/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #22D3B0;
  --primary-dark: #0EAD9A;
  --accent: #E9B872;
  --bg-dark: #081524;
  --bg-panel: #0E1D33;
  --bg-deeper: #060D18;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.14);
  --text-main: #E9F2FF;
  --text-secondary: #9FB1D0;
  --text-muted: #61799F;
  --text-dark: #06231F;
  --success: #2DD4A7;
  --warning: #F5BC5A;
  --error: #FF7A7A;
  --info: #63A5FF;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-glass: 0 12px 40px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 20px rgba(34, 211, 176, 0.35);
  --shadow-glow-hover: 0 0 30px rgba(34, 211, 176, 0.5);
  --container-max: 1200px;
  --sidebar-w: 240px;
  --sidebar-w-collapsed: 84px;
  --space-section: 90px;
  --space-mobile: 45px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Inter", "PingFang SC", sans-serif;
}
/* ===== Reset 基础 ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-cn);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding-bottom: 76px;
  overflow-x: hidden;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease;
}
a:hover {
  color: #6be4c8;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button,
input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* ===== 通用按钮 ===== */
.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;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
  letter-spacing: .5px;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn-primary {
  background: linear-gradient(135deg, #22D3B0, #0EAD9A);
  color: var(--text-dark);
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  box-shadow: var(--shadow-glow-hover);
  transform: translateY(-2px);
  color: var(--text-dark);
}
.btn-primary:active {
  transform: scale(.97);
}
.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .4);
  color: var(--text-main);
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, .8);
  background: rgba(255, 255, 255, .04);
  color: var(--text-main);
  transform: translateY(-2px);
}
.btn-gold {
  background: linear-gradient(135deg, #E9B872, #D9A45A);
  color: var(--text-dark);
  box-shadow: 0 0 18px rgba(233, 184, 114, .3);
}
.btn-gold:hover {
  box-shadow: 0 0 28px rgba(233, 184, 114, .5);
  transform: translateY(-2px);
  color: var(--text-dark);
}
.btn-sm {
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
}
.btn-large {
  height: 54px;
  padding: 0 42px;
  font-size: 17px;
}
.btn-block {
  width: 100%;
}
/* ===== 标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  background: rgba(34, 211, 176, .12);
  border: 1px solid rgba(34, 211, 176, .3);
  color: var(--primary);
  letter-spacing: .5px;
}
.badge-gold {
  background: rgba(233, 184, 114, .12);
  border-color: rgba(233, 184, 114, .3);
  color: var(--accent);
}
/* ===== 玻璃卡片 ===== */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glass);
}
/* ===== 侧边栏导航 ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: #0A1729;
  border-right: 1px solid rgba(255, 255, 255, .06);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: width .3s ease;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 28px 24px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.brand-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #22D3B0, #0EAD9A);
  color: var(--text-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  font-family: var(--font-num);
  box-shadow: 0 0 14px rgba(34, 211, 176, .35);
  flex-shrink: 0;
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .5px;
  white-space: nowrap;
}
.sidebar-nav {
  flex: 1;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-link {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all .25s ease;
  border-radius: 0 10px 10px 0;
  white-space: nowrap;
}
.nav-link:hover {
  background: rgba(255, 255, 255, .05);
  color: var(--text-main);
}
.nav-link.active {
  background: rgba(34, 211, 176, .08);
  border-left: 3px solid var(--primary);
  color: var(--primary);
  box-shadow: inset 0 0 14px rgba(34, 211, 176, .08);
}
.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.sidebar-foot {
  padding: 20px 24px;
  border-top: 1px solid rgba(255, 255, 255, .06);
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}
/* ===== 移动端头部 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(8, 21, 36, .95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1100;
}
.mobile-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
}
.mobile-brand .brand-badge {
  width: 32px;
  height: 32px;
  font-size: 13px;
}
.menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 10px;
  color: var(--text-main);
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .1);
}
.menu-toggle:hover {
  background: rgba(255, 255, 255, .1);
}
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(6, 13, 24, .98);
  z-index: 1150;
  display: flex;
  flex-direction: column;
  padding: 80px 28px 32px;
  transform: translateX(100%);
  transition: transform .35s ease;
}
.mobile-drawer.open {
  transform: translateX(0);
}
.drawer-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, .06);
  border-radius: 10px;
  color: var(--text-main);
  cursor: pointer;
}
.drawer-link {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 12px;
  transition: all .2s ease;
}
.drawer-link:hover,
.drawer-link.active {
  background: rgba(34, 211, 176, .1);
  color: var(--primary);
}
.drawer-link .nav-icon {
  margin-right: 14px;
}
.drawer-foot {
  margin-top: auto;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}
/* ===== 主内容区 ===== */
.main-wrapper {
  margin-left: var(--sidebar-w);
  transition: margin-left .3s ease;
}
/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 90px 0 80px;
  background: var(--bg-dark);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: .35;
  pointer-events: none;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 40%, rgba(34, 211, 176, .12), transparent 60%),
              radial-gradient(ellipse at 80% 80%, rgba(8, 21, 36, .9), transparent 70%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 60px;
  align-items: center;
}
.hero-text .hero-badge-wrap {
  margin-bottom: 16px;
}
.hero-text h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero-text h1 span {
  color: var(--primary);
}
