s var(--ease); }

/* More link */
.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
}
.more-link:hover .arrow { transform: translateX(3px); }
.more-link .arrow { transition: transform .25s var(--ease); }

/* ============ HEADER ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(10, 11, 13, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(10, 11, 13, 0.97);
  box-shadow: 0 1px 0 var(--color-line-dark);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-brand) 50%, #0B0C0E 50%);
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-line1 {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}
.brand-line2 {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--color-text-invert-2);
  margin-top: 2px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255,255,255,0.92);
  border-radius: 6px;
  transition: color .25s var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--color-brand);
  transition: width .25s var(--ease);
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after { width: 20px; }
.nav-link.active { color: var(--color-brand); }
.nav-link.active::after { width: 20px; }
.nav-mega-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.35);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: transparent;
  transition: all .25s var(--ease);
  flex-shrink: 0;
}
.nav-mega-trigger:hover {
  background: #fff;
  color: var(--color-ink);
  border-color: #fff;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.nav-toggle:hover { background: rgba(255,255,255,0.08); }
.nav-toggle svg { width: 22px; height: 22px; }

/* Mega Panel */
.mega-panel {
  position: absolute;
  top: 72px;
  right: clamp(16px, 4vw, 48px);
  width: min(1080px, calc(100% - 32px));
  background: var(--color-ink);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-pop);
  border: 1px solid var(--color-line-dark);
  padding: 32px 36px 36px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
  z-index: 99;
}
.mega-panel.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.1fr;
  gap: 36px;
}
.mega-col-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-invert-2);
  text-transform: none;
  letter-spacing: .1em;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line-dark);
}
.mega-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.mega-tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-line-dark);
  font-size: 13px;
  color: var(--color-text-invert-2);
  transition: all .25s var(--ease);
}
.mega-tag:hover {
  border-color: var(--color-brand);
  color: #fff;
  transform: translateY(-2px);
}
.mega-news-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.mega-news-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px;
  border-radius: 12px;
  transition: background .25s var(--ease);
}
.mega-news-item:hover { background: rgba(255,255,255,0.04); }
.mega-thumb {
  width: 80px;
  height: 52px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}
.mega-news-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.mega-news-time {
  font-size: 12px;
  color: var(--color-text-invert-2);
  margin-top: 4px;
  display: block;
}
.mega-cta-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  background: linear-gradient(180deg, rgba(11,12,14,0.1) 0%, rgba(11,12,14,0.75) 100%);
}
.mega-cta-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; }
.mega-cta-text { font-size: 16px; font-weight: 800; color: #fff; margin-bottom: 6px; }
.mega-cta-desc { font-size: 13px; color: rgba(255,255,255,0.75); margin-bottom: 12px; }
.mega-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--color-brand);
  color: #fff;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  width: fit-content;
  transition: background .25s var(--ease);
}
.mega-cta-btn:hover { background: var(--color-brand-hover); }

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 90vw);
  height: 100vh;
  background: var(--color-ink);
  z-index: 200;
  padding: 24px;
  transform: translateX(100%);
  transition: transform .35s var(--ease);
  overflow-y: auto;
  border-left: 1px solid var(--color-line-dark);
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-line-dark);
}
.drawer-close {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.drawer-close:hover { background: rgba(255,255,255,0.08); }
.drawer-nav { display: flex; flex-direction: column; gap: 4px; }
.drawer-link {
  display: block;
  padding: 14px 12px;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-invert);
  border-radius: 10px;
  border: 1px solid transparent;
}
.drawer-link:hover { background: rgba(255,255,255,0.04); border-color: var(--color-line-dark); }
.drawer-link.active { color: var(--color-brand); background: rgba(179,18,44,0.1); }
.drawer-mega {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line-dark);
}
.drawer-mega-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-invert-2);
  letter-spacing: .1em;
  margin-bottom: 16px;
}
.drawer-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 150;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s var(--ease), visibility .3s;
}
.drawer-overlay.show { opacity: 1; visibility: visible; }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  background: linear-gradient(90deg, rgba(10,11,13,0.92) 0%, rgba(10,11,13,0.68) 40%, rgba(10,11,13,0.15) 75%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  background-color: var(--color-ink);
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 140px;
  background: linear-gradient(to top, rgba(11,12,14,0.9), transparent);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 120px clamp(16px, 4vw, 48px) 96px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(179,18,44,0.7);
  background: rgba(179,18,44,0.15);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: #f4c6cd;
  margin-bottom: 24px;
}
.hero-badge svg { width: 14px; height: 14px; }
.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: .01em;
  color: #fff;
  max-width: 680px;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: rgba(255,255,255,0.78);
  max-width: 620px;
  margin-bottom: 36px;
  letter-spacing: .02em;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.62);
  letter-spacing: .04em;
}
.hero-meta span { display: inline-flex; align-items: center; }
.hero-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: rgba(255,255,255,0.4); display: inline-block; margin: 0 4px; }
.scroll-line {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.6));
  animation: scrollPulse 2.5s ease-in-out infinite;
  z-index: 3;
}
@keyframes scrollPulse {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.3; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 1; }
}

/* ============ GALLERY STRIP ============ */
.gallery-strip {
  background: var(--color-ink);
  padding: var(--space-section) 0 80px;
  overflow: hidden;
}
.gallery-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0 clamp(16px, 4vw, 48px) 20px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.gallery-track::-webkit-scrollbar { display: none; }
.gallery-card {
  width: 280px;
  flex-shrink: 0;
  scroll-snap-align: start;
  background: var(--color-ink-2);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--color-line-dark);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.gallery-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.gallery-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.gallery-card:hover .gallery-cover img { transform: scale(1.04); }
.gallery-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,12,14,0.7), transparent 60%);
}
.gallery-time {
  position: absolute;
  bottom: 10px;
  right: 12px;
  background: rgba(10,11,13,0.6);
  color: #fff;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  z-index: 2;
  backdrop-filter: blur(4px);
  line-height: 1.4;
}
.gallery-body { padding: 18px 18px 20px; }
.gallery-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-invert);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .25s var(--ease);
}
.gallery-card:hover .gallery-body h3 { color: var(--color-brand-hover); }
.gallery-cat {
  font-size: 12px;
  color: var(--color-text-invert-2);
  letter-spacing: .06em;
}

/* ============ FEATURED ============ */
.featured {
  background: var(--color-paper);
  padding: var(--space-section) 0;
}
.featured-grid {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 24px;
}
.featured-main {
  position: relative;
  display: block;
  border-radius: var(--r-lg);
  overflow: hidden;
  min-height: clamp(280px, 32vw, 420px);
  background: var(--color-ink-2);
  box-shadow: var(--shadow-card);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.featured-main:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.featured-main-cover { position: absolute; inset: 0; }
.featured-main-cover img { width: 100%; height: 100%; object-fit: cover; }
.featured-main-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,12,14,0.72), rgba(11,12,14,0.1) 70%);
}
.featured-main-body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  min-height: clamp(280px, 32vw, 420px);
  padding: 36px;
}
.featured-main-body .badge { margin-bottom: 14px; }
.featured-main-body h3 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  max-width: 90%;
  line-height: 1.3;
}
.featured-main-body p {
  font-size: 14px;
  color: rgba(255,255,255,0.78);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 85%;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-brand);
  transition: gap .25s var(--ease);
}
.read-more:hover { gap: 10px; color: var(--color-brand-hover); }
.featured-side {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}
.featured-side-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  border: 1px solid rgba(255,255,255,0.8);
}
.featured-side-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.featured-side-thumb {
  width: 100%;
  aspect-ratio: 16 / 8;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 14px;
}
.featured-side-thumb img { width: 100%; height: 100%; object-fit: cover; }
.featured-side-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.45;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .25s var(--ease);
}
.featured-side-card:hover .featured-side-title { color: var(--color-brand); }
.featured-side-time {
  font-size: 13px;
  color: var(--color-text-2);
}

/* ============ CHANNELS ============ */
.channels {
  background: var(--color-paper);
  padding: 0 0 var(--space-section);
}
.channel-row {
  display: grid;
  grid-template-columns: 3fr 9fr;
  gap: 24px;
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
}
.channel-row:first-child { border-top: none; padding-top: 0; }
.channel-head {
  padding-right: 24px;
}
.channel-num {
  display: block;
  font-family: var(--font-num);
  font-size: 48px;
  font-weight: 900;
  color: var(--color-brand);
  line-height: 1;
  margin-bottom: 14px;
  font-feature-settings: "tnum";
}
.channel-head h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 10px;
}
.channel-head p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.6;
  margin-bottom: 16px;
}
.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
}
.channel-link:hover .arrow { transform: translateX(3px); }
.channel-link .arrow { transition: transform .25s var(--ease); }
.channel-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.channel-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.8);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.channel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.channel-card-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.channel-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.channel-card:hover .channel-card-cover img { transform: scale(1.04); }
.channel-card-body { padding: 16px 18px 20px; }
.channel-card-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
  transition: color .25s var(--ease);
}
.channel-card:hover .channel-card-body h4 { color: var(--color-brand); }
.channel-card-body p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============ LATEST NEWS ============ */
.latest-news {
  background: var(--color-paper-2);
  padding: var(--space-section) 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.news-grid {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 48px;
}
.news-main-list {
  display: flex;
  flex-direction: column;
}
.news-item {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
}
.news-item:first-child { padding-top: 0; }
.news-item:last-child { border-bottom: none; }
.news-thumb {
  width: 96px;
  height: 72px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; min-width: 0; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.news-time { font-size: 13px; color: var(--color-text-2); }
.news-content h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .25s var(--ease);
}
.news-content h3 a:hover { color: var(--color-brand); }
.news-content .news-summary {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 220px;
  border: 1px dashed rgba(0,0,0,0.2);
  border-radius: 20px;
  color: var(--color-text-2);
  font-size: 14px;
  flex-direction: column;
}
.news-empty svg { width: 32px; height: 32px; opacity: 0.4; }
.news-side { display: flex; flex-direction: column; gap: 24px; }
.side-panel {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.8);
}
.side-panel h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--color-text);
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
  letter-spacing: .03em;
}
.popular-list { display: flex; flex-direction: column; }
.popular-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-line);
  transition: color .25s var(--ease);
}
.popular-item:last-child { border-bottom: none; }
.popular-num {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 800;
  color: var(--color-brand);
  opacity: 0.75;
  font-feature-settings: "tnum";
  width: 24px;
  flex-shrink: 0;
}
.popular-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .25s var(--ease);
}
.popular-item:hover .popular-title { color: var(--color-brand); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.follow-card {
  background: var(--color-ink);
  border-radius: 16px;
  padding: 28px 24px;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.follow-card h4 {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  border: none;
  padding: 0;
  margin: 0;
}
.follow-card p {
  font-size: 13px;
  color: var(--color-text-invert-2);
  line-height: 1.6;
}
.follow-card .btn { margin-top: 8px; width: fit-content; }

