/* roulang page: index */
:root {
  --paper: #F7F4EF;
  --warm: #EFEBE3;
  --ink: #1F1E1C;
  --soft: #6F6A63;
  --gold: #B08D57;
  --line: rgba(31, 30, 28, 0.12);
  --dark: #1F1E1C;
  --radius: 4px;
  --shadow: 0 12px 40px rgba(31, 30, 28, 0.08);
  --transition: all 0.25s ease;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
  background: none;
  border: none;
}
::selection {
  background: var(--gold);
  color: var(--paper);
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 244, 239, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.logo-main {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}
.logo-num {
  color: var(--gold);
}
.logo-sub {
  font-size: 12px;
  color: var(--soft);
  letter-spacing: 0.08em;
  font-weight: 500;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  padding: 10px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}
.nav-link:hover {
  color: var(--gold);
}
.nav-link.active {
  color: var(--ink);
}
.nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--gold);
  color: var(--ink);
}
.btn-gold {
  background: var(--gold);
  color: var(--ink);
}
.btn-gold:hover {
  background: var(--ink);
  color: var(--paper);
}
.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: 1px solid var(--ink);
}
.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-outline-light {
  background: transparent;
  color: var(--paper);
  border: 1px solid rgba(247, 244, 239, 0.6);
}
.btn-outline-light:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 700px;
  height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(31, 30, 28, 0.82) 0%, rgba(31, 30, 28, 0.45) 55%, rgba(31, 30, 28, 0.15) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 48px;
  padding-bottom: 48px;
}
.hero-event {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(247, 244, 239, 0.85);
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  border: 1px solid rgba(247, 244, 239, 0.25);
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(31, 30, 28, 0.25);
}
.event-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--gold);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero-title {
  font-size: 82px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero-title .text-gold {
  color: var(--gold);
}
.hero-sub {
  font-size: 19px;
  color: rgba(247, 244, 239, 0.85);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 64px;
  color: rgba(247, 244, 239, 0.7);
  font-size: 13px;
  letter-spacing: 0.05em;
  flex-wrap: wrap;
}
.hero-meta i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  display: inline-block;
}
.hero-event,
.hero-title,
.hero-sub,
.hero-actions,
.hero-meta {
  animation: fadeUp 0.8s ease both;
}
.hero-title { animation-delay: 0.08s; }
.hero-sub { animation-delay: 0.16s; }
.hero-actions { animation-delay: 0.24s; }
.hero-meta { animation-delay: 0.32s; }
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
.section {
  padding: 96px 0;
}
.section-head {
  margin-bottom: 56px;
}
.section-head.split {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}
.section-tag {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.gold-line {
  width: 48px;
  height: 1px;
  background: var(--gold);
  margin-top: 20px;
}
.view-all {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
}
.view-all:hover {
  color: var(--gold);
  gap: 10px;
  border-bottom-color: var(--gold);
}

/* Insight */
.insight-section {
  background: var(--ink);
  color: var(--paper);
}
.insight-grid {
  display: flex;
  gap: 80px;
  align-items: flex-start;
}
.insight-num {
  font-size: 72px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', Georgia, serif;
  flex-shrink: 0;
}
.insight-text p {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.65;
  max-width: 760px;
  font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', Georgia, serif;
}

/* Solution */
.solution-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 72px;
  align-items: center;
}
.solution-image {
  overflow: hidden;
  border-radius: 4px;
}
.solution-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.solution-image:hover img {
  transform: scale(1.02);
}
.feature-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.feature-item:first-of-type {
  border-top: 1px solid var(--line);
}
.feature-item h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 6px;
}
.feature-item h3::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1px;
  background: var(--gold);
  margin-right: 10px;
  vertical-align: middle;
}
.feature-item p {
  font-size: 15px;
  color: var(--soft);
}

/* Data */
.data-section {
  background: var(--warm);
}
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.data-item {
  padding-left: 24px;
  border-left: 1px solid var(--line);
  transition: var(--transition);
}
.data-label {
  font-size: 12px;
  color: var(--soft);
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 12px;
}
.data-num {
  font-size: 64px;
  font-weight: 600;
  color: var(--gold);
  line-height: 1.1;
  transition: var(--transition);
  display: inline-block;
  position: relative;
}
.data-num::after {
  content: '';
  display: block;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.data-item:hover {
  transform: translateY(2px);
}
.data-item:hover .data-num {
  transform: translateY(-2px);
}
.data-item:hover .data-num::after {
  transform: scaleX(1);
}
.data-unit {
  font-size: 28px;
  font-weight: 600;
  margin-left: 4px;
}

/* News */
.news-section {
  background: var(--paper);
}
.news-list {
  display: flex;
  flex-direction: column;
}
.news-card {
  display: flex;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  transition: var(--transition);
  position: relative;
}
.news-card::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gold);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}
.news-card:hover {
  transform: translateY(-4px);
}
.news-card:hover::before {
  transform: scaleY(1);
}
.news-cover {
  width: 200px;
  flex-shrink: 0;
  border-radius: 4px;
  overflow: hidden;
  height: 128px;
}
.news-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .news-cover img {
  transform: scale(1.02);
}
.news-info {
  flex: 1;
  min-width: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}
.news-cat {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
  font-weight: 600;
  position: relative;
  padding-left: 20px;
}
.news-cat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 16px;
  height: 1px;
  background: var(--gold);
}
.news-date {
  font-size: 12px;
  color: var(--soft);
}
.news-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  transition: var(--transition);
  line-height: 1.5;
}
.news-card:hover .news-title {
  color: var(--gold);
}
.news-excerpt {
  font-size: 14px;
  color: var(--soft);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-more .arrow {
  transition: transform 0.25s ease;
  display: inline-block;
}
.news-card:hover .news-more .arrow {
  transform: translateX(4px);
}
.news-empty {
  padding: 64px 0;
  text-align: center;
  color: var(--soft);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

/* Voice */
.voice-section {
  background: var(--warm);
}
.voice-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 40px;
  align-items: stretch;
}
.voice-main {
  background: var(--paper);
  padding: 48px;
  border-radius: 4px;
  border-left: 2px solid var(--gold);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.quote-mark {
  font-size: 72px;
  font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', Georgia, serif;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 16px;
}
.voice-main p {
  font-size: 22px;
  line-height: 1.7;
  font-weight: 500;
}
.voice-author {
  margin-top: 24px;
  font-size: 14px;
  color: var(--soft);
  letter-spacing: 0.04em;
}
.voice-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.voice-item {
  flex: 1;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: var(--transition);
}
.voice-item:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow);
}
.voice-item p {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.7;
}
.voice-item .voice-author {
  margin-top: 16px;
  font-size: 13px;
}