.hero-sub {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 460px;
  margin-bottom: 32px;
}
.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-meta {
  display: flex;
  gap: 24px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.hero-meta-item i {
  color: var(--primary);
  font-style: normal;
  font-size: 16px;
}
/* Hero 右侧登录示意 */
.hero-visual {
  position: relative;
}
.hero-card {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: url('/assets/images/backpic/back-2.png') center/cover;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: var(--shadow-glass);
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 21, 36, .35);
  backdrop-filter: blur(2px);
}
.login-mock {
  position: relative;
  z-index: 2;
  width: 300px;
  background: rgba(10, 23, 41, .85);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 18px;
  padding: 28px 26px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .5);
}
.mock-header {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  text-align: center;
}
.mock-sub {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 20px;
}
.mock-field {
  margin-bottom: 14px;
}
.mock-field label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.mock-field input {
  width: 100%;
  height: 40px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  padding: 0 14px;
  color: var(--text-main);
  font-size: 13px;
  transition: border-color .25s, box-shadow .25s;
}
.mock-field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34, 211, 176, .15);
}
.mock-field input::placeholder {
  color: #4a6080;
}
.mock-btn {
  margin-top: 18px;
}
.mock-tip {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
}
.mock-tip a {
  color: var(--primary);
}
/* ===== 数据信任条 ===== */
.stats-bar {
  background: rgba(8, 21, 36, .6);
  border-top: 1px solid rgba(255, 255, 255, .05);
  border-bottom: 1px solid rgba(255, 255, 255, .05);
  padding: 40px 0;
  backdrop-filter: blur(10px);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 10px 0;
}
.stat-num {
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  display: block;
  margin-top: 6px;
}
/* ===== 卖点三连 ===== */
.features {
  padding: var(--space-section) 0;
}
.section-header {
  margin-bottom: 48px;
}
.section-tag {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
}
.section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 10px;
  max-width: 520px;
}
.features-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 24px;
  align-items: stretch;
}
.feature-large {
  background: linear-gradient(145deg, rgba(34, 211, 176, .12), rgba(255, 255, 255, .04) 60%);
  border: 1px solid rgba(34, 211, 176, .25);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: all .35s ease;
}
.feature-large::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.feature-large:hover {
  box-shadow: var(--shadow-glow-hover);
  transform: translateY(-3px);
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(34, 211, 176, .15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.feature-icon.gold {
  background: rgba(233, 184, 114, .15);
  color: var(--accent);
}
.feature-icon svg {
  width: 26px;
  height: 26px;
}
.feature-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}
.feature-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.feature-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.feature-list li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
  font-size: 15px;
}
.feature-stack {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}
.feature-small {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.feature-small:hover {
  border-color: rgba(34, 211, 176, .35);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
  transform: translateY(-2px);
}
.feature-small .feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  margin-bottom: 14px;
}
.feature-small .feature-icon svg {
  width: 20px;
  height: 20px;
}
.feature-small .feature-title {
  font-size: 17px;
  margin-bottom: 6px;
}
.feature-small .feature-text {
  font-size: 14px;
}
/* ===== 场景演示 ===== */
.steps {
  padding: var(--space-section) 0;
  background: #0A1729;
  position: relative;
  overflow: hidden;
}
.steps::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(34, 211, 176, .1), transparent 70%);
  pointer-events: none;
}
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 56px;
  position: relative;
  z-index: 1;
}
.step-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}
.step-item:nth-child(even) {
  direction: rtl;
}
.step-item:nth-child(even) .step-content {
  direction: ltr;
}
.step-item:nth-child(even) .step-visual {
  direction: ltr;
}
.step-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: var(--shadow-glass);
}
.step-visual img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}
.step-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(8, 21, 36, .6));
  pointer-events: none;
}
.step-number {
  font-family: var(--font-num);
  font-size: 46px;
  font-weight: 700;
  color: rgba(34, 211, 176, .35);
  line-height: 1;
  margin-bottom: 12px;
}
.step-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.step-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.step-points {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.step-points li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}
.step-points li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 8px;
}
/* ===== 社会认同 ===== */
.testimonials {
  padding: var(--space-section) 0;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.testimonial-main {
  background: linear-gradient(145deg, rgba(233, 184, 114, .08), rgba(255, 255, 255, .03) 60%);
  border: 1px solid rgba(233, 184, 114, .2);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
}
.testimonial-main .testimonial-quote {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-main);
  margin-bottom: 20px;
  flex: 1;
}
.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #0EAD9A);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  flex-shrink: 0;
}
.testimonial-avatar.gold {
  background: linear-gradient(135deg, var(--accent), #C99A4B);
}
.testimonial-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}
.testimonial-role {
  font-size: 12px;
  color: var(--text-muted);
