/* roulang page: index */
:root {
  --color-primary: #0E9F8B;
  --color-primary-deep: #0B3B3A;
  --color-primary-light: #E6F4F0;
  --color-accent: #F59E0B;
  --color-accent-hover: #D97706;
  --color-bg: #F6F8F7;
  --color-surface: #FFFFFF;
  --color-section-alt: #E9F0ED;
  --color-text: #16211F;
  --color-text-secondary: #5B6B66;
  --color-border: #D6DFDB;
  --gradient-brand: linear-gradient(135deg, #0E9F8B 0%, #0B3B3A 100%);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(22, 33, 31, .06);
  --shadow-md: 0 4px 16px rgba(22, 33, 31, .08);
  --shadow-lg: 0 12px 32px rgba(22, 33, 31, .12);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

input, textarea {
  font-family: inherit;
  outline: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(214, 223, 219, .5);
  transition: box-shadow .3s ease, background .3s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(22, 33, 31, .08);
}

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

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

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -.02em;
  line-height: 1.2;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  display: inline-block;
  padding: 8px 18px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 8px;
  transition: all .2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(14, 159, 139, .06);
}

.nav-link.is-active {
  color: var(--color-primary);
  font-weight: 600;
  background: rgba(14, 159, 139, .1);
}

.nav-link.is-active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--color-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-brand);
  color: #fff;
  font-weight: 600;
  font-size: .96rem;
  padding: 12px 28px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(14, 159, 139, .28);
  transition: all .3s ease;
  border: none;
  cursor: pointer;
  line-height: 1.4;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14, 159, 139, .36);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(14, 159, 139, .3);
}

.btn-primary .arrow {
  transition: transform .3s ease;
}

.btn-primary:hover .arrow {
  transform: translateX(4px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
  font-weight: 600;
  font-size: .96rem;
  padding: 11px 26px;
  border-radius: 999px;
  transition: all .3s ease;
  cursor: pointer;
  line-height: 1.4;
}

.btn-outline:hover {
  background: rgba(14, 159, 139, .06);
  border-color: var(--color-primary-deep);
  color: var(--color-primary-deep);
  transform: translateY(-1px);
}

.btn-nav {
  padding: 10px 22px;
  font-size: .9rem;
}

.btn-nav-mobile {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(14, 159, 139, .06);
  transition: background .2s;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all .3s;
}

.nav-toggle:hover {
  background: rgba(14, 159, 139, .12);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #F0FAF6 0%, #E4F0EC 50%, #D9E9E4 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .22;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(246, 248, 247, .2) 0%, rgba(246, 248, 247, .75) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-primary-deep);
  box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -.02em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.08rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 52px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: all .2s;
}

.badge-pill:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.badge-pill svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* ===== Sections ===== */
.section {
  padding-top: 80px;
  padding-bottom: 80px;
}

@media (max-width: 768px) {
  .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }
}

.section-alt {
  background: var(--color-section-alt);
}

.section-head {
  margin-bottom: 48px;
  max-width: 720px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-label::before {
  content: '';
  width: 22px;
  height: 4px;
  border-radius: 4px;
  background: var(--gradient-brand);
}

.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  letter-spacing: -.01em;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* ===== Feature Cards ===== */
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  height: 100%;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(14, 159, 139, .4);
  transform: translateY(-4px);
}

.feature-card.featured {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
}

.feature-card.featured .feature-card-text {
  color: rgba(255, 255, 255, .85);
}

.feature-card.featured .feature-icon {
  background: rgba(255, 255, 255, .16);
  color: #fff;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: all .3s;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}

.feature-card.featured .feature-card-title {
  color: #fff;
}

.feature-card-text {
  font-size: .93rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== Stats ===== */
.stats-section {
  background: var(--gradient-brand);
  padding-top: 64px;
  padding-bottom: 64px;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .1);
}

.stats-section::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 10%;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, .08);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  border-right: 1px solid rgba(255, 255, 255, .12);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  margin-bottom: 8px;
}

.stat-label {
  font-size: .92rem;
  color: rgba(255, 255, 255, .75);
  font-weight: 500;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    padding: 20px 12px;
  }
  .stat-item:nth-child(odd) {
    border-right: 1px solid rgba(255, 255, 255, .1);
  }
  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }
}

/* ===== Scenario ===== */
.scenario-row {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 64px;
}

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

.scenario-image {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  min-height: 260px;
  background-size: cover;
  background-position: center;
}

.scenario-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 260px;
  transition: transform .5s ease;
}

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

.scenario-text {
  flex: 1;
}

.scenario-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 16px;
}

.scenario-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.4;
}

.scenario-desc {
  font-size: .97rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

.scenario-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .92rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: all .2s;
}

.scenario-link:hover {
  color: var(--color-primary-deep);
  gap: 10px;
}

@media (max-width: 768px) {
  .scenario-row {
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
  }
  .scenario-row:nth-child(even) {
    flex-direction: column;
  }
  .scenario-image {
    width: 100%;
  }
}

/* ===== Process Timeline ===== */
.process-section {
  background: var(--color-surface);
  position: relative;
}

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

.process-grid::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--color-primary) 0 6px, transparent 6px 12px);
  opacity: .3;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 24px rgba(14, 159, 139, .3);
  position: relative;
  z-index: 2;
  border: 4px solid var(--color-surface);
}

.process-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.process-desc {
  font-size: .9rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 220px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 16px;
  }
  .process-grid::before {
    display: none;
  }
}

@media (max-width: 480px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== News List ===== */
.news-section {
  background: var(--color-bg);
}

.news-list {
  max-width: 960px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  gap: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 16px;
  transition: all .3s ease;
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(14, 159, 139, .3);
  transform: translateX(4px);
}

.news-date {
  flex-shrink: 0;
  width: 96px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 8px;
  text-align: center;
}