/* FAQ */
.faq-section {
  background: var(--paper);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:first-of-type {
  border-top: 1px solid var(--line);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 4px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover {
  color: var(--gold);
}
.faq-icon {
  font-size: 26px;
  font-weight: 300;
  color: var(--gold);
  transition: transform 0.3s ease;
  line-height: 1;
  margin-left: 16px;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer p {
  padding: 0 4px 22px;
  font-size: 15px;
  color: var(--soft);
  line-height: 1.8;
  max-width: 680px;
}

/* CTA */
.cta-section {
  padding: 32px 0 96px;
  background: var(--paper);
}
.cta-box {
  background: var(--ink);
  border-radius: 4px;
  padding: 72px 64px;
  text-align: center;
  color: var(--paper);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.cta-box h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.cta-box > p {
  font-size: 16px;
  color: rgba(247, 244, 239, 0.75);
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.cta-tools {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(247, 244, 239, 0.65);
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: var(--paper);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 64px;
  padding: 72px 0 48px;
}
.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-num {
  color: var(--gold);
}
.footer-brand p {
  font-size: 14px;
  color: rgba(247, 244, 239, 0.6);
  max-width: 300px;
}
.footer-nav h3,
.footer-info h3 {
  font-size: 14px;
  letter-spacing: 0.08em;
  color: rgba(247, 244, 239, 0.5);
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-nav a {
  display: block;
  font-size: 14px;
  color: rgba(247, 244, 239, 0.8);
  margin-bottom: 12px;
  transition: var(--transition);
}
.footer-nav a:hover {
  color: var(--gold);
}
.footer-info p {
  font-size: 14px;
  color: rgba(247, 244, 239, 0.8);
  margin-bottom: 12px;
}
.footer-bottom {
  border-top: 1px solid rgba(247, 244, 239, 0.1);
  padding: 24px 0;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(247, 244, 239, 0.5);
  text-align: center;
}

/* Responsive */
@media (max-width: 1024px) {
  .container {
    padding: 0 24px;
  }
  .hero-title {
    font-size: 60px;
  }
  .section-title {
    font-size: 34px;
  }
  .solution-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .voice-grid {
    grid-template-columns: 1fr;
  }
  .insight-grid {
    gap: 40px;
  }
  .data-grid {
    gap: 24px;
  }
  .data-num {
    font-size: 52px;
  }
}
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  .section {
    padding: 64px 0;
  }
  .header-inner {
    height: 64px;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--paper);
    flex-direction: column;
    align-items: flex-start;
    padding: 8px 16px 24px;
    gap: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 40px rgba(31, 30, 28, 0.06);
  }
  .site-nav.open {
    display: flex;
  }
  .nav-link {
    width: 100%;
    padding: 14px 0;
    font-size: 17px;
    border-bottom: 1px solid var(--line);
  }
  .site-nav .btn {
    margin-top: 16px;
    width: 100%;
  }
  .nav-toggle {
    display: flex;
  }
  .hero {
    min-height: 640px;
    height: auto;
  }
  .hero-title {
    font-size: 42px;
  }
  .hero-sub {
    font-size: 17px;
  }
  .hero-meta {
    margin-top: 40px;
  }
  .hero-event {
    font-size: 12px;
  }
  .data-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .news-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .news-cover {
    width: 100%;
    height: 180px;
  }
  .news-card::before {
    left: -16px;
  }
  .cta-box {
    padding: 48px 24px;
  }
  .cta-box h2 {
    font-size: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 48px 0 32px;
  }
  .insight-text p {
    font-size: 24px;
  }
  .insight-num {
    font-size: 52px;
  }
  .voice-main {
    padding: 32px;
  }
  .voice-main p {
    font-size: 19px;
  }
  .section-head.split {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .hero-title {
    font-size: 36px;
  }
  .data-num {
    font-size: 44px;
  }
  .data-unit {
    font-size: 22px;
  }
  .section-title {
    font-size: 28px;
  }
  .cta-tools {
    gap: 12px 24px;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg: #F7F4EF;
            --bg-soft: #EFEBE3;
            --ink: #1F1E1C;
            --ink-soft: #6F6A63;
            --gold: #B08D57;
            --dark: #1F1E1C;
            --light: #F7F4EF;
            --line: rgba(31, 30, 28, 0.12);
            --radius: 4px;
            --shadow: 0 12px 40px rgba(31, 30, 28, 0.08);
            --space-lg: 110px;
            --space-md: 72px;
            --space-sm: 48px;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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);
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--ink);
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover,
        a:focus {
            color: var(--gold);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.25s ease;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: 15px;
            color: var(--ink);
            border: none;
            outline: none;
            background: transparent;
        }
        input:focus,
        textarea:focus {
            outline: none;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            font-weight: 700;
        }
        ::selection {
            background: rgba(176, 141, 87, 0.3);
        }
        :focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all 0.25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--dark);
            color: var(--light);
        }
        .btn-primary:hover {
            background: var(--gold);
            color: var(--dark);
            border-color: var(--gold);
        }
        .btn-outline {
            background: transparent;
            color: var(--ink);
            border: 1px solid var(--ink);
        }
        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
        }
        .btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(247, 244, 239, 0.92);
            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;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }
        .logo-main {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ink);
            line-height: 1;
        }
        .logo-num {
            color: var(--gold);
        }
        .logo-sub {
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--ink-soft);
            font-weight: 500;
            text-transform: uppercase;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--ink);
            position: relative;
            padding: 6px 0;
            transition: color 0.25s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gold);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.3s ease;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--gold);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: var(--radius);
            background: transparent;
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all 0.25s ease;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 页头 Hero ===== */
        .page-hero {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-color: var(--dark);
            border-bottom: 1px solid var(--line);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(31, 30, 28, 0.82) 0%, rgba(31, 30, 28, 0.55) 55%, rgba(31, 30, 28, 0.25) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 60px;
        }
        .hero-tag {
            font-size: 12px;
            letter-spacing: 0.12em;
            color: var(--gold);
            text-transform: uppercase;
            margin-bottom: 16px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-tag::before {
            content: '';
            width: 24px;
            height: 1px;
            background: var(--gold);
            display: inline-block;
        }
        .page-hero h1 {
            font-size: 68px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--light);
            line-height: 1.15;
            margin-bottom: 20px;
            max-width: 800px;
        }
        .page-hero h1 .gold {
            color: var(--gold);
        }
        .hero-desc {
            font-size: 18px;
            color: rgba(247, 244, 239, 0.85);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 0;
            font-weight: 400;
        }
        .hero-meta {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(247, 244, 239, 0.2);
            display: flex;
            gap: 40px;
            font-size: 13px;
            color: rgba(247, 244, 239, 0.6);
            letter-spacing: 0.04em;
        }