}
.stars {
  display: flex;
  gap: 2px;
  color: var(--accent);
  font-size: 14px;
  margin-top: 4px;
}
.testimonial-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.testimonial-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: all .3s ease;
}
.testimonial-card:hover {
  border-color: rgba(255, 255, 255, .25);
  transform: translateY(-2px);
}
.testimonial-card .testimonial-quote {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.7;
}
.testimonial-card .testimonial-user {
  gap: 10px;
}
.testimonial-card .testimonial-avatar {
  width: 32px;
  height: 32px;
  font-size: 13px;
}
.testimonial-card .testimonial-name {
  font-size: 13px;
}
/* ===== 最新动态 ===== */
.news {
  padding: var(--space-section) 0;
  background: linear-gradient(180deg, transparent, rgba(14, 29, 51, .4));
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  border-color: rgba(34, 211, 176, .3);
  box-shadow: var(--shadow-glass);
  transform: translateY(-3px);
}
.news-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.news-card time {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-num);
}
.news-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.5;
  transition: color .2s;
}
.news-card:hover h3 {
  color: var(--primary);
}
.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
}
.news-link:hover {
  gap: 10px;
  color: #6be4c8;
}
.news-link span {
  transition: transform .2s;
}
.news-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 15px;
  background: var(--glass-bg);
  border: 1px dashed rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
}
/* ===== 二次 CTA ===== */
.cta-section {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(34, 211, 176, .18), transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cta-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}
.cta-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
}
/* ===== 页脚 ===== */
.footer {
  background: var(--bg-deeper);
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-brand .footer-logo .brand-badge {
  width: 38px;
  height: 38px;
  font-size: 14px;
}
.footer-brand .footer-logo span:last-child {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}
.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 260px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
/* ===== 底部固定转化条 ===== */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: var(--sidebar-w);
  right: 0;
  background: rgba(6, 13, 24, .92);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 12px 24px;
  z-index: 900;
  transition: left .3s ease;
}
.bottom-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: calc(var(--container-max) - 40px);
  margin: 0 auto;
}
.bottom-bar-text {
  font-size: 14px;
  color: var(--text-main);
  font-weight: 500;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 10px;
}
.bottom-bar-text::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  flex-shrink: 0;
}
.bottom-bar-form {
  display: flex;
  gap: 10px;
  align-items: center;
}
.bottom-input {
  width: 220px;
  height: 40px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  padding: 0 16px;
  color: var(--text-main);
  font-size: 13px;
  transition: border-color .25s, box-shadow .25s;
}
.bottom-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34, 211, 176, .15);
}
.bottom-input::placeholder {
  color: #4a6080;
}
/* ===== 响应式断点 ===== */
@media (max-width: 1199px) {
  .sidebar {
    width: var(--sidebar-w-collapsed);
  }
  .sidebar-brand {
    padding: 24px 22px;
    justify-content: center;
  }
  .brand-name,
  .sidebar-nav .nav-link span,
  .sidebar-foot {
    display: none;
  }
  .sidebar-nav {
    padding: 16px 10px;
  }
  .nav-link {
    padding: 0;
    justify-content: center;
    border-left: none;
    border-radius: 12px;
  }
  .nav-link.active {
    border-left: none;
  }
  .main-wrapper {
    margin-left: var(--sidebar-w-collapsed);
  }
  .bottom-bar {
    left: var(--sidebar-w-collapsed);
  }
}
@media (max-width: 991px) {
  .sidebar {
    display: none;
  }
  .mobile-header {
    display: flex;
  }
  .mobile-drawer {
    display: flex;
  }
  .main-wrapper {
    margin-left: 0;
  }
  .bottom-bar {
    left: 0;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-stack {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .step-item {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .step-item:nth-child(even) {
    direction: ltr;
  }
  .step-visual img {
    height: 200px;
  }
}
@media (max-width: 767px) {
  body {
    padding-bottom: 60px;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero {
    padding: 56px 0 50px;
  }
  .hero-text h1 {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-ctas {
    flex-direction: column;
  }
  .hero-ctas .btn {
    width: 100%;
  }
  .hero-meta {
    gap: 14px;
  }
  .hero-card {
    min-height: 320px;
  }
  .login-mock {
    width: 260px;
    padding: 22px 20px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .stat-num {
    font-size: 28px;
  }
  .features {
    padding: var(--space-mobile) 0;
  }
  .section-header h2 {
    font-size: 23px;
  }
  .feature-large {
    padding: 26px 20px;
  }
  .feature-stack {
    grid-template-columns: 1fr;
  }
  .steps {
    padding: var(--space-mobile) 0;
  }
  .steps-list {
    gap: 40px;
  }
  .step-number {
    font-size: 38px;
  }
  .step-title {
    font-size: 19px;
  }
  .news {
    padding: var(--space-mobile) 0;
  }
  .news-card {
    padding: 20px;
  }
  .testimonials {
    padding: var(--space-mobile) 0;
  }
  .testimonial-main {
    padding: 26px 20px;
  }
  .cta-section {
    padding: 50px 0;
  }
  .cta-title {
    font-size: 24px;
  }
  .cta-sub {
    font-size: 15px;
  }
  .footer {
    padding: 40px 0 100px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .bottom-bar {
    padding: 8px 16px;
  }
  .bottom-bar-text,
  .bottom-input {
    display: none;
  }
  .bottom-bar-form {
    width: 100%;
  }
  .bottom-btn {
    width: 100%;
  }
  .mobile-drawer {
    padding: 70px 20px 24px;
  }
}
@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-meta {
    flex-direction: column;
    gap: 8px;
  }
  .hero-visual {
    min-width: 0;
  }
  .step-visual img {
    height: 160px;
  }
}

