/* roulang page: index */
:root {
  --primary: #1F5147;
  --primary-dark: #163A33;
  --gold: #B9926A;
  --gold-light: #D9C3A5;
  --bg: #F6F4EE;
  --card-bg: #FFFFFF;
  --text: #26241F;
  --text-secondary: #6E6A61;
  --border: #E4DFD3;
  --error: #B23B2E;
  --success: #2E7D5B;
  --warning: #E5A93D;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(31,81,71,.08);
  --shadow-hover: 0 8px 24px rgba(31,81,71,.12);
  --transition: 0.2s;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

ul,
ol {
  list-style: none;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition) ease, color var(--transition) ease, border-color var(--transition) ease, box-shadow var(--transition) ease;
  text-align: center;
  line-height: 1.4;
}

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

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

.btn-primary:active {
  background: var(--primary-dark);
}

.btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(31, 81, 71, .3);
}

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

.btn-outline:hover {
  background: rgba(31, 81, 71, .08);
}

.btn-outline:active {
  background: rgba(31, 81, 71, .14);
}

.btn-outline:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(31, 81, 71, .2);
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.4;
  color: var(--text);
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}

.section-head h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
}

.section-head p {
  color: var(--text-secondary);
  margin-top: 12px;
  font-size: 16px;
}

.section-head.align-left {
  text-align: left;
}

.section-head.align-left h2::after {
  left: 0;
  transform: none;
}

.badge {
  display: inline-block;
  background: rgba(185, 146, 106, .15);
  color: var(--gold);
  font-size: 12px;
  border-radius: 999px;
  padding: 2px 12px;
  line-height: 1.6;
}

.badge-outline {
  display: inline-block;
  border: 1px solid rgba(31, 81, 71, .3);
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 14px;
  font-size: 12px;
  line-height: 1.6;
}

.text-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  position: relative;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition) ease;
}

.text-link:hover::after {
  transform: scaleX(1);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .4);
  box-shadow: 0 4px 24px rgba(0, 0, 0, .06);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.site-header.scrolled {
  background: rgba(246, 244, 238, .96);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

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

.main-nav a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 2px;
  white-space: nowrap;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width var(--transition) ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a.active {
  color: var(--gold);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-search input {
  width: 170px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, .7);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition) ease, box-shadow var(--transition) ease;
}

.header-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 81, 71, .1);
}

.nav-cta {
  padding: 10px 22px;
  font-size: 14px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}

/* Hero */
.hero {
  min-height: min(760px, 92vh);
  display: flex;
  align-items: center;
  padding: 120px 0 72px;
  background: linear-gradient(135deg, #F6F4EE 0%, #EAF0EC 100%);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 5fr 2fr 5fr;
  gap: 40px;
  align-items: center;
  width: 100%;
}

.hero-text {
  grid-column: 1;
}

.hero-media {
  grid-column: 3;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.3;
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.hero h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72px;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 2px;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-trust {
  display: flex;
  gap: 28px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.hero-trust span {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  position: relative;
  padding-left: 18px;
}

.hero-trust span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

.hero-media img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(31, 81, 71, .15);
  object-fit: cover;
}

/* Stats */
.stats-bar {
  background: var(--primary-dark);
  padding: 56px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 44px;
  color: var(--gold);
  line-height: 1.3;
  font-weight: 700;
}

.stat-label {
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
  margin-top: 8px;
}

/* Services */
.services {
  padding: 80px 0;
}

.services-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.services-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.services-row.row-offset {
  margin-left: 40px;
}

.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition) ease, border-color var(--transition) ease, transform var(--transition) ease;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}

.service-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(31, 81, 71, .4);
}

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

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(31, 81, 71, .1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

/* Process */
.process {
  padding: 80px 0;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}

.process-step {
  text-align: center;
  padding: 16px;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
}

.process-step h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  margin-bottom: 6px;
}

.process-step p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  max-width: 200px;
  margin: 0 auto;
}

.process-arrow {
  position: relative;
  width: 44px;
  height: 2px;
  background: var(--gold);
  display: block;
}

.process-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -5px;
  border-left: 8px solid var(--gold);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

/* Cases */
.cases {
  padding: 80px 0;
}

.case-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 72px;
}

.case-row:last-child {
  margin-bottom: 0;
}

.case-row.reverse .case-media {
  order: 2;
}

.case-media img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
  object-fit: cover;
  border: 1px solid var(--border);
}

.case-content h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1.5;
  margin: 14px 0 12px;
  color: var(--text);
}

.case-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
}

.case-metrics {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.case-metrics span {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 16px;
  line-height: 1.6;
}

/* Latest */
.latest {
  padding: 80px 0;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.latest-grid {
  display: grid;
  grid-template-columns: 6fr 6fr;
  gap: 32px;
  align-items: start;
}

