/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --primary: #00F0C0;
  --accent: #FF7A00;
  --bg-base: #0A0E14;
  --bg-surface: #111923;
  --bg-elevated: #1A2230;
  --text-title: #F3F6FA;
  --text-body: #C8D0DC;
  --text-muted: #7E8A9A;
  --text-disabled: #4A5568;
  --border: #1E2734;
  --border-light: #232E3C;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 40px rgba(0, 240, 192, 0.12);
  --glow-primary: 0 0 16px rgba(0, 240, 192, 0.30);
  --glow-accent: 0 0 24px rgba(255, 122, 0, 0.25);
  --transition: 200ms cubic-bezier(0.22, 1, 0.36, 1);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "Inter", "DIN Alternate", "Roboto Mono", monospace;
  --container: 1280px;
}

/* ============ Reset & 基础 ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
::selection { background: rgba(0, 240, 192, 0.3); color: #fff; }

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

/* ============ 顶部安全线 ============ */
.header-top-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1002;
}

/* ============ Header / 导航 ============ */
.app-header {
  position: fixed;
  top: 2px;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(10, 14, 20, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}
.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.nav-logo:hover { transform: scale(1.02); }
.nav-logo-icon {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: rgba(0, 240, 192, 0.06);
  box-shadow: var(--glow-primary);
}
.nav-logo-icon svg { width: 20px; height: 20px; }
.nav-logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-title);
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.nav-logo-text em {
  font-style: normal;
  color: var(--accent);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: 32px;
}
.nav-link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 2px;
  transition: color var(--transition);
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.nav-link:hover { color: var(--text-title); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text-title); }
.nav-link.active::after { width: 100%; }
.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
  flex-shrink: 0;
}
.nav-search {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
  background: transparent;
}
.nav-search:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--glow-primary);
}
.btn-login {
  background: var(--accent);
  color: var(--bg-base);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: var(--glow-accent);
}
.btn-login:hover {
  background: #E56D00;
  box-shadow: 0 0 24px rgba(255, 122, 0, 0.4);
  transform: translateY(-2px);
}
.btn-login:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

/* 汉堡按钮 */
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: var(--transition);
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle:hover { border-color: var(--primary); }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-menu {
  position: fixed;
  top: 74px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #0D141E;
  z-index: 999;
  padding: 24px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-130%);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  overflow-y: auto;
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu .mobile-nav-link {
  display: block;
  padding: 16px 12px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text-title);
  border-bottom: 1px solid rgba(30, 39, 52, 0.6);
  transition: var(--transition);
}
.mobile-menu .mobile-nav-link:hover { color: var(--primary); padding-left: 20px; }
.mobile-menu .mobile-nav-link.active { color: var(--primary); border-left: 3px solid var(--primary); }
.mobile-menu .mobile-login-btn {
  margin-top: auto;
  background: var(--accent);
  color: var(--bg-base);
  font-weight: 600;
  font-size: 1rem;
  padding: 16px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.mobile-menu .mobile-login-btn:hover { background: #E56D00; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: 1.5px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg-base);
  box-shadow: var(--glow-accent);
}
.btn-primary:hover {
  background: #E56D00;
  box-shadow: 0 0 24px rgba(255, 122, 0, 0.4);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(0, 240, 192, 0.08);
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}
.btn-white {
  background: #fff;
  color: var(--bg-base);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(255, 255, 255, 0.25); }
.btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}
.btn-lg { padding: 16px 40px; font-size: 1.0625rem; }

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 160px 0 80px;
  background: var(--bg-base);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}
.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(0, 240, 192, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 192, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
  mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.9), transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.9), transparent 75%);
}
.hero-glow {
  position: absolute;
  top: -120px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 240, 192, 0.12) 0%, transparent 65%);
  z-index: 1;
  pointer-events: none;
}
.hero-glow-orange {
  position: absolute;
  bottom: -80px;
  left: 30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 122, 0, 0.06) 0%, transparent 60%);
  z-index: 1;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 48px;
}
.hero-text {
  flex: 1 1 55%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(0, 240, 192, 0.5);
  border-radius: var(--radius-pill);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 24px;
  background: rgba(0, 240, 192, 0.05);
}
.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-title);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero-title span {
  color: var(--accent);
}
.hero-title em {
  font-style: normal;
  color: var(--primary);
  text-shadow: 0 0 30px rgba(0, 240, 192, 0.3);
}
.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-visual {
  flex: 1 1 45%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-visual-card {
  position: relative;
  width: 100%;
  max-width: 480px;
  border: 1px solid rgba(0, 240, 192, 0.3);
  border-radius: var(--radius-lg);
  padding: 12px;
  background: rgba(17, 25, 35, 0.8);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 240, 192, 0.08);
  transform: rotate(1.5deg);
  transition: var(--transition);
}
.hero-visual-card:hover { transform: rotate(0deg) scale(1.01); }
.hero-visual-card img {
  border-radius: 12px;
  width: 100%;
  height: 320px;
  object-fit: cover;
}
.hero-visual-card::before {
  content: "认证入口";
  position: absolute;
  top: 24px;
  right: 24px;
  background: rgba(10, 14, 20, 0.75);
  border: 1px solid rgba(0, 240, 192, 0.4);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  z-index: 2;
  backdrop-filter: blur(4px);
}
.hero-card-float {
  position: absolute;
  bottom: -16px;
  left: -16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-card);
}
.hero-card-float-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(0, 240, 192, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.hero-card-float-icon svg { width: 18px; height: 18px; }
.hero-card-float-text { font-size: 0.875rem; color: var(--text-title); font-weight: 600; }
.hero-card-float-text small { display: block; font-size: 0.75rem; color: var(--text-muted); font-weight: 400; }
.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 0.8125rem;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 3;
  letter-spacing: 0.12em;
}
.hero-scroll::before {
  content: "";
  width: 1px;
  height: 32px;
  background: linear-gradient(180deg, var(--primary), transparent);
  transform: rotate(90deg);
}

/* ============ 信任数据条 ============ */
.stats-bar {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 16px 8px;
}
.stat-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.stat-number em {
  font-style: normal;
  color: var(--accent);
  font-size: 1.5rem;
  margin-left: 2px;
}
.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 8px;
  letter-spacing: 0.06em;
}

/* ============ 板块通用 ============ */
.section {
  padding: 96px 0;
}
.section-alt { background: var(--bg-base); }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.section-title-wrap { max-width: 560px; }
.section-kicker {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.14em;
  margin-bottom: 8px;
  display: block;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 650;
  line-height: 1.25;
  color: var(--text-title);
  letter-spacing: -0.02em;
  position: relative;
  padding-left: 28px;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 24px;
  height: 2px;
  background: var(--primary);
  box-shadow: var(--glow-primary);
}
.section-desc {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-top: 12px;
  line-height: 1.8;
}
.section-more {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.section-more:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.section-more svg { width: 14px; height: 14px; }
.divider {
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
  border: none;
}

/* ============ 功能分组 ============ */
.feature-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}
.feature-card {
  flex: 0 0 calc(50% - 14px);
  min-height: 240px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.feature-card:first-child {
  min-height: 320px;
  background: linear-gradient(135deg, rgba(0, 240, 192, 0.03) 0%, var(--bg-surface) 70%);
}
.feature-card:last-child { min-height: 220px; }
.feature-card:hover {
  border-color: rgba(0, 240, 192, 0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0, 240, 192, 0.5);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
  background: rgba(0, 240, 192, 0.04);
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 12px;
}
.feature-card h3::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  margin-top: 12px;
}
.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.8;
  flex: 1;
}
.feature-link {
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-end;
  transition: var(--transition);
  font-weight: 500;
}
.feature-link:hover { color: var(--accent); }
.feature-link svg { width: 14px; height: 14px; transition: transform var(--transition); }
.feature-link:hover svg { transform: translateX(4px); }