/* roulang page: article */
:root {
  --primary: #22D3B0;
  --primary-dark: #0EAD9A;
  --gold: #E9B872;
  --bg-deep: #081524;
  --bg-panel: #0E1D33;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.14);
  --text-main: #E9F2FF;
  --text-secondary: #9FB1D0;
  --text-muted: #61799F;
  --text-reverse: #06231F;
  --success: #2DD4A7;
  --warning: #F5BC5A;
  --danger: #FF7A7A;
  --info: #63A5FF;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 20px rgba(34, 211, 176, 0.35);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Inter", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 15px;
  overflow-x: hidden;
}

body {
  background-image:
    radial-gradient(ellipse 800px 500px at 10% 0%, rgba(34, 211, 176, 0.08), transparent 60%),
    radial-gradient(ellipse 700px 600px at 100% 100%, rgba(13, 40, 70, 0.5), transparent 70%);
  background-attachment: fixed;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

a:hover,
a:focus-visible {
  color: #66E8D0;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
}

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

ul,
ol {
  padding-left: 1.4em;
}

h1, h2, h3, h4, h5 {
  line-height: 1.3;
  color: var(--text-main);
  font-weight: 700;
}

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

.hidden-mobile {
  display: block;
}

/* ===== 左侧导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 240px;
  height: 100vh;
  background: rgba(10, 22, 42, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  padding: 28px 20px 20px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 24px;
  color: var(--text-main);
}

.site-logo:hover {
  color: var(--text-main);
}

.brand-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-reverse);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px rgba(34, 211, 176, 0.35);
  flex-shrink: 0;
}

.brand-text {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
}

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

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 14px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: background 0.25s ease, color 0.25s ease;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(34, 211, 176, 0.08);
}

.nav-link.active::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(34, 211, 176, 0.6);
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-foot {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== 移动端导航 ===== */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1200;
  height: 60px;
  background: rgba(8, 21, 36, 0.95);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.mobile-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-weight: 700;
}

.mobile-logo .brand-badge {
  width: 32px;
  height: 32px;
  font-size: 14px;
}

.burger-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.burger-btn svg {
  width: 20px;
  height: 20px;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1100;
  background: var(--bg-deep);
  padding: 80px 24px 30px;
  display: none;
  flex-direction: column;
  gap: 4px;
}

