/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --color-primary: #12382F;
  --color-primary-light: #1E4D40;
  --color-primary-dark: #0C2A23;
  --color-accent: #B98A4E;
  --color-accent-light: #C99B5F;
  --color-bg: #F6F4EF;
  --color-white: #FFFFFF;
  --color-bg-alt: #EFF3EF;
  --color-text: #1A1A1A;
  --color-text-secondary: #5C5C5A;
  --color-text-muted: #99948C;
  --color-border: #E5E2DA;
  --color-input-border: #D8D4CB;
  --color-success: #2E7D5B;
  --color-warning: #C97B3D;
  --color-error: #A94442;
  --color-info: #3A6B8C;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --transition-base: 0.2s ease-out;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
  --space-section: 104px;
  --container-max: 1200px;
}

/* ============ Reset ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover {
  color: var(--color-primary-light);
}
img {
  max-width: 100%;
  display: block;
  object-fit: cover;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  outline: none;
  background: none;
}
ul, ol {
  list-style: none;
}

/* ============ 容器 ============ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 992px) {
  .container {
    padding: 0 20px;
  }
}
@media (max-width: 576px) {
  .container {
    padding: 0 16px;
  }
}

/* ============ 通用板块 ============ */
.section {
  padding: var(--space-section) 0;
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 24px;
}
.section-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.5px;
}
.section-desc {
  max-width: 420px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-title { font-size: 28px; }
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
}
.btn-primary:hover {
  background: var(--color-accent-light);
  color: #ffffff;
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-outline-dark {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-dark:hover {
  background: rgba(18, 56, 47, 0.06);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-dark:active {
  transform: translateY(1px);
}
.btn-white-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #ffffff;
}
.btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #ffffff;
  color: #ffffff;
}
.btn-lg {
  height: 48px;
  padding: 0 36px;
  font-size: 16px;
}
@media (max-width: 576px) {
  .btn-lg {
    height: 44px;
    padding: 0 24px;
    font-size: 15px;
  }
}

/* ============ 标签 Badge ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 14px;
  border-radius: var(--radius-lg);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.4px;
  background: rgba(18, 56, 47, 0.06);
  color: var(--color-primary);
  border: 1px solid rgba(18, 56, 47, 0.12);
}
.badge-accent {
  background: rgba(185, 138, 78, 0.12);
  color: #8A6232;
  border-color: rgba(185, 138, 78, 0.2);
}
.badge-light {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 239, 0.92);
  border-bottom: 1px solid rgba(229, 226, 218, 0.6);
  backdrop-filter: none;
  transition: background var(--transition-base);
}
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}
.logo {
  flex-shrink: 0;
}
.logo a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0;
}
.header-search {
  flex: 1;
  max-width: 640px;
  position: relative;
  margin: 0 auto;
}
.header-search input {
  width: 100%;
  height: 44px;
  padding: 0 48px 0 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-input-border);
  background: var(--color-white);
  font-size: 14px;
  color: var(--color-text);
  transition: all var(--transition-base);
}
.header-search input::placeholder {
  color: var(--color-text-muted);
}
.header-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(18, 56, 47, 0.15);
  width: calc(100% + 4px);
  margin-left: -2px;
}
.header-search .search-icon {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 15px;
  pointer-events: none;
  transition: color var(--transition-base);
}
.header-search input:focus ~ .search-icon {
  color: var(--color-primary);
}
.header-cta {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta .btn {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}
.header-cta .btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}
.header-cta .btn-ghost:hover {
  border-color: var(--color-primary);
}
.nav-main {
  border-top: 1px solid var(--color-border);
}
.nav-main .container {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-top: 0;
  padding-bottom: 0;
}
.nav-main a {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-base);
  position: relative;
}
.nav-main a:hover {
  color: var(--color-primary);
  background: rgba(18, 56, 47, 0.03);
}
.nav-main a.active {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-accent);
}
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 20px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}
.menu-toggle:hover {
  border-color: var(--color-primary);
}
@media (max-width: 992px) {
  .header-main {
    flex-wrap: wrap;
    gap: 12px;
  }
  .header-search {
    order: 3;
    max-width: 100%;
    flex-basis: 100%;
    margin: 0;
  }
  .header-search input:focus {
    width: 100%;
    margin-left: 0;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .header-cta .btn-ghost {
    display: none;
  }
  .nav-main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .nav-main.open {
    display: block;
  }
  .nav-main .container {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px;
  }
  .nav-main a {
    height: 44px;
    border-bottom: 1px solid var(--color-border);
    padding: 0 8px;
  }
  .nav-main a:last-child {
    border-bottom: none;
  }
  .nav-main a.active {
    border-bottom-color: transparent;
    background: rgba(18, 56, 47, 0.04);
  }
}
@media (max-width: 576px) {
  .logo a {
    font-size: 18px;
  }
  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }
  .header-cta .btn {
    padding: 0 16px;
    font-size: 13px;
  }
  .header-search input {
    height: 40px;
    font-size: 13px;
  }
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 560px;
  height: 90vh;
  max-height: 92vh;
  display: flex;
  align-items: center;
  background-color: var(--color-primary);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #12382F 0%, rgba(18, 56, 47, 0.82) 60%, rgba(18, 56, 47, 0.35) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 560px;
  padding: 40px 0;
}
.hero-badges {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.15;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 460px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.hero-metrics {
  display: flex;
  gap: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
}
.hero-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-metric .value {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-mono);
  line-height: 1.2;
}
.hero-metric .label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}
.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  letter-spacing: 2px;
  z-index: 1;
  transition: transform var(--transition-base);
  cursor: pointer;
}
.hero-scroll:hover {
  transform: translateX(-50%) translateY(4px);
  color: rgba(255, 255, 255, 0.9);
}
.hero-scroll .line {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.4);
  position: relative;
  overflow: hidden;
}
.hero-scroll .line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { top: -100%; }
  100% { top: 100%; }
}
@media (max-width: 768px) {
  .hero {
    min-height: 480px;
    height: auto;
    padding: 80px 0 60px;
  }
  .hero h1 {
    font-size: 32px;
    line-height: 1.2;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-metrics {
    gap: 24px;
    padding-top: 20px;
  }
  .hero-metric .value {
    font-size: 20px;
  }
}
@media (max-width: 576px) {
  .hero {
    padding: 60px 0 50px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero-sub {
    font-size: 14px;
    margin-bottom: 28px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-metrics {
    flex-wrap: wrap;
    gap: 16px 24px;
  }
  .hero-scroll {
    display: none;
  }
}