/* ============ 使用场景 ============ */
.scenario-block {
  display: flex;
  align-items: center;
  gap: 64px;
  margin-bottom: 80px;
}
.scenario-block:last-child { margin-bottom: 0; }
.scenario-block.reversed { flex-direction: row-reverse; }
.scenario-image {
  flex: 1 1 50%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: var(--transition);
}
.scenario-image:hover { border-color: rgba(0, 240, 192, 0.35); box-shadow: var(--shadow-hover); }
.scenario-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: transform 0.5s var(--transition);
}
.scenario-image:hover img { transform: scale(1.03); }
.scenario-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 20, 0.4));
  pointer-events: none;
}
.scenario-content {
  flex: 1 1 50%;
}
.scenario-tag {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.14em;
  display: inline-block;
  margin-bottom: 16px;
}
.scenario-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 16px;
  border-left: 2px solid var(--primary);
  padding-left: 16px;
  line-height: 1.4;
}
.scenario-content p {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.9;
  margin-bottom: 24px;
}
.scenario-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.scenario-link:hover { color: var(--accent); border-color: var(--accent); }
.scenario-link svg { width: 16px; height: 16px; }

/* ============ 成功案例 ============ */
.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.case-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.case-card:first-child {
  grid-column: span 2;
  flex-direction: row;
  align-items: stretch;
}
.case-card:hover {
  border-color: rgba(0, 240, 192, 0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.case-card:first-child:hover { transform: translateY(-4px); }
.case-media {
  flex-shrink: 0;
  width: 100%;
  height: 200px;
  position: relative;
  overflow: hidden;
}
.case-card:first-child .case-media {
  width: 45%;
  height: auto;
  min-height: 260px;
}
.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--transition);
}
.case-card:hover .case-media img { transform: scale(1.04); }
.case-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 14, 20, 0.5));
}
.case-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(10, 14, 20, 0.8);
  border: 1px solid rgba(0, 240, 192, 0.4);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  z-index: 2;
  backdrop-filter: blur(4px);
}
.case-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-card:first-child .case-body { padding: 36px; }
.case-company {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.case-company-logo {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.case-body p {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.8;
  flex: 1;
  margin-bottom: 16px;
}
.case-metric {
  font-family: var(--font-mono);
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.case-metric-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============ 服务方案 ============ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: center;
}
.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.pricing-card:hover { border-color: rgba(0, 240, 192, 0.25); box-shadow: var(--shadow-card); }
.pricing-card--featured {
  border: 1.5px solid var(--primary);
  box-shadow: 0 0 40px rgba(0, 240, 192, 0.08);
  z-index: 2;
  transform: scale(1.03);
  background: linear-gradient(160deg, rgba(0, 240, 192, 0.04) 0%, var(--bg-surface) 60%);
}
.pricing-card--featured:hover { box-shadow: var(--shadow-hover); }
.pricing-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--accent);
  color: var(--bg-base);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  box-shadow: var(--glow-accent);
  letter-spacing: 0.04em;
}
.pricing-header {
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.pricing-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 8px;
}
.pricing-price {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.pricing-price small {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0;
}
.pricing-features {
  flex: 1;
  margin-bottom: 28px;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9375rem;
  color: var(--text-body);
}
.pricing-features li::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 3px;
  background: rgba(0, 240, 192, 0.05);
  box-shadow: inset 0 0 0 3px var(--bg-surface);
}
.pricing-card--featured .pricing-features li::before {
  background: rgba(0, 240, 192, 0.3);
}
.pricing-cta {
  display: block;
  text-align: center;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  transition: var(--transition);
  background: transparent;
}
.pricing-cta:hover {
  background: rgba(0, 240, 192, 0.08);
  box-shadow: var(--glow-primary);
}
.pricing-card--featured .pricing-cta {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-base);
  box-shadow: var(--glow-accent);
}
.pricing-card--featured .pricing-cta:hover {
  background: #E56D00;
  box-shadow: 0 0 24px rgba(255, 122, 0, 0.4);
}

/* ============ 最新信息 ============ */
.news-section {
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.news-list {
  display: flex;
  flex-direction: column;
}
.news-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  border-radius: 12px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  align-items: flex-start;
  position: relative;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover {
  background: #151D29;
  border-left: 3px solid var(--accent);
  padding-left: 21px;
}
.news-thumb {
  width: 160px;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-elevated);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--transition);
}
.news-item:hover .news-thumb img { transform: scale(1.05); }
.news-content {
  flex: 1;
  min-width: 0;
}
.news-cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  border: 1px solid rgba(0, 240, 192, 0.5);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
  background: rgba(0, 240, 192, 0.04);
}
.news-content h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-item:hover .news-content h3 { color: var(--primary); }
.news-content p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.news-meta svg { width: 14px; height: 14px; }
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  padding: 40px;
}
.empty-state-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--text-muted);
}
.empty-state h3 {
  font-size: 1.25rem;
  color: var(--text-title);
  margin-bottom: 8px;
  font-weight: 600;
}
.empty-state p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: 24px;
}

/* ============ CTA横幅 ============ */
.cta-banner {
  position: relative;
  padding: 80px 0;
  background: var(--bg-base);
  overflow: hidden;
  border-top: 1px solid var(--border);
}
.cta-banner::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(255, 122, 0, 0.12) 0%, transparent 70%);
  z-index: 1;
}
.cta-banner::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 30%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(0, 240, 192, 0.08) 0%, transparent 70%);
  z-index: 1;
}
.cta-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.cta-text { flex: 1 1 60%; min-width: 280px; }
.cta-kicker {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
  display: block;
}
.cta-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.cta-desc {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.8;
  max-width: 520px;
}
.cta-action {
  flex-shrink: 0;
}

/* ============ Footer ============ */
.app-footer {
  background: #080B10;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, transparent, var(--primary), transparent) 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 40px;
}
.footer-brand .nav-logo-text {
  font-size: 1.25rem;
  color: var(--text-title);
  font-weight: 700;
}
.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 16px;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 20px;
  letter-spacing: 0.08em;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact li {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.6;
}
.footer-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  color: var(--text-body);
}
.footer-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); transition: var(--transition); }
.footer-bottom a:hover { color: var(--primary); }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .nav-logo-text { font-size: 1rem; }
  .hero-content { gap: 32px; }
  .feature-card { flex-basis: calc(50% - 14px); }
  .case-card:first-child .case-media { width: 50%; }
  .pricing-grid { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-links, .nav-cta-group .nav-search, .btn-login { display: none; }
  .menu-toggle { display: flex; }
  .hero { padding: 120px 0 60px; }
  .hero-content { flex-direction: column; text-align: center; }
  .hero-text { max-width: 100%; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .section { padding: 72px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .feature-grid { flex-direction: column; }
  .feature-card { flex-basis: 100%; }
  .feature-card:first-child, .feature-card:last-child { min-height: 200px; }
  .scenario-block, .scenario-block.reversed { flex-direction: column; gap: 32px; }
  .scenario-image img { height: 260px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card:first-child { grid-column: span 1; flex-direction: column; }
  .case-card:first-child .case-media { width: 100%; min-height: 200px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card--featured { transform: scale(1); }
  .news-item { flex-direction: column; gap: 12px; }
  .news-thumb { width: 100%; height: 160px; }
  .cta-content { flex-direction: column; text-align: center; }
  .cta-text { text-align: center; }
  .cta-desc { margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 2.25rem; }
  .hero-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 1.5rem; }
  .section-title { font-size: 1.5rem; }
  .pricing-card { padding: 28px 20px; }
  .news-thumb { height: 120px; }
  .footer-bottom { flex-direction: column; }
}