/* ============ CLUB STATS ============ */
.club-stats {
  background: var(--color-ink);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.club-stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(179,18,44,0.18), transparent 60%);
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.stat-item { padding: 20px 0; }
.stat-num {
  font-family: var(--font-num);
  font-size: clamp(44px, 5vw, 60px);
  font-weight: 900;
  color: var(--color-brand);
  line-height: 1;
  display: block;
  margin-bottom: 12px;
  font-feature-settings: "tnum";
}
.stat-label {
  font-size: 14px;
  color: var(--color-text-invert-2);
  letter-spacing: .08em;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  padding: 96px 0;
  background: radial-gradient(circle at center, rgba(179,18,44,0.35), rgba(10,11,13,0.85)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  background-color: var(--color-ink);
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  margin-bottom: 16px;
  line-height: 1.25;
}
.cta-inner p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============ FAQ ============ */
.faq-section {
  background: var(--color-paper);
  padding: var(--space-section) 0;
}
.faq-list { max-width: 860px; }
.faq-item {
  border-bottom: 1px solid var(--color-line);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  transition: color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--color-brand); }
.faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
}
.faq-icon svg { width: 14px; height: 14px; stroke: var(--color-text); transition: stroke .3s var(--ease); }
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: var(--color-brand);
  border-color: var(--color-brand);
}
.faq-item[open] summary .faq-icon svg { stroke: #fff; }
.faq-answer {
  padding: 0 0 22px 0;
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.8;
  max-width: 98%;
}
.faq-answer a { color: var(--color-brand); }
.faq-answer a:hover { text-decoration: underline; }

/* ============ FOOTER ============ */
.site-footer {
  background: var(--color-ink);
  color: var(--color-text-invert-2);
  padding: 64px 0 0;
  border-top: 1px solid var(--color-line-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand { display: flex; flex-direction: column; gap: 16px; }
.footer-brand .brand { gap: 12px; }
.footer-desc {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-invert-2);
  max-width: 280px;
}
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--color-line-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-invert-2);
  transition: all .25s var(--ease);
}
.footer-social a:hover { border-color: var(--color-brand); color: #fff; transform: translateY(-2px); }
.footer-social svg { width: 16px; height: 16px; }
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: .05em;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 14px;
  color: var(--color-text-invert-2);
  transition: color .25s var(--ease), padding-left .25s var(--ease);
}
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-invert-2);
  line-height: 1.6;
}
.footer-contact-item svg { width: 16px; height: 16px; flex-shrink: 0; opacity: .7; }
.footer-bottom {
  border-top: 1px solid var(--color-line-dark);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: var(--color-text-invert-2);
  letter-spacing: .04em;
}
.footer-bottom a { color: var(--color-text-invert-2); }
.footer-bottom a:hover { color: #fff; }

/* ============ ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1199px) {
  .channel-row { grid-template-columns: 1fr; gap: 32px; }
  .channel-head { padding-right: 0; }
  .channel-num { font-size: 36px; }
  .mega-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .mega-cta-card { grid-column: span 2; min-height: 140px; }
}

@media (max-width: 991px) {
  .site-header { height: 64px; }
  .header-inner { height: 64px; gap: 16px; }
  .main-nav, .nav-mega-trigger { display: none; }
  .nav-toggle { display: flex; }
  .mega-panel { display: none; }
  .nav-link { display: none; }
  .hero { min-height: 80vh; }
  .hero-inner { padding-top: 100px; padding-bottom: 80px; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-main, .featured-main-body { min-height: 320px; }
  .featured-side { grid-template-rows: none; grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; gap: 40px; }
  .news-side { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .follow-card { grid-column: span 2; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .channel-cards { grid-template-columns: repeat(2, 1fr); }
  .gallery-card { width: 240px; }
}

@media (max-width: 767px) {
  .hero h1 { font-size: 38px; }
  .hero-sub { font-size: 16px; }
  .hero-cta { flex-direction: column; width: 100%; }
  .hero-cta .btn { width: 100%; }
  .hero-meta { flex-wrap: wrap; }
  .section-head { margin-bottom: 28px; }
  .featured-main-body { padding: 24px; }
  .featured-main, .featured-main-body { min-height: 280px; }
  .featured-side { grid-template-columns: 1fr; }
  .channel-cards { grid-template-columns: 1fr; }
  .news-side { grid-template-columns: 1fr; }
  .follow-card { grid-column: auto; }
  .news-item { gap: 14px; }
  .news-thumb { width: 80px; height: 60px; }
  .news-content h3 { font-size: 16px; }
  .news-content .news-summary { -webkit-line-clamp: 1; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .cta-section { padding: 72px 0; }
  .faq-item summary { font-size: 15px; }
  .mega-grid { grid-template-columns: 1fr; }
  .mega-cta-card { grid-column: auto; }
  .gallery-card { width: 220px; }
}

@media (max-width: 519px) {
  .brand-line1 { font-size: 16px; }
  .brand-mark { width: 38px; height: 38px; font-size: 10px; }
  .hero h1 { font-size: 32px; }
  .hero-inner { padding-left: 20px; padding-right: 20px; }
  .btn { width: 100%; }
  .section-more { margin-left: 0; }
  .channel-num { font-size: 30px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-num { font-size: 38px; }
  .footer-grid { grid-template-columns: 1fr; }
  .gallery-track { padding-left: 20px; padding-right: 20px; }
}

/* roulang page: category1 */
:root{
  --color-ink:#0B0C0E;
  --color-ink-2:#15171B;
  --color-paper:#F6F2EB;
  --color-paper-2:#EEE8E0;
  --color-brand:#B3122C;
  --color-brand-hover:#D12A3D;
  --color-champagne:#A07A42;
  --color-text:#17181B;
  --color-text-2:#62676D;
  --color-text-invert:#F3EFE9;
  --color-text-invert-2:#9BA0A8;
  --color-line:rgba(0,0,0,0.08);
  --color-line-dark:rgba(255,255,255,0.12);
  --r-lg:20px;
  --r-md:12px;
  --r-sm:6px;
  --shadow-card:0 1px 2px rgba(0,0,0,0.03),0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover:0 4px 8px rgba(0,0,0,0.04),0 20px 44px rgba(0,0,0,0.12);
  --shadow-pop:0 20px 60px rgba(0,0,0,0.5);
  --container:1280px;
  --space-section:clamp(64px,8vw,112px);
  --ease:cubic-bezier(0.2,0,0,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  background:var(--color-paper);
  color:var(--color-text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:clamp(16px,4vw,48px);padding-right:clamp(16px,4vw,48px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 32px;border-radius:8px;
  transition:all .25s var(--ease);min-height:44px;white-space:nowrap;
}
.btn-light{background:var(--color-paper);color:var(--color-ink);border:1px solid transparent}
.btn-light:hover{background:var(--color-text-invert);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:var(--color-text-invert);border:1px solid rgba(255,255,255,0.4)}
.btn-outline-light:hover{background:var(--color-text-invert);color:var(--color-ink);border-color:var(--color-text-invert);transform:translateY(-1px)}
.btn-primary{background:var(--color-brand);color:#fff;border:1px solid transparent}
.btn-primary:hover{background:var(--color-brand-hover);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--color-paper);outline-offset:2px;box-shadow:0 0 0 4px var(--color-brand)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:999px;font-size:13px;font-weight:500;
  border:1px solid rgba(0,0,0,0.15);color:var(--color-text);
  transition:all .25s var(--ease);
}
.chip:hover{border-color:var(--color-brand);color:var(--color-brand)}
.chip-dark{border-color:var(--color-line-dark);color:var(--color-text-invert-2)}
.chip-dark:hover{border-color:var(--color-brand);color:#fff}
.badge{
  display:inline-flex;align-items:center;gap:4px;
  background:var(--color-brand);color:#fff;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:999px;letter-spacing:0.04em;
}
.section{padding:var(--space-section) 0}
.section-head{margin-bottom:40px}
.section-kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:0.18em;
  color:var(--color-brand);text-transform:uppercase;margin-bottom:8px;
}
.section-head h2{font-size:clamp(26px,4vw,36px);font-weight:900;line-height:1.2;letter-spacing:0.01em}
.section-head p{color:var(--color-text-2);font-size:15px;margin-top:8px;max-width:680px}

