/* roulang page: index */
:root {
  --bg: #EDEBE4;
  --bg-light: #F5F4EF;
  --card: #FFFFFF;
  --text: #1A201E;
  --text-secondary: #55605A;
  --text-aux: #8A928C;
  --line: #D8D8D0;
  --primary: #0B5D4F;
  --primary-dark: #09473D;
  --primary-light: #E3EFEC;
  --accent: #C8953E;
  --accent-light: #D9A94E;
  --dark: #101A18;
  --dark-text: #EAEAE2;
  --badge-bg: #ECEDE8;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', 'Consolas', 'Roboto Mono', monospace;
  --radius: 4px;
  --radius-btn: 2px;
  --radius-pill: 999px;
  --transition: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  --container: 1200px;
  --space: 112px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text); line-height: 1.8; font-size: 16px; overflow-x: hidden; }
img { max-width: 100%; display: block; border: 0; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition); }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
h1, h2, h3, h4, h5 { font-family: var(--font-serif); color: var(--text); line-height: 1.3; font-weight: 700; }
h1 { font-size: 72px; line-height: 1.15; letter-spacing: -0.01em; }
h2 { font-size: 42px; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: 24px; line-height: 1.35; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 28px; font-size: 15px; font-weight: 500; border-radius: var(--radius-btn); border: 1px solid transparent; line-height: 1; white-space: nowrap; transition: all var(--transition); text-align: center; }
.btn-primary { background: var(--primary); color: #FFFFFF; }
.btn-primary:hover { background: var(--primary-dark); color: #FFFFFF; transform: translateY(-2px); }
.btn-outline { background: rgba(255,255,255,0.9); color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--dark); font-weight: 600; height: 56px; padding: 0 46px; font-size: 16px; }
.btn-accent:hover { background: var(--accent-light); color: var(--dark); transform: translateY(-2px); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.section-kicker { font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: 0.08em; text-transform: uppercase; display: block; margin-bottom: 10px; }
.section-head { margin-bottom: 48px; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; }
.section-head h2 { margin-bottom: 10px; }
.section-head p { color: var(--text-secondary); font-size: 16px; max-width: 560px; line-height: 1.7; }
.text-link { font-size: 14px; color: var(--primary); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; transition: color var(--transition), gap var(--transition); }
.text-link:hover { color: var(--primary-dark); gap: 8px; }
@media (max-width: 768px) {
  h1 { font-size: 40px; }
  h2 { font-size: 30px; }
  h3 { font-size: 22px; }
  .container { padding: 0 16px; }
  .section-head { flex-direction: column; align-items: flex-start; margin-bottom: 32px; }
  .section-head p { font-size: 14px; }
}
.countdown-bar { background: var(--dark); color: var(--dark-text); min-height: 48px; display: flex; align-items: center; font-size: 13px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.countdown-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; min-height: 48px; }
.countdown-left { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.countdown-label { color: var(--accent); font-weight: 500; letter-spacing: 0.02em; }
.countdown-sep { color: rgba(234,234,226,0.65); }
.countdown-time { display: flex; align-items: center; gap: 4px; font-family: var(--font-mono); }
.time-unit { display: inline-flex; align-items: center; gap: 4px; }
.time-num { display: inline-block; min-width: 30px; text-align: center; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.08); border-radius: 3px; padding: 3px 7px; font-size: 14px; color: #fff; font-weight: 600; font-family: var(--font-mono); }
.time-label { font-family: var(--font-sans); font-size: 12px; color: rgba(234,234,226,0.6); margin-left: 2px; }
.time-colon { color: rgba(234,234,226,0.5); font-weight: 400; }
.countdown-link { color: rgba(234,234,226,0.7); font-size: 12px; text-decoration: underline; text-underline-offset: 4px; transition: color var(--transition); }
.countdown-link:hover { color: var(--accent); }
@media (max-width: 768px) {
  .countdown-label { display: none; }
  .day-unit, .day-colon { display: none !important; }
  .countdown-link { font-size: 11px; }
}
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(237,235,228,0.92); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--text); letter-spacing: 0.01em; display: inline-flex; align-items: center; gap: 8px; }
.brand:hover { color: var(--primary); }
.brand-mark { width: 28px; height: 28px; border: 2px solid var(--accent); border-radius: 50% 50% 50% 8px; transform: rotate(-45deg); display: inline-block; position: relative; flex-shrink: 0; }
.brand-mark::after { content: ''; position: absolute; left: 6px; top: 6px; width: 12px; height: 12px; border: 2px solid var(--accent); border-radius: 50%; }
.main-nav { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 15px; color: var(--text-secondary); position: relative; padding: 6px 2px; border-bottom: 2px solid transparent; transition: color var(--transition), border-color var(--transition); }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 500; border-bottom-color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; align-items: center; justify-content: center; border-radius: var(--radius); transition: background var(--transition); }
.nav-toggle:hover { background: rgba(11,93,79,0.08); }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: background var(--transition); }
.nav-toggle:hover span { background: var(--primary); }
.nav-close { display: none; }
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .header-login { display: none; }
  .main-nav { position: fixed; top: 0; right: -100%; width: 100%; height: 100vh; background: #fff; flex-direction: column; gap: 0; padding: 84px 24px 24px; transition: right 0.35s ease; z-index: 300; box-shadow: -10px 0 40px rgba(0,0,0,0.08); overflow-y: auto; }
  .main-nav.open { right: 0; }
  .nav-link { font-size: 18px; padding: 0; width: 100%; text-align: left; border-bottom: 1px solid var(--line); padding: 22px 0; font-weight: 500; color: var(--text); border-bottom: 1px solid var(--line); }
  .nav-link.active { color: var(--primary); border-bottom: 1px solid var(--line); }
  .nav-close { display: block; position: absolute; top: 22px; right: 24px; font-size: 24px; color: var(--text); width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 50%; transition: background var(--transition), color var(--transition); }
  .nav-close:hover { background: var(--badge-bg); color: var(--primary); }
}
.hero { position: relative; min-height: 640px; display: flex; align-items: center; background-size: cover; background-position: center 30%; background-color: var(--dark); }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(115deg, rgba(16,26,24,0.85) 0%, rgba(16,26,24,0.45) 65%, rgba(16,26,24,0.2) 100%); }
.hero-inner { position: relative; z-index: 2; padding: 100px 0; }
.hero h1 { color: #FFFFFF; max-width: 760px; margin-bottom: 24px; text-shadow: 0 2px 20px rgba(0,0,0,0.2); }
.hero-subtitle { font-size: 20px; color: rgba(234,234,226,0.88); max-width: 560px; line-height: 1.75; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; margin-bottom: 52px; flex-wrap: wrap; }
.hero .btn-outline { background: transparent; color: #FFFFFF; border-color: rgba(255,255,255,0.5); }
.hero .btn-outline:hover { background: rgba(255,255,255,0.1); color: #FFFFFF; border-color: #FFFFFF; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-tags .tag { font-size: 12px; color: rgba(234,234,226,0.8); background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14); padding: 5px 14px; border-radius: var(--radius-pill); }
@media (max-width: 768px) {
  .hero { min-height: 540px; }
  .hero-inner { padding: 72px 0; }
  .hero h1 { font-size: 38px; line-height: 1.2; }
  .hero-subtitle { font-size: 16px; line-height: 1.7; margin-bottom: 32px; }
  .hero-actions { flex-direction: column; gap: 12px; margin-bottom: 36px; }
  .hero-actions .btn { width: 100%; }
  .hero-tags .tag { font-size: 11px; padding: 4px 12px; }
}