/* ============ 功能分组 ============ */
.features {
  background: var(--color-white);
}
.features-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
}
.feature-nav {
  border-right: 1px solid var(--color-border);
  padding-right: 24px;
}
.feature-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  border-left: 2px solid transparent;
  margin-bottom: 4px;
}
.feature-nav-item .num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
  margin-right: 12px;
}
.feature-nav-item .arrow {
  font-size: 16px;
  color: var(--color-accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: all var(--transition-base);
}
.feature-nav-item:hover {
  background: rgba(18, 56, 47, 0.03);
  color: var(--color-primary);
}
.feature-nav-item.active {
  background: rgba(18, 56, 47, 0.05);
  border-left-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
}
.feature-nav-item.active .arrow {
  opacity: 1;
  transform: translateX(0);
}
.feature-detail {
  padding: 8px 0;
}
.feature-panel {
  display: none;
}
.feature-panel.active {
  display: block;
  animation: fadeSlide 0.4s ease-out;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.feature-panel-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.feature-panel-header h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}
.feature-panel-header .badge {
  font-size: 12px;
}
.feature-panel-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 560px;
}
.feature-panel-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.feature-panel-pic {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-bg-alt);
}
.feature-panel-pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature-panel-pic .pic-overlay {
  position: absolute;
  left: 20px;
  bottom: 20px;
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  line-height: 1;
}
@media (max-width: 992px) {
  .features-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .feature-nav {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding-right: 0;
    padding-bottom: 8px;
    display: flex;
    overflow-x: auto;
    gap: 4px;
  }
  .feature-nav-item {
    flex-shrink: 0;
    padding: 12px 14px;
    border-left: none;
    border-bottom: 2px solid transparent;
    margin-bottom: 0;
    font-size: 14px;
  }
  .feature-nav-item .arrow {
    display: none;
  }
  .feature-nav-item.active {
    border-left: none;
    border-bottom-color: var(--color-accent);
  }
}

/* ============ 使用场景 ============ */
.scenarios {
  background: var(--color-bg);
}
.scenario-row {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
}
.scenario-row.reverse {
  grid-template-columns: 45% 55%;
}
.scenario-row.reverse .scenario-image {
  order: 2;
}
.scenario-row:last-child {
  margin-bottom: 0;
}
.scenario-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
}
.scenario-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease-out;
}
.scenario-image:hover img {
  transform: scale(1.02);
}
.scenario-content {
  padding: 16px 0;
}
.scenario-content .num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: inline-block;
}
.scenario-content h3 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 16px;
}
.scenario-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}
.scenario-content .link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
  padding-bottom: 2px;
}
.scenario-content .link-more:hover {
  border-bottom-color: var(--color-accent);
  color: var(--color-primary);
  gap: 12px;
}
.scenario-content .link-more .arrow-icon {
  transition: transform var(--transition-base);
}
.scenario-content .link-more:hover .arrow-icon {
  transform: translateX(4px);
}
@media (max-width: 992px) {
  .scenario-row,
  .scenario-row.reverse {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 56px;
  }
  .scenario-row.reverse .scenario-image {
    order: 0;
  }
  .scenario-image {
    aspect-ratio: 16/10;
  }
}

/* ============ 成功案例 ============ */
.cases {
  background: var(--color-white);
}
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 36px 40px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: 48px;
}
.case-metric {
  text-align: left;
  padding-right: 32px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}
.case-metric:last-child {
  border-right: none;
  padding-right: 0;
}
.case-metric .value {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-mono);
  line-height: 1.2;
  margin-bottom: 8px;
  display: inline-block;
}
.case-metric .suffix {
  font-size: 20px;
  color: var(--color-accent-light);
}
.case-metric .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}
.case-list {
  border-top: 1px solid var(--color-border);
}
.case-item {
  display: grid;
  grid-template-columns: 200px 100px 1fr 100px 32px;
  align-items: center;
  gap: 24px;
  padding: 28px 8px;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
  cursor: pointer;
}
.case-item:hover {
  background: rgba(18, 56, 47, 0.02);
  padding-left: 16px;
  padding-right: 0;
}
.case-item .client {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}
.case-item .industry {
  font-size: 13px;
  color: var(--color-text-muted);
  background: rgba(18, 56, 47, 0.05);
  padding: 4px 12px;
  border-radius: var(--radius-lg);
  display: inline-block;
  width: fit-content;
}
.case-item .result-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.case-item .result-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
  text-align: right;
}
.case-item .arrow-link {
  color: var(--color-accent);
  font-size: 18px;
  transition: transform var(--transition-base);
}
.case-item:hover .arrow-link {
  transform: translateX(4px);
}
@media (max-width: 992px) {
  .case-metrics {
    grid-template-columns: repeat(3, 1fr);
    padding: 28px 24px;
    gap: 16px;
  }
  .case-metric .value {
    font-size: 30px;
  }
  .case-metric .suffix {
    font-size: 16px;
  }
  .case-item {
    grid-template-columns: 150px 80px 1fr;
    gap: 16px;
    padding: 20px 4px;
  }
  .case-item .result-value {
    display: none;
  }
  .case-item .arrow-link {
    display: none;
  }
}
@media (max-width: 768px) {
  .case-metrics {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .case-metric {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-right: 0;
    padding-bottom: 20px;
  }
  .case-metric:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .case-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px 4px;
  }
  .case-item .industry {
    width: fit-content;
  }
}

/* ============ 最新资讯 ============ */
.news-section {
  background: var(--color-bg);
}
.news-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
}
.news-head-actions a {
  color: var(--color-primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-list {
  border-top: 1px solid var(--color-border);
}
.news-card {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 24px 8px;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
  border-radius: var(--radius-sm);
}
.news-card:hover {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  padding-left: 16px;
  padding-right: 4px;
}
.news-thumb {
  width: 120px;
  height: 90px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-alt);
  flex-shrink: 0;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-body {
  min-width: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}
.news-meta .tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(185, 138, 78, 0.1);
  padding: 2px 10px;
  border-radius: var(--radius-lg);
  letter-spacing: 0.3px;
}
.news-meta .time {
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.news-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-base);
}
.news-card:hover .news-title {
  color: var(--color-primary);
}
.news-summary {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-time-col {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.news-empty {
  border: 1px dashed var(--color-input-border);
  border-radius: var(--radius-md);
  padding: 64px 24px;
  text-align: center;
  background: var(--color-white);
}
.news-empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 50%;
  border: 1px dashed var(--color-input-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 22px;
}
.news-empty p {
  font-size: 14px;
  color: var(--color-text-muted);
}
.news-empty-sub {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 6px;
}
@media (max-width: 768px) {
  .news-card {
    grid-template-columns: 88px 1fr;
    gap: 16px;
    padding: 20px 4px;
  }
  .news-thumb {
    width: 88px;
    height: 72px;
  }
  .news-summary {
    display: none;
  }
  .news-time-col {
    display: none;
  }
  .news-title {
    font-size: 15px;
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }
}