        /* ===== 通用板块 ===== */
        .split-section,
        .path-section,
        .links-section,
        .faq-section {
            padding: var(--space-lg) 0;
        }
        .section-tag {
            font-size: 12px;
            letter-spacing: 0.1em;
            color: var(--gold);
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 12px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .section-tag::before {
            content: '';
            width: 20px;
            height: 1px;
            background: var(--gold);
        }
        h2 {
            font-size: 40px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--ink);
            margin-bottom: 24px;
            line-height: 1.2;
        }
        .section-sub {
            font-size: 16px;
            color: var(--ink-soft);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 48px;
        }

        /* ===== 两栏图文 ===== */
        .split-section {
            background: var(--bg);
        }
        .split-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 80px;
            align-items: center;
        }
        .split-text h2 {
            margin-bottom: 16px;
        }
        .split-text > p:not(.section-tag) {
            font-size: 16px;
            color: var(--ink-soft);
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .feature-list {
            border-top: 1px solid var(--line);
        }
        .feature-item {
            padding: 22px 0;
            border-bottom: 1px solid var(--line);
            transition: padding-left 0.25s ease;
        }
        .feature-item:hover {
            padding-left: 8px;
        }
        .feature-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--ink);
        }
        .feature-item p {
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.6;
            margin: 0;
        }
        .split-image {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius);
            box-shadow: 0 4px 20px rgba(31, 30, 28, 0.06);
        }
        .split-image img {
            width: 100%;
            height: 100%;
            min-height: 400px;
            object-fit: cover;
            border-radius: var(--radius);
            transition: transform 0.5s ease;
        }
        .split-image:hover img {
            transform: scale(1.02);
        }
        .split-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(31, 30, 28, 0.08);
            border-radius: var(--radius);
            pointer-events: none;
        }

        /* ===== 服务路径 ===== */
        .path-section {
            background: var(--bg-soft);
        }
        .path-list {
            margin-top: 40px;
            max-width: 860px;
        }
        .path-item {
            display: grid;
            grid-template-columns: 96px 1fr;
            gap: 24px;
            padding: 32px 0;
            border-bottom: 1px solid var(--line);
            transition: background 0.25s ease;
        }
        .path-item:first-child {
            border-top: 1px solid var(--line);
        }
        .path-item:hover {
            background: rgba(176, 141, 87, 0.04);
        }
        .path-num {
            font-family: var(--font-serif);
            font-size: 44px;
            font-weight: 600;
            color: var(--gold);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .path-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--ink);
        }
        .path-body p {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 关联链接 ===== */
        .links-section {
            background: var(--bg);
        }
        .link-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: 40px;
        }
        .link-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 28px;
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            transition: all 0.25s ease;
        }
        .link-item:hover {
            border-color: var(--gold);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .link-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--gold);
            flex-shrink: 0;
            transition: background 0.25s ease;
        }
        .link-item:hover .link-icon {
            background: rgba(176, 141, 87, 0.15);
        }
        .link-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--ink);
        }
        .link-item p {
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-soft);
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-wrap h2 {
            text-align: center;
        }
        .faq-wrap .section-tag {
            justify-content: center;
            width: 100%;
        }
        .faq-wrap .section-tag::before {
            display: none;
        }
        .faq-list {
            margin-top: 40px;
        }
        .faq-item {
            border-bottom: 1px solid var(--line);
            transition: all 0.25s ease;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--line);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            padding: 24px 0;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            gap: 16px;
            cursor: pointer;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--gold);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 400;
            color: var(--gold);
            transition: all 0.3s ease;
            line-height: 1;
        }
        .faq-item.open .faq-icon {
            background: var(--gold);
            color: var(--light);
            transform: rotate(45deg);
            border-color: var(--gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 0 24px;
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space-lg) 0;
            background: var(--dark);
            color: var(--light);
        }
        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: var(--light);
            font-size: 38px;
            margin-bottom: 12px;
        }
        .cta-inner > p {
            color: rgba(247, 244, 239, 0.7);
            font-size: 16px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .cta-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            text-align: left;
        }
        .form-field {
            position: relative;
        }
        .form-field input,
        .form-field textarea {
            width: 100%;
            padding: 12px 0;
            border-bottom: 1px solid rgba(247, 244, 239, 0.3);
            color: var(--light);
            font-size: 15px;
            border-radius: 0;
            transition: border-color 0.25s ease;
        }
        .form-field textarea {
            resize: vertical;
            min-height: 28px;
        }
        .form-field input::placeholder,
        .form-field textarea::placeholder {
            color: rgba(247, 244, 239, 0.45);
        }
        .form-field input:focus,
        .form-field textarea:focus {
            border-bottom-color: var(--gold);
        }
        .form-field.full {
            grid-column: 1 / -1;
        }
        .form-actions {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .form-actions .btn-primary {
            background: var(--gold);
            color: var(--dark);
            border-color: var(--gold);
        }
        .form-actions .btn-primary:hover {
            background: var(--light);
            color: var(--dark);
            border-color: var(--light);
        }
        .form-notice {
            font-size: 14px;
            border-radius: var(--radius);
            padding: 12px 16px;
            margin-top: 20px;
            grid-column: 1 / -1;
        }
        .form-notice.success {
            background: var(--bg);
            color: var(--gold);
            border: 1px solid rgba(176, 141, 87, 0.3);
        }
        .form-notice.error {
            background: var(--dark);
            color: var(--light);
            border: 1px solid rgba(247, 244, 239, 0.2);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(247, 244, 239, 0.7);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin-bottom: 16px;
        }
        .footer-brand .logo-main {
            color: var(--light);
        }
        .footer-brand .logo-num {
            color: var(--gold);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(247, 244, 239, 0.6);
            max-width: 320px;
        }
        .footer-nav h3,
        .footer-info h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--light);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-nav a {
            display: block;
            font-size: 14px;
            color: rgba(247, 244, 239, 0.6);
            padding: 6px 0;
            transition: color 0.25s ease;
        }
        .footer-nav a:hover {
            color: var(--gold);
        }
        .footer-info p {
            font-size: 14px;
            color: rgba(247, 244, 239, 0.6);
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .footer-bottom {
            border-top: 1px solid rgba(247, 244, 239, 0.12);
            padding: 20px 0;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(247, 244, 239, 0.4);
            text-align: center;
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --space-lg: 88px;
                --space-md: 56px;
            }
            .page-hero h1 {
                font-size: 52px;
            }
            h2 {
                font-size: 34px;
            }
            .split-grid {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .split-image img {
                min-height: 320px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .site-header {
                height: auto;
            }
            .header-inner {
                height: 64px;
            }
            .site-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg);
                flex-direction: column;
                align-items: stretch;
                padding: 24px 16px 32px;
                gap: 0;
                border-bottom: 1px solid var(--line);
                box-shadow: 0 20px 40px rgba(31, 30, 28, 0.08);
                transform: translateY(-16px);
                opacity: 0;
                pointer-events: none;
                transition: all 0.3s ease;
                z-index: 99;
            }
            .site-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .site-nav .nav-link {
                display: block;
                padding: 14px 0;
                font-size: 18px;
                border-bottom: 1px solid var(--line);
            }
            .site-nav .nav-link:last-of-type {
                border-bottom: none;
            }
            .site-nav .nav-link::after {
                display: none;
            }
            .site-nav .btn {
                margin-top: 20px;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                min-height: 380px;
            }
            .page-hero h1 {
                font-size: 38px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-meta {
                flex-wrap: wrap;
                gap: 16px;
            }
            .split-section,
            .path-section,
            .links-section,
            .faq-section {
                padding: 64px 0;
            }
            .path-item {
                grid-template-columns: 60px 1fr;
                gap: 16px;
                padding: 24px 0;
            }
            .path-num {
                font-size: 32px;
            }
            .link-list {
                grid-template-columns: 1fr;
            }
            .faq-question {
                font-size: 16px;
                padding: 20px 0;
            }
            .cta-section {
                padding: 64px 0;
            }
            .cta-inner h2 {
                font-size: 30px;
            }
            .cta-form {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .form-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .form-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            h2 {
                font-size: 28px;
            }
            .split-text > p:not(.section-tag) {
                font-size: 15px;
            }
            .path-body h3 {
                font-size: 17px;
            }
            .path-body p {
                font-size: 14px;
            }
            .link-item {
                padding: 20px;
            }
            .faq-answer-inner {
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-paper: #F7F4EF;
            --bg-warm: #EFEBE3;
            --text-ink: #1F1E1C;
            --text-sub: #6F6A63;
            --gold: #B08D57;
            --dark: #1F1E1C;
            --line: rgba(31, 30, 28, 0.12);
            --radius: 4px;
            --shadow-hover: 0 12px 40px rgba(31, 30, 28, 0.08);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            background-color: var(--bg-paper);
            color: var(--text-ink);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover,
        a:focus-visible {
            color: var(--gold);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        input,
        textarea {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(247, 244, 239, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

