/* roulang page: index */
:root {
  --bg-dark: oklch(14% 0.02 45);
  --bg-dark-2: oklch(18% 0.025 45);
  --surface: oklch(97% 0.01 60);
  --surface-raised: oklch(100% 0 0);
  --accent: oklch(68% 0.18 48);
  --accent-hover: oklch(62% 0.20 48);
  --accent-rose: oklch(72% 0.14 20);
  --accent-rose-light: oklch(94% 0.04 20);
  --text: oklch(18% 0.02 45);
  --text-light: oklch(100% 0 0);
  --muted: oklch(52% 0.03 60);
  --border: oklch(88% 0.02 60);
  --border-dark: oklch(25% 0.025 45);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px oklch(14% 0.02 45 / 0.08);
  --shadow-md: 0 4px 20px oklch(14% 0.02 45 / 0.14);
  --shadow-lg: 0 8px 32px oklch(14% 0.02 45 / 0.18);
  --transition: 180ms ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--surface);
  margin: 0;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; display: block; }
button, input, textarea, select { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }

/* ── HEADER ── */
.site-header {
  background: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px oklch(0% 0 0 / 0.35);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  gap: 1rem;
}

.site-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.01em;
  white-space: nowrap;
  text-decoration: none;
}
.site-logo:hover { color: var(--accent-hover); }

.header-search {
  flex: 1;
  max-width: 340px;
  position: relative;
}
.header-search input {
  width: 100%;
  background: var(--bg-dark-2);
  border: 1px solid var(--border-dark);
  border-radius: 20px;
  padding: 0.45rem 2.5rem 0.45rem 1rem;
  color: var(--text-light);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
}
.header-search input::placeholder { color: oklch(60% 0.02 45); }
.header-search input:focus { border-color: var(--accent); }
.header-search .search-icon {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.8rem;
  pointer-events: none;
}

.header-hot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: oklch(65% 0.03 60);
  white-space: nowrap;
}
.header-hot .hot-label {
  color: var(--accent-rose);
  font-weight: 600;
}
.header-hot a {
  color: oklch(72% 0.03 60);
  font-size: 0.78rem;
}
.header-hot a:hover { color: var(--accent); }

.nav-bar {
  background: var(--bg-dark-2);
  border-top: 1px solid var(--border-dark);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-inner a {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: oklch(78% 0.02 60);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.nav-inner a:hover { color: var(--accent); }
.nav-inner a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* ── HERO ── */
.hero {
  background: var(--bg-dark);
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border-dark);
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2.5rem;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: oklch(68% 0.18 48 / 0.15);
  border: 1px solid oklch(68% 0.18 48 / 0.35);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--text-light);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.hero h1 span { color: var(--accent); }
.hero-desc {
  color: oklch(72% 0.02 60);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 52ch;
  margin-bottom: 1.5rem;
}
.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px oklch(68% 0.18 48 / 0.4);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--border-dark);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: oklch(68% 0.18 48 / 0.08);
}
.btn-rose {
  background: var(--accent-rose);
  color: #fff;
}
.btn-rose:hover {
  background: oklch(66% 0.16 20);
  color: #fff;
  transform: translateY(-1px);
}
.btn-sm { padding: 0.45rem 1rem; font-size: 0.82rem; }
.btn-block { width: 100%; justify-content: center; }

.hero-panel {
  background: var(--bg-dark-2);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.hero-panel-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.stat-item {
  background: oklch(20% 0.025 45);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  text-align: center;
}
.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.75rem;
  color: oklch(62% 0.02 60);
}
.trend-list { list-style: none; margin: 0; padding: 0; }
.trend-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border-dark);
  font-size: 0.85rem;
  color: oklch(75% 0.02 60);
}
.trend-list li:last-child { border-bottom: none; }
.trend-rank {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 1.2rem;
  font-variant-numeric: tabular-nums;
}
.trend-list li a { color: oklch(80% 0.02 60); font-size: 0.85rem; }
.trend-list li a:hover { color: var(--accent); }

/* ── SECTIONS ── */
section { padding: clamp(2.5rem, 5vw, 4rem) 0; }
section + section { border-top: 1px solid var(--border); }

