/* roulang page: index */
:root {
  --ink: #16171B;
  --gold: #AF8848;
  --mist: #F6F4EF;
  --deep: #1D1E23;
  --line: #E7E2D8;
  --text-main: #26262B;
  --text-soft: #6F6D68;
  --leaves: #3E5C4E;
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --shadow-card: 0 2px 8px rgba(22,23,27,0.06);
  --transition: 200ms cubic-bezier(.4,0,.2,1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--mist);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition), border-color var(--transition), background-color var(--transition), opacity var(--transition), box-shadow var(--transition), transform var(--transition);
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  transition: all var(--transition);
}
input, select, textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--text-main);
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}
:focus-visible {
  outline: 2px solid rgba(175, 136, 72, 0.7);
  outline-offset: 2px;
}
.container-ky {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
@media (min-width: 640px) {
  .container-ky {
    padding-left: 32px;
    padding-right: 32px;
  }
}
.serif-title {
  font-family: 'Noto Serif SC', 'Songti', 'SimSun', serif;
  letter-spacing: 0.02em;
}
.section-padding {
  padding-top: 96px;
  padding-bottom: 96px;
}
@media (max-width: 640px) {
  .section-padding {
    padding-top: 64px;
    padding-bottom: 64px;
  }
}
.text-soft {
  color: var(--text-soft);
}
.gold-text {
  color: var(--gold);
}
.tabular-nums {
  font-variant-numeric: tabular-nums;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(246, 244, 239, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(231, 226, 216, 0.6);
}
.site-header .header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
}
.header-logo .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Noto Serif SC', serif;
  color: var(--gold);
  font-size: 16px;
  font-weight: 700;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.desktop-nav a {
  position: relative;
  font-size: 14px;
  color: var(--text-main);
  padding: 8px 0;
  line-height: 1.4;
}
.desktop-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  border-radius: 1px;
  background: var(--gold);
  transform: scaleX(0);
  opacity: 0.4;
  transition: transform var(--transition), opacity var(--transition);
}
.desktop-nav a:hover::after {
  transform: scaleX(1);
  opacity: 0.5;
}
.desktop-nav a.active::after {
  transform: scaleX(1);
  opacity: 1;
}
.nav-ghost {
  border: 1px solid var(--gold) !important;
  border-radius: var(--radius-md);
  padding: 10px 20px !important;
  font-weight: 600;
}
.nav-ghost::after {
  display: none !important;
}
.nav-ghost:hover {
  border-color: rgba(175, 136, 72, 0.8);
  color: var(--gold);
}

/* Mobile Tab */
.mobile-tab {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: rgba(29, 30, 35, 0.98);
  z-index: 200;
  align-items: stretch;
}
.mobile-tab a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
  gap: 3px;
  transition: color var(--transition);
}
.mobile-tab a svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}
.mobile-tab a.active {
  color: var(--gold);
}
@media (max-width: 639px) {
  .mobile-tab {
    display: flex;
  }
  body {
    padding-bottom: 72px;
  }
  .desktop-nav {
    display: none;
  }
}

/* Hero */
.hero-section {
  position: relative;
  padding: 80px 0 40px;
  background: radial-gradient(circle at 70% 20%, rgba(175, 136, 72, 0.05), transparent 45%), var(--mist);
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}
.hero-h1 {
  font-size: 60px;
  line-height: 1.15;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 20px;
}
@media (max-width: 1024px) {
  .hero-h1 {
    font-size: 44px;
  }
}
@media (max-width: 640px) {
  .hero-h1 {
    font-size: 28px;
  }
}
.hero-sub {
  font-size: 16px;
  color: var(--text-soft);
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gold);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-primary:hover {
  background: #9C7740;
  box-shadow: 0 4px 14px rgba(22, 23, 27, 0.12);
  transform: translateY(-1px);
}
.btn-primary:active {
  background: #7E6136;
  transform: translateY(0);
}
.btn-text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  border-bottom: 1px solid transparent;
}
.btn-text-link:hover {
  color: var(--gold);
  border-color: rgba(175, 136, 72, 0.4);
}
.btn-text-link .arrow {
  transition: transform var(--transition);
}
.btn-text-link:hover .arrow {
  transform: translateX(4px);
}

/* Metric Panel */
.metric-panel {
  position: relative;
  background: var(--deep);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  overflow: hidden;
}
.metric-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  pointer-events: none;
}
.metric-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.metric-item {
  text-align: center;
}
.metric-number {
  font-family: 'Noto Serif SC', 'Songti', serif;
  font-size: 42px;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.metric-label {
  margin-top: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.4;
}
@media (max-width: 640px) {
  .metric-panel {
    padding: 32px 20px;
  }
  .metric-number {
    font-size: 32px;
  }
}