/* ============ 价格 ============ */
.pricing {
  background: var(--color-white);
}
.pricing-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 40px;
}
.pricing-toggle .toggle-btn {
  height: 38px;
  padding: 0 20px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-base);
}
.pricing-toggle .toggle-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}
.pricing-toggle .toggle-save {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 500;
  background: rgba(185, 138, 78, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-lg);
}
.pricing-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.plan-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  position: relative;
  background: var(--color-white);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}
.plan-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(18, 56, 47, 0.25);
}
.plan-card.featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-md);
}
.plan-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-lg);
  white-space: nowrap;
  letter-spacing: 0.4px;
}
.plan-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}
.plan-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
}
.plan-price .currency {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}
.plan-price .amount {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-mono);
  line-height: 1;
}
.plan-price .period {
  font-size: 14px;
  color: var(--color-text-muted);
}
.plan-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}
.plan-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.plan-features li .check-icon {
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
  font-size: 13px;
  margin-top: 3px;
}
.plan-features li.disabled {
  color: var(--color-text-muted);
  opacity: 0.6;
}
.plan-features li.disabled .check-icon {
  color: var(--color-text-muted);
}
.plan-cta {
  width: 100%;
}
.pricing-note {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}
@media (max-width: 992px) {
  .pricing-layout {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
    gap: 32px;
  }
  .plan-card.featured {
    transform: scale(1);
  }
}
@media (max-width: 576px) {
  .pricing-toggle {
    flex-wrap: wrap;
  }
  .plan-card {
    padding: 28px 20px;
  }
  .plan-price .amount {
    font-size: 32px;
  }
}

/* ============ FAQ ============ */
.faq {
  background: var(--color-bg);
}
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}
.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  padding: 4px 0;
  transition: color var(--transition-base);
  background: none;
  border: none;
}
.faq-question:hover {
  color: var(--color-primary);
}
.faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform 0.3s ease-out;
  line-height: 1;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease-out;
}
.faq-answer-inner {
  padding: 16px 0 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}
@media (max-width: 576px) {
  .faq-question {
    font-size: 15px;
  }
}

/* ============ CTA ============ */
.cta-section {
  background: var(--color-primary);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-content {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  color: #ffffff;
}
.cta-content h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.cta-content p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
@media (max-width: 576px) {
  .cta-section {
    padding: 56px 0;
  }
  .cta-content h2 {
    font-size: 24px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--color-primary-dark);
  color: var(--color-text);
  padding: 64px 0 0;
}
.footer-layout {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo a {
  color: #ffffff;
  font-size: 20px;
  font-weight: 700;
}
.footer-brand .logo-icon {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
  max-width: 260px;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 20px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}
.footer-col .contact-item {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-base);
}
.footer-bottom a:hover {
  color: var(--color-accent);
}
@media (max-width: 992px) {
  .footer-layout {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 576px) {
  .footer-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
}

/* ============ 通用动画 ============ */
@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* 禁用状态 */
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* roulang page: article */
/* ============ 设计变量与基础 Reset ============ */
:root {
  --color-primary: #12382F;
  --color-primary-light: #1E4D40;
  --color-accent: #B98A4E;
  --color-bg: #F6F4EF;
  --color-white: #FFFFFF;
  --color-gray-soft: #EFF3EF;
  --color-text: #1A1A1A;
  --color-text-secondary: #5C5C5A;
  --color-text-muted: #99948C;
  --color-border: #E5E2DA;
  --color-border-input: #D8D4CB;
  --color-quote-bg: #F3F1EA;
  --color-code-bg: #1E1E1E;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.06);
  --space-section: 96px;
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Courier New", monospace;
}

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

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

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out, box-shadow 0.2s ease-out;
}

ul, ol {
  list-style: none;
}

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

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

/* ============ 按钮与标签 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s ease-out;
  vertical-align: middle;
}

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

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

.btn-primary:active {
  transform: translateY(1px);
}

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

.btn-accent:hover {
  background-color: #C79B62;
}

.btn-accent:active {
  transform: translateY(1px);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.6);
}

.btn-outline-white:hover {
  background-color: rgba(255,255,255,0.12);
  border-color: var(--color-white);
}

.btn-outline-white:active {
  transform: translateY(1px);
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
}

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

.tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.4px;
  background-color: var(--color-gray-soft);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.tag-accent {
  background-color: rgba(185,138,78,0.12);
  border-color: rgba(185,138,78,0.3);
  color: #8A6434;
}

/* ============ 站点头部 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(246,244,239,0.92);
  border-bottom: 1px solid var(--color-border);
}

.header-top {
  border-bottom: 1px solid var(--color-border);
}

.header-top-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 72px;
}

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

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.logo span:last-child {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.5px;
}

.logo:hover .logo-icon {
  background-color: var(--color-primary-light);
}

.header-search {
  flex: 1 1 auto;
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}

.search-svg {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  transition: color 0.2s ease-out;
  pointer-events: none;
}

.header-search input {
  width: 100%;
  height: 44px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-input);
  background-color: var(--color-white);
  padding: 0 48px 0 46px;
  font-size: 14px;
  color: var(--color-text);
  transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
}

.header-search input::placeholder {
  color: var(--color-text-muted);
}

.header-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(18,56,47,0.15);
}

.header-search input:focus + .search-svg,
.header-search:focus-within .search-svg {
  color: var(--color-primary);
}

.header-cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.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);
}

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

.nav-main .container {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-main .container::-webkit-scrollbar {
  display: none;
}

.nav-main a {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: color 0.2s ease-out, background-color 0.2s ease-out;
}

.nav-main a:hover {
  color: var(--color-primary);
  background-color: rgba(18,56,47,0.06);
}

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

.nav-main a.active::after {
  content: "";
  display: block;
  height: 2px;
  background-color: var(--color-accent);
  margin-top: -2px;
  border-radius: 2px;
}

/* ============ 面包屑 ============ */
.breadcrumb-wrap {
  padding: 20px 0 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
}

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

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

.breadcrumb .sep {
  color: var(--color-border);
}

.breadcrumb .current {
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}

/* ============ 文章阅读器 ============ */
.article-page {
  padding-bottom: var(--space-section);
}

.article-wrap {
  padding-top: 40px;
  padding-bottom: 40px;
}

.article-main {
  max-width: 720px;
  margin: 0 auto;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 56px 48px 48px;
}

.article-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 32px;
}

.article-header h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.article-excerpt {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.meta-category {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-primary);
  font-weight: 500;
}

.meta-divider {
  width: 1px;
  height: 14px;
  background-color: var(--color-border);
}

.meta-date {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* 正文阅读区 */
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
  word-break: break-word;
}

