/* roulang page: index */
:root {
  --ink: #1C1C1A;
  --paper: #F7F4EF;
  --white: #FFFFFF;
  --teal: #2F4A4A;
  --bronze: #A67C52;
  --text: #3D3D3A;
  --text-light: #8A8782;
  --border: #E6E1D8;
  --radius: 6px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(28,28,26,0.04), 0 8px 24px rgba(28,28,26,0.06);
  --shadow-hover: 0 4px 12px rgba(28,28,26,0.08), 0 16px 32px rgba(28,28,26,0.08);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --space-section: clamp(3.5rem, 7vw, 5.5rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--paper);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease-out;
}

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

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

input, select, textarea {
  font: inherit;
  width: 100%;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  color: var(--ink);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

/* ===== Layout ===== */
.layout {
  display: flex;
  min-height: 100vh;
}

.main-wrapper {
  flex: 1;
  margin-left: 232px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.content {
  flex: 1;
  width: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: clamp(1.5rem, 5vw, 4rem);
  padding-right: clamp(1.5rem, 5vw, 4rem);
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 232px;
  background: var(--ink);
  color: rgba(255,255,255,0.8);
  display: flex;
  flex-direction: column;
  padding: 2.25rem 1.375rem 1.5rem;
  z-index: 60;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 2.25rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 1.75rem;
}

.brand-mark {
  width: 42px;
  height: 42px;
  background: var(--bronze);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  flex-shrink: 0;
}

.brand-text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: 0.03em;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.nav-item {
  display: block;
  padding: 0.625rem 0.875rem;
  border-radius: 4px;
  color: rgba(255,255,255,0.72);
  font-size: 0.9375rem;
  font-weight: 400;
  position: relative;
  transition: all .2s ease-out;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--bronze);
  border-radius: 3px;
  transition: height .2s ease-out;
}

.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,0.06);
}

.nav-item:hover::before {
  height: 18px;
}

.nav-item.active {
  color: #fff;
  background: rgba(255,255,255,0.06);
  font-weight: 500;
}

.nav-item.active::before {
  height: 20px;
}

.sidebar-footer {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 70;
  height: 64px;
  background: rgba(247,244,239,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.25rem;
}

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

.mobile-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mobile-brand .brand-mark {
  width: 34px;
  height: 34px;
  font-size: 1rem;
}

.mobile-brand .brand-text {
  font-size: 1rem;
  color: var(--ink);
}

.menu-toggle {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  font-size: 1.25rem;
  border-radius: 6px;
  transition: background .2s;
}

.menu-toggle:hover {
  background: rgba(28,28,26,0.06);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(28,28,26,0.1);
  z-index: 65;
  padding: 0.75rem 1.25rem 1.25rem;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu .nav-item {
  color: var(--ink);
  border-radius: 6px;
  padding: 0.75rem 0.875rem;
}

.mobile-menu .nav-item:hover {
  background: var(--paper);
  color: var(--teal);
}

.mobile-menu .nav-item.active {
  background: var(--paper);
  color: var(--teal);
  font-weight: 500;
}

.mobile-menu .nav-item.active::before {
  height: 16px;
  background: var(--bronze);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 48px;
  padding: 0 2rem;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: all .2s ease-out;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
}

.btn-primary:hover {
  background: var(--teal);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(28,28,26,0.15);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(28,28,26,0.12);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-1px);
}

.btn-bronze {
  background: var(--bronze);
  color: #fff;
}

.btn-bronze:hover {
  background: #b8895e;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(166,124,82,0.25);
}

.btn-block {
  width: 100%;
}

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

/* ===== Tag ===== */
.tag {
  display: inline-block;
  padding: 0.1875rem 0.625rem;
  border-radius: 3px;
  font-size: 0.75rem;
  border: 1px solid var(--border);
  color: var(--text-light);
  background: var(--white);
  letter-spacing: 0.02em;
}

.tag-teal {
  border-color: rgba(47,74,74,0.3);
  color: var(--teal);
}

/* ===== Section ===== */
.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.section-head {
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.section-title::before {
  content: '';
  display: block;
  width: 32px;
  height: 3px;
  background: var(--bronze);
  border-radius: 3px;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-light);
  max-width: 640px;
  font-size: 0.9375rem;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  padding: 5rem 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(247,244,239,0.88);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: clamp(1.5rem, 5vw, 4rem);
  padding-right: clamp(1.5rem, 5vw, 4rem);
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 0.8125rem;
  color: var(--teal);
  background: rgba(255,255,255,0.7);
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  max-width: 680px;
  margin-bottom: 1.25rem;
  animation: fadeUp .4s ease-out both;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: var(--text-light);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 2.25rem;
  animation: fadeUp .4s ease-out .1s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  animation: fadeUp .4s ease-out .2s both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Pain Points ===== */
.pain-points {
  border-bottom: 1px solid var(--border);
}

.question-list {
  display: flex;
  flex-direction: column;
}

.question-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.375rem 0;
  border-bottom: 1px solid var(--border);
  transition: padding-left .2s ease-out;
}

.question-item:last-child {
  border-bottom: none;
}

.question-item:hover {
  padding-left: 0.375rem;
}

.question-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(47,74,74,0.08);
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-serif);
  margin-top: 0.125rem;
}

.question-text {
  font-size: 1rem;
  color: var(--text);
  line-height: 1.65;
}

/* ===== Solution Cards ===== */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.solution-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .2s ease-out;
  display: flex;
  flex-direction: column;
}

.solution-card:hover {
  transform: translateY(-4px);
  border-color: var(--teal);
  box-shadow: var(--shadow-hover);
}

.solution-cover {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--paper);
}

.solution-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease-out;
}

.solution-card:hover .solution-cover img {
  transform: scale(1.03);
}

.solution-tag {
  position: absolute;
  top: 0.875rem;
  left: 0.875rem;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(4px);
  padding: 0.1875rem 0.625rem;
  border-radius: 3px;
  font-size: 0.75rem;
  color: var(--teal);
  font-weight: 500;
  border: 1px solid var(--border);
}

.solution-body {
  padding: 1.5rem 1.5rem 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.solution-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.625rem;
}

.solution-body p {
  font-size: 0.9375rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: var(--teal);
  font-weight: 500;
  transition: gap .2s ease-out;
}

.card-link:hover {
  gap: 0.625rem;
}

.solution-card.card-dark {
  background: var(--teal);
  border-color: var(--teal);
}

.solution-card.card-dark .solution-body h3 {
  color: #fff;
}

.solution-card.card-dark .solution-body p {
  color: rgba(255,255,255,0.72);
}

.solution-card.card-dark .card-link {
  color: #fff;
}

/* ===== Stats ===== */
.stats-area {
  border-top: 1px solid var(--border);
}

.stats-bar {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 3rem 0 0.5rem;
}

.stats-item {
  text-align: center;
  flex: 1;
}

.stats-num {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 3vw, 2.5rem);
  color: var(--bronze);
  font-weight: 600;
  display: block;
  line-height: 1.2;
  margin-bottom: 0.375rem;
}

