/* roulang page: index */
:root {
  --bg-base: #0A1628;
  --bg-deep: #071019;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-hover: rgba(255,255,255,0.08);
  --glass-border: rgba(255,255,255,0.12);
  --glass-border-hover: rgba(255,255,255,0.2);
  --primary-blue: #1B7DFF;
  --primary-cyan: #0FA3FF;
  --accent-orange: #FF9F45;
  --text-primary: #EAF1FF;
  --text-secondary: #A8B9D6;
  --text-muted: #6B7FA3;
  --success: #4ADE80;
  --danger: #FF6B6B;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-tag: 6px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.5);
  --shadow-glow-blue: 0 0 24px rgba(27,125,255,0.4);
  --shadow-glow-orange: 0 0 24px rgba(255,159,69,0.4);
  --space-section: 96px;
  --space-mobile: 56px;
  --sidebar-width: 240px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
  --font-en: "Inter", "DIN Alternate", "Roboto", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
}

a { color: var(--primary-blue); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-cyan); }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ul { list-style: none; }

h1, h2, h3, h4 { line-height: 1.3; font-weight: 600; color: var(--text-primary); }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 56px;
}

/* ============ 左侧 App Shell 导航 ============ */
.app-shell {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: rgba(6,14,26,0.95);
  border-right: 1px solid rgba(255,255,255,0.08);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.app-shell .logo-area {
  padding: 24px 20px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.logo-mark {
  width: 36px; height: 36px;
  flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(27,125,255,0.2), rgba(255,159,69,0.15));
  border: 1px solid rgba(27,125,255,0.4);
  position: relative;
  display: flex; align-items: center; justify-content: center;
}

.logo-mark::before {
  content: '';
  width: 16px; height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #0FA3FF, #1B7DFF);
  box-shadow: 0 0 12px rgba(27,125,255,0.6);
  position: relative;
  z-index: 1;
}

.logo-mark::after {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-orange);
  box-shadow: 0 0 10px rgba(255,159,69,0.7);
  position: absolute;
  bottom: 6px; right: 6px;
}

.logo-text {
  font-size: 16px;
  font-weight: 600;
  color: #EAF1FF;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.app-nav {
  flex: 1;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: background .2s, color .2s;
}

.nav-item:hover {
  background: rgba(27,125,255,0.16);
  color: var(--text-primary);
}

.nav-item:hover::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 20px;
  border-radius: 0 3px 3px 0;
  background: rgba(27,125,255,0.6);
}

.nav-item.active {
  background: rgba(27,125,255,0.22);
  color: var(--text-primary);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 20px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, #1B7DFF, #FF9F45);
}

.nav-item .nav-icon {
  margin-right: 12px;
  width: 18px; height: 18px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sidebar-contact {
  margin: 16px;
  padding: 16px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 12px;
  color: var(--text-secondary);
}

.sidebar-contact .contact-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.sidebar-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  line-height: 1.5;
}

.sidebar-contact svg {
  width: 14px; height: 14px;
  stroke: var(--accent-orange);
  flex-shrink: 0;
}

/* ============ 移动端顶部栏 ============ */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: rgba(6,14,26,0.98);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  z-index: 2000;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

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

.mobile-header .burger svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; }

.mobile-logo {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 8px;
}

.mobile-logo .logo-mark { width: 28px; height: 28px; }
.mobile-logo .logo-mark::before { width: 12px; height: 12px; }
.mobile-logo .logo-mark::after { width: 6px; height: 6px; }

.mobile-cta {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, #FF9F45, #FF7A2F);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 0 16px rgba(255,159,69,0.3);
}

/* ============ 抽屉菜单 ============ */
.drawer-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 3000;
  opacity: 0;
  transition: opacity .3s ease;
}

.drawer-overlay.visible { opacity: 1; }

.mobile-drawer {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 320px;
  height: 100vh;
  background: rgba(6,14,26,0.98);
  z-index: 3001;
  transform: translateX(-100%);
  transition: transform .3s ease;
  flex-direction: column;
  border-right: 1px solid rgba(255,255,255,0.1);
}

.mobile-drawer.open { transform: translateX(0); }

.drawer-header {
  padding: 20px 20px 16px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.drawer-header .logo { display: flex; align-items: center; gap: 10px; }

.drawer-close {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-secondary);
}

.drawer-close svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; }

.drawer-nav {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.drawer-nav .nav-item { height: 44px; font-size: 15px; }

.drawer-contact {
  margin: 16px;
  padding: 16px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: var(--text-secondary);
}

.drawer-contact p { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }

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

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: all .25s ease;
  outline: none;
  border: none;
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-cyan);
  outline-offset: 3px;
}

.btn-primary {
  background: linear-gradient(135deg, #1B7DFF, #0FA3FF);
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
}

.btn-primary:hover {
  box-shadow: 0 0 32px rgba(27,125,255,0.6);
  transform: translateY(-2px);
  color: #fff;
}

.btn-primary:active { transform: translateY(0) scale(0.98); box-shadow: 0 0 16px rgba(27,125,255,0.4); }

.btn-glass {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text-primary);
}

.btn-glass:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.35);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.btn-glass:active { transform: translateY(0) scale(0.98); }

.btn-orange {
  background: linear-gradient(135deg, #FF9F45, #FF7A2F);
  color: #fff;
  box-shadow: 0 0 20px rgba(255,159,69,0.4);
  position: relative;
  overflow: hidden;
}

.btn-orange::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left .4s ease;
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(255,159,69,0.6);
  color: #fff;
}

.btn-orange:hover::after { left: 100%; }

.btn-orange:active { transform: translateY(0) scale(0.98); }

.btn-blue-outline {
  background: transparent;
  border: 1px solid var(--primary-blue);
  color: var(--primary-cyan);
}

.btn-blue-outline:hover {
  background: rgba(27,125,255,0.1);
  transform: translateY(-2px);
  color: var(--primary-cyan);
}

.btn-blue-outline:active { transform: translateY(0) scale(0.98); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary-cyan);
  font-size: 14px;
  font-weight: 500;
  transition: gap .25s ease;
}

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

.text-link .arrow { transition: transform .25s ease; }

.text-link:hover .arrow { transform: translateX(4px); }

/* ============ 徽章/标签 ============ */
.tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: 6px;
  background: rgba(27,125,255,0.12);
  border: 1px solid rgba(27,125,255,0.25);
  color: var(--primary-cyan);
  font-size: 12px;
  font-weight: 500;
}

.tag-orange {
  background: rgba(255,159,69,0.12);
  border-color: rgba(255,159,69,0.3);
  color: var(--accent-orange);
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, #FF9F45, #FF7A2F);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 0 10px rgba(255,159,69,0.3);
}

/* ============ 板块通用 ============ */
.section { padding: var(--space-section) 0; position: relative; }

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

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #7FB4FF;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.section-kicker::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary-cyan);
  box-shadow: 0 0 8px rgba(27,125,255,0.6);
}

.section-header h2 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ============ Hero ============ */
.hero {
  min-height: 72vh;
  min-height: 560px;
  padding: 80px 56px;
  position: relative;
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(27,125,255,0.22) 0%, transparent 50%),
    radial-gradient(circle at 85% 75%, rgba(255,159,69,0.1) 0%, transparent 40%);
}

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-left { display: flex; flex-direction: column; gap: 24px; }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  height: 32px;
  padding: 0 14px;
  border-radius: 8px;
  background: rgba(27,125,255,0.1);
  border: 1px solid rgba(27,125,255,0.2);
  color: #7FB4FF;
  font-size: 13px;
  font-weight: 500;
}

.hero-kicker::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #0FA3FF;
  box-shadow: 0 0 8px rgba(27,125,255,0.7);
}

.hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #1B7DFF, #0FA3FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding: 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.stat-item { text-align: center; }

.stat-num {
  display: block;
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: 700;
  background: linear-gradient(135deg, #EAF1FF, #7FB4FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-right { position: relative; }

.hero-img {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.12);
}

.hero-img img {
  width: 100%;
  height: 460px;
  object-fit: cover;
}

.hero-img::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(180deg, rgba(10,22,40,0) 60%, rgba(10,22,40,0.8) 100%);
}

/* ============ 价值主张 ============ */
.about {
  padding: var(--space-section) 56px;
  background: transparent;
  position: relative;
}

.about-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}

.about-left { display: flex; flex-direction: column; gap: 20px; }

.about-left h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
}

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

.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }

.about-right { position: relative; min-height: 380px; }

.stack-cards { position: relative; height: 380px; }

.stack-cards img {
  position: absolute;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.12);
  object-fit: cover;
}

.stack-cards img:nth-child(1) {
  width: 75%;
  height: 68%;
  top: 0; left: 0;
  z-index: 3;
}

.stack-cards img:nth-child(2) {
  width: 65%;
  height: 55%;
  top: 30%;
  left: 30%;
  z-index: 2;
  border: 2px solid rgba(255,255,255,0.08);
}

.stack-cards img:nth-child(3) {
  width: 55%;
  height: 45%;
  bottom: 0;
  left: 8%;
  z-index: 1;
}

/* ============ 业务矩阵 ============ */
.business {
  padding: var(--space-section) 56px;
  background: linear-gradient(180deg, transparent, rgba(27,125,255,0.04), transparent);
}