/* roulang page: article */
:root {
    --bg-base: #0A0E14;
    --bg-surface: #111923;
    --bg-elevated: #1A2230;
    --primary: #00F0C0;
    --primary-soft: rgba(0, 240, 192, 0.08);
    --accent: #FF7A00;
    --accent-soft: rgba(255, 122, 0, 0.12);
    --text-title: #F3F6FA;
    --text-body: #C8D0DC;
    --text-muted: #7E8A9A;
    --text-disabled: #4A5568;
    --border: #1E2734;
    --border-light: #232E3C;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-pill: 999px;
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 8px 40px rgba(0, 240, 192, 0.12);
    --glow-primary: 0 0 16px rgba(0, 240, 192, 0.30);
    --glow-accent: 0 0 24px rgba(255, 122, 0, 0.25);
    --transition: 200ms cubic-bezier(0.22, 1, 0.36, 1);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-num: "Inter", "DIN Alternate", "Roboto Mono", monospace;
}

*, *::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-body);
    line-height: 1.75;
    font-size: 0.9375rem;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input { font-family: inherit; border: none; outline: none; }

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

/* ===== 顶部安全线 ===== */
.top-line {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    z-index: 1001;
    background: linear-gradient(90deg, transparent 0%, var(--primary) 20%, var(--primary) 80%, transparent 100%);
}

/* ===== 导航栏 ===== */
.site-header {
    position: fixed;
    top: 1px;
    left: 0;
    right: 0;
    height: 72px;
    z-index: 1000;
    background: rgba(10, 14, 20, 0.86);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 1280px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    transition: transform var(--transition);
}

.nav-logo:hover { transform: scale(1.02); }

.nav-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--bg-elevated);
    border: 1px solid rgba(0, 240, 192, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.nav-logo-icon::before {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0.9;
}

.nav-logo-icon::after {
    content: "";
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary);
}

.nav-logo-text {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-title);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.nav-logo-text em {
    font-style: normal;
    color: var(--accent);
    position: relative;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-body);
    padding: 8px 2px;
    position: relative;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-link:hover { color: var(--text-title); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text-title); }
.nav-link.active::after { width: 100%; }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.btn-login-nav {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0A0E14;
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.btn-login-nav:hover {
    background: #E56D00;
    box-shadow: var(--glow-accent);
    transform: translateY(-1px);
}

.btn-login-nav:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.nav-burger {
    display: none;
    width: 42px;
    height: 42px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: all var(--transition);
}

.nav-burger span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text-body);
    transition: all var(--transition);
}

.nav-burger:hover { border-color: var(--primary); }
.nav-burger:hover span { background: var(--primary); }

.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--primary); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--primary); }

/* ===== 移动端导航抽屉 ===== */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #0D141E;
    z-index: 999;
    padding: 32px 24px;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-nav.show { display: flex; }

.mobile-nav .nav-link {
    font-size: 1.0625rem;
    color: var(--text-body);
    padding: 16px 0;
    border-bottom: 1px solid rgba(30, 39, 52, 0.6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.mobile-nav .btn-login-nav {
    margin-top: 24px;
    justify-content: center;
    width: 100%;
    padding: 14px;
}

/* ===== 页面头部横幅 ===== */
.article-banner {
    position: relative;
    padding: 160px 0 60px;
    background: linear-gradient(180deg, rgba(10, 14, 20, 0.86) 0%, var(--bg-base) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    overflow: hidden;
}

.article-banner::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(0, 240, 192, 0.07), transparent 65%);
    pointer-events: none;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    position: relative;
    z-index: 2;
}

.breadcrumb a { transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-disabled); }
.breadcrumb .current {
    max-width: 240px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-body);
}

.article-head {
    max-width: 920px;
    position: relative;
    z-index: 2;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.article-meta .badge {
    display: inline-flex;
    height: 24px;
    align-items: center;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary);
    background: transparent;
    border: 1px solid rgba(0, 240, 192, 0.5);
    letter-spacing: 0.04em;
}

.article-meta .meta-item {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-family: var(--font-num);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-meta .meta-item svg { width: 14px; height: 14px; opacity: 0.7; }

.article-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-title);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.article-summary {
    max-width: 760px;
    padding-left: 24px;
    border-left: 2px solid var(--primary);
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.8;
    margin-bottom: 8px;
}

/* ===== 正文区域 ===== */
.article-main {
    padding: 48px 0 72px;
}

.article-body {
    max-width: 820px;
    margin: 0 auto;
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--text-body);
}

.article-body > * + * { margin-top: 24px; }

.article-body h2,
.article-body h3 {
    color: var(--text-title);
    font-weight: 650;
    margin-top: 48px;
    line-height: 1.4;
    position: relative;
    padding-left: 18px;
}

.article-body h2::before,
.article-body h3::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.15em;
    width: 4px;
    height: 1.15em;
    background: var(--primary);
    border-radius: 2px;
}

.article-body h2 { font-size: 1.5rem; }
.article-body h3 { font-size: 1.25rem; }

.article-body p { margin: 24px 0; }

.article-body a {
    color: var(--primary);
    border-bottom: 1px solid rgba(0, 240, 192, 0.3);
    transition: all var(--transition);
}

.article-body a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.article-body strong { color: var(--text-title); font-weight: 600; }

.article-body img {
    border-radius: 12px;
    margin: 32px auto;
    box-shadow: var(--shadow-card);
    max-width: 100%;
    height: auto;
}

.article-body blockquote {
    border-left: 3px solid var(--accent);
    background: var(--bg-surface);
    padding: 20px 24px;
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--text-muted);
    font-size: 1rem;
    margin: 32px 0;
}

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

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

.article-body ul li {
    position: relative;
    padding-left: 8px;
    margin-bottom: 10px;
}

.article-body ul li::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 0.7em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 6px rgba(0, 240, 192, 0.4);
}

.article-body ol li {
    list-style: decimal;
    margin-bottom: 10px;
    padding-left: 6px;
}

.article-body code {
    background: var(--bg-elevated);
    color: var(--primary);
    font-family: var(--font-num);
    font-size: 0.875rem;
    padding: 2px 8px;
    border-radius: 6px;
}

.article-body pre {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    overflow-x: auto;
    margin: 32px 0;
}

.article-body pre code {
    background: transparent;
    padding: 0;
    color: var(--text-body);
    line-height: 1.7;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    border-radius: 12px;
    overflow: hidden;
    font-size: 0.9375rem;
}

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

.article-body th {
    background: var(--bg-elevated);
    color: var(--text-title);
    font-weight: 600;
}

.article-body tr:nth-child(even) { background: rgba(26, 34, 48, 0.4); }
.article-body tr:hover { background: rgba(0, 240, 192, 0.04); }

.article-body hr {
    border: none;
    height: 1px;
    background: var(--border);
    margin: 48px 0;
}

/* ===== 上一篇 / 下一篇 ===== */
.article-pagination {
    max-width: 820px;
    margin: 72px auto 0;
    display: flex;
    gap: 16px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.page-btn {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.page-btn small {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-family: var(--font-num);
}

.page-btn span:last-child {
    font-size: 0.9375rem;
    color: var(--text-title);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.page-btn .page-arrow {
    font-family: var(--font-num);
    font-size: 1.25rem;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform var(--transition);
}

.page-btn:hover {
    border-color: rgba(0, 240, 192, 0.4);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