.article-content > * + * {
  margin-top: 20px;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  margin-top: 56px;
  margin-bottom: 16px;
  color: var(--color-text);
}

.article-content h3 {
  font-size: 21px;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--color-text);
}

.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 8px;
}

.article-content p {
  margin-bottom: 20px;
  color: var(--color-text);
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.article-content a:hover {
  text-decoration-color: var(--color-accent);
  color: var(--color-primary-light);
}

.article-content img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 32px 0;
}

.article-content blockquote {
  border-left: 2px solid var(--color-primary);
  background-color: var(--color-quote-bg);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin: 28px 0;
}

.article-content blockquote p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

.article-content pre {
  background-color: var(--color-code-bg);
  color: #D6DED9;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: auto;
  margin: 28px 0;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 14px;
  background-color: rgba(18,56,47,0.08);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-primary);
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  border-radius: 0;
}

.article-content ul,
.article-content ol {
  margin: 20px 0;
  padding-left: 24px;
}

.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
  color: var(--color-text);
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
  color: var(--color-text);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}

.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  text-align: left;
}

.article-content th {
  background-color: var(--color-gray-soft);
  font-weight: 600;
  color: var(--color-text);
}

/* 文章底部导航 */
.article-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

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

.article-share {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.article-share a {
  color: var(--color-text-muted);
}

.article-share a:hover {
  color: var(--color-primary);
}

/* 空态 */
.article-empty {
  max-width: 720px;
  margin: 0 auto;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 80px 48px;
  text-align: center;
}

.empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 24px;
  border-radius: 50%;
  border: 2px solid rgba(18,56,47,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.article-empty h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.article-empty p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

/* ============ 相关推荐 ============ */
.related-section {
  padding: 72px 0 48px;
}

.section-title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 40px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 1px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 960px;
}

.related-card {
  display: flex;
  gap: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out, transform 0.2s ease-out;
}

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

.related-thumb {
  flex-shrink: 0;
  width: 128px;
  height: 96px;
  border-radius: 6px;
  overflow: hidden;
}

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

.related-card:hover .related-thumb img {
  transform: scale(1.04);
}

.related-body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
}

.related-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.related-tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.4px;
}

.related-time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-muted);
}

.related-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card:hover .related-body h3 {
  color: var(--color-primary);
}

.related-body p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.related-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ============ FAQ 手风琴 ============ */
.faq-section {
  padding: 72px 0;
}

.faq-section .container {
  max-width: 960px;
}

.faq-list {
  max-width: 800px;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 22px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  transition: color 0.2s ease-out;
}

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

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-text-muted);
  transition: transform 0.25s ease-out, border-color 0.25s ease-out, color 0.25s ease-out;
}

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

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

.faq-answer-inner {
  padding: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 320px;
}

/* ============ CTA 区 ============ */
.cta-section {
  background-color: var(--color-primary);
  background-image: linear-gradient(135deg, rgba(0,0,0,0.1) 25%, transparent 25%),
    linear-gradient(225deg, rgba(0,0,0,0.05) 25%, transparent 25%);
  background-size: 40px 40px;
  color: var(--color-white);
  padding: 88px 0;
}

.cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}

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

/* ============ 页脚 ============ */
.site-footer {
  background-color: var(--color-primary);
  color: #D6DED9;
  padding: 72px 0 0;
}

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

.footer-brand .logo span:last-child {
  color: var(--color-white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(214,222,217,0.75);
  margin-top: 16px;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(214,222,217,0.6);
  margin-bottom: 20px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(214,222,217,0.85);
  transition: color 0.2s ease-out;
}

.footer-col ul li a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(214,222,217,0.6);
}

/* ============ 响应式断点 ============ */
@media (max-width: 992px) {
  :root {
    --space-section: 64px;
  }

  .header-top-inner {
    height: 60px;
    gap: 16px;
  }

  .header-cta {
    display: none;
  }

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

  .header-search {
    order: 10;
    flex-basis: 100%;
    max-width: none;
    padding: 0 0 10px;
  }

  .header-top-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 8px 0 0;
  }

  .nav-main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-hover);
  }

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

  .nav-main .container {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: auto;
    padding: 8px 24px 16px;
    overflow: visible;
  }

  .nav-main a {
    height: 44px;
    padding: 0 8px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

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

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

  .article-main {
    padding: 40px 28px;
  }

  .article-header h1 {
    font-size: 32px;
  }

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

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

@media (max-width: 768px) {
  .article-header h1 {
    font-size: 28px;
  }

  .article-main {
    padding: 32px 20px;
  }

  .article-content h2 {
    font-size: 22px;
  }

  .article-content h3 {
    font-size: 18px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .cta-inner h2 {
    font-size: 26px;
  }

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

@media (max-width: 576px) {
  .header-search input {
    height: 40px;
  }

  .breadcrumb-wrap {
    padding-top: 12px;
  }

  .breadcrumb .current {
    max-width: 180px;
  }

  .article-main {
    padding: 24px 16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .article-header h1 {
    font-size: 24px;
    line-height: 1.35;
  }

  .article-excerpt {
    font-size: 14px;
    -webkit-line-clamp: 3;
  }

  .article-meta {
    gap: 10px;
  }

  .related-card {
    flex-direction: column;
  }

  .related-thumb {
    width: 100%;
    height: 140px;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 4px;
  }