/* Marquee */
.marquee-wrap {
  margin-top: 64px;
  overflow: hidden;
  border-top: 1px solid rgba(231, 226, 216, 0.8);
  border-bottom: 1px solid rgba(231, 226, 216, 0.8);
  padding: 16px 0;
  background: rgba(255, 255, 255, 0.35);
}
.marquee-track {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  animation: marquee 32s linear infinite;
  will-change: transform;
}
.marquee-wrap:hover .marquee-track {
  animation-play-state: paused;
}
.marquee-item {
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--text-soft);
  display: flex;
  align-items: center;
  gap: 48px;
}
.marquee-item::after {
  content: '·';
  color: var(--gold);
  font-weight: 700;
}
@keyframes marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Service Section */
.service-section {
  background: var(--mist);
  position: relative;
}
.service-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.service-head .h2 {
  font-size: 36px;
  line-height: 1.2;
  font-weight: 600;
  color: var(--ink);
}
@media (max-width: 640px) {
  .service-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .service-head .h2 {
    font-size: 28px;
  }
}
.service-head .sub-note {
  font-size: 13px;
  color: var(--text-soft);
  max-width: 280px;
  line-height: 1.6;
  text-align: right;
}
@media (max-width: 640px) {
  .service-head .sub-note {
    text-align: left;
  }
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .service-grid {
    grid-template-columns: 1fr;
  }
}
.service-card {
  position: relative;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: background-color var(--transition), box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  background: #fff;
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.service-card:hover::before {
  opacity: 1;
}
.service-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-icon svg {
  width: 40px;
  height: 40px;
  stroke: var(--gold);
  stroke-width: 1.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  line-height: 1.4;
}
.service-card p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.65;
  margin-bottom: 20px;
}
.service-card .more-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.service-card .more-link:hover {
  color: var(--gold);
}
.service-card .more-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
}
.service-card .more-link:hover svg {
  transform: translateX(3px);
}

/* Data Compare */
.data-section {
  background: rgba(255, 255, 255, 0.5);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.compare-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
  position: relative;
  margin: 48px 0 16px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}
@media (max-width: 768px) {
  .compare-wrap {
    grid-template-columns: 1fr;
  }
}
.compare-panel {
  padding: 40px 36px;
}
.compare-panel-dark {
  background: var(--deep);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.compare-panel-dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  opacity: 0.06;
  pointer-events: none;
}
.compare-panel-light {
  background: var(--mist);
  color: var(--text-main);
}
.compare-panel-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.compare-panel-dark .compare-panel-title {
  color: #fff;
}
.compare-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(231, 226, 216, 0.15);
  min-height: 48px;
  font-size: 15px;
}
.compare-panel-light .compare-row {
  border-color: rgba(231, 226, 216, 0.6);
}
.compare-row:last-child {
  border-bottom: none;
}
.compare-check,
.compare-cross {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.compare-check {
  background: rgba(175, 136, 72, 0.2);
  color: var(--gold);
}
.compare-cross {
  background: rgba(109, 109, 104, 0.12);
  color: var(--text-soft);
}
.compare-check svg,
.compare-cross svg {
  width: 14px;
  height: 14px;
  stroke-width: 2.5;
}
.vs-badge {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--mist);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-family: 'Noto Serif SC', serif;
  font-style: italic;
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  box-shadow: 0 4px 12px rgba(22, 23, 27, 0.08);
}
@media (max-width: 768px) {
  .vs-badge {
    display: none;
  }
}
.compare-caption {
  font-size: 13px;
  color: var(--text-soft);
  text-align: right;
  margin-top: 8px;
}