/* Header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,11,13,0.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.scrolled{background:rgba(10,11,13,0.97);border-bottom:1px solid var(--color-line-dark)}
.header-inner{display:flex;align-items:center;height:72px;gap:32px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:8px;
  background:linear-gradient(135deg,var(--color-brand) 0 50%,var(--color-ink) 50% 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:13px;letter-spacing:0.02em;position:relative;
  box-shadow:0 0 0 1px rgba(255,255,255,0.15);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-line1{font-size:19px;font-weight:800;color:#fff;letter-spacing:0.01em}
.brand-line2{font-size:11px;letter-spacing:0.18em;color:var(--color-text-invert-2);margin-top:2px}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  font-size:16px;font-weight:600;color:rgba(255,255,255,0.9);
  position:relative;padding:8px 2px;transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:8px;height:2px;border-radius:2px;background:var(--color-brand);
  opacity:0;transition:opacity .25s var(--ease),width .25s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{opacity:1;width:20px}
.nav-link.active{color:#fff}
.nav-link.active::after{opacity:1;width:20px}
.nav-mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--color-text-invert);font-size:14px;font-weight:600;
  border:1px solid rgba(255,255,255,0.25);border-radius:999px;
  padding:10px 18px;transition:all .25s var(--ease);flex-shrink:0;
}
.nav-mega-trigger:hover{border-color:var(--color-brand);color:#fff}
.nav-toggle{display:none;color:#fff;width:44px;height:44px;align-items:center;justify-content:center}
.nav-toggle svg{width:24px;height:24px}

/* Mega Panel */
.mega-panel{
  position:absolute;top:72px;left:0;right:0;background:var(--color-ink);
  border-radius:0 0 20px 20px;box-shadow:var(--shadow-pop);
  padding:32px 0 28px;opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  border-top:1px solid var(--color-line-dark);
}
.mega-panel.open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:48px}
.mega-col-title{
  font-size:12px;font-weight:700;letter-spacing:0.16em;color:var(--color-text-invert-2);
  margin-bottom:20px;text-transform:uppercase;
}
.mega-tags{display:flex;flex-wrap:wrap;gap:10px}
.mega-tag{
  font-size:13px;font-weight:600;color:var(--color-text-invert);
  padding:8px 16px;border-radius:999px;border:1px solid var(--color-line-dark);
  transition:all .25s var(--ease);
}
.mega-tag:hover{border-color:var(--color-brand);color:var(--color-brand)}
.mega-news-list{display:flex;flex-direction:column;gap:6px}
.mega-news-item{
  display:flex;align-items:center;gap:12px;padding:10px;border-radius:12px;
  transition:background .25s var(--ease);
}
.mega-news-item:hover{background:var(--color-ink-2)}
.mega-thumb{width:80px;height:52px;border-radius:8px;object-fit:cover;flex-shrink:0}
.mega-news-text{display:flex;flex-direction:column;gap:2px}
.mega-news-title{font-size:14px;font-weight:600;color:var(--color-text-invert)}
.mega-news-time{font-size:12px;color:var(--color-text-invert-2)}
.mega-cta{
  background:var(--color-ink-2);border-radius:16px;overflow:hidden;
  border:1px solid var(--color-line-dark);
}
.mega-cta-img{height:100px;object-fit:cover;width:100%}
.mega-cta-body{padding:16px}
.mega-cta-title{font-size:15px;font-weight:700;color:var(--color-text-invert);margin-bottom:6px}
.mega-cta-link{font-size:13px;font-weight:600;color:var(--color-brand);display:inline-flex;align-items:center;gap:4px}

/* Mobile nav drawer */
.mobile-drawer{
  display:none;background:var(--color-ink);border-top:1px solid var(--color-line-dark);
  padding:24px 0;
}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.mobile-drawer .nav-link{font-size:18px;padding:12px 0;border-bottom:1px solid var(--color-line-dark)}
.mobile-drawer .nav-link::after{display:none}
.mobile-drawer .drawer-mega .mega-col{margin-bottom:24px}

/* Page Banner */
.page-banner{position:relative;padding:150px 0 64px;background:var(--color-ink);overflow:hidden}
.page-banner .banner-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0.35;
}
.page-banner .banner-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,11,13,0.95) 0%,rgba(10,11,13,0.7) 60%,rgba(10,11,13,0.5) 100%);
}
.banner-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--color-text-invert-2);margin-bottom:18px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:var(--color-text-invert-2)}
.breadcrumb .current{color:var(--color-brand);font-weight:600}
.banner-title{
  font-size:clamp(36px,5vw,46px);font-weight:900;line-height:1.15;color:#fff;
  letter-spacing:0.01em;margin-bottom:14px;
}
.banner-sub{font-size:15px;color:var(--color-text-invert-2);max-width:660px}

/* Intro Section */
.intro-section{}
.intro-text{font-size:16px;line-height:1.9;color:var(--color-text-2);max-width:780px;margin-bottom:40px}
.intro-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.intro-card{
  background:var(--color-paper-2);border-radius:var(--r-lg);
  padding:32px 28px;border:1px solid var(--color-line);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.intro-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.intro-icon{width:44px;height:44px;border-radius:12px;background:var(--color-ink);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.intro-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.intro-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.intro-card p{font-size:14px;color:var(--color-text-2);line-height:1.7}

/* Feature Grid */
.feature-section{background:var(--color-paper-2);border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line)}
.feature-grid{display:grid;gap:24px;margin-bottom:24px}
.feature-grid.grid-a{grid-template-columns:8fr 4fr}
.feature-grid.grid-b{grid-template-columns:4fr 8fr}
.feature-large{
  position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:300px;
  box-shadow:var(--shadow-card);transition:box-shadow .3s var(--ease);
}
.feature-large:hover{box-shadow:var(--shadow-hover)}
.feature-large .card-media{position:absolute;inset:0;height:100%}
.feature-large .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature-large:hover .card-media img{transform:scale(1.04)}
.feature-large .card-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,11,13,0.1) 0%,rgba(10,11,13,0.75) 70%,rgba(10,11,13,0.9) 100%);
}
.feature-large .card-body{position:absolute;left:0;right:0;bottom:0;padding:32px}
.feature-large .card-title{font-size:22px;font-weight:800;color:#fff;line-height:1.4;margin:12px 0 8px}
.feature-large .card-desc{font-size:14px;color:rgba(255,255,255,0.8);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feature-stack{display:flex;flex-direction:column;gap:24px}
.feature-small{
  flex:1;background:var(--color-paper);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.feature-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-small .card-media{position:relative;height:110px}
.feature-small .card-media img{width:100%;height:100%;object-fit:cover}
.feature-small .card-body{padding:16px 18px}
.feature-small .card-title{font-size:16px;font-weight:700;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feature-small .card-meta{font-size:12px;color:var(--color-text-2);margin-top:6px}

/* Process Section */
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:process}
.process-item{
  background:var(--color-paper-2);border-radius:var(--r-lg);padding:32px 28px;
  border:1px solid var(--color-line);position:relative;counter-increment:process;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.process-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.process-item::before{
  content:"0" counter(process);
  font-family:"DIN Alternate","Bahnschrift",Arial,sans-serif;
  font-size:48px;font-weight:900;color:var(--color-brand);
  font-feature-settings:"tnum";line-height:1;display:block;margin-bottom:16px;
}
.process-item h3{font-size:18px;font-weight:800;margin-bottom:8px}
.process-item p{font-size:14px;color:var(--color-text-2);line-height:1.7}

/* Tags Section */
.tag-section{background:var(--color-ink);border-bottom:1px solid var(--color-line-dark)}
.tag-section .section-head h2{color:#fff}
.tag-section .section-head p{color:var(--color-text-invert-2)}
.tag-list{display:flex;flex-wrap:wrap;gap:12px}
.tag-list .chip-dark{font-size:14px;padding:10px 20px}

/* FAQ */
.faq-container{max-width:860px}
.faq-list{border-top:1px solid var(--color-line)}
.faq-item{border-bottom:1px solid var(--color-line);padding:24px 0}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;cursor:pointer;transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--color-brand)}
.faq-icon{
  width:28px;height:28px;border-radius:50%;border:1px solid var(--color-line);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.faq-icon svg{width:14px;height:14px;stroke:var(--color-text);transition:stroke .3s}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--color-brand)}
.faq-item[open] .faq-icon svg{stroke:var(--color-brand)}
.faq-answer{padding-top:16px;font-size:14px;color:var(--color-text-2);line-height:1.8}

/* CTA */
.cta-section{padding-top:0}
.cta-inner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;padding:64px 48px;
  background-size:cover;background-position:center;text-align:center;
  background-color:var(--color-ink);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at center,rgba(179,18,44,0.4),rgba(10,11,13,0.85));
}
.cta-inner h2{position:relative;font-size:clamp(28px,4vw,40px);font-weight:900;color:#fff;margin-bottom:12px}
.cta-inner p{position:relative;font-size:15px;color:var(--color-text-invert-2);margin-bottom:28px}
.cta-buttons{position:relative;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* Related */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  background:var(--color-paper);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.related-card .card-media{height:150px;overflow:hidden}
.related-card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.related-card:hover .card-media img{transform:scale(1.04)}
.related-card .card-body{padding:20px 22px}
.related-card .card-title{font-size:18px;font-weight:800;margin-bottom:6px}
.related-card .card-desc{font-size:13px;color:var(--color-text-2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* Footer */
.site-footer{background:var(--color-ink);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid var(--color-line-dark)}
.footer-brand .brand{margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--color-text-invert-2);line-height:1.8;max-width:320px;margin-bottom:20px}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--color-line-dark);
  display:flex;align-items:center;justify-content:center;color:var(--color-text-invert-2);
  transition:all .25s var(--ease);
}
.footer-social a:hover{border-color:var(--color-brand);color:#fff}
.footer-social svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:20px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul li a{font-size:14px;color:var(--color-text-invert-2);transition:color .25s var(--ease)}
.footer-col ul li a:hover{color:var(--color-brand)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--color-text-invert-2)}
.footer-contact-item svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;flex-shrink:0;margin-top:4px;color:var(--color-brand)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:24px 0;font-size:12px;color:var(--color-text-invert-2)}

/* Reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.reveal.in-view{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:1200px){
  .feature-grid.grid-a,.feature-grid.grid-b{grid-template-columns:7fr 5fr}
}
@media(max-width:991px){
  .main-nav{display:none}
  .nav-mega-trigger{display:none}
  .nav-toggle{display:flex}
  .header-inner{justify-content:space-between}
  .mobile-drawer{display:none}
  .mobile-drawer.open{display:block}
  .mega-panel{position:static;box-shadow:none;opacity:1;visibility:visible;transform:none;padding:0;border-radius:0;border-top:1px solid var(--color-line-dark)}
  .mega-grid{grid-template-columns:1fr;gap:24px}
  .mega-cta{display:none}
  .intro-cards{grid-template-columns:1fr 1fr}
  .process-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .feature-grid.grid-a,.feature-grid.grid-b{grid-template-columns:1fr}
  .feature-small .card-media{height:140px}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .intro-cards{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .page-banner{padding:120px 0 48px}
  .cta-inner{padding:40px 20px}
  .cta-buttons{flex-direction:column;width:100%}
  .cta-buttons .btn{width:100%}
  .feature-large{min-height:240px}
  .feature-large .card-body{padding:20px}
  .feature-large .card-title{font-size:18px}
  .banner-title{font-size:32px}
  .feature-stack{grid-template-columns:1fr;display:grid}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root {
  --color-ink: #0B0C0E;
  --color-ink-2: #15171B;
  --color-paper: #F6F2EB;
  --color-paper-2: #EEE8E0;
  --color-brand: #B3122C;
  --color-brand-hover: #D12A3D;
  --color-champagne: #A07A42;
  --color-text: #17181B;
  --color-text-2: #62676D;
  --color-text-invert: #F3EFE9;
  --color-text-invert-2: #9BA0A8;
  --color-line: rgba(0,0,0,0.08);
  --color-line-dark: rgba(255,255,255,0.12);
  --r-lg: 20px;
  --r-md: 12px;
  --r-sm: 6px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.03), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.04), 0 20px 44px rgba(0,0,0,0.12);
  --shadow-pop: 0 20px 60px rgba(0,0,0,0.5);
  --container: 1280px;
  --space-section: clamp(64px, 8vw, 112px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  border: none;
  background: none;
  font-family: inherit;
  cursor: pointer;
}
ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 11, 13, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.site-header.scrolled {
  background: rgba(10, 11, 13, 0.97);
  border-bottom-color: var(--color-line-dark);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-hover) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 14px rgba(179, 18, 44, 0.35);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-line1 {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.01em;
}
.brand-line2 {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.58);
  text-transform: uppercase;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  white-space: nowrap;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--color-brand-hover);
  transform: translateX(-50%);
  transition: width 0.25s cubic-bezier(0.2, 0, 0, 1);
}
.nav-link:hover {
  color: #fff;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 18px;
}
.nav-link.active {
  color: var(--color-brand-hover);
}
.nav-mega-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s ease;
}
.nav-mega-trigger:hover {
  border-color: var(--color-brand-hover);
  color: var(--color-brand-hover);
  background: rgba(179, 18, 44, 0.08);
}
.nav-mega-trigger svg {
  transition: transform 0.2s ease;
}
.nav-mega-trigger.open svg {
  transform: rotate(90deg);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mega 面板 */
.mega-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: none;
  background: var(--color-ink);
  border-radius: 0 0 20px 20px;
  box-shadow: var(--shadow-pop);
  border-top: 1px solid var(--color-line-dark);
  padding: 32px 0 24px;
}
.mega-panel.open {
  display: block;
  animation: megaIn 0.2s ease;
}
@keyframes megaIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.mega-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.mega-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-invert-2);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.mega-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.mega-tag {
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.25s ease;
}
.mega-tag:hover {
  border-color: var(--color-brand-hover);
  color: var(--color-brand-hover);
  background: rgba(179, 18, 44, 0.08);
}
.mega-news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.mega-news-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: var(--r-md);
  transition: background 0.25s ease;
}
.mega-news-item:hover {
  background: rgba(255, 255, 255, 0.04);
}
.mega-thumb {
  width: 80px;
  height: 52px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}
.mega-news-title {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-invert);
  line-height: 1.4;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.mega-news-date {
  display: block;
  font-size: 12px;
  color: var(--color-text-invert-2);
  margin-top: 2px;
}
.mega-empty {
  font-size: 14px;
  color: var(--color-text-invert-2);
  padding: 12px 0;
}
.mega-entrance {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  min-height: 140px;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  background: linear-gradient(180deg, rgba(11, 12, 14, 0.2) 0%, rgba(11, 12, 14, 0.9) 100%);
}
.mega-entrance-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.mega-entrance-link {
  font-size: 13px;
  color: var(--color-brand-hover);
  font-weight: 600;
}

/* ===== 文章页头 ===== */
.article-hero {
  min-height: 320px;
  padding: 160px 0 64px;
  background:
    linear-gradient(90deg, rgba(10, 11, 13, 0.94) 0%, rgba(10, 11, 13, 0.78) 45%, rgba(10, 11, 13, 0.42) 100%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  display: flex;
  align-items: flex-end;
  position: relative;
}
.article-hero .container {
  width: 100%;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-text-invert-2);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--color-text-invert-2);
  transition: color 0.25s ease;
}
.breadcrumb a:hover {
  color: var(--color-brand-hover);
}
.breadcrumb .breadcrumb-current {
  color: var(--color-brand-hover);
}
.breadcrumb-sep {
  opacity: 0.5;
}
.article-title {
  font-size: clamp(32px, 4.5vw, 44px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-text-invert);
  max-width: 860px;
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--color-text-invert-2);
}
.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
}
.badge-light {
  background: #fff;
  color: var(--color-brand);
}
.badge-red {
  background: var(--color-brand);
  color: #fff;
}

/* ===== 正文阅读区 ===== */
.article-body {
  background: var(--color-paper);
  padding: var(--space-section) 0 64px;
}
.article-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.article-main {
  max-width: 760px;
}
.article-content {
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--color-text);
}
.article-content p {
  margin-bottom: 1.5em;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-text);
  margin: 2em 0 0.8em;
  line-height: 1.3;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin: 1.8em 0 0.6em;
  line-height: 1.4;
}
.article-content img {
  width: 100%;
  border-radius: 16px;
  margin: 24px 0;
}
.article-content blockquote {
  background: var(--color-paper-2);
  border-left: 4px solid var(--color-brand);
  padding: 20px 24px;
  border-radius: 8px;
  margin: 24px 0;
  font-size: 15px;
  color: var(--color-text-2);
  line-height: 1.7;
}
.article-content a {
  color: var(--color-brand);
  font-weight: 500;
}
.article-content a:hover {
  text-decoration: underline;
}
.article-content ul,
.article-content ol {
  margin: 0 0 1.5em 1.2em;
  padding-left: 0.5em;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 0.4em;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 0.4em;
}

/* 标签 + 分享 */
.article-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-line);
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-text-2);
  transition: all 0.25s ease;
}
.tag:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
}
.share-area {
  display: flex;
  align-items: center;
  gap: 8px;
}
.share-area-label {
  font-size: 13px;
  color: var(--color-text-2);
}
.share-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.12);
  color: var(--color-text-2);
  transition: all 0.25s ease;
}
.share-icon:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  background: rgba(179, 18, 44, 0.05);
}
.share-icon svg {
  width: 16px;
  height: 16px;
}

/* 空态 */
.article-empty {
  border: 1px dashed rgba(0, 0, 0, 0.2);
  border-radius: var(--r-lg);
  padding: 80px 24px;
  text-align: center;
  background: var(--color-paper);
}
.article-empty p {
  font-size: 18px;
  color: var(--color-text-2);
  margin-bottom: 24px;
}
.btn-link {
  display: inline-block;
  padding: 12px 28px;
  background: var(--color-brand);
  color: #fff;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
}
.btn-link:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
}

/* ===== 上一篇/下一篇 ===== */
.article-pagination-section {
  background: var(--color-paper-2);
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.article-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.pagination-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background: var(--color-paper);
  border-radius: var(--r-md);
  border: 1px solid var(--color-line);
  transition: all 0.3s ease;
  min-height: 88px;
}
.pagination-link:hover {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.pagination-link.next {
  text-align: right;
  align-items: flex-end;
}
.pagination-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-2);
}
.pagination-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  max-width: 100%;
}
.pagination-link:hover .pagination-title {
  color: var(--color-brand);
}

/* ===== 相关推荐 ===== */
.related-section {
  background: var(--color-paper);
  padding: var(--space-section) 0;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.2;
}
.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  border-radius: 2px;
  background: var(--color-brand);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--color-paper);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-thumb {
  transform: scale(1.03);
}
.related-info {
  padding: 20px;
}
.related-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.related-card:hover .related-title {
  color: var(--color-brand);
}
.related-meta {
  font-size: 13px;
  color: var(--color-text-2);
}
.related-meta .badge {
  margin-right: 8px;
}