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

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

/* roulang page: category1 */
:root {
  --color-primary: #12382F;
  --color-primary-light: #1E4D40;
  --color-primary-pale: rgba(18,56,47,0.06);
  --color-accent: #B98A4E;
  --color-accent-light: #C99A5F;
  --color-bg: #F6F4EF;
  --color-white: #FFFFFF;
  --color-bg-soft: #EFF3EF;
  --color-text: #1A1A1A;
  --color-text-secondary: #5C5C5A;
  --color-text-muted: #99948C;
  --color-border: #E5E2DA;
  --color-border-input: #D8D4CB;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
  --space-section: 96px;
  --max-width: 1200px;
}
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; object-fit: cover; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease-out; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section + .section { padding-top: 0; }
.section-header { display: flex; align-items: baseline; gap: 16px; margin-bottom: 48px; }
.section-index { font-size: 13px; font-weight: 500; letter-spacing: 0.4px; color: var(--color-accent); white-space: nowrap; }
.section-title { font-size: 32px; font-weight: 700; line-height: 1.25; color: var(--color-text); }
.section-caption { max-width: 720px; color: var(--color-text-secondary); line-height: 1.8; margin-top: 16px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background 0.2s ease-out, border-color 0.2s ease-out, color 0.2s ease-out, transform 0.2s ease-out;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-light); }
.btn-primary:active { transform: translateY(1px); }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: var(--color-accent-light); }
.btn-accent:active { transform: translateY(1px); }
.btn-outline { border-color: rgba(255,255,255,0.7); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-outline-dark { border-color: var(--color-primary); color: var(--color-primary); background: transparent; }
.btn-outline-dark:hover { border-color: var(--color-primary); background: var(--color-primary-pale); }
.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }
.badge {
  display: inline-block;
  height: 26px;
  line-height: 26px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.4px;
  color: var(--color-text-secondary);
  background: var(--color-white);
}
.badge-primary { border-color: var(--color-primary); color: var(--color-primary); background: rgba(18,56,47,0.04); }
.badge-accent { border-color: var(--color-accent); color: #8A6534; background: rgba(185,138,78,0.08); }
.tag {
  display: inline-block;
  height: 22px;
  line-height: 22px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 239, 0.92);
  border-bottom: 1px solid var(--color-border);
}
.header-top { padding: 14px 0; }
.header-top-inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
.logo { display: inline-flex; align-items: center; }
.logo a { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; color: var(--color-primary); line-height: 1.2; }
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.header-search { max-width: 640px; width: 100%; justify-self: center; }
.header-search form { position: relative; }
.search-icon { position: absolute; top: 50%; left: 16px; transform: translateY(-50%); width: 18px; height: 18px; color: var(--color-text-muted); pointer-events: none; transition: color 0.2s ease-out; }
.header-search input {
  width: 100%;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--color-border-input);
  background: var(--color-white);
  padding: 0 46px 0 46px;
  font-size: 14px;
  color: var(--color-text);
  transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out, width 0.2s ease-out;
}
.header-search input::placeholder { color: var(--color-text-muted); }
.header-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(18,56,47,0.2);
  width: calc(100% + 4px);
}
.header-search input:focus + .search-icon,
.header-search input:focus ~ .search-icon { color: var(--color-primary); }
.header-cta { justify-self: end; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px;
}
.nav-toggle span { display: block; height: 2px; background: var(--color-primary); border-radius: 2px; }
.nav-toggle:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.nav-main { border-top: 1px solid var(--color-border); background: var(--color-white); }
.nav-main .container { display: flex; align-items: center; gap: 4px; min-height: 48px; }
.nav-main a {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease-out, border-color 0.2s ease-out, background 0.2s ease-out;
}
.nav-main a:hover { color: var(--color-primary); background: var(--color-primary-pale); }
.nav-main a.active { color: var(--color-primary); border-bottom-color: var(--color-primary); font-weight: 600; }

.category-hero {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, #12382F 0%, rgba(18,56,47,0.82) 60%, rgba(18,56,47,0.35) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  padding: 72px 0;
}
.breadcrumbs { display: flex; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 24px; }
.breadcrumbs a:hover { color: #fff; }
.category-hero h1 { font-size: 52px; font-weight: 700; line-height: 1.15; margin-bottom: 20px; color: #fff; }
.category-hero .lead { font-size: 18px; max-width: 620px; color: rgba(255,255,255,0.85); line-height: 1.8; margin-bottom: 32px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.hero-badges .badge { border-color: rgba(255,255,255,0.25); color: #fff; background: rgba(255,255,255,0.08); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.stat-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding: 32px;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}
.stat-item { text-align: left; border-right: 1px solid var(--color-border); padding-right: 24px; }
.stat-item:last-child { border-right: none; padding-right: 0; }
.stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  margin-bottom: 4px;
}
.stat-label { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; }

.overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.overview-copy p { color: var(--color-text-secondary); margin-bottom: 16px; line-height: 1.8; }
.overview-list { margin-top: 20px; }
.overview-list li { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-bottom: 1px dashed var(--color-border); font-size: 15px; color: var(--color-text); }
.overview-list li::before { content: ""; flex: 0 0 6px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); margin-top: 10px; }
.overview-visual img { width: 100%; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }

.module-list { display: flex; flex-direction: column; gap: 16px; }
.module-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 200px;
  align-items: center;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 24px 16px 16px;
  transition: border-color 0.2s ease-out, transform 0.2s ease-out, box-shadow 0.2s ease-out;
}
.module-row:hover { transform: translateY(-2px); border-color: rgba(18,56,47,0.4); box-shadow: var(--shadow-md); }
.module-thumb { width: 140px; height: 90px; border-radius: 6px; overflow: hidden; }
.module-thumb img { width: 100%; height: 100%; }
.module-info h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.module-info p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }
.module-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

.table-compare {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.table-head {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  background: var(--color-primary);
  color: #fff;
}
.table-head > div { padding: 18px 24px; font-size: 15px; font-weight: 600; position: relative; }
.table-head .col-plan { text-align: center; }
.table-head .col-plan.featured { background: rgba(185,138,78,0.28); }
.table-head .pop-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 999px;
  letter-spacing: 0.4px;
}
.table-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  border-top: 1px solid var(--color-border);
}
.table-row > div { padding: 16px 24px; font-size: 14px; color: var(--color-text); }
.table-row .col-plan { text-align: center; color: var(--color-text-secondary); }
.table-row .col-plan.featured { background: rgba(185,138,78,0.05); color: var(--color-primary); font-weight: 600; }
.table-row:nth-child(even) { background: rgba(239,243,239,0.4); }

.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
  transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out, transform 0.2s ease-out;
}
.process-step:hover { border-color: rgba(18,56,47,0.4); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.process-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  font-family: "Inter", sans-serif;
  font-variant-numeric: tabular-nums;
}
.process-step h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.process-step p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  transition: color 0.2s ease-out;
}
.faq-question:hover { color: var(--color-primary); }
.faq-icon {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: transform 0.25s ease-out, color 0.2s ease-out, border-color 0.2s ease-out;
  line-height: 1;
}
.faq-item.open .faq-icon { transform: rotate(45deg); color: var(--color-primary); border-color: var(--color-primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease-out;
}
.faq-answer-inner { padding: 0 0 24px; font-size: 15px; color: var(--color-text-secondary); line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 320px; }

.cta-strip {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-strip h2 { font-size: 28px; color: #fff; font-weight: 700; margin-bottom: 8px; line-height: 1.3; }
.cta-strip p { color: rgba(255,255,255,0.8); font-size: 15px; }
.cta-strip .cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.site-footer { background: var(--color-primary); color: #D6DED9; padding-top: 72px; }
.footer-layout { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo a { color: #fff; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.8; margin-top: 16px; }
.footer-col h4 {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: #D6DED9; transition: color 0.2s ease-out; }
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
.footer-bottom p { line-height: 1.6; }

