/* roulang page: index */
:root {
  --primary: #1B6CFF;
  --primary-rgb: 27, 108, 255;
  --secondary: #00E5A0;
  --secondary-rgb: 0, 229, 160;
  --accent: #FF7A1A;
  --accent-rgb: 255, 122, 26;
  --bg-deep: #060B14;
  --bg-panel: #0B1424;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-border-soft: rgba(255, 255, 255, 0.08);
  --text-main: #EAF0F6;
  --text-sub: #93A1B4;
  --text-dim: #5D6B80;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.35);
  --glow-primary: 0 0 28px rgba(var(--primary-rgb), 0.55);
  --glow-secondary: 0 0 22px rgba(var(--secondary-rgb), 0.4);
  --spacer-section: 80px;
  --container-width: 1200px;
  --font-main: "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Inter", "SFMono-Regular", Consolas, monospace;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; border: none; background: none; color: inherit; }
button { cursor: pointer; }
ul, ol { list-style: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: var(--spacer-section) 0; }
.section-head {
  margin-bottom: 40px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.3px;
  position: relative;
  padding-left: 16px;
}
.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: var(--primary);
}
.section-head h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
  margin-top: 8px;
}
.section-head p {
  color: var(--text-sub);
  font-size: 15px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
  user-select: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.3);
}
.btn-primary:hover {
  box-shadow: var(--glow-primary);
  transform: translateX(2px);
}
.btn-primary:active { transform: translateY(1px); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(var(--primary-rgb), 0.7);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(var(--primary-rgb), 0.12);
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.25);
}
.btn-light {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--text-main);
}
.btn-light:hover { background: rgba(255, 255, 255, 0.14); }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn .fa-spinner { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.btn.loading { opacity: 0.55; pointer-events: none; }
.btn:disabled { opacity: 0.4; pointer-events: none; box-shadow: none; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(6, 11, 20, 0.68);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(6, 11, 20, 0.92);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.header-top {
  height: 68px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 0 16px rgba(var(--primary-rgb), 0.4);
}
.logo-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-main);
  white-space: nowrap;
}
.logo-name span {
  color: var(--secondary);
  font-weight: 600;
  margin-left: 2px;
}
.header-search {
  flex: 1;
  max-width: 380px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 0 6px 0 16px;
  height: 40px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
}
.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
}
.header-search input::placeholder { color: var(--text-dim); }
.header-search button {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.2s ease;
  flex-shrink: 0;
}
.header-search button:hover { box-shadow: 0 0 14px rgba(var(--primary-rgb), 0.5); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}
.search-toggle { display: none; }
.header-nav {
  height: 52px;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.header-nav::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}
.nav-tab.active {
  color: #fff;
  background: rgba(var(--primary-rgb), 0.2);
  border-color: rgba(var(--primary-rgb), 0.5);
  box-shadow: 0 0 18px rgba(var(--primary-rgb), 0.2);
}
.nav-tab.active i { color: var(--secondary); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding-top: 150px;
  padding-bottom: 40px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(6, 11, 20, 0.96) 25%, rgba(6, 11, 20, 0.75) 60%, rgba(6, 11, 20, 0.4) 100%);
  z-index: 1;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 2;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 48px;
  min-height: 480px;
}
.hero-content { flex: 1.15; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(var(--secondary-rgb), 0.12);
  border: 1px solid rgba(var(--secondary-rgb), 0.35);
  color: var(--secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.8px;
  margin-bottom: 22px;
}
.hero-eyebrow i { font-size: 12px; }
.hero h1 {
  font-size: 36px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-main);
  margin-bottom: 16px;
}
.hero h1 .em {
  color: var(--secondary);
}
.hero-sub {
  font-size: 18px;
  font-weight: 600;
  color: rgba(234, 240, 246, 0.85);
  margin-bottom: 14px;
}
.hero-desc {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 560px;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-visual {
  flex: 0.85;
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-card-back {
  position: absolute;
  width: 280px;
  height: 200px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transform: rotate(-8deg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}
.hero-card-back img { width: 100%; height: 100%; object-fit: cover; border-radius: 20px; opacity: 0.4; }
.hero-card-front {
  position: absolute;
  width: 300px;
  height: 220px;
  border-radius: 20px;
  background: rgba(11, 20, 36, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform: rotate(5deg) translate(20px, 10px);
  box-shadow: var(--shadow-lg);
  padding: 20px;
  z-index: 2;
}
.hero-card-front .mini-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  background: rgba(var(--secondary-rgb), 0.12);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 14px;
}
.hero-card-front h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}
.hero-card-front p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
}
.hero-data {
  position: relative;
  z-index: 3;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.data-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  font-size: 14px;
  color: var(--text-sub);
}
.data-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 10px var(--secondary);
  flex-shrink: 0;
}
.data-badge .num {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-main);
}
.data-badge .highlight {
  font-family: var(--font-num);
  font-weight: 800;
  color: var(--secondary);
}

/* ===== Directory ===== */
.directory {
  background: var(--bg-panel);
  position: relative;
}
.directory .section-head h2::after { background: var(--secondary); }
.dir-list { display: flex; flex-direction: column; }
.dir-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-lg);
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}
.dir-row:last-child { border-bottom: none; }
.dir-row:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}
.dir-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(var(--primary-rgb), 0.7);
  width: 76px;
  text-align: center;
  flex-shrink: 0;
  line-height: 1;
}
.dir-row:hover .dir-num {
  color: rgba(var(--primary-rgb), 0.9);
  -webkit-text-stroke: 1.5px transparent;
  text-shadow: 0 0 24px rgba(var(--primary-rgb), 0.4);
  transition: all 0.3s ease;
}
.dir-cover {
  width: 92px;
  height: 64px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.dir-cover img { width: 100%; height: 100%; object-fit: cover; }
.dir-info { flex: 1; }
.dir-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}
.dir-info p {
  font-size: 14px;
  color: var(--text-sub);
  max-width: 560px;
}
.dir-arrow {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.dir-row:hover .dir-arrow {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 18px rgba(var(--primary-rgb), 0.4);
}

/* ===== Featured ===== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--primary-rgb), 0.55);
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.07);
}
.feature-card-large {
  grid-column: span 2;
}
.feature-card-small {
  grid-column: span 1;
}
.feature-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.feature-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.feature-card:hover .feature-cover img { transform: scale(1.04); }
.feature-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(6, 11, 20, 0.7) 100%);
}
.feature-pill {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  background: rgba(6, 11, 20, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(var(--secondary-rgb), 0.4);
  color: var(--secondary);
}
.feature-pill.orange {
  border-color: rgba(var(--accent-rgb), 0.5);
  color: var(--accent);
}
.feature-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.feature-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--text-main);
}
.feature-card-small .feature-body h3 { font-size: 17px; }
.feature-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feature-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-dim);
}
.feature-meta .cat {
  color: var(--secondary);
  font-weight: 600;
}
.feature-meta .date {
  font-family: var(--font-num);
  letter-spacing: 0.3px;
}

/* ===== Scroll row ===== */
.scroll-wrap { position: relative; }
.scroll-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.scroll-controls {
  display: flex;
  gap: 8px;
}
.scroll-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  transition: all 0.25s ease;
}
.scroll-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 14px rgba(var(--primary-rgb), 0.4);
}
.scroll-row {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: none;
  padding-bottom: 10px;
}
.scroll-row::-webkit-scrollbar { display: none; }
.scroll-card {
  flex: 0 0 260px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.scroll-card:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--secondary-rgb), 0.5);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}
.scroll-card .thumb {
  width: 100%;
  height: 136px;
  overflow: hidden;
  position: relative;
}
.scroll-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.scroll-card:hover .thumb img { transform: scale(1.05); }
.scroll-card .thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(6, 11, 20, 0.6));
}
.scroll-card .body { padding: 16px 16px 18px; }
.scroll-card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  background: rgba(var(--secondary-rgb), 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}
.scroll-card h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
}