/* News Section */
.news-section {
  background: var(--mist);
  position: relative;
}
.news-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.news-head .h2 {
  font-size: 36px;
  line-height: 1.2;
  font-weight: 600;
}
@media (max-width: 640px) {
  .news-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .news-head .h2 {
    font-size: 28px;
  }
}
.all-news-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  border-bottom: 1px solid transparent;
}
.all-news-link:hover {
  color: var(--gold);
  border-color: rgba(175, 136, 72, 0.4);
}
.all-news-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}
.all-news-link:hover svg {
  transform: translateX(4px);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
}
.news-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.news-card:hover {
  box-shadow: 0 6px 20px rgba(22, 23, 27, 0.08);
  transform: translateY(-2px);
}
.news-card-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: rgba(231, 226, 216, 0.4);
}
.news-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-card-cover img {
  transform: scale(1.03);
}
.news-card-body {
  padding: 24px;
}
.category-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--gold);
  background: rgba(175, 136, 72, 0.1);
  border-radius: 999px;
  padding: 2px 10px;
  margin-bottom: 12px;
  line-height: 1.6;
}
.news-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}
.news-card-meta time {
  color: var(--text-soft);
}
.news-card-meta .read-link {
  color: var(--text-main);
  font-weight: 500;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-card-meta .read-link:hover {
  color: var(--gold);
}
.news-card-meta .read-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
}
.news-card-meta .read-link:hover svg {
  transform: translateX(3px);
}
.news-empty {
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-soft);
  font-size: 14px;
  background: rgba(255, 255, 255, 0.5);
}
.news-empty svg {
  width: 28px;
  height: 28px;
  stroke: var(--text-soft);
  stroke-width: 1.5;
}

/* FAQ */
.faq-section {
  background: rgba(255, 255, 255, 0.4);
  border-top: 1px solid var(--line);
}
.faq-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
}
@media (max-width: 1024px) {
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
.faq-intro {
  position: sticky;
  top: 120px;
  align-self: start;
}
@media (max-width: 1024px) {
  .faq-intro {
    position: static;
  }
}
.faq-intro .h2 {
  font-size: 36px;
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: 16px;
}
@media (max-width: 640px) {
  .faq-intro .h2 {
    font-size: 28px;
  }
}
.faq-intro p {
  font-size: 15px;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 24px;
}
.faq-link {
  font-size: 14px;
  color: var(--gold);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.faq-link:hover {
  color: #9C7740;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.open {
  border-color: rgba(175, 136, 72, 0.4);
  box-shadow: var(--shadow-card);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  min-height: 56px;
  cursor: pointer;
  background: transparent;
  width: 100%;
  text-align: left;
  line-height: 1.5;
}
.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--gold);
  font-weight: 400;
  transition: transform var(--transition);
  line-height: 1;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 400px;
}
.faq-answer-inner {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.7;
}

/* Contact / Form */
.contact-section {
  background: #fff;
  border-top: 1px solid rgba(175, 136, 72, 0.15);
  border-bottom: 1px solid rgba(175, 136, 72, 0.15);
}
.contact-inner {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
}
@media (max-width: 1024px) {
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
.contact-intro .h2 {
  font-size: 36px;
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: 16px;
}
@media (max-width: 640px) {
  .contact-intro .h2 {
    font-size: 28px;
  }
}
.contact-intro p {
  font-size: 15px;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 280px;
}
.contact-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-main);
}
.contact-meta-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--gold);
  stroke-width: 1.5;
  fill: none;
}
.contact-form-wrap {
  background: var(--mist);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: 32px;
}
@media (max-width: 640px) {
  .contact-form-wrap {
    padding: 24px 20px;
  }
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-main);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(175, 136, 72, 0.2);
}
.form-control::placeholder {
  color: rgba(111, 109, 104, 0.7);
}
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%236F6D68' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}
.form-submit-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gold);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition), transform var(--transition);
}
.form-submit-btn:hover {
  background: rgba(175, 136, 72, 0.9);
}
.form-submit-btn svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}
.form-submit-btn:hover svg {
  transform: translateX(-4px);
}
.form-caption {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-soft);
  text-align: center;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background: var(--deep);
  color: rgba(255, 255, 255, 0.8);
  border-top: 1px solid rgba(175, 136, 72, 0.2);
  padding: 64px 0 32px;
}
.footer-top {
  margin-bottom: 40px;
}
.footer-logo {
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-logo .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(175, 136, 72, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--gold);
  font-weight: 700;
}
.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
  max-width: 420px;
}
.footer-divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin: 32px 0;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
@media (max-width: 768px) {
  .footer-cols {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
.footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}
.footer-col a:hover {
  color: var(--gold);
}
.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scrollbar 点缀 */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--mist);
}
::-webkit-scrollbar-thumb {
  background: rgba(175, 136, 72, 0.4);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(175, 136, 72, 0.6);
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --ink: #16171B;
  --gold: #AF8848;
  --mist: #F6F4EF;
  --deep: #1D1E23;
  --line: #E7E2D8;
  --text-main: #26262B;
  --text-soft: #6F6D68;
  --leaves: #3E5C4E;
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --shadow-card: 0 10px 30px rgba(22,23,27,0.06);
  --ease: cubic-bezier(.4,0,.2,1);
  --header-h: 72px;
  --tab-h: 56px;
}