.news-date strong {
  font-size: 1.2rem;
  color: var(--color-primary-deep);
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
}

.news-date span {
  font-size: .78rem;
  color: var(--color-text-secondary);
}

.news-body {
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.news-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 999px;
  padding: 4px 12px;
}

.news-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.news-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

.news-title a {
  transition: color .2s;
}

.news-title a:hover {
  color: var(--color-primary);
}

.news-summary {
  font-size: .9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 10px;
}

.news-link {
  font-size: .88rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s;
}

.news-link:hover {
  gap: 8px;
  color: var(--color-primary-deep);
}

.news-empty {
  background: var(--color-section-alt);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  font-size: .95rem;
  color: var(--color-text-secondary);
  max-width: 960px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .news-item {
    flex-direction: column;
    gap: 14px;
    padding: 20px;
  }
  .news-date {
    width: auto;
    flex-direction: row;
    gap: 8px;
    padding: 8px 14px;
  }
  .news-summary {
    white-space: normal;
  }
}

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

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .3s;
}

.faq-item.is-active {
  border-color: rgba(14, 159, 139, .4);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 22px 24px;
  text-align: left;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  line-height: 1.5;
  transition: color .2s;
}

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

.faq-q-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: .9rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-icon {
  margin-left: auto;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(14, 159, 139, .08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform .3s, background .3s;
}

.faq-item.is-active .faq-icon {
  transform: rotate(180deg);
  background: var(--color-primary-light);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}

.faq-answer-inner {
  padding: 0 24px 24px;
  padding-left: 72px;
}

.faq-answer-inner p {
  font-size: .94rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

@media (max-width: 640px) {
  .faq-answer-inner {
    padding-left: 56px;
    padding-right: 20px;
  }
}

/* ===== CTA Contact ===== */
.cta-section {
  background: var(--gradient-brand);
  position: relative;
  overflow: hidden;
  padding-top: 72px;
  padding-bottom: 72px;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .08);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, .06);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.cta-left h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-left p {
  font-size: 1rem;
  color: rgba(255, 255, 255, .8);
  line-height: 1.75;
  margin-bottom: 28px;
  max-width: 440px;
}

.cta-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, .85);
  font-size: .95rem;
}

.cta-points li svg {
  width: 18px;
  height: 18px;
  color: #fff;
  flex-shrink: 0;
}

.cta-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, .15);
}

.cta-form h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.cta-form p {
  font-size: .9rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: .86rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: .94rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: all .25s;
  line-height: 1.5;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 159, 139, .15);
  background: #fff;
}

.form-group textarea {
  min-height: 96px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #a0afaa;
}

.btn-submit {
  width: 100%;
  margin-top: 8px;
}

@media (max-width: 768px) {
  .cta-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .cta-left {
    text-align: left;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: linear-gradient(160deg, #0B3B3A 0%, #16211F 100%);
  color: rgba(255, 255, 255, .7);
  padding-top: 64px;
  padding-bottom: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
  display: inline-block;
}

.footer-brand p {
  font-size: .9rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-title {
  font-size: .95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .02em;
}

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

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .9rem;
  color: rgba(255, 255, 255, .7);
  transition: color .2s, padding-left .2s;
}

.footer-links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .84rem;
}

.footer-bottom a {
  color: rgba(255, 255, 255, .55);
}

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

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== Back to top ===== */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  transition: all .3s ease;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(14, 159, 139, .3);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ===== Responsive Nav ===== */
@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-inner {
    height: 64px;
  }

  .logo-text {
    font-size: .92rem;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 6px;
    display: none;
    box-shadow: 0 16px 32px rgba(22, 33, 31, .12);
    border-radius: 0 0 16px 16px;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
  }

  .nav-link.is-active::after {
    left: 14px;
    transform: none;
    width: 3px;
    height: 18px;
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
  }

  .nav-actions .btn-nav {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .btn-nav-mobile {
    display: inline-flex;
    justify-content: center;
    margin-top: 10px;
    width: 100%;
  }

  .hero {
    padding: 120px 0 64px;
  }

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

  .hero-actions .btn-primary,
  .hero-actions .btn-outline {
    width: 100%;
    justify-content: center;
  }
}

@media (min-width: 769px) {
  .nav-links {
    display: flex !important;
  }

  .btn-nav-mobile {
    display: none !important;
  }
}

/* ===== Focus accessibility ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Misc utility ===== */
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.overflow-hidden {
  overflow: hidden;
}