.feature-section { padding: var(--space) 0; }
.feature-list { border-top: 1px solid var(--line); }
.feature-item { display: grid; grid-template-columns: 120px 1fr 1.7fr; gap: 24px 48px; padding: 44px 0; border-bottom: 1px solid var(--line); transition: padding-left var(--transition), border-color var(--transition); align-items: start; }
.feature-item:hover { padding-left: 12px; border-color: var(--primary); }
.feature-num { font-family: var(--font-mono); font-size: 42px; font-weight: 700; color: var(--accent); line-height: 1; transition: color var(--transition); }
.feature-item:hover .feature-num { color: var(--primary); }
.feature-item h3 { margin-bottom: 10px; }
.feature-item p { color: var(--text-secondary); font-size: 15px; line-height: 1.85; }
@media (max-width: 1024px) {
  .feature-item { grid-template-columns: 80px 1fr; gap: 12px 24px; }
  .feature-item p { grid-column: 2; }
}
@media (max-width: 768px) {
  .feature-item { grid-template-columns: 1fr; gap: 8px; padding: 32px 0; }
  .feature-num { font-size: 30px; }
  .feature-item:hover { padding-left: 6px; }
  .feature-item p { grid-column: 1; }
}
.gallery-section { padding: var(--space) 0; }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 230px; gap: 16px; }
.gallery-card { position: relative; overflow: hidden; border-radius: var(--radius); display: block; background: var(--primary-light); }
.gallery-card.card-1 { grid-column: 1 / 3; grid-row: 1 / 3; }
.gallery-card.card-2 { grid-column: 3 / 5; grid-row: 1 / 2; }
.gallery-card.card-3 { grid-column: 3 / 4; grid-row: 2 / 3; }
.gallery-card.card-4 { grid-column: 4 / 5; grid-row: 2 / 3; }
.gallery-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.gallery-overlay { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px; background: linear-gradient(to top, rgba(0,0,0,0.7), transparent); display: flex; flex-direction: column; gap: 8px; }
.gallery-tag { font-size: 12px; color: #FFFFFF; background: rgba(255,255,255,0.18); display: inline-flex; align-self: flex-start; padding: 3px 12px; border-radius: var(--radius-pill); letter-spacing: 0.04em; }
.gallery-overlay h3 { color: #FFFFFF; font-size: 18px; line-height: 1.4; font-weight: 600; transition: transform 0.4s ease; }
.gallery-card:hover img { transform: scale(1.04); }
.gallery-card:hover .gallery-overlay { background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0.15)); }
.gallery-card:hover .gallery-overlay h3 { transform: translateY(-6px); }
@media (max-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 140px; gap: 12px; }
  .gallery-card.card-1 { grid-column: 1 / 3; grid-row: 1 / 3; }
  .gallery-card.card-2 { grid-column: 1 / 3; grid-row: 3 / 4; }
  .gallery-card.card-3 { grid-column: 1 / 2; grid-row: 4 / 5; }
  .gallery-card.card-4 { grid-column: 2 / 3; grid-row: 4 / 5; }
  .gallery-overlay { padding: 14px; }
  .gallery-overlay h3 { font-size: 15px; }
}
.cta-section { background: var(--dark); padding: 96px 0; }
.cta-inner { text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { color: var(--dark-text); font-size: 40px; margin-bottom: 16px; }
.cta-inner p { color: rgba(234,234,226,0.7); font-size: 16px; margin-bottom: 40px; line-height: 1.7; }
.cta-divider { width: 1px; height: 44px; background: rgba(234,234,226,0.15); margin: 32px auto; }
.cta-note { font-size: 12px; color: rgba(234,234,226,0.6); line-height: 2.2; margin-top: 20px; }
.cta-note span { display: inline-block; margin: 0 8px; }
@media (max-width: 768px) {
  .cta-section { padding: 72px 0; }
  .cta-inner h2 { font-size: 30px; }
  .cta-inner .btn-accent { width: 100%; max-width: 320px; }
}
.faq-section { padding: var(--space) 0; background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.faq-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; }
.faq-left h2 { margin-bottom: 12px; }
.faq-left p { color: var(--text-aux); font-size: 14px; margin-bottom: 24px; }
.faq-list { border-bottom: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 24px 0; font-size: 18px; font-weight: 500; color: var(--text); font-family: var(--font-sans); text-align: left; transition: color var(--transition); }
.faq-question:hover { color: var(--primary); }
.faq-icon { position: relative; width: 20px; height: 20px; flex-shrink: 0; transition: transform 0.25s ease; }
.faq-icon::before, .faq-icon::after { content: ''; position: absolute; background: var(--text-aux); transition: background var(--transition); }
.faq-icon::before { width: 14px; height: 2px; top: 9px; left: 3px; }
.faq-icon::after { width: 2px; height: 14px; top: 3px; left: 9px; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-icon::before, .faq-item.open .faq-icon::after { background: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.3s ease; padding: 0; font-size: 15px; color: var(--text-secondary); line-height: 1.9; }
.faq-item.open .faq-answer { max-height: 600px; padding-bottom: 24px; }
@media (max-width: 1024px) {
  .faq-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .faq-question { font-size: 16px; padding: 20px 0; }
  .faq-answer { font-size: 14px; }
}
.news-section { padding: var(--space) 0; }
.news-list { border-top: 1px solid var(--line); }
.news-row { display: grid; grid-template-columns: auto 1fr auto; grid-template-rows: auto auto; grid-template-areas: "badge title date" "badge summary date"; gap: 4px 24px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: center; transition: padding-left var(--transition), border-color var(--transition); }
.news-row:hover { padding-left: 10px; }
.news-badge { grid-area: badge; font-size: 12px; background: var(--badge-bg); color: var(--text-aux); padding: 4px 14px; border-radius: var(--radius-pill); align-self: center; white-space: nowrap; transition: background var(--transition), color var(--transition); }
.news-row:hover .news-badge { background: var(--primary-light); color: var(--primary); }
.news-title { grid-area: title; font-size: 20px; font-weight: 600; color: var(--text); line-height: 1.5; transition: color var(--transition); }
.news-row:hover .news-title { color: var(--primary); }
.news-date { grid-area: date; font-size: 14px; color: var(--text-aux); white-space: nowrap; font-family: var(--font-mono); }
.news-summary { grid-area: summary; font-size: 14px; color: var(--text-aux); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; line-height: 1.6; }
.news-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 180px; gap: 10px; color: var(--text-aux); border-bottom: 1px solid var(--line); text-align: center; padding: 0 24px; }
.empty-icon { width: 48px; height: 48px; border: 1px solid var(--line); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--text-aux); margin-bottom: 6px; }
.news-empty p:first-of-type { font-size: 16px; font-weight: 500; color: var(--text-aux); }
.news-empty p:last-of-type { font-size: 13px; color: var(--text-aux); opacity: 0.75; }
@media (max-width: 768px) {
  .news-row { grid-template-columns: 1fr auto; grid-template-areas: "badge date" "title title" "summary summary"; gap: 6px 16px; padding: 20px 0; }
  .news-title { font-size: 17px; }
  .news-date { font-size: 12px; }
  .news-summary { font-size: 13px; }
  .news-row:hover { padding-left: 6px; }
}
.site-footer { background: var(--bg-light); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr; gap: 48px; padding: 64px 0 40px; }
.footer-brand .footer-logo { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-aux); line-height: 1.9; max-width: 280px; }
.footer-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 18px; color: var(--text); font-family: var(--font-sans); letter-spacing: 0.02em; }
.footer-col a { display: block; font-size: 14px; color: var(--text-aux); padding: 5px 0; transition: color var(--transition); }
.footer-col a:hover { color: var(--primary); }
.footer-col p { font-size: 14px; color: var(--text-aux); line-height: 2.2; }
.footer-bottom { border-top: 1px solid var(--line); padding: 20px 0; }
.footer-bottom p { font-size: 12px; color: var(--text-aux); text-align: center; letter-spacing: 0.02em; }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; padding: 48px 0 32px; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom p { font-size: 11px; }
}