.stats-label {
  font-size: 0.875rem;
  color: var(--text-light);
  display: block;
}

.stats-note {
  font-size: 0.8125rem;
  color: var(--text-light);
  display: block;
  margin-top: 0.125rem;
}

/* ===== Form Trigger ===== */
.form-trigger-area {
  border-bottom: 1px solid var(--border);
}

.form-trigger-box {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.form-trigger-box::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--bronze);
}

.form-trigger-box h3 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-trigger-box p {
  color: var(--text-light);
  font-size: 0.9375rem;
}

.privacy-note {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 1rem;
  max-width: 460px;
  line-height: 1.6;
}

/* ===== News List ===== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.news-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.375rem 1.5rem;
  transition: all .2s ease-out;
}

.news-card:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.news-time {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  padding: 0.5rem 0;
  border-left: 2px solid var(--teal);
  color: var(--teal);
  font-size: 0.875rem;
  line-height: 1.5;
}

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

.news-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--ink);
  transition: color .2s;
}

.news-card:hover .news-body h3 {
  color: var(--teal);
}

.news-body p {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0.625rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.news-link {
  font-size: 0.8125rem;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  transition: gap .2s;
}

.news-card:hover .news-link {
  gap: 0.5rem;
}

.news-empty {
  text-align: center;
  padding: 3.5rem 1.5rem;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-light);
}

.news-empty i {
  font-size: 2rem;
  color: var(--border);
  margin-bottom: 0.75rem;
}

.news-empty p {
  font-size: 0.9375rem;
}

/* ===== FAQ ===== */
.faq-list {
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
  text-align: left;
  width: 100%;
  color: var(--ink);
  font-size: 0.9375rem;
  transition: color .2s;
  font-weight: 400;
}

.faq-question:hover {
  color: var(--teal);
}

.faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bronze);
  font-size: 0.8125rem;
  transition: transform .25s ease-out;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease-out;
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  max-height: 320px;
  padding-bottom: 1.125rem;
}

.faq-answer-inner {
  padding-right: 3rem;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--teal);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(166,124,82,0.18);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: 20%;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.375rem, 2.5vw, 2rem);
  font-weight: 600;
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255,255,255,0.72);
  font-size: 0.9375rem;
  margin-bottom: 1.75rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 0.875rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2.5rem;
  margin-top: var(--space-section);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-brand {
  max-width: 280px;
}

.footer-brand .brand-text {
  color: var(--ink);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand .brand-mark {
  width: 28px;
  height: 28px;
  font-size: 0.8125rem;
  display: inline-flex;
}

.footer-brand p {
  font-size: 0.8125rem;
  color: var(--text-light);
  line-height: 1.7;
}

.footer-nav {
  display: flex;
  gap: 2.5rem;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.footer-nav-col h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.375rem;
  font-family: var(--font-sans);
  letter-spacing: 0.05em;
}

.footer-nav-col a {
  font-size: 0.8125rem;
  color: var(--text-light);
  transition: color .2s;
}

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

.footer-copy {
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-light);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28,28,26,0.5);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity .2s ease-out;
}

.modal-overlay.open {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: var(--white);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 2rem;
  position: relative;
  box-shadow: 0 24px 64px rgba(28,28,26,0.2);
  transform: scale(0.96);
  transition: transform .2s ease-out;
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-light);
  font-size: 1.125rem;
  transition: background .2s, color .2s;
}

.modal-close:hover {
  background: var(--paper);
  color: var(--ink);
}

.modal-content h3 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 0.625rem;
}

.modal-desc {
  color: var(--text-light);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.modal-form .form-group {
  margin-bottom: 1rem;
}

.modal-form label {
  display: block;
  font-size: 0.8125rem;
  color: var(--text);
  margin-bottom: 0.3125rem;
  font-weight: 500;
}

.modal-form input,
.modal-form select {
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 0.75rem;
  font-size: 0.875rem;
  background: var(--paper);
  transition: border-color .2s, box-shadow .2s;
  color: var(--text);
}

.modal-form input:focus,
.modal-form select:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(47,74,74,0.1);
}

.modal-form .btn {
  margin-top: 0.5rem;
}

.form-privacy {
  font-size: 0.75rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-top: 1rem;
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .sidebar {
    display: none;
  }

  .main-wrapper {
    margin-left: 0;
  }

  .mobile-header {
    display: block;
  }
}

@media (max-width: 767px) {
  .hero {
    min-height: auto;
    padding: 3.5rem 0;
  }

  .hero-title {
    font-size: clamp(1.75rem, 6vw, 2.25rem);
  }

  .hero-subtitle {
    font-size: 0.9375rem;
  }

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

  .stats-bar {
    flex-wrap: wrap;
    gap: 1.25rem 2rem;
  }

  .stats-item {
    flex: 0 0 calc(50% - 1rem);
  }

  .news-card {
    flex-direction: column;
    gap: 0.75rem;
  }

  .news-time {
    width: auto;
    border-left: none;
    border-bottom: 2px solid rgba(47,74,74,0.3);
    padding: 0 0 0.25rem;
    text-align: left;
    font-size: 0.8125rem;
  }

  .form-trigger-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .faq-question {
    font-size: 0.875rem;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

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

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

  .modal-content {
    padding: 1.5rem;
  }

  .brand-text {
    font-size: 0.9375rem;
  }
}

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --ink: #1C1C1A;
            --paper: #F7F4EF;
            --white: #FFFFFF;
            --teal: #2F4A4A;
            --bronze: #A67C52;
            --text-main: #3D3D3A;
            --text-weak: #8A8782;
            --border-line: #E6E1D8;
            --radius-md: 6px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(28, 28, 26, 0.04), 0 8px 24px rgba(28, 28, 26, 0.06);
            --shadow-hover: 0 2px 6px rgba(28, 28, 26, 0.06), 0 14px 32px rgba(28, 28, 26, 0.09);
            --font-title: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --transition: 0.2s ease-out;
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background: var(--paper);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 0.9375rem;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 0.9375rem;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-title);
            color: var(--ink);
            line-height: 1.25;
            letter-spacing: 0.01em;
        }

        h1 {
            font-size: clamp(2rem, 4vw, 3.25rem);
            font-weight: 700;
        }

        h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.25rem);
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

        h3 {
            font-size: 1.25rem;
            font-weight: 600;
        }

        .container {
            max-width: 1200px;
            padding-left: clamp(1.5rem, 5vw, 4rem);
            padding-right: clamp(1.5rem, 5vw, 4rem);
            margin: 0 auto;
            width: 100%;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0 2rem;
            height: 48px;
            border-radius: var(--radius-md);
            font-size: 0.9375rem;
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid transparent;
            line-height: 1;
        }

        .btn-primary {
            background: var(--ink);
            color: #fff;
            border-color: var(--ink);
        }

        .btn-primary:hover {
            background: var(--teal);
            border-color: var(--teal);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(47, 74, 74, 0.22);
        }

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

        .btn-secondary {
            background: transparent;
            color: var(--ink);
            border-color: var(--ink);
        }