/* roulang page: article */
:root{
--color-primary:#0E9F8B;--color-primary-deep:#0B3B3A;--color-accent:#F59E0B;--color-accent-hover:#D97706;
--color-bg:#F6F8F7;--color-section-alt:#E9F0ED;--color-ink:#16211F;--color-ink-soft:#5B6B66;--color-line:#D6DFDB;
--radius-lg:18px;--radius-xl:24px;--radius-2xl:32px;
--shadow-card:0 4px 24px rgba(22,33,31,.06);--shadow-hover:0 14px 36px rgba(22,33,31,.12);
--shadow-header:0 4px 24px rgba(22,33,31,.06);--transition:.3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--color-ink);background:var(--color-bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit}
input,textarea,select{font:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(246,248,247,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(214,223,219,.7);transition:box-shadow var(--transition)}
.site-header.is-scrolled{box-shadow:var(--shadow-header)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--color-ink);font-size:1.06rem;letter-spacing:-.01em;flex-shrink:0}
.logo-mark{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-deep));color:#fff;flex-shrink:0;box-shadow:0 4px 12px rgba(14,159,139,.25)}
.logo-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;margin-right:20px}
.nav-link{position:relative;display:inline-flex;align-items:center;padding:10px 18px;font-size:.95rem;font-weight:500;color:var(--color-ink-soft);border-radius:10px;transition:color var(--transition),background var(--transition)}
.nav-link:hover{color:var(--color-primary);background:rgba(14,159,139,.06)}
.nav-link::after{content:"";position:absolute;left:18px;right:18px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--color-primary),var(--color-primary-deep));opacity:0;transform:scaleX(.4);transition:opacity var(--transition),transform var(--transition)}
.nav-link.is-active{color:var(--color-primary);font-weight:600}
.nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-deep));color:#fff;font-weight:600;font-size:.93rem;padding:11px 26px;border-radius:999px;box-shadow:0 4px 16px rgba(14,159,139,.25);transition:transform var(--transition),box-shadow var(--transition),filter var(--transition);white-space:nowrap}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,159,139,.35);filter:brightness(1.04)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(14,159,139,.25)}
.btn-primary svg.arrow{transition:transform var(--transition)}
.btn-primary:hover svg.arrow{transform:translateX(3px)}
.btn-nav-mobile{display:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px;border-radius:10px;background:rgba(14,159,139,.08)}
.nav-toggle span{display:block;height:2px;width:22px;background:var(--color-primary);border-radius:2px;transition:transform var(--transition),opacity var(--transition)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Main */
.main-wrap{min-height:60vh}
.article-banner{position:relative;padding:56px 0 32px;background:linear-gradient(180deg,#f0f7f5 0%,var(--color-bg) 100%)}

/* Breadcrumb */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.85rem;color:var(--color-ink-soft);margin-bottom:20px}
.breadcrumb a{color:var(--color-ink-soft);transition:color var(--transition)}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .sep{color:#A8B5B0;font-size:.8rem}
.breadcrumb .current{color:var(--color-ink);font-weight:500;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Article Title */
.article-head{max-width:900px;margin:0 auto 40px;text-align:center}
.article-head h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.02em;color:var(--color-ink);margin-bottom:20px;word-break:break-word}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;font-size:.88rem;color:var(--color-ink-soft)}
.article-meta .dot{color:#A8B5B0;font-size:.7rem}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item svg{width:15px;height:15px;color:var(--color-primary)}
.article-divider{max-width:900px;margin:0 auto 44px;height:1px;background:linear-gradient(90deg,transparent,var(--color-line),transparent)}

/* Article Content */
.article-content-wrap{max-width:900px;margin:0 auto;padding:0 0 60px}
.article-content-inner{max-width:760px;margin:0 auto}
.prose-content{color:var(--color-ink);font-size:1.03rem;line-height:1.85}
.prose-content h2{font-size:1.45rem;font-weight:700;color:var(--color-ink);margin:2.4rem 0 1.1rem;padding-left:14px;border-left:4px solid var(--color-primary);line-height:1.4}
.prose-content h3{font-size:1.22rem;font-weight:600;color:var(--color-ink);margin:2rem 0 .9rem;line-height:1.45}
.prose-content h4{font-size:1.06rem;font-weight:600;color:var(--color-ink);margin:1.6rem 0 .7rem}
.prose-content p{margin-bottom:1.5em;color:var(--color-ink-soft)}
.prose-content a{color:var(--color-primary);border-bottom:1px solid rgba(14,159,139,.3);transition:border-color var(--transition)}
.prose-content a:hover{border-bottom-color:var(--color-primary)}
.prose-content ul{list-style:disc;padding-left:1.6rem;margin:1.2rem 0 1.6rem;color:var(--color-ink-soft)}
.prose-content ul li{margin-bottom:.55rem;padding-left:.25rem}
.prose-content ul li::marker{color:var(--color-primary)}
.prose-content ol{list-style:decimal;padding-left:1.6rem;margin:1.2rem 0 1.6rem;color:var(--color-ink-soft)}
.prose-content ol li{margin-bottom:.55rem;padding-left:.25rem}
.prose-content ol li::marker{color:var(--color-primary);font-weight:600}
.prose-content blockquote{border-left:4px solid var(--color-primary);background:var(--color-section-alt);padding:1.1rem 1.5rem;margin:1.6rem 0;border-radius:0 14px 14px 0;color:var(--color-ink-soft);font-style:normal}
.prose-content blockquote p:last-child{margin-bottom:0}
.prose-content img{border-radius:var(--radius-lg);margin:1.8rem auto;box-shadow:var(--shadow-card)}
.prose-content figure{margin:1.8rem 0}
.prose-content figure img{margin:0 auto 12px}
.prose-content figcaption{text-align:center;color:var(--color-ink-soft);font-size:.85rem;line-height:1.6}
.prose-content hr{border:none;height:1px;background:var(--color-line);margin:2.2rem auto;max-width:80%}
.prose-content table{width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.95rem;border-radius:12px;overflow:hidden}
.prose-content table th{background:var(--color-section-alt);color:var(--color-ink);font-weight:600;padding:12px 16px;text-align:left;border-bottom:1px solid var(--color-line)}
.prose-content table td{padding:12px 16px;border-bottom:1px solid var(--color-line);color:var(--color-ink-soft)}
.prose-content table tr:last-child td{border-bottom:none}
.prose-content code{background:var(--color-section-alt);padding:2px 8px;border-radius:6px;font-size:.9em;color:var(--color-primary-deep);font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace}
.prose-content pre{background:var(--color-primary-deep);color:#E9F0ED;padding:1.2rem 1.5rem;border-radius:14px;overflow-x:auto;margin:1.6rem 0;font-size:.92rem;line-height:1.7}
.prose-content pre code{background:transparent;color:inherit;padding:0}

/* Not Found */
.not-found{max-width:760px;margin:0 auto;padding:60px 32px;text-align:center;background:#fff;border:1px dashed var(--color-line);border-radius:var(--radius-2xl)}
.not-found .nf-icon{width:72px;height:72px;margin:0 auto 18px;border-radius:50%;background:var(--color-section-alt);display:flex;align-items:center;justify-content:center}
.not-found h2{font-size:1.4rem;font-weight:600;color:var(--color-ink);margin-bottom:10px}
.not-found p{color:var(--color-ink-soft);margin-bottom:24px}