.business-inner { max-width: 1280px; margin: 0 auto; }

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

.biz-card {
  padding: 28px 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all .3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 220px;
}

.biz-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  box-shadow: var(--shadow-hover);
}

.biz-card:hover .biz-icon svg { stroke: var(--accent-orange); }

.biz-card:hover .biz-icon { box-shadow: 0 0 20px rgba(255,159,69,0.25); }

.biz-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(27,125,255,0.12);
  border: 1px solid rgba(27,125,255,0.2);
  transition: all .3s ease;
  margin-bottom: 4px;
}

.biz-icon svg {
  width: 22px; height: 22px;
  stroke: #0FA3FF;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .3s ease;
}

.biz-card h3 { font-size: 17px; font-weight: 600; }

.biz-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

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

.biz-card .card-link .arrow { transition: transform .2s; }
.biz-card .card-link:hover .arrow { transform: translateX(3px); }

/* ============ 使用场景 ============ */
.scenarios {
  padding: var(--space-section) 56px;
}

.scenarios-inner { max-width: 1280px; margin: 0 auto; }

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.scenario-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  padding: 32px;
  border-radius: 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.scenario-card.reverse .scenario-img { order: 2; }
.scenario-card.reverse .scenario-text { order: 1; }

.scenario-img {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  height: 280px;
}

.scenario-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scenario-text { display: flex; flex-direction: column; gap: 14px; }

.scenario-text h3 { font-size: 20px; font-weight: 600; }

.scenario-text p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
}

.scenario-list-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.scenario-list-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.scenario-list-points li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-orange);
  box-shadow: 0 0 6px rgba(255,159,69,0.4);
  flex-shrink: 0;
}

/* ============ 成功案例 ============ */
.cases {
  padding: var(--space-section) 56px;
  background: linear-gradient(180deg, transparent, rgba(255,159,69,0.03), transparent);
}

.cases-inner { max-width: 1280px; margin: 0 auto; }

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

.case-card {
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  transition: all .3s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255,255,255,0.2);
}

.case-cover {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-cover::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(180deg, rgba(10,22,40,0.1), rgba(10,22,40,0.6));
}

.case-body { padding: 20px 24px 24px; }

.case-tag {
  display: inline-block;
  height: 22px;
  line-height: 22px;
  padding: 0 10px;
  border-radius: 6px;
  background: rgba(255,159,69,0.12);
  border: 1px solid rgba(255,159,69,0.3);
  color: var(--accent-orange);
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 10px;
}

.case-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.cases-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 40px;
  padding: 32px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.cases-stats .stat-num {
  font-size: 32px;
  color: var(--accent-orange);
  -webkit-text-fill-color: initial;
  background: none;
  text-align: center;
}

.cases-stats .stat-label {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* ============ 合作模式 ============ */
.pricing {
  padding: var(--space-section) 56px;
}

.pricing-inner { max-width: 1280px; margin: 0 auto; }

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

.price-card {
  padding: 32px 28px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: all .3s ease;
}

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

.price-card.featured {
  background: rgba(27,125,255,0.08);
  border: 1px solid transparent;
  background-image: linear-gradient(rgba(10,22,40,0.85), rgba(10,22,40,0.85)), linear-gradient(135deg, #1B7DFF, #0FA3FF, #FF9F45);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  border: 1.5px solid transparent;
  box-shadow: var(--shadow-glow-blue);
}

.price-card.featured .price-name {
  font-size: 18px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.price-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.price-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.price-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.price-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.price-list li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--primary-cyan);
  flex-shrink: 0;
  margin-top: 7px;
  box-shadow: 0 0 6px rgba(27,125,255,0.4);
}

.price-card.featured .price-list li::before { background: var(--accent-orange); box-shadow: 0 0 6px rgba(255,159,69,0.4); }

.price-card .btn { width: 100%; }

/* ============ FAQ ============ */
.faq {
  padding: var(--space-section) 56px;
}

.faq-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.faq-list {
  border-radius: 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0 24px;
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: color .2s;
  gap: 16px;
}

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

.faq-question .faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(27,125,255,0.1);
  border: 1px solid rgba(27,125,255,0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform .3s ease, background .3s, border-color .3s;
}

.faq-question .faq-icon svg {
  width: 12px; height: 12px;
  stroke: var(--primary-cyan);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
  background: rgba(255,159,69,0.12);
  border-color: rgba(255,159,69,0.3);
}

.faq-item.open .faq-question .faq-icon svg { stroke: var(--accent-orange); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease, padding .3s ease;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

/* ============ CTA ============ */
.cta-section {
  padding: var(--space-section) 56px;
}

.cta-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.cta-panel {
  position: relative;
  padding: 64px 56px;
  border-radius: 20px;
  text-align: center;
  background: linear-gradient(135deg, rgba(27,125,255,0.1), rgba(10,22,40,0.4), rgba(255,159,69,0.08));
  border: 1.5px solid transparent;
  background-image: linear-gradient(rgba(10,22,40,0.9), rgba(10,22,40,0.9)), linear-gradient(135deg, #1B7DFF, #0FA3FF, #FF9F45);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  border: 1.5px solid transparent;
  overflow: hidden;
}

.cta-panel::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(27,125,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.cta-panel h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}

.cta-panel p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  position: relative;
}

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

/* ============ 最新资讯 ============ */
.news {
  padding: var(--space-section) 56px;
}

.news-inner { max-width: 1280px; margin: 0 auto; }

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

.news-card {
  display: block;
  padding: 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  transition: all .3s ease;
  position: relative;
}

.news-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  box-shadow: var(--shadow-hover);
}

.news-card .news-category {
  display: inline-block;
  height: 22px;
  line-height: 22px;
  padding: 0 10px;
  border-radius: 6px;
  background: rgba(27,125,255,0.1);
  border: 1px solid rgba(27,125,255,0.2);
  color: #7FB4FF;
  font-size: 11px;
  font-weight: 500;
  margin-bottom: 12px;
}

.news-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.5;
}

.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

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

.news-empty {
  grid-column: 1 / -1;
  padding: 48px 24px;
  border-radius: 16px;
  border: 1.5px dashed rgba(255,255,255,0.2);
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* ============ 页脚 ============ */
.site-footer {
  margin-left: var(--sidebar-width);
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(6,14,26,0.7);
  padding: 48px 56px 24px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer-brand .logo-text { font-size: 17px; }

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 12px;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }

.footer-col a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color .2s;
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.footer-contact-item svg {
  width: 15px; height: 15px;
  stroke: var(--accent-orange);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  max-width: 1280px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ 响应式 ============ */
@media (max-width: 1200px) {
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 60px 40px; }
  .hero h1 { font-size: 34px; }
  .about-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .site-footer { padding: 40px 40px 24px; }
  .section { padding: 80px 40px; }
  .news { padding: 80px 40px; }
  .faq { padding: 80px 40px; }
  .cta-section { padding: 80px 40px; }
  .pricing { padding: 80px 40px; }
  .scenarios { padding: 80px 40px; }
  .cases { padding: 80px 40px; }
  .business { padding: 80px 40px; }
}

@media (max-width: 1024px) {
  .app-shell { display: none; }
  .main-content { margin-left: 0; }
  .mobile-header { display: flex; }
  .mobile-drawer { display: flex; }
  .site-footer { margin-left: 0; }
  .hero { padding: 96px 32px 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-img img { height: 360px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .stack-cards { height: 320px; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .cases-grid { grid-template-columns: 1fr; }
  .cases-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .news-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .hero { padding: 88px 20px 40px; }
  .hero h1 { font-size: 28px; }
  .hero-subtitle { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); padding: 16px; gap: 8px; }
  .stat-num { font-size: 24px; }
  .section { padding: 56px 20px; }
  .news { padding: 56px 20px; }
  .faq { padding: 56px 20px; }
  .cta-section { padding: 56px 20px; }
  .pricing { padding: 56px 20px; }
  .scenarios { padding: 56px 20px; }
  .cases { padding: 56px 20px; }
  .business { padding: 56px 20px; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 8px; margin-bottom: 32px; }
  .section-header h2 { font-size: 22px; }
  .business-grid { grid-template-columns: 1fr; }
  .scenario-card { grid-template-columns: 1fr; padding: 24px; gap: 20px; }
  .scenario-card.reverse .scenario-img { order: 1; }
  .scenario-card.reverse .scenario-text { order: 2; }
  .scenario-img { height: 220px; }
  .cases-grid { grid-template-columns: 1fr; }
  .cases-stats { grid-template-columns: repeat(2, 1fr); padding: 24px 16px; gap: 16px; }
  .cases-stats .stat-num { font-size: 26px; }
  .cta-panel { padding: 40px 24px; }
  .cta-panel h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .faq-list { padding: 0 16px; }
  .faq-question { font-size: 14px; padding: 16px 0; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .footer-brand p { max-width: 100%; }
  .site-footer { padding: 40px 20px 20px; }
  .about-right { min-height: 260px; }
  .stack-cards { height: 260px; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 24px; }
  .hero-subtitle { font-size: 14px; }
  .hero-stats { grid-template-columns: 1fr; gap: 16px; text-align: center; }
  .stat-num { font-size: 28px; }
  .stat-label { margin-top: 2px; }
  .biz-card { min-height: auto; padding: 24px 20px; }
  .price-card { padding: 24px 20px; }
  .cta-panel { padding: 32px 20px; }
  .cta-panel h2 { font-size: 22px; }
  .section-header h2 { font-size: 20px; }
  .scenario-card { padding: 20px; }
  .scenario-img { height: 180px; }
  .case-cover { height: 180px; }
}