/* ===== CTA panel ===== */
.cta-panel {
  position: relative;
  overflow: hidden;
  padding: 70px 0;
  background: linear-gradient(120deg, rgba(var(--primary-rgb), 0.25), rgba(var(--secondary-rgb), 0.12)), var(--bg-panel);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.cta-panel::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(var(--primary-rgb), 0.15);
  filter: blur(80px);
  top: -100px;
  right: -80px;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-doodle {
  width: 110px;
  height: 110px;
  border: 2px solid rgba(var(--secondary-rgb), 0.5);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex-shrink: 0;
  background: rgba(var(--secondary-rgb), 0.06);
}
.cta-doodle i {
  font-size: 34px;
  color: var(--secondary);
}
.cta-doodle::after {
  content: "";
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 1px dashed rgba(var(--secondary-rgb), 0.3);
  animation: spinSlow 16s linear infinite;
}
@keyframes spinSlow { to { transform: rotate(360deg); } }
.cta-content { flex: 1; min-width: 260px; }
.cta-content h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-content p {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 24px;
}
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ===== News section ===== */
.news-section { background: var(--bg-deep); }
.news-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
}
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-card {
  display: flex;
  align-items: stretch;
  gap: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: all 0.3s ease;
}
.news-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(var(--primary-rgb), 0.4);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
}
.news-thumb {
  width: 200px;
  min-height: 118px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 118px;
}
.news-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.pill {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  background: rgba(var(--primary-rgb), 0.18);
  border: 1px solid rgba(var(--primary-rgb), 0.3);
  color: #9cc0ff;
}
.pill.green {
  background: rgba(var(--secondary-rgb), 0.14);
  border-color: rgba(var(--secondary-rgb), 0.35);
  color: var(--secondary);
}
.pill.orange {
  background: rgba(var(--accent-rgb), 0.15);
  border-color: rgba(var(--accent-rgb), 0.35);
  color: var(--accent);
}
.news-time {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-dim);
}
.news-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 6px;
  color: var(--text-main);
}
.news-card:hover .news-body h3 { color: var(--secondary); }
.news-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: auto;
}
.news-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  border: 1px dashed rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
  text-align: center;
}
.news-empty i {
  font-size: 40px;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.news-empty p {
  font-size: 16px;
  color: var(--text-sub);
  margin-bottom: 20px;
}
.news-side { display: flex; flex-direction: column; gap: 24px; }
.side-panel {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.side-panel h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-left: 12px;
  position: relative;
}
.side-panel h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  border-radius: 3px;
  background: var(--secondary);
}
.side-panel ul li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 6px;
  font-size: 14px;
  color: var(--text-sub);
  border-radius: 8px;
  transition: all 0.2s ease;
}
.side-panel ul li a:hover,
.side-panel ul li.active a {
  color: var(--text-main);
  background: rgba(var(--primary-rgb), 0.1);
  padding-left: 12px;
}
.side-panel ul li a .count {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-dim);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-cloud span {
  padding: 6px 14px;
  font-size: 13px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.25s ease;
}
.tag-cloud span:hover {
  background: rgba(var(--secondary-rgb), 0.12);
  border-color: rgba(var(--secondary-rgb), 0.4);
  color: var(--secondary);
}
.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

/* ===== FAQ ===== */
.faq-section { background: var(--bg-panel); }
.faq-wrap { max-width: 860px; }
.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item.open {
  border-color: rgba(var(--primary-rgb), 0.45);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: color 0.2s ease;
}
.faq-q i {
  color: var(--text-dim);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-q {
  color: var(--secondary);
}
.faq-item.open .faq-q i {
  transform: rotate(90deg);
  color: var(--secondary);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-bottom: 20px;
}
.faq-a p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding-top: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: #04070D;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand {
  padding: 50px 0 36px;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-brand .logo-name { font-size: 22px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  max-width: 480px;
  margin: 14px auto 0;
}
.footer-social {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 15px;
  transition: all 0.25s ease;
}
.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 14px rgba(var(--primary-rgb), 0.4);
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  padding: 40px 0;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.2s ease;
}
.footer-col ul li a:hover {
  color: var(--secondary);
}
.footer-bottom {
  padding: 20px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
}
.footer-bottom .site-domain {
  font-family: var(--font-num);
  color: #738196;
  margin: 0 4px;
}

/* ===== Back to top ===== */
.back-top {
  position: fixed;
  right: 28px;
  bottom: 32px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(11, 20, 36, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(10px);
  color: var(--text-main);
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: all 0.3s ease;
  opacity: 0;
  pointer-events: none;
}
.back-top.show {
  opacity: 1;
  pointer-events: auto;
}
.back-top:hover {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root { --spacer-section: 64px; }
  .hero-inner { flex-direction: column; gap: 32px; }
  .hero-visual { min-height: 300px; width: 100%; }
  .hero-card-back { left: 10%; }
  .hero-card-front { right: 10%; }
  .news-layout { grid-template-columns: 1fr; }
  .news-side { flex-direction: row; flex-wrap: wrap; }
  .side-panel { flex: 1; min-width: 220px; }
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card-large, .feature-card-small { grid-column: span 1; }
  .feature-card-large:nth-child(1) { grid-column: span 2; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --spacer-section: 48px; }
  .container { padding: 0 16px; }
  .header-top { gap: 12px; height: 62px; }
  .header-search { display: none; position: absolute; top: 62px; left: 16px; right: 16px; max-width: none; background: rgba(11, 20, 36, 0.97); z-index: 10; }
  .header-search.mobile-open { display: flex; }
  .search-toggle { display: inline-flex; width: 38px; height: 38px; border-radius: 50%; align-items: center; justify-content: center; color: var(--text-sub); background: rgba(255, 255, 255, 0.06); font-size: 15px; }
  .header-actions .btn .btn-text-mobile { display: none; }
  .header-actions .btn { padding: 10px 12px; }
  .header-nav { height: 48px; }
  .nav-tab { padding: 8px 16px; font-size: 13px; }
  .hero { padding-top: 128px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 16px; }
  .hero-data { gap: 10px; }
  .data-badge { padding: 8px 14px; font-size: 13px; flex-wrap: wrap; }
  .dir-row { padding: 22px 12px; gap: 14px; }
  .dir-num { font-size: 32px; width: 50px; }
  .dir-cover { width: 68px; height: 50px; }
  .dir-info h3 { font-size: 17px; }
  .dir-info p { font-size: 13px; }
  .featured-grid { grid-template-columns: 1fr; }
  .feature-card-large:nth-child(1) { grid-column: span 1; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 14px; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; min-height: 150px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-content h2 { font-size: 24px; }
  .cta-actions { justify-content: center; }
  .scroll-card { flex: 0 0 220px; }
  .back-top { right: 16px; bottom: 20px; width: 40px; height: 40px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
  .hero-card-back { left: 4%; width: 230px; height: 170px; }
  .hero-card-front { right: 4%; width: 250px; height: 190px; }
  .header-actions .btn span { display: none; }
}
@media (max-width: 520px) {
  .header-actions .btn .btn-text-mobile { display: none; }
  .logo-name { font-size: 17px; }
  .logo-badge { width: 32px; height: 32px; font-size: 15px; }
  .hero { padding-top: 118px; }
  .hero h1 { font-size: 24px; }
  .hero-desc { font-size: 14px; }
  .hero-actions .btn { padding: 12px 18px; font-size: 14px; }
  .hero-card-back { display: none; }
  .hero-card-front { right: auto; left: 50%; transform: translateX(-50%) rotate(3deg); width: 220px; height: 170px; }
  .dir-cover { display: none; }
  .dir-num { width: 46px; }
  .news-thumb { min-height: 130px; }
  .side-panel { min-width: 100%; }
  .footer-links { grid-template-columns: 1fr; }
}

/* roulang page: category1 */
:root {
  --primary: #1B6CFF;
  --primary-light: #4A8DFF;
  --primary-glow: rgba(27, 108, 255, 0.45);
  --accent: #00E5A0;
  --accent-glow: rgba(0, 229, 160, 0.35);
  --signal: #FF7A1A;
  --bg-deep: #060B14;
  --bg-panel: #0B1424;
  --bg-panel-2: #0E1A2C;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-bg-hover: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-hover: rgba(27, 108, 255, 0.45);
  --text-main: #EAF0F6;
  --text-sub: #93A1B4;
  --text-dim: #5D6B80;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
  --font-main: "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "DIN Alternate", "Inter", monospace;
  --gap-section: 80px;
  --gap-section-mobile: 48px;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse at 70% -10%, rgba(27, 108, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 30% 30%, rgba(0, 229, 160, 0.03) 0%, transparent 40%);
  background-attachment: fixed;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
}

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(6, 11, 20, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(6, 11, 20, 0.92);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  border-bottom-color: rgba(27, 108, 255, 0.15);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 24px;
}

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

.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #0A3F9E);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 0 18px rgba(27, 108, 255, 0.35);
}

.logo-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  line-height: 1.2;
  white-space: nowrap;
}

.logo-name small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-sub);
  letter-spacing: 1px;
}

.header-search {
  flex: 1;
  max-width: 380px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  padding: 4px 4px 4px 18px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(27, 108, 255, 0.2);
}

.header-search input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  min-width: 0;
}

.header-search input::placeholder {
  color: var(--text-dim);
}

.header-search button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.3s ease;
}

.header-search button:hover {
  box-shadow: 0 0 16px rgba(27, 108, 255, 0.5);
}

.search-toggle,
.mobile-fav {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  font-size: 16px;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.search-toggle:hover,
.mobile-fav:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--primary);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 20px;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1.4;
}

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

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(27, 108, 255, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 0 28px rgba(27, 108, 255, 0.55);
  transform: translateY(-2px);
}

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

.btn-ghost {
  background: transparent;
  border-color: rgba(27, 108, 255, 0.4);
  color: var(--primary-light);
}

.btn-ghost:hover {
  background: rgba(27, 108, 255, 0.1);
  border-color: var(--primary);
  color: #fff;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.header-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 24px 10px;
}

.header-nav::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 0.3s ease;
}

.nav-tab:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.nav-tab.active {
  background: rgba(27, 108, 255, 0.15);
  border-color: rgba(27, 108, 255, 0.5);
  color: #fff;
  box-shadow: 0 0 16px rgba(27, 108, 255, 0.15);
}

.nav-tab i {
  font-size: 13px;
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 40px 0 0;
  overflow: hidden;
}

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

.breadcrumb a {
  color: var(--text-sub);
  transition: color 0.3s;
}

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

.breadcrumb .current {
  color: var(--text-main);
  font-weight: 600;
}

.hero-cover-card {
  position: relative;
  min-height: 460px;
  border-radius: 24px;
  overflow: hidden;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
}

.hero-figure {
  position: absolute;
  top: 0;
  right: 0;
  width: 48%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(6, 11, 20, 0.96) 30%, rgba(6, 11, 20, 0.76) 55%, rgba(27, 108, 255, 0.08) 100%);
  z-index: 1;
}