.animate-up {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-up.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 992px) {
  :root { --space-section: 72px; }
  .header-top-inner { grid-template-columns: auto 1fr; }
  .header-search { grid-column: 1 / -1; grid-row: 2; justify-self: stretch; max-width: none; }
  .header-search input:focus { width: 100%; }
  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; justify-self: end; }
  .nav-main { display: none; }
  .header-top.open .nav-main { display: block; }
  .header-top.open .header-cta { display: inline-flex; grid-column: 1 / -1; justify-self: start; }
  .header-top.open .header-search { display: block; }
  .overview-grid { grid-template-columns: 1fr; gap: 40px; }
  .module-row { grid-template-columns: 120px minmax(0, 1fr); }
  .module-thumb { width: 100px; height: 68px; }
  .module-tags { grid-column: 2; justify-content: flex-start; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .table-head, .table-row { grid-template-columns: 1.2fr 1fr 1fr 1fr; }
  .stat-bar { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-item { border-right: none; padding-right: 0; border-bottom: 1px solid var(--color-border); padding-bottom: 16px; }
  .stat-item:nth-child(3), .stat-item:nth-child(4) { border-bottom: none; }
  .cat-hero-title h1 { font-size: 40px; }
}

@media (max-width: 768px) {
  .category-hero { min-height: 300px; padding: 56px 0; }
  .category-hero h1 { font-size: 34px; }
  .category-hero .lead { font-size: 16px; }
  .section-title { font-size: 26px; }
  .cta-strip { padding: 36px 24px; }
}

@media (max-width: 576px) {
  :root { --space-section: 56px; }
  .container { padding: 0 16px; }
  .nav-main { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; border-top: 1px solid var(--color-border); }
  .nav-main::-webkit-scrollbar { display: none; }
  .nav-main .container { display: flex; flex-wrap: nowrap; width: max-content; min-width: 100%; padding: 0 16px; }
  .category-hero h1 { font-size: 30px; }
  .hero-badges { gap: 8px; }
  .overview-grid { gap: 28px; }
  .stat-bar { grid-template-columns: 1fr; }
  .stat-item { border-right: none; padding-right: 0; border-bottom: 1px solid var(--color-border); padding-bottom: 16px; }
  .stat-item:last-child { border-bottom: none; }
  .stat-num { font-size: 28px; }
  .module-row { grid-template-columns: 1fr; gap: 14px; }
  .module-thumb { width: 100%; height: 120px; }
  .module-thumb img { border-radius: 6px; }
  .module-tags { justify-content: flex-start; }
  .process-grid { grid-template-columns: 1fr; }
  .table-compare { overflow-x: auto; border-radius: var(--radius-md); }
  .table-head, .table-row { min-width: 640px; }
  .footer-layout { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; }
  .cta-strip { flex-direction: column; align-items: flex-start; }
}

/* roulang page: category3 */
/* ============================================================
   pg官网平台 · 服务与支持 | 完整设计系统
   ============================================================ */
:root {
  --color-primary: #12382F;
  --color-primary-light: #1E4D40;
  --color-primary-dark: #0D2B24;
  --color-accent: #B98A4E;
  --color-accent-light: #C99B5E;
  --color-bg: #F6F4EF;
  --color-white: #FFFFFF;
  --color-gray-light: #EFF3EF;
  --color-text: #1A1A1A;
  --color-text-secondary: #5C5C5A;
  --color-text-muted: #99948C;
  --color-border: #E5E2DA;
  --color-border-input: #D8D4CB;
  --color-success: #2E7D5B;
  --color-info: #3A6B8C;
  --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Inter, "Helvetica Neue", Arial, sans-serif;
  --font-size-hero: clamp(32px, 5vw, 52px);
  --font-size-section: clamp(28px, 3.2vw, 40px);
  --font-size-card-title: clamp(18px, 2vw, 22px);
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-tag: 12px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.06);
  --space-section: 96px;
  --space-section-mobile: 64px;
  --container-max: 1200px;
  --transition: 0.2s ease-out;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

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

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

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

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.1s ease-out, box-shadow var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(18, 56, 47, 0.25);
}

.btn-primary:active {
  background: var(--color-primary-dark);
  transform: translateY(1px);
}

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

.btn-accent:hover {
  background: var(--color-accent-light);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(185, 138, 78, 0.3);
}

.btn-accent:active {
  transform: translateY(1px);
}

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: var(--color-white);
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
}

.btn-outline-light:active {
  transform: translateY(1px);
}

.btn-sm {
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ============================================================
   Header / 导航
   ============================================================ */
.site-header {
  background: rgba(246, 244, 239, 0.96);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header.scrolled {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.header-top {
  padding: 12px 0;
}

.header-top-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
}

.logo span:last-child {
  font-weight: 700;
  font-size: 20px;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.header-search {
  flex: 1;
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
}

.header-search .search-icon {
  position: absolute;
  left: 18px;
  color: var(--color-text-muted);
  display: flex;
  pointer-events: none;
  z-index: 2;
  transition: color var(--transition);
}

.header-search input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-pill);
  padding: 0 20px 0 46px;
  background: var(--color-white);
  font-size: 14px;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
  outline: none;
}

.header-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(18, 56, 47, 0.16);
}

.header-search input:focus + .search-icon,
.header-search:focus-within .search-icon {
  color: var(--color-primary);
}

.header-search input::placeholder {
  color: var(--color-text-muted);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-gray-light);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle:hover {
  background: var(--color-border);
}

.nav-main {
  border-top: 1px solid var(--color-border);
  background: var(--color-white);
}

.nav-main .container {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-main .container::-webkit-scrollbar {
  display: none;
}

.nav-main a {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.nav-main a:hover {
  color: var(--color-primary);
  background: rgba(18, 56, 47, 0.04);
}

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

/* ============================================================
   Hero / 分类横幅
   ============================================================ */
.category-hero {
  position: relative;
  background: var(--color-primary);
  min-height: 360px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-primary) 0%, rgba(18, 56, 47, 0.82) 60%, rgba(18, 56, 47, 0.45) 100%);
  z-index: 1;
}

.category-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}

.category-hero .hero-content {
  position: relative;
  z-index: 2;
  padding: 64px 0;
  max-width: 680px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
}

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

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.4);
}

.category-hero h1 {
  font-size: var(--font-size-hero);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-white);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.category-hero .hero-subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
}

.hero-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-meta-badges .badge {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: transform var(--transition);
}

.hero-scroll:hover {
  transform: translateX(-50%) translateY(4px);
  color: rgba(255, 255, 255, 0.9);
}

.hero-scroll .line {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.4);
}

.hero-scroll .arrow {
  font-size: 12px;
}

/* ============================================================
   通用 Section
   ============================================================ */
.section {
  padding: var(--space-section) 0;
}

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

.section-alt2 {
  background: var(--color-gray-light);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.section-header .section-index {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 2px;
  display: block;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-header h2 {
  font-size: var(--font-size-section);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