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

/* ===== 相关阅读 ===== */
.related-section {
    padding: 72px 0 48px;
    border-top: 1px solid var(--border);
}

.related-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 40px;
}

.related-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 650;
    color: var(--text-title);
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
}

.related-head h2::before {
    content: "";
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}

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

.related-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}

.related-card:hover {
    border-color: rgba(0, 240, 192, 0.4);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.related-card-cover {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--bg-elevated);
    position: relative;
}

.related-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.related-card-body {
    padding: 20px;
}

.related-card-body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-title);
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card-body .time {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-num);
    display: flex;
    align-items: center;
    gap: 6px;
}

.related-footer {
    max-width: 820px;
    margin: 48px auto 0;
    text-align: left;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-back:hover {
    background: rgba(0, 240, 192, 0.08);
    box-shadow: var(--glow-primary);
    transform: translateY(-1px);
}

.btn-back:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* ===== 内容未找到 ===== */
.empty-article {
    padding: 140px 0 160px;
    text-align: center;
}

.empty-article .empty-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    border: 2px dashed rgba(0, 240, 192, 0.3);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
}

.empty-article h2 {
    font-size: 1.5rem;
    color: var(--text-title);
    margin-bottom: 12px;
}

.empty-article p {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.btn-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0A0E14;
    font-weight: 600;
    padding: 12px 32px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.btn-home:hover {
    background: #E56D00;
    box-shadow: var(--glow-accent);
    transform: translateY(-2px);
}

/* ===== CTA 横幅 ===== */
.article-cta {
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding: 72px 0;
    position: relative;
    overflow: hidden;
}

.article-cta::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    width: 40%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(255, 122, 0, 0.12), transparent 70%);
    pointer-events: none;
}

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

.cta-copy h2 {
    font-size: clamp(1.375rem, 3vw, 2rem);
    color: var(--text-title);
    font-weight: 650;
    line-height: 1.4;
    margin-bottom: 10px;
}

.cta-copy p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    max-width: 480px;
}

.cta-actions {
    display: flex;
    gap: 14px;
    flex-shrink: 0;
}

.btn-cta-solid {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0A0E14;
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.btn-cta-solid:hover {
    background: #E56D00;
    box-shadow: var(--glow-accent);
    transform: translateY(-2px);
}

.btn-cta-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.btn-cta-outline:hover {
    background: rgba(0, 240, 192, 0.08);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.app-footer {
    background: #080B10;
    border-top: 1px solid rgba(0, 240, 192, 0.3);
    padding-top: 64px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border);
}

.footer-brand .nav-logo-text {
    font-size: 1.125rem;
    margin-bottom: 16px;
    display: inline-block;
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 380px;
}

.footer-col h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-title);
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}

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

.footer-col ul li a {
    font-size: 0.875rem;
    color: var(--text-body);
    transition: color var(--transition);
}

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

.footer-col .footer-contact {
    font-size: 0.875rem;
    color: var(--text-body);
}

.footer-status-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 6px rgba(0, 240, 192, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 0;
    flex-wrap: wrap;
    font-size: 0.8125rem;
    color: var(--text-disabled);
}

.footer-bottom a {
    color: var(--text-muted);
    transition: color var(--transition);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .nav-links { gap: 20px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
    .container { padding-left: 20px; padding-right: 20px; }
    .header-inner { padding-left: 20px; padding-right: 20px; }
    
    .nav-links { display: none; }
    .nav-actions .btn-login-nav { display: none; }
    .nav-burger { display: flex; }
    
    .mobile-nav { display: none; }
    .mobile-nav.show { display: flex; }
    
    .article-banner { padding: 140px 0 48px; }
    
    .article-meta { gap: 10px; }
    
    .article-summary { padding-left: 16px; }
    
    .article-main { padding: 32px 0 56px; }
    
    .article-pagination { flex-direction: column; }
    
    .related-grid { grid-template-columns: 1fr; gap: 16px; }
    
    .cta-inner { flex-direction: column; align-items: flex-start; }
    
    .cta-actions { width: 100%; }
    
    .cta-actions .btn-cta-solid,
    .cta-actions .btn-cta-outline {
        flex: 1;
        justify-content: center;
        text-align: center;
    }
    
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .header-inner { padding-left: 16px; padding-right: 16px; gap: 12px; }
    
    .nav-logo-text { font-size: 0.9375rem; }
    
    .article-title { line-height: 1.35; }
    
    .article-meta .meta-item { font-size: 0.75rem; }
    
    .article-body { font-size: 1rem; line-height: 1.85; }
    
    .article-body h2 { font-size: 1.25rem; }
    .article-body h3 { font-size: 1.125rem; }
    
    .article-body blockquote { padding: 16px 20px; }
    
    .page-btn { padding: 16px 18px; }
    
    .related-card-body { padding: 16px; }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-bottom: 32px;
    }
    
    .footer-bottom { gap: 8px; }
    
    .cta-actions { flex-direction: column; }
    
    .cta-actions .btn-cta-solid,
    .cta-actions .btn-cta-outline {
        width: 100%;
        justify-content: center;
    }
}

@media (min-width: 769px) {
    .mobile-nav { display: none !important; }
}

/* roulang page: category1 */
:root {
  --primary: #00F0C0;
  --accent: #FF7A00;
  --bg-base: #0A0E14;
  --bg-surface: #111923;
  --bg-elevated: #1A2230;
  --text-title: #F3F6FA;
  --text-body: #C8D0DC;
  --text-muted: #7E8A9A;
  --text-disabled: #4A5568;
  --border: #1E2734;
  --border-strong: #232E3C;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.35);
  --shadow-hover: 0 8px 40px rgba(0,240,192,0.12);
  --shadow-accent: 0 0 24px rgba(255,122,0,0.25);
  --transition: 200ms cubic-bezier(0.22, 1, 0.36, 1);
  --container-max: 1280px;
  --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif; background: var(--bg-base); color: var(--text-body); line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; gap: 24px; flex-wrap: wrap; }
.section-tag { display: inline-block; font-size: 0.8125rem; font-weight: 600; color: var(--primary); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; }
.section-title { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 650; color: var(--text-title); line-height: 1.25; letter-spacing: 0.02em; }
.section-title::before { content: ""; display: block; width: 24px; height: 2px; background: var(--primary); margin-bottom: 14px; }
.section-link { color: var(--text-muted); font-size: 0.9375rem; transition: color var(--transition); }
.section-link:hover { color: var(--primary); }