        .btn-secondary:hover {
            border-color: var(--teal);
            color: var(--teal);
            background: rgba(47, 74, 74, 0.04);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-bronze {
            background: var(--bronze);
            color: #fff;
            border-color: var(--bronze);
        }

        .btn-bronze:hover {
            background: #b88a5e;
            border-color: #b88a5e;
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(166, 124, 82, 0.3);
        }

        .btn-bronze:active {
            transform: translateY(0);
        }

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

        /* ========== 左侧导航 ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 232px;
            height: 100vh;
            background: var(--white);
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
            z-index: 100;
            padding: 2rem 1.25rem 1.5rem;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0 0.5rem 2rem;
            border-bottom: 1px solid var(--border-line);
            margin-bottom: 1.5rem;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--ink);
            color: var(--paper);
            font-family: var(--font-title);
            font-size: 1.25rem;
            font-weight: 700;
            border-radius: var(--radius-md);
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .brand-name {
            font-family: var(--font-title);
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-item {
            display: block;
            padding: 0.75rem 0.75rem 0.75rem 1rem;
            font-size: 0.9375rem;
            color: var(--text-main);
            border-left: 3px solid transparent;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            transition: all var(--transition);
            position: relative;
        }

        .nav-item:hover {
            color: var(--teal);
            border-left-color: var(--bronze);
            background: rgba(166, 124, 82, 0.05);
            padding-left: 1.25rem;
        }

        .nav-item.active {
            color: var(--ink);
            font-weight: 600;
            border-left-color: var(--bronze);
            background: rgba(230, 225, 216, 0.35);
        }

        .sidebar-foot {
            padding: 1rem 0.5rem 0;
            border-top: 1px solid var(--border-line);
            font-size: 0.75rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ========== 移动端顶部导航 ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--white);
            border-bottom: 1px solid var(--border-line);
            z-index: 200;
            padding: 0 1.25rem;
            align-items: center;
            justify-content: space-between;
        }

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

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-family: var(--font-title);
            font-weight: 700;
            font-size: 1.0625rem;
            color: var(--ink);
        }

        .menu-btn {
            width: 42px;
            height: 42px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius-md);
            transition: background var(--transition);
        }

        .menu-btn:hover {
            background: rgba(230, 225, 216, 0.5);
        }

        .menu-btn span {
            width: 20px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all 0.25s ease-out;
        }

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

        .menu-btn.open span:nth-child(2) {
            opacity: 0;
        }

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--white);
            border-bottom: 1px solid var(--border-line);
            z-index: 190;
            padding: 0.75rem 1.25rem 1.25rem;
            box-shadow: 0 12px 24px rgba(28, 28, 26, 0.06);
        }

        .mobile-menu.show {
            display: block;
            animation: fadeIn 0.25s ease-out;
        }

        .mobile-nav-item {
            display: block;
            padding: 0.875rem 0.75rem;
            border-radius: var(--radius-md);
            font-size: 0.9375rem;
            color: var(--text-main);
            border-left: 3px solid transparent;
            transition: all var(--transition);
        }

        .mobile-nav-item:hover,
        .mobile-nav-item.active {
            color: var(--ink);
            border-left-color: var(--bronze);
            background: rgba(230, 225, 216, 0.35);
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== 主内容区 ========== */
        .main-content {
            margin-left: 232px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== 页面 Hero ========== */
        .page-hero {
            background: linear-gradient(180deg, rgba(247, 244, 239, 0.92) 0%, var(--paper) 100%),
                url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
            padding: clamp(4rem, 8vw, 7rem) 0 clamp(3rem, 6vw, 5rem);
            border-bottom: 1px solid var(--border-line);
            position: relative;
        }

        .page-hero-inner {
            max-width: 760px;
        }

        .page-hero .hero-label {
            display: inline-block;
            font-size: 0.8125rem;
            letter-spacing: 0.08em;
            color: var(--teal);
            background: rgba(47, 74, 74, 0.08);
            padding: 0.25rem 0.875rem;
            border-radius: 3px;
            margin-bottom: 1.25rem;
            text-transform: uppercase;
            font-weight: 500;
        }

        .page-hero h1 {
            margin-bottom: 1.25rem;
            font-size: clamp(2.2rem, 4.5vw, 3.5rem);
        }

        .page-hero .lead {
            font-size: 1.0625rem;
            color: var(--text-main);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .hero-actions {
            display: flex;
            gap: 0.875rem;
            flex-wrap: wrap;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: clamp(3.5rem, 6vw, 5.5rem) 0;
        }

        .section-header {
            margin-bottom: 2.5rem;
            max-width: 720px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            letter-spacing: 0.1em;
            color: var(--bronze);
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
            position: relative;
            padding-left: 1.5rem;
        }

        .section-header .section-tag::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            width: 18px;
            height: 1px;
            background: var(--bronze);
        }

        .section-header .desc {
            color: var(--text-weak);
            font-size: 0.9375rem;
            line-height: 1.75;
        }

        /* ========== 图文简介块 ========== */
        .intro-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: clamp(2rem, 5vw, 4rem);
            align-items: center;
        }

        .intro-split .intro-text p {
            margin-bottom: 1.25rem;
        }

        .intro-split .intro-text .text-weak {
            color: var(--text-weak);
        }

        .intro-split .intro-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            position: relative;
            aspect-ratio: 4 / 3;
            background: #eae6df;
        }

        .intro-split .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .intro-split .intro-media::after {
            content: "";
            position: absolute;
            inset: 0;
            border: 1px solid rgba(28, 28, 26, 0.05);
            border-radius: inherit;
            pointer-events: none;
        }

        /* ========== 内容方向卡片 ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .info-card {
            background: var(--white);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 2rem 1.875rem;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .info-card:hover {
            transform: translateY(-4px);
            border-color: var(--teal);
            box-shadow: var(--shadow-hover);
        }

        .info-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(47, 74, 74, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-title);
            font-size: 1.125rem;
            color: var(--teal);
            font-weight: 700;
            margin-bottom: 1.5rem;
        }

        .info-card h3 {
            margin-bottom: 0.75rem;
        }

        .info-card p {
            color: var(--text-weak);
            font-size: 0.875rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .info-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            margin-top: 1.25rem;
            font-size: 0.875rem;
            color: var(--teal);
            font-weight: 500;
            transition: gap var(--transition);
        }

        .info-card .card-link:hover {
            gap: 0.625rem;
        }

        /* 差异化卡片（第四张） */
        .info-card.diff {
            background: var(--teal);
            border-color: var(--teal);
        }

        .info-card.diff h3 {
            color: #fff;
        }

        .info-card.diff p {
            color: rgba(255, 255, 255, 0.82);
        }

        .info-card.diff .card-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .info-card.diff .card-link {
            color: #fff;
        }

        /* ========== 更新维护时间线 ========== */
        .timeline-wrap {
            background: var(--ink);
            border-radius: var(--radius-lg);
            padding: clamp(2rem, 4vw, 3.5rem);
            color: rgba(255, 255, 255, 0.82);
            position: relative;
            overflow: hidden;
        }