.latest-feature {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition) ease, border-color var(--transition) ease, background var(--transition) ease;
}

.latest-feature:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(31, 81, 71, .4);
  background: rgba(31, 81, 71, .02);
}

.feature-thumb img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.feature-body {
  padding: 24px;
}

.feature-body h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  margin-top: 12px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feature-body p {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-time {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 12px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition) ease;
}

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

.list-item:hover {
  background: rgba(31, 81, 71, .04);
}

.list-date {
  font-family: var(--font-serif);
  color: var(--gold);
  font-weight: 700;
  font-size: 16px;
  min-width: 64px;
  white-space: nowrap;
}

.list-title {
  color: var(--text);
  font-weight: 500;
  flex: 1;
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.list-cat {
  font-size: 12px;
  color: var(--primary);
  border: 1px solid rgba(31, 81, 71, .3);
  border-radius: 999px;
  padding: 2px 12px;
  white-space: nowrap;
  line-height: 1.6;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 15px;
}

/* FAQ */
.faq {
  padding: 80px 0;
}

.faq-list {
  border-top: 1px solid var(--border);
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  position: relative;
  transition: background var(--transition) ease;
}

.faq-item.open {
  background: rgba(31, 81, 71, .02);
}

.faq-question {
  margin: 0;
}

.faq-question button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 8px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.6;
}

.faq-q {
  color: var(--gold);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}

.faq-text {
  flex: 1;
}

.faq-icon {
  font-size: 24px;
  color: var(--gold);
  transition: transform .2s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  display: none;
  padding: 0 8px 24px 52px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
}

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

/* Contact */
.contact {
  padding: 80px 0;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 64px;
  align-items: start;
}

.contact-form-wrap .section-head {
  margin-bottom: 32px;
}

.contact-form .form-group {
  margin-bottom: 22px;
}

.contact-form label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition) ease, box-shadow var(--transition) ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 81, 71, .1);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form select {
  cursor: pointer;
}

.form-note {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 14px;
}

.form-success {
  display: none;
  margin-top: 16px;
  padding: 10px 16px;
  background: rgba(46, 125, 91, .1);
  color: var(--success);
  border: 1px solid rgba(46, 125, 91, .3);
  border-radius: var(--radius);
  font-size: 14px;
}

.contact-info {
  background: var(--bg);
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.contact-info h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 18px;
  color: var(--text);
}

.contact-info p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
}

.contact-info p strong {
  color: var(--text);
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .75);
}

.footer-grid {
  display: grid;
  grid-template-columns: 4fr 2fr 3fr 3fr;
  gap: 48px;
  padding: 64px 0 48px;
}

.footer-brand .footer-logo {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .6);
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  font-family: var(--font-serif);
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col a {
  color: rgba(255, 255, 255, .65);
  font-size: 14px;
  transition: color var(--transition) ease;
}

.footer-col a:hover {
  color: #fff;
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  background: rgba(0, 0, 0, .12);
  padding: 20px 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}

/* Responsive */
@media (max-width: 1280px) {
  .container {
    max-width: 100%;
  }
}

@media (max-width: 1024px) {
  .main-nav {
    gap: 20px;
  }

  .main-nav a {
    font-size: 14px;
  }

  .header-search input {
    width: 130px;
  }

  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .hero-text {
    grid-column: 1;
  }

  .hero-media {
    grid-column: 2;
  }

  .case-row {
    gap: 40px;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: 68px;
  }

  .logo {
    font-size: 18px;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, .98);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 20px 24px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, .1);
    display: none;
    border-top: 1px solid var(--border);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 4px;
    font-size: 17px;
    border-bottom: 1px solid rgba(228, 223, 211, .6);
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .main-nav a::after {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  .header-search {
    display: none;
  }

  .nav-cta {
    padding: 8px 16px;
    font-size: 13px;
    white-space: nowrap;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 110px 0 56px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-text,
  .hero-media {
    grid-column: auto;
  }

  .hero-media {
    order: 2;
  }

  .hero h1 {
    font-size: 34px;
  }

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

  .stat-num {
    font-size: 32px;
  }

  .services,
  .process,
  .cases,
  .latest,
  .faq,
  .contact {
    padding: 56px 0;
  }

  .services-row {
    grid-template-columns: 1fr;
  }

  .services-row.row-offset {
    margin-left: 0;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-arrow {
    width: 2px;
    height: 40px;
    margin: 0 auto;
  }

  .process-arrow::after {
    top: auto;
    right: -5px;
    bottom: -8px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 8px solid var(--gold);
    border-bottom: none;
  }