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

        .logo-main {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-ink);
            line-height: 1;
        }

        .logo-num {
            color: var(--gold);
        }

        .logo-sub {
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--text-sub);
            text-transform: uppercase;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .site-nav .nav-link {
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--text-ink);
            position: relative;
            padding: 6px 0;
        }

        .site-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 4px;
            background: var(--gold);
            transition: width 0.3s ease;
        }

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

        .site-nav .nav-link.active::after {
            width: 100%;
        }

        .site-nav .btn {
            margin-left: 8px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--dark);
            color: var(--bg-paper);
        }

        .btn-primary:hover {
            background: var(--gold);
            color: var(--dark);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-ink);
            border: 1px solid var(--text-ink);
        }

        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
        }

        .btn-sm {
            height: 40px;
            padding: 0 20px;
        }

        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 15px;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-ink);
            transition: var(--transition);
        }

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

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

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

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 88px 0 72px;
            background: linear-gradient(120deg, #EFEBE3 0%, #F7F4EF 60%, #F7F4EF 100%);
            border-bottom: 1px solid var(--line);
        }

        .page-hero .page-tag {
            font-size: 13px;
            letter-spacing: 0.12em;
            color: var(--gold);
            font-weight: 600;
            margin-bottom: 16px;
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }

        .page-hero .page-tag::before {
            content: "";
            width: 32px;
            height: 1px;
            background: var(--gold);
        }

        .page-hero h1 {
            font-size: 56px;
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-ink);
            margin-bottom: 20px;
        }

        .page-hero .hero-line {
            width: 56px;
            height: 2px;
            background: var(--gold);
            margin-bottom: 24px;
        }

        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 700px;
        }

        /* ===== Timeline Section ===== */
        .timeline-section {
            padding: 96px 0 80px;
        }

        .section-head {
            margin-bottom: 64px;
        }

        .section-head .section-tag {
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--gold);
            text-transform: uppercase;
            font-weight: 600;
            display: block;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-ink);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .timeline {
            position: relative;
            padding: 0;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 1px;
            background: rgba(176, 141, 87, 0.35);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            display: flex;
            align-items: flex-start;
            margin-bottom: 72px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-node {
            position: absolute;
            left: 50%;
            top: 12px;
            transform: translateX(-50%);
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--bg-paper);
            border: 2px solid var(--gold);
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-content {
            width: 42%;
            margin-right: auto;
            padding-right: 48px;
            text-align: right;
        }

        .timeline-item:nth-child(even) .timeline-content {
            width: 42%;
            margin-left: auto;
            padding-left: 48px;
            text-align: left;
        }

        .timeline-year {
            font-size: 64px;
            font-weight: 700;
            line-height: 1.1;
            color: var(--gold);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            font-family: "PingFang SC", "Noto Sans SC", sans-serif;
        }

        .timeline-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-ink);
            margin-bottom: 8px;
        }

        .timeline-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .timeline-item:nth-child(odd) .timeline-year {
            font-size: 56px;
        }