.section-header { margin-bottom: 2rem; }
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.5rem;
  line-height: 1.3;
}
.section-desc {
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 60ch;
  margin: 0;
}

/* ── CATEGORY ENTRY ── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.cat-card {
  background: var(--bg-dark);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  text-decoration: none;
  border: 1px solid var(--border-dark);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.cat-icon {
  width: 52px;
  height: 52px;
  background: oklch(68% 0.18 48 / 0.15);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.cat-card:nth-child(2) .cat-icon {
  background: oklch(72% 0.14 20 / 0.15);
}
.cat-body {}
.cat-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-light);
  margin: 0 0 0.4rem;
}
.cat-desc {
  font-size: 0.875rem;
  color: oklch(65% 0.02 60);
  margin: 0 0 0.75rem;
  line-height: 1.6;
}
.cat-arrow {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

/* ── CONTENT CARDS ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.content-card {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.content-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.card-thumb {
  height: 160px;
  background: linear-gradient(135deg, oklch(88% 0.04 48), oklch(92% 0.03 20));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  position: relative;
}
.card-thumb-2 { background: linear-gradient(135deg, oklch(90% 0.03 20), oklch(88% 0.04 48)); }
.card-thumb-3 { background: linear-gradient(135deg, oklch(86% 0.05 48), oklch(90% 0.03 60)); }
.card-thumb-4 { background: linear-gradient(135deg, oklch(92% 0.03 20), oklch(88% 0.04 20)); }
.card-thumb-5 { background: linear-gradient(135deg, oklch(88% 0.04 60), oklch(90% 0.03 48)); }
.card-thumb-6 { background: linear-gradient(135deg, oklch(86% 0.04 48), oklch(92% 0.03 20)); }
.card-tag {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}
.card-body { padding: 1.1rem; }
.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
  line-height: 1.4;
}
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--accent); }
.card-excerpt {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 0.75rem;
  line-height: 1.6;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: oklch(65% 0.03 60);
}
.card-meta i { font-size: 0.7rem; }

/* ── NEWS LIST ── */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
}
.news-list { list-style: none; margin: 0; padding: 0; }
.news-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.news-item:last-child { border-bottom: none; }
.news-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--border);
  font-variant-numeric: tabular-nums;
  min-width: 2rem;
  line-height: 1;
  padding-top: 0.2rem;
}
.news-item:nth-child(1) .news-num,
.news-item:nth-child(2) .news-num,
.news-item:nth-child(3) .news-num { color: var(--accent); }
.news-content {}
.news-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.3rem;
  line-height: 1.4;
}
.news-title a { color: var(--text); }
.news-title a:hover { color: var(--accent); }
.news-summary {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.55;
}
.news-sidebar {}
.sidebar-card {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.sidebar-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.85rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  display: inline-block;
  background: var(--accent-rose-light);
  color: var(--accent-rose);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 20px;
  border: 1px solid oklch(72% 0.14 20 / 0.25);
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
}
.tag:hover {
  background: var(--accent-rose);
  color: #fff;
}
.hot-links { list-style: none; margin: 0; padding: 0; }
.hot-links li {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}
.hot-links li:last-child { border-bottom: none; }
.hot-links a { color: var(--text); }
.hot-links a:hover { color: var(--accent); }

/* ── STATS BAR ── */
.stats-bar {
  background: var(--bg-dark);
  padding: 2.5rem 0;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}
.stats-item { text-align: center; }
.stats-num {
  font-size: clamp(1.8rem, 3vw, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 0.3rem;
}
.stats-label {
  font-size: 0.8rem;
  color: oklch(60% 0.02 60);
}

/* ── FEATURES ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.feature-card {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 44px;
  height: 44px;
  background: oklch(68% 0.18 48 / 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--accent);
}
.feature-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
}
.feature-desc {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.65;
}