/* ===== CTA ===== */
.article-cta {
  background:
    radial-gradient(circle at center, rgba(179, 18, 44, 0.35) 0%, rgba(10, 11, 13, 0.85) 70%),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  padding: 80px 0;
  text-align: center;
}
.article-cta-inner {
  max-width: 640px;
  margin: 0 auto;
}
.cta-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  color: var(--color-text-invert);
  margin-bottom: 16px;
  line-height: 1.2;
}
.cta-desc {
  font-size: 15px;
  color: var(--color-text-invert-2);
  margin-bottom: 32px;
  line-height: 1.6;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--color-brand);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 8px;
  transition: all 0.25s ease;
  min-height: 48px;
}
.btn-primary:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(179, 18, 44, 0.35);
}
.btn-primary:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-ink);
  padding: 64px 0 0;
  border-top: 1px solid var(--color-line-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 14px;
  color: var(--color-text-invert-2);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 320px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  color: var(--color-text-invert-2);
  transition: all 0.25s ease;
}
.footer-social a:hover {
  border-color: var(--color-brand-hover);
  color: var(--color-brand-hover);
  background: rgba(179, 18, 44, 0.1);
}
.footer-social svg {
  width: 16px;
  height: 16px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-invert);
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--color-text-invert-2);
  transition: color 0.25s ease;
}
.footer-col ul li a:hover {
  color: var(--color-brand-hover);
}
.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip-dark {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-text-invert-2);
  transition: all 0.25s ease;
}
.chip-dark:hover {
  border-color: var(--color-brand-hover);
  color: var(--color-brand-hover);
  background: rgba(179, 18, 44, 0.08);
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-invert-2);
  line-height: 1.5;
}
.footer-contact-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-text-invert-2);
}
.footer-bottom {
  border-top: 1px solid var(--color-line-dark);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .main-nav {
    display: none;
  }
  .nav-mega-trigger {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .mega-panel {
    display: none;
  }
  .mega-panel.open {
    display: block;
  }
  .mega-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .nav-open .main-nav {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-ink);
    padding: 24px;
    gap: 4px;
    border-bottom: 1px solid var(--color-line-dark);
  }
  .nav-open .nav-mega-trigger {
    display: none;
  }
  .article-hero {
    padding: 130px 0 48px;
    min-height: 280px;
  }
  .article-title {
    font-size: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .article-pagination {
    grid-template-columns: 1fr;
  }
  .pagination-link.next {
    text-align: left;
    align-items: flex-start;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .article-hero {
    padding: 110px 0 40px;
  }
  .article-title {
    font-size: 26px;
  }
  .article-meta {
    gap: 10px;
    font-size: 12px;
  }
  .brand-line1 {
    font-size: 16px;
  }
  .brand-line2 {
    font-size: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* roulang page: category3 */
:root {
  --color-ink: #0B0C0E;
  --color-ink-2: #15171B;
  --color-paper: #F6F2EB;
  --color-paper-2: #EEE8E0;
  --color-brand: #B3122C;
  --color-brand-hover: #D12A3D;
  --color-champagne: #A07A42;
  --color-text: #17181B;
  --color-text-2: #62676D;
  --color-text-invert: #F3EFE9;
  --color-text-invert-2: #9BA0A8;
  --color-line: rgba(0,0,0,0.08);
  --color-line-dark: rgba(255,255,255,0.12);
  --r-lg: 20px;
  --r-md: 12px;
  --r-sm: 6px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.03), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.04), 0 20px 44px rgba(0,0,0,0.12);
  --shadow-pop: 0 20px 60px rgba(0,0,0,0.5);
  --container: 1280px;
  --space-section: clamp(64px, 8vw, 112px);
  --font-family: "PingFang SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num: "DIN Alternate","Bahnschrift",Arial,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--color-paper); color: var(--color-text); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding-left: clamp(16px, 4vw, 48px); padding-right: clamp(16px, 4vw, 48px); }
section { margin-bottom: 0; }
.badge { display: inline-flex; align-items: center; background: var(--color-brand); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; letter-spacing: 0.04em; }
.badge-light { background: #fff; color: var(--color-brand); }
.tag { display: inline-flex; align-items: center; padding: 6px 14px; border: 1px solid rgba(0,0,0,0.15); border-radius: 999px; font-size: 13px; color: var(--color-text); transition: all 0.25s; }
.tag:hover { border-color: var(--color-brand); color: var(--color-brand); }
/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10,11,13,0.88); backdrop-filter: blur(8px); height: 72px; transition: background 0.3s, border-color 0.3s; border-bottom: 1px solid transparent; }
.site-header.scrolled { background: rgba(10,11,13,0.97); border-bottom-color: rgba(255,255,255,0.08); }
.header-inner { height: 72px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark { width: 40px; height: 40px; border-radius: 8px; background: linear-gradient(135deg, var(--color-brand) 0%, #8a0d20 50%, #0B0C0E 50%, #15171B 100%); display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 14px; color: #fff; letter-spacing: -0.02em; border: 1px solid rgba(255,255,255,0.2); }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-line1 { font-size: 19px; font-weight: 800; color: #fff; letter-spacing: 0.01em; }
.brand-line2 { font-size: 11px; color: #9BA0A8; letter-spacing: 0.18em; text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: 12px; flex: 1; }
.nav-link { position: relative; padding: 10px 16px; font-size: 15px; font-weight: 600; color: rgba(255,255,255,0.85); transition: color 0.25s; }
.nav-link::after { content: ""; position: absolute; left: 50%; bottom: 2px; width: 8px; height: 2px; background: var(--color-brand); border-radius: 2px; transform: translateX(-50%) scaleX(0); transition: transform 0.25s; }
.nav-link:hover { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { transform: translateX(-50%) scaleX(1); }
.nav-link.active { color: #fff; }
.nav-mega-trigger { display: inline-flex; align-items: center; gap: 8px; padding: 9px 18px; border: 1px solid rgba(255,255,255,0.35); border-radius: 999px; color: #fff; font-size: 13px; font-weight: 600; background: transparent; transition: all 0.25s; }
.nav-mega-trigger:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); }
.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; color: #fff; }
.nav-toggle svg { width: 22px; height: 22px; }
.mega-panel { position: absolute; top: 72px; left: 0; right: 0; background: var(--color-ink); border-radius: 0 0 20px 20px; box-shadow: var(--shadow-pop); opacity: 0; visibility: hidden; transform: translateY(6px); transition: all 0.2s cubic-bezier(0.2,0,0,1); border-top: 1px solid rgba(255,255,255,0.06); }
.mega-panel.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-panel .container { padding-top: 32px; padding-bottom: 24px; }
.mega-grid { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 40px; }
.mega-col { min-width: 0; }
.mega-col-title { font-size: 13px; font-weight: 700; color: var(--color-brand); letter-spacing: 0.1em; margin-bottom: 16px; text-transform: uppercase; }
.mega-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.mega-tag { display: inline-flex; align-items: center; padding: 7px 14px; border: 1px solid rgba(255,255,255,0.15); border-radius: 999px; font-size: 13px; color: var(--color-text-invert-2); transition: all 0.25s; }
.mega-tag:hover { border-color: var(--color-brand); color: var(--color-brand); }
.mega-news-list { display: flex; flex-direction: column; gap: 10px; }
.mega-news-item { display: flex; align-items: center; gap: 12px; padding: 8px; border-radius: var(--r-sm); transition: background 0.25s; }
.mega-news-item:hover { background: rgba(255,255,255,0.05); }
.mega-thumb { width: 80px; height: 52px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.mega-news-text { min-width: 0; }
.mega-news-title { font-size: 14px; font-weight: 600; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mega-news-date { font-size: 12px; color: var(--color-text-invert-2); margin-top: 2px; }
.mega-empty { font-size: 13px; color: var(--color-text-invert-2); padding: 16px 8px; }
.mega-cta-card { border-radius: var(--r-md); overflow: hidden; position: relative; }
.mega-cta-img { height: 120px; background-size: cover; background-position: center; position: relative; }
.mega-cta-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11,12,14,0.1), rgba(11,12,14,0.8)); }
.mega-cta-body { padding: 14px 16px 16px; background: var(--color-ink-2); }
.mega-cta-title { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.mega-cta-btn { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; color: var(--color-brand); transition: gap 0.25s; }
.mega-cta-btn:hover { gap: 8px; }
@media (max-width: 991px) {
  .main-nav { display: none; }
  .nav-mega-trigger { display: none; }
  .nav-toggle { display: flex; }
  .mega-panel { display: none; }
}
/* Mobile nav drawer */
.mobile-drawer { display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0; background: var(--color-ink); z-index: 999; padding: 24px clamp(16px, 4vw, 48px); overflow-y: auto; }
.mobile-drawer.open { display: block; }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-link { display: block; padding: 14px 8px; font-size: 18px; font-weight: 700; color: #fff; border-bottom: 1px solid rgba(255,255,255,0.08); }
.mobile-nav-link.active { color: var(--color-brand); }
.mobile-extra { margin-top: 24px; }
.mobile-extra-title { font-size: 13px; font-weight: 700; color: var(--color-brand); letter-spacing: 0.1em; margin-bottom: 12px; }
.mobile-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.mobile-tag { padding: 7px 14px; border: 1px solid rgba(255,255,255,0.15); border-radius: 999px; font-size: 13px; color: var(--color-text-invert-2); }
/* Page hero */
.page-hero { background: var(--color-ink); min-height: 280px; padding-top: 72px; display: flex; align-items: center; position: relative; overflow: hidden; }
.page-hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat; opacity: 0.35; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,12,14,0.95) 0%, rgba(11,12,14,0.75) 50%, rgba(11,12,14,0.55) 100%); }
.page-hero-content { position: relative; z-index: 2; width: 100%; padding-top: 40px; padding-bottom: 48px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 18px; }
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color 0.25s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255,255,255,0.35); }
.breadcrumb .current { color: var(--color-brand); }
.page-hero-title { font-size: clamp(36px, 5vw, 44px); font-weight: 900; color: #fff; line-height: 1.15; margin-bottom: 12px; letter-spacing: 0.01em; }
.page-hero-sub { font-size: 14px; color: rgba(255,255,255,0.65); max-width: 720px; }
/* Intro */
.intro-section { background: var(--color-paper); padding: clamp(48px, 6vw, 72px) 0; }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.intro-content { max-width: 640px; }
.intro-kicker { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700; color: var(--color-brand); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 16px; }
.intro-kicker::before { content: ""; width: 4px; height: 22px; border-radius: 2px; background: var(--color-brand); }
.intro-title { font-size: clamp(24px, 3vw, 32px); font-weight: 900; line-height: 1.25; margin-bottom: 16px; color: var(--color-text); }
.intro-text { font-size: 15px; line-height: 1.8; color: var(--color-text-2); }
.intro-text p { margin-bottom: 14px; }
.intro-points { display: grid; gap: 14px; margin-top: 24px; }
.intro-point { display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px; background: #fff; border-radius: var(--r-md); box-shadow: var(--shadow-card); }
.intro-point-icon { width: 36px; height: 36px; border-radius: 10px; background: rgba(179,18,44,0.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--color-brand); }
.intro-point-text { min-width: 0; }
.intro-point-title { font-size: 14px; font-weight: 700; color: var(--color-text); margin-bottom: 2px; }
.intro-point-desc { font-size: 13px; color: var(--color-text-2); line-height: 1.5; }
/* Gallery grid */
.gallery-section { background: var(--color-paper); padding-bottom: var(--space-section); }
.gallery-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; margin-bottom: 24px; }
.gallery-row { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; margin-bottom: 24px; }
.gallery-row:last-child { margin-bottom: 0; }
.card-large { grid-column: span 8; border-radius: var(--r-lg); overflow: hidden; position: relative; min-height: 300px; box-shadow: var(--shadow-card); transition: transform 0.3s cubic-bezier(0.2,0,0,1), box-shadow 0.3s; }
.card-large:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card-large-cover { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform 0.45s; }
.card-large:hover .card-large-cover { transform: scale(1.04); }
.card-large::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11,12,14,0.05) 30%, rgba(11,12,14,0.85) 100%); }
.card-large-body { position: absolute; left: 0; right: 0; bottom: 0; padding: 24px; z-index: 2; }
.card-large .badge { margin-bottom: 10px; }
.card-large-title { font-size: 20px; font-weight: 800; color: #fff; line-height: 1.4; margin-bottom: 6px; }
.card-large-desc { font-size: 14px; color: rgba(255,255,255,0.75); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.stack-small { grid-column: span 4; display: flex; flex-direction: column; gap: 24px; }
.card-small { background: #fff; border-radius: 16px; box-shadow: var(--shadow-card); overflow: hidden; transition: transform 0.3s cubic-bezier(0.2,0,0,1), box-shadow 0.3s; }
.card-small:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card-small-thumb { height: 110px; background-size: cover; background-position: center; position: relative; }
.card-small-body { padding: 14px 16px 16px; }
.card-small-title { font-size: 15px; font-weight: 700; color: var(--color-text); line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 6px; }
.card-small-meta { font-size: 12px; color: var(--color-text-2); }
.reverse-row .card-large { grid-column: span 8; grid-order: 2; }
.reverse-row .stack-small { grid-column: span 4; grid-order: 1; }
@media (max-width: 991px) {
  .gallery-row { grid-template-columns: 1fr; gap: 20px; }
  .card-large, .stack-small, .reverse-row .card-large, .reverse-row .stack-small { grid-column: span 1; }
  .stack-small { flex-direction: row; flex-wrap: wrap; }
  .stack-small .card-small { flex: 1 1 calc(50% - 12px); }
  .reverse-row .stack-small { order: 2; }
  .reverse-row .card-large { order: 1; }
}
@media (max-width: 767px) {
  .stack-small { flex-direction: column; }
  .stack-small .card-small { flex: 1 1 100%; }
  .card-large { min-height: 240px; }
}
/* Tags section */
.tags-section { background: var(--color-paper-2); padding: 48px 0; border-top: 1px solid var(--color-line); border-bottom: 1px solid var(--color-line); }
.tags-section .section-head { margin-bottom: 20px; }
.tags-wrap { display: flex; flex-wrap: wrap; gap: 10px; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.section-title-wrap { display: flex; align-items: center; gap: 12px; }
.section-title-bar { width: 4px; height: 24px; border-radius: 2px; background: var(--color-brand); flex-shrink: 0; }
.section-title { font-size: clamp(20px, 2.4vw, 26px); font-weight: 900; color: var(--color-text); line-height: 1.3; }
/* Related */
.related-section { background: var(--color-paper); padding: var(--space-section) 0; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: #fff; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-card); transition: transform 0.3s, box-shadow 0.3s; }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-thumb { height: 160px; background-size: cover; background-position: center; position: relative; }
.related-body { padding: 18px 20px 20px; }
.related-cat { font-size: 12px; font-weight: 600; color: var(--color-brand); margin-bottom: 6px; display: inline-block; }
.related-title { font-size: 16px; font-weight: 700; line-height: 1.45; color: var(--color-text); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-link { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; font-weight: 600; color: var(--color-brand); }
.related-link svg { transition: transform 0.25s; }
.related-link:hover svg { transform: translateX(4px); }
/* CTA */
.cta-section { background: var(--color-ink); position: relative; overflow: hidden; padding: 72px 0; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at center, rgba(179,18,44,0.35), rgba(10,11,13,0.8)); z-index: 1; }
.cta-section::after { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat; opacity: 0.12; z-index: 0; }
.cta-content { position: relative; z-index: 2; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-title { font-size: clamp(28px, 4vw, 44px); font-weight: 900; color: #fff; line-height: 1.25; margin-bottom: 14px; }
.cta-desc { font-size: 15px; color: rgba(255,255,255,0.7); margin-bottom: 28px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 8px; font-weight: 700; transition: all 0.25s cubic-bezier(0.2,0,0,1); min-height: 44px; padding: 0 24px; font-size: 15px; }
.btn-primary { background: var(--color-brand); color: #fff; }
.btn-primary:hover { background: var(--color-brand-hover); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-outline-light { background: transparent; border: 1px solid rgba(255,255,255,0.4); color: #fff; }
.btn-outline-light:hover { background: #fff; color: var(--color-ink); border-color: #fff; }
/* Footer */
.site-footer { background: var(--color-ink); color: rgba(255,255,255,0.7); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-desc { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 300px; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.7); transition: all 0.25s; }
.footer-social a:hover { border-color: var(--color-brand); color: var(--color-brand); }
.footer-social svg { width: 16px; height: 16px; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.02em; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.6); transition: color 0.25s; }
.footer-col ul a:hover { color: var(--color-brand); }
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; padding: 6px 12px; border-radius: 999px; font-size: 12px; border: 1px solid rgba(255,255,255,0.15); color: rgba(255,255,255,0.6); transition: all 0.25s; }
.chip:hover { border-color: var(--color-brand); color: var(--color-brand); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact-item { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; line-height: 1.6; color: rgba(255,255,255,0.5); }
.footer-contact-item svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; color: rgba(255,255,255,0.3); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 12px; color: rgba(255,255,255,0.35); }
@media (max-width: 991px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
/* Reveal */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.45s cubic-bezier(0.2,0,0,1), transform 0.45s cubic-bezier(0.2,0,0,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* roulang page: category2 */
:root {
  --color-ink: #0B0C0E;
  --color-ink-2: #15171B;
  --color-paper: #F6F2EB;
  --color-paper-2: #EEE8E0;
  --color-brand: #B3122C;
  --color-brand-hover: #D12A3D;
  --color-champagne: #A07A42;
  --color-text: #17181B;
  --color-text-2: #62676D;
  --color-text-invert: #F3EFE9;
  --color-text-invert-2: #9BA0A8;
  --color-line: rgba(0,0,0,0.08);
  --color-line-dark: rgba(255,255,255,0.12);
  --r-lg: 20px;
  --r-md: 12px;
  --r-sm: 6px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.03), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.04), 0 20px 44px rgba(0,0,0,0.12);
  --shadow-pop: 0 20px 60px rgba(0,0,0,0.5);
  --container: 1280px;
  --space-section: clamp(64px, 8vw, 112px);
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--color-paper);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s var(--ease-out), border-color 0.25s var(--ease-out), background 0.25s var(--ease-out), transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 11, 13, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.site-header.scrolled {
  background: rgba(10, 11, 13, 0.97);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand) 55%, #0B0C0E 55%, #0B0C0E 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-line1 {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.01em;
}