        /* ===== Value Section ===== */
        .value-section {
            background: var(--dark);
            padding: 96px 0;
            color: var(--bg-paper);
        }

        .value-section .section-tag {
            color: var(--gold);
        }

        .value-section h2 {
            color: var(--bg-paper);
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1px;
            background: rgba(247, 244, 239, 0.15);
            border: 1px solid rgba(247, 244, 239, 0.15);
            margin-top: 48px;
        }

        .value-card {
            background: var(--dark);
            padding: 40px 32px;
            transition: var(--transition);
            position: relative;
        }

        .value-card:hover {
            background: rgba(176, 141, 87, 0.08);
        }

        .value-card .value-num {
            font-size: 14px;
            letter-spacing: 0.1em;
            color: var(--gold);
            font-weight: 600;
            display: block;
            margin-bottom: 16px;
        }

        .value-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--bg-paper);
        }

        .value-card p {
            font-size: 14px;
            color: rgba(247, 244, 239, 0.7);
            line-height: 1.8;
        }

        /* ===== Honor / Milestone Strip ===== */
        .honor-section {
            padding: 96px 0;
        }

        .honor-intro {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 80px;
            align-items: center;
        }

        .honor-intro h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .honor-intro .honor-desc {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 2;
        }

        .honor-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            margin-top: 64px;
            border-top: 1px solid var(--line);
            padding-top: 48px;
        }

        .stat-item {
            text-align: center;
            padding: 20px 0;
            transition: var(--transition);
            border-bottom: 2px solid transparent;
        }

        .stat-item:hover {
            transform: translateY(-2px);
            border-bottom-color: var(--gold);
        }

        .stat-label {
            font-size: 12px;
            letter-spacing: 0.1em;
            color: var(--text-sub);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .stat-value {
            font-size: 72px;
            font-weight: 600;
            color: var(--gold);
            line-height: 1.1;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--dark);
            padding: 100px 0;
            color: var(--bg-paper);
            text-align: center;
            margin-bottom: 0;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--bg-paper);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(247, 244, 239, 0.7);
            margin-bottom: 40px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-gold {
            background: var(--gold);
            color: var(--dark);
        }

        .btn-gold:hover {
            background: var(--bg-paper);
            color: var(--dark);
        }

        .btn-dark-outline {
            background: transparent;
            border: 1px solid rgba(247, 244, 239, 0.6);
            color: var(--bg-paper);
        }

        .btn-dark-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: var(--bg-paper);
            padding: 72px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 60px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            color: rgba(247, 244, 239, 0.6);
            max-width: 280px;
        }

        .footer-logo {
            display: flex;
            align-items: baseline;
            gap: 10px;
        }

        .footer-logo .logo-main {
            color: var(--bg-paper);
        }

        .footer-logo .logo-num {
            color: var(--gold);
        }

        .footer-nav h3,
        .footer-info h3 {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--bg-paper);
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .footer-nav a {
            display: block;
            font-size: 14px;
            color: rgba(247, 244, 239, 0.65);
            margin-bottom: 12px;
        }

        .footer-nav a:hover {
            color: var(--gold);
        }

        .footer-info p {
            font-size: 14px;
            color: rgba(247, 244, 239, 0.65);
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(247, 244, 239, 0.15);
            padding: 24px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(247, 244, 239, 0.5);
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .site-nav {
                gap: 20px;
            }

            .page-hero h1 {
                font-size: 44px;
            }

            .timeline-item:nth-child(odd) .timeline-content,
            .timeline-item:nth-child(even) .timeline-content {
                width: 48%;
            }

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

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

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

            .nav-toggle {
                display: flex;
            }

            .site-nav {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: var(--bg-paper);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 16px 32px;
                gap: 8px;
                border-bottom: 1px solid var(--line);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 49;
                box-shadow: 0 24px 40px rgba(31, 30, 28, 0.08);
            }

            .site-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .site-nav .nav-link {
                font-size: 18px;
                padding: 12px 0;
                width: 100%;
                border-bottom: 1px solid var(--line);
            }

            .site-nav .nav-link::after {
                bottom: -1px;
            }

            .site-nav .btn {
                margin-top: 16px;
                width: 100%;
                justify-content: center;
            }

            .page-hero {
                padding: 64px 0 48px;
            }

            .page-hero h1 {
                font-size: 38px;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .timeline-section {
                padding: 64px 0 48px;
            }

            .section-head h2 {
                font-size: 30px;
            }

            .timeline::before {
                left: 8px;
                transform: none;
            }

            .timeline-node {
                left: 8px;
                transform: translateX(-50%);
            }

            .timeline-item {
                flex-direction: column;
                padding-left: 36px;
            }

            .timeline-item:nth-child(odd) .timeline-content,
            .timeline-item:nth-child(even) .timeline-content {
                width: 100%;
                padding-right: 0;
                padding-left: 0;
                text-align: left;
                margin: 0;
            }

            .timeline-year {
                font-size: 40px;
            }

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

            .honor-section {
                padding: 64px 0;
            }

            .honor-stats {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                margin-top: 40px;
            }

            .stat-value {
                font-size: 48px;
            }

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

            .cta-section {
                padding: 72px 0;
            }

            .cta-section h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .logo-main {
                font-size: 24px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