/* ── TESTIMONIALS ── */
.testimonials-section { background: var(--accent-rose-light); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.testi-card {
  background: var(--surface-raised);
  border: 1px solid oklch(72% 0.14 20 / 0.2);
  border-radius: var(--radius);
  padding: 1.4rem;
  position: relative;
}
.testi-quote {
  font-size: 2rem;
  color: var(--accent-rose);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-family: Georgia, serif;
}
.testi-text {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  margin: 0 0 1rem;
}
.testi-author {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.testi-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-rose));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.testi-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}
.testi-role {
  font-size: 0.75rem;
  color: var(--muted);
}
.stars {
  color: var(--accent);
  font-size: 0.75rem;
  margin-bottom: 0.5rem;
}

/* ── FAQ ── */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  background: var(--surface-raised);
  border: none;
  padding: 1.1rem 1.25rem;
  text-align: left;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background var(--transition);
}
.faq-question:hover { background: oklch(95% 0.01 60); }
.faq-question.active { color: var(--accent); }
.faq-question .faq-icon {
  font-size: 0.8rem;
  color: var(--accent);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-question.active .faq-icon { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 1.25rem 1.1rem;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.75;
  background: var(--surface-raised);
}
.faq-answer.open { display: block; }

/* ── LEAD FORM ── */
.lead-section { background: var(--bg-dark); }
.lead-inner {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 3rem;
  align-items: center;
}
.lead-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-light);
  margin: 0 0 0.75rem;
  line-height: 1.25;
}
.lead-title span { color: var(--accent); }
.lead-desc {
  color: oklch(68% 0.02 60);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}
.lead-form {
  background: var(--bg-dark-2);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}
.form-group { margin-bottom: 1rem; }
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: oklch(72% 0.02 60);
  margin-bottom: 0.4rem;
}
.form-input {
  width: 100%;
  background: oklch(20% 0.025 45);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  color: var(--text-light);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}
.form-input::placeholder { color: oklch(45% 0.02 45); }
.form-input:focus { border-color: var(--accent); }
.form-privacy {
  font-size: 0.75rem;
  color: oklch(50% 0.02 60);
  margin-top: 0.75rem;
  line-height: 1.5;
}
.form-privacy a { color: oklch(60% 0.02 60); text-decoration: underline; }

/* ── CTA BAND ── */
.cta-band {
  background: linear-gradient(135deg, oklch(62% 0.20 48), oklch(68% 0.16 20));
  padding: 3rem 0;
  text-align: center;
}
.cta-band h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: #fff;
  margin: 0 0 0.75rem;
}
.cta-band p {
  color: oklch(95% 0.02 48);
  font-size: 1rem;
  margin: 0 0 1.5rem;
  max-width: 50ch;
  margin-left: auto;
  margin-right: auto;
}
.btn-white {
  background: #fff;
  color: var(--accent);
  font-weight: 700;
}
.btn-white:hover {
  background: oklch(96% 0.01 60);
  color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px oklch(0% 0 0 / 0.2);
}

/* ── FOOTER ── */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-dark);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2rem;
}
.footer-brand {}
.footer-logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}
.footer-about {
  font-size: 0.85rem;
  color: oklch(55% 0.02 60);
  line-height: 1.7;
  max-width: 36ch;
  margin: 0 0 1rem;
}
.footer-col-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: oklch(70% 0.02 60);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a {
  font-size: 0.875rem;
  color: oklch(55% 0.02 60);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: 0.8rem;
  color: oklch(42% 0.02 60);
}
.footer-copy a { color: oklch(50% 0.02 60); }
.footer-copy a:hover { color: var(--accent); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-panel { display: none; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .lead-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-hot { display: none; }
  .cat-grid { grid-template-columns: 1fr; }
  .news-layout { grid-template-columns: 1fr; }
  .news-sidebar { display: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 640px) {
  .header-search { display: none; }
  .cards-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .nav-inner { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .nav-inner::-webkit-scrollbar { display: none; }
}

/* roulang page: category2 */
:root {
  --color-bg-dark: oklch(14% 0.02 45);
  --color-surface: oklch(97% 0.01 60);
  --color-surface-raised: oklch(99% 0.008 55);
  --color-accent: oklch(68% 0.18 48);
  --color-accent-rose: oklch(72% 0.14 20);
  --color-accent-dim: oklch(68% 0.18 48 / 0.12);
  --color-text: oklch(18% 0.02 45);
  --color-muted: oklch(52% 0.03 60);
  --color-border: oklch(88% 0.02 60);
  --color-border-dark: oklch(25% 0.02 45);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 2px 8px oklch(14% 0.02 45 / 0.08);
  --shadow-card-hover: 0 8px 24px oklch(14% 0.02 45 / 0.14);
  --transition: 180ms ease;
  --font-mono: 'Courier New', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--color-surface);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 1rem;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── HEADER ── */
.site-header {
  background: var(--color-bg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px oklch(0% 0 0 / 0.35);
}