.brand-line2 {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.62);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 12px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.82);
  border-radius: 8px;
  transition: color 0.25s var(--ease-out);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-brand);
  opacity: 0;
  transition: opacity 0.25s var(--ease-out), width 0.25s var(--ease-out);
}

.nav-link:hover {
  color: #fff;
}

.nav-link:hover::after,
.nav-link.active::after {
  opacity: 1;
  width: 18px;
}

.nav-link.active {
  color: #fff;
}

.nav-mega-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  transition: border-color 0.25s var(--ease-out), color 0.25s var(--ease-out), background 0.25s var(--ease-out);
}

.nav-mega-trigger:hover {
  border-color: var(--color-brand);
  color: #fff;
  background: rgba(179, 18, 44, 0.18);
}

.nav-mega-trigger svg {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: #fff;
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* Mega Panel */
.mega-panel {
  position: absolute;
  top: calc(100% + 0);
  left: 50%;
  transform: translate(-50%, 6px);
  width: calc(var(--container) - 32px);
  max-width: calc(100vw - 32px);
  background: var(--color-ink);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-pop);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s var(--ease-out), transform 0.22s var(--ease-out), visibility 0.22s;
}

.mega-panel.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

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

.mega-col-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 16px;
}

.mega-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mega-tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  transition: border-color 0.25s var(--ease-out), color 0.25s var(--ease-out);
}

.mega-tag:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-hover);
}

.mega-news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mega-news-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: var(--r-md);
  transition: background 0.25s var(--ease-out);
}

.mega-news-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.mega-thumb {
  width: 80px;
  height: 52px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
}

.mega-news-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.mega-news-title {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mega-news-time {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.42);
}