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

            .timeline-year {
                font-size: 36px;
            }

            .honor-stats {
                grid-template-columns: 1fr;
            }

            .stat-value {
                font-size: 56px;
            }

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

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

/* roulang page: article */
:root {
  --c-base: #F7F4EF;
  --c-warm: #EFEBE3;
  --c-ink: #1F1E1C;
  --c-muted: #6F6A63;
  --c-gold: #B08D57;
  --c-dark: #1F1E1C;
  --line: rgba(31, 30, 28, 0.12);
  --line-light: rgba(247, 244, 239, 0.14);
  --radius: 4px;
  --shadow-hover: 0 12px 40px rgba(31, 30, 28, 0.08);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
}
* { 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;
  background: var(--c-base);
  color: var(--c-ink);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all .25s ease; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }
input, textarea { font-family: inherit; }
:focus-visible { outline: 2px solid var(--c-gold); outline-offset: 3px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  transition: all .25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }
.btn-primary { background: var(--c-ink); color: var(--c-base); }
.btn-primary:hover { background: var(--c-gold); color: var(--c-ink); border-color: var(--c-gold); }
.btn-gold { background: var(--c-gold); color: var(--c-ink); }
.btn-gold:hover { background: var(--c-ink); color: var(--c-base); border-color: var(--c-ink); }
.btn-outline { background: transparent; border-color: var(--c-ink); color: var(--c-ink); }
.btn-outline:hover { border-color: var(--c-gold); color: var(--c-gold); }
.btn-outline-light { background: transparent; border-color: rgba(247, 244, 239, .5); color: var(--c-base); }
.btn-outline-light:hover { border-color: var(--c-gold); color: var(--c-gold); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.92);
  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: 76px; }
.logo { display: flex; align-items: baseline; gap: 10px; }
.logo-main { font-family: var(--font-serif); font-size: 26px; font-weight: 800; letter-spacing: -.02em; line-height: 1.2; }
.logo-num { color: var(--c-gold); }
.logo-sub { font-size: 12px; letter-spacing: .08em; color: var(--c-muted); text-transform: uppercase; }
.site-nav { display: flex; align-items: center; gap: 32px; }
.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--c-ink);
  padding: 8px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--c-gold);
  transition: width .25s ease;
}
.nav-link:hover { color: var(--c-gold); }
.nav-link:hover::after { width: 100%; }
.nav-link.active::after { width: 100%; }
.nav-toggle { display: none; width: 44px; height: 44px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--c-ink); transition: all .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.article-hero {
  padding: 84px 0;
  background:
    linear-gradient(100deg, rgba(31, 30, 28, 0.9) 0%, rgba(31, 30, 28, 0.65) 55%, rgba(31, 30, 28, 0.35) 100%),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  color: var(--c-base);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: rgba(247, 244, 239, 0.72);
  letter-spacing: .02em;
  margin-bottom: 28px;
}
.breadcrumb a:hover { color: var(--c-gold); }
.breadcrumb .sep { color: rgba(247, 244, 239, 0.45); }
.breadcrumb .current {
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: rgba(247, 244, 239, 0.85);
}
.article-title {
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.25;
  font-weight: 800;
  max-width: 760px;
  letter-spacing: -.02em;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(31, 30, 28, 0.25);
}
.article-meta { display: flex; flex-wrap: wrap; gap: 24px; font-size: 13px; color: rgba(247, 244, 239, 0.8); }
.article-meta .meta-item { display: inline-flex; align-items: center; gap: 8px; }
.article-meta .meta-item::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--c-gold); }

.article-section { padding: 80px 0 96px; }
.article-body { font-size: 16px; line-height: 1.9; color: #2b2722; }
.article-body p { margin-bottom: 1.2em; }
.article-body h2 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  margin: 1.6em 0 .6em;
  padding-left: 14px;
  border-left: 4px solid var(--c-gold);
  line-height: 1.4;
}
.article-body h3 { font-size: 20px; font-weight: 600; margin: 1.4em 0 .5em; }
.article-body a { color: var(--c-gold); border-bottom: 1px solid rgba(176, 141, 87, 0.4); }
.article-body a:hover { color: var(--c-ink); border-color: var(--c-ink); }
.article-body img { border-radius: var(--radius); margin: 1.4em 0; }
.article-body blockquote {
  margin: 1.6em 0;
  padding: 20px 24px;
  background: var(--c-warm);
  border-left: 4px solid var(--c-gold);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.8;
  color: #3d3832;
}
.article-body ul, .article-body ol { margin: 1em 0 1.2em 1.4em; }
.article-body li { margin-bottom: .4em; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.article-body th { background: var(--c-warm); font-weight: 600; }
.article-body pre {
  background: var(--c-ink);
  color: var(--c-base);
  padding: 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.4em 0;
}
.article-footer-nav {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.article-footer-nav a { font-size: 14px; font-weight: 500; letter-spacing: .02em; color: var(--c-ink); }
.article-footer-nav a:hover { color: var(--c-gold); }
.article-footer-nav .arrow { display: inline-block; transition: transform .25s ease; }
.article-footer-nav a:hover .arrow-back { transform: translateX(-4px); }
.article-footer-nav a:hover .arrow-forward { transform: translateX(4px); }
.article-not-found { padding: 80px 24px; text-align: center; }
.article-not-found p { font-size: 24px; font-weight: 600; color: var(--c-muted); margin-bottom: 20px; }

.tag { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; letter-spacing: .08em; color: var(--c-gold); text-transform: uppercase; }
.tag::before { content: ''; width: 16px; height: 1px; background: var(--c-gold); }

.related-section { background: var(--c-warm); padding: 96px 0; }
.related-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 48px; gap: 16px; flex-wrap: wrap; }
.related-head h2 { font-family: var(--font-serif); font-size: 32px; font-weight: 700; letter-spacing: -.01em; }
.related-head .more { font-size: 14px; color: var(--c-muted); }
.related-head .more:hover { color: var(--c-gold); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.related-card {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(176, 141, 87, 0.45);
}
.related-card a { display: block; height: 100%; }
.related-cover { aspect-ratio: 16 / 10; overflow: hidden; background: var(--c-base); }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.related-card:hover .related-cover img { transform: scale(1.02); }
.related-info { padding: 22px 24px 26px; }
.related-info .tag { margin-bottom: 12px; }
.related-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; transition: color .25s ease; }
.related-card:hover .related-info h3 { color: var(--c-gold); }
.related-info p { font-size: 14px; color: var(--c-muted); margin-bottom: 14px; line-height: 1.7; }
.related-date { font-size: 12px; color: var(--c-muted); letter-spacing: .02em; }

.cta-section { background: var(--c-ink); color: var(--c-base); padding: 96px 0; }
.cta-inner { max-width: 760px; margin: 0 auto; text-align: center; padding: 0 24px; }
.cta-inner h2 { font-family: var(--font-serif); font-size: 36px; font-weight: 700; margin-bottom: 16px; letter-spacing: -.01em; }
.cta-inner p { color: rgba(247, 244, 239, 0.72); margin-bottom: 36px; font-size: 16px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.site-footer { background: var(--c-ink); color: rgba(247, 244, 239, 0.7); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 56px; }
.footer-logo { display: flex; align-items: baseline; gap: 10px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: rgba(247, 244, 239, 0.6); max-width: 280px; line-height: 1.7; }
.footer-nav h3, .footer-info h3 { font-size: 14px; letter-spacing: .08em; color: var(--c-base); margin-bottom: 18px; text-transform: uppercase; }
.footer-nav a { display: block; font-size: 14px; padding: 5px 0; color: rgba(247, 244, 239, 0.6); transition: color .25s ease; }
.footer-nav a:hover { color: var(--c-gold); }
.footer-info p { font-size: 14px; line-height: 1.8; color: rgba(247, 244, 239, 0.6); }
.footer-bottom { border-top: 1px solid var(--line-light); padding: 24px 0; text-align: center; font-size: 13px; color: rgba(247, 244, 239, 0.45); }