  .case-row {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 56px;
  }

  .case-row.reverse .case-media {
    order: 1;
  }

  .case-row.reverse .case-content {
    order: 2;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 0 32px;
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    gap: 12px;
  }

  .logo {
    font-size: 16px;
  }

  .nav-cta {
    padding: 6px 12px;
    font-size: 12px;
  }

  .hero {
    padding-top: 96px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

  .hero-trust {
    flex-wrap: wrap;
    gap: 12px 20px;
  }

  .stats-grid {
    gap: 24px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .service-card {
    padding: 24px;
  }

  .case-content h3 {
    font-size: 22px;
  }

  .list-item {
    flex-wrap: wrap;
    gap: 6px 12px;
  }

  .list-title {
    flex-basis: 100%;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
  }

  .list-cat {
    order: 3;
  }

  .faq-question button {
    font-size: 15px;
    padding: 20px 4px;
  }

  .faq-answer {
    padding-left: 40px;
  }

  .contact-info {
    padding: 24px;
  }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
  :root {
    --primary: #1F5147;
    --primary-dark: #163A33;
    --accent: #B9926A;
    --accent-light: #D9C3A5;
    --bg: #F6F4EE;
    --card-bg: #FFFFFF;
    --text: #26241F;
    --text-secondary: #6E6A61;
    --border: #E4DFD3;
    --error: #B23B2E;
    --success: #2E7D5B;
    --warning: #E5A93D;
    --radius: 6px;
    --radius-pill: 50px;
    --shadow: 0 1px 3px rgba(31,81,71,0.08);
    --shadow-hover: 0 8px 24px rgba(31,81,71,0.12);
    --transition: all 0.2s ease;
    --container-max: 1200px;
    --font-title: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
    --font-body: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
    font-size: 16px;
  }

  body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    background-color: var(--bg);
    overflow-x: hidden;
  }

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

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

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

  ul, ol {
    list-style: none;
  }

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

  input, textarea, select {
    font-family: var(--font-body);
    font-size: 16px;
  }

  h1, h2, h3, h4, h5 {
    font-family: var(--font-title);
    line-height: 1.4;
    color: var(--text);
    font-weight: 600;
  }

  /* ===== Container ===== */
  .container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
  }

  .container-narrow {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ===== Navigation ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.4);
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    transition: var(--transition);
  }

  .site-header.scrolled {
    background: rgba(246,244,238,0.96);
    border-bottom: 1px solid var(--border);
  }

  .nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
  }

  .logo a {
    font-family: var(--font-title);
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
  }

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

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

  .main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding: 6px 0;
  }

  .main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
  }

  .main-nav a:hover {
    color: var(--primary);
  }

  .main-nav a:hover::after,
  .main-nav a.active::after {
    width: 100%;
  }

  .main-nav a.active {
    color: var(--accent);
    font-weight: 600;
  }

  .nav-cta {
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .nav-search {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.7);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 12px;
  }

  .nav-search input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    width: 140px;
    color: var(--text);
    padding: 4px 0;
  }

  .nav-search input::placeholder {
    color: var(--text-secondary);
  }

  .nav-search svg {
    width: 16px;
    height: 16px;
    fill: var(--text-secondary);
    flex-shrink: 0;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid var(--primary);
    transition: var(--transition);
  }

  .btn-primary:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
  }

  .btn-primary:active {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(0);
  }

  .btn-primary:focus-visible {
    outline: 2px solid rgba(31,81,71,0.3);
    outline-offset: 2px;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
  }

  .btn-secondary:hover {
    background: rgba(31,81,71,0.08);
    color: var(--primary-dark);
  }

  .btn-secondary:focus-visible {
    outline: 2px solid rgba(31,81,71,0.3);
    outline-offset: 2px;
  }

  .btn-sm {
    padding: 8px 18px;
    font-size: 14px;
  }

  /* Mobile nav toggle */
  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
  }

  .nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
  }

  /* ===== Page Hero / Banner ===== */
  .category-hero {
    position: relative;
    padding: 160px 0 80px;
    background: var(--primary-dark);
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    text-align: center;
  }

  .category-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(22,58,51,0.82);
  }

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

  .category-hero h1 {
    font-size: 44px;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 1px;
  }

  .category-hero .hero-divider {
    width: 80px;
    height: 3px;
    background: var(--accent);
    margin: 0 auto 24px;
    border-radius: 2px;
  }

  .category-hero p {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.8;
  }

  .category-hero .breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
  }

  .category-hero .breadcrumb a {
    color: var(--accent-light);
  }

  .category-hero .breadcrumb a:hover {
    color: #fff;
  }

  /* ===== Content Sections ===== */
  .page-section {
    padding: 80px 0;
  }

  .page-section-alt {
    background: var(--card-bg);
  }

  .section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-title {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--text);
  }