.cover-content {
  position: relative;
  z-index: 2;
  padding: 60px 48px;
  max-width: 620px;
}

.cover-content h1 {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: 0.5px;
  line-height: 1.25;
  margin-bottom: 18px;
  position: relative;
  padding-left: 18px;
}

.cover-content h1::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 4px;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(27, 108, 255, 0.6);
}

.cover-content .lead {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 30px;
}

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

.cover-stats {
  position: absolute;
  right: 24px;
  bottom: 24px;
  z-index: 3;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(11, 20, 36, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.stat-chip .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.stat-chip .mono {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
}

/* ===== Section base ===== */
.section {
  padding: var(--gap-section) 0;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  position: relative;
  padding-bottom: 12px;
}

.section-header h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(27, 108, 255, 0.5);
}

.section-header .section-note {
  font-size: 14px;
  color: var(--text-dim);
}

/* ===== Entry List ===== */
.entry-section {
  padding-top: 80px;
}

.entry-panel {
  border-radius: 20px;
  background: rgba(11, 20, 36, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.entry-row {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 24px 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0;
  transition: all 0.3s ease;
  position: relative;
}

.entry-row:last-child {
  border-bottom: none;
}

.entry-row:hover {
  background: rgba(255, 255, 255, 0.05);
  padding-left: 36px;
}

.entry-index {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.65;
  min-width: 70px;
  line-height: 1;
  letter-spacing: 1px;
}

.entry-body {
  flex: 1;
  min-width: 0;
}

.entry-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--text-main);
  transition: color 0.3s;
}

.entry-row:hover .entry-body h3 {
  color: var(--primary-light);
}

.entry-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  margin: 0;
}

.entry-meta {
  flex-shrink: 0;
}

.time-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: var(--text-sub);
  font-family: var(--font-mono);
}

.time-chip i {
  color: var(--accent);
}

.entry-link {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-sub);
  font-size: 16px;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.entry-row:hover .entry-link {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 20px rgba(27, 108, 255, 0.4);
  transform: rotate(-45deg);
}

/* ===== Features ===== */
.features-section {
  background: linear-gradient(180deg, transparent, rgba(11, 20, 36, 0.5), transparent);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(27, 108, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(27, 108, 255, 0.12);
  border: 1px solid rgba(27, 108, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary-light);
  margin-bottom: 18px;
}

.feature-card:nth-child(2) .feature-icon {
  background: rgba(0, 229, 160, 0.1);
  border-color: rgba(0, 229, 160, 0.25);
  color: var(--accent);
}

.feature-card:nth-child(3) .feature-icon {
  background: rgba(255, 122, 26, 0.1);
  border-color: rgba(255, 122, 26, 0.2);
  color: var(--signal);
}

.feature-card:nth-child(4) .feature-icon {
  background: rgba(27, 108, 255, 0.08);
  border-color: rgba(27, 108, 255, 0.15);
  color: var(--primary-light);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  margin: 0;
}

/* ===== Steps ===== */
.steps-section {
  background: rgba(6, 11, 20, 0.5);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step;
}

.step-card {
  position: relative;
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent);
  transition: height 0.4s ease;
}

.step-card:hover::before {
  height: 100%;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 160, 0.3);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 14px;
  display: block;
}

.step-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin: 0;
}

/* ===== Recommend ===== */
.recommend-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.recommend-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: flex-end;
  transition: all 0.3s ease;
}

.recommend-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.recommend-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 11, 20, 0.1) 0%, rgba(6, 11, 20, 0.6) 70%, rgba(6, 11, 20, 0.9) 100%);
  z-index: 1;
}

.recommend-card:hover img {
  transform: scale(1.05);
}

.recommend-card:hover {
  border-color: rgba(27, 108, 255, 0.4);
  box-shadow: var(--shadow-hover);
}

.recommend-info {
  position: relative;
  z-index: 2;
  padding: 24px;
  width: 100%;
}

.recommend-info h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.recommend-info p {
  font-size: 13px;
  color: rgba(234, 240, 246, 0.75);
  line-height: 1.6;
  margin: 0 0 12px;
}

.recommend-info .btn {
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 8px;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 40%, rgba(27, 108, 255, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 70%, rgba(0, 229, 160, 0.1) 0%, transparent 40%),
    var(--bg-panel);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 80px 60px;
  text-align: center;
}

.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.cta-section p {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 600px;
  margin: 0 auto 38px;
  line-height: 1.8;
}

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

/* ===== FAQ ===== */
.faq-section {
  background: linear-gradient(180deg, transparent, rgba(11, 20, 36, 0.4), transparent);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.faq-item.active {
  border-color: rgba(27, 108, 255, 0.3);
  background: rgba(255, 255, 255, 0.06);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  text-align: left;
  color: var(--text-main);
  transition: color 0.3s;
}

.faq-item.active .faq-question {
  color: var(--primary-light);
}

.faq-question .faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  transition: all 0.4s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(90deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  border-left: 2px solid rgba(27, 108, 255, 0.4);
  padding-left: 16px;
}

/* ===== Back to Top ===== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  font-size: 16px;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: all 0.4s ease;
}

.back-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top:hover {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 24px rgba(27, 108, 255, 0.4);
}

/* ===== Footer ===== */
.site-footer {
  background: #040810;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 70px 0 30px;
  margin-top: 40px;
}

.site-footer .container {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 50px;
}

.footer-brand .logo {
  justify-content: center;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  text-align: center;
  line-height: 1.7;
  max-width: 300px;
  margin: 0 auto 20px;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 15px;
  transition: all 0.3s;
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 16px rgba(27, 108, 255, 0.3);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.3s, padding-left 0.3s;
}

.footer-col a:hover {
  color: var(--primary-light);
  padding-left: 6px;
}

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
  color: var(--text-dim);
}

.footer-bottom .site-domain {
  font-family: var(--font-mono);
  color: var(--text-sub);
}

/* ===== Empty state ===== */
.empty-state {
  text-align: center;
  padding: 60px 30px;
  color: var(--text-dim);
}

.empty-state i {
  font-size: 40px;
  margin-bottom: 16px;
  color: var(--text-dim);
}

.empty-state p {
  margin-bottom: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero-cover-card {
    min-height: 400px;
  }

  .hero-figure {
    width: 45%;
    opacity: 0.5;
  }

  .cover-content {
    padding: 48px 40px;
    max-width: 560px;
  }

  .cover-content h1 {
    font-size: 36px;
  }

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

  .cta-section {
    padding: 60px 32px;
  }

  .site-footer .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .header-top {
    padding: 12px 16px;
    gap: 12px;
  }

  .header-search {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-width: none;
    background: rgba(6, 11, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0;
    padding: 12px 16px;
    backdrop-filter: blur(14px);
    z-index: 100;
  }

  .header-search.mobile-open {
    display: flex;
  }

  .header-search button {
    border-radius: var(--radius-md);
    flex-shrink: 0;
  }

  .search-toggle,
  .mobile-fav {
    display: inline-flex;
  }

  .header-actions {
    display: none;
  }

  .header-nav {
    padding: 0 16px 8px;
  }

  .nav-tab {
    padding: 8px 14px;
    font-size: 13px;
  }

  .page-hero {
    padding-top: 24px;
  }

  .hero-cover-card {
    min-height: 520px;
    align-items: flex-start;
  }

  .hero-figure {
    width: 100%;
    height: 45%;
    top: auto;
    bottom: 0;
    opacity: 0.45;
  }

  .cover-overlay {
    background: linear-gradient(180deg, rgba(6, 11, 20, 0.9) 30%, rgba(6, 11, 20, 0.7) 60%, rgba(6, 11, 20, 0.3) 100%);
  }

  .cover-content {
    padding: 40px 24px;
  }

  .cover-content h1 {
    font-size: 30px;
  }

  .cover-content .lead {
    font-size: 14px;
    margin-bottom: 22px;
  }

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

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

  .cover-stats {
    position: relative;
    right: auto;
    bottom: auto;
    justify-content: flex-start;
    padding: 0 24px 20px;
    flex-wrap: wrap;
  }

  .section {
    padding: var(--gap-section-mobile) 0;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 28px;
    gap: 8px;
  }

  .section-header h2 {
    font-size: 26px;
  }

  .entry-section {
    padding-top: 48px;
  }

  .entry-row {
    flex-wrap: wrap;
    gap: 12px;
    padding: 18px 20px;
  }

  .entry-row:hover {
    padding-left: 20px;
  }

  .entry-index {
    font-size: 28px;
    min-width: 50px;
  }

  .entry-body {
    width: calc(100% - 80px);
    flex: none;
  }

  .entry-body h3 {
    font-size: 18px;
  }

  .entry-body p {
    font-size: 13px;
  }

  .entry-meta {
    order: 3;
    margin-left: 50px;
  }

  .entry-link {
    margin-left: auto;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 22px;
  }