/* roulang page: article */
:root {
  --paper: #EDEBE4;
  --card: #FFFFFF;
  --text: #1A201E;
  --text-secondary: #55605A;
  --text-muted: #8A928C;
  --line: #D8D8D0;
  --brand: #0B5D4F;
  --brand-dark: #09473D;
  --accent: #C8953E;
  --dark: #101A18;
  --dark-text: #EAEAE2;
  --badge-bg: #ECEDE8;
  --radius-card: 4px;
  --radius-btn: 2px;
  --radius-pill: 999px;
  --font-title: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  --transition: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}
a { color: var(--brand); text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: var(--font-body); cursor: pointer; border: none; background: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-btn);
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--brand); border: 1px solid var(--brand); }
.btn-outline:hover { background: rgba(11,93,79,0.08); transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--text); height: 52px; padding: 0 48px; }
.btn-accent:hover { background: #D4A64B; transform: translateY(-2px); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(237,235,228,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
  white-space: nowrap;
}
.brand-mark {
  width: 30px;
  height: 30px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--brand);
  border-radius: 50%;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-link {
  font-size: 15px;
  color: var(--text-secondary);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-link:hover,
.nav-link.active { color: var(--brand); }
.nav-link.active::after { transform: scaleX(1); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: background 0.2s;
}
.nav-close {
  display: none;
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 300;
  width: 44px;
  height: 44px;
  font-size: 20px;
  color: var(--text);
  border-radius: var(--radius-btn);
}
.nav-close:hover { background: var(--badge-bg); }