.header-top {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.site-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-search {
  position: relative;
  flex: 1;
  min-width: 180px;
  max-width: 340px;
}

.header-search input {
  width: 100%;
  background: oklch(22% 0.02 45);
  border: 1px solid var(--color-border-dark);
  border-radius: 20px;
  padding: 0.45rem 2.4rem 0.45rem 1rem;
  color: oklch(90% 0.01 60);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
}

.header-search input::placeholder { color: oklch(55% 0.02 60); }
.header-search input:focus { border-color: var(--color-accent); }

.search-icon {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  font-size: 0.8rem;
  pointer-events: none;
}

.header-hot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hot-label {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.header-hot a {
  color: oklch(75% 0.02 60);
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  border: 1px solid var(--color-border-dark);
  transition: all var(--transition);
  white-space: nowrap;
}

.header-hot a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.nav-bar {
  background: oklch(18% 0.02 45);
  border-top: 1px solid var(--color-border-dark);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.nav-inner a {
  color: oklch(72% 0.02 60);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.7rem 1.1rem;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-inner a:hover { color: var(--color-accent); }
.nav-inner a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* ── HERO ── */
.page-hero {
  background: var(--color-bg-dark);
  padding: clamp(2.5rem, 5vw, 4rem) 0 clamp(2rem, 4vw, 3rem);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 80% 50%, oklch(68% 0.18 48 / 0.08) 0%, transparent 70%),
              radial-gradient(ellipse 50% 80% at 10% 80%, oklch(72% 0.14 20 / 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-accent-dim);
  border: 1px solid oklch(68% 0.18 48 / 0.3);
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--color-surface);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.hero-title span { color: var(--color-accent); }

.hero-desc {
  color: oklch(72% 0.02 60);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 1.75rem;
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--color-accent);
  color: oklch(14% 0.02 45);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.7rem 1.6rem;
  border-radius: 8px;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-primary:hover {
  background: oklch(72% 0.18 48);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px oklch(68% 0.18 48 / 0.35);
}

.btn-outline {
  border: 1.5px solid oklch(68% 0.18 48 / 0.5);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.4rem;
  border-radius: 8px;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-outline:hover {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
}

.hero-panel {
  background: oklch(20% 0.02 45);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.hero-panel-title {
  color: oklch(80% 0.02 60);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.match-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: oklch(24% 0.02 45);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-dark);
  transition: border-color var(--transition);
}

.match-row:hover { border-color: oklch(68% 0.18 48 / 0.4); }

.match-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.match-info { flex: 1; min-width: 0; }

.match-name {
  color: oklch(88% 0.01 60);
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.match-sub {
  color: oklch(55% 0.02 60);
  font-size: 0.75rem;
}

.match-tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  background: oklch(68% 0.18 48 / 0.15);
  color: var(--color-accent);
  white-space: nowrap;
}

/* ── SECTIONS ── */
section { padding: clamp(2.5rem, 5vw, 4rem) 0; }

.section-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--color-muted);
  font-size: 0.975rem;
  max-width: 60ch;
  line-height: 1.7;
}

.section-header { margin-bottom: 2rem; }

/* ── SCENARIO CARDS ── */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.scenario-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.scenario-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.scenario-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  border-color: oklch(88% 0.04 48);
}

.scenario-card:hover::before { transform: scaleX(1); }

.scenario-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.scenario-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.scenario-card p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  background: var(--color-accent-dim);
  color: var(--color-accent);
  border: 1px solid oklch(68% 0.18 48 / 0.2);
}

.tag-rose {
  background: oklch(72% 0.14 20 / 0.1);
  color: var(--color-accent-rose);
  border-color: oklch(72% 0.14 20 / 0.2);
}