  .cta-section {
    padding: 50px 24px;
    border-radius: 16px;
  }

  .cta-section h2 {
    font-size: 26px;
  }

  .cta-actions {
    flex-direction: column;
  }

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

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

  .back-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

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

  .footer-bottom {
    font-size: 12px;
  }

  .time-chip {
    font-size: 12px;
    padding: 5px 10px;
  }

  .entry-body {
    width: 100%;
  }

  .entry-meta {
    margin-left: 50px;
  }

  .entry-link {
    display: none;
  }
}

/* roulang page: article */
:root{
  --primary:#1B6CFF;
  --secondary:#00E5A0;
  --accent:#FF7A1A;
  --bg:#060B14;
  --bg-soft:#0B1424;
  --glass:rgba(255,255,255,0.06);
  --glass-strong:rgba(255,255,255,0.10);
  --border:rgba(255,255,255,0.14);
  --border-light:rgba(255,255,255,0.08);
  --text:#EAF0F6;
  --text-secondary:#93A1B4;
  --text-muted:#5D6B80;
  --radius:16px;
  --radius-sm:12px;
  --radius-full:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,0.25);
  --shadow-hover:0 16px 40px rgba(0,0,0,0.35);
  --glow-primary:0 0 24px rgba(27,108,255,0.5);
  --glow-secondary:0 0 20px rgba(0,229,160,0.35);
  --font-family:'Inter','HarmonyOS Sans','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --font-mono:'DIN Alternate','Roboto Mono','SFMono-Regular',Consolas,monospace;
  --container:1200px;
  --space-section:80px;
  --space-mobile:48px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-family);
  background:var(--bg);
  background-image:
    radial-gradient(ellipse at 20% -10%,rgba(27,108,255,0.16),transparent 55%),
    radial-gradient(ellipse at 85% 110%,rgba(0,229,160,0.07),transparent 50%);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text);text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:inherit;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.section{padding:var(--space-section) 0;}
.section-header{margin-bottom:40px;}
.section-header h2{
  font-size:28px;font-weight:700;line-height:1.35;letter-spacing:.5px;position:relative;padding-left:14px;
}
.section-header h2::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--primary);box-shadow:var(--glow-primary);
}
.section-header.center h2::before{display:none;}
.section-header.center{text-align:center;}
.section-header.center h2{padding-left:0;}
.section-header p{color:var(--text-secondary);font-size:15px;margin-top:8px;line-height:1.6;}
.section-header .section-sub{color:var(--text-muted);font-size:14px;letter-spacing:1px;text-transform:uppercase;margin-bottom:6px;display:block;}
/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);
  font-weight:600;font-size:15px;line-height:1;
  transition:all .3s ease;white-space:nowrap;border:1px solid transparent;
}
.btn i{font-size:15px;}
.btn-primary{
  background:var(--primary);color:#fff;box-shadow:0 4px 18px rgba(27,108,255,0.35);
}
.btn-primary:hover{
  background:#2a7AFF;transform:translateX(2px);box-shadow:var(--glow-primary);
}
.btn-primary:active{transform:translateY(1px) translateX(2px);}
.btn-ghost{
  background:rgba(255,255,255,0.04);border-color:rgba(27,108,255,0.6);color:var(--text);
}
.btn-ghost:hover{
  background:rgba(27,108,255,0.12);border-color:var(--primary);color:#fff;box-shadow:0 0 18px rgba(27,108,255,0.2);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled],.btn.disabled{opacity:.4;pointer-events:none;box-shadow:none;}
/* ===== Badges ===== */
.badge{
  display:inline-flex;align-items:center;gap:5px;padding:4px 12px;
  border-radius:var(--radius-full);font-size:12px;font-weight:600;letter-spacing:.4px;
  background:rgba(255,255,255,0.08);color:var(--text-secondary);border:1px solid rgba(255,255,255,0.12);
}
.badge-primary{background:rgba(27,108,255,0.15);color:#7BA8FF;border-color:rgba(27,108,255,0.3);}
.badge-cyan{background:rgba(0,229,160,0.12);color:var(--secondary);border-color:rgba(0,229,160,0.25);}
.badge-orange{background:rgba(255,122,26,0.12);color:var(--accent);border-color:rgba(255,122,26,0.3);}
.badge i{font-size:10px;}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(6,11,20,0.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border-light);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(6,11,20,0.94);box-shadow:0 8px 30px rgba(0,0,0,0.3);}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 24px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-badge{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),#0f3d8a);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;box-shadow:0 0 16px rgba(27,108,255,0.4);
}
.logo-name{font-size:20px;font-weight:800;letter-spacing:.5px;line-height:1.1;color:var(--text);white-space:nowrap;}
.logo-name small{display:block;font-size:11px;font-weight:500;color:var(--text-muted);letter-spacing:1px;margin-top:2px;}
.header-search{
  display:flex;align-items:center;flex:1;max-width:380px;margin:0 auto;
  background:rgba(255,255,255,0.07);border:1px solid var(--border-light);
  border-radius:var(--radius-full);padding:4px 4px 4px 18px;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.header-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,108,255,0.15);}
.header-search input{
  flex:1;background:none;border:none;outline:none;color:var(--text);
  font-size:14px;padding:8px 0;
}
.header-search input::placeholder{color:var(--text-muted);}
.header-search button{
  width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  transition:background .3s ease,box-shadow .3s ease;
}
.header-search button:hover{background:#2a7AFF;box-shadow:var(--glow-primary);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.search-toggle{display:none;width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,0.06);align-items:center;justify-content:center;color:var(--text);}
.header-nav{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding:8px 24px 10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.header-nav::-webkit-scrollbar{display:none;}
.nav-tab{
  display:inline-flex;align-items:center;gap:7px;padding:8px 18px;border-radius:var(--radius-full);
  color:var(--text-secondary);font-size:14px;font-weight:500;white-space:nowrap;
  border:1px solid transparent;transition:all .3s ease;
}
.nav-tab i{font-size:14px;opacity:.8;}
.nav-tab:hover{background:rgba(255,255,255,0.08);color:var(--text);}
.nav-tab.active{background:rgba(27,108,255,0.18);border-color:rgba(27,108,255,0.55);color:#fff;box-shadow:0 0 14px rgba(27,108,255,0.2);}
/* ===== Article Section ===== */
.article-section{padding:48px 0 var(--space-section);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) minmax(0,300px);
  gap:48px;align-items:start;justify-content:center;
}
/* Breadcrumb */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-secondary);transition:color .2s;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .crumb-sep{color:var(--text-muted);opacity:.5;}
.breadcrumb .current{color:var(--text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:220px;}
/* Article Body */
.article-body{
  background:rgba(255,255,255,0.03);
  border:1px solid var(--border-light);
  border-radius:calc(var(--radius) + 4px);
  padding:36px 38px 44px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.article-body::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary),transparent);
  opacity:.7;
}
.article-title{
  font-size:32px;font-weight:800;line-height:1.35;letter-spacing:.5px;
  margin-bottom:16px;color:var(--text);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:28px;
  padding-bottom:22px;border-bottom:1px solid var(--border-light);
  font-size:14px;color:var(--text-muted);
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item i{color:var(--primary);font-size:13px;}
.meta-item .meta-time{font-family:var(--font-mono);font-weight:600;color:var(--secondary);}
/* Article Content */
.article-content{font-size:17px;line-height:1.9;color:var(--text);word-wrap:break-word;}
.article-content h2{
  font-size:24px;font-weight:700;margin:36px 0 16px;padding-left:14px;position:relative;line-height:1.4;
}
.article-content h2::before{content:'';position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;background:var(--primary);}
.article-content h3{font-size:20px;font-weight:600;margin:28px 0 12px;line-height:1.4;}
.article-content p{margin:0 0 18px;color:#CBD5E1;}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:22px;}
.article-content ul li{list-style:disc;margin-bottom:8px;color:#CBD5E1;}
.article-content ol li{list-style:decimal;margin-bottom:8px;color:#CBD5E1;}
.article-content blockquote{
  margin:24px 0;padding:18px 22px;border-left:4px solid var(--primary);
  background:rgba(27,108,255,0.08);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-secondary);font-size:16px;line-height:1.8;
}
.article-content img{border-radius:var(--radius-sm);margin:24px auto;box-shadow:var(--shadow-card);}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;line-height:1.6;}
.article-content th,.article-content td{padding:12px 14px;border:1px solid var(--border-light);text-align:left;}
.article-content th{background:rgba(255,255,255,0.06);font-weight:600;color:var(--text);}
.article-content td{color:var(--text-secondary);}
.article-content pre{
  background:#0b1220;border:1px solid var(--border-light);border-radius:var(--radius-sm);
  padding:18px;overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7;margin:24px 0;color:#B8C7D9;
}
.article-content code{font-family:var(--font-mono);font-size:14px;background:rgba(255,255,255,0.08);padding:2px 7px;border-radius:6px;color:var(--secondary);}
.article-content pre code{background:none;padding:0;color:inherit;}
/* Article Pager */
.article-pager{
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:38px;padding-top:26px;border-top:1px solid var(--border-light);
}
/* Empty State */
.article-empty{
  text-align:center;padding:70px 30px;
}
.article-empty i{font-size:52px;color:var(--text-muted);margin-bottom:20px;display:inline-block;opacity:.5;}
.article-empty h1{font-size:24px;font-weight:700;margin-bottom:12px;color:var(--text);}
.article-empty p{color:var(--text-secondary);margin-bottom:24px;font-size:15px;}
/* Sidebar */
.article-sidebar{display:flex;flex-direction:column;gap:24px;}
.sidebar-card{
  background:var(--glass);border:1px solid var(--border-light);
  border-radius:var(--radius);padding:22px;backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-card);
}
.sidebar-card h3{
  font-size:16px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;
  margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border-light);
}
.sidebar-card h3 i{color:var(--primary);font-size:15px;}
.toc-card{position:sticky;top:130px;}
.toc-card ul li{margin-bottom:4px;}
.toc-card ul li a{
  display:block;padding:7px 12px;border-radius:8px;font-size:14px;color:var(--text-secondary);
  border-left:2px solid transparent;transition:all .25s ease;line-height:1.4;
}
.toc-card ul li a.toc-sub{padding-left:24px;font-size:13px;}
.toc-card ul li a:hover{background:rgba(255,255,255,0.06);color:var(--text);}
.toc-card ul li a.active{color:var(--primary);border-left-color:var(--primary);background:rgba(27,108,255,0.1);}
.sidebar-posts li{margin-bottom:14px;}
.sidebar-posts li:last-child{margin-bottom:0;}
.sidebar-posts a{
  display:flex;align-items:center;gap:12px;padding:8px;border-radius:var(--radius-sm);
  transition:background .25s ease;
}
.sidebar-posts a:hover{background:rgba(255,255,255,0.06);}
.sidebar-posts img{width:56px;height:56px;object-fit:cover;border-radius:10px;flex-shrink:0;}
.sidebar-posts .post-info{min-width:0;}
.sidebar-posts strong{display:block;font-size:14px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sidebar-posts span{display:block;font-size:12px;color:var(--text-muted);margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sidebar-actions{display:flex;flex-direction:column;gap:10px;}
/* ===== Related Section ===== */
.related-section{padding:0 0 var(--space-section);}
.related-grid{
  display:grid;grid-template-columns:1.2fr .8fr;grid-template-rows:repeat(2,1fr);gap:24px;
}
.related-card{
  position:relative;display:flex;background:var(--glass);
  border:1px solid var(--border-light);border-radius:var(--radius);overflow:hidden;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
  min-height:180px;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(27,108,255,0.5);}
.related-card img{width:42%;object-fit:cover;flex-shrink:0;}
.related-featured{grid-row:span 2;min-height:380px;flex-direction:row;}
.related-featured img{width:55%;}
.related-info{
  padding:24px;display:flex;flex-direction:column;justify-content:center;gap:10px;flex:1;min-width:0;
}
.related-info h3{font-size:18px;font-weight:700;line-height:1.4;color:var(--text);}
.related-card:not(.related-featured) .related-info{padding:16px;}
.related-card:not(.related-featured) .related-info h3{font-size:16px;line-height:1.35;}
.related-info p{font-size:14px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-link{font-size:13px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;margin-top:4px;}
.related-link i{transition:transform .25s ease;}
.related-card:hover .related-link i{transform:translateX(4px);}
/* ===== FAQ Section ===== */
.faq-section{padding:0 0 var(--space-section);}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px;}
.faq-item{
  background:var(--glass);border:1px solid var(--border-light);border-radius:var(--radius);
  overflow:hidden;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:border-color .3s ease,box-shadow .3s ease;
}
.faq-item.active{border-color:rgba(27,108,255,0.4);box-shadow:0 8px 30px rgba(0,0,0,0.25);}
.faq-item h3 button{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
  text-align:left;transition:color .3s ease;
}
.faq-item h3 button i{color:var(--text-muted);font-size:14px;transition:transform .35s ease,color .3s ease;flex-shrink:0;}
.faq-item.active h3 button{color:var(--primary);}
.faq-item.active h3 button i{transform:rotate(90deg);color:var(--primary);}
.faq-answer{display:none;padding:0 22px 20px;color:var(--text-secondary);font-size:15px;line-height:1.8;}
.faq-item.active .faq-answer{display:block;animation:fadeIn .35s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}
/* ===== CTA Section ===== */
.cta-section{padding:0 0 var(--space-section);}
.cta-box{
  position:relative;display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  background:linear-gradient(135deg,rgba(27,108,255,0.18),rgba(0,229,160,0.07));
  border:1px solid rgba(27,108,255,0.3);border-radius:calc(var(--radius) + 4px);
  padding:38px 42px;overflow:hidden;
}
.cta-box::before{
  content:'';position:absolute;top:-60%;right:-20%;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,160,0.12),transparent 70%);pointer-events:none;
}
.cta-icon{
  width:60px;height:60px;border-radius:16px;flex-shrink:0;
  background:rgba(27,108,255,0.2);border:1px dashed rgba(27,108,255,0.5);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:24px;
}
.cta-box h2{font-size:24px;font-weight:700;color:var(--text);line-height:1.3;}
.cta-box p{font-size:14px;color:var(--text-secondary);margin-top:6px;line-height:1.6;}
.cta-buttons{display:flex;gap:12px;margin-left:auto;flex-wrap:wrap;}
/* ===== Footer ===== */
.site-footer{
  background:#04070D;
  border-top:1px solid var(--border-light);
  padding:48px 0 0;
}
.site-footer .container{display:flex;flex-direction:column;}
.footer-brand{
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding-bottom:30px;border-bottom:1px solid var(--border-light);margin-bottom:30px;
}
.footer-brand p{font-size:14px;color:var(--text-muted);max-width:480px;line-height:1.7;}
.footer-social{display:flex;gap:10px;margin-top:4px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.05);border:1px solid var(--border-light);color:var(--text-secondary);
  transition:all .3s ease;font-size:14px;
}
.footer-social a:hover{background:rgba(27,108,255,0.15);border-color:var(--primary);color:var(--primary);box-shadow:var(--glow-primary);}
.footer-links{
  display:grid;grid-template-columns:repeat(4,1fr);gap:30px;
  padding-bottom:30px;border-bottom:1px solid var(--border-light);margin-bottom:20px;
}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;letter-spacing:.3px;}
.footer-col ul li{margin-bottom:8px;}
.footer-col ul li a{font-size:14px;color:var(--text-secondary);transition:color .25s ease,padding-left .25s ease;}
.footer-col ul li a:hover{color:var(--primary);padding-left:4px;}
.footer-bottom{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;padding:18px 0 24px;font-size:13px;color:var(--text-muted);}
.footer-bottom .site-domain{font-family:var(--font-mono);font-weight:600;color:var(--text-secondary);}
/* ===== Responsive ===== */
@media (max-width:1024px){
  .header-top{padding:12px 20px;}
  .header-nav{padding:8px 20px 10px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-sidebar{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
  .toc-card{position:static;}
  .related-grid{grid-template-columns:1fr;grid-template-rows:auto;}
  .related-featured{grid-row:auto;min-height:200px;}
  .cta-box{padding:32px 28px;}
  .cta-buttons{margin-left:0;}
}
@media (max-width:768px){
  :root{--space-section:48px;}
  .container{padding:0 16px;}
  .header-top{flex-wrap:wrap;position:relative;}
  .header-search{
    display:none;position:absolute;top:calc(100% + 6px);left:16px;right:16px;z-index:100;
    max-width:none;background:rgba(11,20,36,0.95);padding:6px 6px 6px 16px;
  }
  .header-search.open{display:flex;}
  .search-toggle{display:flex;}
  .header-actions .btn span{display:none;}
  .header-actions .btn{padding:10px 12px;}
  .header-actions .btn i{font-size:15px;}
  .header-actions .btn-ghost{background:transparent;border-color:transparent;}
  .header-nav{padding:8px 16px 10px;}
  .nav-tab{padding:7px 14px;font-size:13px;}
  .article-section{padding:24px 0 var(--space-mobile);}
  .article-body{padding:24px 20px 30px;}
  .article-title{font-size:24px;}
  .article-content{font-size:16px;}
  .article-content h2{font-size:20px;}
  .article-content h3{font-size:18px;}
  .article-pager{flex-direction:column;align-items:stretch;}
  .article-pager .btn{width:100%;}
  .article-sidebar{grid-template-columns:1fr;}
  .sidebar-posts a{align-items:flex-start;}
  .sidebar-posts img{width:64px;height:64px;}
  .related-card{flex-direction:column;min-height:0;}
  .related-card img{width:100%;height:140px;}
  .related-featured{min-height:0;}
  .related-featured img{width:100%;height:180px;}
  .related-info{padding:16px;}
  .cta-box{flex-direction:column;text-align:center;padding:30px 20px;}
  .cta-icon{margin:0 auto;}
  .cta-buttons{width:100%;justify-content:center;}
  .footer-links{grid-template-columns:1fr 1fr;gap:24px;}
}
@media (max-width:520px){
  .logo-name{font-size:17px;}
  .logo-badge{width:32px;height:32px;font-size:14px;}
  .header-top{gap:12px;}
  .header-tools{display:flex;gap:8px;margin-left:auto;}
  .header-actions .btn-sm{padding:8px 10px;font-size:13px;}
  .footer-links{grid-template-columns:1fr;}
  .footer-bottom{font-size:12px;flex-direction:column;gap:4px;}
  .article-meta{gap:10px;font-size:13px;}
  .section-header h2{font-size:22px;}
  .section-header p{font-size:14px;}
}