@media (max-width: 1024px) {
  .site-nav { gap: 20px; }
  .article-title { font-size: 36px; }
  .related-grid { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .header-inner { height: 64px; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--c-base);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 24px 32px;
    gap: 18px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s ease, opacity .3s ease;
  }
  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link { font-size: 20px; }
  .site-nav .btn { margin-top: 8px; }
  .article-hero { padding: 64px 0; }
  .article-title { font-size: 30px; }
  .article-section { padding: 56px 0 72px; }
  .related-section { padding: 64px 0; }
  .related-grid { grid-template-columns: 1fr; }
  .related-head h2 { font-size: 26px; }
  .cta-section { padding: 72px 0; }
  .cta-inner h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .breadcrumb .current { max-width: 200px; }
}

/* roulang page: category3 */
:root {
  --bg: #F7F4EF;
  --bg-soft: #EFEBE3;
  --ink: #1F1E1C;
  --text-sub: #6F6A63;
  --accent: #B08D57;
  --dark: #1F1E1C;
  --dark-text: #F7F4EF;
  --border: rgba(31, 30, 28, 0.12);
  --radius: 4px;
  --shadow-hover: 0 12px 40px rgba(31,30,28,0.08);
  --transition: all 0.25s ease;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; font-size: 14px; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--bg-soft); }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-main { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; color: var(--ink); }
.logo-num { color: var(--accent); }
.logo-sub { font-size: 11px; letter-spacing: 0.08em; color: var(--text-sub); display: block; margin-top: -4px; }
.site-nav { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 14px; font-weight: 500; letter-spacing: 0.04em; color: var(--ink); position: relative; padding: 8px 2px; }
.nav-link::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--accent); transition: var(--transition);
}
.nav-link:hover { color: var(--accent); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.active { color: var(--accent); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; background: transparent; border: none; justify-content: center; align-items: center; padding: 0; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); transition: var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn { display: inline-flex; align-items: center; justify-content: center; font-weight: 600; transition: var(--transition); border: none; }
.btn-primary { background: var(--ink); color: var(--dark-text); padding: 14px 32px; font-size: 14px; border-radius: var(--radius); }
.btn-primary:hover { background: var(--accent); color: var(--ink); }
.btn-secondary { background: transparent; border: 1px solid var(--ink); padding: 14px 32px; font-size: 14px; border-radius: var(--radius); color: var(--ink); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { height: 40px; padding: 0 22px; font-size: 13px; }

.page-hero {
  position: relative;
  padding: 80px 0 64px;
  background-size: cover; background-position: center;
  color: var(--dark-text);
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(31,30,28,0.78) 0%, rgba(31,30,28,0.45) 60%, rgba(31,30,28,0.3) 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero-tag { font-size: 12px; letter-spacing: 0.12em; color: var(--accent); text-transform: uppercase; margin-bottom: 16px; font-weight: 600; }
.page-hero h1 { font-size: 48px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em; }
.page-hero-sub { font-size: 18px; color: rgba(247,244,239,0.85); max-width: 600px; line-height: 1.7; }

.intro-quote { padding: 96px 0; }
.intro-quote-inner { display: flex; gap: 48px; align-items: flex-start; }
.intro-quote-num { font-size: 14px; font-weight: 700; letter-spacing: 0.08em; color: var(--accent); white-space: nowrap; }
.intro-quote blockquote {
  font-family: Georgia, "Noto Serif SC", "Songti SC", serif;
  font-size: 30px; font-weight: 500; line-height: 1.5; color: var(--ink);
  margin-bottom: 20px; max-width: 720px;
}
.intro-quote p { font-size: 16px; color: var(--text-sub); max-width: 640px; }

.benefits-list { padding: 0 0 96px; }
.benefits-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 48px; }
.benefits-header h2 { font-size: 36px; font-weight: 700; letter-spacing: -0.01em; }
.benefits-header .en-label { font-size: 12px; letter-spacing: 0.1em; color: var(--text-sub); text-transform: uppercase; }
.benefit-row {
  display: flex; align-items: flex-start; gap: 40px;
  padding: 32px 0; border-bottom: 1px solid var(--border);
}
.benefit-row:hover { background: rgba(176, 141, 87, 0.04); }
.benefit-num {
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 48px; font-weight: 600; color: var(--accent);
  line-height: 1; min-width: 72px;
}
.benefit-content { flex: 1; }
.benefit-content h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.benefit-content p { font-size: 15px; color: var(--text-sub); line-height: 1.7; max-width: 560px; }

.split-section { padding: 0 0 96px; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-image { border-radius: var(--radius); overflow: hidden; }
.split-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.split-image:hover img { transform: scale(1.02); }
.split-content h2 { font-size: 36px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.01em; }
.split-content > p { font-size: 16px; color: var(--text-sub); margin-bottom: 24px; }
.split-points { list-style: none; }
.split-points li { font-size: 15px; color: var(--ink); padding: 12px 0; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.split-points li:last-child { border-bottom: none; }
.split-points li::before { content: ''; width: 16px; height: 2px; background: var(--accent); flex-shrink: 0; }

.stats-section { background: var(--dark); color: var(--dark-text); padding: 80px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.stat-label { font-size: 12px; letter-spacing: 0.08em; color: rgba(247,244,239,0.6); margin-bottom: 12px; text-transform: uppercase; }
.stat-value {
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 56px; font-weight: 600; color: var(--accent);
  line-height: 1.2; transition: var(--transition);
}
.stat-value:hover { transform: translateY(-2px); text-decoration: underline; text-underline-offset: 8px; text-decoration-color: var(--accent); }
.stat-unit { font-size: 18px; color: rgba(247,244,239,0.8); margin-left: 2px; }