        .timeline-wrap::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--bronze) 0%, rgba(166, 124, 82, 0) 100%);
        }

        .timeline-wrap h2 {
            color: #fff;
            margin-bottom: 2.5rem;
        }

        .timeline-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .timeline-item {
            position: relative;
            padding-left: 1.5rem;
            border-left: 1px solid rgba(255, 255, 255, 0.2);
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -5px;
            top: 0.375rem;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--bronze);
            box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.25);
        }

        .timeline-item h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }

        .timeline-item p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }

        /* ========== 用户场景 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .scenario-item {
            background: rgba(247, 244, 239, 0.6);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            transition: all var(--transition);
        }

        .scenario-item:hover {
            border-color: var(--bronze);
            box-shadow: var(--shadow-sm);
            background: #fff;
        }

        .scenario-item .num {
            font-family: var(--font-title);
            font-size: 2rem;
            font-weight: 700;
            color: var(--bronze);
            display: block;
            margin-bottom: 1rem;
            line-height: 1;
        }

        .scenario-item h3 {
            font-size: 1.0625rem;
            margin-bottom: 0.625rem;
        }

        .scenario-item p {
            font-size: 0.875rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 860px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-line);
            transition: border-color var(--transition);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-line);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            padding: 1.375rem 0.25rem;
            background: none;
            text-align: left;
            transition: color var(--transition);
        }

        .faq-question h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            transition: color var(--transition);
            font-family: var(--font-title);
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--border-line);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--text-main);
            font-size: 1rem;
            transition: all var(--transition);
            font-style: normal;
        }

        .faq-question:hover h3 {
            color: var(--teal);
        }

        .faq-item.open .faq-question h3 {
            color: var(--teal);
        }

        .faq-item.open .faq-icon {
            background: var(--teal);
            color: #fff;
            border-color: var(--teal);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 2.5rem 0 0.25rem;
        }

        .faq-answer p {
            font-size: 0.9375rem;
            color: var(--text-weak);
            line-height: 1.8;
            padding-bottom: 1.375rem;
        }

        /* ========== CTA 横幅 ========== */
        .cta-banner {
            background: var(--teal);
            border-radius: var(--radius-lg);
            padding: clamp(2.5rem, 5vw, 4.5rem) clamp(2rem, 4vw, 4rem);
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::after {
            content: "";
            position: absolute;
            right: -40px;
            bottom: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(166, 124, 82, 0.15);
            pointer-events: none;
            /* 装饰圆 */
        }

        .cta-banner h2 {
            color: #fff;
            margin-bottom: 1rem;
            font-size: clamp(1.5rem, 3vw, 2.25rem);
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 2rem;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            font-size: 0.9375rem;
        }

        .cta-actions {
            display: flex;
            gap: 0.875rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--white);
            border-top: 1px solid var(--border-line);
            padding: 3.5rem 0 2rem;
            margin-top: auto;
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .footer-brand {
            max-width: 280px;
        }

        .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            margin-bottom: 1rem;
        }

        .footer-brand .brand-text span:last-child {
            font-family: var(--font-title);
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--ink);
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: var(--text-weak);
            line-height: 1.75;
        }

        .footer-nav {
            display: flex;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .footer-nav-col h4 {
            font-size: 0.8125rem;
            color: var(--ink);
            margin-bottom: 1rem;
            letter-spacing: 0.05em;
            font-family: var(--font-body);
            font-weight: 600;
        }

        .footer-nav-col a {
            display: block;
            font-size: 0.875rem;
            color: var(--text-weak);
            padding: 0.25rem 0;
            transition: color var(--transition), padding-left var(--transition);
        }

        .footer-nav-col a:hover {
            color: var(--teal);
            padding-left: 4px;
        }

        .footer-copy {
            margin-top: 2.5rem;
            padding-top: 1.75rem;
            border-top: 1px solid var(--border-line);
            display: flex;
            justify-content: space-between;
            gap: 1rem;
            font-size: 0.8125rem;
            color: var(--text-weak);
            flex-wrap: wrap;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb {
            font-size: 0.8125rem;
            color: var(--text-weak);
            padding: 1.25rem 0 0;
            max-width: 760px;
        }

        .breadcrumb a {
            color: var(--text-weak);
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            margin: 0 0.5rem;
            color: var(--border-line);
        }

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

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }

            .page-hero {
                padding-top: 3rem;
            }
        }

        @media (min-width: 1024px) {
            .mobile-header,
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 767px) {
            .cards-grid {
                grid-template-columns: 1fr;
            }

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

            .timeline-list {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .intro-split {
                grid-template-columns: 1fr;
            }

            .intro-split .intro-media {
                order: -1;
            }

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

            .footer-inner {
                flex-direction: column;
                gap: 2rem;
            }

            .footer-nav {
                gap: 1.5rem;
            }

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

            .faq-question h3 {
                font-size: 0.9375rem;
            }
        }

        @media (max-width: 520px) {
            .timeline-wrap {
                padding: 1.75rem;
            }

            .info-card {
                padding: 1.5rem;
            }

            .scenario-item {
                padding: 1.5rem;
            }

            .footer-copy {
                flex-direction: column;
                gap: 0.375rem;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scenario-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

/* roulang page: category1 */
:root {
            --ink: #1C1C1A;
            --paper: #F7F4EF;
            --white: #FFFFFF;
            --qing: #2F4A4A;
            --bronze: #A67C52;
            --text: #3D3D3A;
            --text-light: #8A8782;
            --border: #E6E1D8;
            --radius: 6px;
            --radius-lg: 12px;
            --shadow: 0 1px 3px rgba(28,28,26,0.04), 0 8px 24px rgba(28,28,26,0.06);
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --nav-width: 232px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 0.9375rem;
            line-height: 1.75;
            color: var(--text);
            background: var(--paper);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }

        .bg-ink {
            background-color: var(--ink);
        }
        .text-paper {
            color: var(--paper);
        }
        .text-bronze {
            color: var(--bronze);
        }
        .bg-bronze {
            background-color: var(--bronze);
        }
        .bg-qing {
            background-color: var(--qing);
        }
        .text-qing {
            color: var(--qing);
        }
        .bg-paper {
            background-color: var(--paper);
        }
        .bg-white {
            background-color: var(--white);
        }
        .text-body {
            color: var(--text);
        }
        .text-muted {
            color: var(--text-light);
        }
        .border-line {
            border-color: var(--border);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: clamp(1.5rem, 5vw, 4rem);
            padding-right: clamp(1.5rem, 5vw, 4rem);
        }

        .section {
            padding: 5rem 0;
        }

        .section-head {
            margin-bottom: 3rem;
        }

        .section-mark {
            display: block;
            width: 32px;
            height: 2px;
            background: var(--bronze);
            margin-bottom: 1rem;
        }

        .section-head h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.5vw, 2.25rem);
            line-height: 1.25;
            letter-spacing: 0.01em;
            color: var(--ink);
            margin-bottom: 0.75rem;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 0.9375rem;
            max-width: 520px;
        }