/* ===== 基础 ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--mist);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; }
button, input, select, textarea { font-family: inherit; }

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

/* ===== 焦点可见性 ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(175,136,72,0.7);
  outline-offset: 2px;
}

/* ===== 衬线标题 ===== */
.serif-title,
.article-title,
.related-title,
.article-not-found h1 {
  font-family: 'Noto Serif SC', Songti, SimSun, serif;
  letter-spacing: 0.02em;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(246,244,239,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(231,226,216,0.8);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--ink);
  color: #fff;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.desktop-nav a {
  position: relative;
  font-size: 15px;
  color: var(--text-main);
  padding: 8px 2px;
  transition: color 200ms var(--ease);
}
.desktop-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease);
}
.desktop-nav a:hover::after { transform: scaleX(0.5); }
.desktop-nav a.active::after { transform: scaleX(1); }
.desktop-nav a.active { color: var(--ink); font-weight: 500; }
.desktop-nav .nav-ghost {
  border: 1px solid var(--gold);
  border-radius: 10px;
  padding: 8px 20px;
  transition: all 200ms var(--ease);
}
.desktop-nav .nav-ghost::after { display: none; }
.desktop-nav .nav-ghost:hover {
  background: rgba(175,136,72,0.08);
  color: var(--gold);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
  padding: 32px 0 0;
}
.breadcrumb a {
  color: var(--text-soft);
  transition: color 200ms var(--ease);
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb-sep { color: var(--line); }
.breadcrumb-current {
  color: var(--text-main);
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 文章区域 ===== */
.article-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 0 24px;
}
.article-header {
  text-align: left;
  margin-bottom: 40px;
}
.article-title {
  font-size: 32px;
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
}
.article-meta .dot { color: var(--line); }

/* ===== 正文排版 ===== */
.article-body {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-main);
}
.article-body p {
  margin: 0 0 24px;
}
.article-body h2 {
  font-family: 'Noto Serif SC', Songti, SimSun, serif;
  font-size: 26px;
  line-height: 1.5;
  color: var(--ink);
  margin: 48px 0 20px;
  letter-spacing: 0.02em;
}
.article-body h3 {
  font-family: 'Noto Serif SC', Songti, SimSun, serif;
  font-size: 20px;
  line-height: 1.6;
  color: var(--ink);
  margin: 36px 0 16px;
}
.article-body ul,
.article-body ol {
  margin: 0 0 24px;
  padding-left: 24px;
}
.article-body ul li { margin-bottom: 8px; list-style: square; color: var(--text-main); }
.article-body ol li { margin-bottom: 8px; list-style: decimal; }
.article-body blockquote {
  margin: 32px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--gold);
  background: var(--mist);
  border-radius: 0 10px 10px 0;
  color: var(--text-soft);
  font-size: 15px;
}
.article-body a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-body img {
  border-radius: 10px;
  margin: 32px 0;
  width: 100%;
  height: auto;
  aspect-ratio: 16/7;
  object-fit: cover;
  background: var(--line);
}
.article-body code {
  background: var(--deep);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
}
.article-body pre {
  background: var(--deep);
  color: #fff;
  padding: 16px 20px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 24px 0;
}
.article-body pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* ===== 标签 ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(175,136,72,0.1);
  color: var(--gold);
  font-size: 12px;
  font-weight: 500;
}

/* ===== 相关推荐 ===== */
.related-section {
  max-width: 1200px;
  margin: 64px auto 0;
  padding: 0 24px;
}
.related-title {
  font-size: 28px;
  color: var(--ink);
  margin: 0 0 24px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  transition: box-shadow 200ms var(--ease), transform 200ms var(--ease);
}
.related-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.related-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--line);
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms var(--ease);
}
.related-card:hover .related-cover img {
  transform: scale(1.03);
}
.related-body {
  padding: 16px 20px 20px;
}
.related-body h3 {
  font-family: 'Noto Serif SC', Songti, SimSun, serif;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
  margin: 0 0 8px;
}
.related-body p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-date {
  font-size: 13px;
  color: var(--text-soft);
}