  .section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 720px;
    margin-bottom: 48px;
    line-height: 1.8;
  }

  /* Two column feature */
  .feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
  }

  .feature-row:last-child {
    margin-bottom: 0;
  }

  .feature-row.reverse {
    direction: rtl;
  }

  .feature-row.reverse > * {
    direction: ltr;
  }

  .feature-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border);
  }

  .feature-image img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: transform 0.4s ease;
  }

  .feature-image:hover img {
    transform: scale(1.03);
  }

  .feature-content h3 {
    font-size: 24px;
    margin-bottom: 16px;
  }

  .feature-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.9;
  }

  .feature-content ul {
    margin: 16px 0 24px;
  }

  .feature-content ul li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    line-height: 1.7;
    color: var(--text);
  }

  .feature-content ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 14px;
    height: 2px;
    background: var(--accent);
  }

  /* ===== Steps Timeline ===== */
  .steps-section {
    padding: 80px 0;
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
  }

  .steps-grid::before {
    content: "";
    position: absolute;
    top: 32px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    z-index: 0;
  }

  .step-item {
    text-align: center;
    position: relative;
    z-index: 1;
  }

  .step-number {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--card-bg);
    border: 2px solid var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-title);
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    box-shadow: var(--shadow);
  }

  .step-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
  }

  .step-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== Info Cards ===== */
  .cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .info-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .info-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
  }

  .info-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: rgba(31,81,71,0.4);
    transform: translateY(-4px);
  }

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

  .card-icon {
    width: 60px;
    height: 60px;
    background: rgba(31,81,71,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
  }

  .card-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--primary);
  }

  .info-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
  }

  .info-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
  }

  .card-link:hover {
    color: var(--accent);
  }

  .card-link svg {
    width: 16px;
    height: 16px;
    transition: transform 0.2s;
  }

  .card-link:hover svg {
    transform: translateX(4px);
  }

  /* ===== Extended Reading List ===== */
  .reading-list-section {
    padding: 80px 0;
    background: var(--card-bg);
  }

  .reading-list {
    max-width: 860px;
    margin: 0 auto;
  }

  .reading-list li {
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
  }

  .reading-list li:first-child {
    border-top: 1px solid var(--border);
  }

  .reading-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 8px;
    font-size: 16px;
    color: var(--text);
    transition: var(--transition);
  }

  .reading-list a:hover {
    color: var(--primary);
    padding-left: 20px;
  }

  .reading-list .arrow-icon {
    color: var(--accent);
    font-size: 18px;
    flex-shrink: 0;
  }

  /* ===== FAQ ===== */
  .faq-section {
    padding: 80px 0;
  }

  .faq-list {
    max-width: 860px;
    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;
    gap: 16px;
    padding: 20px 8px;
    cursor: pointer;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-title);
    font-size: 18px;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
  }

  .faq-question::before {
    content: "Q";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
  }

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

  .faq-answer {
    display: none;
    padding: 0 8px 24px 44px;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
  }

  .faq-arrow {
    margin-left: auto;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.2s;
  }

  .faq-item.active .faq-arrow {
    transform: rotate(180deg);
  }

  /* ===== CTA ===== */
  .cta-section {
    padding: 80px 0;
    background: var(--primary-dark);
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    position: relative;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(22,58,51,0.9);
  }

  .cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
  }

  .cta-content h2 {
    font-size: 32px;
    color: #fff;
    margin-bottom: 16px;
  }

  .cta-content p {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    line-height: 1.8;
  }

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

  .cta-buttons .btn-primary {
    background: var(--accent);
    border-color: var(--accent);
  }

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

  .cta-buttons .btn-secondary {
    border-color: rgba(255,255,255,0.6);
    color: #fff;
  }

  .cta-buttons .btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
    color: #fff;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.8);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding: 64px 24px 48px;
  }

  .footer-brand .footer-logo {
    font-family: var(--font-title);
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
    max-width: 280px;
  }

  .footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 16px;
  }

  .footer-col ul li {
    margin-bottom: 10px;
  }

  .footer-col ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    transition: var(--transition);
    position: relative;
    padding-bottom: 2px;
  }

  .footer-col ul li a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: var(--transition);
  }

  .footer-col ul li a:hover {
    color: #fff;
  }

  .footer-col ul li a:hover::after {
    width: 100%;
  }

  .footer-bottom {
    background: rgba(0,0,0,0.2);
    padding: 20px 0;
  }

  .footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
  }

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

  .footer-bottom .footer-icp {
    font-size: 13px;
  }

  /* ===== Responsive ===== */
  @media (max-width: 1280px) {
    .container {
      padding: 0 32px;
    }