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

.mobile-drawer .nav-link {
  height: 48px;
  font-size: 16px;
}

.drawer-close {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.drawer-close svg {
  width: 20px;
  height: 20px;
}

/* ===== 主体 ===== */
.main-wrapper {
  margin-left: 240px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 文章页 ===== */
.article-page {
  flex: 1;
  padding: 60px 0 80px;
}

.article-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

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

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

.breadcrumb .sep {
  color: var(--text-muted);
  margin: 0 4px;
}

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

.article-hero {
  max-width: 860px;
  margin-bottom: 28px;
}

.article-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  color: var(--text-main);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta .meta-item svg {
  width: 15px;
  height: 15px;
  opacity: 0.7;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(34, 211, 176, 0.15);
  color: var(--primary);
  border: 1px solid rgba(34, 211, 176, 0.3);
}

.article-body {
  max-width: 760px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  box-shadow: var(--shadow-card);
}

.article-body p {
  margin-bottom: 20px;
  color: var(--text-main);
  line-height: 1.9;
}

.article-body h2 {
  font-size: 24px;
  margin: 40px 0 18px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

.article-body h3 {
  font-size: 20px;
  margin: 30px 0 14px;
}

.article-body ul,
.article-body ol {
  margin-bottom: 20px;
  padding-left: 1.5em;
  color: var(--text-secondary);
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.article-body blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--gold);
  background: rgba(233, 184, 114, 0.06);
  border-radius: 0 12px 12px 0;
  color: var(--text-secondary);
  font-style: normal;
}

.article-body blockquote p {
  margin-bottom: 0;
}

.article-body img {
  margin: 28px 0;
  border-radius: 14px;
  width: 100%;
}

.article-body pre {
  background: var(--bg-panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.7;
}

.article-body code {
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 0.92em;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  overflow: hidden;
}

.article-body th {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  font-weight: 600;
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.article-body td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.article-body tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(34, 211, 176, 0.4);
  text-underline-offset: 4px;
}

/* 空态 */
.article-empty {
  max-width: 760px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 80px 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.article-empty .empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--text-muted);
}

.article-empty .empty-icon svg {
  width: 28px;
  height: 28px;
}

.article-empty h2 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.article-empty p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}

/* ===== 标签与分享 ===== */
.article-tags {
  max-width: 760px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.article-tags .tag-label {
  font-size: 13px;
  color: var(--text-muted);
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.25s ease;
}

.tag-chip:hover {
  color: var(--primary);
  border-color: rgba(34, 211, 176, 0.4);
  background: rgba(34, 211, 176, 0.08);
}

.share-wrap {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.share-label {
  font-size: 13px;
  color: var(--text-muted);
}

.share-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
}

.share-btn svg {
  width: 16px;
  height: 16px;
}

.share-btn:hover {
  color: var(--primary);
  border-color: rgba(34, 211, 176, 0.4);
  box-shadow: 0 0 12px rgba(34, 211, 176, 0.2);
}

/* ===== 相关推荐 ===== */
.related-section {
  max-width: 1160px;
  margin: 60px auto 0;
  padding: 0 24px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title::before {
  content: "";
  width: 4px;
  height: 24px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--primary), var(--primary-dark));
  box-shadow: 0 0 12px rgba(34, 211, 176, 0.5);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 176, 0.5);
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.45);
}

.related-card .card-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-panel);
}

.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.related-card .card-body {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-card .card-badge {
  align-self: flex-start;
}

.related-card h3 {
  font-size: 17px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--text-main);
  transition: color 0.25s ease;
}

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

.related-card .card-time {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}

.related-card .card-time svg {
  width: 14px;
  height: 14px;
}

.back-link {
  max-width: 1160px;
  margin: 36px auto 0;
  padding: 0 24px;
}

.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 10px 20px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.25s ease;
}

.back-link a:hover {
  color: var(--primary);
  border-color: rgba(34, 211, 176, 0.4);
  background: rgba(34, 211, 176, 0.08);
}

.back-link svg {
  width: 16px;
  height: 16px;
}

/* ===== 页脚 ===== */
.footer {
  background: #060D18;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 56px 0 0;
  margin-left: 240px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

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

.footer-col ul a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.25s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom .footer-tech {
  font-size: 12px;
}