.mega-feature {
  display: block;
  border-radius: var(--r-md);
  overflow: hidden;
  position: relative;
  min-height: 140px;
}

.mega-feature img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.mega-feature-text {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 44px;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  z-index: 1;
}

.mega-feature-btn {
  position: absolute;
  left: 14px;
  bottom: 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-brand-hover);
  z-index: 1;
}

/* ===== 深色页头 ===== */
.page-hero {
  position: relative;
  min-height: 320px;
  background: var(--color-ink);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding-top: 130px;
  isolation: isolate;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 11, 13, 0.94) 0%, rgba(10, 11, 13, 0.78) 55%, rgba(10, 11, 13, 0.45) 100%);
  z-index: -1;
}

.page-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 140px;
  background: linear-gradient(180deg, transparent 0%, var(--color-paper) 100%);
  z-index: 0;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 2;
  padding-bottom: 48px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb .current {
  color: var(--color-brand-hover);
  font-weight: 600;
}

.page-hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-text-invert);
  letter-spacing: 0.01em;
  margin-bottom: 12px;
}

.page-hero-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.62);
  max-width: 640px;
}

/* ===== 通用区块 ===== */
.section {
  padding: var(--space-section) 0;
}

.section-intro {
  background: var(--color-paper);
}

.intro-wrap {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-brand);
  margin-bottom: 14px;
}

.section-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-brand);
  border-radius: 2px;
}

.section-kicker::after {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-brand);
  border-radius: 2px;
}

.intro-wrap h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 20px;
}

.intro-wrap p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-2);
  margin: 0 auto;
  max-width: 760px;
}

/* ===== 内容分区 ===== */
.content-section {
  background: var(--color-paper-2);
  padding: var(--space-section) 0;
}

.section-title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 24px;
  flex-wrap: wrap;
}

.section-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-accent {
  width: 4px;
  height: 26px;
  background: var(--color-brand);
  border-radius: 2px;
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-text);
}

.section-sub {
  font-size: 14px;
  color: var(--color-text-2);
  max-width: 520px;
  margin-top: 6px;
}

/* 非对称网格 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  align-items: stretch;
}

.grid-8 {
  grid-column: span 8;
}

.grid-4 {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.feature-row {
  margin-bottom: 24px;
}

.feature-row:last-child {
  margin-bottom: 0;
}

/* 大卡 */
.card-large {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  isolation: isolate;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

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

.card-large .card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transition: transform 0.5s var(--ease-out);
}

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

.card-large::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 12, 14, 0) 35%, rgba(11, 12, 14, 0.82) 100%);
  z-index: -1;
}

.card-large .card-body {
  padding: 28px 28px 24px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  background: var(--color-brand);
  color: #fff;
  border-radius: 999px;
  line-height: 1;
}

.time-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(10, 11, 13, 0.6);
  border-radius: 999px;
  line-height: 1;
}

.card-large h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 10px;
}

.card-large .card-excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 小卡 */
.card-small {
  display: flex;
  gap: 16px;
  background: var(--color-paper);
  border-radius: var(--r-md);
  padding: 14px;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
  min-height: 112px;
}

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

.card-small .thumb {
  width: 108px;
  height: 84px;
  object-fit: cover;
  border-radius: var(--r-md);
  flex-shrink: 0;
}

.card-small .info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.card-small h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-small .card-desc {
  font-size: 12px;
  color: var(--color-text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 栏目分区标题行 */
.feature-grid + .feature-grid {
  margin-top: 0;
}

/* ===== 标签区 ===== */
.tags-section {
  background: var(--color-paper);
  padding: var(--space-section) 0;
}

.tags-wrap {
  text-align: center;
}

.tags-wrap .section-title {
  justify-content: center;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-2);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 999px;
  transition: border-color 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

.tag-chip:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  transform: translateY(-2px);
}

/* ===== 相关栏目 ===== */
.related-section {
  background: var(--color-paper-2);
  padding: var(--space-section) 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--color-paper);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

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

.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}

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

.related-card .related-body {
  padding: 20px 20px 24px;
}

.related-card h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.related-card p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-brand);
  margin-top: 14px;
}

.related-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.25s var(--ease-out);
}

.related-link:hover svg {
  transform: translateX(4px);
}

/* ===== CTA ===== */
.cta-section {
  background: var(--color-ink);
  padding: var(--space-section) 0;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(179, 18, 44, 0.32), rgba(10, 11, 13, 0.85));
  z-index: -1;
}

.cta-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.14;
  z-index: -2;
}

.cta-wrap {
  text-align: center;
  padding: 24px 0;
}

.cta-wrap h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 900;
  color: var(--color-text-invert);
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-wrap p {
  font-size: 15px;
  color: var(--color-text-invert-2);
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 10px;
  min-height: 48px;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out), border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(179, 18, 44, 0.35);
}

.btn-primary:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(179, 18, 44, 0.4);
}

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

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: rgba(255, 255, 255, 0.9);
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-1px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-ink);
  padding: 64px 0 0;
  color: var(--color-text-invert);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand-line1 {
  font-size: 18px;
}

.footer-brand .brand-line2 {
  font-size: 10px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.55);
  margin: 18px 0 22px;
  max-width: 340px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.65);
  transition: border-color 0.25s var(--ease-out), color 0.25s var(--ease-out), background 0.25s var(--ease-out);
}

.footer-social a:hover {
  border-color: var(--color-brand);
  color: #fff;
  background: rgba(179, 18, 44, 0.2);
}

.footer-social svg {
  width: 16px;
  height: 16px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.25s var(--ease-out), padding-left 0.25s var(--ease-out);
}

.footer-col ul a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-dark {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  transition: border-color 0.25s var(--ease-out), color 0.25s var(--ease-out);
}

.chip-dark:hover {
  border-color: var(--color-brand);
  color: #fff;
}

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

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

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  stroke: rgba(255, 255, 255, 0.4);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 24px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.38);
  flex-wrap: wrap;
}

.footer-bottom p {
  margin: 0;
}

.footer-icp {
  color: rgba(255, 255, 255, 0.28);
}

/* ===== 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .mega-panel {
    left: 16px;
    right: 16px;
    transform: translateY(6px);
    width: auto;
  }
  .mega-panel.open {
    transform: translateY(0);
  }
}

@media (max-width: 991px) {
  .header-inner {
    height: 64px;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 11, 13, 0.97);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 4px;
    margin-left: 0;
    transform: translateY(-120%);
    transition: transform 0.3s var(--ease-out);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-link {
    width: 100%;
    padding: 14px 12px;
    font-size: 16px;
    border-radius: 8px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.active {
    background: rgba(179, 18, 44, 0.2);
    color: #fff;
  }

  .nav-mega-trigger {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-toggle.open svg {
    transform: rotate(45deg);
  }

  .nav-toggle.open svg path:nth-child(1) {
    d: path("M18 6L6 18M6 6l12 12");
  }

  .mega-panel {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    transform: translateY(-8px);
    border-radius: 0 0 20px 20px;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    background: rgba(10, 11, 13, 0.98);
    width: 100%;
    max-width: 100%;
  }

  .mega-panel.open {
    transform: translateY(0);
  }

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

  .mega-feature {
    display: none;
  }

  .page-hero {
    min-height: 280px;
    padding-top: 100px;
  }

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

  .grid-8,
  .grid-4 {
    grid-column: span 12;
  }

  .grid-4 {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .grid-4 .card-small {
    flex: 1 1 calc(50% - 12px);
    min-width: 250px;
  }

  .related-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 767px) {
  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 13px;
    border-radius: 8px;
  }

  .brand-line1 {
    font-size: 16px;
  }

  .brand-line2 {
    font-size: 10px;
  }

  .page-hero {
    min-height: 240px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .page-hero-desc {
    font-size: 14px;
  }

  .feature-grid {
    gap: 16px;
  }

  .grid-4 {
    flex-direction: column;
  }

  .grid-4 .card-small {
    flex: 1 1 auto;
    min-width: 100%;
  }

  .card-small {
    padding: 12px;
  }

  .card-small .thumb {
    width: 88px;
    height: 72px;
  }

  .card-large {
    min-height: 260px;
  }

  .card-large .card-body {
    padding: 20px;
  }

  .card-large h3 {
    font-size: 18px;
  }

  .card-large .card-excerpt {
    font-size: 13px;
    -webkit-line-clamp: 2;
  }

  .tags-list {
    gap: 8px;
  }

  .tag-chip {
    padding: 8px 16px;
    font-size: 13px;
  }

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

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

  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category4 */
:root {
  --color-ink: #0B0C0E;
  --color-ink-2: #15171B;
  --color-paper: #F6F2EB;
  --color-paper-2: #EEE8E0;
  --color-brand: #B3122C;
  --color-brand-hover: #D12A3D;
  --color-champagne: #A07A42;
  --color-text: #17181B;
  --color-text-2: #62676D;
  --color-text-invert: #F3EFE9;
  --color-text-invert-2: #9BA0A8;
  --color-line: rgba(0,0,0,0.08);
  --color-line-dark: rgba(255,255,255,0.12);
  --r-lg: 20px;
  --r-md: 12px;
  --r-sm: 6px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.03), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.04), 0 20px 44px rgba(0,0,0,0.12);
  --shadow-pop: 0 20px 60px rgba(0,0,0,0.5);
  --container: 1280px;
  --space-section: clamp(64px, 8vw, 112px);
  --ease: cubic-bezier(0.2,0,0,1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--color-paper);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 48px);
  padding-right: clamp(16px, 4vw, 48px);
}

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10,11,13,0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.site-header.scrolled {
  background: rgba(10,11,13,0.97);
  border-bottom-color: var(--color-line-dark);
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 32px;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-brand) 50%, var(--color-ink) 50%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.02em;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.14);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-line1 {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
}