        .app-shell {
            min-height: 100vh;
            display: flex;
            background: var(--paper);
        }

        /* ===== 左侧竖向导航 ===== */
        .sidebar {
            width: var(--nav-width);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: var(--white);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 2rem 1.25rem 1.5rem;
            z-index: 50;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 2.5rem;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--ink);
            color: var(--paper);
            font-family: var(--font-serif);
            font-size: 1.25rem;
            border-radius: var(--radius);
            flex-shrink: 0;
        }

        .brand-name {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }

        .sidebar-nav .nav-item {
            display: block;
            padding: 0.75rem 1rem;
            font-size: 0.9375rem;
            color: var(--text);
            border-left: 3px solid transparent;
            transition: border-color 0.2s ease-out, color 0.2s ease-out, background 0.2s ease-out;
            border-radius: 0 4px 4px 0;
        }

        .sidebar-nav .nav-item:hover {
            color: var(--qing);
            border-left-color: var(--bronze);
            background: rgba(47, 74, 74, 0.04);
        }

        .sidebar-nav .nav-item.active {
            color: var(--qing);
            border-left-color: var(--bronze);
            background: rgba(47, 74, 74, 0.06);
            font-weight: 500;
        }

        .sidebar-foot {
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }

        .sidebar-foot .side-contact {
            display: inline-block;
            font-size: 0.8125rem;
            color: var(--qing);
            margin-bottom: 0.5rem;
            transition: color 0.2s ease-out;
        }

        .sidebar-foot .side-contact:hover {
            color: var(--bronze);
        }

        .sidebar-foot .side-copy {
            display: block;
            font-size: 0.75rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 内容区 ===== */
        .main-area {
            flex: 1;
            margin-left: var(--nav-width);
            min-width: 0;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            height: 64px;
            align-items: center;
            justify-content: space-between;
            padding: 0 1.25rem;
            background: var(--paper);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 45;
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 0.625rem;
        }

        .mobile-brand .brand-mark {
            width: 36px;
            height: 36px;
            font-size: 1.0625rem;
        }

        .mobile-brand .brand-name {
            font-size: 1rem;
        }

        .menu-toggle {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: flex-end;
        }

        .menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--ink);
            transition: transform 0.25s ease-out, opacity 0.25s ease-out;
        }

        .menu-toggle span:nth-child(2) {
            width: 16px;
        }

        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: sticky;
            top: 64px;
            z-index: 44;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            flex-direction: column;
            padding: 1rem 1.25rem;
            gap: 0.25rem;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-item {
            padding: 0.75rem 0.875rem;
            font-size: 0.9375rem;
            color: var(--text);
            border-left: 3px solid transparent;
            transition: border-color 0.2s ease-out, color 0.2s ease-out, background 0.2s ease-out;
        }

        .mobile-menu .nav-item:hover,
        .mobile-menu .nav-item.active {
            color: var(--qing);
            border-left-color: var(--bronze);
            background: rgba(47, 74, 74, 0.05);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            height: 48px;
            padding: 0 1.75rem;
            font-size: 0.9375rem;
            font-weight: 500;
            border-radius: var(--radius);
            cursor: pointer;
            transition: background 0.2s ease-out, color 0.2s ease-out, border-color 0.2s ease-out, transform 0.2s ease-out, box-shadow 0.2s ease-out;
            border: 1px solid transparent;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--qing);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(47, 74, 74, 0.2);
        }

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

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

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

        .btn-bronze {
            background: var(--bronze);
            color: var(--white);
        }

        .btn-bronze:hover {
            background: #b88d60;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(166, 124, 82, 0.25);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--paper);
            border-color: rgba(247, 244, 239, 0.6);
        }

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

        .btn-block {
            width: 100%;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 5.5rem 0 6rem;
            overflow: hidden;
            background: var(--paper);
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--paper);
            opacity: 0.88;
            z-index: 0;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            font-size: 0.8125rem;
            color: var(--qing);
            letter-spacing: 0.08em;
            margin-bottom: 1.25rem;
        }

        .hero-eyebrow::before {
            content: '';
            width: 28px;
            height: 1px;
            background: var(--bronze);
        }

        .hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 4vw, 3.25rem);
            line-height: 1.25;
            letter-spacing: 0.01em;
            color: var(--ink);
            margin-bottom: 1.25rem;
        }

        .hero-sub {
            max-width: 560px;
            font-size: 1rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 2.25rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        /* ===== 图文简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .intro-image img {
            aspect-ratio: 4 / 3;
            object-fit: cover;
            width: 100%;
        }

        .intro-content h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.5vw, 2.125rem);
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 1.125rem;
        }

        .intro-content p {
            color: var(--text);
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            color: var(--qing);
            font-size: 0.875rem;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease-out, color 0.2s ease-out;
        }

        .text-link:hover {
            color: var(--bronze);
            border-bottom-color: var(--bronze);
        }

        .text-link::after {
            content: '→';
            font-size: 0.75rem;
        }

        /* ===== 资讯覆盖方向 ===== */
        .coverage-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .coverage-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, border-color 0.2s ease-out;
        }

        .coverage-card:hover {
            transform: translateY(-4px);
            border-color: var(--qing);
            box-shadow: var(--shadow);
        }

        .coverage-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }

        .coverage-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease-out;
        }

        .coverage-card:hover .coverage-img img {
            transform: scale(1.03);
        }

        .coverage-body {
            padding: 1.5rem 1.5rem 1.75rem;
        }

        .coverage-body h3 {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            color: var(--ink);
            margin-bottom: 0.625rem;
        }

        .coverage-body p {
            font-size: 0.875rem;
            color: var(--text);
            margin-bottom: 1rem;
            line-height: 1.75;
        }

        .coverage-link {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            font-size: 0.8125rem;
            color: var(--qing);
            transition: color 0.2s ease-out;
        }

        .coverage-link:hover {
            color: var(--bronze);
        }

        .coverage-link::after {
            content: '→';
            font-size: 0.75rem;
        }

        .coverage-card-special {
            background: var(--qing);
            border-color: var(--qing);
            display: flex;
            align-items: stretch;
        }

        .coverage-card-special:hover {
            border-color: var(--qing);
            background: #263b3b;
        }

        .coverage-special-content {
            padding: 2rem 1.75rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
            color: var(--paper);
        }

        .coverage-tag {
            display: inline-flex;
            align-self: flex-start;
            padding: 0.25rem 0.625rem;
            font-size: 0.75rem;
            color: var(--paper);
            background: rgba(255, 255, 255, 0.12);
            border-radius: 3px;
            margin-bottom: 0.875rem;
        }

        .coverage-special-content h3 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            color: var(--paper);
            margin-bottom: 0.625rem;
        }

        .coverage-special-content p {
            font-size: 0.875rem;
            line-height: 1.75;
            color: rgba(247, 244, 239, 0.85);
            margin-bottom: 1.25rem;
        }

        .coverage-special-content .coverage-link {
            color: var(--paper);
        }

        .coverage-special-content .coverage-link:hover {
            color: #e0d7c9;
        }