/* Pager */
.post-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:900px;margin:0 auto 56px;padding:0 24px}
.pager-item{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--color-line);border-radius:var(--radius-lg);padding:20px 24px;transition:box-shadow var(--transition),border-color var(--transition),transform var(--transition)}
.pager-item:hover{border-color:var(--color-primary);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.pager-item.pager-next{align-items:flex-end;text-align:right}
.pager-label{font-size:.8rem;color:var(--color-ink-soft);display:flex;align-items:center;gap:6px}
.pager-label svg{width:14px;height:14px}
.pager-title{font-size:1rem;font-weight:600;color:var(--color-ink);transition:color var(--transition)}
.pager-item:hover .pager-title{color:var(--color-primary)}

/* Related */
.related-section{background:var(--color-section-alt);padding:64px 0;margin-top:10px}
.section-header{text-align:center;margin-bottom:40px}
.section-label{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:600;color:var(--color-primary);text-transform:uppercase;letter-spacing:.1em;margin-bottom:10px}
.section-label::before,.section-label::after{content:"";display:block;width:24px;height:2px;background:var(--color-primary);border-radius:2px;opacity:.4}
.section-header h2{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--color-ink);letter-spacing:-.01em}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:900px;margin:0 auto;padding:0 24px}
.related-card{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius-lg);overflow:hidden;transition:box-shadow var(--transition),transform var(--transition),border-color var(--transition)}
.related-card:hover{border-color:transparent;box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.related-card .rc-img{aspect-ratio:16/10;overflow:hidden;background:var(--color-section-alt)}
.related-card .rc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-card:hover .rc-img img{transform:scale(1.05)}
.related-card .rc-body{padding:18px 20px 22px}
.related-card .rc-title{font-size:1rem;font-weight:600;color:var(--color-ink);line-height:1.5;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:3em}
.related-card .rc-link{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;font-weight:600;color:var(--color-primary)}
.related-card .rc-link svg{width:14px;height:14px;transition:transform var(--transition)}
.related-card:hover .rc-link svg{transform:translateX(3px)}
.article-back-btn{text-align:center;padding:40px 24px 64px;max-width:900px;margin:0 auto}

/* CTA Band */
.cta-inline{max-width:900px;margin:0 auto;padding:0 24px 60px}
.cta-inner{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-deep));border-radius:var(--radius-2xl);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:24px;position:relative;overflow:hidden}
.cta-inner::before{content:"";position:absolute;top:-40px;right:60px;width:160px;height:160px;border-radius:50%;border:2px solid rgba(255,255,255,.12)}
.cta-inner::after{content:"";position:absolute;bottom:-60px;left:120px;width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.05)}
.cta-text h2{color:#fff;font-size:1.5rem;font-weight:700;margin-bottom:8px}
.cta-text p{color:rgba(255,255,255,.8);font-size:.95rem;max-width:420px}
.cta-inner .btn-primary{background:#fff;color:var(--color-primary-deep);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.cta-inner .btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.25)}

/* Footer */
.site-footer{background:linear-gradient(160deg,#0B3B3A,#16211F);color:rgba(255,255,255,.85);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo-text{font-size:1.2rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-text::before{content:"◈";color:var(--color-primary);font-size:1rem}
.footer-brand p{font-size:.92rem;color:rgba(255,255,255,.65);line-height:1.7;max-width:280px}
.footer-title{font-size:.95rem;font-weight:600;color:#fff;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--color-primary);border-radius:2px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.9rem;color:rgba(255,255,255,.65);transition:color var(--transition),padding-left var(--transition)}
.footer-links a:hover{color:var(--color-accent);padding-left:4px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:22px 0;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.7);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--color-accent)}

/* Back to top */
.back-top{position:fixed;right:24px;bottom:32px;z-index:50;width:46px;height:46px;border-radius:50%;background:#fff;box-shadow:0 6px 20px rgba(22,33,31,.15);display:flex;align-items:center;justify-content:center;color:var(--color-primary-deep);transition:transform var(--transition),box-shadow var(--transition),opacity var(--transition);opacity:.85}
.back-top:hover{transform:translateY(-4px);box-shadow:0 10px 28px rgba(22,33,31,.2);opacity:1}
.back-top svg{width:20px;height:20px}

/* Mobile Nav Panel */
@media (max-width:1023.98px){
.nav-links{position:fixed;top:76px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:16px 24px 24px;gap:4px;border-bottom:1px solid var(--color-line);box-shadow:0 16px 32px rgba(22,33,31,.1);transform:translateY(-16px);opacity:0;visibility:hidden;pointer-events:none;transition:transform .3s ease,opacity .3s ease,visibility .3s}
.nav-links.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}
.nav-link{display:flex;padding:14px 16px;font-size:1rem;border-radius:10px}
.nav-link::after{display:none}
.nav-link.is-active{background:rgba(14,159,139,.08)}
.nav-toggle{display:flex}
.btn-nav{display:none}
.btn-nav-mobile{display:inline-flex;margin-top:12px;justify-content:center;width:100%}
.logo-text{font-size:.95rem}
.nav-inner{gap:16px}
}
@media (max-width:767.98px){
.container{padding:0 16px}
.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
.related-grid{grid-template-columns:1fr;max-width:420px}
.post-pager{grid-template-columns:1fr}
.pager-item.pager-next{align-items:flex-start;text-align:left}
.cta-inner{flex-direction:column;padding:32px 28px;text-align:center}
.cta-text p{margin:0 auto}
.footer-bottom{flex-direction:column;text-align:center;justify-content:center}
.article-head h1{font-size:26px}
}
@media (max-width:640px){
.footer-grid{grid-template-columns:1fr}
.logo-text{font-size:.88rem}
.logo-mark{width:34px;height:34px}
}