/* roulang page: category2 */
:root {
  --primary: #1B6CFF;
  --primary-glow: rgba(27, 108, 255, 0.6);
  --accent: #00E5A0;
  --accent-glow: rgba(0, 229, 160, 0.45);
  --orange: #FF7A1A;
  --bg-deep: #060B14;
  --bg-panel: #0B1424;
  --bg-card: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.14);
  --text-main: #EAF0F6;
  --text-sub: #93A1B4;
  --text-mute: #5D6B80;
  --radius: 16px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
  --font-mono: "JetBrains Mono", "DIN Alternate", "Roboto Mono", Consolas, monospace;
  --font-sans: "HarmonyOS Sans", "PingFang SC", "Source Han Sans SC", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --space-section: 80px;
  --space-mobile: 48px;
  --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-main);
  font-size: 17px;
  line-height: 26px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: all 0.25s ease; }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 4px; }
::selection { background: rgba(27, 108, 255, 0.35); color: #fff; }
::-webkit-scrollbar { width: 8px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  transition: all 0.25s ease;
  border: none;
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 rgba(27, 108, 255, 0);
}
.btn-primary:hover {
  box-shadow: 0 0 24px var(--primary-glow);
  transform: translateX(2px);
  background: #2a79f6;
  color: #fff;
}
.btn-primary:active { transform: translateY(1px) translateX(2px); box-shadow: 0 0 12px rgba(27, 108, 255, 0.4); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--primary);
  border: 1px solid rgba(27, 108, 255, 0.5);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(27, 108, 255, 0.1);
  box-shadow: 0 0 16px rgba(27, 108, 255, 0.25);
  color: var(--primary);
  border-color: var(--primary);
}
.btn-ghost:active { transform: translateY(1px); }
.btn-sm { padding: 9px 16px; font-size: 13px; border-radius: 10px; }
.btn-accent {
  background: var(--accent);
  color: #04282b;
  font-weight: 700;
  box-shadow: 0 0 0 rgba(0, 229, 160, 0);
}
.btn-accent:hover { box-shadow: 0 0 28px var(--accent-glow); transform: translateY(-2px); color: #052e2a; }
.btn-disabled, .btn:disabled { opacity: 0.4; box-shadow: none; cursor: not-allowed; pointer-events: none; }