/* roulang page: category2 */
:root {
  --bg-base: #0A1628;
  --bg-deep: #071019;
  --bg-elev: #0E1E36;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-hover: rgba(255, 255, 255, 0.2);
  --primary: #1B7DFF;
  --primary-light: #0FA3FF;
  --primary-glow: rgba(27, 125, 255, 0.35);
  --accent: #FF9F45;
  --accent-glow: rgba(255, 159, 69, 0.35);
  --text-main: #EAF1FF;
  --text-sub: #A8B9D6;
  --text-weak: #6B7FA3;
  --success: #4ADE80;
  --danger: #FF6B6B;
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
  --font-en: "Inter", "DIN Alternate", "Roboto", sans-serif;
  --sidebar-width: 240px;
}

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

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

body {
  font-family: var(--font-cn);
  background: var(--bg-base);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--text-main);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: #fff;
}

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

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

ul,
ol {
  list-style: none;
}

/* ===== 背景光斑 ===== */
.page-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.page-glow::before {
  content: "";
  position: absolute;
  top: -120px;
  left: 10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(27, 125, 255, 0.18) 0%, transparent 65%);
  border-radius: 50%;
}

.page-glow::after {
  content: "";
  position: absolute;
  bottom: -80px;
  right: 4%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(255, 159, 69, 0.1) 0%, transparent 60%);
  border-radius: 50%;
}

/* ===== App Shell ===== */
.app-shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.app-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background: rgba(6, 14, 26, 0.96);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 24px 16px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 20px;
}

.brand-logo {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  position: relative;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(27, 125, 255, 0.25), rgba(255, 159, 69, 0.15));
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-logo::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

.brand-logo::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  top: 6px;
  right: 6px;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

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

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  font-size: 14.5px;
  font-weight: 400;
  position: relative;
  transition: background 0.25s, color 0.25s;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.nav-item:hover {
  background: rgba(27, 125, 255, 0.16);
  color: var(--text-main);
}

.nav-item:hover::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  border-radius: 3px;
  background: var(--primary);
}

.nav-item.active {
  background: rgba(27, 125, 255, 0.22);
  color: var(--text-main);
  font-weight: 500;
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.sidebar-contact {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 20px;
}

.sidebar-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-sub);
  padding: 4px 0;
}

.sidebar-contact-item svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: var(--text-weak);
  stroke-width: 1.6;
  flex-shrink: 0;
}

.sidebar-contact-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== 移动端顶栏 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: rgba(6, 14, 26, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 200;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.mobile-hamburger {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-main);
}

.mobile-hamburger svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.mobile-brand {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.mobile-cta {
  height: 36px;
  padding: 0 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, #FF9F45, #FF7A1A);
  color: #0A1628;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(255, 159, 69, 0.3);
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background: rgba(6, 14, 26, 0.98);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 300;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 299;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

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

.mobile-drawer .brand {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 20px;
  margin-bottom: 16px;
}

.mobile-drawer .app-nav {
  gap: 2px;
}

.mobile-drawer .sidebar-contact {
  margin-top: auto;
}

/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.page-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 48px 56px 40px;
  flex: 1;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-sub);
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  color: rgba(255, 255, 255, 0.2);
}

.breadcrumb-current {
  color: var(--text-sub);
  font-weight: 500;
}

/* ===== 页面H1头部 ===== */
.page-hero {
  padding: 48px 0 40px;
  position: relative;
}

.page-hero .page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: #7FB4FF;
  background: rgba(27, 125, 255, 0.1);
  border: 1px solid rgba(27, 125, 255, 0.25);
  border-radius: 6px;
  padding: 5px 14px;
  margin-bottom: 20px;
}

.page-hero .page-kicker .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary-glow);
}

.page-hero h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.01em;
  margin-bottom: 24px;
  color: var(--text-main);
}

.page-hero h1 span {
  color: var(--primary-light);
}

.page-hero .page-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 860px;
}

/* ===== 板块标题 ===== */
.section-block {
  padding: 56px 0 0;
}

.section-block .section-head {
  margin-bottom: 36px;
}

.section-head .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: #7FB4FF;
  margin-bottom: 12px;
}

.section-head .section-kicker::before {
  content: "";
  width: 4px;
  height: 16px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.section-head h2 {
  font-size: 26px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-head p {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 720px;
  line-height: 1.7;
}

/* ===== 交替大图卡片 ===== */
.flex-card {
  display: flex;
  align-items: center;
  gap: 48px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 32px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.flex-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--shadow-hover);
}

.flex-card.reverse {
  flex-direction: row-reverse;
}

.flex-card .flex-media {
  flex: 1 1 45%;
  min-width: 0;
}

.flex-card .flex-media img {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  width: 100%;
  height: 300px;
  object-fit: cover;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.flex-card .flex-content {
  flex: 1 1 55%;
  min-width: 0;
}

.flex-card h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.4;
}

.flex-card .flex-desc {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
}

.flex-card .flex-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.flex-card .flex-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
}

.flex-card .flex-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  flex-shrink: 0;
  margin-top: 9px;
  box-shadow: 0 0 6px rgba(27, 125, 255, 0.3);
}

/* ===== 流程步骤 ===== */
.process-section {
  margin-top: 56px;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s, background 0.3s, border-color 0.3s;
}

.process-card:hover {
  transform: translateY(-4px);
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
}

.process-card .step-num {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: block;
}

.process-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.process-card p {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* ===== 相关资讯 ===== */
.news-section {
  margin-top: 56px;
  padding-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

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

.news-card:hover {
  transform: translateY(-4px);
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--shadow-hover);
}

.news-card .news-media {
  position: relative;
  height: 170px;
  overflow: hidden;
}

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

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

.news-card .news-media .news-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 159, 69, 0.9);
  color: #0A1628;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-xs);
}

.news-card .news-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.news-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

.news-card p {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-weak);
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.news-card .news-meta a {
  font-size: 12.5px;
  color: var(--primary-light);
}

.news-card .news-meta a:hover {
  color: #fff;
}

/* ===== CTA ===== */
.cta-panel {
  margin-top: 56px;
  background: var(--glass-bg);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-xl);
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -60%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(27, 125, 255, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.cta-panel::after {
  content: "";
  position: absolute;
  bottom: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 159, 69, 0.12) 0%, transparent 55%);
  pointer-events: none;
}

.cta-panel h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-panel p {
  font-size: 15.5px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  padding: 13px 28px;
  font-size: 15px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  line-height: 1.4;
  text-decoration: none;
}

.btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 20px rgba(27, 125, 255, 0.35);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(27, 125, 255, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 12px rgba(27, 125, 255, 0.3);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(27, 125, 255, 0.5);
  outline-offset: 2px;
}

.btn-ghost {
  background: transparent;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--text-main);
  transform: translateY(-2px);
}

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

.btn-ghost:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.25);
  outline-offset: 2px;
}

.btn-accent {
  background: linear-gradient(135deg, #FF9F45, #FF7A1A);
  color: #0A1628;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(255, 159, 69, 0.3);
}

.btn-accent:hover {
  color: #0A1628;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255, 159, 69, 0.45);
}

.btn-accent:active {
  transform: translateY(0);
  box-shadow: 0 2px 12px rgba(255, 159, 69, 0.25);
}

.btn-accent:focus-visible {
  outline: 3px solid rgba(255, 159, 69, 0.5);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.45;
  pointer-events: none;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 56px 56px 0;
  margin-left: var(--sidebar-width);
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .logo-mark {
  display: inline-flex;
  width: 32px;
  height: 32px;
  vertical-align: middle;
  margin-right: 8px;
  background: linear-gradient(135deg, rgba(27, 125, 255, 0.3), rgba(255, 159, 69, 0.2));
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  align-items: center;
  justify-content: center;
}

.footer-brand .logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-top: 14px;
}

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

.footer-col ul li {
  padding: 6px 0;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-col ul li a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--text-weak);
  stroke-width: 1.6;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0 22px;
  text-align: center;
  font-size: 13px;
  color: var(--text-weak);
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .page-container {
    padding: 40px 32px 32px;
  }

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

  .flex-card {
    padding: 32px;
    gap: 32px;
  }

  .flex-card .flex-media img {
    height: 260px;
  }
}

@media (max-width: 1024px) {
  .app-sidebar {
    display: none;
  }

  .mobile-header {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }

  .site-footer {
    margin-left: 0;
    padding: 40px 20px 0;
  }

  .page-container {
    padding: 32px 24px 24px;
  }

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

  .flex-card {
    flex-direction: column !important;
    padding: 24px;
    gap: 24px;
  }