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 32px 0 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .current {
  color: var(--text-secondary);
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.breadcrumb .sep { color: var(--text-muted); }

.article-head h1 {
  font-family: var(--font-title);
  font-size: 42px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.article-meta .dot { opacity: 0.5; }

.article-body {
  padding: 28px 0 48px;
}
.rich-content {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
}
.rich-content h2 {
  font-family: var(--font-title);
  font-size: 28px;
  font-weight: 700;
  margin: 48px 0 16px;
  line-height: 1.35;
}
.rich-content h3 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  margin: 36px 0 12px;
  line-height: 1.4;
}
.rich-content p { margin-bottom: 20px; }
.rich-content strong { color: var(--text); font-weight: 600; }
.rich-content ul,
.rich-content ol { margin: 0 0 20px 24px; padding: 0; }
.rich-content li { margin-bottom: 8px; }
.rich-content blockquote {
  background: #F2F1EC;
  border-left: 3px solid var(--brand);
  padding: 20px 24px;
  margin: 28px 0;
  color: var(--text-secondary);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
}
.rich-content img {
  width: 100%;
  border-radius: var(--radius-card);
  margin: 28px 0 8px;
}
.rich-content figcaption,
.rich-content .image-caption {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.rich-content a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.rich-content a:hover { color: var(--brand-dark); }

.post-footer {
  padding: 28px 0 56px;
  border-top: 1px solid var(--line);
  margin-top: 16px;
}
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--badge-bg);
  color: var(--text-secondary);
  font-size: 13px;
  transition: color var(--transition), background var(--transition);
}
.tag:hover { color: var(--brand); background: #fff; }
.post-links {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.post-link {
  font-size: 15px;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.post-link:hover { color: var(--brand); }
.post-link .arrow { margin: 0 4px; }

.related-section {
  padding: 72px 0 24px;
  border-top: 1px solid var(--line);
}
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}
.section-head h2 {
  font-family: var(--font-title);
  font-size: 32px;
  font-weight: 700;
}
.more-link {
  font-size: 14px;
  color: var(--text-muted);
}
.more-link:hover { color: var(--brand); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  display: block;
}
.related-card:hover {
  border-color: var(--brand);
  transform: translateY(-4px);
}
.related-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #D8D8D0;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-info {
  padding: 20px 24px 22px;
}
.related-info h3 {
  font-family: var(--font-title);
  font-size: 18px;
  line-height: 1.5;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-info .date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

.cta-section {
  background: var(--dark) linear-gradient(rgba(16,26,24,0.82), rgba(16,26,24,0.82)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: var(--dark-text);
  padding: 80px 0;
  text-align: center;
  margin-top: 56px;
}
.cta-section h2 {
  font-family: var(--font-title);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 15px;
  color: rgba(234,234,226,0.7);
  max-width: 620px;
  margin: 0 auto 32px;
}

.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding: 56px 0 40px;
}
.footer-logo {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 12px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 300px;
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 2.2;
}
.footer-col a:hover { color: var(--brand); }
.footer-col p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

.not-found {
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
}
.not-found p {
  font-size: 20px;
  margin-bottom: 24px;
}

@media (max-width: 1024px) {
  .article-head h1 { font-size: 38px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { gap: 32px; }
}

@media (max-width: 768px) {
  .container,
  .container-narrow { padding: 0 16px; }
  .header-inner { gap: 12px; }
  .brand { font-size: 17px; }
  .header-actions .btn-outline { display: none; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 200;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 80px 24px 24px;
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
    gap: 0;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link {
    font-size: 18px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
    white-space: normal;
  }
  .nav-link::after { display: none; }
  .nav-close { display: block; }
  .nav-open .main-nav { transform: translateX(0); }
  .breadcrumb { padding: 20px 0 12px; }
  .article-head h1 { font-size: 32px; }
  .article-meta { gap: 8px; font-size: 12px; }
  .rich-content { font-size: 16px; line-height: 1.85; }
  .rich-content h2 { font-size: 24px; }
  .rich-content h3 { font-size: 20px; }
  .related-grid { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .section-head h2 { font-size: 28px; }
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 40px 0 24px; }
  .footer-brand p { max-width: 100%; }
}

/* roulang page: category1 */
:root {
  --bg: #EDEBE4;
  --bg-card: #FFFFFF;
  --bg-deep: #101A18;
  --text: #1A201E;
  --text-sub: #55605A;
  --text-light: #8A928C;
  --line: #D8D8D0;
  --brand: #0B5D4F;
  --brand-dark: #09473D;
  --brand-soft: rgba(11, 93, 79, 0.08);
  --accent: #C8953E;
  --accent-hover: #dba94f;
  --cream: #EAEAE2;
  --radius-card: 4px;
  --radius-btn: 2px;
  --radius-pill: 999px;
  --shadow-nav: 0 4px 24px rgba(16, 26, 24, 0.06);
  --container: 1200px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --space-section: 112px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}
a:hover {
  color: var(--brand-dark);
}
button {
  font-family: inherit;
}
.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}
section[id] {
  scroll-margin-top: 84px;
}
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  border-color: var(--brand);
  color: var(--brand);
  background: transparent;
}
.btn-outline:hover {
  background: var(--brand-soft);
  color: var(--brand-dark);
}
.btn-ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
  background: transparent;
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.btn-amber {
  background: var(--accent);
  color: var(--text);
  height: 56px;
  padding: 0 48px;
  font-size: 16px;
}
.btn-amber:hover {
  background: var(--accent-hover);
  color: var(--text);
  transform: translateY(-2px);
}
.btn-sm {
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(237, 235, 228, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(26, 32, 30, 0.08);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  white-space: nowrap;
}
.brand:hover {
  color: var(--text);
}
.brand-mark {
  width: 28px;
  height: 28px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  position: relative;
  transform: rotate(18deg);
  flex: none;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px 2px 4px 7px;
  border: 1.5px solid var(--brand);
  border-radius: 50%;
  opacity: 0.55;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  padding: 24px 2px;
}
.nav-link:hover {
  color: var(--brand);
}
.nav-link.active {
  color: var(--brand);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: 4px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}
.nav-toggle:hover span {
  background: var(--brand);
}
.nav-close {
  display: none;
}