/* ── TIPS SECTION ── */
.tips-section { background: oklch(95% 0.01 55); }

.tips-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: start;
}

.tips-sticky { position: sticky; top: 100px; }

.tips-visual {
  background: var(--color-bg-dark);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border-dark);
}

.tips-visual-title {
  color: oklch(80% 0.02 60);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.color-pair {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  background: oklch(20% 0.02 45);
  margin-bottom: 0.6rem;
  border: 1px solid var(--color-border-dark);
}

.color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
}

.color-pair-info { flex: 1; }

.color-pair-name {
  color: oklch(85% 0.01 60);
  font-size: 0.85rem;
  font-weight: 600;
}

.color-pair-note {
  color: oklch(55% 0.02 60);
  font-size: 0.75rem;
}

.color-pair-score {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.tips-list { display: flex; flex-direction: column; gap: 1rem; }

.tip-item {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.tip-item:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: oklch(88% 0.04 48);
}

.tip-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: oklch(14% 0.02 45);
  font-size: 0.85rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.tip-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.tip-content p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.65;
}

/* ── STYLE MATRIX ── */
.matrix-section { background: var(--color-bg-dark); }

.matrix-section .section-title { color: var(--color-surface); }
.matrix-section .section-desc { color: oklch(62% 0.02 60); }
.matrix-section .section-label { color: var(--color-accent); }

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.matrix-card {
  background: oklch(20% 0.02 45);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: all var(--transition);
}

.matrix-card:hover {
  border-color: oklch(68% 0.18 48 / 0.5);
  background: oklch(22% 0.02 45);
  transform: translateY(-2px);
}

.matrix-style {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.matrix-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: oklch(90% 0.01 60);
  margin-bottom: 0.5rem;
}

.matrix-card p {
  font-size: 0.85rem;
  color: oklch(58% 0.02 60);
  line-height: 1.6;
  margin-bottom: 0.85rem;
}

.matrix-items {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.matrix-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: oklch(70% 0.02 60);
}

.matrix-item i {
  color: var(--color-accent);
  font-size: 0.65rem;
  flex-shrink: 0;
}

/* ── TESTIMONIALS ── */
.testimonials-section { background: var(--color-surface); }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.testimonial-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  position: relative;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.quote-mark {
  font-size: 2.5rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.3;
  font-family: Georgia, serif;
  margin-bottom: 0.5rem;
}

.testimonial-text {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-accent-dim);
  border: 2px solid oklch(68% 0.18 48 / 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
}

.author-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.author-tag {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.stars {
  color: var(--color-accent);
  font-size: 0.75rem;
  margin-bottom: 0.75rem;
}

/* ── FAQ ── */
.faq-section { background: oklch(95% 0.01 55); }

.faq-list { max-width: 780px; margin: 0 auto; }

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  background: var(--color-surface-raised);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.1rem 1.4rem;
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background var(--transition);
  cursor: pointer;
}

.faq-question:hover { background: oklch(94% 0.015 55); }

.faq-question.open { color: var(--color-accent); }

.faq-icon {
  color: var(--color-accent);
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-question.open .faq-icon { transform: rotate(180deg); }

.faq-answer {
  display: none;
  padding: 0 1.4rem 1.1rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
}

.faq-answer.open { display: block; }

/* ── CTA ── */
.cta-section {
  background: var(--color-bg-dark);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, oklch(68% 0.18 48 / 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner { position: relative; max-width: 640px; margin: 0 auto; }

.cta-section .section-title { color: var(--color-surface); margin-bottom: 1rem; }

.cta-section p {
  color: oklch(65% 0.02 60);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.cta-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── FOOTER ── */
.site-footer {
  background: oklch(11% 0.02 45);
  border-top: 1px solid var(--color-border-dark);
  padding: clamp(2.5rem, 5vw, 4rem) 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-accent);
  display: block;
  margin-bottom: 0.85rem;
}

.footer-about {
  color: oklch(52% 0.02 60);
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: oklch(70% 0.02 60);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }

.footer-links a {
  color: oklch(52% 0.02 60);
  font-size: 0.875rem;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid var(--color-border-dark);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-copy {
  color: oklch(40% 0.02 60);
  font-size: 0.8rem;
}