.brand-line2 {
  font-size: 11px;
  color: var(--color-text-invert-2);
  letter-spacing: 0.18em;
  margin-top: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: 16px;
}

.nav-link {
  position: relative;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-invert);
  padding: 8px 0;
  transition: color 0.25s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-brand);
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.25s var(--ease);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-brand-hover);
}

.nav-mega-trigger {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 999px;
  color: var(--color-text-invert);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.nav-mega-trigger:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
}

.nav-mega-trigger.open {
  background: var(--color-brand);
  border-color: var(--color-brand);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-text-invert);
  margin-left: auto;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mega 面板 */
.mega-panel {
  position: absolute;
  top: 72px;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  width: min(var(--container), calc(100% - 32px));
  background: var(--color-ink);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-pop);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
  z-index: 999;
}

.mega-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  padding: 32px 36px 28px;
}

.mega-col + .mega-col {
  border-left: 1px solid var(--color-line-dark);
  padding-left: 32px;
}

.mega-col-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-invert-2);
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}

.mega-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mega-tag {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-text-invert);
  line-height: 1.4;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.mega-tag:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-hover);
}

.mega-news-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mega-news-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mega-thumb {
  width: 80px;
  height: 52px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.mega-news-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.mega-news-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-invert);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s var(--ease);
}

.mega-news-title:hover {
  color: var(--color-brand-hover);
}

.mega-news-meta {
  font-size: 12px;
  color: var(--color-text-invert-2);
  margin-top: 4px;
}

.mega-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  height: 100%;
  min-height: 130px;
  padding: 20px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(179,18,44,0.32), rgba(10,11,13,0.6));
  border: 1px solid var(--color-line-dark);
}

.mega-cta-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-invert);
  margin-bottom: 14px;
}

.mega-cta-btn {
  display: inline-block;
  padding: 9px 20px;
  background: var(--color-brand);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.mega-cta-btn:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
}

/* ========== 页头 Banner ========== */
.page-hero {
  position: relative;
  min-height: 300px;
  background: url("/assets/images/backpic/back-2.webp") center 30% / cover no-repeat;
  display: flex;
  align-items: center;
  padding-top: 72px;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10,11,13,0.92) 0%, rgba(10,11,13,0.78) 50%, rgba(10,11,13,0.45) 100%);
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 80px;
  background: linear-gradient(180deg, transparent, rgba(11,12,14,0.55));
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-invert-2);
  margin-bottom: 20px;
}

.breadcrumb a {
  transition: color 0.2s var(--ease);
}

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

.breadcrumb .sep {
  opacity: 0.6;
}

.breadcrumb .current {
  color: var(--color-brand-hover);
  font-weight: 600;
}

.page-hero-title {
  font-size: clamp(36px, 5vw, 44px);
  font-weight: 900;
  color: var(--color-text-invert);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-hero-sub {
  font-size: 15px;
  color: var(--color-text-invert-2);
  margin-top: 12px;
  max-width: 560px;
}

/* ========== 通用区块 ========== */
.section {
  padding: var(--space-section) 0;
}

.section-light {
  background: var(--color-paper);
}

.section-tint {
  background: var(--color-paper-2);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 44px;
}

.section-head-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-title-bar {
  width: 4px;
  height: 24px;
  border-radius: 2px;
  background: var(--color-brand);
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(28px, 3vw, 32px);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.25;
}

.section-sub {
  font-size: 14px;
  color: var(--color-text-2);
  margin-top: 6px;
}

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
  white-space: nowrap;
  transition: gap 0.2s var(--ease);
}

.more-link:hover {
  gap: 9px;
}

.more-link svg {
  transition: transform 0.2s var(--ease);
}

.more-link:hover svg {
  transform: translateX(2px);
}

/* ========== 栏目介绍 ========== */
.intro-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: center;
}

.intro-copy h2 {
  font-size: 30px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 20px;
}

.intro-copy p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-2);
  margin-bottom: 16px;
}

.intro-copy p:last-child {
  margin-bottom: 0;
}

.intro-meta {
  background: var(--color-ink);
  border-radius: var(--r-lg);
  padding: 36px 32px;
  color: var(--color-text-invert);
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.intro-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.intro-meta-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(179,18,44,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-brand-hover);
  flex-shrink: 0;
}

.intro-meta-item h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.intro-meta-item p {
  font-size: 13px;
  color: var(--color-text-invert-2);
  line-height: 1.6;
}

.intro-meta-divider {
  height: 1px;
  background: var(--color-line-dark);
}

/* ========== 非对称内容栅格 ========== */
.feature-row {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 24px;
  margin-bottom: 24px;
}

.feature-row.flip {
  grid-template-columns: 4fr 8fr;
}

.feature-row.flip .feature-large {
  order: 2;
}

.feature-row.flip .feature-stack {
  order: 1;
}

.feature-large {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  min-height: 300px;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

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

.feature-large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.45s var(--ease);
}

.feature-large:hover img {
  transform: scale(1.04);
}

.feature-large::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,12,14,0.05) 0%, rgba(11,12,14,0.88) 100%);
}

.feature-large .feature-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px;
  z-index: 2;
}

.feature-tag {
  display: inline-block;
  background: var(--color-brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.feature-large .feature-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-invert);
  line-height: 1.35;
  margin-bottom: 10px;
  transition: color 0.2s var(--ease);
}

.feature-large:hover .feature-title {
  color: var(--color-brand-hover);
}

.feature-large .feature-desc {
  font-size: 14px;
  color: var(--color-text-invert-2);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feature-stack {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--color-paper-2);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

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

.feature-card img {
  width: 110px;
  height: 100%;
  min-height: 120px;
  object-fit: cover;
  flex-shrink: 0;
}

.feature-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color 0.2s var(--ease);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feature-card:hover .feature-card-title {
  color: var(--color-brand-hover);
}

.feature-card-desc {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========== 标签列表 ========== */
.tag-section {
  background: var(--color-ink);
}

.tag-section .section-title {
  color: var(--color-text-invert);
}

.tag-section .section-sub {
  color: var(--color-text-invert-2);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 780px;
}

.chip {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-paper);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.chip:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  background: #fff;
}

.chip-dark {
  background: transparent;
  border-color: var(--color-line-dark);
  color: var(--color-text-invert);
  font-size: 13px;
  padding: 6px 14px;
}

.chip-dark:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-hover);
  background: rgba(179,18,44,0.12);
}

/* ========== 相关栏目推荐 ========== */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: #fff;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

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

.related-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s var(--ease);
}

.related-card:hover .related-thumb img {
  transform: scale(1.04);
}

.related-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11,12,14,0.55));
}

.related-body {
  padding: 22px 24px 24px;
}

.related-body h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color 0.2s var(--ease);
}

.related-card:hover .related-body h3 {
  color: var(--color-brand-hover);
}

.related-body p {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========== CTA 区块 ========== */
.cta-section {
  background: var(--color-ink);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(179,18,44,0.32), rgba(10,11,13,0.82));
}

.cta-wrap {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 72px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  color: var(--color-text-invert);
  line-height: 1.3;
  margin-bottom: 14px;
}

.cta-text {
  font-size: 15px;
  color: var(--color-text-invert-2);
  margin-bottom: 32px;
  max-width: 520px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 34px;
  background: var(--color-brand);
  color: #fff;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.cta-btn:hover {
  background: var(--color-brand-hover);
  transform: translateY(-2px);
}

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

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-ink);
  border-top: 1px solid var(--color-line-dark);
  padding-top: 64px;
  color: var(--color-text-invert);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  margin-bottom: 18px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-invert-2);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--color-line-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-invert-2);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.footer-social a svg {
  width: 18px;
  height: 18px;
}

.footer-social a:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-hover);
  background: rgba(179,18,44,0.12);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-invert);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

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

.footer-col ul a {
  font-size: 14px;
  color: var(--color-text-invert-2);
  transition: color 0.2s var(--ease);
}

.footer-col ul a:hover {
  color: var(--color-brand-hover);
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-invert-2);
  line-height: 1.6;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-brand-hover);
}

.footer-bottom {
  border-top: 1px solid var(--color-line-dark);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-invert-2);
}

.footer-icp {
  transition: color 0.2s var(--ease);
}

.footer-icp:hover {
  color: var(--color-brand-hover);
}

/* ========== 响应式 ========== */
@media (max-width: 991px) {
  .main-nav,
  .nav-mega-trigger {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mega-panel {
    position: fixed;
    top: 72px;
    left: 16px;
    right: 16px;
    width: auto;
    transform: translateY(6px);
    max-height: calc(100vh - 90px);
    overflow-y: auto;
  }

  .mega-panel.open {
    transform: translateY(0);
  }

  .mega-grid {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 24px;
  }

  .mega-col + .mega-col {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--color-line-dark);
    padding-top: 24px;
    margin-top: 24px;
  }

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

  .feature-row,
  .feature-row.flip {
    grid-template-columns: 1fr;
  }

  .feature-row.flip .feature-large,
  .feature-row.flip .feature-stack {
    order: initial;
  }

  .feature-stack {
    grid-template-rows: none;
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 767px) {
  .header-inner {
    gap: 16px;
  }

  .brand-line1 {
    font-size: 16px;
  }

  .brand-line2 {
    font-size: 10px;
  }

  .page-hero {
    min-height: 260px;
  }

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

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .feature-large {
    min-height: 240px;
  }

  .feature-card {
    flex-direction: column;
  }

  .feature-card img {
    width: 100%;
    height: 130px;
    min-height: 0;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-wrap {
    padding: 56px 0;
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
    max-width: 360px;
  }
}

@media (max-width: 520px) {
  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }

  .feature-large .feature-body {
    padding: 20px;
  }

  .feature-large .feature-title {
    font-size: 19px;
  }

  .feature-card-title {
    font-size: 15px;
  }
}

/* 可访问性 */
:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}