@media (max-width: 767px) {
  .container {
    width: min(100% - 32px, var(--container));
  }
  .main-nav {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0;
    padding: 72px 24px 24px;
    transform: translateX(100%);
    transition: transform 0.3s var(--ease);
  }
  .main-nav.open {
    transform: translateX(0);
  }
  .nav-link {
    width: 100%;
    padding: 20px 0;
    font-size: 17px;
    border-bottom: 1px solid var(--line);
    text-align: left;
  }
  .nav-link.active::after {
    display: none;
  }
  .nav-link.active {
    color: var(--brand-dark);
    background: rgba(11, 93, 79, 0.04);
    padding-left: 14px;
  }
  .nav-close {
    display: block;
    position: absolute;
    top: 14px;
    right: 14px;
    width: 44px;
    height: 44px;
    background: none;
    border: 0;
    font-size: 20px;
    color: var(--text);
    cursor: pointer;
    border-radius: 4px;
  }
  .nav-close:hover {
    background: var(--bg);
    color: var(--brand);
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-login {
    display: none;
  }
}

.cat-hero {
  position: relative;
  padding: 96px 0 84px;
  background: linear-gradient(78deg, rgba(10, 26, 23, 0.92) 0%, rgba(11, 93, 79, 0.82) 100%), url("/assets/images/backpic/back-1.png") center / cover no-repeat;
  color: #fff;
}
.cat-hero .crumb {
  font-size: 13px;
  color: rgba(234, 234, 226, 0.7);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.cat-hero .crumb a {
  color: rgba(234, 234, 226, 0.8);
  transition: color 0.25s var(--ease);
}
.cat-hero .crumb a:hover {
  color: #fff;
}
.cat-hero .crumb .sep {
  opacity: 0.5;
}
.cat-hero h1 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: 62px;
  line-height: 1.15;
  font-weight: 900;
  margin: 24px 0 14px;
  letter-spacing: -0.01em;
}
.cat-hero .lead {
  font-size: 16px;
  max-width: 620px;
  color: rgba(234, 234, 226, 0.82);
  line-height: 1.9;
}
.cat-hero .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}
.cat-hero .hero-caps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 42px;
}
.cat-hero .hero-caps span {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(234, 234, 226, 0.85);
  letter-spacing: 0.02em;
}

.cat-section {
  padding: var(--space-section) 0;
}
.cat-section.alt {
  background: var(--bg-card);
}
.section-head {
  margin-bottom: 52px;
  max-width: 720px;
}
.section-head .tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--brand);
  background: rgba(11, 93, 79, 0.08);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}
.section-head h2 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: 40px;
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section-head .lead {
  margin-top: 16px;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.9;
}

.scene-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 64px;
  align-items: center;
}
.scene-note {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.9;
  margin-top: 20px;
  border-left: 3px solid var(--accent);
  padding-left: 18px;
}
.scene-list {
  border-top: 1px solid var(--line);
}
.scene-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease);
}
.scene-item:hover {
  background: rgba(11, 93, 79, 0.03);
}
.scene-item .num {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.6;
}
.scene-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.scene-item p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

.entry-wrap {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 64px;
  align-items: center;
}
.entry-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  align-self: stretch;
  min-height: 400px;
  background: var(--line);
}
.entry-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.entry-list {
  border-top: 1px solid var(--line);
}
.entry-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 20px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease);
}
.entry-row:hover {
  background: rgba(11, 93, 79, 0.03);
}
.entry-row .idx {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 32px;
  font-weight: 700;
  color: var(--brand);
  line-height: 1;
  padding-top: 4px;
}
.entry-row h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.entry-row p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.85;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 36px 32px 32px;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.step-card:hover {
  border-color: var(--brand);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(26, 32, 30, 0.06);
}
.step-card .step-no {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.step-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 14px 0 8px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.85;
}

.trouble-wrap {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 64px;
  align-items: center;
}
.trouble-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  align-self: stretch;
  min-height: 380px;
  background: var(--line);
}
.trouble-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.trouble-list {
  border-top: 1px solid var(--line);
}
.trouble-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease);
}
.trouble-row:hover {
  background: rgba(11, 93, 79, 0.03);
}
.trouble-row .problem {
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.trouble-row .problem::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
  margin-top: 11px;
}
.trouble-row .solution {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.85;
}

.safety-block {
  background: var(--bg-deep);
  color: var(--cream);
}
.safety-head h2 {
  color: var(--cream);
}
.safety-head .tag {
  color: var(--accent);
  background: rgba(200, 149, 62, 0.12);
}
.safety-head .lead {
  color: rgba(234, 234, 226, 0.65);
}
.safety-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.safety-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 28px;
  border: 1px solid rgba(234, 234, 226, 0.1);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.safety-item:hover {
  border-color: rgba(200, 149, 62, 0.4);
  transform: translateY(-3px);
}
.safety-icon {
  width: 30px;
  height: 30px;
  border: 1px solid rgba(200, 149, 62, 0.55);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 13px;
  flex: none;
  margin-top: 3px;
}
.safety-item h3 {
  color: var(--cream);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.safety-item p {
  color: rgba(234, 234, 226, 0.62);
  font-size: 14px;
  line-height: 1.8;
}