  .flex-card .flex-media {
    width: 100%;
  }

  .flex-card .flex-media img {
    height: 220px;
  }

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

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

@media (max-width: 768px) {
  .page-hero h1 {
    font-size: 24px;
  }

  .page-hero .page-desc {
    font-size: 15px;
  }

  .page-container {
    padding: 24px 16px 20px;
  }

  .section-head h2 {
    font-size: 21px;
  }

  .flex-card {
    padding: 20px;
  }

  .flex-card h3 {
    font-size: 18px;
  }

  .flex-card .flex-desc {
    font-size: 14px;
  }

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

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

  .cta-panel {
    padding: 32px 20px;
  }

  .cta-panel h2 {
    font-size: 22px;
  }

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

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

@media (max-width: 520px) {
  .brand-name {
    font-size: 15px;
  }

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

  .mobile-cta {
    padding: 0 12px;
    font-size: 12px;
  }

  .page-hero h1 {
    font-size: 21px;
    line-height: 1.4;
  }

  .breadcrumb {
    font-size: 12px;
  }

  .flex-card .flex-media img {
    height: 180px;
  }

  .news-card .news-media {
    height: 150px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category3 */
:root {
  --bg: #0A1628;
  --bg-deep: #071019;
  --glass: rgba(255,255,255,0.04);
  --glass-hover: rgba(255,255,255,0.08);
  --stroke: rgba(255,255,255,0.12);
  --stroke-hover: rgba(255,255,255,0.2);
  --primary: #1B7DFF;
  --primary-light: #0FA3FF;
  --orange: #FF9F45;
  --text: #EAF1FF;
  --text-2: #A8B9D6;
  --text-3: #6B7FA3;
  --success: #4ADE80;
  --danger: #FF6B6B;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.5);
  --font-cn: "PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans SC",sans-serif;
  --font-en: "Inter","DIN Alternate","Roboto",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.container{max-width:1220px;margin:0 auto;padding:0 56px}
.glass-card{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-md);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
  transition:all .35s ease;
}
.glass-card:hover{
  background:var(--glass-hover);
  border-color:var(--stroke-hover);
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:500;
  color:#7FB4FF;
  letter-spacing:0.08em;
}
.kicker::before{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 10px rgba(255,159,69,0.8);
}
.section-head{margin-bottom:48px}
.section-head h2{
  font-size:28px;
  font-weight:600;
  line-height:1.3;
  margin-top:12px;
}
.section-head p{
  color:var(--text-2);
  margin-top:10px;
  max-width:640px;
  font-size:15px;
}
/* ===== 按钮体系 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:500;
  line-height:1.2;
  transition:all .3s ease;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;pointer-events:none}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  box-shadow:0 6px 24px rgba(27,125,255,0.4);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 32px rgba(27,125,255,0.55);
}
.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,0.22);
  color:var(--text);
}
.btn-outline:hover{
  border-color:rgba(255,255,255,0.5);
  background:rgba(255,255,255,0.06);
}
.btn-ghost{
  background:transparent;
  color:#7FB4FF;
  border-color:transparent;
  padding:12px 8px;
}
.btn-ghost:hover{color:var(--text);}
.btn-ghost .arrow{transition:transform .3s}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-orange{
  background:linear-gradient(135deg,#FF9F45,#FF8A2A);
  color:#0A1628;
  font-weight:600;
  box-shadow:0 6px 24px rgba(255,159,69,0.4);
  position:relative;
  overflow:hidden;
}
.btn-orange:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 36px rgba(255,159,69,0.55);
}
.btn-orange::after{
  content:'';
  position:absolute;
  top:0;left:-100%;
  width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,0.35),transparent);
  transform:skewX(-20deg);
  transition:left .5s;
}
.btn-orange:hover::after{left:150%}
/* ===== App Shell 布局 ===== */
.app-shell{display:flex;min-height:100vh}
.app-sidebar{
  width:240px;
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:300;
  background:rgba(6,14,26,0.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-right:1px solid rgba(255,255,255,0.08);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  transition:transform .3s ease;
}
.sidebar-logo{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 8px;
  margin-bottom:34px;
}
.logo-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  position:relative;
  flex-shrink:0;
  box-shadow:0 0 16px rgba(27,125,255,0.4);
}
.logo-mark::after{
  content:'';
  position:absolute;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--orange);
  bottom:4px;right:4px;
  box-shadow:0 0 12px rgba(255,159,69,0.8);
}
.logo-text{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
  letter-spacing:0.02em;
}
.app-nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  flex:1;
}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 16px;
  border-radius:10px;
  color:var(--text-2);
  font-size:14px;
  font-weight:400;
  position:relative;
  transition:all .25s ease;
  border:1px solid transparent;
}
.nav-item svg{
  width:19px;height:19px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex-shrink:0;
}
.nav-item:hover{
  background:rgba(27,125,255,0.16);
  color:var(--text);
}
.nav-item.active{
  background:rgba(27,125,255,0.22);
  color:var(--text);
  border-color:rgba(27,125,255,0.1);
}
.nav-item.active::before{
  content:'';
  position:absolute;
  left:-1px;
  top:12px;bottom:12px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--orange));
}
.sidebar-contact{
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.09);
  border-radius:12px;
  padding:14px 14px 10px;
}
.sidebar-contact-title{
  font-size:12px;
  color:var(--text-3);
  margin-bottom:10px;
  letter-spacing:0.04em;
}
.sidebar-contact-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--text-2);
  margin-bottom:8px;
  line-height:1.4;
}
.sidebar-contact-item svg{
  width:14px;height:14px;
  fill:none;
  stroke:var(--primary-light);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex-shrink:0;
}
/* 移动端顶栏 */
.mobile-header{
  display:none;
  position:sticky;
  top:0;
  z-index:400;
  height:56px;
  background:rgba(10,22,40,0.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.08);
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
}
.mobile-burger{
  width:40px;height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  color:var(--text);
  transition:background .2s;
}
.mobile-burger:hover{background:rgba(255,255,255,0.08)}
.mobile-burger svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.mobile-logo{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
}
.mobile-cta{
  padding:8px 16px;
  border-radius:8px;
  background:linear-gradient(135deg,#FF9F45,#FF8A2A);
  color:#0A1628;
  font-size:13px;
  font-weight:600;
}
.sidebar-overlay{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,0.6);
  z-index:299;
  opacity:0;
  pointer-events:none;
  transition:opacity .3s;
}
.sidebar-overlay.visible{opacity:1;pointer-events:auto}
/* ===== 主内容区 ===== */
.main-wrapper{
  flex:1;
  margin-left:240px;
  min-width:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:48px 48px;
}
/* ===== Hero ===== */
.page-hero{
  position:relative;
  padding:96px 0 72px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(10,22,40,0.94) 20%,rgba(10,22,40,0.68) 60%,rgba(10,22,40,0.55));
}
.hero-bg-blur{
  position:absolute;
  width:420px;height:420px;
  background:radial-gradient(circle,rgba(27,125,255,0.15),transparent 70%);
  top:-80px;right:10%;
  pointer-events:none;
}
.hero-bg-blur-2{
  position:absolute;
  width:300px;height:300px;
  background:radial-gradient(circle,rgba(255,159,69,0.12),transparent 70%);
  bottom:-40px;left:30%;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:32px;
}
.breadcrumb a{color:var(--text-2);transition:color .2s}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb-sep{color:rgba(255,255,255,0.2)}
.breadcrumb-current{color:var(--text)}
.page-hero h1{
  font-size:36px;
  font-weight:700;
  line-height:1.25;
  max-width:820px;
  letter-spacing:0.01em;
}
.page-hero h1 .brand-divider{
  margin:0 8px;
  color:var(--orange);
  font-weight:400;
}
.page-hero h1 .brand-text{
  background:linear-gradient(90deg,var(--primary-light),var(--orange));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  font-weight:700;
}
.hero-lead{
  margin-top:20px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:680px;
}
.hero-actions{
  display:flex;
  gap:16px;
  margin-top:36px;
  flex-wrap:wrap;
}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:56px;
  max-width:620px;
}
.hero-stat{
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:14px;
  padding:20px 24px;
  backdrop-filter:blur(8px);
}
.hero-stat .num{
  font-family:var(--font-en);
  font-size:30px;
  font-weight:700;
  color:var(--text);
  line-height:1.2;
}
.hero-stat .num em{color:var(--orange);font-style:normal}
.hero-stat .label{
  font-size:12px;
  color:var(--text-3);
  margin-top:6px;
}
/* ===== 通用 Section ===== */
.section{padding:88px 0;position:relative}
.section-alt{
  background:linear-gradient(180deg,rgba(7,16,25,0.6),transparent);
}
/* ===== 细分方向 ===== */
.solution-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.solution-card{
  padding:32px 28px;
  position:relative;
  overflow:hidden;
}
.solution-card::before{
  content:'';
  position:absolute;
  top:0;left:0;
  width:100%;height:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
  opacity:0;
  transition:opacity .3s;
}
.solution-card:hover::before{opacity:1}
.solution-num{
  font-family:var(--font-en);
  font-size:48px;
  font-weight:700;
  color:rgba(255,255,255,0.08);
  line-height:1;
  margin-bottom:20px;
  transition:all .35s;
  letter-spacing:-0.02em;
}
.solution-card:hover .solution-num{
  color:var(--orange);
  text-shadow:0 0 20px rgba(255,159,69,0.5);
}