    .main-nav {
      gap: 24px;
    }
  }

  @media (max-width: 1024px) {
    .nav-wrapper {
      padding: 0 20px;
    }

    .main-nav {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      background: rgba(246,244,238,0.98);
      flex-direction: column;
      padding: 24px;
      gap: 16px;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-hover);
    }

    .main-nav.open {
      display: flex;
    }

    .main-nav a {
      font-size: 17px;
      padding: 8px 0;
      width: 100%;
    }

    .main-nav a::after {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }

    .nav-search {
      display: none;
    }

    .nav-cta .btn-primary {
      padding: 8px 20px;
      font-size: 14px;
    }

    .category-hero h1 {
      font-size: 36px;
    }

    .feature-row {
      grid-template-columns: 1fr;
      gap: 32px;
      margin-bottom: 56px;
    }

    .feature-row.reverse {
      direction: ltr;
    }

    .steps-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .steps-grid::before {
      display: none;
    }

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

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

  @media (max-width: 768px) {
    .category-hero {
      padding: 140px 0 60px;
    }

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

    .category-hero p {
      font-size: 16px;
    }

    .page-section {
      padding: 56px 0;
    }

    .section-title {
      font-size: 26px;
    }

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

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

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 24px;
      padding: 48px 24px 32px;
    }

    .footer-bottom .container {
      flex-direction: column;
      text-align: center;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 16px;
    }

    .nav-wrapper {
      padding: 0 16px;
      height: 64px;
    }

    .logo a {
      font-size: 18px;
    }

    .nav-cta .btn-primary {
      display: none;
    }

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

    .cta-buttons {
      flex-direction: column;
    }

    .cta-buttons .btn-primary,
    .cta-buttons .btn-secondary {
      width: 100%;
    }
  }

/* roulang page: article */
:root {
    --primary: #1F5147;
    --primary-dark: #163A33;
    --accent: #B9926A;
    --accent-light: #D9C3A5;
    --bg: #F6F4EE;
    --card: #FFFFFF;
    --text: #26241F;
    --text-weak: #6E6A61;
    --border: #E4DFD3;
    --error: #B23B2E;
    --success: #2E7D5B;
    --warning: #E5A93D;
    --radius: 6px;
    --shadow-sm: 0 1px 3px rgba(31,81,71,.08);
    --shadow-lg: 0 8px 24px rgba(31,81,71,.12);
    --font-title: 'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
    --font-body: 'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
ul, ol { list-style: none; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: inherit; }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}
.container-narrow { max-width: 860px; }

/* ===== 按钮体系 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
    border: 1px solid transparent;
    transition: all .2s ease;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:active {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}
.btn-primary:focus-visible {
    outline: 2px solid rgba(31,81,71,.3);
    outline-offset: 2px;
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: rgba(31,81,71,.08);
    color: var(--primary-dark);
}
.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-accent:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-sm { padding: 8px 20px; font-size: 14px; }

/* ===== 徽章 ===== */
.badge {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    padding: 5px 16px;
    border-radius: 999px;
    letter-spacing: .4px;
}

/* ===== 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,.4);
    box-shadow: 0 4px 24px rgba(0,0,0,.06);
    transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
    background: rgba(246,244,238,.96);
    box-shadow: 0 2px 16px rgba(31,81,71,.08);
    border-bottom-color: rgba(228,223,211,.6);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.logo {
    font-family: var(--font-title);
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
    letter-spacing: .5px;
}
.logo:hover { color: var(--primary-dark); }
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.main-nav a {
    position: relative;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    border-radius: 4px;
    transition: color .2s ease;
}
.main-nav a::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 4px;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
    border-radius: 2px;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after { transform: scaleX(1); }
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: var(--radius);
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
    padding-top: 110px;
    padding-bottom: 8px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 14px;
    color: var(--text-weak);
}
.breadcrumb a { color: var(--text-weak); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text); font-weight: 500; max-width: 420px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===== 文章头区 ===== */
.article-hero {
    position: relative;
    padding: 60px 0 56px;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(246,244,238,.94), rgba(246,244,238,.98));
}
.article-hero .container { position: relative; z-index: 2; }
.article-hero .badge { margin-bottom: 20px; }
.article-hero h1 {
    font-family: var(--font-title);
    font-size: 42px;
    line-height: 1.35;
    color: var(--text);
    margin-bottom: 20px;
    max-width: 800px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: var(--text-weak);
}
.article-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta .meta-item::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 4px;
}
.article-meta .meta-item:first-child::before { display: none; }