.footer-copy a { color: oklch(50% 0.02 60); transition: color var(--transition); }
.footer-copy a:hover { color: var(--color-accent); }

/* ── BREADCRUMB ── */
.breadcrumb {
  background: oklch(95% 0.01 55);
  border-bottom: 1px solid var(--color-border);
  padding: 0.6rem 0;
}

.breadcrumb-inner {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--color-muted);
}

.breadcrumb-inner a { color: var(--color-muted); transition: color var(--transition); }
.breadcrumb-inner a:hover { color: var(--color-accent); }
.breadcrumb-inner i { font-size: 0.65rem; color: oklch(75% 0.02 60); }
.breadcrumb-inner span { color: var(--color-text); font-weight: 500; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-panel { display: none; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .matrix-grid { grid-template-columns: repeat(2, 1fr); }
  .tips-layout { grid-template-columns: 1fr; }
  .tips-sticky { position: static; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .header-top { gap: 0.75rem; }
  .header-hot { display: none; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .scenario-grid { grid-template-columns: 1fr; }
  .matrix-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-actions { flex-direction: column; align-items: center; }
}

/* roulang page: category1 */
:root {
  --color-bg-dark: oklch(14% 0.02 45);
  --color-surface: oklch(97% 0.01 60);
  --color-accent: oklch(68% 0.18 48);
  --color-accent-rose: oklch(72% 0.14 20);
  --color-text: oklch(18% 0.02 45);
  --color-muted: oklch(52% 0.03 60);
  --color-border: oklch(88% 0.02 60);
  --color-card-bg: oklch(99% 0.005 60);
  --radius-card: 10px;
  --radius-inner: 6px;
  --shadow-card: 0 2px 8px oklch(14% 0.02 45 / 0.08);
  --shadow-hover: 0 6px 20px oklch(14% 0.02 45 / 0.14);
  --transition: 180ms ease;
  --section-pad: clamp(3rem, 6vw, 5rem);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-surface);
  margin: 0;
}

a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-rose); }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Header ── */
.site-header {
  background: var(--color-bg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px oklch(14% 0.02 45 / 0.4);
}

.header-top {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.01em;
  white-space: nowrap;
  text-decoration: none;
}
.site-logo:hover { color: oklch(75% 0.18 48); }

.header-search {
  position: relative;
  flex: 1;
  min-width: 160px;
  max-width: 320px;
}
.header-search input {
  width: 100%;
  padding: 0.4rem 2.2rem 0.4rem 0.85rem;
  border: 1px solid oklch(30% 0.02 45);
  border-radius: 20px;
  background: oklch(20% 0.02 45);
  color: oklch(90% 0.01 60);
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition);
}
.header-search input::placeholder { color: oklch(55% 0.02 45); }
.header-search input:focus { border-color: var(--color-accent); }
.search-icon {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  font-size: 0.8rem;
  pointer-events: none;
}

.header-hot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.hot-label {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.header-hot a {
  font-size: 0.78rem;
  color: oklch(72% 0.03 60);
  padding: 0.15rem 0.55rem;
  border: 1px solid oklch(28% 0.02 45);
  border-radius: 20px;
  transition: all var(--transition);
  white-space: nowrap;
}
.header-hot a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.nav-bar {
  background: oklch(18% 0.02 45);
  border-top: 1px solid oklch(22% 0.02 45);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-inner::-webkit-scrollbar { display: none; }
.nav-inner a {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: oklch(72% 0.03 60);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all var(--transition);
  text-decoration: none;
}
.nav-inner a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.nav-inner a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 700;
}

/* ── Breadcrumb ── */
.breadcrumb-bar {
  background: oklch(95% 0.01 60);
  border-bottom: 1px solid var(--color-border);
  padding: 0.55rem 0;
}
.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--color-muted);
}
.breadcrumb-bar a { color: var(--color-muted); }
.breadcrumb-bar a:hover { color: var(--color-accent); }
.breadcrumb-bar .sep { color: var(--color-border); }
.breadcrumb-bar .current { color: var(--color-text); font-weight: 500; }