/* ===== 底部固定转化条 ===== */
.fixed-cta {
  position: fixed;
  bottom: 0;
  left: 240px;
  right: 0;
  z-index: 900;
  background: rgba(8, 21, 36, 0.88);
  backdrop-filter: blur(18px);
  border-top: 1px solid rgba(34, 211, 176, 0.15);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.35);
}

.fixed-cta .cta-text {
  font-size: 14px;
  color: var(--text-secondary);
}

.fixed-cta .cta-text strong {
  color: var(--primary);
  font-weight: 600;
}

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

.fixed-cta .cta-input {
  height: 40px;
  padding: 0 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-main);
  font-size: 14px;
  width: 240px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.fixed-cta .cta-input::placeholder {
  color: var(--text-muted);
}

.fixed-cta .cta-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34, 211, 176, 0.15);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-reverse);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
  box-shadow: var(--shadow-glow);
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.btn-primary:hover {
  color: var(--text-reverse);
  filter: brightness(1.08);
  box-shadow: 0 0 26px rgba(34, 211, 176, 0.5);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 0 12px rgba(34, 211, 176, 0.3);
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

body {
  padding-bottom: 76px;
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) and (min-width: 992px) {
  .site-header {
    width: 84px;
    padding: 24px 12px 16px;
  }
  .brand-text {
    display: none;
  }
  .site-logo {
    justify-content: center;
    padding-bottom: 20px;
  }
  .brand-badge {
    margin: 0 auto;
  }
  .nav-link {
    justify-content: center;
    padding: 0;
  }
  .nav-link span {
    display: none;
  }
  .nav-icon {
    width: 22px;
    height: 22px;
  }
  .sidebar-foot {
    font-size: 10px;
  }
  .main-wrapper,
  .footer,
  .fixed-cta {
    margin-left: 84px;
  }
  .fixed-cta {
    left: 84px;
  }
}

@media (max-width: 991px) {
  .site-header {
    display: none;
  }
  .mobile-topbar {
    display: flex;
  }
  .main-wrapper {
    margin-left: 0;
    padding-top: 60px;
  }
  .footer {
    margin-left: 0;
  }
  .fixed-cta {
    left: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 767px) {
  .container,
  .article-container,
  .related-section,
  .back-link {
    padding-left: 16px;
    padding-right: 16px;
  }
  .article-page {
    padding: 32px 0 60px;
  }
  .article-body {
    padding: 24px 20px;
  }
  .article-hero h1 {
    font-size: 24px;
  }
  .article-meta {
    gap: 12px 16px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .fixed-cta {
    padding: 10px 16px;
  }
  .fixed-cta .cta-text,
  .fixed-cta .cta-input {
    display: none;
  }
  .fixed-cta .cta-actions {
    width: 100%;
  }
  .fixed-cta .btn-primary {
    width: 100%;
  }
  .article-tags {
    flex-direction: column;
    align-items: flex-start;
  }
  .share-wrap {
    margin-left: 0;
  }
  .breadcrumb {
    font-size: 12px;
  }
}

@media (min-width: 768px) {
  .mobile-drawer {
    display: none !important;
  }
  .drawer-close {
    display: none !important;
  }
}

/* roulang page: category1 */
:root {
            --primary: #22D3B0;
            --primary-dark: #0EAD9A;
            --gold: #E9B872;
            --bg: #081524;
            --bg-panel: #0E1D33;
            --bg-deep: #060D18;
            --text-main: #E9F2FF;
            --text-secondary: #9FB1D0;
            --text-muted: #61799F;
            --text-dark: #06231F;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.14);
            --radius-lg: 18px;
            --radius-md: 14px;
            --radius-sm: 12px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
            --glow-primary: 0 0 20px rgba(34, 211, 176, 0.35);
            --sidebar-w: 240px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
            padding-bottom: 76px;
            position: relative;
        }
        body::before {
            content: "";
            position: fixed;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(34, 211, 176, 0.1) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        body::after {
            content: "";
            position: fixed;
            bottom: -15%;
            left: 20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(233, 184, 114, 0.07) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 侧边导航 */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: width 0.3s ease;
        }
        .sidebar-brand {
            padding: 32px 24px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .brand-badge {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            letter-spacing: -0.5px;
            box-shadow: 0 0 16px rgba(34, 211, 176, 0.4);
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }
        .sidebar-nav {
            flex: 1;
            padding: 12px 14px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 46px;
            padding: 0 14px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
        }
        .nav-link.active {
            background: rgba(34, 211, 176, 0.1);
            color: var(--primary);
        }
        .nav-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
            box-shadow: 0 0 12px rgba(34, 211, 176, 0.6);
        }
        .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }
        .sidebar-copy {
            padding: 20px 24px;
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* 移动端导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: rgba(6, 13, 24, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 200;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }
        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-brand-text {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }
        .hamburger {
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .hamburger:hover {
            border-color: rgba(34, 211, 176, 0.5);
        }
        .hamburger-line {
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger.active .hamburger-line:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active .hamburger-line:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active .hamburger-line:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--bg-deep);
            z-index: 199;
            padding: 16px 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .mobile-menu-link:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
        }
        .mobile-menu-link.active {
            background: rgba(34, 211, 176, 0.1);
            color: var(--primary);
        }
        .mobile-menu-link .nav-icon {
            width: 18px;
            height: 18px;
        }