/* ===== 正文区 ===== */
.article-body {
    padding: 48px 0 64px;
}
.article-content {
    max-width: 720px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 2;
    color: var(--text);
}
.article-content p {
    margin-bottom: 24px;
}
.article-content h2 {
    font-family: var(--font-title);
    font-size: 28px;
    line-height: 1.4;
    margin: 48px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent-light);
}
.article-content h3 {
    font-family: var(--font-title);
    font-size: 22px;
    line-height: 1.5;
    margin: 36px 0 16px;
}
.article-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin: 28px 0 12px;
}
.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: rgba(185,146,106,.08);
    padding: 16px 20px;
    margin: 24px 0;
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-weak);
}
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content ul,
.article-content ol {
    margin: 0 0 24px;
    padding-left: 1.6em;
}
.article-content ul li { list-style: disc; margin: 8px 0; }
.article-content ol li { list-style: decimal; margin: 8px 0; }
.article-content li::marker { color: var(--accent); }
.article-content img {
    max-width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin: 24px 0;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
    line-height: 1.6;
}
.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
}
.article-content th {
    background: #F0EDE5;
    font-weight: 600;
    color: var(--primary-dark);
}
.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--accent-light);
}
.article-content a:hover { color: var(--accent); text-decoration-color: var(--accent); }
.article-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 40px 0;
}

/* ===== 空状态 ===== */
.article-empty {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    padding: 120px 24px;
}
.article-empty h3 {
    font-family: var(--font-title);
    font-size: 28px;
    color: var(--text);
    margin-bottom: 16px;
}
.article-empty a {
    display: inline-block;
    margin-top: 24px;
    padding: 12px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    font-size: 15px;
    transition: background .2s ease;
}
.article-empty a:hover { background: var(--accent); color: #fff; }

/* ===== 相关推荐 ===== */
.related-section {
    padding: 64px 0;
    background: var(--card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 32px;
}
.section-head h2 {
    font-family: var(--font-title);
    font-size: 30px;
    line-height: 1.4;
    color: var(--text);
}
.text-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.text-link:hover { color: var(--accent); }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    display: block;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all .25s ease;
    position: relative;
}
.related-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .3s ease;
    z-index: 2;
}
.related-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(31,81,71,.4);
    transform: translateY(-3px);
}
.related-card:hover::before { transform: scaleX(1); }
.related-img {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #EDEAE3;
}
.related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.related-card:hover .related-img img { transform: scale(1.04); }
.related-info {
    padding: 18px 20px 20px;
}
.related-info h3 {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    color: var(--text);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-info .date {
    font-size: 13px;
    color: var(--text-weak);
}

/* ===== 上一篇/下一篇 ===== */
.post-nav-section {
    padding: 40px 0 56px;
}
.post-nav {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid var(--border);
    padding-top: 28px;
}
.post-prev, .post-next {
    flex: 1;
    min-width: 0;
}
.post-next { text-align: right; }
.label {
    display: block;
    font-size: 13px;
    color: var(--text-weak);
    margin-bottom: 6px;
}
.post-prev a, .post-next a {
    font-size: 16px;
    font-weight: 500;
    color: var(--primary);
    line-height: 1.5;
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.post-prev a:hover, .post-next a:hover { color: var(--accent); }

/* ===== CTA 区 ===== */
.cta-section {
    padding: 56px 24px 80px;
}
.cta-box {
    background: var(--primary-dark);
    border-radius: 12px;
    padding: 48px 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.cta-box::after {
    content: '';
    position: absolute;
    right: -60px;
    top: -60px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(185,146,106,.15);
}
.cta-text h2 {
    font-family: var(--font-title);
    font-size: 28px;
    line-height: 1.4;
    color: #fff;
    margin-bottom: 10px;
}
.cta-text p {
    color: rgba(255,255,255,.75);
    font-size: 15px;
}
.cta-box .btn { position: relative; z-index: 2; flex-shrink: 0; }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,.7);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding: 64px 24px 48px;
}
.footer-logo {
    font-family: var(--font-title);
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 280px;
}
.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    color: rgba(255,255,255,.65);
    font-size: 14px;
    transition: color .2s ease;
}
.footer-col ul a:hover {
    color: #fff;
    text-decoration: underline;
    text-decoration-color: var(--accent);
    text-underline-offset: 4px;
}
.footer-bottom {
    background: rgba(0,0,0,.18);
    padding: 20px 0;
}
.footer-bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,.5);
}
.footer-icp { letter-spacing: 1px; }