.solution-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:12px;
}
.solution-card p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.75;
}
.solution-points{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.solution-points li{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
}
.solution-points li::before{
  content:'';
  width:5px;height:5px;
  border-radius:50%;
  background:var(--primary-light);
  flex-shrink:0;
}
/* ===== 服务优势 ===== */
.strengths-layout{
  display:grid;
  grid-template-columns:40% 60%;
  gap:64px;
  align-items:center;
}
.strengths-left h2{
  font-size:28px;
  font-weight:600;
  line-height:1.35;
  margin-top:12px;
}
.strengths-left p{
  color:var(--text-2);
  margin-top:16px;
  font-size:15px;
  line-height:1.8;
}
.strengths-left .btn{margin-top:28px}
.strengths-right{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.strength-item{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-md);
  padding:28px 24px;
  transition:all .35s;
}
.strength-item:hover{
  background:var(--glass-hover);
  border-color:var(--stroke-hover);
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.strength-item svg{
  width:34px;height:34px;
  fill:none;
  stroke:var(--primary-light);
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
  margin-bottom:20px;
}
.strength-item h3{
  font-size:16px;
  font-weight:600;
  margin-bottom:8px;
}
.strength-item p{
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
}
/* ===== 适用场景 ===== */
.scenario-list{display:flex;flex-direction:column;gap:32px}
.scenario-card{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  padding:0;
  min-height:300px;
}
.scenario-card.rev .scenario-img{order:2}
.scenario-img{
  position:relative;
  min-height:300px;
  overflow:hidden;
}
.scenario-img img{
  width:100%;height:100%;
  object-fit:cover;
  position:absolute;
  inset:0;
  transition:transform .6s;
}
.scenario-card:hover .scenario-img img{transform:scale(1.03)}
.scenario-img::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(10,22,40,0.35));
}
.scenario-content{
  padding:40px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.scenario-content h3{
  font-size:22px;
  font-weight:600;
  margin-bottom:14px;
}
.scenario-content p{
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  margin-bottom:18px;
}
.scenario-content ul{display:flex;flex-direction:column;gap:10px}
.scenario-content ul li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
}
.scenario-content ul li::before{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--orange);
  margin-top:8px;
  flex-shrink:0;
}
/* ===== 运营流程 ===== */
.process-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
}
.process-step{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius-md);
  padding:28px 20px;
  text-align:left;
  position:relative;
  transition:all .3s;
}
.process-step:hover{
  border-color:var(--primary);
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.step-num{
  font-family:var(--font-en);
  font-size:38px;
  font-weight:700;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  line-height:1;
  display:block;
  margin-bottom:18px;
}
.process-step h3{
  font-size:15px;
  font-weight:600;
  margin-bottom:8px;
}
.process-step p{
  font-size:13px;
  color:var(--text-3);
  line-height:1.6;
}
/* ===== FAQ ===== */
.faq-wrap{
  max-width:880px;
  margin:0 auto;
  border-radius:var(--radius-lg);
  overflow:hidden;
}
.faq-item{
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:background .3s;
}
.faq-item:last-child{border-bottom:none}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:24px 28px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:background .25s;
}
.faq-question:hover{background:rgba(27,125,255,0.06)}
.faq-icon{
  width:22px;height:22px;
  fill:none;
  stroke:var(--primary-light);
  stroke-width:2;
  stroke-linecap:round;
  transition:transform .35s;
  flex-shrink:0;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease,padding .3s;
  padding:0 28px;
}
.faq-item.open .faq-answer{
  max-height:280px;
  padding-bottom:22px;
}
.faq-answer p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
  border-left:3px solid var(--primary);
  padding-left:16px;
  margin-top:2px;
}
/* ===== 相关资讯 ===== */
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.news-card{
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:14px;
  position:relative;
  overflow:hidden;
}
.news-card::before{
  content:'';
  position:absolute;
  top:0;left:0;
  width:100%;height:2px;
  background:linear-gradient(90deg,var(--orange),transparent);
  opacity:0;
  transition:opacity .3s;
}
.news-card:hover::before{opacity:1}
.news-tag{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:6px;
  background:rgba(255,159,69,0.12);
  border:1px solid rgba(255,159,69,0.35);
  font-size:12px;
  color:var(--orange);
  align-self:flex-start;
}
.news-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
}
.news-card h3 a{transition:color .25s}
.news-card h3 a:hover{color:var(--primary-light)}
.news-card p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card time{
  font-size:12px;
  color:var(--text-3);
  font-family:var(--font-en);
}
.news-thumb{
  width:100%;
  height:150px;
  border-radius:12px;
  object-fit:cover;
  border:1px solid rgba(255,255,255,0.08);
}
/* ===== CTA ===== */
.cta-panel{
  border-radius:var(--radius-lg);
  padding:56px 48px;
  text-align:center;
  position:relative;
  overflow:hidden;
  background:rgba(255,255,255,0.045);
  border:1px solid rgba(255,255,255,0.14);
  box-shadow:var(--shadow);
}
.cta-panel::before{
  content:'';
  position:absolute;
  width:320px;height:320px;
  background:radial-gradient(circle,rgba(27,125,255,0.18),transparent 70%);
  top:-60px;left:-40px;
}
.cta-panel::after{
  content:'';
  position:absolute;
  width:240px;height:240px;
  background:radial-gradient(circle,rgba(255,159,69,0.14),transparent 70%);
  bottom:-50px;right:10px;
}
.cta-panel h2{
  font-size:28px;
  font-weight:700;
  position:relative;z-index:1;
}
.cta-panel p{
  color:var(--text-2);
  margin-top:14px;
  font-size:15px;
  max-width:540px;
  margin-left:auto;margin-right:auto;
  position:relative;z-index:1;
}
.cta-actions{
  display:flex;
  justify-content:center;
  gap:16px;
  margin-top:32px;
  flex-wrap:wrap;
  position:relative;z-index:1;
}
/* ===== 页脚 ===== */
.site-footer{
  margin-top:0;
  background:rgba(6,14,26,0.8);
  border-top:1px solid rgba(255,255,255,0.08);
  padding:64px 56px 0;
  backdrop-filter:blur(8px);
}
.footer-inner{
  max-width:1220px;
  margin:0 auto;
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .logo-text{
  font-size:18px;
}
.footer-brand p{
  font-size:13px;
  color:var(--text-3);
  margin-top:14px;
  line-height:1.8;
  max-width:280px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-2);
  transition:color .25s;
}
.footer-col ul li a:hover{color:var(--primary-light)}
.footer-contact-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:12px;
}
.footer-contact-item svg{
  width:16px;height:16px;
  fill:none;
  stroke:var(--primary-light);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex-shrink:0;
}
.footer-bottom{
  max-width:1220px;
  margin:0 auto;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,0.06);
  font-size:13px;
  color:var(--text-3);
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
}
/* ===== 响应式 ===== */
@media (max-width:1200px){
  .process-grid{grid-template-columns:repeat(3,1fr)}
  .strengths-layout{grid-template-columns:1fr;gap:40px}
  .solution-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1024px){
  .app-sidebar{
    transform:translateX(-100%);
    width:300px;
    box-shadow:8px 0 40px rgba(0,0,0,0.5);
  }
  .app-sidebar.open{transform:translateX(0)}
  .main-wrapper{margin-left:0}
  .mobile-header{display:flex}
  .page-hero{padding:64px 0 56px}
  .section{padding:72px 0}
  .container{padding:0 32px}
  .site-footer{padding:48px 32px 0}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
  .solution-grid{grid-template-columns:1fr 1fr}
  .scenario-card{grid-template-columns:1fr}
  .scenario-card.rev .scenario-img{order:0}
  .scenario-img{min-height:220px}
  .scenario-img img{position:static;height:220px}
  .news-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .page-hero h1{font-size:26px}
  .hero-lead{font-size:14px}
  .hero-stats{grid-template-columns:1fr;gap:12px}
  .section{padding:56px 0}
  .container{padding:0 20px}
  .section-head h2{font-size:22px}
  .solution-grid{grid-template-columns:1fr}
  .strengths-right{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr 1fr}
  .cta-panel{padding:40px 24px}
  .cta-panel h2{font-size:22px}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:40px 20px 0}
  .hero-actions .btn{width:100%;justify-content:center}
  .cta-actions .btn{width:100%;justify-content:center}
}
@media (max-width:640px){
  .process-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media (max-width:520px){
  .page-hero h1{font-size:22px}
  .mobile-logo{font-size:13px}
  .scenario-content{padding:28px 20px}
  .faq-question{padding:20px}
  .faq-answer{padding:0 20px}
  .footer-inner{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root{
  --bg:#0A1628;
  --bg-deep:#071019;
  --surface:rgba(255,255,255,0.04);
  --surface-hover:rgba(255,255,255,0.08);
  --border:rgba(255,255,255,0.12);
  --border-hover:rgba(255,255,255,0.2);
  --primary:#1B7DFF;
  --primary-light:#0FA3FF;
  --accent:#FF9F45;
  --text:#EAF1FF;
  --text-2:#A8B9D6;
  --text-3:#6B7FA3;
  --success:#4ADE80;
  --danger:#FF6B6B;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow-md:0 8px 32px rgba(0,0,0,0.35);
  --shadow-lg:0 16px 48px rgba(0,0,0,0.5);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans SC",sans-serif;
  --font-num:"Inter","DIN Alternate","Roboto",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  background:var(--bg);
  background-image:linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:44px 44px;
  color:var(--text);
  line-height:1.7;
  font-size:15px;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}