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--glass-border);
  color: var(--text-sub);
  backdrop-filter: blur(8px);
}
.badge-pill .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  flex-shrink: 0;
}
.badge-pill .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(6, 11, 20, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}
.site-header.scrolled {
  background: rgba(6, 11, 20, 0.92);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}
.header-top {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 24px;
  max-width: var(--container);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  flex-shrink: 0;
  transition: opacity 0.2s;
}
.logo:hover { opacity: 0.85; color: var(--text-main); }
.logo-badge {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(27, 108, 255, 0.25), rgba(0, 229, 160, 0.16));
  border: 1px solid rgba(27, 108, 255, 0.55);
  border-radius: 12px;
  color: var(--primary);
  font-size: 18px;
  box-shadow: 0 0 18px rgba(27, 108, 255, 0.2);
}
.logo-name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-main);
  line-height: 1.1;
  display: flex; flex-direction: column;
}
.logo-name small {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-sub);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 3px;
}
.header-search {
  flex: 1;
  max-width: 440px;
  margin-left: auto;
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(27, 108, 255, 0.2);
}
.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  padding: 10px 18px;
  font-size: 14px;
}
.header-search input::placeholder { color: var(--text-mute); }
.header-search button {
  width: 42px;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  border-radius: 0;
  transition: background 0.2s;
}
.header-search button:hover { background: #2a79f6; }
.header-actions { display: flex; gap: 10px; margin-left: auto; flex-shrink: 0; }
.search-toggle { display: none; }
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 24px 12px;
  max-width: var(--container);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.header-nav::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  border: 1px solid transparent;
  backdrop-filter: blur(8px);
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-tab i { font-size: 13px; opacity: 0.85; }
.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.08);
}
.nav-tab.active {
  color: #fff;
  background: rgba(27, 108, 255, 0.2);
  border-color: rgba(27, 108, 255, 0.6);
  box-shadow: 0 0 18px rgba(27, 108, 255, 0.25);
}
.nav-tab.active i { color: var(--primary); }

/* ========== Hero ========== */
.page-hero {
  position: relative;
  padding: 85px 0 0;
  background: var(--bg-deep);
  overflow: hidden;
}
.page-hero .hero-bg {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(115deg, rgba(6, 11, 20, 0.94) 10%, rgba(6, 11, 20, 0.55) 60%, rgba(6, 11, 20, 0.8)), url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.page-hero .hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.5;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 30px 0 80px;
  display: flex;
  gap: 50px;
  align-items: center;
  min-height: 420px;
}
.hero-copy { flex: 1 1 58%; }
.hero-visual { flex: 1 1 42%; position: relative; }
.hero-copy .badge-pill { margin-bottom: 22px; }
.hero-copy h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  color: var(--text-main);
  position: relative;
  padding-left: 20px;
}
.hero-copy h1::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 5px;
  height: calc(100% - 12px);
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 4px;
  box-shadow: 0 0 14px rgba(27, 108, 255, 0.4);
}
.hero-copy .lead {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}
.hero-copy .desc {
  color: var(--text-sub);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 540px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stats .stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stats .stat-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 1px;
}
.hero-stats .stat-label {
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero-visual .visual-card {
  background: rgba(11, 20, 36, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  padding: 26px;
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}
.visual-card .vc-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 18px;
}
.vc-top span { color: var(--text-sub); font-size: 13px; }
.vc-top i { color: var(--accent); font-size: 20px; }
.visual-card .vc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.vc-grid .vc-cell {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  padding: 12px 14px;
}
.vc-cell .vc-label { font-size: 11px; color: var(--text-mute); display: block; margin-bottom: 4px; }
.vc-cell .vc-value { font-size: 15px; font-weight: 700; color: var(--text-main); }
.vc-cell .progress-bar { height: 4px; background: rgba(255, 255, 255, 0.1); border-radius: 4px; margin-top: 8px; overflow: hidden; }
.vc-cell .progress-bar span { display: block; height: 100%; border-radius: 4px; background: var(--accent); box-shadow: 0 0 10px rgba(0, 229, 160, 0.4); }

/* ========== Breadcrumb ========== */
.crumb-container {
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(6, 11, 20, 0.5);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-mute);
  max-width: var(--container);
  margin: 0 auto;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 11px; color: var(--text-mute); opacity: 0.6; }
.breadcrumb .current { color: var(--text-main); font-weight: 600; }

/* ========== Section base ========== */
.section { padding: var(--space-section) 0; position: relative; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  position: relative;
  padding-bottom: 12px;
}
.section-head h2::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 48px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.section-head .section-sub {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 380px;
  text-align: right;
}

/* ========== Topic Layout (左窄右宽) ========== */
.topic-wrap {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  align-items: start;
}
.topic-sidebar {
  position: sticky;
  top: 130px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: rgba(11, 20, 36, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 20px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}
.topic-sidebar .side-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.topic-sidebar .side-title::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary);
}
.side-anchor {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  transition: all 0.2s ease;
  border: 1px solid transparent;
}
.side-anchor i { width: 18px; text-align: center; font-size: 14px; color: var(--text-mute); }
.side-anchor:hover {
  background: rgba(27, 108, 255, 0.08);
  color: var(--text-main);
  border-color: rgba(27, 108, 255, 0.2);
}
.side-anchor.active {
  background: rgba(27, 108, 255, 0.15);
  border-color: rgba(27, 108, 255, 0.45);
  color: var(--primary);
}
.side-anchor.active i { color: var(--primary); }
.sidebar-cta { margin-top: 10px; }

/* ========== Tag Group Panels ========== */
.topic-main { display: flex; flex-direction: column; gap: 34px; }
.tag-group {
  background: rgba(11, 20, 36, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 20px;
  padding: 32px;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.tag-group:hover {
  border-color: rgba(27, 108, 255, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
}
.tag-group-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}
.tag-group-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--primary);
  line-height: 1;
}
.tag-group-title h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-main);
}
.tag-group-title p {
  font-size: 13px;
  color: var(--text-mute);
  margin-top: 3px;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.22s ease;
}
.tag-chip i { font-size: 12px; opacity: 0.7; }
.tag-chip:hover {
  background: rgba(27, 108, 255, 0.15);
  border-color: rgba(27, 108, 255, 0.55);
  color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(27, 108, 255, 0.15);
}
.tag-chip .hot-dot {
  width: 6px; height: 6px;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(255, 122, 26, 0.5);
}

/* ========== Journey / 流程 ========== */
.journey-section {
  background: linear-gradient(160deg, rgba(11, 20, 36, 0.8) 0%, rgba(6, 11, 20, 0.95) 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.journey-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.journey-item {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  padding: 28px 22px;
  transition: all 0.25s ease;
  overflow: hidden;
}
.journey-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.6;
}
.journey-item:hover {
  transform: translateY(-4px);
  background: rgba(27, 108, 255, 0.08);
  border-color: rgba(27, 108, 255, 0.3);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}
.journey-step {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.journey-step::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 229, 160, 0.3), transparent);
}
.journey-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text-main); }
.journey-item p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ========== Scenes ========== */
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.scene-card {
  display: flex;
  gap: 18px;
  background: rgba(11, 20, 36, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 22px;
  backdrop-filter: blur(10px);
  transition: all 0.25s ease;
}
.scene-card:hover {
  border-color: rgba(27, 108, 255, 0.3);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.scene-icon {
  width: 48px; height: 48px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(27, 108, 255, 0.12);
  border: 1px solid rgba(27, 108, 255, 0.25);
  border-radius: 12px;
  color: var(--primary);
  font-size: 19px;
}
.scene-body h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; color: var(--text-main); }
.scene-body p { font-size: 14px; color: var(--text-sub); line-height: 1.65; }