/* ── Category Hero (Bento) ── */
.cat-hero {
  background: var(--color-bg-dark);
  padding: clamp(2.5rem, 5vw, 4rem) 0;
}
.bento-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1rem;
}
.bento-main {
  grid-column: 1;
  grid-row: 1 / 3;
  background: oklch(18% 0.03 45);
  border: 1px solid oklch(25% 0.03 45);
  border-radius: var(--radius-card);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.bento-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: oklch(68% 0.18 48 / 0.12);
  border: 1px solid oklch(68% 0.18 48 / 0.3);
  border-radius: 20px;
  padding: 0.25rem 0.75rem;
  margin-bottom: 1.25rem;
  width: fit-content;
}
.bento-main h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  line-height: 1.2;
  margin: 0 0 1rem;
}
.bento-main p {
  color: oklch(75% 0.02 60);
  font-size: 1rem;
  line-height: 1.7;
  margin: 0 0 1.75rem;
  max-width: 52ch;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: oklch(14% 0.02 45);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.7rem 1.6rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  width: fit-content;
}
.btn-primary:hover {
  background: oklch(72% 0.18 48);
  color: oklch(14% 0.02 45);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px oklch(68% 0.18 48 / 0.35);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.4rem;
  border-radius: 8px;
  border: 1.5px solid var(--color-accent);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  width: fit-content;
}
.btn-outline:hover {
  background: oklch(68% 0.18 48 / 0.1);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.bento-small {
  background: oklch(20% 0.025 45);
  border: 1px solid oklch(26% 0.025 45);
  border-radius: var(--radius-card);
  padding: 1.4rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.bento-small-icon {
  font-size: 1.5rem;
  color: var(--color-accent-rose);
  margin-bottom: 0.25rem;
}
.bento-small h3 {
  font-size: 1rem;
  font-weight: 700;
  color: oklch(90% 0.01 60);
  margin: 0;
}
.bento-small p {
  font-size: 0.85rem;
  color: oklch(65% 0.02 60);
  margin: 0;
  line-height: 1.5;
}
.bento-stat {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.bento-stat-label {
  font-size: 0.78rem;
  color: oklch(60% 0.02 60);
}

/* ── Section base ── */
.section { padding-block: var(--section-pad); }
.section-dark {
  background: var(--color-bg-dark);
  padding-block: var(--section-pad);
}
.section-warm {
  background: oklch(95% 0.015 55);
  padding-block: var(--section-pad);
}

.section-header {
  margin-bottom: 2.5rem;
}
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.6rem;
  line-height: 1.3;
}
.section-title-light {
  color: oklch(92% 0.01 60);
}
.section-sub {
  font-size: 0.95rem;
  color: var(--color-muted);
  max-width: 58ch;
  margin: 0;
}
.section-sub-light {
  color: oklch(65% 0.02 60);
}

/* ── Style Cards ── */
.style-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.style-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--transition);
}
.style-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.style-card-thumb {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.thumb-black { background: linear-gradient(135deg, oklch(18% 0.02 45), oklch(28% 0.03 45)); }
.thumb-nude { background: linear-gradient(135deg, oklch(82% 0.04 55), oklch(90% 0.03 50)); }
.thumb-lace { background: linear-gradient(135deg, oklch(72% 0.08 20), oklch(85% 0.05 15)); }
.thumb-velvet { background: linear-gradient(135deg, oklch(35% 0.06 300), oklch(50% 0.08 290)); }
.thumb-color { background: linear-gradient(135deg, oklch(68% 0.18 48), oklch(72% 0.14 20)); }
.thumb-pattern { background: linear-gradient(135deg, oklch(55% 0.05 200), oklch(70% 0.04 190)); }

.style-card-body { padding: 1.25rem; }
.style-card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.4rem;
}
.style-card-body p {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin: 0 0 0.85rem;
  line-height: 1.6;
}
.style-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-accent);
  background: oklch(68% 0.18 48 / 0.1);
  border: 1px solid oklch(68% 0.18 48 / 0.25);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
}
.tag-rose {
  color: var(--color-accent-rose);
  background: oklch(72% 0.14 20 / 0.1);
  border-color: oklch(72% 0.14 20 / 0.25);
}