/* Accessibility */
:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* roulang page: category1 */
:root {
            --color-primary: #0E9F8B;
            --color-primary-deep: #0B3B3A;
            --color-accent: #F59E0B;
            --color-accent-hover: #D97706;
            --color-bg: #F6F8F7;
            --color-bg-alt: #E9F0ED;
            --color-text: #16211F;
            --color-text-secondary: #5B6B66;
            --color-border: #D6DFDB;
            --color-white: #ffffff;
            --radius: 16px;
            --shadow-md: 0 8px 24px rgba(11, 59, 58, 0.08);
            --shadow-hover: 0 16px 36px rgba(11, 59, 58, 0.16);
            --transition: 0.3s ease;
            --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* 头部导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid transparent;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .site-header.is-scrolled {
            box-shadow: 0 6px 24px rgba(11, 59, 58, 0.08);
            border-color: var(--color-border);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            color: var(--color-text);
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-deep));
            color: #fff;
            border-radius: 12px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 15px;
            }
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            position: relative;
            padding: 8px 2px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: color 0.25s ease;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.is-active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-deep));
            color: #fff;
            padding: 10px 24px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 6px 16px rgba(14, 159, 139, 0.25);
            transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(14, 159, 139, 0.35);
            filter: brightness(1.05);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary .arrow {
            transition: transform 0.3s ease;
        }
        .btn-primary:hover .arrow {
            transform: translateX(4px);
        }
        .btn-nav-mobile {
            display: none;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: 0.3s ease;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .btn-nav {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                padding: 24px 20px 32px;
                gap: 8px;
                box-shadow: 0 20px 30px rgba(11, 59, 58, 0.1);
                border-radius: 0 0 20px 20px;
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: transform 0.35s ease, opacity 0.3s ease, visibility 0.3s ease;
            }
            .nav-links.is-open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links .nav-link {
                width: 100%;
                padding: 12px 8px;
                font-size: 16px;
                border-bottom: 1px solid #f0f3f2;
            }
            .nav-link.is-active::after {
                display: none;
            }
            .btn-nav-mobile {
                display: inline-flex;
                width: 100%;
                justify-content: center;
                margin-top: 12px;
            }
        }

        /* Hero 首屏 */
        .category-hero {
            position: relative;
            padding: 160px 0 90px;
            background: linear-gradient(100deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 248, 247, 0.92) 55%, rgba(14, 159, 139, 0.18) 100%),
                url('/assets/images/backpic/back-1.webp') no-repeat right center / 55% auto;
            border-bottom: 1px solid var(--color-border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 22px;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }
        .breadcrumb .sep {
            color: #b8c6c1;
        }
        .category-hero h1 {
            font-size: clamp(30px, 5vw, 48px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--color-text);
            max-width: 780px;
        }
        .hero-sub {
            margin-top: 18px;
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1.5px solid var(--color-primary);
            color: var(--color-primary);
            padding: 10px 24px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: background 0.25s ease, transform 0.3s ease, box-shadow 0.3s ease;
        }
        .btn-outline:hover {
            background: rgba(14, 159, 139, 0.06);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 159, 139, 0.12);
        }
        @media (max-width: 768px) {
            .category-hero {
                background: linear-gradient(160deg, #ffffff 0%, #eef6f3 100%);
                padding: 120px 0 60px;
            }
        }

        /* 内容介绍区 */
        .intro-section {
            padding: 90px 0 70px;
            background: var(--color-white);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 56px;
            align-items: center;
        }
        .intro-copy h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            position: relative;
            padding-left: 16px;
            line-height: 1.4;
        }
        .intro-copy h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 5px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
        }
        .intro-copy p {
            margin-bottom: 18px;
            color: var(--color-text-secondary);
            font-size: 16px;
            line-height: 1.9;
        }
        .intro-media img {
            width: 100%;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
        }
        @media (max-width: 900px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* 全宽配图 */
        .banner-image {
            line-height: 0;
            background: var(--color-primary-deep);
        }
        .banner-image img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
            opacity: 0.92;
        }

        /* 入口类型卡片 */
        .entry-section {
            padding: 90px 0 70px;
            background: var(--color-bg);
        }
        .entry-section h2,
        .faq-section h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-text);
            position: relative;
            padding-left: 16px;
            line-height: 1.4;
        }
        .entry-section h2::before,
        .faq-section h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 5px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
        }
        .section-sub {
            margin-top: 14px;
            color: var(--color-text-secondary);
            max-width: 680px;
            font-size: 15px;
        }
        .entry-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: 40px;
        }
        .entry-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 18px;
            padding: 32px;
            box-shadow: var(--shadow-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(14, 159, 139, 0.4);
        }
        .entry-card .icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg-alt);
            color: var(--color-primary);
            margin-bottom: 20px;
        }
        .entry-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--color-text);
        }
        .entry-card p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        @media (max-width: 640px) {
            .entry-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 流程区块 */
        .process-section {
            padding: 90px 0;
            background: linear-gradient(150deg, var(--color-primary-deep), #0f4a46);
            color: #fff;
        }
        .process-section h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #fff;
            position: relative;
            padding-left: 16px;
            line-height: 1.4;
        }
        .process-section h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 5px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--color-accent), #fff);
        }
        .process-sub {
            margin-top: 14px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            font-size: 15px;
        }
        .process-list {
            margin-top: 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .process-item {
            position: relative;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 18px;
            padding: 30px 24px;
            transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
        }
        .process-item:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
        }
        .process-item:not(:last-child)::after {
            content: "›";
            position: absolute;
            right: -22px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 28px;
            color: var(--color-accent);
            z-index: 2;
            font-weight: 300;
        }
        .process-item .step-num {
            font-size: 40px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }
        .process-item .step-num em {
            font-style: normal;
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.08em;
        }
        .process-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .process-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
        }
        @media (max-width: 900px) {
            .process-list {
                grid-template-columns: 1fr 1fr;
            }
            .process-item:not(:last-child)::after {
                display: none;
            }
        }
        @media (max-width: 560px) {
            .process-list {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-section {
            padding: 90px 0;
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 860px;
            margin: 40px auto 0;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item[open] {
            border-color: rgba(14, 159, 139, 0.35);
            box-shadow: var(--shadow-md);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--color-text);
            list-style: none;
            transition: color 0.25s ease;
            position: relative;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-primary);
        }
        .faq-item .q-mark {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-item summary .chev {
            margin-left: auto;
            width: 20px;
            height: 20px;
            color: var(--color-text-secondary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary .chev {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 16px 24px 22px 66px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.9;
            border-top: 1px dashed var(--color-border);
        }