.app-shell{display:flex;min-height:100vh}

.app-nav{
  width:240px;
  flex-shrink:0;
  background:rgba(6,14,26,0.95);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:100;
  padding:24px 14px 20px;
}
.logo-wrap{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 10px 22px;
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.logo-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(27,125,255,0.9),rgba(15,163,255,0.4));
  position:relative;
  flex-shrink:0;
}
.logo-mark::before{
  content:"";position:absolute;width:10px;height:10px;border-radius:50%;
  background:var(--accent);top:7px;right:7px;
  box-shadow:0 0 12px rgba(255,159,69,0.8);
}
.logo-mark::after{
  content:"";position:absolute;width:14px;height:2px;border-radius:2px;
  background:var(--text);left:6px;bottom:8px;
  box-shadow:0 -5px 0 var(--text);
}
.logo-text{
  font-size:16px;font-weight:600;color:#EAF1FF;letter-spacing:.02em;
  white-space:nowrap;
}

.nav-list{
  flex:1;
  display:flex;
  flex-direction:column;
  gap:4px;
  padding-top:18px;
}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 16px;
  border-radius:10px;
  color:var(--text-2);
  font-size:14px;
  font-weight:500;
  position:relative;
  transition:background .2s,color .2s;
}
.nav-item:hover{
  background:rgba(27,125,255,0.16);
  color:var(--text);
}
.nav-item:hover::before{
  content:"";position:absolute;left:0;top:20%;
  height:60%;width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);
}
.nav-item.active{
  background:rgba(27,125,255,0.22);
  color:var(--text);
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:20%;
  height:60%;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.nav-icon{
  width:18px;height:18px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex-shrink:0;
}

.nav-contact{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-contact p{
  font-size:12px;color:var(--text-3);
  margin-bottom:6px;
  line-height:1.5;
}
.nav-contact strong{
  display:block;font-size:14px;color:var(--text);
  font-family:var(--font-num);
  font-weight:600;
}
.nav-contact .mail{
  font-size:12px;color:var(--text-2);
  word-break:break-all;
  margin-top:4px;
}

.main{flex:1;margin-left:240px}

.container{
  max-width:1280px;
  padding:48px 56px;
  margin:0 auto;
}

.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--primary);transition:color .2s}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{opacity:.5}

.page-banner{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  padding:48px;
  border:1px solid var(--border);
  background:
    linear-gradient(180deg,rgba(7,16,25,0.72),rgba(7,16,25,0.9)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  margin-bottom:48px;
}
.page-banner::after{
  content:"";position:absolute;
  width:280px;height:280px;border-radius:50%;
  background:rgba(27,125,255,0.25);
  filter:blur(90px);
  top:-60px;right:-40px;
  pointer-events:none;
}
.page-banner h1{
  font-size:36px;
  font-weight:700;
  line-height:1.3;
  margin-bottom:14px;
  position:relative;z-index:1;
}
.page-banner h1 span{
  background:linear-gradient(90deg,var(--primary-light),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.page-banner p{
  max-width:660px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  position:relative;z-index:1;
}

.section{
  margin-bottom:72px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head .kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:#7FB4FF;
  letter-spacing:.06em;
  font-weight:500;
  margin-bottom:6px;
}
.section-head .kicker::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px rgba(255,159,69,0.8);
}
.section-head h2{
  font-size:26px;
  font-weight:600;
  line-height:1.3;
}

.timeline{
  position:relative;
  padding-left:0;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  transform:translateX(-50%);
  opacity:0.5;
}
.timeline-node{
  position:relative;
  display:flex;
  align-items:center;
  gap:48px;
  margin-bottom:56px;
}
.timeline-node:last-child{margin-bottom:0}
.timeline-node::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--bg);
  border:3px solid var(--accent);
  transform:translate(-50%,-50%);
  box-shadow:0 0 0 6px rgba(255,159,69,0.15),0 0 20px rgba(255,159,69,0.4);
  z-index:2;
}
.timeline-media,
.timeline-content{
  width:50%;
}
.timeline-media img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:14px;
  border:1px solid var(--border);
  box-shadow:var(--shadow-md);
}
.timeline-year{
  font-family:var(--font-num);
  font-size:42px;
  font-weight:700;
  line-height:1;
  background:linear-gradient(135deg,var(--primary-light),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:10px;
}
.timeline-content h3{
  font-size:19px;
  font-weight:600;
  margin-bottom:10px;
}
.timeline-content p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.7;
}
.timeline-node:nth-child(even) .timeline-media{order:2}
.timeline-node:nth-child(even) .timeline-content{order:1;text-align:right}

.cap-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.cap-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:transform .25s,background .25s,border-color .25s,box-shadow .25s;
  position:relative;
  overflow:hidden;
}
.cap-card::before{
  content:"";position:absolute;
  width:180px;height:180px;border-radius:50%;
  background:rgba(27,125,255,0.12);
  filter:blur(60px);
  top:-40px;right:-40px;
  transition:opacity .3s;
  opacity:0;
}
.cap-card:hover{
  transform:translateY(-4px);
  background:var(--surface-hover);
  border-color:var(--border-hover);
  box-shadow:var(--shadow-lg);
}
.cap-card:hover::before{opacity:1}
.cap-icon{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(27,125,255,0.12);
  border:1px solid rgba(27,125,255,0.3);
  margin-bottom:18px;
}
.cap-icon svg{
  width:22px;height:22px;
  stroke:var(--primary-light);
  fill:none;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:stroke .3s;
}
.cap-card:hover .cap-icon svg{stroke:var(--accent)}
.cap-card h3{
  font-size:17px;
  font-weight:600;
  margin-bottom:10px;
}
.cap-card p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.7;
}

.scene-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  margin-bottom:28px;
}
.scene-block:nth-child(even) .scene-img{order:2}
.scene-img{
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--border);
  height:260px;
}
.scene-img img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s;
}
.scene-block:hover .scene-img img{transform:scale(1.04)}
.scene-body h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:12px;
}
.scene-body p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.7;
  margin-bottom:16px;
}
.scene-body ul li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--text);
  padding:7px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.scene-body ul li:last-child{border-bottom:none}
.scene-body ul li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  margin-top:8px;
  flex-shrink:0;
}

.flow-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.flow-step{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:24px;
  position:relative;
  transition:transform .25s,border-color .25s;
}
.flow-step:hover{
  transform:translateY(-4px);
  border-color:rgba(27,125,255,0.4);
}
.flow-step::before{
  counter-increment:step;
  content:"0" counter(step);
  font-family:var(--font-num);
  font-size:32px;
  font-weight:700;
  color:rgba(27,125,255,0.35);
  line-height:1;
  display:block;
  margin-bottom:14px;
  transition:color .3s;
}
.flow-step:hover::before{color:var(--accent)}
.flow-step h3{font-size:16px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:13px;color:var(--text-2);line-height:1.6}

.faq-wrap{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:8px 28px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.faq-item{
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.faq-item:last-child{border-bottom:none}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 0;
  cursor:pointer;
  font-size:15px;
  font-weight:600;
  color:var(--text);
}
.faq-q .plus{
  width:28px;height:28px;
  border-radius:8px;
  background:rgba(27,125,255,0.12);
  border:1px solid rgba(27,125,255,0.3);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;
  line-height:1;
  color:var(--primary-light);
  transform:rotate(0deg);
  transition:transform .3s;
  flex-shrink:0;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a-inner{
  padding-bottom:20px;
  color:var(--text-2);
  font-size:14px;
  line-height:1.7;
}

.cta-panel{
  position:relative;
  background:var(--surface);
  border:1.5px solid transparent;
  border-radius:var(--radius-lg);
  padding:44px 40px;
  text-align:center;
  overflow:hidden;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  background-image:linear-gradient(var(--bg),var(--bg)),linear-gradient(90deg,var(--primary),var(--primary-light),var(--accent));
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.cta-panel::before{
  content:"";position:absolute;
  width:300px;height:300px;border-radius:50%;
  background:rgba(27,125,255,0.2);
  filter:blur(80px);
  top:-80px;left:50%;transform:translateX(-50%);
  pointer-events:none;
}
.cta-panel h2{
  font-size:26px;font-weight:600;
  margin-bottom:10px;
  position:relative;z-index:1;
}
.cta-panel p{
  color:var(--text-2);
  font-size:15px;
  margin-bottom:24px;
  position:relative;z-index:1;
}
.cta-btns{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
  position:relative;z-index:1;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 28px;
  border-radius:var(--radius-sm);
  font-size:14px;
  font-weight:600;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;
  outline:none;
}
.btn:focus-visible{
  outline:3px solid rgba(27,125,255,0.4);
  outline-offset:2px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  box-shadow:0 0 24px rgba(27,125,255,0.35);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 34px rgba(27,125,255,0.5);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 12px rgba(27,125,255,0.3);
}
.btn-cta{
  background:linear-gradient(135deg,#FFB35C,#FF9F45);
  color:#1A1206;
  box-shadow:0 0 24px rgba(255,159,69,0.3);
  overflow:hidden;
  position:relative;
}
.btn-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 0 34px rgba(255,159,69,0.45);
}
.btn-cta::before{
  content:"";position:absolute;
  top:0;left:-100%;
  width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,0.35),transparent);
  transform:skewX(-20deg);
  transition:left .4s;
}
.btn-cta:hover::before{left:130%}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,0.25);
  color:var(--text);
}
.btn-ghost:hover{
  background:rgba(255,255,255,0.08);
  border-color:rgba(255,255,255,0.45);
}