/* Header */
.app-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--header-h); background: rgba(10,14,20,0.86); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.header-topbar { height: 3px; background: linear-gradient(90deg, transparent, var(--primary), transparent); }
.header-inner { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; height: calc(var(--header-h) - 3px); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; transition: transform 200ms cubic-bezier(0.22,1,0.36,1); }
.nav-logo:hover { transform: scale(1.02); }
.nav-logo-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, rgba(0,240,192,0.2), rgba(255,122,0,0.1)); border: 1px solid rgba(0,240,192,0.4); display: flex; align-items: center; justify-content: center; color: var(--primary); font-weight: 700; font-size: 18px; }
.nav-logo-text { font-size: 1.25rem; font-weight: 700; color: var(--text-title); letter-spacing: 0.02em; white-space: nowrap; }
.nav-logo-text em { font-style: normal; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-link { position: relative; color: var(--text-body); font-size: 0.9375rem; font-weight: 500; padding: 6px 2px; transition: color var(--transition); white-space: nowrap; }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: width 0.3s cubic-bezier(0.22,1,0.36,1); }
.nav-link:hover { color: var(--text-title); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text-title); }
.nav-link.active::after { width: 100%; }
.nav-cta-group { display: flex; align-items: center; gap: 12px; }
.nav-search-btn { width: 38px; height: 38px; border-radius: var(--radius-md); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: all var(--transition); background: transparent; }
.nav-search-btn:hover { border-color: var(--primary); color: var(--primary); }
.nav-cta { background: var(--accent); color: #0A0E14; font-weight: 600; font-size: 0.9375rem; padding: 12px 28px; border-radius: var(--radius-md); transition: all var(--transition); white-space: nowrap; border: none; }
.nav-cta:hover { background: #E56D00; color: #0A0E14; box-shadow: var(--shadow-accent); transform: translateY(-1px); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--border); background: transparent; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text-title); border-radius: 2px; transition: all 0.3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: #0D141E; z-index: 99; flex-direction: column; padding: 32px 24px; overflow-y: auto; }
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { font-size: 1.125rem; padding: 16px 0; border-bottom: 1px solid var(--border); color: var(--text-body); display: block; }
.mobile-menu .nav-link.active { color: var(--primary); }
.mobile-menu .nav-cta { margin-top: 32px; width: 100%; text-align: center; padding: 16px; font-size: 1.0625rem; }

/* Hero */
.hero { position: relative; padding: calc(var(--header-h) + 80px) 0 80px; overflow: hidden; background: var(--bg-base); }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,14,20,0.7) 0%, rgba(10,14,20,0.85) 60%, var(--bg-base) 100%); }
.hero-grid-overlay { position: absolute; inset: 0; z-index: 1; background-image: linear-gradient(rgba(0,240,192,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(0,240,192,0.06) 1px, transparent 1px); background-size: 48px 48px; pointer-events: none; }
.hero-inner { position: relative; z-index: 2; display: flex; align-items: center; gap: 64px; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.hero-content { flex: 0 0 55%; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; border: 1px solid rgba(0,240,192,0.5); color: var(--primary); font-size: 0.8125rem; font-weight: 600; padding: 6px 14px; border-radius: var(--radius-pill); margin-bottom: 24px; letter-spacing: 0.04em; }
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 8px var(--primary); }
.hero-title { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; color: var(--text-title); line-height: 1.15; margin-bottom: 20px; }
.hero-title span { color: var(--primary); }
.hero-subtitle { font-size: 1.0625rem; color: var(--text-body); max-width: 520px; margin-bottom: 32px; line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; font-weight: 600; font-size: 0.9375rem; border-radius: var(--radius-md); padding: 14px 32px; transition: all var(--transition); border: none; cursor: pointer; line-height: 1.2; }
.btn::focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.btn-primary { background: var(--accent); color: #0A0E14; }
.btn-primary:hover { background: #E56D00; color: #0A0E14; box-shadow: var(--shadow-accent); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: rgba(0,240,192,0.08); color: var(--primary); transform: translateY(-2px); box-shadow: 0 0 16px rgba(0,240,192,0.15); }
.btn-white { background: #fff; color: #0A0E14; }
.btn-white:hover { background: #F3F6FA; color: #0A0E14; box-shadow: 0 4px 20px rgba(255,255,255,0.15); transform: translateY(-2px); }
.hero-visual { flex: 0 0 45%; position: relative; }
.hero-visual .frame { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
.hero-visual .frame img { width: 100%; height: auto; display: block; aspect-ratio: 4/3; object-fit: cover; }
.hero-visual .frame-caption { padding: 16px 20px; font-size: 0.8125rem; color: var(--text-muted); border-top: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.hero-visual .frame-caption .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 6px var(--primary); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero-scroll { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 2; color: var(--text-muted); font-size: 0.8125rem; display: flex; flex-direction: column; align-items: center; gap: 6px; letter-spacing: 0.1em; }
.hero-scroll .arrow { width: 1px; height: 32px; background: linear-gradient(180deg, var(--primary), transparent); display: block; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 32px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-disabled); }
.breadcrumb .current { color: var(--text-body); }

/* Stats */
.stats-bar { background: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stats-item { text-align: center; padding: 8px 0; }
.stats-number { font-family: "Inter", "DIN Alternate", "Roboto Mono", monospace; font-size: 2rem; font-weight: 700; color: var(--text-title); letter-spacing: -0.02em; }
.stats-number em { font-style: normal; color: var(--accent); }
.stats-label { font-size: 0.8125rem; color: var(--text-muted); margin-top: 8px; letter-spacing: 0.04em; }

/* Feature Cards */
.feature-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.feature-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: all var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 1px; background: linear-gradient(90deg, transparent, rgba(0,240,192,0.6), transparent); opacity: 0; transition: opacity var(--transition); }
.feature-card:hover { transform: translateY(-4px); border-color: rgba(0,240,192,0.4); box-shadow: var(--shadow-hover); }
.feature-card:hover::before { opacity: 1; }
.feature-card:nth-child(1) { grid-column: span 3; }
.feature-card:nth-child(2) { grid-column: span 3; }
.feature-card:nth-child(3) { grid-column: span 2; }
.feature-card:nth-child(4) { grid-column: span 4; }
.feature-icon { width: 44px; height: 44px; border-radius: 12px; background: rgba(0,240,192,0.1); border: 1px solid rgba(0,240,192,0.3); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--primary); }
.feature-icon svg { width: 22px; height: 22px; }
.feature-card-title { font-size: 1.25rem; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.feature-card-title::after { content: ""; display: block; width: 24px; height: 2px; background: var(--primary); margin-top: 12px; }
.feature-card-desc { font-size: 0.9375rem; color: var(--text-body); line-height: 1.75; margin-top: 12px; }
.feature-card-link { display: inline-block; margin-top: 16px; color: var(--text-muted); font-size: 0.875rem; font-weight: 500; transition: color var(--transition); }
.feature-card-link:hover { color: var(--accent); }

/* Steps */
.steps-section { background: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.steps-grid::before { content: ""; position: absolute; top: 32px; left: 8%; right: 8%; height: 1px; background: linear-gradient(90deg, transparent, rgba(0,240,192,0.3), transparent); }
.step-item { text-align: center; padding: 0 8px; position: relative; }
.step-number { width: 64px; height: 64px; border-radius: 50%; background: var(--bg-elevated); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 1.375rem; font-weight: 700; color: var(--primary); font-family: "Inter", "DIN Alternate", monospace; margin: 0 auto 20px; position: relative; z-index: 1; box-shadow: 0 0 0 4px var(--bg-surface); }
.step-title { font-size: 1.0625rem; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.step-desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; }

/* Scenario */
.scenario-block { display: flex; align-items: center; gap: 48px; margin-bottom: 64px; }
.scenario-block:last-child { margin-bottom: 0; }
.scenario-block:nth-child(even) { flex-direction: row-reverse; }
.scenario-media { flex: 0 0 50%; border-radius: var(--radius-lg); overflow: hidden; position: relative; box-shadow: var(--shadow-card); }
.scenario-media img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 0.4s ease; }
.scenario-block:hover .scenario-media img { transform: scale(1.02); }
.scenario-tag { font-size: 0.8125rem; font-weight: 600; color: var(--primary); letter-spacing: 0.08em; margin-bottom: 12px; display: block; }
.scenario-text { flex: 0 0 50%; }
.scenario-title { font-size: 1.625rem; font-weight: 650; color: var(--text-title); line-height: 1.3; margin-bottom: 16px; border-left: 2px solid var(--primary); padding-left: 20px; }
.scenario-desc { font-size: 0.9375rem; color: var(--text-body); line-height: 1.8; margin-bottom: 20px; }
.scenario-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 500; font-size: 0.9375rem; transition: color var(--transition); }
.scenario-link:hover { color: var(--accent); }
.scenario-link svg { width: 16px; height: 16px; }