.section-header .section-desc {
  max-width: 420px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================================
   服务范围卡片
   ============================================================ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
  transform: translateY(-2px);
  border-color: rgba(18, 56, 47, 0.4);
  box-shadow: var(--shadow-hover);
}

.service-card .card-img {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--color-gray-light);
}

.service-card .card-img img {
  width: 100%;
  height: 100%;
  transition: transform 0.4s ease-out;
}

.service-card:hover .card-img img {
  transform: scale(1.04);
}

.service-card .card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(18, 56, 47, 0.35));
  pointer-events: none;
}

.service-card .card-num {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--color-primary);
  color: var(--color-accent);
  font-size: 22px;
  font-weight: 800;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  z-index: 2;
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
}

.service-card .card-body {
  padding: 24px;
}

.service-card h3 {
  font-size: var(--font-size-card-title);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}

.service-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================================
   标签
   ============================================================ */
.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-gray-light);
  border: 1px solid var(--color-border);
  letter-spacing: 0.4px;
}

.tag-accent {
  background: rgba(185, 138, 78, 0.1);
  color: var(--color-accent);
  border-color: rgba(185, 138, 78, 0.25);
}

.tag-primary {
  background: rgba(18, 56, 47, 0.08);
  color: var(--color-primary);
  border-color: rgba(18, 56, 47, 0.2);
}

/* ============================================================
   服务流程时间线
   ============================================================ */
.process-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.process-visual {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 480px;
}

.process-visual img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

.process-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(18, 56, 47, 0.6));
}

.process-visual .process-label {
  position: absolute;
  bottom: 32px;
  left: 32px;
  right: 32px;
  z-index: 2;
  color: var(--color-white);
}

.process-visual .process-label .num {
  font-size: 64px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.25);
  line-height: 1;
  display: block;
  margin-bottom: 8px;
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
}

.process-visual .process-label p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
}

.timeline {
  position: relative;
  padding-left: 36px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

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

.timeline-dot {
  position: absolute;
  left: -36px;
  top: 6px;
  width: 24px;
  height: 24px;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-dot::after {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.timeline-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.timeline-item .step-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 440px;
}

.timeline-item .step-num {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}

/* ============================================================
   支持入口
   ============================================================ */
.support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.support-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.support-card:hover {
  transform: translateY(-2px);
  border-color: rgba(18, 56, 47, 0.3);
  box-shadow: var(--shadow-hover);
}

.support-card .support-icon {
  width: 56px;
  height: 56px;
  background: var(--color-gray-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  color: var(--color-primary);
  transition: background var(--transition), color var(--transition);
}

.support-card:hover .support-icon {
  background: var(--color-primary);
  color: var(--color-accent);
}

.support-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.support-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

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

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

/* ============================================================
   服务保障 / 数字指标
   ============================================================ */
.stats-section {
  background: var(--color-primary);
  color: var(--color-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stat-item {
  text-align: center;
  padding: 16px 0;
}

.stat-item .stat-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  margin-bottom: 6px;
}

.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
}

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

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

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

.faq-item .faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: color var(--transition);
}

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

.faq-item .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: transform 0.25s ease-out, background var(--transition), color var(--transition), border-color var(--transition);
}

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

.faq-item .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease-out;
}

.faq-item .faq-answer-inner {
  padding-bottom: 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ============================================================
   CTA
   ============================================================ */
.cta-section {
  background: var(--color-primary);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 40%, rgba(185, 138, 78, 0.18) 0%, transparent 60%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.3;
  margin-bottom: 12px;
}

.cta-subtitle {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 480px;
  line-height: 1.7;
}

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

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: var(--color-primary);
  color: #D6DED9;
  padding-top: 72px;
}

.footer-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo span:last-child {
  color: #D6DED9;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 300px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col a {
  font-size: 14px;
  color: #D6DED9;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom p {
  margin: 0;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1200px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .header-top-inner {
    flex-wrap: wrap;
  }
  .header-search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    margin: 8px 0 0;
  }
  .btn-header {
    display: none;
  }
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }
  .nav-main {
    display: none;
  }
  .nav-main.open {
    display: block;
  }
  .nav-main .container {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
  }
  .nav-main a {
    height: 44px;
    border-bottom: none;
    border-left: 2px solid transparent;
    padding: 0 20px;
  }
  .nav-main a.active {
    border-left-color: var(--color-accent);
  }
  .process-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .process-visual {
    min-height: 300px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .footer-layout {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .section {
    padding: var(--space-section-mobile) 0;
  }
}

@media (max-width: 767px) {
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 32px;
  }
  .service-grid {
    grid-template-columns: 1fr;
  }
  .support-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .stat-item .stat-num {
    font-size: 32px;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-actions {
    width: 100%;
  }
  .cta-actions .btn {
    flex: 1;
  }
  .footer-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 16px;
  }
  .category-hero {
    min-height: 320px;
  }
  .category-hero .hero-content {
    padding: 48px 0;
  }
  .category-hero h1 {
    font-size: 30px;
  }
  .hero-meta-badges {
    gap: 8px;
  }
  .service-card .card-img {
    height: 160px;
  }
  .support-card {
    padding: 24px 20px;
  }
  .timeline {
    padding-left: 30px;
  }
  .timeline-dot {
    left: -30px;
    width: 20px;
    height: 20px;
  }
  .timeline::before {
    left: 9px;
  }
  .faq-item .faq-question {
    font-size: 15px;
    padding: 20px 0;
  }
  .stat-item .stat-num {
    font-size: 28px;
  }
}

/* ============================================================
   Focus 可访问性
   ============================================================ */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================================
   滚动条
   ============================================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: rgba(18, 56, 47, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(18, 56, 47, 0.5);
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root {
  --color-primary: #12382F;
  --color-primary-light: #1E4D40;
  --color-accent: #B98A4E;
  --color-accent-light: #C89B62;
  --color-bg: #F6F4EF;
  --color-white: #FFFFFF;
  --color-surface: #EFF3EF;
  --color-text: #1A1A1A;
  --color-text-secondary: #5C5C5A;
  --color-text-muted: #99948C;
  --color-border: #E5E2DA;
  --color-border-input: #D8D4CB;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.06);
  --space-section: 100px;
  --space-section-sm: 56px;
  --container: 1200px;
  --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.2s ease-out;
}

/* ========== Reset / Base ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, figure, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

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

.section { padding: var(--space-section) 0; }
.section-alt { background: var(--color-white); }
.section-surface { background: var(--color-surface); }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-main);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-primary-light); color: var(--color-white); }

.btn-accent {
  background: var(--color-accent);
  color: var(--color-primary);
}
.btn-accent:hover { background: var(--color-accent-light); color: var(--color-primary); }