/* ===== 返回 ===== */
.article-back {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 0 80px;
  text-align: center;
}
.article-back a {
  display: inline-block;
  font-size: 15px;
  color: var(--text-main);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 2px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.article-back a:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* ===== 未找到 ===== */
.article-not-found {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}
.article-not-found h1 {
  font-size: 28px;
  color: var(--ink);
  margin-bottom: 12px;
}
.article-not-found p {
  color: var(--text-soft);
  margin-bottom: 24px;
}
.article-not-found a {
  display: inline-block;
  background: var(--gold);
  color: var(--ink);
  padding: 10px 24px;
  border-radius: 10px;
  font-weight: 600;
  transition: background 200ms var(--ease);
}
.article-not-found a:hover {
  background: #9C7740;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--deep);
  color: rgba(255,255,255,0.85);
  padding: 64px 0 32px;
  border-top: 1px solid rgba(175,136,72,0.2);
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
}
.footer-logo .logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--gold);
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  max-width: 400px;
  margin: 0;
}
.footer-divider {
  border: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: 0 0 40px;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
.footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  transition: color 200ms var(--ease);
}
.footer-col ul li a:hover {
  color: var(--gold);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ===== 移动端底部 Tab ===== */
.mobile-tab {
  display: none;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  .mobile-tab {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--tab-h);
    background: var(--deep);
    z-index: 200;
    justify-content: space-around;
    align-items: center;
  }
  .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 44px;
    min-width: 48px;
    color: rgba(255,255,255,0.7);
    font-size: 11px;
    transition: color 200ms var(--ease);
  }
  .tab-item.active {
    color: var(--gold);
  }
  .tab-item svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 1.5px;
    fill: none;
  }
  body {
    padding-bottom: calc(var(--tab-h) + 16px);
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-cols {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .container-ky {
    padding: 0 16px;
  }
  .article-title {
    font-size: 22px;
  }
  .article-body {
    font-size: 15px;
  }
  .related-section {
    padding: 0 16px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
  .breadcrumb {
    padding-top: 24px;
  }
}

/* roulang page: category1 */
:root {
    --ink: #16171B;
    --gold: #AF8848;
    --mist: #F6F4EF;
    --deep: #1D1E23;
    --line: #E7E2D8;
    --text-main: #26262B;
    --text-soft: #6F6D68;
    --leaves: #3E5C4E;
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 18px;
    --shadow: rgba(22, 23, 27, 0.06);
    --ease: cubic-bezier(.4, 0, .2, 1);
  }

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

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }

  body {
    margin: 0;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-main);
    background: var(--mist);
    line-height: 1.75;
    font-size: 16px;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease), opacity .2s var(--ease);
  }

  img {
    max-width: 100%;
    display: block;
    border: 0;
  }

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

  a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid rgba(175, 136, 72, .7);
    outline-offset: 2px;
    border-radius: 4px;
  }

  .container-ky {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: 72px;
    background: rgba(246, 244, 239, .96);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Noto Serif SC', 'Songti', 'SimSun', serif;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: .02em;
    color: var(--ink);
    white-space: nowrap;
  }

  .logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 6px;
    background: var(--ink);
    color: var(--gold);
    border-radius: var(--radius-sm);
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .02em;
  }

  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 28px;
  }

  .desktop-nav a {
    display: inline-block;
    position: relative;
    padding: 8px 2px;
    font-size: 14px;
    color: var(--text-main);
    line-height: 1.4;
  }

  .desktop-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 2px;
    width: 100%;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    opacity: .4;
    transition: transform .2s var(--ease), opacity .2s var(--ease);
  }

  .desktop-nav a:hover::after,
  .desktop-nav a.active::after {
    transform: scaleX(1);
    opacity: 1;
  }

  .desktop-nav a:hover {
    color: var(--ink);
  }

  .nav-ghost {
    border: 1px solid var(--gold);
    border-radius: 999px;
    padding: 8px 18px !important;
    background: transparent;
  }

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

  .nav-ghost:hover {
    border-color: rgba(175, 136, 72, .8);
    color: var(--gold);
  }

  .nav-ghost:active {
    border-color: #7E6136;
    color: #7E6136;
  }

  /* Hero */
  .category-hero {
    position: relative;
    aspect-ratio: 21 / 9;
    min-height: 320px;
    max-height: 520px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--deep);
  }

  .category-hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: .3;
  }

  .category-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(246, 244, 239, .92) 0%, rgba(246, 244, 239, .72) 52%, rgba(246, 244, 239, .32) 100%);
  }

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

  .category-hero h1 {
    margin: 0 0 14px;
    font-family: 'Noto Serif SC', 'Songti', 'SimSun', serif;
    font-size: 60px;
    line-height: 1.15;
    letter-spacing: .02em;
    color: var(--ink);
    font-weight: 600;
  }

  .category-hero p {
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-soft);
    max-width: 520px;
  }

  /* Breadcrumb */
  .breadcrumb {
    padding: 24px 0 0;
    font-size: 13px;
    color: var(--text-soft);
  }