/* Detail Cards */
.detail-list { display: flex; flex-direction: column; gap: 20px; }
.detail-card { display: flex; align-items: center; gap: 24px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px 24px; transition: all var(--transition); }
.detail-card:hover { background: #151D29; border-color: rgba(0,240,192,0.4); box-shadow: var(--shadow-hover); transform: translateX(4px); }
.detail-card:hover .detail-link { color: var(--accent); }
.detail-card-img { flex: 0 0 160px; height: 100px; border-radius: 12px; overflow: hidden; }
.detail-card-img img { width: 100%; height: 100%; object-fit: cover; }
.detail-card-content { flex: 1; }
.detail-card-tag { display: inline-block; font-size: 0.75rem; color: var(--primary); border: 1px solid rgba(0,240,192,0.5); padding: 2px 10px; border-radius: var(--radius-pill); margin-bottom: 8px; letter-spacing: 0.04em; }
.detail-card-title { font-size: 1.125rem; font-weight: 600; color: var(--text-title); margin-bottom: 6px; }
.detail-card-desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.detail-link { font-size: 0.875rem; font-weight: 500; color: var(--primary); white-space: nowrap; margin-left: 16px; display: flex; align-items: center; gap: 4px; transition: color var(--transition); }

/* FAQ */
.faq-section { background: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--bg-base); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: border-color var(--transition); }
.faq-item:hover { border-color: var(--border-strong); }
.faq-item[open] { border-color: rgba(0,240,192,0.3); }
.faq-item summary { list-style: none; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; cursor: pointer; font-size: 1rem; font-weight: 600; color: var(--text-title); user-select: none; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid var(--primary); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 16px; font-weight: 400; transition: all var(--transition); }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); border-color: var(--accent); color: var(--accent); }
.faq-item[open] summary .faq-icon::before { content: "×"; }
.faq-item summary .faq-icon::after { content: "+"; font-size: 18px; line-height: 1; }
.faq-item[open] summary .faq-icon::after { display: none; }
.faq-answer { padding: 0 24px 20px; font-size: 0.9375rem; color: var(--text-muted); line-height: 1.8; border-top: 1px dashed var(--border); margin-top: 0; }
.faq-answer p { padding-top: 16px; }

/* CTA */
.cta-banner { position: relative; overflow: hidden; background: var(--bg-base); padding: 72px 0; }
.cta-banner::before { content: ""; position: absolute; right: -10%; top: 50%; transform: translateY(-50%); width: 400px; height: 400px; background: radial-gradient(circle, rgba(255,122,0,0.15) 0%, transparent 70%); pointer-events: none; }
.cta-inner { position: relative; z-index: 1; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--text-title); line-height: 1.3; max-width: 360px; }
.cta-desc { font-size: 0.9375rem; color: var(--text-muted); margin-top: 12px; max-width: 420px; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Footer */
.app-footer { background: #080B10; border-top: 1px solid var(--primary); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .nav-logo-text { font-size: 1.375rem; }
.footer-brand p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.8; margin-top: 16px; max-width: 320px; }
.footer-col h4 { font-size: 0.9375rem; font-weight: 600; color: var(--text-title); margin-bottom: 20px; letter-spacing: 0.06em; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ""; position: absolute; bottom: 0; left: 0; width: 20px; height: 1px; background: var(--primary); }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { color: var(--text-muted); font-size: 0.875rem; transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-contact { color: var(--text-muted); font-size: 0.875rem; }
.footer-contact li { display: flex; align-items: center; gap: 8px; }
.footer-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 8px rgba(0,240,192,0.5); display: inline-block; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid var(--border); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.8125rem; color: var(--text-disabled); }
.footer-bottom a { color: var(--text-disabled); transition: color var(--transition); }
.footer-bottom a:hover { color: var(--primary); }

/* Responsive */
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .nav-links { gap: 20px; }
  .nav-link { font-size: 0.875rem; }
  .hero-inner { gap: 40px; }
  .hero-content { flex: 0 0 60%; }
  .hero-visual { flex: 0 0 40%; }
  .steps-grid { gap: 24px; }
  .detail-card { flex-wrap: wrap; }
  .detail-card-img { flex: 0 0 100%; height: auto; aspect-ratio: 16/9; }
  .detail-link { margin-left: 0; margin-top: 12px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .container { padding: 0 20px; }
  .nav-links, .nav-cta-group { display: none; }
  .nav-toggle { display: flex; }
  .hero { padding: calc(var(--header-h) + 56px) 0 56px; }
  .hero-inner { flex-direction: column; text-align: center; gap: 32px; }
  .hero-content { flex: 0 0 100%; }
  .hero-visual { display: none; }
  .hero-actions { justify-content: center; }
  .hero-actions .btn { width: 100%; max-width: 280px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stats-number { font-size: 1.75rem; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .feature-card:nth-child(1), .feature-card:nth-child(2), .feature-card:nth-child(3), .feature-card:nth-child(4) { grid-column: span 1; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  .steps-grid::before { display: none; }
  .scenario-block, .scenario-block:nth-child(even) { flex-direction: column; gap: 24px; }
  .scenario-media, .scenario-text { flex: 0 0 100%; }
  .detail-card { padding: 16px; }
  .detail-card-img { width: 100%; aspect-ratio: 16/9; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: span 2; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-actions { justify-content: center; width: 100%; }
  .cta-actions .btn { flex: 1; min-width: 150px; }
  .breadcrumb { justify-content: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stats-number { font-size: 1.5rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 20px; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-item { display: flex; align-items: center; gap: 16px; text-align: left; padding: 0; }
  .step-number { margin: 0; flex-shrink: 0; }
  .scenario-title { font-size: 1.375rem; padding-left: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: span 1; }
  .cta-inner { padding: 0 16px; }
  .cta-actions .btn { width: 100%; }
  .faq-item summary { font-size: 0.9375rem; padding: 16px 18px; }
  .faq-answer { padding: 0 18px 16px; font-size: 0.875rem; }
  .btn { padding: 14px 24px; }
}

/* roulang page: category2 */
:root {
  --primary: #00F0C0;
  --accent: #FF7A00;
  --bg-base: #0A0E14;
  --bg-surface: #111923;
  --bg-elevated: #1A2230;
  --text-title: #F3F6FA;
  --text-body: #C8D0DC;
  --text-muted: #7E8A9A;
  --text-disabled: #4A5568;
  --border-color: #1E2734;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 40px rgba(0, 240, 192, 0.12);
  --glow-primary: 0 0 16px rgba(0, 240, 192, 0.30);
  --glow-accent: 0 0 24px rgba(255, 122, 0, 0.25);
  --transition: 200ms cubic-bezier(0.22, 1, 0.36, 1);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "DIN Alternate", "Roboto Mono", monospace;
  --container-w: 1280px;
  --header-h: 72px;
}
*, *::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-body);
  line-height: 1.75;
  font-size: 1rem;
  -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; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.top-glow { height: 2px; background: linear-gradient(90deg, transparent, var(--primary), transparent); position: fixed; top: 0; left: 0; right: 0; z-index: 200; }