        /* ===== 信息发布流程 ===== */
        .process-list {
            max-width: 720px;
            margin: 0 auto;
        }

        .process-item {
            display: flex;
            gap: 1.5rem;
            padding: 2rem 0;
            border-bottom: 1px solid var(--border);
        }

        .process-item:last-child {
            border-bottom: none;
        }

        .process-num {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            color: var(--bronze);
            line-height: 1.4;
            min-width: 48px;
            letter-spacing: 0.02em;
        }

        .process-item h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            color: var(--ink);
            margin-bottom: 0.5rem;
        }

        .process-item p {
            color: var(--text);
            font-size: 0.875rem;
            line-height: 1.75;
            max-width: 520px;
        }

        /* ===== 数据指标 ===== */
        .stats {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 4rem 0;
        }

        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }

        .stat-item {
            text-align: center;
            padding: 0.5rem 1rem;
            position: relative;
        }

        .stat-item::before {
            content: '';
            position: absolute;
            top: -1rem;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 1px;
            background: var(--bronze);
        }

        .stat-num {
            display: block;
            font-family: var(--font-serif);
            font-size: clamp(1.875rem, 3vw, 2.5rem);
            color: var(--bronze);
            line-height: 1.2;
            margin-bottom: 0.375rem;
        }

        .stat-label {
            font-size: 0.8125rem;
            color: var(--text-light);
        }

        /* ===== CTA横幅 ===== */
        .cta-band {
            background: var(--qing);
            padding: 4.5rem 0;
            text-align: center;
        }

        .cta-band h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.5vw, 2.125rem);
            color: var(--paper);
            margin-bottom: 0.75rem;
        }

        .cta-band p {
            color: rgba(247, 244, 239, 0.8);
            margin-bottom: 2rem;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            padding: 1.375rem 0.25rem;
            cursor: pointer;
            text-align: left;
            color: var(--ink);
            font-size: 0.9375rem;
            font-weight: 500;
            transition: color 0.2s ease-out;
        }

        .faq-question:hover {
            color: var(--qing);
        }

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

        .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            font-size: 1rem;
            font-weight: 400;
            color: var(--bronze);
            border: 1px solid var(--border);
            border-radius: 50%;
            transition: transform 0.25s ease-out, border-color 0.2s ease-out;
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--bronze);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            padding: 0 2rem 0 1.25rem;
            color: var(--text);
            font-size: 0.875rem;
            line-height: 1.75;
        }

        .faq-item.active .faq-answer {
            max-height: 320px;
            padding: 0 2rem 1.375rem 1.25rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--ink);
            color: rgba(247, 244, 239, 0.75);
            padding: 4rem 0 2rem;
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            gap: 3rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }

        .footer-brand {
            max-width: 340px;
        }

        .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            margin-bottom: 1rem;
        }

        .footer-brand .brand-mark {
            background: var(--paper);
            color: var(--ink);
        }

        .footer-brand .brand-text span:not(.brand-mark) {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            color: var(--paper);
        }

        .footer-brand p {
            font-size: 0.8125rem;
            line-height: 1.75;
            color: rgba(247, 244, 239, 0.55);
        }

        .footer-nav {
            display: flex;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .footer-nav-col h4 {
            font-size: 0.8125rem;
            color: var(--paper);
            margin-bottom: 0.875rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .footer-nav-col a {
            display: block;
            font-size: 0.8125rem;
            color: rgba(247, 244, 239, 0.6);
            margin-bottom: 0.5rem;
            transition: color 0.2s ease-out;
        }

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

        .footer-copy {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(247, 244, 239, 0.1);
            font-size: 0.75rem;
            color: rgba(247, 244, 239, 0.4);
        }

        /* ===== 表单弹层 ===== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(28, 28, 26, 0.5);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 200;
            padding: 1.5rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease-out, visibility 0.3s ease-out;
        }

        .modal-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .modal-panel {
            background: var(--white);
            border-radius: var(--radius-lg);
            width: 100%;
            max-width: 480px;
            padding: 2.5rem 2rem 2rem;
            position: relative;
            transform: scale(0.96);
            transition: transform 0.25s ease-out;
            box-shadow: 0 16px 48px rgba(28, 28, 26, 0.16);
        }

        .modal-overlay.open .modal-panel {
            transform: scale(1);
        }

        .modal-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--text-light);
            cursor: pointer;
            border-radius: 50%;
            transition: color 0.2s ease-out, background 0.2s ease-out;
        }

        .modal-close:hover {
            color: var(--ink);
            background: rgba(28, 28, 26, 0.05);
        }

        .modal-panel h2 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            color: var(--ink);
            margin-bottom: 0.5rem;
        }

        .modal-sub {
            font-size: 0.875rem;
            color: var(--text-light);
            margin-bottom: 1.5rem;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        .form-group label {
            display: block;
            font-size: 0.8125rem;
            color: var(--text);
            margin-bottom: 0.375rem;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            height: 44px;
            padding: 0 0.875rem;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--white);
            color: var(--text);
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
        }

        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--bronze);
            box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.12);
        }

        .form-group input::placeholder {
            color: rgba(138, 135, 130, 0.7);
        }

        .modal-form .btn {
            margin-top: 0.5rem;
        }

        .privacy-note {
            margin-top: 1rem;
            font-size: 0.75rem;
            color: var(--text-light);
            line-height: 1.6;
            text-align: center;
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--bronze);
            outline-offset: 2px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }

            .main-area {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .hero {
                padding: 3.5rem 0 4rem;
            }

            .section {
                padding: 3.5rem 0;
            }
        }

        @media (max-width: 767px) {
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .coverage-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 2rem 1rem;
            }

            .stats {
                padding: 3rem 0;
            }

            .process-item {
                flex-direction: column;
                gap: 0.5rem;
                padding: 1.5rem 0;
            }

            .process-num {
                font-size: 1.25rem;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .footer-inner {
                flex-direction: column;
                gap: 2rem;
            }

            .footer-nav {
                flex-direction: column;
                gap: 1.5rem;
            }

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

        @media (max-width: 520px) {
            .section {
                padding: 2.75rem 0;
            }

            .hero {
                padding: 2.75rem 0 3.25rem;
            }

            .hero h1 {
                font-size: 2rem;
            }

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

            .stat-item::before {
                display: none;
            }

            .container {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }

            .modal-panel {
                padding: 2rem 1.25rem 1.5rem;
            }
        }

/* roulang page: category2 */
:root {
            --ink: #1C1C1A;
            --paper: #F7F4EF;
            --white: #FFFFFF;
            --teal: #2F4A4A;
            --bronze: #A67C52;
            --body: #3D3D3A;
            --muted: #8A8782;
            --line: #E6E1D8;
            --radius: 6px;
            --radius-lg: 12px;
            --shadow: 0 1px 3px rgba(28, 28, 26, 0.04), 0 8px 24px rgba(28, 28, 26, 0.06);
            --sidebar-w: 232px;
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--paper);
            color: var(--body);
            line-height: 1.75;
            font-size: 0.9375rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.24s ease-out, border-color 0.24s ease-out;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input,
        select {
            font-family: inherit;
            font-size: 0.9375rem;
        }