  .breadcrumb a {
    color: var(--text-soft);
    transition: color .2s var(--ease);
  }

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

  .breadcrumb .sep {
    margin: 0 8px;
    color: rgba(111, 109, 104, .6);
  }

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

  /* Category content */
  .category-content {
    padding: 56px 0 96px;
  }

  .content-wrapper {
    max-width: 900px;
    margin: 0 auto;
  }

  .content-wrapper h2 {
    margin: 64px 0 20px;
    font-family: 'Noto Serif SC', 'Songti', 'SimSun', serif;
    font-size: 32px;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: .01em;
    color: var(--ink);
  }

  .content-wrapper h2:first-child {
    margin-top: 0;
  }

  .content-wrapper h3 {
    margin: 40px 0 16px;
    font-size: 22px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--ink);
  }

  .content-wrapper p {
    margin: 0 0 24px;
    font-size: 16px;
    line-height: 1.85;
    color: var(--text-main);
  }

  .content-wrapper .feature-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin: 32px 0;
    background: #E9E5DC;
  }

  .guide-feature-box {
    border-left: 2px solid var(--gold);
    background: rgba(175, 136, 72, .04);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 20px 24px;
    margin: 28px 0 36px;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .guide-feature-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-main);
  }

  .guide-feature-dot {
    flex: none;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gold);
    margin-top: 9px;
  }

  .guide-check-list {
    list-style: none;
    margin: 20px 0 32px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .guide-check-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-main);
  }

  .guide-check-list li::before {
    content: '';
    flex: none;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--leaves);
    margin-top: 9px;
  }

  .guide-info-box {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
    padding: 24px 28px;
    margin-top: 56px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .guide-info-box p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-soft);
  }

  .guide-info-box a {
    color: var(--gold);
    font-size: 14px;
    font-weight: 600;
    transition: color .2s var(--ease);
  }

  .guide-info-box a:hover {
    color: #7E6136;
    text-decoration: underline;
  }

  /* Footer */
  .site-footer {
    background: var(--deep);
    color: rgba(255, 255, 255, .72);
    padding: 56px 0 28px;
    border-top: 1px solid rgba(175, 136, 72, .2);
  }

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

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Noto Serif SC', 'Songti', 'SimSun', serif;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: .02em;
    color: #fff;
  }

  .footer-desc {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, .6);
  }

  .footer-divider {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, .12);
    margin: 28px 0;
  }

  .footer-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .footer-col-title {
    font-size: 13px;
    letter-spacing: .08em;
    color: rgba(255, 255, 255, .4);
    margin-bottom: 14px;
  }

  .footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-col a {
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    line-height: 1.6;
    transition: color .2s var(--ease);
  }

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

  .footer-col li {
    font-size: 14px;
    color: rgba(255, 255, 255, .7);
    line-height: 1.6;
  }

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    font-size: 13px;
    color: rgba(255, 255, 255, .4);
  }

  /* Mobile bottom tab */
  .mobile-tab-bar {
    display: none;
  }

  /* Common UI components (shared design system) */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--gold);
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    min-height: 44px;
    transition: background-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
  }

  .btn-primary:hover {
    background: #9C7740;
    box-shadow: 0 8px 20px rgba(22, 23, 27, .06);
    transform: translateY(-1px);
  }

  .btn-primary:active {
    background: #7E6136;
    transform: translateY(0);
  }

  .btn-primary:disabled {
    background: #DDD8CE;
    color: #9C9A94;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    padding: 11px 22px;
    border: 1px solid var(--gold);
    border-radius: var(--radius-md);
    cursor: pointer;
    min-height: 44px;
    transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
  }

  .btn-ghost:hover {
    border-color: rgba(175, 136, 72, .8);
    color: var(--gold);
  }

  .btn-ghost:active {
    border-color: #7E6136;
    color: #7E6136;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: rgba(175, 136, 72, .1);
    color: var(--gold);
    font-size: 12px;
    padding: 2px 10px;
    line-height: 1.5;
    white-space: nowrap;
  }

  /* Responsive */
  @media (max-width: 1024px) {
    .category-hero h1 {
      font-size: 52px;
    }
  }

  @media (max-width: 768px) {
    .category-hero {
      aspect-ratio: 16 / 9;
      min-height: 260px;
    }

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

    .content-wrapper h2 {
      font-size: 26px;
    }

    .content-wrapper h3 {
      font-size: 20px;
    }

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

    .category-content {
      padding: 40px 0 80px;
    }
  }

  @media (max-width: 639px) {
    .site-header {
      height: 64px;
    }

    .header-inner {
      height: 64px;
    }

    .desktop-nav {
      display: none;
    }

    .mobile-tab-bar {
      display: flex;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: rgba(29, 30, 35, .98);
      z-index: 60;
      border-top: 1px solid rgba(255, 255, 255, .06);
    }