.site-footer{
  border-top:1px solid rgba(255,255,255,0.08);
  margin-left:240px;
  background:rgba(4,10,18,0.6);
  padding:48px 56px 24px;
}
.footer-inner{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:40px;
  max-width:1280px;
  margin:0 auto;
}
.footer-brand .logo-text{font-size:17px}
.footer-brand p{
  font-size:13px;color:var(--text-3);
  margin-top:12px;
  line-height:1.7;
  max-width:240px;
}
.footer-col h4{
  font-size:14px;font-weight:600;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul a{
  font-size:13px;
  color:var(--text-2);
  transition:color .2s;
}
.footer-col ul a:hover{color:var(--primary-light)}
.footer-contact-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:12px;
}
.footer-contact-item svg{
  width:16px;height:16px;
  stroke:var(--primary-light);
  fill:none;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex-shrink:0;
}
.footer-bottom{
  max-width:1280px;
  margin:32px auto 0;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,0.06);
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

.topbar{
  display:none;
}
.mobile-nav-toggle{display:none}

@media(max-width:1200px){
  .container{padding:40px 32px}
  .site-footer{padding:40px 32px 24px}
}

@media(max-width:1024px){
  .app-nav{
    transform:translateX(-100%);
    transition:transform .3s ease;
    width:300px;
    box-shadow:var(--shadow-lg);
  }
  .app-nav.open{transform:translateX(0)}
  .nav-overlay{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(4,8,16,0.6);
    z-index:99;
    backdrop-filter:blur(2px);
  }
  .nav-overlay.show{display:block}
  .topbar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:56px;
    padding:0 20px;
    background:rgba(6,14,26,0.98);
    border-bottom:1px solid var(--border);
    position:sticky;
    top:0;
    z-index:90;
  }
  .topbar .logo-wrap{
    border:none;
    padding:0;
  }
  .topbar .logo-mark{
    width:30px;height:30px;
    border-radius:8px;
  }
  .topbar .logo-text{
    font-size:15px;
  }
  .mobile-hamburger{
    width:40px;height:40px;
    border-radius:10px;
    display:flex;align-items:center;justify-content:center;
    border:1px solid var(--border);
    background:var(--surface);
  }
  .mobile-hamburger svg{
    width:20px;height:20px;
    stroke:var(--text);
    fill:none;
    stroke-width:2;
    stroke-linecap:round;
  }
  .topbar-cta{
    height:34px;padding:0 16px;
    border-radius:8px;
    background:linear-gradient(135deg,#FFB35C,#FF9F45);
    color:#1A1206;
    font-size:13px;font-weight:600;
    display:flex;align-items:center;
    box-shadow:0 0 16px rgba(255,159,69,0.3);
  }
  .main{margin-left:0}
  .site-footer{margin-left:0}
  .mobile-nav-toggle{display:block}
}

@media(max-width:768px){
  .container{padding:28px 20px}
  .site-footer{padding:32px 20px 20px}
  .page-banner{
    padding:28px 22px;
  }
  .page-banner h1{font-size:26px}
  .section-head h2{font-size:22px}
  .timeline::before{left:18px}
  .timeline-node{
    flex-direction:column;
    gap:18px;
    padding-left:48px;
    margin-bottom:44px;
  }
  .timeline-node::after{
    left:18px;
    top:10px;
    transform:translate(0,0);
  }
  .timeline-media,.timeline-content{width:100%}
  .timeline-node:nth-child(even) .timeline-media{order:1}
  .timeline-node:nth-child(even) .timeline-content{order:2;text-align:left}
  .timeline-med ia img{height:180px}
  .timeline-year{font-size:34px}
  .cap-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .scene-block{
    grid-template-columns:1fr;
    padding:22px;
    gap:20px;
  }
  .scene-block:nth-child(even) .scene-img{order:1}
  .flow-steps{
    grid-template-columns:1fr 1fr;
    gap:16px;
  }
  .faq-wrap{
    padding:4px 18px;
  }
  .cta-panel{
    padding:32px 20px;
  }
  .cta-panel h2{font-size:22px}
  .footer-inner{
    grid-template-columns:1fr 1fr;
    gap:28px;
  }
}

@media(max-width:520px){
  .flow-steps{
    grid-template-columns:1fr;
  }
  .footer-inner{
    grid-template-columns:1fr;
  }
  .timeline-media img{
    height:160px;
  }
  .btn{
    width:100%;
  }
  .cta-btns{
    flex-direction:column;
  }
}

/* roulang page: article */
:root{
  --bg-deep:#0A1628;
  --bg-base:#071019;
  --glass-bg:rgba(255,255,255,0.04);
  --glass-hover:rgba(255,255,255,0.08);
  --glass-border:rgba(255,255,255,0.12);
  --glass-border-hover:rgba(255,255,255,0.2);
  --primary:#1B7DFF;
  --primary-light:#0FA3FF;
  --accent:#FF9F45;
  --text-main:#EAF1FF;
  --text-sub:#A8B9D6;
  --text-weak:#6B7FA3;
  --success:#4ADE80;
  --danger:#FF6B6B;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow-card:0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover:0 16px 48px rgba(0,0,0,0.5);
  --glow-blue:0 8px 28px rgba(27,125,255,0.35);
  --glow-orange:0 8px 28px rgba(255,159,69,0.35);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans SC",sans-serif;
  background-color:var(--bg-deep);
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:44px 44px;
  color:var(--text-main);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,textarea{font:inherit;}
ul,ol{list-style:none;}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* 按钮体系 */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;font-size:15px;font-weight:600;border:none;cursor:pointer;
  box-shadow:var(--glow-blue);transition:all .3s;text-decoration:none;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(27,125,255,0.45);}
.btn-primary:active{transform:translateY(1px) scale(0.98);}
.btn-primary:focus-visible{outline:3px solid rgba(27,125,255,0.4);}

/* 移动端顶栏 */
.mobile-header{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:2000;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(6,14,26,0.92);backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.menu-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
  border-radius:var(--radius-sm);color:var(--text-main);cursor:pointer;transition:all .25s;
}
.menu-btn:hover{background:rgba(255,255,255,0.12);}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;}
.mobile-logo{font-size:16px;font-weight:600;color:var(--text-main);letter-spacing:0.5px;}
.mobile-cta{
  padding:8px 16px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,#FF9F45,#FF7A1A);color:#fff;font-size:13px;font-weight:600;
  box-shadow:var(--glow-orange);transition:all .25s;
}
.mobile-cta:hover{box-shadow:0 10px 30px rgba(255,159,69,0.5);transform:translateY(-1px);}

/* 抽屉遮罩 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:2100;
  opacity:0;visibility:hidden;transition:all .3s;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* 抽屉导航 */
.mobile-drawer{
  position:fixed;top:0;left:0;bottom:0;width:320px;max-width:85vw;
  background:rgba(6,14,26,0.98);backdrop-filter:blur(20px);z-index:2200;
  transform:translateX(-100%);transition:transform .35s;
  display:flex;flex-direction:column;padding:24px 16px;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-brand{
  display:flex;align-items:center;gap:10px;padding:0 12px 20px;
  border-bottom:1px solid rgba(255,255,255,0.08);margin-bottom:16px;
}
.drawer-brand .logo-text{font-size:17px;font-weight:600;color:var(--text-main);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-nav .nav-item{
  display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:var(--radius-sm);color:var(--text-sub);font-size:14px;font-weight:500;
  transition:all .25s;position:relative;
}
.drawer-nav .nav-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.drawer-nav .nav-item:hover{background:rgba(27,125,255,0.16);color:var(--text-main);}
.drawer-nav .nav-item.active{background:rgba(27,125,255,0.22);color:var(--text-main);}
.drawer-nav .nav-item.active::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--accent));
}
.drawer-contact{
  margin-top:auto;padding:16px;background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-md);
}
.drawer-contact .contact-label{font-size:12px;color:var(--text-weak);margin-bottom:4px;}
.drawer-contact .contact-value{font-size:15px;font-weight:600;color:var(--text-main);}
.drawer-contact .contact-mail{font-size:12px;color:var(--text-weak);margin-top:4px;}

/* App Shell 左侧导航 */
.app-shell{display:flex;min-height:100vh;}
.app-sidebar{
  width:240px;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;z-index:1000;
  background:rgba(6,14,26,0.95);border-right:1px solid rgba(255,255,255,0.08);
  display:flex;flex-direction:column;
}
.sidebar-brand{padding:24px 20px 20px;display:flex;align-items:center;gap:10px;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;position:relative;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 0 18px rgba(27,125,255,0.5);overflow:hidden;
}
.logo-mark::before{
  content:'';position:absolute;left:6px;top:6px;width:8px;height:8px;border-radius:50%;
  background:#fff;opacity:0.85;
}
.logo-mark::after{
  content:'';position:absolute;right:4px;bottom:4px;width:13px;height:13px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 12px rgba(255,159,69,0.8);
}
.logo-text{font-weight:600;font-size:17px;color:var(--text-main);letter-spacing:0.5px;white-space:nowrap;}
.nav-list{flex:1;padding:12px;display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;align-items:center;gap:12px;height:44px;padding:0 16px;
  border-radius:var(--radius-sm);color:var(--text-sub);font-size:14px;font-weight:500;
  transition:all .25s;position:relative;
}
.nav-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.nav-item:hover{background:rgba(27,125,255,0.16);color:var(--text-main);}
.nav-item:hover::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:3px;background:var(--primary);
}
.nav-item.active{background:rgba(27,125,255,0.22);color:var(--text-main);}
.nav-item.active::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--accent));
}
.sidebar-contact{
  margin:16px;padding:16px;border-radius:var(--radius-md);
  background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.1);
}
.sidebar-contact .contact-label{font-size:12px;color:var(--text-weak);margin-bottom:4px;}
.sidebar-contact .contact-value{font-size:15px;font-weight:600;color:var(--text-main);letter-spacing:0.3px;}
.sidebar-contact .contact-mail{font-size:12px;color:var(--text-weak);margin-top:4px;}