/* Header */
.app-header {
  position: fixed; top: 2px; left: 0; right: 0; height: var(--header-h);
  background: rgba(10, 14, 20, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; transition: transform var(--transition); }
.nav-logo:hover { transform: scale(1.02); }
.nav-logo-mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, rgba(0,240,192,0.2), rgba(255,122,0,0.15));
  border: 1px solid rgba(0,240,192,0.4);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-num); font-weight: 700; font-size: 18px; color: var(--primary);
}
.nav-logo-text { font-size: 1.0625rem; font-weight: 700; color: var(--text-title); letter-spacing: 0.02em; white-space: nowrap; }
.nav-logo-text em { font-style: normal; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-link {
  position: relative; font-size: 0.9375rem; font-weight: 500; color: var(--text-body);
  padding: 6px 2px; transition: color var(--transition);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: var(--primary); border-radius: 2px; transition: width 0.3s cubic-bezier(0.22,1,0.36,1);
}
.nav-link:hover { color: var(--text-title); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text-title); }
.nav-link.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-burger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-burger span { width: 22px; height: 2px; background: var(--text-body); border-radius: 2px; transition: all var(--transition); }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--primary); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--primary); }

/* Mobile drawer */
.mobile-drawer {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: #0D141E;
  z-index: 90; display: flex; flex-direction: column; padding: 100px 24px 40px;
  transform: translateX(100%); transition: transform 0.3s cubic-bezier(0.22,1,0.36,1);
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer a {
  font-size: 1.125rem; color: var(--text-body); padding: 14px 0;
  border-bottom: 1px solid rgba(30,39,52,0.6); font-weight: 500;
}
.mobile-drawer a.active { color: var(--primary); }
.mobile-drawer .drawer-cta {
  margin-top: auto; background: var(--accent); color: #0A0E14;
  text-align: center; padding: 14px 0; border-radius: var(--radius-md);
  font-weight: 600; font-size: 1rem; box-shadow: var(--glow-accent); border: none;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 0.9375rem; font-weight: 600; border-radius: var(--radius-md);
  padding: 14px 32px; transition: all var(--transition); border: none;
  text-align: center; line-height: 1;
}
.btn:focus-visible, .nav-link:focus-visible, .nav-burger:focus-visible {
  outline: 2px solid #fff; outline-offset: 2px;
}
.btn-accent { background: var(--accent); color: #0A0E14; }
.btn-accent:hover { background: #E56D00; box-shadow: var(--glow-accent); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: rgba(0,240,192,0.08); }
.btn-white { background: #fff; color: var(--accent); }
.btn-white:hover { background: #f0f0f0; box-shadow: 0 4px 20px rgba(255,255,255,0.15); }
.btn-sm { padding: 12px 24px; font-size: 0.875rem; }

/* Breadcrumb */
.breadcrumb {
  padding-top: calc(var(--header-h) + 24px);
  font-size: 0.8125rem; color: var(--text-muted);
}
.breadcrumb-container { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb-container .sep { color: var(--text-disabled); }
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text-body); }

/* Hero */
.category-hero {
  position: relative; padding: 72px 0 80px; overflow: hidden;
  background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
}
.category-hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10,14,20,0.92) 20%, rgba(10,14,20,0.65) 60%, rgba(10,14,20,0.4) 100%);
}
.category-hero::after {
  content: ""; position: absolute; top: -120px; right: -80px; width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(0,240,192,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px;
  border: 1px solid rgba(0,240,192,0.5); border-radius: var(--radius-pill);
  font-size: 0.8125rem; color: var(--primary); font-weight: 500; background: rgba(0,240,192,0.06);
  margin-bottom: 20px;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 8px var(--primary); }
.hero-title {
  font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; line-height: 1.2;
  color: var(--text-title); letter-spacing: -0.01em; margin-bottom: 20px;
}
.hero-title .highlight { color: var(--primary); }
.hero-subtitle {
  font-size: 1.0625rem; color: var(--text-muted); max-width: 500px;
  margin-bottom: 36px; line-height: 1.8;
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual {
  position: relative; display: flex; align-items: center; justify-content: center;
  min-height: 320px;
}
.hero-shield {
  width: 260px; height: 300px; border-radius: 24px;
  background: rgba(17,25,35,0.8); border: 1px solid rgba(0,240,192,0.3);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  position: relative; box-shadow: var(--shadow-card);
}
.hero-shield::before {
  content: ""; position: absolute; inset: -1px; border-radius: 24px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(0,240,192,0.4), transparent 40%, rgba(255,122,0,0.2)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.hero-shield-icon { width: 72px; height: 72px; margin-bottom: 20px; color: var(--primary); }
.hero-shield-title { font-size: 1.25rem; color: var(--text-title); font-weight: 600; margin-bottom: 8px; }
.hero-shield-desc { font-size: 0.875rem; color: var(--text-muted); }
.hero-float-card {
  position: absolute; background: var(--bg-elevated); border: 1px solid var(--border-color);
  border-radius: 12px; padding: 12px 16px; display: flex; align-items: center; gap: 10px;
  box-shadow: var(--shadow-card); animation: float 6s ease-in-out infinite;
}
.hero-float-card.fc-1 { top: 40px; right: 10px; }
.hero-float-card.fc-2 { bottom: 50px; left: 10px; animation-delay: 2s; }
.hero-float-card .fc-icon { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; }
.hero-float-card.fc-1 .fc-icon { background: rgba(0,240,192,0.15); color: var(--primary); }
.hero-float-card.fc-2 .fc-icon { background: rgba(255,122,0,0.15); color: var(--accent); }
.hero-float-card .fc-text { font-size: 0.8125rem; color: var(--text-body); line-height: 1.4; }
.hero-float-card .fc-text strong { display: block; color: var(--text-title); font-size: 0.9375rem; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* Section base */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-surface); }
.section-header { margin-bottom: 48px; }
.section-tag {
  display: inline-block; font-size: 0.8125rem; color: var(--primary);
  font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 650; line-height: 1.25;
  color: var(--text-title); position: relative; padding-left: 32px;
}
.section-title::before {
  content: ""; position: absolute; left: 0; top: 12px; width: 24px; height: 2px;
  background: var(--primary); border-radius: 2px;
}
.section-desc { font-size: 1rem; color: var(--text-muted); max-width: 560px; margin-top: 14px; }

/* Stats strip */
.stats-strip {
  background: var(--bg-surface); border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color); padding: 40px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.stat-item { text-align: center; position: relative; }
.stat-item:not(:last-child)::after {
  content: ""; position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
  width: 1px; height: 48px; background: var(--border-color);
}
.stat-num {
  font-family: var(--font-num); font-size: 2rem; font-weight: 700; color: var(--text-title);
  display: block; line-height: 1.2;
}
.stat-num .unit { font-size: 1rem; color: var(--accent); margin-left: 4px; }
.stat-label { font-size: 0.8125rem; color: var(--text-muted); margin-top: 8px; }

/* Feature grid */
.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-surface); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 32px; position: relative;
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: rgba(0,240,192,0.4); transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-card.fc-lg { grid-column: span 5; }
.feature-card.fc-wide { grid-column: span 7; }
.feature-card.fc-wide2 { grid-column: span 7; }
.feature-card.fc-slim { grid-column: span 5; }
.feature-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: rgba(0,240,192,0.1); border: 1px solid rgba(0,240,192,0.3);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 1.25rem; font-weight: 600; color: var(--text-title); margin-bottom: 14px;
}
.feature-card h3::after {
  content: ""; display: block; width: 24px; height: 2px;
  background: var(--primary); margin-top: 10px; border-radius: 2px;
}
.feature-card p { font-size: 0.9375rem; color: var(--text-muted); line-height: 1.7; }
.feature-card .feature-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px; font-size: 0.875rem; color: var(--text-body); font-weight: 500;
  transition: color var(--transition);
}
.feature-card .feature-link:hover { color: var(--accent); }
.feature-card .feature-link svg { width: 14px; height: 14px; }