/* ===== 响应式断点 ===== */
@media (max-width: 1280px) {
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
}
@media (max-width: 1024px) {
    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(246,244,238,.98);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px;
        gap: 4px;
        box-shadow: 0 16px 32px rgba(0,0,0,.08);
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        transition: transform .3s ease;
        display: flex;
    }
    .main-nav.open { transform: translateY(0); }
    .main-nav a {
        padding: 14px 8px;
        font-size: 18px;
        border-bottom: 1px solid rgba(228,223,211,.6);
    }
    .main-nav a:last-child { border-bottom: none; }
    .main-nav a::after { display: none; }
    .nav-toggle { display: flex; }
    .header-actions .btn { display: none; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .article-hero h1 { font-size: 34px; }
    .cta-box { flex-direction: column; text-align: center; padding: 40px 28px; }
    .cta-box::after { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 768px) {
    .related-grid { grid-template-columns: 1fr; }
    .post-nav { flex-direction: column; gap: 16px; }
    .post-next { text-align: left; }
    .article-hero { padding: 48px 0 40px; }
    .article-hero h1 { font-size: 28px; line-height: 1.4; }
    .article-body { padding: 32px 0 48px; }
    .article-content { font-size: 15px; }
    .article-content h2 { font-size: 24px; }
    .article-content h3 { font-size: 20px; }
    .article-content table { display: block; overflow-x: auto; white-space: nowrap; }
    .breadcrumb-wrap { padding-top: 96px; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 24px 32px; }
    .footer-bottom .container { flex-direction: column; text-align: center; }
    .cta-box { padding: 32px 24px; }
    .cta-text h2 { font-size: 24px; }
}
@media (max-width: 520px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .logo { font-size: 19px; }
    .article-meta { flex-direction: column; gap: 8px; }
    .article-meta .meta-item::before { display: none; }
    .related-info h3 { font-size: 15px; }
    .article-content { font-size: 15px; line-height: 1.9; }
    .btn { padding: 10px 20px; font-size: 14px; }
}

/* roulang page: category2 */
:root {
  --primary: #1F5147;
  --primary-deep: #163A33;
  --accent: #B9926A;
  --accent-light: #D9C3A5;
  --accent-soft: rgba(185, 146, 106, 0.15);
  --bg: #F6F4EE;
  --card: #FFFFFF;
  --text: #26241F;
  --text-secondary: #6E6A61;
  --border: #E4DFD3;
  --error: #B23B2E;
  --success: #2E7D5B;
  --warning: #E5A93D;
  --radius: 6px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(31, 81, 71, 0.08);
  --shadow-hover: 0 8px 24px rgba(31, 81, 71, 0.12);
  --container: 1200px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--accent);
}
button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
}
input, select, textarea {
  font-family: var(--font-sans);
  font-size: 15px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
}
section .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-tag::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-head h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.4;
  color: var(--primary-deep);
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
}
h2 {
  font-family: var(--font-serif);
  color: var(--primary-deep);
  line-height: 1.4;
}
h3 {
  font-family: var(--font-serif);
  color: var(--primary-deep);
  line-height: 1.5;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(246, 244, 238, 0.96);
  box-shadow: 0 4px 24px rgba(31, 81, 71, 0.08);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-deep);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.logo:hover {
  color: var(--primary);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  transition: color 0.2s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
}
.main-nav a:hover {
  color: var(--primary);
}
.main-nav a:hover::after {
  width: 100%;
}
.main-nav a.active {
  color: var(--accent);
  font-weight: 600;
}
.main-nav a.active::after {
  width: 100%;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--primary-deep);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background-image: url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  padding: 160px 0 80px;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(22, 58, 51, 0.88) 0%, rgba(31, 81, 71, 0.76) 50%, rgba(22, 58, 51, 0.35) 100%);
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 20px;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}
.breadcrumb a:hover {
  color: var(--accent-light);
}
.breadcrumb span {
  color: rgba(255, 255, 255, 0.5);
}
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.3;
  color: #FFFFFF;
  margin-bottom: 18px;
  letter-spacing: 2px;
}
.hero-line {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin-bottom: 20px;
}
.page-hero .hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
  max-width: 620px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
}
.btn-primary:hover {
  background: var(--accent);
  color: #FFFFFF;
}
.btn-primary:active {
  background: var(--primary-deep);
  color: #FFFFFF;
}
.btn-primary:focus-visible {
  outline: 2px solid rgba(31, 81, 71, 0.3);
  outline-offset: 2px;
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #FFFFFF;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  border-color: #FFFFFF;
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(31, 81, 71, 0.08);
  color: var(--primary);
}
.btn-outline:active {
  background: rgba(31, 81, 71, 0.15);
}

/* ===== Intro Split ===== */
.intro-section {
  background: var(--bg);
}
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-media img {
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  border: 1px solid var(--border);
}
.split-text h2 {
  font-size: 32px;
  line-height: 1.4;
  margin-bottom: 16px;
}
.split-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.9;
}
.tick-list {
  list-style: none;
  margin-top: 12px;
}
.tick-list li {
  padding-left: 30px;
  position: relative;
  margin-bottom: 10px;
  color: var(--text);
  font-size: 15px;
}
.tick-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}