    .mobile-tab-bar a {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 4px;
      color: rgba(255, 255, 255, .7);
      font-size: 11px;
      line-height: 1.2;
      min-height: 56px;
      transition: color .2s var(--ease);
    }

    .mobile-tab-bar a:hover {
      color: rgba(255, 255, 255, .9);
    }

    .mobile-tab-bar a.active {
      color: var(--gold);
    }

    body {
      padding-bottom: 72px;
    }

    .category-hero {
      aspect-ratio: 4 / 3;
      min-height: 240px;
    }

    .category-hero h1 {
      font-size: 28px;
      margin-bottom: 10px;
    }

    .category-hero p {
      font-size: 14px;
    }

    .category-content {
      padding: 32px 0 64px;
    }

    .content-wrapper h2 {
      font-size: 22px;
      margin-top: 48px;
    }

    .content-wrapper h3 {
      font-size: 18px;
      margin-top: 32px;
    }

    .content-wrapper p {
      font-size: 15px;
    }

    .guide-feature-box {
      padding: 16px 18px;
    }

    .guide-info-box {
      padding: 20px;
    }

    .footer-bottom {
      flex-direction: column;
      gap: 8px;
      align-items: flex-start;
    }

    .container-ky {
      padding: 0 20px;
    }
  }

  @media (max-width: 520px) {
    .header-logo {
      font-size: 17px;
    }

    .logo-mark {
      min-width: 30px;
      height: 30px;
      font-size: 13px;
    }

    .category-hero {
      aspect-ratio: 4 / 3;
    }

    .category-hero h1 {
      font-size: 26px;
    }
  }

/* roulang page: category2 */
:root {
      --ink: #16171B;
      --gold: #AF8848;
      --mist: #F6F4EF;
      --deep: #1D1E23;
      --line: #E7E2D8;
      --text-main: #26262B;
      --text-soft: #6F6D68;
      --leaves: #3E5C4E;
      --radius-sm: 4px;
      --radius-md: 10px;
      --radius-lg: 18px;
      --shadow-card: 0 4px 24px rgba(22, 23, 27, 0.06);
      --shadow-hover: 0 8px 30px rgba(22, 23, 27, 0.08);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
      background: var(--mist);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      height: 72px;
      background: rgba(246, 244, 239, 0.96);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid rgba(231, 226, 216, 0.8);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }

    .header-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-family: "Noto Serif SC", Songti, SimSun, serif;
      font-weight: 600;
      font-size: 18px;
      color: var(--ink);
      letter-spacing: 0.02em;
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      background: var(--gold);
      color: var(--ink);
      border-radius: 6px;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0;
    }

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

    .desktop-nav a {
      font-size: 15px;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
      transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .desktop-nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      height: 2px;
      width: 100%;
      background: var(--gold);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .desktop-nav a:hover {
      color: var(--ink);
    }

    .desktop-nav a:hover::after {
      transform: scaleX(0.5);
    }

    .desktop-nav a.active {
      color: var(--ink);
    }

    .desktop-nav a.active::after {
      transform: scaleX(1);
    }

    .desktop-nav .nav-ghost {
      border: 1px solid var(--gold);
      color: var(--ink);
      padding: 8px 20px;
      border-radius: 10px;
      transition: background-color 0.2s, border-color 0.2s, color 0.2s;
    }

    .desktop-nav .nav-ghost::after {
      display: none;
    }

    .desktop-nav .nav-ghost:hover {
      border-color: rgba(175, 136, 72, 0.8);
      color: var(--gold);
      background: rgba(175, 136, 72, 0.04);
    }

    /* Footer */
    .site-footer {
      background: var(--deep);
      color: rgba(255, 255, 255, 0.78);
      border-top: 1px solid rgba(175, 136, 72, 0.2);
      padding: 64px 0 32px;
    }

    .footer-top {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 32px;
    }

    .footer-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-family: "Noto Serif SC", Songti, SimSun, serif;
      font-size: 20px;
      font-weight: 600;
      color: #fff;
    }

    .footer-desc {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
      max-width: 480px;
    }

    .footer-divider {
      border: none;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 32px;
    }

    .footer-cols {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-bottom: 40px;
    }

    .footer-col-title {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col a {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.65);
      transition: color 0.2s;
    }

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

    .footer-col li {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.5);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.42);
    }