        /* CTA 联系区块 */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-deep));
            color: #fff;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .cta-copy h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #fff;
            line-height: 1.4;
        }
        .cta-copy p {
            margin-top: 14px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.9;
        }
        .cta-form {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            padding: 32px;
        }
        .cta-form form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            background: #fff;
            border: 1px solid transparent;
            border-radius: 12px;
            padding: 13px 16px;
            font-size: 15px;
            color: var(--color-text);
            outline: none;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: #9ba9a4;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.18);
        }
        .cta-form textarea {
            resize: vertical;
            min-height: 100px;
        }
        .cta-form .btn-primary {
            background: #fff;
            color: var(--color-primary-deep);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            justify-content: center;
            width: 100%;
        }
        .cta-form .btn-primary:hover {
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
            background: #f0faf8;
        }
        @media (max-width: 900px) {
            .cta-inner {
                grid-template-columns: 1fr;
            }
        }

        /* 页脚 */
        .site-footer {
            background: linear-gradient(160deg, #0b3b3a, #16211f);
            color: rgba(255, 255, 255, 0.78);
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand .logo-text {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 28px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 返回顶部 */
        .back-top {
            position: fixed;
            right: 24px;
            bottom: 24px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: #fff;
            color: var(--color-primary-deep);
            box-shadow: 0 8px 24px rgba(11, 59, 58, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 90;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .back-top:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(11, 59, 58, 0.25);
        }
        @media (max-width: 560px) {
            .back-top {
                right: 16px;
                bottom: 16px;
                width: 42px;
                height: 42px;
            }
        }

/* roulang page: category2 */
:root {
    --color-primary: #0E9F8B;
    --color-primary-deep: #0B3B3A;
    --color-accent: #F59E0B;
    --color-accent-deep: #D97706;
    --color-bg: #F6F8F7;
    --color-mist: #E9F0ED;
    --color-ink: #16211F;
    --color-muted: #5B6B66;
    --color-line: #D6DFDB;
    --gradient-brand: linear-gradient(135deg, #0E9F8B, #0B3B3A);
    --gradient-deep: linear-gradient(160deg, #0B3B3A, #16211F);
    --radius-card: 16px;
    --radius-pill: 999px;
    --shadow-card: 0 4px 20px rgba(22, 33, 31, 0.06);
    --shadow-hover: 0 12px 32px rgba(14, 159, 139, 0.14);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-ink);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  }

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

  .container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  @media (min-width: 768px) {
    .container {
      padding-left: 32px;
      padding-right: 32px;
    }
  }

  .section {
    padding: 72px 0;
  }

  @media (min-width: 768px) {
    .section {
      padding: 96px 0;
    }
  }

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-label::before {
    content: "";
    width: 24px;
    height: 3px;
    border-radius: 4px;
    background: var(--gradient-brand);
  }

  .section-title {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--color-ink);
    margin-bottom: 16px;
  }

  .section-desc {
    font-size: 16px;
    color: var(--color-muted);
    max-width: 680px;
    line-height: 1.75;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--gradient-brand);
    color: #fff;
    border-radius: var(--radius-pill);
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(14, 159, 139, 0.22);
    transition: all 0.3s ease;
    white-space: nowrap;
  }

  .btn-primary:hover {
    box-shadow: 0 8px 24px rgba(14, 159, 139, 0.32);
    transform: translateY(-2px);
    color: #fff;
  }

  .btn-primary:focus-visible {
    outline: 3px solid rgba(245, 158, 11, 0.6);
    outline-offset: 2px;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius-pill);
    padding: 11px 28px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
    white-space: nowrap;
  }

  .btn-secondary:hover {
    background: rgba(14, 159, 139, 0.06);
    border-color: var(--color-primary-deep);
    color: var(--color-primary-deep);
    transform: translateY(-2px);
  }

  .btn-secondary:focus-visible {
    outline: 3px solid rgba(14, 159, 139, 0.5);
    outline-offset: 2px;
  }

  /* Header */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    z-index: 100;
    border-bottom: 1px solid rgba(214, 223, 219, 0.6);
    transition: box-shadow 0.3s ease, background 0.3s ease;
  }

  .site-header.is-scrolled {
    box-shadow: 0 4px 24px rgba(22, 33, 31, 0.08);
    background: rgba(255, 255, 255, 0.97);
  }

  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 24px;
  }

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

  .logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--gradient-brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(14, 159, 139, 0.25);
  }

  .logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--color-ink);
    white-space: nowrap;
  }

  .nav-links {
    display: none;
    align-items: center;
    gap: 28px;
  }

  @media (min-width: 1024px) {
    .nav-links {
      display: flex;
      margin: 0 auto;
    }
  }

  .nav-link {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-muted);
    padding: 8px 2px;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient-brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }

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

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

  .nav-link.is-active {
    color: var(--color-primary);
    font-weight: 600;
  }

  .nav-link.is-active::after {
    transform: scaleX(1);
  }

  .nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .btn-nav {
    display: none;
    padding: 10px 22px;
    font-size: 14px;
  }

  @media (min-width: 1024px) {
    .btn-nav {
      display: inline-flex;
    }
  }

  .btn-nav-mobile {
    margin-top: 16px;
    width: 100%;
  }

  @media (min-width: 1024px) {
    .btn-nav-mobile {
      display: none;
    }
  }

  .arrow {
    transition: transform 0.3s ease;
  }

  .btn-primary:hover .arrow {
    transform: translateX(3px);
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 8px;
    border-radius: 10px;
    background: var(--color-mist);
    transition: background 0.3s ease;
  }

  @media (min-width: 1024px) {
    .nav-toggle {
      display: none;
    }
  }

  .nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--color-ink);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
  }

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

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

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

  /* 移动端导航面板 */
  .mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 12px 32px rgba(22, 33, 31, 0.12);
    padding: 24px;
    z-index: 99;
    border-top: 1px solid var(--color-line);
  }

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

  .mobile-menu .nav-links-mobile {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .mobile-menu .nav-link {
    display: block;
    padding: 14px 12px;
    border-radius: 10px;
    font-size: 16px;
    border-bottom: 1px solid rgba(214, 223, 219, 0.4);
  }

  .mobile-menu .nav-link:hover {
    background: var(--color-mist);
  }

  .mobile-menu .nav-link.is-active {
    background: rgba(14, 159, 139, 0.08);
    color: var(--color-primary);
  }

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

  /* Hero */
  .page-hero {
    position: relative;
    margin-top: 70px;
    padding: 72px 0 64px;
    background: linear-gradient(135deg, #E9F0ED 0%, #F6F8F7 40%, #ffffff 100%);
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .page-hero {
      padding: 104px 0 80px;
    }
  }

  .page-hero::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -40px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14, 159, 139, 0.12), transparent 70%);
    pointer-events: none;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
  }

  @media (min-width: 992px) {
    .hero-grid {
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
    }
  }

  .hero-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: 20px;
    flex-wrap: wrap;
  }

  .hero-breadcrumb a {
    color: var(--color-muted);
  }

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

  .hero-breadcrumb .sep {
    color: #9BA8A3;
  }

  .hero-breadcrumb .current {
    color: var(--color-primary);
    font-weight: 500;
  }

  .hero-title {
    font-size: clamp(30px, 5vw, 46px);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--color-ink);
    margin-bottom: 18px;
  }

  .hero-title span {
    color: var(--color-primary);
    position: relative;
  }

  .hero-subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-muted);
    max-width: 540px;
    margin-bottom: 30px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 28px;
  }

  .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-pill);
    padding: 6px 14px;
    font-size: 13px;
    color: var(--color-muted);
    box-shadow: 0 2px 8px rgba(22, 33, 31, 0.04);
  }

  .meta-badge svg {
    color: var(--color-primary);
  }

  .hero-image-wrap {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(22, 33, 31, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.6);
  }

  .hero-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 280px;
    max-height: 420px;
  }

  .hero-image-overlay {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 14px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 8px 24px rgba(22, 33, 31, 0.12);
  }

  .hero-image-overlay .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10B981;
    flex-shrink: 0;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
  }

  .hero-image-overlay .text {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
  }

  /* 内容介绍区 */
  .intro-section {
    background: #fff;
  }

  .intro-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
  }

  @media (min-width: 992px) {
    .intro-grid {
      grid-template-columns: 1fr 1fr;
      gap: 64px;
    }
  }

  .intro-text p {
    font-size: 16px;
    line-height: 1.85;
    color: var(--color-muted);
    margin-bottom: 18px;
  }

  .intro-text p:last-child {
    margin-bottom: 0;
  }

  .intro-text strong {
    color: var(--color-ink);
    font-weight: 600;
  }

  .intro-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
  }

  @media (max-width: 420px) {
    .intro-points {
      grid-template-columns: 1fr;
    }
  }

  .intro-point {
    background: var(--color-bg);
    border-radius: 14px;
    padding: 16px;
    border: 1px solid var(--color-line);
  }

  .intro-point .icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(14, 159, 139, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
  }

  .intro-point h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 4px;
  }

  .intro-point p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-muted);
    margin-bottom: 0;
  }

  .intro-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-line);
  }

  .intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 260px;
  }

  /* 入口类型卡片 */
  .entry-section {
    background: var(--color-bg);
  }

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

  @media (min-width: 768px) {
    .entry-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (min-width: 1024px) {
    .entry-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .entry-card {
    background: #fff;
    border-radius: var(--radius-card);
    padding: 28px 24px;
    border: 1px solid rgba(214, 223, 219, 0.7);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
  }

  .entry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(14, 159, 139, 0.35);
  }

  .entry-card.featured {
    background: var(--gradient-brand);
    border-color: transparent;
    color: #fff;
  }

  .entry-card.featured .card-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
  }

  .entry-card.featured h3 {
    color: #fff;
  }

  .entry-card.featured p {
    color: rgba(255, 255, 255, 0.85);
  }

  .entry-card.featured .card-tag {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
  }

  .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(14, 159, 139, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    flex-shrink: 0;
  }

  .card-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(14, 159, 139, 0.08);
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 12px;
    align-self: flex-start;
  }

  .entry-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 8px;
    line-height: 1.4;
  }

  .entry-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-muted);
    flex-grow: 1;
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 16px;
  }

  .card-link:hover {
    color: var(--color-primary-deep);
    gap: 10px;
  }

  .card-link svg {
    transition: transform 0.3s ease;
  }

  .card-link:hover svg {
    transform: translateX(3px);
  }

  /* 全宽配图 */
  .banner-band {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 72px 0;
    border-radius: 0;
  }