/* ===== Process ===== */
.process-section {
  background: #FFFFFF;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}
.process-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.process-item:hover {
  background: #FFFFFF;
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.process-step {
  width: 44px;
  height: 44px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.process-item h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.process-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feature-card:hover {
  border-color: rgba(31, 81, 71, 0.4);
  box-shadow: var(--shadow-hover);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(31, 81, 71, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--primary);
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--primary-deep);
  padding: 60px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-number {
  font-family: var(--font-serif);
  font-size: 44px;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 1px;
}

/* ===== Scene Section ===== */
.scene-section {
  background: var(--bg);
}
.scene-grid {
  display: flex;
  flex-direction: column;
  gap: 56px;
}
.scene-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.scene-row.reverse .scene-media {
  order: 2;
}
.scene-row.reverse .scene-content {
  order: 1;
}
.scene-media img {
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-hover);
}
.scene-content h2 {
  font-size: 26px;
  margin-bottom: 14px;
}
.scene-content p {
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(185, 146, 106, 0.3);
}

/* ===== Reading List ===== */
.reading-section {
  background: #FFFFFF;
  border-top: 1px solid var(--border);
}
.reading-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.reading-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 22px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.reading-item:hover {
  background: #FFFFFF;
  border-color: rgba(31, 81, 71, 0.3);
  box-shadow: var(--shadow-hover);
}
.reading-num {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--accent);
  line-height: 1;
  min-width: 36px;
}
.reading-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
  transition: color 0.2s ease;
}
.reading-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-of-type {
  border-top: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  cursor: pointer;
  user-select: none;
  transition: color 0.2s ease;
}
.faq-question h3 {
  font-size: 17px;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text);
  flex: 1;
  transition: color 0.2s ease;
}
.faq-question .q-mark {
  font-family: var(--font-serif);
  color: var(--accent);
  font-weight: 700;
  font-size: 20px;
  min-width: 24px;
  text-align: center;
}
.faq-arrow {
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--text-secondary);
  border-bottom: 2px solid var(--text-secondary);
  transform: rotate(45deg);
  transition: transform 0.25s ease, border-color 0.2s ease;
}
.faq-item.open .faq-arrow {
  transform: rotate(-135deg);
  border-color: var(--accent);
}
.faq-answer {
  display: none;
  padding: 0 0 24px 40px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
}
.faq-answer p + p {
  margin-top: 10px;
}
.faq-item.open .faq-answer {
  display: block;
}
.faq-item.open h3 {
  color: var(--primary);
}

/* ===== Contact ===== */
.contact-section {
  background: #FFFFFF;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: start;
}
.contact-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 36px;
}
.contact-box h2 {
  font-size: 24px;
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #FFFFFF;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group textarea {
  min-height: 110px;
  resize: vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 81, 71, 0.1);
}
.form-note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 14px;
  line-height: 1.6;
}
.contact-info-box {
  background: var(--primary-deep);
  border-radius: 8px;
  padding: 36px;
  color: #FFFFFF;
}
.contact-info-box h3 {
  color: #FFFFFF;
  font-size: 22px;
  margin-bottom: 20px;
}
.contact-info-list {
  list-style: none;
}
.contact-info-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 15px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
}
.contact-info-list li:last-child {
  border-bottom: none;
}
.contact-info-list .info-icon {
  color: var(--accent);
  flex: 0 0 auto;
  margin-top: 2px;
}
.contact-info-list strong {
  display: block;
  color: #FFFFFF;
  font-weight: 600;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, 0.85);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 24px 48px;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  color: var(--accent);
  font-size: 16px;
  font-family: var(--font-sans);
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-col a:hover {
  color: #FFFFFF;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
}
.footer-bottom {
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-icp {
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
    padding: 12px 24px 24px;
    display: none;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 14px 8px;
    font-size: 17px;
    border-bottom: 1px solid var(--border);
  }
  .main-nav a::after {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .reading-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  .page-hero {
    min-height: 380px;
    padding: 120px 0 56px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero .hero-desc {
    font-size: 15px;
  }
  .section-head h2,
  .split-text h2 {
    font-size: 24px;
  }
  .split-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .scene-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .scene-row.reverse .scene-media {
    order: 0;
  }
  .scene-row.reverse .scene-content {
    order: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px 16px;
  }
  .stat-number {
    font-size: 34px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .contact-box {
    padding: 24px;
  }
  .contact-info-box {
    padding: 24px;
  }
  .faq-answer {
    padding-left: 24px;
  }
  .reading-item {
    padding: 18px;
  }
  .reading-num {
    font-size: 24px;
    min-width: 30px;
  }
  .logo {
    font-size: 18px;
  }
}