/* ========== FAQ ========== */
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.faq-item.active {
  border-color: rgba(27, 108, 255, 0.45);
  box-shadow: 0 6px 24px rgba(27, 108, 255, 0.12);
  background: rgba(11, 20, 36, 0.7);
}
.faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: color 0.2s;
}
.faq-q i {
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(27, 108, 255, 0.12);
  color: var(--primary);
  font-size: 11px;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.active .faq-q { color: var(--primary); }
.faq-item.active .faq-q i { transform: rotate(90deg); background: rgba(27, 108, 255, 0.2); }
.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.active .faq-a {
  max-height: 300px;
  padding-bottom: 22px;
}

/* ========== CTA Banner ========== */
.cta-banner {
  position: relative;
  padding: 70px 0;
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(120deg, rgba(27, 108, 255, 0.22) 0%, rgba(0, 229, 160, 0.13) 50%, rgba(27, 108, 255, 0.1) 100%);
  border: 1px solid rgba(27, 108, 255, 0.28);
  text-align: center;
  backdrop-filter: blur(12px);
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%; left: -20%;
  width: 60%; height: 180%;
  background: radial-gradient(closest-side, rgba(27, 108, 255, 0.3), transparent);
  opacity: 0.4;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40%; right: -15%;
  width: 50%; height: 160%;
  background: radial-gradient(closest-side, rgba(0, 229, 160, 0.2), transparent);
  opacity: 0.35;
}
.cta-inner { position: relative; z-index: 2; }
.cta-inner h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.cta-inner p { color: var(--text-sub); font-size: 16px; margin-bottom: 28px; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ========== Footer ========== */
.site-footer {
  background: #040810;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 60px;
  font-size: 14px;
}
.site-footer .container {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 50px;
  padding-bottom: 30px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-sub); font-size: 15px; line-height: 1.7; max-width: 300px; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-sub);
  font-size: 15px;
}
.footer-social a:hover { color: var(--primary); border-color: var(--primary); background: rgba(27, 108, 255, 0.1); box-shadow: 0 0 16px rgba(27, 108, 255, 0.2); }
.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text-sub); font-size: 14px; transition: all 0.2s; }
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--text-mute);
  font-size: 13px;
}
.footer-bottom .site-domain { color: var(--text-sub); font-family: var(--font-mono); }
.footer-bottom span { opacity: 0.85; }

/* ========== Back to top ========== */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(11, 20, 36, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(14px);
  color: var(--text-main);
  font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: all 0.35s ease;
  z-index: 999;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { color: var(--primary); border-color: var(--primary); box-shadow: 0 0 20px rgba(27, 108, 255, 0.35); }

/* ========== Loading state ========== */
.btn.loading { position: relative; color: transparent !important; pointer-events: none; }
.btn.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px; height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  :root { --space-section: 60px; }
  .hero-inner { flex-direction: column; gap: 40px; }
  .hero-visual { max-width: 480px; width: 100%; }
  .topic-wrap { grid-template-columns: 1fr; }
  .topic-sidebar { position: static; flex-direction: row; flex-wrap: wrap; overflow-x: auto; padding: 14px; }
  .side-anchor { white-space: nowrap; }
  .journey-grid { grid-template-columns: 1fr 1fr; }
  .site-footer .container { grid-template-columns: 1fr; gap: 40px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .header-search { display: none; }
  .search-toggle { display: flex; width: 42px; height: 42px; align-items: center; justify-content: center; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 10px; color: var(--text-main); font-size: 15px; }
  .header-actions .btn-ghost { display: none; }
}
@media (max-width: 768px) {
  :root { --space-section: 48px; }
  body { font-size: 16px; line-height: 24px; }
  .container { padding: 0 16px; }
  .header-top { padding: 12px 16px; gap: 12px; }
  .logo-name { font-size: 19px; }
  .logo-name small { font-size: 9px; }
  .hero-copy h1 { font-size: 28px; line-height: 1.35; }
  .hero-copy .lead { font-size: 17px; }
  .hero-copy .desc { font-size: 15px; }
  .hero-stats { gap: 18px; }
  .hero-stats .stat-num { font-size: 20px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .section-head .section-sub { text-align: left; }
  .tag-group { padding: 22px 18px; }
  .tag-group-num { font-size: 22px; }
  .journey-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .cta-inner h2 { font-size: 24px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .back-top { right: 14px; bottom: 14px; width: 42px; height: 42px; font-size: 15px; }
  .faq-q { font-size: 15px; padding: 16px 18px; }
  .faq-a { padding: 0 18px; font-size: 14px; }
  .faq-item.active .faq-a { padding-bottom: 18px; }
  .header-actions .btn-primary span { display: none; }
  .header-actions .btn-primary { width: 42px; padding: 0; justify-content: center; }
}
@media (max-width: 520px) {
  .hero-copy h1 { font-size: 25px; }
  .btn { padding: 12px 18px; font-size: 14px; }
  .footer-links { grid-template-columns: 1fr; gap: 24px; }
  .tag-chip { padding: 7px 13px; font-size: 13px; }
  .journey-item { padding: 22px 16px; }
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1B6CFF;
            --primary-rgb: 27, 108, 255;
            --accent: #00E5A0;
            --accent-rgb: 0, 229, 160;
            --orange: #FF7A1A;
            --bg: #060B14;
            --bg-deep: #04070C;
            --bg-section: #0B1424;
            --glass: rgba(255, 255, 255, 0.06);
            --glass-strong: rgba(255, 255, 255, 0.1);
            --glass-border: rgba(255, 255, 255, 0.14);
            --text: #EAF0F6;
            --text-secondary: #93A1B4;
            --text-muted: #5D6B80;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --glow-primary: 0 0 24px rgba(27, 108, 255, 0.6);
            --glow-accent: 0 0 20px rgba(0, 229, 160, 0.45);
            --space-section: 80px;
            --space-section-mobile: 48px;
            --gap: 24px;
            --font-tech: 'Inter', 'DIN Alternate', 'HarmonyOS Sans SC', 'PingFang SC', sans-serif;
        }

        /* ============ Reset & Base ============ */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'HarmonyOS Sans SC', 'PingFang SC', 'Source Han Sans SC', 'Inter', 'Microsoft YaHei', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
        button { font-family: inherit; cursor: pointer; border: 0; background: none; }
        input, button { outline: none; }
        ul, ol { list-style: none; }
        :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        ::selection { background: rgba(var(--primary-rgb), 0.4); color: #fff; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            transition: all 0.3s ease;
            cursor: pointer;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(var(--primary-rgb), 0.35);
        }
        .btn-primary:hover {
            transform: translateX(-2px);
            box-shadow: var(--glow-primary);
            background: #2a79ff;
        }
        .btn-primary:active { transform: translateY(1px); }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(var(--primary-rgb), 0.5);
            color: var(--text);
        }
        .btn-ghost:hover {
            background: rgba(var(--primary-rgb), 0.12);
            border-color: var(--primary);
        }
        .btn-ghost:active { transform: translateY(1px); }
        .btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 10px; }
        .btn-lg { padding: 16px 32px; font-size: 16px; border-radius: 14px; }

        /* ============ Header / 导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 20, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(4, 7, 12, 0.92);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }
        .header-top {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 14px 0;
            flex-wrap: nowrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 19px;
            color: var(--text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-badge {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #7B6CFF);
            border-radius: 10px;
            color: #fff;
            font-size: 15px;
            box-shadow: 0 0 18px rgba(var(--primary-rgb), 0.4);
        }
        .logo-name { line-height: 1.1; }
        .logo-name small {
            display: block;
            font-size: 10px;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.5px;
        }
        .header-search {
            flex: 1;
            max-width: 360px;
            display: flex;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-pill);
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.18);
        }
        .header-search input {
            flex: 1;
            min-width: 0;
            background: transparent;
            border: 0;
            padding: 10px 16px;
            color: var(--text);
            font-size: 14px;
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search button {
            width: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.3s ease;
        }
        .header-search button:hover { color: var(--primary); background: rgba(var(--primary-rgb), 0.15); }

        .search-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text);
            font-size: 15px;
        }

        .header-actions { display: flex; gap: 10px; margin-left: auto; flex-shrink: 0; }

        .header-nav {
            display: flex;
            gap: 8px;
            padding-bottom: 12px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav::-webkit-scrollbar { display: none; }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid transparent;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .nav-tab i { font-size: 13px; }
        .nav-tab:hover { background: rgba(255, 255, 255, 0.08); color: var(--text); }
        .nav-tab.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.4);
        }

        /* ============ 通用 Section ============ */
        .section { padding: var(--space-section) 0; }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 44px;
            flex-wrap: wrap;
        }
        .section-overline {
            display: inline-block;
            font-family: var(--font-tech);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 3px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            position: relative;
            padding-left: 20px;
            line-height: 1.3;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            bottom: 5px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 560px;
            line-height: 1.7;
        }

        /* ============ Hero ============ */
        .page-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            padding: 90px 0;
            background-color: var(--bg-section);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(6, 11, 20, 0.95) 25%, rgba(11, 20, 36, 0.78) 60%, rgba(6, 11, 20, 0.55) 100%);
            z-index: 1;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 34px 34px;
            z-index: 1;
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            background: rgba(var(--accent-rgb), 0.12);
            border: 1px solid rgba(var(--accent-rgb), 0.3);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px var(--accent);
        }
        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .hero-title span { color: var(--primary); }
        .hero-subtitle {
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 14px;
        }
        .hero-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 30px;
            max-width: 560px;
        }
        .hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
        .hero-metrics {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .metric-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 18px;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            backdrop-filter: blur(8px);
        }
        .metric-value {
            font-family: var(--font-tech);
            font-size: 20px;
            font-weight: 800;
            color: var(--accent);
        }
        .metric-label { font-size: 13px; color: var(--text-secondary); }