        .site-layout {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: clamp(1.5rem, 5vw, 4rem);
            padding-right: clamp(1.5rem, 5vw, 4rem);
            width: 100%;
        }

        /* ===== 左侧导航（桌面） ===== */
        .sidebar {
            width: var(--sidebar-w);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: var(--paper);
            border-right: 1px solid var(--line);
            display: flex;
            flex-direction: column;
            z-index: 50;
        }
        .sidebar-brand {
            padding: 2rem 1.5rem 1.5rem;
        }
        .brand-link {
            display: inline-flex;
            align-items: center;
            gap: 0.65rem;
        }
        .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 6px;
            background: var(--ink);
            color: #fff;
            font-family: var(--font-serif);
            font-size: 1.125rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
        }
        .brand-name {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--ink);
            letter-spacing: 0.02em;
        }
        .sidebar-nav {
            padding: 1.5rem 1rem;
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
            flex: 1;
        }
        .nav-item {
            display: block;
            padding: 0.7rem 1rem;
            border-left: 3px solid transparent;
            font-size: 0.9375rem;
            color: var(--muted);
            border-radius: 0 4px 4px 0;
            transition: all 0.2s ease-out;
            position: relative;
        }
        .nav-item:hover {
            color: var(--teal);
            border-left-color: var(--bronze);
            background: rgba(255, 255, 255, 0.6);
        }
        .nav-item.active {
            color: var(--ink);
            font-weight: 600;
            border-left-color: var(--bronze);
            background: var(--white);
        }
        .sidebar-foot {
            padding: 1.5rem;
            border-top: 1px solid var(--line);
            font-size: 0.75rem;
            color: var(--muted);
            line-height: 1.6;
        }

        /* ===== 主内容区 ===== */
        .main-area {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }
        .main-area main {
            flex: 1;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            height: 64px;
            background: var(--paper);
            border-bottom: 1px solid var(--line);
            padding: 0 1.25rem;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 60;
        }
        .menu-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .menu-toggle:hover {
            background: rgba(28, 28, 26, 0.05);
        }
        .menu-toggle span {
            width: 20px;
            height: 2px;
            background: var(--ink);
            transition: transform 0.24s ease-out, opacity 0.24s;
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--white);
            border-bottom: 1px solid var(--line);
            box-shadow: var(--shadow);
            padding: 1rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
            z-index: 55;
            transform: translateY(-100%);
            opacity: 0;
            pointer-events: none;
            transition: transform 0.24s ease-out, opacity 0.2s;
        }
        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu .nav-item {
            border-left: none;
            padding: 0.7rem 0.5rem;
            border-bottom: 1px solid rgba(230, 225, 216, 0.6);
            border-radius: 0;
        }
        .mobile-menu .nav-item.active {
            color: var(--teal);
            font-weight: 600;
            background: transparent;
        }

        /* ===== 区块通用 ===== */
        .section {
            padding: 5rem 0;
        }
        .section-paper {
            background: var(--white);
        }
        .section-head {
            margin-bottom: 3rem;
            max-width: 680px;
        }
        .section-head h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.5vw, 2.25rem);
            color: var(--ink);
            line-height: 1.25;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }
        .section-head p {
            color: var(--muted);
            font-size: 0.9375rem;
            line-height: 1.75;
        }
        .section-dash {
            display: block;
            width: 36px;
            height: 3px;
            background: var(--bronze);
            margin-bottom: 1rem;
            border-radius: 2px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: clamp(4rem, 8vw, 7rem) 0;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
            border-bottom: 1px solid var(--line);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(247, 244, 239, 0.9);
        }
        .hero-content {
            position: relative;
            z-index: 1;
        }
        .hero-eyebrow {
            display: inline-block;
            font-size: 0.8125rem;
            letter-spacing: 0.08em;
            color: var(--teal);
            border: 1px solid rgba(47, 74, 74, 0.25);
            padding: 0.35rem 0.9rem;
            border-radius: 3px;
            margin-bottom: 1.5rem;
            background: rgba(255, 255, 255, 0.5);
        }
        .hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 4vw, 3.25rem);
            color: var(--ink);
            line-height: 1.2;
            letter-spacing: 0.01em;
            margin-bottom: 1.25rem;
            animation: fadeUp 0.5s ease-out;
        }
        .hero-sub {
            font-size: 1.0625rem;
            color: var(--body);
            max-width: 560px;
            line-height: 1.9;
            margin-bottom: 2rem;
            animation: fadeUp 0.5s ease-out 0.08s backwards;
        }
        .hero-actions {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            animation: fadeUp 0.5s ease-out 0.16s backwards;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 1.75rem;
            border-radius: 6px;
            font-size: 0.9375rem;
            font-weight: 500;
            border: 1px solid transparent;
            transition: all 0.2s ease-out;
            white-space: nowrap;
            gap: 0.4rem;
        }
        .btn-primary {
            background: var(--ink);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--teal);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(47, 74, 74, 0.18);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--ink);
            color: var(--ink);
        }
        .btn-outline:hover {
            border-color: var(--teal);
            color: var(--teal);
        }
        .btn-light {
            background: #fff;
            color: var(--ink);
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, 0.85);
            transform: translateY(-1px);
        }
        .btn-bronze {
            background: var(--bronze);
            color: #fff;
        }
        .btn-bronze:hover {
            background: #b8895d;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(166, 124, 82, 0.25);
        }
        .btn-ghost-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }
        .btn-ghost-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .btn-block {
            width: 100%;
        }
        .btn:focus-visible,
        .nav-item:focus-visible,
        .menu-toggle:focus-visible,
        .faq-question:focus-visible {
            outline: 2px solid var(--bronze);
            outline-offset: 2px;
        }

        /* ===== 服务概览 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }
        .service-card {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: 6px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.24s ease-out, border-color 0.24s, box-shadow 0.24s;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: var(--teal);
            box-shadow: 0 12px 32px rgba(28, 28, 26, 0.08);
        }
        .card-cover {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--line);
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease-out;
        }
        .service-card:hover .card-cover img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 1.75rem 1.75rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            color: var(--ink);
            margin-bottom: 0.6rem;
        }
        .card-body p {
            color: var(--muted);
            font-size: 0.9375rem;
            line-height: 1.75;
            flex: 1;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            margin-top: 1.25rem;
            color: var(--teal);
            font-size: 0.9375rem;
            font-weight: 500;
            border-bottom: 1px solid transparent;
            width: max-content;
        }
        .card-link:hover {
            border-bottom-color: var(--teal);
        }
        .service-card-emphasis {
            background: var(--teal);
            border-color: var(--teal);
            box-shadow: 0 12px 32px rgba(47, 74, 74, 0.16);
        }
        .service-card-emphasis .card-body {
            justify-content: center;
        }
        .service-card-emphasis h3 {
            color: #fff;
        }
        .service-card-emphasis p {
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 1.5rem;
        }