        /* 主内容区 */
        .main-wrap {
            margin-left: var(--sidebar-w);
            position: relative;
            z-index: 1;
            min-height: 100vh;
        }

        /* 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;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            line-height: 1;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-dark);
            box-shadow: var(--glow-primary);
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(34, 211, 176, 0.55);
            transform: translateY(-2px);
            filter: brightness(1.05);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: scale(0.97);
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--gold), #d4a259);
            color: var(--text-dark);
            box-shadow: 0 0 20px rgba(233, 184, 114, 0.3);
        }
        .btn-gold:hover {
            box-shadow: 0 0 30px rgba(233, 184, 114, 0.5);
            transform: translateY(-2px);
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* 通用卡片 */
        .card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            padding: 28px;
            transition: all 0.35s ease;
            position: relative;
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 176, 0.3);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45), 0 0 24px rgba(34, 211, 176, 0.08);
        }

        /* 分类 Hero */
        .category-hero {
            position: relative;
            padding: 100px 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 21, 36, 0.94) 45%, rgba(8, 21, 36, 0.78));
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .category-hero-text .badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(34, 211, 176, 0.12);
            border: 1px solid rgba(34, 211, 176, 0.3);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }
        .category-hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-visual {
            position: relative;
        }
        .hero-img-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            position: relative;
            background: var(--bg-panel);
        }
        .hero-img-card img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            display: block;
        }
        .hero-float-card {
            position: absolute;
            left: 18px;
            bottom: 18px;
            right: 18px;
            background: rgba(8, 21, 36, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .float-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 10px rgba(34, 211, 176, 0.8);
            flex-shrink: 0;
        }
        .float-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }
        .float-sub {
            font-size: 12px;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* 服务概览 */
        .section {
            padding: 90px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto;
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1.15fr 1fr;
            grid-template-rows: 1fr 1fr;
            gap: 24px;
        }
        .card-large {
            grid-row: 1 / 3;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 360px;
            background: linear-gradient(145deg, rgba(34, 211, 176, 0.08), rgba(255, 255, 255, 0.04));
        }
        .card-large:hover {
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45), 0 0 36px rgba(34, 211, 176, 0.14);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(34, 211, 176, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .card-icon svg {
            width: 26px;
            height: 26px;
            stroke: var(--primary);
        }
        .card-large h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .card-large p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .card-small {
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 160px;
            padding: 26px;
        }
        .card-small h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .card-small p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }

        /* 适用场景 */
        .scene-section {
            background: var(--bg-panel);
            padding: 90px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .scene-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 56px;
        }
        .scene-item:last-child {
            margin-bottom: 0;
        }
        .scene-item:nth-child(even) .scene-img {
            order: -1;
        }
        .scene-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .scene-info h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .scene-info p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .scene-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
        }
        .scene-img img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .scene-img:hover img {
            transform: scale(1.03);
        }

        /* 服务流程 */
        .process-section {
            padding: 90px 0;
        }
        .process-steps {
            position: relative;
            max-width: 720px;
            margin: 0 auto;
            padding-left: 48px;
        }
        .process-steps::before {
            content: "";
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary) 0%, var(--gold) 100%);
            opacity: 0.5;
        }
        .step {
            position: relative;
            margin-bottom: 40px;
        }
        .step:last-child {
            margin-bottom: 0;
        }
        .step::before {
            content: "";
            position: absolute;
            left: -43px;
            top: 10px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 14px rgba(34, 211, 176, 0.7);
        }
        .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 22px 26px;
            transition: all 0.3s ease;
        }
        .step-card:hover {
            border-color: rgba(34, 211, 176, 0.3);
            background: rgba(34, 211, 176, 0.04);
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .step-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }

        /* 会员对比 */
        .compare-section {
            background: var(--bg-panel);
            padding: 90px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: 860px;
            margin: 0 auto;
        }
        .compare-card {
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.03);
            transition: all 0.35s ease;
        }
        .compare-card.featured {
            background: linear-gradient(145deg, rgba(233, 184, 114, 0.08), rgba(255, 255, 255, 0.03));
            border-color: rgba(233, 184, 114, 0.25);
            position: relative;
        }
        .compare-card.featured::after {
            content: "推荐";
            position: absolute;
            top: -12px;
            right: 24px;
            background: linear-gradient(135deg, var(--gold), #d4a259);
            color: var(--text-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 0 14px rgba(233, 184, 114, 0.4);
        }
        .compare-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .compare-card .price {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 4px;
            font-family: "DIN Alternate", "Inter", var(--font-family);
        }
        .compare-card .price-desc {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 24px;
        }
        .compare-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 7px 0;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }
        .compare-card ul li::before {
            content: "";
            flex-shrink: 0;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 9px;
        }
        .compare-card.featured ul li::before {
            background: var(--gold);
        }

        /* FAQ */
        .faq-section {
            padding: 90px 0;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.02);
            transition: all 0.3s ease;
        }
        .faq-item.open {
            background: var(--glass-bg);
            border-color: rgba(34, 211, 176, 0.25);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: color 0.3s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            stroke: currentColor;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer p {
            padding: 0 24px 22px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
        }

        /* CTA */
        .cta-section {
            padding: 100px 0;
            position: relative;
            text-align: center;
            background: radial-gradient(ellipse at center, rgba(34, 211, 176, 0.12) 0%, transparent 70%);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        /* 页脚 */
        .footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 64px 0 0;
            position: relative;
            z-index: 2;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .footer-logo .brand-badge {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }
        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer-tech {
            font-size: 12px;
        }

        /* 底部固定转化条 */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(6, 13, 24, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            z-index: 300;
            padding: 14px 0;
            box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.4);
        }
        .sticky-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .sticky-brand {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
        }
        .sticky-brand .highlight {
            color: var(--primary);
            font-weight: 700;
        }
        .sticky-form {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .sticky-form input {
            width: 220px;
            height: 42px;
            padding: 0 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-main);
            font-size: 14px;
            transition: all 0.3s ease;
        }
        .sticky-form input::placeholder {
            color: var(--text-muted);
        }
        .sticky-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(34, 211, 176, 0.15);
        }
        .sticky-form .btn {
            height: 42px;
            padding: 0 22px;
            font-size: 14px;
        }

        /* 响应式 */
        @media (max-width: 1199px) {
            :root {
                --sidebar-w: 84px;
            }
            .sidebar-brand {
                justify-content: center;
                padding: 24px 0 16px;
            }
            .brand-text {
                display: none;
            }
            .nav-link {
                justify-content: center;
                padding: 0;
            }
            .nav-link span {
                display: none;
            }
            .nav-link.active::before {
                left: 0;
            }
            .sidebar-copy {
                display: none;
            }
            .main-wrap {
                margin-left: 84px;
            }
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual {
                max-width: 500px;
            }
        }
        @media (max-width: 991px) {
            .sidebar {
                display: none;
            }
            .main-wrap {
                margin-left: 0;
                padding-top: 60px;
            }
            .mobile-header {
                display: flex;
            }
            .section {
                padding: 70px 0;
            }
            .scene-section,
            .compare-section {
                padding: 70px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            body {
                padding-bottom: 68px;
            }
            .container {
                padding: 0 20px;
            }
            .category-hero {
                padding: 60px 0 70px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-img-card img {
                height: 220px;
            }
            .overview-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .card-large {
                grid-row: auto;
                min-height: auto;
            }
            .scene-item {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .scene-item:nth-child(even) .scene-img {
                order: 0;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 56px 0;
            }
            .scene-section,
            .compare-section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .process-steps {
                padding-left: 36px;
            }
            .step::before {
                left: -31px;
                width: 10px;
                height: 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .sticky-brand {
                display: none;
            }
            .sticky-form input {
                width: 140px;
            }
            .sticky-cta {
                padding: 10px 0;
            }
            .sticky-cta .container {
                justify-content: center;
            }
            .sticky-form .btn {
                padding: 0 18px;
            }
        }
        @media (max-width: 440px) {
            .sticky-form input {
                display: none;
            }
        }