.faq-wrap {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: 64px;
  align-items: start;
}
.faq-side .link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 15px;
  font-weight: 500;
}
.faq-side .link-arrow:hover {
  gap: 10px;
}
.faq-list {
  border-top: 1px solid var(--line);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 0;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.25s var(--ease);
}
.faq-q:hover {
  color: var(--brand);
}
.faq-q .plus {
  font-size: 22px;
  font-weight: 300;
  color: var(--brand);
  line-height: 1;
  transition: transform 0.25s var(--ease), color 0.25s var(--ease);
  flex: none;
}
.faq-item.open .plus {
  transform: rotate(45deg);
  color: var(--accent);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease);
}
.faq-a p {
  padding: 0 0 24px;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.85;
  max-width: 620px;
}

.support-cta {
  background: var(--bg-card);
  border-top: 1px solid var(--line);
  text-align: center;
  padding: 88px 0;
}
.support-cta h2 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 16px;
}
.support-cta p {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.9;
}
.support-cta .btn {
  margin-inline: auto;
}
.support-cta .micro-note {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 18px;
}

.site-footer {
  background: #F4F2EC;
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 4fr 2fr 3fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
.footer-logo {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}
.footer-col a {
  display: block;
  color: var(--text-sub);
  font-size: 14px;
  padding: 4px 0;
}
.footer-col a:hover {
  color: var(--brand);
}
.footer-col p {
  color: var(--text-sub);
  font-size: 14px;
  padding: 4px 0;
  line-height: 1.7;
}
.footer-bottom {
  padding: 24px 0;
}
.footer-bottom p {
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
}

@media (max-width: 1023px) {
  :root {
    --space-section: 88px;
  }
  .scene-grid,
  .entry-wrap,
  .trouble-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .entry-image,
  .trouble-image {
    min-height: 300px;
  }
  .faq-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .cat-hero h1 {
    font-size: 52px;
  }
  .section-head h2 {
    font-size: 36px;
  }
}

@media (max-width: 767px) {
  :root {
    --space-section: 64px;
  }
  .cat-hero {
    padding: 64px 0 56px;
  }
  .cat-hero h1 {
    font-size: 38px;
    margin-top: 18px;
  }
  .cat-hero .lead {
    font-size: 15px;
  }
  .cat-hero .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cat-hero .hero-actions .btn {
    width: 100%;
  }
  .section-head h2 {
    font-size: 30px;
  }
  .step-grid {
    grid-template-columns: 1fr;
  }
  .safety-grid {
    grid-template-columns: 1fr;
  }
  .entry-row {
    grid-template-columns: 48px 1fr;
    gap: 14px;
    padding: 24px 0;
  }
  .entry-row .idx {
    font-size: 24px;
  }
  .trouble-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 22px 0;
  }
  .scene-item {
    grid-template-columns: 44px 1fr;
    gap: 14px;
    padding: 22px 0;
  }
  .faq-q {
    font-size: 15px;
    padding: 18px 0;
  }
  .support-cta {
    padding: 64px 0;
  }
  .support-cta h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  .btn-amber {
    width: 100%;
    padding: 0 24px;
  }
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root {
  --bg: #EDEBE4;
  --bg-light: #F5F4EF;
  --card: #FFFFFF;
  --text: #1A201E;
  --text-secondary: #55605A;
  --text-muted: #8A928C;
  --line: #D8D8D0;
  --brand: #0B5D4F;
  --brand-dark: #09473D;
  --brand-soft: #E2EDE9;
  --accent: #C8953E;
  --accent-light: #DCA95C;
  --dark: #101A18;
  --dark-text: #EAEAE2;
  --badge-bg: #ECEDE8;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --radius-card: 4px;
  --radius-btn: 2px;
  --radius-pill: 999px;
  --transition: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  --shadow-nav: 0 2px 12px rgba(16, 26, 24, 0.06);
  --container: 1200px;
  --space-section: 96px;
}

/* ============ Reset & 基础 ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--brand-dark); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
h1, h2, h3, h4 { font-family: var(--font-serif); line-height: 1.25; color: var(--text); font-weight: 700; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }

/* ============ 容器与板块 ============ */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section-white { background: var(--card); }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head h2 { font-size: 40px; margin-bottom: 14px; letter-spacing: 0.01em; }
.section-head p { color: var(--text-secondary); font-size: 16px; line-height: 1.7; }
.section-head-center { margin-left: auto; margin-right: auto; text-align: center; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px; font-weight: 600; letter-spacing: 0.03em;
  border: 1px solid transparent;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  text-align: center; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-outline { background: transparent; border-color: var(--brand); color: var(--brand); }
.btn-outline:hover { background: var(--brand-soft); color: var(--brand-dark); }
.btn-accent { background: var(--accent); color: #1A201E; }
.btn-accent:hover { background: var(--accent-light); color: #1A201E; }
.btn-lg { height: 56px; padding: 0 48px; font-size: 16px; }
.btn-sm { height: 38px; padding: 0 16px; font-size: 13px; }

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-serif); font-size: 18px; font-weight: 700;
  color: var(--text); flex-shrink: 0;
}
.brand:hover { color: var(--text); }
.brand-mark {
  width: 26px; height: 26px; flex-shrink: 0;
  border: 1.5px solid var(--accent); border-radius: 50%;
  position: relative; display: inline-block;
}
.brand-mark::before {
  content: ''; position: absolute; inset: 5px;
  border-radius: 50%;
  border: 1.5px solid var(--brand);
  border-top-color: transparent; border-right-color: transparent;
  transform: rotate(20deg);
}
.brand-mark::after {
  content: ''; position: absolute;
  left: 50%; top: 4px; bottom: 4px; width: 1px;
  background: var(--brand);
  transform: translateX(-50%);
}
.main-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; margin-right: 24px; }
.nav-link {
  position: relative;
  font-size: 14px; font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--brand); }
.nav-link.active { color: var(--brand); }
.nav-link.active::after {
  content: ''; position: absolute;
  left: 0; right: 0; bottom: -2px; height: 2px;
  background: var(--brand);
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-login { white-space: nowrap; }
.nav-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-btn);
  border: 1px solid var(--line);
  background: var(--card);
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 1px; }
.nav-close { display: none; }