/* ── Occasion Guide ── */
.occasion-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.occasion-item {
  display: flex;
  gap: 1rem;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.occasion-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: oklch(68% 0.18 48 / 0.4);
}
.occasion-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: oklch(68% 0.18 48 / 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  color: var(--color-accent);
}
.occasion-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.25rem;
}
.occasion-content p {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.55;
}

/* ── Material Guide ── */
.material-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}
.material-table th {
  background: oklch(93% 0.015 55);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.material-table td {
  padding: 0.85rem 1rem;
  font-size: 0.88rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.material-table tr:last-child td { border-bottom: none; }
.material-table tr:hover td { background: oklch(95% 0.01 58); }
.denier-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  background: oklch(68% 0.18 48 / 0.1);
  border: 1px solid oklch(68% 0.18 48 / 0.25);
  border-radius: 4px;
  padding: 0.1rem 0.45rem;
  font-variant-numeric: tabular-nums;
}

/* ── Testimonials ── */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.testimonial-card {
  background: oklch(20% 0.025 45);
  border: 1px solid oklch(28% 0.025 45);
  border-radius: var(--radius-card);
  padding: 1.4rem;
  position: relative;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  font-size: 3rem;
  color: oklch(68% 0.18 48 / 0.2);
  font-family: Georgia, serif;
  line-height: 1;
}
.testimonial-text {
  font-size: 0.9rem;
  color: oklch(80% 0.02 60);
  line-height: 1.65;
  margin: 0 0 1rem;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}
.av-a { background: oklch(68% 0.18 48 / 0.2); color: var(--color-accent); }
.av-b { background: oklch(72% 0.14 20 / 0.2); color: var(--color-accent-rose); }
.av-c { background: oklch(65% 0.1 200 / 0.2); color: oklch(65% 0.1 200); }
.author-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: oklch(88% 0.01 60);
}
.author-meta {
  font-size: 0.75rem;
  color: oklch(55% 0.02 60);
}
.star-row {
  display: flex;
  gap: 2px;
  margin-bottom: 0.65rem;
}
.star-row i { font-size: 0.75rem; color: var(--color-accent); }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
}
.faq-question:hover { background: oklch(94% 0.015 55); }
.faq-question i {
  color: var(--color-accent);
  font-size: 0.8rem;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 1.25rem 1.1rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
}
.faq-item.open .faq-answer { display: block; }

/* ── CTA Band ── */
.cta-band {
  background: linear-gradient(135deg, oklch(18% 0.03 45), oklch(22% 0.04 40));
  border-top: 1px solid oklch(28% 0.03 45);
  border-bottom: 1px solid oklch(28% 0.03 45);
  padding-block: var(--section-pad);
  text-align: center;
}
.cta-band h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.cta-band p {
  color: oklch(72% 0.02 60);
  font-size: 1rem;
  max-width: 52ch;
  margin: 0 auto 1.75rem;
  line-height: 1.65;
}
.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Footer ── */
.site-footer {
  background: var(--color-bg-dark);
  border-top: 1px solid oklch(22% 0.02 45);
  padding-top: 3rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid oklch(22% 0.02 45);
}
.footer-logo {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 0.85rem;
}
.footer-about {
  font-size: 0.85rem;
  color: oklch(55% 0.02 60);
  line-height: 1.65;
  margin: 0 0 1rem;
  max-width: 38ch;
}
.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: oklch(70% 0.02 60);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.footer-links a {
  font-size: 0.85rem;
  color: oklch(55% 0.02 60);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-copy {
  font-size: 0.78rem;
  color: oklch(40% 0.02 60);
  margin: 0;
}
.footer-copy a { color: oklch(48% 0.02 60); }
.footer-copy a:hover { color: var(--color-accent); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .style-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .bento-grid { grid-template-columns: 1fr; }
  .bento-main { grid-row: auto; }
  .occasion-list { grid-template-columns: 1fr; }
  .header-hot { display: none; }
  .material-table { font-size: 0.82rem; }
  .material-table th, .material-table td { padding: 0.65rem 0.75rem; }
}
@media (max-width: 640px) {
  .style-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-search { max-width: 100%; }
  .bento-main { padding: 1.75rem 1.25rem; }
}