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.65);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); color: var(--color-white); }

.btn-sm { height: 38px; padding: 0 20px; font-size: 14px; }

/* ========== 标签 / 徽章 ========== */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: rgba(18, 56, 47, 0.06);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.4px;
  line-height: 1.6;
}

/* ========== 区块标题 ========== */
.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}
.section-index {
  display: block;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.5px;
}
.section-head p {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ========== Header（搜索主导航） ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 239, 0.92);
  border-bottom: 1px solid var(--color-border);
}
.header-top {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 74px;
}
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-accent);
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.search-box {
  flex: 1;
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}
.search-box input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-full);
  background: var(--color-white);
  padding: 0 20px 0 44px;
  font-size: 14px;
  font-family: var(--font-main);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
}
.search-box input::placeholder { color: var(--color-text-muted); }
.search-box input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(18, 56, 47, 0.15);
}
.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px;
  height: 17px;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: color var(--transition);
}
.search-box input:focus ~ .search-icon { color: var(--color-primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-direction: column;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: background var(--transition);
}
.nav-toggle:hover span { background: var(--color-accent); }
.nav-toggle:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.nav-main {
  border-top: 1px solid var(--color-border);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  min-height: 48px;
}
.nav-links a {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 12px 0;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a.active {
  color: var(--color-primary);
  font-weight: 600;
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 2px;
  background: var(--color-accent);
}

/* ========== Page Hero ========== */
.page-hero {
  position: relative;
  padding: 88px 0 80px;
  color: var(--color-white);
  overflow: hidden;
  min-height: 380px;
  display: flex;
  align-items: center;
  background-color: var(--color-primary);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #12382F 0%, rgba(18, 56, 47, 0.85) 55%, rgba(18, 56, 47, 0.45) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { color: rgba(255, 255, 255, 0.5); }
.page-hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -1px;
}
.page-hero .hero-subtitle {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.8;
  max-width: 560px;
  color: rgba(255, 255, 255, 0.88);
}

/* ========== Stats Bar ========== */
.stats-bar {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 36px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 12px 8px;
}
.stat-number {
  display: block;
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-accent);
  letter-spacing: -1px;
}
.stat-unit {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
  letter-spacing: 1px;
}

/* ========== Scenario Showcase ========== */
.scenario-row {
  display: grid;
  grid-template-columns: 55% 1fr;
  gap: 64px;
  align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--color-border);
}
.scenario-row:first-of-type { border-top: none; }
.scenario-row.reverse .scenario-media { order: 2; }

.scenario-media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.scenario-media img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform 0.4s ease-out;
}
.scenario-media:hover img { transform: scale(1.02); }
.media-index {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--color-primary);
  color: var(--color-accent);
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
}

.scenario-content {
  padding: 8px 0;
}
.scenario-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  border: 1px solid rgba(185, 138, 78, 0.4);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  background: rgba(185, 138, 78, 0.08);
}
.scenario-content h3 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
}
.scenario-content p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}
.scenario-content .tag-list { margin-bottom: 24px; }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}
.link-more .arrow { transition: transform var(--transition); font-family: var(--font-num); }
.link-more:hover { color: var(--color-accent); }
.link-more:hover .arrow { transform: translateX(4px); }

/* ========== Scenario Cards ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 32px 28px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.section-alt .scenario-card { background: var(--color-bg); }
.scenario-card:hover {
  transform: translateY(-2px);
  border-color: rgba(18, 56, 47, 0.4);
  box-shadow: var(--shadow-hover);
}
.scenario-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}
.scenario-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}
.card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 1px solid rgba(18, 56, 47, 0.3);
  padding-bottom: 2px;
  transition: color var(--transition), border-color var(--transition);
}
.card-link:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* ========== Process ========== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.process-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  padding: 36px 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.process-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.process-step {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.process-item h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}
.process-item p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 24px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-family: var(--font-main);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--color-primary); }
.faq-question:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--color-border-input);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  color: var(--color-text-muted);
  transition: transform 0.25s ease, color var(--transition), border-color var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.faq-item.active .faq-answer { max-height: 320px; }
.faq-answer p {
  padding: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* ========== CTA ========== */
.cta-section {
  background: var(--color-primary);
  padding: 88px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-3.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.08;
}
.cta-section .container {
  position: relative;
  z-index: 2;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.3;
  margin-bottom: 14px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--color-primary);
  color: #D6DED9;
  padding: 64px 0 0;
}
.footer-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo a { color: var(--color-white); font-size: 20px; }
.footer-brand .logo-icon {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-accent);
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(214, 222, 217, 0.75);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 18px;
}
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  font-size: 14px;
  color: rgba(214, 222, 217, 0.85);
}
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(214, 222, 217, 0.6);
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .section { padding: 72px 0; }
  .header-top {
    flex-wrap: wrap;
    padding-top: 16px;
    padding-bottom: 16px;
  }
  .search-box {
    order: 3;
    flex: 0 0 100%;
    max-width: none;
    margin: 12px 0 4px;
  }
  .header-actions .btn { display: none; }
  .nav-toggle { display: flex; }
  .nav-main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-main.open { display: block; }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 16px;
  }
  .nav-links a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 15px;
  }
  .nav-links a:last-child { border-bottom: none; }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { color: var(--color-primary); }

  .page-hero { padding: 64px 0 60px; }
  .page-hero h1 { font-size: 38px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .scenario-row {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0;
  }
  .scenario-row.reverse .scenario-media { order: 0; }
  .scenario-media img { height: 340px; }

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

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

@media (max-width: 576px) {
  .container { padding: 0 16px; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 28px; }
  .section-head p { font-size: 15px; }

  .header-top { gap: 12px; }
  .logo a { font-size: 17px; }
  .logo-icon { width: 32px; height: 32px; font-size: 12px; }

  .nav-links {
    flex-direction: row;
    overflow-x: auto;
    white-space: nowrap;
    gap: 20px;
    padding: 12px 16px;
    scrollbar-width: none;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a {
    flex-shrink: 0;
    padding: 8px 0;
    border-bottom: none;
    font-size: 14px;
  }

  .page-hero { padding: 52px 0 48px; min-height: 0; }
  .page-hero h1 { font-size: 32px; }
  .page-hero .hero-subtitle { font-size: 15px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-number { font-size: 34px; }

  .scenario-row { padding: 32px 0; }
  .scenario-media img { height: 260px; }
  .scenario-content h3 { font-size: 24px; }

  .cards-grid { grid-template-columns: 1fr; }
  .scenario-card { padding: 24px; }

  .process-item { padding: 28px 24px; }

  .cta-section { padding: 64px 0; }
  .cta-section h2 { font-size: 26px; }
  .cta-buttons .btn { width: 100%; }

  .footer-layout { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}