/* ============ 页面首屏 Hero ============ */
.page-hero {
  position: relative;
  padding: 96px 0;
  background-size: cover; background-position: center;
  color: var(--dark-text);
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(16, 26, 24, 0.92) 0%, rgba(16, 26, 24, 0.78) 50%, rgba(11, 93, 79, 0.62) 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px;
  color: rgba(234, 234, 226, 0.65);
  margin-bottom: 28px;
}
.breadcrumb a { color: rgba(234, 234, 226, 0.85); transition: color 0.2s ease; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 {
  font-size: 48px; color: #fff;
  max-width: 780px; line-height: 1.25;
  margin-bottom: 18px;
}
.page-hero-desc {
  font-size: 17px; color: rgba(234, 234, 226, 0.82);
  max-width: 620px; line-height: 1.85;
  margin-bottom: 0;
}
.page-jump { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.page-jump a {
  font-size: 13px; color: rgba(234, 234, 226, 0.85);
  border: 1px solid rgba(234, 234, 226, 0.25);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  transition: all 0.2s ease;
}
.page-jump a:hover { border-color: var(--accent); color: #fff; background: rgba(200, 149, 62, 0.18); }
.page-hero-tags { display: flex; gap: 12px; margin-top: 36px; flex-wrap: wrap; }
.page-hero-tags span {
  font-size: 12px; padding: 6px 14px;
  border: 1px solid rgba(234, 234, 226, 0.25);
  border-radius: var(--radius-pill);
  color: rgba(234, 234, 226, 0.8);
}

/* ============ 规则总览 ============ */
.overview-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 24px; }
.overview-item {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.overview-item:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(11, 93, 79, 0.07);
}
.overview-item::after {
  content: ''; position: absolute;
  left: 32px; right: 32px; bottom: -1px; height: 2px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left center;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.overview-item:hover::after { transform: scaleX(1); }
.overview-num {
  font-family: var(--font-mono);
  font-size: 34px; font-weight: 700;
  color: var(--accent); opacity: 0.55;
  display: block; margin-bottom: 18px;
  line-height: 1;
}
.overview-item h3 { font-family: var(--font-sans); font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.overview-item p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin: 0; }

/* ============ 参与流程 ============ */
.steps-section { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.steps-grid::before {
  content: ''; position: absolute;
  top: 22px; left: 12.5%; right: 12.5%;
  height: 1px; background: var(--line);
  z-index: 0;
}
.step-item { position: relative; z-index: 1; padding: 0 6px; }
.step-num {
  width: 44px; height: 44px;
  background: #fff;
  border: 1px solid var(--brand);
  border-radius: var(--radius-btn);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 18px; font-weight: 700;
  color: var(--brand);
  margin-bottom: 20px;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}
.step-item:hover .step-num { background: var(--brand); color: #fff; border-color: var(--brand); }
.step-item h3 { font-family: var(--font-sans); font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; margin: 0; }

/* ============ 规则要点 ============ */
.rules-detail-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: start; }
.rules-detail-intro h2 { font-size: 36px; margin-bottom: 16px; }
.rules-detail-intro p { color: var(--text-secondary); font-size: 16px; margin-bottom: 28px; line-height: 1.8; }
.rules-detail-intro .link-arrow { font-size: 14px; font-weight: 600; }
.rule-row { display: flex; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.rule-row:first-child { padding-top: 0; }
.rule-row:last-child { border-bottom: none; padding-bottom: 0; }
.rule-badge {
  flex-shrink: 0;
  min-width: 76px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--badge-bg);
  border-radius: var(--radius-pill);
  font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  color: var(--brand);
}
.rule-row p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin: 0; flex: 1; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; }
.link-arrow::after { content: '→'; transition: transform 0.25s ease; }
.link-arrow:hover::after { transform: translateX(4px); }

/* ============ 活动类型 ============ */
.types-section { background: var(--card); border-bottom: 1px solid var(--line); }
.types-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 24px; }
.type-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--card);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.type-card:hover { border-color: var(--brand); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(11, 93, 79, 0.08); }
.type-img { overflow: hidden; }
.type-img img { width: 100%; object-fit: cover; transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1); }
.type-card:hover .type-img img { transform: scale(1.04); }
.type-card-feature { display: flex; flex-direction: column; }
.type-card-feature .type-img { height: 280px; }
.type-card-feature .type-img img { height: 100%; }
.type-card-feature .type-card-body { flex: 1; padding: 32px; }
.type-card-half { display: grid; grid-template-columns: 44% 1fr; gap: 0; }
.type-card-half .type-img { height: 100%; min-height: 150px; }
.type-card-half .type-img img { height: 100%; min-height: 150px; }
.type-card-half .type-card-body { padding: 24px 22px; display: flex; flex-direction: column; justify-content: center; }
.type-tag {
  display: inline-block;
  font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  background: var(--badge-bg); color: var(--text-secondary);
  padding: 4px 12px; border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.type-card-body h3 { font-family: var(--font-sans); font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.type-card-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; margin: 0; }

/* ============ FAQ ============ */
.faq-layout { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; align-items: start; }
.faq-left h2 { font-size: 36px; margin-bottom: 16px; }
.faq-left p { color: var(--text-secondary); font-size: 15px; margin-bottom: 28px; line-height: 1.7; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question {
  width: 100%;
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 0;
  font-size: 18px; font-weight: 500;
  color: var(--text); text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--brand); }
.faq-icon { position: relative; width: 16px; height: 16px; flex-shrink: 0; transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1); }
.faq-icon::before,
.faq-icon::after { content: ''; position: absolute; background: var(--brand); border-radius: 1px; }
.faq-icon::before { left: 0; right: 0; top: 50%; height: 2px; margin-top: -1px; }
.faq-icon::after { top: 0; bottom: 0; left: 50%; width: 2px; margin-left: -1px; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), padding 0.25s ease; padding: 0; }
.faq-answer p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; padding-right: 24px; }
.faq-item.active .faq-answer { max-height: 400px; padding-bottom: 24px; }