        /* ============ 排行榜 TOP N ============ */
        .rank-section { background: var(--bg-section); border-top: 1px solid rgba(255, 255, 255, 0.04); border-bottom: 1px solid rgba(255, 255, 255, 0.04); }
        .rank-list { max-width: 1100px; margin: 0 auto; }
        .rank-item {
            display: grid;
            grid-template-columns: 80px 1fr 180px;
            grid-template-areas: "number content thumb" "bar bar bar";
            gap: 12px 24px;
            align-items: center;
            padding: 24px;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
        }
        .rank-item:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(var(--primary-rgb), 0.45);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .rank-number {
            grid-area: number;
            font-family: var(--font-tech);
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.85;
            line-height: 1;
            text-shadow: 0 0 20px rgba(var(--accent-rgb), 0.2);
        }
        .rank-content { grid-area: content; }
        .rank-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .rank-tag {
            font-size: 11px;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            background: rgba(var(--primary-rgb), 0.15);
            color: #7EA9FF;
            font-weight: 500;
        }
        .rank-tag.hot { background: rgba(255, 122, 26, 0.15); color: var(--orange); }
        .rank-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 560px;
        }
        .rank-thumb {
            grid-area: thumb;
            border-radius: 12px;
            overflow: hidden;
            height: 90px;
            background: var(--bg-section);
        }
        .rank-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .rank-item:hover .rank-thumb img { transform: scale(1.04); }
        .rank-progress {
            grid-area: bar;
            height: 3px;
            background: rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-pill);
            overflow: hidden;
        }
        .rank-progress span {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, var(--accent), rgba(var(--accent-rgb), 0.35));
            border-radius: var(--radius-pill);
            box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.3);
        }

        /* ============ 快讯时间线 ============ */
        .flash-timeline {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
            padding-left: 0;
        }
        .flash-timeline::before {
            content: '';
            position: absolute;
            left: 90px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
            opacity: 0.35;
        }
        .flash-item {
            display: grid;
            grid-template-columns: 70px 20px 1fr;
            gap: 16px;
            margin-bottom: 28px;
            position: relative;
        }
        .flash-time {
            font-family: var(--font-tech);
            font-size: 16px;
            font-weight: 700;
            color: var(--accent);
            text-align: right;
            line-height: 1.4;
            padding-top: 2px;
        }
        .flash-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--bg);
            box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.25), 0 0 12px rgba(var(--primary-rgb), 0.4);
            margin-top: 6px;
            justify-self: center;
        }
        .flash-content {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            padding: 18px 22px;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }
        .flash-content:hover {
            border-color: rgba(var(--accent-rgb), 0.4);
            background: rgba(255, 255, 255, 0.09);
        }
        .flash-pill {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.12);
            border-radius: var(--radius-pill);
            padding: 3px 10px;
            margin-bottom: 8px;
        }
        .flash-content h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 4px;
        }
        .flash-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ============ 标签云 ============ */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 850px;
            margin: 0 auto;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-pill);
            background: var(--glass);
            border: 1px solid var(--glass-border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: all 0.3s ease;
            backdrop-filter: blur(6px);
        }
        .tag-item i { font-size: 12px; color: var(--accent); }
        .tag-item:hover {
            background: rgba(var(--primary-rgb), 0.15);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(var(--primary-rgb), 0.2);
        }
        .tag-item.popular {
            background: rgba(var(--accent-rgb), 0.1);
            border-color: rgba(var(--accent-rgb), 0.3);
        }
        .tag-item.popular i { color: var(--accent); }

        /* ============ CTA ============ */
        .cta-section { padding: 40px 0 80px; }
        .cta-box {
            position: relative;
            background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.2), rgba(var(--accent-rgb), 0.08));
            border: 1px solid rgba(var(--primary-rgb), 0.35);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 20%;
            width: 50%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(var(--primary-rgb), 0.2), transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-box p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 30px;
            position: relative;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        /* ============ FAQ ============ */
        .faq-section { background: var(--bg-section); border-top: 1px solid rgba(255, 255, 255, 0.04); }
        .faq-list { max-width: 820px; margin: 0 auto; }
        .faq-item {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }
        .faq-item.active {
            border-color: rgba(var(--primary-rgb), 0.5);
            box-shadow: 0 0 24px rgba(var(--primary-rgb), 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 22px 26px;
            background: transparent;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            transition: color 0.3s ease;
        }
        .faq-question .faq-icon {
            margin-left: auto;
            color: var(--text-muted);
            transition: all 0.35s ease;
            font-size: 14px;
        }
        .faq-item.active .faq-question { color: var(--primary); }
        .faq-item.active .faq-icon { transform: rotate(45deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 26px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 260px;
            padding: 0 26px 24px;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            text-align: center;
        }
        .footer-brand p { font-size: 14px; color: var(--text-secondary); max-width: 360px; line-height: 1.6; }
        .footer-social { display: flex; gap: 12px; margin-top: 4px; }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.3s ease;
        }
        .footer-social a:hover {
            background: rgba(var(--primary-rgb), 0.15);
            color: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-top: 8px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col a {
            font-size: 13px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
        }
        .footer-col a::before {
            content: '›';
            color: var(--primary);
            font-size: 14px;
            opacity: 0.6;
            transition: opacity 0.3s ease;
        }
        .footer-col a:hover { color: var(--text); }
        .footer-col a:hover::before { opacity: 1; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom .site-domain { color: var(--text-secondary); }

        /* ============ 返回顶部 ============ */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: var(--text);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.3s ease;
            z-index: 90;
            box-shadow: var(--shadow-card);
        }
        .back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-to-top:hover {
            background: rgba(var(--primary-rgb), 0.18);
            border-color: var(--primary);
            color: #fff;
            box-shadow: var(--glow-primary);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .header-search { max-width: 260px; }
            .rank-item { grid-template-columns: 68px 1fr 140px; }
            .footer-links { grid-template-columns: repeat(2, 1fr); }
            .section { padding: 60px 0; }
        }
        @media (max-width: 768px) {
            .header-top { gap: 12px; }
            .header-search {
                display: none;
                position: absolute;
                top: 100%;
                left: 16px;
                right: 16px;
                max-width: none;
                background: rgba(4, 7, 12, 0.96);
                border: 1px solid var(--glass-border);
                z-index: 50;
                box-shadow: var(--shadow-hover);
            }
            .header-search.open { display: flex; }
            .search-toggle { display: inline-flex; }
            .header-actions .btn-primary { display: none; }
            .header-actions .btn-ghost {
                width: 38px;
                height: 38px;
                padding: 0;
                justify-content: center;
                border-radius: 50%;
            }
            .header-actions .btn-ghost span { display: none; }
            .header-nav { gap: 6px; }
            .nav-tab { padding: 8px 16px; font-size: 13px; }

            .page-hero { min-height: 420px; padding: 60px 0; }
            .hero-title { font-size: 30px; }
            .hero-subtitle { font-size: 18px; }
            .hero-metrics { gap: 14px; }
            .metric-item { padding: 8px 14px; }

            .section-header { margin-bottom: 32px; }
            .section-title { font-size: 24px; }
            .rank-item {
                grid-template-columns: 56px 1fr;
                grid-template-areas: "number content" "thumb thumb" "bar bar";
                padding: 18px;
                gap: 10px 14px;
            }
            .rank-number { font-size: 34px; }
            .rank-thumb { height: 140px; margin-top: 4px; }
            .flash-timeline::before { left: 56px; }
            .flash-item { grid-template-columns: 48px 16px 1fr; gap: 10px; }
            .flash-time { font-size: 13px; }
            .flash-content { padding: 14px 16px; }
            .cta-box { padding: 36px 24px; }
            .cta-box h2 { font-size: 24px; }
            .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
            .back-to-top { bottom: 20px; right: 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .logo { font-size: 16px; }
            .logo-badge { width: 32px; height: 32px; font-size: 13px; border-radius: 8px; }
            .logo-name small { font-size: 9px; }
            .header-top { padding: 10px 0; }
            .nav-tab { font-size: 12px; padding: 7px 13px; }
            .page-hero { min-height: 380px; padding: 50px 0; }
            .hero-title { font-size: 26px; line-height: 1.3; }
            .hero-desc { font-size: 14px; }
            .hero-ctas .btn { width: auto; }
            .section { padding: var(--space-section-mobile) 0; }
            .section-title { font-size: 21px; }
            .rank-item { grid-template-columns: 46px 1fr; padding: 16px; }
            .rank-number { font-size: 30px; }
            .rank-desc { font-size: 13px; }
            .flash-timeline::before { left: 44px; }
            .flash-item { grid-template-columns: 40px 14px 1fr; }
            .flash-time { font-size: 12px; }
            .flash-content h3 { font-size: 15px; }
            .footer-links { grid-template-columns: 1fr; }
            .cta-box h2 { font-size: 22px; }
            .cta-box p { font-size: 14px; }
            .back-to-top { width: 40px; height: 40px; }
        }