.materials-section { padding: 96px 0; }
.materials-header { margin-bottom: 48px; display: flex; align-items: flex-end; justify-content: space-between; }
.materials-header h2 { font-size: 36px; font-weight: 700; }
.materials-header .en-label { font-size: 12px; letter-spacing: 0.1em; color: var(--text-sub); }
.materials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.material-card {
  background: var(--bg-soft); border-radius: var(--radius);
  padding: 40px 32px; border: 1px solid transparent; transition: var(--transition);
  position: relative;
}
.material-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(176,141,87,0.3); }
.material-icon {
  width: 48px; height: 48px; border-radius: var(--radius);
  background: rgba(176,141,87,0.12); display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: var(--accent); margin-bottom: 20px; font-weight: 700;
}
.material-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.material-card p { font-size: 14px; color: var(--text-sub); line-height: 1.6; margin-bottom: 16px; }
.material-link { font-size: 13px; font-weight: 600; color: var(--ink); display: inline-flex; align-items: center; gap: 4px; }
.material-link:hover { color: var(--accent); }
.material-link:hover span { transform: translateX(3px); }
.material-link span { transition: transform 0.25s ease; }

.faq-section { padding: 96px 0; }
.faq-inner { max-width: 800px; margin: 0 auto; }
.faq-title { text-align: center; font-size: 36px; font-weight: 700; margin-bottom: 48px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  width: 100%; background: transparent; border: none; text-align: left;
  font-size: 17px; font-weight: 600; color: var(--ink);
  padding: 24px 0; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  cursor: pointer; transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-icon { font-size: 22px; font-weight: 300; color: var(--accent); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer p { font-size: 15px; line-height: 1.8; color: var(--text-sub); padding: 0 0 24px; }

.cta-section { background: var(--dark); padding: 96px 0; }
.cta-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.cta-left h2 { font-size: 36px; color: var(--dark-text); margin-bottom: 16px; font-weight: 700; }
.cta-left p { font-size: 16px; color: rgba(247,244,239,0.7); margin-bottom: 32px; max-width: 420px; }
.cta-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.cta-left .btn-primary { background: var(--accent); color: var(--ink); }
.cta-left .btn-primary:hover { background: var(--dark-text); color: var(--ink); }
.cta-left .btn-secondary { border-color: rgba(247,244,239,0.5); color: var(--dark-text); }
.cta-left .btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.cta-contact { margin-top: 32px; display: flex; flex-direction: column; gap: 8px; }
.cta-contact span { font-size: 13px; color: rgba(247,244,239,0.6); }
.cta-form { background: transparent; }
.cta-form .form-field { margin-bottom: 24px; }
.cta-form label { display: block; font-size: 13px; color: rgba(247,244,239,0.6); margin-bottom: 6px; letter-spacing: 0.04em; }
.cta-form input, .cta-form textarea {
  width: 100%; background: transparent; border: none; border-bottom: 1px solid rgba(247,244,239,0.3);
  padding: 10px 0; color: var(--dark-text); font-size: 15px; transition: var(--transition);
}
.cta-form input:focus, .cta-form textarea:focus { outline: none; border-bottom-color: var(--accent); }
.cta-form textarea { resize: vertical; min-height: 80px; }
.cta-form button { margin-top: 16px; width: 100%; }
.form-status { display: none; font-size: 14px; padding: 12px 16px; border-radius: var(--radius); margin-bottom: 20px; }
.form-status.success { display: block; background: rgba(176,141,87,0.15); color: var(--accent); }
.form-status.error { display: block; background: rgba(31,30,28,0.9); color: var(--dark-text); }

.site-footer { background: var(--dark); color: var(--dark-text); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; }
.footer-brand p { font-size: 14px; color: rgba(247,244,239,0.6); margin-top: 16px; max-width: 280px; line-height: 1.7; }
.footer-logo { display: inline-flex; align-items: center; gap: 8px; }
.footer-nav h3 { font-size: 14px; color: var(--dark-text); margin-bottom: 16px; font-weight: 600; letter-spacing: 0.04em; }
.footer-nav a { display: block; font-size: 14px; color: rgba(247,244,239,0.6); padding: 5px 0; }
.footer-nav a:hover { color: var(--accent); }
.footer-info h3 { font-size: 14px; color: var(--dark-text); margin-bottom: 16px; font-weight: 600; letter-spacing: 0.04em; }
.footer-info p { font-size: 14px; color: rgba(247,244,239,0.6); padding: 3px 0; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(247,244,239,0.1); padding: 20px 0; }
.footer-bottom p { font-size: 13px; color: rgba(247,244,239,0.4); text-align: center; }

@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .page-hero h1 { font-size: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .split-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-quote blockquote { font-size: 26px; }
  .materials-grid { gap: 20px; }
  .cta-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .site-nav {
    position: fixed; top: 72px; left: 0; right: 0;
    background: var(--bg); flex-direction: column; align-items: flex-start;
    padding: 24px 16px; gap: 0; border-bottom: 1px solid var(--border);
    transform: translateY(-120%); transition: transform 0.35s ease;
  }
  .site-nav.open { transform: translateY(0); }
  .site-nav .nav-link { font-size: 20px; padding: 14px 0; width: 100%; border-bottom: 1px solid var(--border); }
  .site-nav .nav-link:last-of-type { border-bottom: none; }
  .site-nav .btn { width: 100%; margin-top: 16px; }
  .nav-toggle { display: flex; }
  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 36px; }
  .page-hero-sub { font-size: 16px; }
  .section { padding: 64px 0; }
  .intro-quote-inner { gap: 24px; flex-direction: column; }
  .intro-quote blockquote { font-size: 22px; }
  .benefit-row { gap: 20px; flex-direction: row; }
  .benefit-num { font-size: 36px; min-width: 48px; }
  .benefits-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-value { font-size: 42px; }
  .materials-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 64px 0; }
  .cta-left h2 { font-size: 28px; }
  .faq-title { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .split-content h2 { font-size: 28px; }
  .materials-header { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 520px) {
  .page-hero h1 { font-size: 28px; }
  .intro-quote blockquote { font-size: 20px; }
  .benefit-row { flex-direction: column; gap: 12px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .stat-value { font-size: 36px; }
  .cta-btns { flex-direction: column; }
  .cta-btns .btn { width: 100%; }
  .btn-primary, .btn-secondary { padding: 12px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-logo .logo-main { font-size: 20px; }
  .benefits-header h2 { font-size: 28px; }
  .materials-grid .material-card { padding: 28px 20px; }
}