/* ============ CTA 区 ============ */
.cta-section { background: var(--dark); }
.cta-inner { text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { color: var(--dark-text); font-size: 36px; margin-bottom: 14px; }
.cta-inner p { color: rgba(234, 234, 226, 0.72); font-size: 16px; margin-bottom: 36px; line-height: 1.8; }
.cta-actions { margin-bottom: 24px; }
.cta-note {
  display: block;
  font-size: 12px; color: rgba(234, 234, 226, 0.5);
  border-top: 1px solid rgba(234, 234, 226, 0.15);
  padding-top: 20px; margin-top: 24px;
}

/* ============ 页脚 ============ */
.site-footer { background: var(--bg-light); border-top: 1px solid var(--line); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .footer-logo { font-family: var(--font-serif); font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.footer-brand p { font-size: 14px; color: var(--text-muted); max-width: 340px; line-height: 1.75; margin: 0; }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: var(--text); letter-spacing: 0.04em; }
.footer-col a { display: block; font-size: 14px; color: var(--text-secondary); padding: 6px 0; }
.footer-col a:hover { color: var(--brand); }
.footer-col p { font-size: 14px; color: var(--text-secondary); padding: 4px 0; margin: 0; line-height: 1.7; }
.footer-bottom { border-top: 1px solid var(--line); padding: 20px 0; }
.footer-bottom p { font-size: 12px; color: var(--text-muted); margin: 0; text-align: center; }

/* ============ 滚动显现动画 ============ */
.reveal-ready { opacity: 0; transform: translateY(12px); transition: opacity 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1); }
.reveal-ready.revealed { opacity: 1; transform: none; }

/* ============ 响应式：平板 ≤1023px ============ */
@media (max-width: 1023px) {
  .section { --space-section: 72px; }
  .overview-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }
  .steps-grid::before { display: none; }
  .rules-detail-grid { grid-template-columns: 1fr; gap: 40px; }
  .faq-layout { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
  .page-hero { padding: 80px 0; }
  .page-hero h1 { font-size: 40px; }
}

/* ============ 响应式：手机 ≤767px ============ */
@media (max-width: 767px) {
  body { font-size: 15px; }
  .container { padding: 0 16px; }
  .section { --space-section: 56px; }

  /* 移动端导航抽屉 */
  .main-nav {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 80%; max-width: 340px;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 88px 24px 24px;
    transform: translateX(105%);
    transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: -8px 0 30px rgba(0, 0, 0, 0.12);
    z-index: 200;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav .nav-link {
    display: block;
    padding: 20px 4px;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
  }
  .main-nav .nav-link:hover { color: var(--brand); background: var(--bg-light); }
  .main-nav .nav-link.active { color: var(--brand); }
  .main-nav .nav-link.active::after { display: none; }
  .nav-close {
    display: flex;
    position: absolute; top: 16px; right: 16px;
    width: 40px; height: 40px;
    align-items: center; justify-content: center;
    background: var(--badge-bg);
    color: var(--text);
    font-size: 16px;
    border-radius: 50%;
    transition: background 0.2s ease;
  }
  .nav-close:hover { background: var(--line); }
  .nav-toggle { display: flex; }
  .header-login { padding: 0 12px; font-size: 12px; height: 34px; }

  /* 首屏 */
  .page-hero { padding: 64px 0; text-align: left; }
  .page-hero h1 { font-size: 32px; line-height: 1.3; }
  .page-hero-desc { font-size: 15px; }
  .page-jump { margin-top: 28px; gap: 8px; }
  .page-jump a { font-size: 12px; padding: 5px 12px; }
  .page-hero-tags { margin-top: 28px; gap: 8px; }
  .page-hero-tags span { font-size: 11px; padding: 5px 12px; }

  /* 区块标题 */
  .section-head { margin-bottom: 36px; }
  .section-head h2 { font-size: 28px; }
  .section-head p { font-size: 15px; }

  /* 总览 */
  .overview-item { padding: 28px 24px; }
  .overview-num { font-size: 28px; }

  /* 流程 */
  .steps-grid { grid-template-columns: 1fr; gap: 32px; }
  .step-item { padding: 0; }
  .step-num { width: 40px; height: 40px; font-size: 16px; margin-bottom: 14px; }

  /* 规则要点 */
  .rules-detail-intro h2 { font-size: 28px; }
  .rule-row { flex-direction: column; gap: 10px; padding: 20px 0; }
  .rule-badge { align-self: flex-start; }

  /* 活动类型 */
  .types-grid { grid-template-columns: 1fr; }
  .type-card-feature .type-img { height: 200px; }
  .type-card-half { grid-template-columns: 1fr; }
  .type-card-half .type-img { height: 180px; min-height: 0; }
  .type-card-half .type-img img { height: 100%; min-height: 0; }

  /* FAQ */
  .faq-left h2 { font-size: 28px; }
  .faq-question { font-size: 16px; padding: 20px 0; }
  .faq-answer p { font-size: 14px; }
  .faq-item.active .faq-answer { padding-bottom: 20px; }

  /* CTA */
  .cta-inner h2 { font-size: 28px; }
  .cta-inner p { font-size: 15px; }
  .btn-lg { height: 52px; padding: 0 32px; font-size: 15px; }

  /* 页脚 */
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand { grid-column: auto; }
  .site-footer { padding-top: 48px; }
  .footer-bottom p { font-size: 11px; }
}