/* 主区域 */
.main-wrapper{
  margin-left:240px;flex:1;min-width:0;position:relative;
  background:
    radial-gradient(ellipse 60% 40% at 15% 0%,rgba(27,125,255,0.16),transparent 70%),
    radial-gradient(ellipse 50% 40% at 85% 100%,rgba(255,159,69,0.1),transparent 70%);
}
.article-main{max-width:980px;margin:0 auto;padding:56px 48px 80px;position:relative;z-index:1;}
.article-container{max-width:860px;margin:0 auto;}

/* 面包屑 */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--text-weak);margin-bottom:28px;
}
.breadcrumb a{color:var(--primary);transition:color .25s;}
.breadcrumb a:hover{color:var(--primary-light);}
.breadcrumb .sep{color:var(--text-weak);}
.breadcrumb .current{color:var(--text-sub);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头部 */
.article-header{margin-bottom:36px;}
.article-header h1{
  font-size:34px;font-weight:700;line-height:1.3;color:var(--text-main);
  margin-bottom:18px;letter-spacing:0.3px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-weak);
}
.article-meta .dot{color:var(--text-weak);}
.article-meta .meta-cat{color:var(--accent);font-weight:500;}

/* 正文排版 */
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.8;color:#D0DBEF;}
.article-body p{margin-bottom:24px;text-indent:2em;}
.article-body h2{
  font-size:24px;font-weight:600;color:var(--text-main);
  line-height:1.4;margin-top:48px;margin-bottom:16px;
  padding-top:8px;border-top:1px solid rgba(255,255,255,0.08);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--text-main);margin-top:28px;margin-bottom:12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-main);margin-top:20px;margin-bottom:8px;}
.article-body blockquote{
  border-left:3px solid var(--primary);background:rgba(27,125,255,0.06);
  border-radius:8px;padding:18px 24px;margin:28px 0;color:var(--text-sub);
}
.article-body blockquote p{text-indent:0;margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 24px;padding-left:1.6em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{padding:8px 0;line-height:1.7;color:#D0DBEF;}
.article-body ul > li + li,.article-body ol > li + li{border-top:1px solid rgba(255,255,255,0.06);}
.article-body ul ul,.article-body ol ul,.article-body ul ol,.article-body ol ol{margin-top:8px;margin-bottom:0;}
.article-body ul ul li + li,.article-body ol ul li + li,.article-body ul ol li + li,.article-body ol ol li + li{border-top:none;}
.article-body img{
  border-radius:12px;border:1px solid rgba(255,255,255,0.1);
  margin:28px auto;box-shadow:var(--shadow-card);
}
.article-body a{color:var(--primary-light);text-decoration:underline;text-decoration-color:rgba(15,163,255,0.35);text-underline-offset:4px;transition:color .25s;}
.article-body a:hover{color:var(--accent);text-decoration-color:rgba(255,159,69,0.5);}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;font-size:15px;
  margin:28px 0;background:var(--glass-bg);border-radius:var(--radius-md);
  border:1px solid rgba(255,255,255,0.1);
}
.article-body th,.article-body td{
  padding:12px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,0.06);
}
.article-body th{background:rgba(27,125,255,0.12);color:var(--text-main);font-weight:600;}
.article-body tr:last-child td{border-bottom:none;}
.article-body tr:hover{background:rgba(255,255,255,0.05);}
.article-body pre{
  background:rgba(0,0,0,0.35);border:1px solid rgba(255,255,255,0.1);
  border-radius:12px;padding:20px;overflow-x:auto;font-size:14px;line-height:1.6;margin:28px 0;
}
.article-body code{font-family:"Consolas","Monaco","Courier New",monospace;font-size:0.92em;color:#7FB4FF;}
.article-body pre code{color:#D0DBEF;}
.article-body strong{color:var(--text-main);font-weight:600;}
.article-body iframe{max-width:100%;border-radius:12px;border:1px solid rgba(255,255,255,0.1);margin:24px 0;}

/* 文章标签 */
.article-tags{max-width:760px;margin:36px auto 0;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-xs);
  background:rgba(255,159,69,0.12);border:1px solid rgba(255,159,69,0.3);
  color:var(--accent);font-size:13px;line-height:1.4;transition:all .25s;
}
.tag:hover{background:rgba(255,159,69,0.22);border-color:rgba(255,159,69,0.5);}

/* 文章底部 */
.article-footer{max-width:760px;margin:40px auto 0;padding-top:32px;border-top:1px solid rgba(255,255,255,0.08);}
.post-back{
  display:inline-flex;align-items:center;gap:8px;color:var(--text-sub);
  font-size:14px;margin-bottom:24px;transition:color .25s;font-weight:500;
}
.post-back svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s;}
.post-back:hover{color:var(--primary-light);}
.post-back:hover svg{transform:translateX(-4px);}
.post-nav{display:flex;justify-content:space-between;gap:16px;}
.post-nav-link{
  flex:1;display:flex;flex-direction:column;gap:6px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:var(--radius-md);padding:16px 20px;transition:all .3s;
  min-width:0;
}
.post-nav-link:hover{background:var(--glass-hover);border-color:var(--glass-border-hover);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.post-nav-link.next{text-align:right;}
.post-nav-label{font-size:12px;color:var(--text-weak);letter-spacing:1px;}
.post-nav-title{font-size:15px;font-weight:600;color:var(--text-main);line-height:1.5;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.post-nav-link.disabled{opacity:0.45;pointer-events:none;}

/* 相关推荐 */
.related-posts{max-width:860px;margin:48px auto 0;}
.related-posts h3{font-size:20px;font-weight:600;color:var(--text-main);margin-bottom:20px;}
.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-md);overflow:hidden;transition:all .3s;display:flex;flex-direction:column;
}
.related-card:hover{background:var(--glass-hover);border-color:var(--glass-border-hover);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.related-thumb{overflow:hidden;position:relative;}
.related-thumb img{width:100%;height:132px;object-fit:cover;transition:transform .4s;}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-thumb::after{
  content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(7,16,25,0.5));
}
.related-card h4{
  font-size:15px;font-weight:600;line-height:1.5;color:var(--text-main);
  padding:14px 16px 4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-date{display:block;padding:0 16px 14px;font-size:12px;color:var(--text-weak);margin-top:auto;}

/* 未找到状态 */
.article-notfound{
  max-width:760px;margin:40px auto;padding:64px 32px;text-align:center;
  background:rgba(255,255,255,0.02);border:1px dashed rgba(255,255,255,0.2);
  border-radius:var(--radius-lg);
}
.article-notfound h2{font-size:28px;font-weight:700;color:var(--text-main);margin-bottom:12px;}
.article-notfound p{color:var(--text-sub);font-size:15px;margin-bottom:28px;}

/* 页脚 */
.site-footer{border-top:1px solid rgba(255,255,255,0.08);padding:48px 48px 24px;background:rgba(6,14,26,0.5);position:relative;z-index:1;}
.footer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-text{font-size:18px;font-weight:600;color:var(--text-main);}
.footer-brand p{margin-top:12px;font-size:14px;color:var(--text-weak);line-height:1.7;max-width:280px;}
.footer-col h4{font-size:14px;color:var(--text-main);margin-bottom:16px;font-weight:600;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-sub);transition:color .25s;}
.footer-col a:hover{color:var(--primary-light);}
.footer-contact-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-sub);margin-bottom:12px;}
.footer-contact-item svg{width:18px;height:18px;fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.footer-bottom{
  max-width:1280px;margin:32px auto 0;padding-top:20px;
  border-top:1px solid rgba(255,255,255,0.06);
  text-align:center;font-size:13px;color:var(--text-weak);
}

/* 响应式 */
@media (max-width:1200px){
  .article-main{padding:48px 32px 72px;}
}
@media (max-width:1024px){
  .app-sidebar{display:none;}
  .mobile-header{display:flex;}
  .main-wrapper{margin-left:0;}
  .article-main{padding:72px 28px 56px;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .article-main{padding:64px 20px 48px;}
  .article-header h1{font-size:26px;}
  .article-body{font-size:16px;}
  .related-grid{grid-template-columns:1fr;}
  .post-nav{flex-direction:column;}
  .post-nav-link.next{text-align:left;}
  .footer-inner{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:36px 20px 20px;}
}
@media (max-width:520px){
  .article-main{padding:56px 16px 40px;}
  .article-header h1{font-size:23px;}
  .breadcrumb{font-size:12px;}
  .breadcrumb .current{max-width:200px;}
  .article-body{font-size:15px;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .related-thumb img{height:110px;}
  .btn-primary{padding:10px 22px;font-size:14px;}
}