        /* ===== 流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2.5rem 1.5rem;
        }
        .process-step {
            position: relative;
            padding-top: 0.5rem;
        }
        .step-num {
            font-family: var(--font-serif);
            font-size: 2rem;
            color: var(--bronze);
            font-weight: 600;
            display: block;
            margin-bottom: 1rem;
            line-height: 1;
        }
        .process-step h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            color: var(--ink);
            margin-bottom: 0.5rem;
        }
        .process-step p {
            font-size: 0.875rem;
            color: var(--muted);
            line-height: 1.7;
        }
        .process-step::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--bronze);
            border-radius: 1px;
        }

        /* ===== 数据指标 ===== */
        .stats-bar {
            border-top: 2px solid var(--line);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            padding-top: 3rem;
            padding-bottom: 1rem;
        }
        .stat-item {
            text-align: left;
        }
        .stat-num {
            font-family: var(--font-serif);
            font-size: clamp(2.25rem, 4vw, 3.25rem);
            font-weight: 600;
            color: var(--bronze);
            line-height: 1.1;
            display: block;
            margin-bottom: 0.5rem;
        }
        .stat-label {
            font-size: 0.875rem;
            color: var(--muted);
        }

        /* ===== 信息组织方式 ===== */
        .info-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        .info-image {
            aspect-ratio: 4 / 3;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--line);
        }
        .info-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .info-content h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.5vw, 2.25rem);
            color: var(--ink);
            margin-bottom: 1rem;
            line-height: 1.25;
        }
        .info-content p {
            color: var(--body);
            margin-bottom: 1.5rem;
            line-height: 1.85;
        }
        .info-list {
            list-style: none;
        }
        .info-list li {
            padding-left: 1.4rem;
            position: relative;
            color: var(--body);
            font-size: 0.9375rem;
            margin-bottom: 0.6rem;
        }
        .info-list li::before {
            content: '—';
            position: absolute;
            left: 0;
            color: var(--bronze);
            font-weight: 600;
        }

        /* ===== 适用场景 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2.5rem 3rem;
        }
        .scene-item {
            padding: 1.5rem 0;
            border-top: 1px solid var(--line);
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }
        .scene-icon {
            font-size: 1.25rem;
            color: var(--teal);
            line-height: 1.5;
            flex-shrink: 0;
        }
        .scene-item h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            color: var(--ink);
            margin-bottom: 0.35rem;
        }
        .scene-item p {
            color: var(--muted);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
        }
        .faq-item {
            border-bottom: 1px solid var(--line);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--line);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.5rem 0.25rem;
            font-family: var(--font-serif);
            font-size: 1.1875rem;
            font-weight: 500;
            color: var(--ink);
            text-align: left;
            transition: color 0.2s;
        }
        .faq-question:hover {
            color: var(--teal);
        }
        .faq-icon {
            font-size: 1.5rem;
            line-height: 1;
            color: var(--bronze);
            font-weight: 400;
            transition: transform 0.3s ease-out;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .faq-answer p {
            padding: 0 0.25rem 1.5rem;
            color: var(--muted);
            font-size: 0.9375rem;
            line-height: 1.85;
            max-width: 92%;
        }

        /* ===== CTA ===== */
        .cta-banner {
            background: var(--teal);
            padding: 4.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 20%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-inner h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            color: #fff;
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1rem;
            max-width: 520px;
            margin: 0 auto 2rem;
        }
        .cta-actions {
            display: flex;
            gap: 0.75rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--ink);
            color: rgba(255, 255, 255, 0.65);
            padding: 3.5rem 0 2rem;
            font-size: 0.875rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            color: #fff;
            font-family: var(--font-serif);
            font-size: 1.125rem;
            margin-bottom: 1rem;
        }
        .footer-brand .brand-mark {
            background: var(--bronze);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.875rem;
            line-height: 1.8;
            max-width: 380px;
        }
        .footer-nav {
            display: flex;
            gap: 3rem;
            justify-content: flex-end;
        }
        .footer-nav-col h4 {
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.8125rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 1.25rem;
            font-weight: 600;
        }
        .footer-nav-col a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.875rem;
            margin-bottom: 0.75rem;
            transition: color 0.2s;
        }
        .footer-nav-col a:hover {
            color: var(--bronze);
        }
        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            gap: 1rem;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 表单弹层 ===== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(28, 28, 26, 0.55);
            backdrop-filter: blur(2px);
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.24s ease-out, visibility 0.24s;
        }
        .modal-overlay.show {
            opacity: 1;
            visibility: visible;
        }
        .modal-box {
            background: var(--white);
            width: 100%;
            max-width: 520px;
            border-radius: 12px;
            padding: 2.5rem 2.5rem 2rem;
            box-shadow: 0 24px 64px rgba(28, 28, 26, 0.18);
            position: relative;
            transform: scale(0.96);
            transition: transform 0.24s ease-out;
            max-height: 90vh;
            overflow-y: auto;
        }
        .modal-overlay.show .modal-box {
            transform: scale(1);
        }
        .modal-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 32px;
            height: 32px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--muted);
            transition: all 0.2s;
            line-height: 1;
        }
        .modal-close:hover {
            background: rgba(28, 28, 26, 0.06);
            color: var(--ink);
        }
        .modal-box h2 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            color: var(--ink);
            margin-bottom: 0.5rem;
        }
        .modal-desc {
            color: var(--muted);
            font-size: 0.875rem;
            margin-bottom: 1.75rem;
        }
        .form-group {
            margin-bottom: 1.25rem;
        }
        .form-group label {
            display: block;
            font-size: 0.8125rem;
            color: var(--body);
            font-weight: 500;
            margin-bottom: 0.4rem;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            height: 46px;
            border: 1px solid var(--line);
            border-radius: 6px;
            padding: 0 0.9rem;
            background: #fff;
            color: var(--ink);
            transition: border-color 0.2s, box-shadow 0.2s;
            font-size: 0.9375rem;
        }
        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--bronze);
            box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.12);
        }
        .form-group input::placeholder {
            color: #bbb;
        }
        .privacy-note {
            margin-top: 1.25rem;
            font-size: 0.75rem;
            color: var(--muted);
            text-align: center;
            line-height: 1.6;
        }
        .form-success {
            text-align: center;
            padding: 1.5rem 0 0.5rem;
        }
        .form-success h2 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            color: var(--ink);
            margin-bottom: 0.75rem;
        }
        .form-success p {
            color: var(--muted);
            font-size: 0.9375rem;
            margin-bottom: 1.75rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }
            .main-area {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .section {
                padding: 3.5rem 0;
            }
        }
        @media (max-width: 767px) {
            .service-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem 1.25rem;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 2rem 1rem;
            }
            .info-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .scenes-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .footer-nav {
                justify-content: flex-start;
                gap: 2rem;
                flex-wrap: wrap;
            }
            .cta-banner {
                padding: 3.5rem 0;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .modal-box {
                padding: 2rem 1.5rem 1.5rem;
            }
        }
        @media (max-width: 519px) {
            .process-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem 0.75rem;
            }
            .stat-num {
                font-size: 2rem;
            }
            .footer-copy {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }
        }