    /* Mobile bottom tab */
    .mobile-tab {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: rgba(29, 30, 35, 0.98);
      z-index: 100;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .mobile-tab-inner {
      display: flex;
      height: 100%;
    }

    .tab-item {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2px;
      font-size: 11px;
      color: rgba(255, 255, 255, 0.7);
      transition: color 0.2s;
      min-height: 44px;
    }

    .tab-item svg {
      width: 20px;
      height: 20px;
    }

    .tab-item.active {
      color: var(--gold);
    }

    /* Badge */
    .badge-gold {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: rgba(175, 136, 72, 0.1);
      color: var(--gold);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 500;
      padding: 4px 14px;
      line-height: 1.4;
    }

    /* Card */
    .card-hover {
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--mist);
      transition: box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s;
    }

    .card-hover:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(175, 136, 72, 0.3);
      transform: translateY(-2px);
    }

    /* Section spacing */
    .section-ky {
      padding-top: 96px;
      padding-bottom: 96px;
    }

    @media (max-width: 768px) {
      .section-ky {
        padding-top: 64px;
        padding-bottom: 64px;
      }
    }

    /* Typography helpers */
    .text-serif-ky {
      font-family: "Noto Serif SC", Songti, SimSun, serif;
      font-weight: 600;
      letter-spacing: 0.02em;
      line-height: 1.3;
    }

    .text-soft {
      color: var(--text-soft);
    }

    /* Focus */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid rgba(175, 136, 72, 0.7);
      outline-offset: 2px;
    }

    /* Custom ordered list */
    .process-list {
      list-style: none;
      counter-reset: step;
    }

    .process-list li {
      counter-increment: step;
      position: relative;
      padding-left: 56px;
      padding-bottom: 28px;
    }

    .process-list li:last-child {
      padding-bottom: 0;
    }

    .process-list li::before {
      content: counter(step, decimal-leading-zero);
      position: absolute;
      left: 0;
      top: 0;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--deep);
      color: var(--gold);
      font-family: "Noto Serif SC", Songti, SimSun, serif;
      font-size: 14px;
      font-weight: 600;
      display: flex;
      align-items: center;
      justify-content: center;
      line-height: 1;
    }

    /* Static info block */
    .info-block {
      border: 1px solid var(--line);
      border-radius: 10px;
      background: #fff;
      padding: 24px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    .info-block a {
      color: var(--gold);
      font-weight: 500;
      border-bottom: 1px solid rgba(175, 136, 72, 0.4);
      padding-bottom: 2px;
      transition: border-color 0.2s, color 0.2s;
      white-space: nowrap;
    }

    .info-block a:hover {
      border-color: var(--gold);
      color: #9C7740;
    }

    /* Hero cover */
    .category-hero {
      position: relative;
      border-radius: 18px;
      overflow: hidden;
      min-height: 420px;
      display: flex;
      align-items: flex-end;
      background-size: cover;
      background-position: center;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(246, 244, 239, 0.1) 0%, rgba(246, 244, 239, 0.85) 100%);
    }

    .category-hero .hero-content {
      position: relative;
      padding: 48px 48px 40px;
      max-width: 640px;
    }

    @media (max-width: 768px) {
      .category-hero {
        min-height: 280px;
        border-radius: 10px;
      }

      .category-hero .hero-content {
        padding: 24px 20px 20px;
      }
    }

    /* Body content */
    .prose-ky {
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .prose-ky p {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-main);
      margin-bottom: 24px;
    }

    .prose-ky h2 {
      font-family: "Noto Serif SC", Songti, SimSun, serif;
      font-size: 28px;
      line-height: 1.4;
      color: var(--ink);
      margin: 48px 0 16px;
      letter-spacing: 0.02em;
    }

    .prose-ky h3 {
      font-family: "Noto Serif SC", Songti, SimSun, serif;
      font-size: 20px;
      color: var(--ink);
      margin: 32px 0 12px;
    }

    @media (max-width: 768px) {
      .prose-ky h2 {
        font-size: 22px;
      }

      .prose-ky p {
        font-size: 15px;
      }
    }

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

    @media (max-width: 768px) {
      .site-header {
        height: 64px;
      }

      .desktop-nav {
        display: none;
      }

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

    @media (max-width: 640px) {
      .mobile-tab {
        display: block;
      }

      body {
        padding-bottom: 72px;
      }

      .header-logo {
        font-size: 16px;
      }

      .logo-mark {
        width: 30px;
        height: 30px;
        font-size: 13px;
      }

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

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

      .category-hero .hero-content {
        padding: 20px 16px 16px;
      }
    }