  @media (min-width: 768px) {
    .banner-band {
      padding: 96px 0;
    }
  }

  .banner-band::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 59, 58, 0.88), rgba(11, 59, 58, 0.65), rgba(22, 33, 31, 0.55));
  }

  .banner-content {
    position: relative;
    z-index: 2;
    max-width: 680px;
  }

  .banner-content .section-title {
    color: #fff;
  }

  .banner-content .section-desc {
    color: rgba(255, 255, 255, 0.85);
  }

  .banner-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
  }

  .banner-tag {
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-pill);
    padding: 6px 16px;
    font-size: 13px;
    color: #fff;
    font-weight: 500;
    backdrop-filter: blur(4px);
  }

  /* 流程 */
  .process-section {
    background: #fff;
  }

  .process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 48px;
    position: relative;
  }

  @media (min-width: 768px) {
    .process-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
  }

  .process-step {
    position: relative;
    text-align: center;
    padding: 32px 20px;
    background: var(--color-bg);
    border-radius: var(--radius-card);
    border: 1px solid var(--color-line);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }

  .process-num {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    background: var(--gradient-brand);
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: 0 6px 16px rgba(14, 159, 139, 0.25);
    font-variant-numeric: tabular-nums;
  }

  .process-step h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 8px;
  }

  .process-step p {
    font-size: 14px;
    line-height: 1.65;
    color: var(--color-muted);
  }

  /* 数据条 */
  .stats-band {
    background: var(--gradient-brand);
    padding: 56px 0;
    position: relative;
    overflow: hidden;
  }

  .stats-band::before,
  .stats-band::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.12);
    pointer-events: none;
  }

  .stats-band::before {
    width: 180px;
    height: 180px;
    top: -60px;
    right: 60px;
  }

  .stats-band::after {
    width: 120px;
    height: 120px;
    bottom: -40px;
    left: 80px;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
    position: relative;
    z-index: 2;
  }

  @media (min-width: 1024px) {
    .stats-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .stat-item {
    text-align: center;
    color: #fff;
    padding: 20px 12px;
    border-right: 1px solid rgba(255, 255, 255, 0.15);
  }

  .stat-item:last-child {
    border-right: none;
  }

  @media (max-width: 767px) {
    .stat-item:nth-child(2n) {
      border-right: none;
    }
  }

  .stat-number {
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
  }

  .stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 6px;
  }

  /* FAQ */
  .faq-section {
    background: var(--color-bg);
  }

  .faq-list {
    max-width: 820px;
    margin: 40px auto 0;
  }

  .faq-item {
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--color-line);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
  }

  .faq-item:hover {
    border-color: rgba(14, 159, 139, 0.3);
  }

  .faq-item.is-open {
    box-shadow: var(--shadow-card);
    border-color: rgba(14, 159, 139, 0.35);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-ink);
    transition: color 0.3s ease;
  }

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

  .faq-q-mark {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(14, 159, 139, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
  }

  .faq-icon {
    margin-left: auto;
    color: var(--color-muted);
    transition: transform 0.3s ease, color 0.3s ease;
    flex-shrink: 0;
  }

  .faq-item.is-open .faq-icon {
    transform: rotate(180deg);
    color: var(--color-primary);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 24px 0 68px;
    font-size: 15px;
    line-height: 1.75;
    color: var(--color-muted);
  }

  .faq-item.is-open .faq-answer {
    max-height: 300px;
    padding-bottom: 22px;
  }

  /* CTA */
  .cta-section {
    background: linear-gradient(135deg, #0E9F8B, #0B3B3A);
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    top: -40%;
    right: -10%;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
  }

  .cta-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 2;
  }

  @media (min-width: 992px) {
    .cta-inner {
      grid-template-columns: 1.1fr 0.9fr;
      gap: 64px;
    }
  }

  .cta-title {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    margin-bottom: 12px;
  }

  .cta-desc {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 24px;
  }

  .cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .cta-btn-primary {
    background: #fff;
    color: var(--color-primary-deep);
    border-radius: var(--radius-pill);
    padding: 12px 30px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
    transition: all 0.3s ease;
  }

  .cta-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
    color: var(--color-primary);
  }

  .cta-btn-ghost {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-pill);
    padding: 11px 30px;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.3s ease;
  }

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

  .cta-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
  }

  .cta-card h4 {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
  }

  .cta-card p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
  }

  /* Footer */
  .site-footer {
    background: var(--gradient-deep);
    color: #E8EDEB;
    padding: 64px 0 28px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 48px;
  }

  @media (min-width: 640px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (min-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 48px;
    }
  }

  .footer-brand .logo-text {
    color: #fff;
    font-size: 20px;
    display: block;
    margin-bottom: 14px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.65);
    max-width: 280px;
  }

  .footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
  }

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

  .footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    transition: color 0.3s ease;
  }

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

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
  }

  @media (min-width: 640px) {
    .footer-bottom {
      flex-direction: row;
    }
  }

  .footer-bottom a {
    color: rgba(255, 255, 255, 0.45);
  }

  .footer-bottom a:hover {
    color: #fff;
  }

  /* 返回顶部 */
  .back-to-top {
    position: fixed;
    right: 20px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 4px 20px rgba(22, 33, 31, 0.16);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all 0.3s ease;
  }

  .back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .back-to-top:hover {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 6px 24px rgba(14, 159, 139, 0.35);
  }

  .back-to-top:focus-visible {
    outline: 3px solid rgba(245, 158, 11, 0.6);
    outline-offset: 2px;
  }

  /* 通用工具 */
  .text-brand {
    color: var(--color-primary);
  }

  .bg-mist {
    background: var(--color-mist);
  }