/* Process timeline */
.process-section { position: relative; }
.process-section::before {
  content: ""; position: absolute; left: 50%; top: 40px; bottom: 40px;
  width: 1px; background: linear-gradient(to bottom, rgba(0,240,192,0.4), rgba(0,240,192,0.05));
  transform: translateX(-50%);
}
.process-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px 80px; position: relative; }
.process-item { position: relative; }
.process-item:nth-child(odd) { padding-right: 32px; text-align: right; }
.process-item:nth-child(even) { padding-left: 32px; }
.process-num {
  font-family: var(--font-num); font-size: 0.875rem; font-weight: 700;
  color: var(--primary); letter-spacing: 0.05em; display: block; margin-bottom: 8px;
}
.process-dot {
  position: absolute; top: 8px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg-base); border: 2px solid var(--primary); box-shadow: 0 0 10px rgba(0,240,192,0.4);
}
.process-item:nth-child(odd) .process-dot { right: -6px; }
.process-item:nth-child(even) .process-dot { left: -6px; }
.process-title { font-size: 1.125rem; font-weight: 600; color: var(--text-title); margin-bottom: 8px; }
.process-desc { font-size: 0.9375rem; color: var(--text-muted); line-height: 1.7; }

/* Scenario blocks */
.scenario-block { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-bottom: 80px; }
.scenario-block:last-child { margin-bottom: 0; }
.scenario-block.reverse .scenario-media { order: 2; }
.scenario-block.reverse .scenario-content { order: 1; }
.scenario-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; }
.scenario-media img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover;
  border-radius: var(--radius-lg); border: 1px solid var(--border-color);
}
.scenario-media::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius-lg);
  border: 1px solid rgba(0,240,192,0.15); pointer-events: none;
}
.scenario-tag {
  display: inline-block; font-size: 0.8125rem; color: var(--primary);
  font-weight: 600; letter-spacing: 0.08em; margin-bottom: 12px;
}
.scenario-content { padding-left: 32px; border-left: 2px solid var(--primary); }
.scenario-block.reverse .scenario-content { padding-left: 0; padding-right: 32px; border-left: none; border-right: 2px solid var(--primary); }
.scenario-content h3 { font-size: 1.5rem; color: var(--text-title); font-weight: 650; margin-bottom: 16px; line-height: 1.3; }
.scenario-content p { font-size: 1rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 24px; }
.scenario-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.9375rem; font-weight: 600; color: var(--primary);
  transition: color var(--transition);
}
.scenario-link:hover { color: var(--accent); }
.scenario-link svg { width: 16px; height: 16px; }

/* Tabs section */
.tabs-panel { background: var(--bg-surface); border-radius: var(--radius-lg); padding: 40px; border: 1px solid var(--border-color); }
.tabs-nav { display: flex; gap: 8px; border-bottom: 2px solid var(--border-color); margin-bottom: 32px; flex-wrap: wrap; }
.tab-btn {
  padding: 10px 20px; font-size: 0.9375rem; font-weight: 500; color: var(--text-muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all var(--transition);
  background: none;
}
.tab-btn:hover { color: var(--text-title); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.tab-content { display: none; }
.tab-content.active { display: block; animation: tabFade 0.3s ease; }
@keyframes tabFade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.tab-content h4 { font-size: 1.25rem; color: var(--text-title); margin-bottom: 16px; }
.tab-content p { font-size: 0.9375rem; color: var(--text-muted); line-height: 1.8; max-width: 720px; }
.tab-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 24px; }
.tab-feature-item {
  display: flex; align-items: flex-start; gap: 12px; padding: 16px;
  background: rgba(10,14,20,0.5); border: 1px solid var(--border-color); border-radius: 12px;
}
.tab-feature-item .tf-icon { width: 24px; height: 24px; border-radius: 6px; background: rgba(0,240,192,0.12); display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.tab-feature-item .tf-text { font-size: 0.875rem; color: var(--text-body); line-height: 1.6; }
.tab-feature-item .tf-text strong { color: var(--text-title); display: block; font-size: 0.9375rem; margin-bottom: 4px; }

/* FAQ */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--bg-surface); border: 1px solid var(--border-color);
  border-radius: 12px; margin-bottom: 16px; overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: rgba(0,240,192,0.3); }
.faq-item.open { border-color: rgba(0,240,192,0.4); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; font-size: 1rem; font-weight: 600; color: var(--text-title);
  cursor: pointer; transition: background var(--transition);
}
.faq-q:hover { background: rgba(0,240,192,0.03); }
.faq-icon {
  width: 24px; height: 24px; border-radius: 50%; border: 1.5px solid var(--primary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: transform 0.3s ease, border-color var(--transition), background var(--transition);
  color: var(--primary); font-size: 1rem; line-height: 1;
}
.faq-item.open .faq-icon { transform: rotate(45deg); border-color: var(--accent); color: var(--accent); background: rgba(255,122,0,0.1); }
.faq-a { display: none; padding: 0 24px 20px; font-size: 0.875rem; color: var(--text-muted); line-height: 1.8; }
.faq-item.open .faq-a { display: block; }

/* CTA banner */
.cta-banner {
  position: relative; padding: 64px; border-radius: var(--radius-lg);
  background: #0D141E; border: 1px solid var(--border-color); overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute; top: 0; right: 0; width: 30%; height: 100%;
  background: radial-gradient(circle at center, rgba(255,122,0,0.15), transparent 70%);
}
.cta-banner .cta-content { position: relative; z-index: 2; max-width: 560px; }
.cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2rem); color: var(--text-title); line-height: 1.3; margin-bottom: 16px; }
.cta-banner p { font-size: 1rem; color: var(--text-muted); margin-bottom: 32px; line-height: 1.7; }
.cta-banner .btn { min-width: 180px; }

/* Footer */
.app-footer {
  background: #080B10; border-top: 1px solid var(--border-color);
  margin-top: 0; padding: 64px 0 0;
  position: relative;
}
.app-footer::before {
  content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; margin-top: 16px; max-width: 300px; }
.footer-col h4 {
  font-size: 0.9375rem; color: var(--text-title); font-weight: 600; margin-bottom: 20px;
  letter-spacing: 0.04em; position: relative; padding-bottom: 10px;
}
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 24px; height: 2px; background: var(--primary); border-radius: 2px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 0.875rem; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul a:hover { color: var(--primary); }
.footer-contact li { font-size: 0.875rem; color: var(--text-muted); }
.footer-status-bar { display: flex; align-items: center; gap: 8px; }
.footer-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 8px rgba(0,240,192,0.6); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
.footer-bottom {
  border-top: 1px solid rgba(30,39,52,0.6); padding: 24px 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  font-size: 0.8125rem; color: var(--text-disabled);
}
.footer-bottom a { color: var(--text-muted); transition: color var(--transition); }
.footer-bottom a:hover { color: var(--primary); }

/* Back to top */
.back-top {
  position: fixed; bottom: 40px; right: 40px; width: 48px; height: 48px;
  border-radius: 50%; background: var(--bg-elevated); border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center; color: var(--text-muted);
  z-index: 80; transition: all var(--transition); opacity: 0; pointer-events: none;
}
.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { color: var(--primary); border-color: rgba(0,240,192,0.4); box-shadow: var(--glow-primary); }

/* Responsive */
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .nav-link { font-size: 0.875rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .hero-ctas { justify-content: center; }
  .hero-subtitle { margin-left: auto; margin-right: auto; text-align: center; }
  .hero-title { text-align: center; }
  .hero-badge { margin-left: auto; margin-right: auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-item:nth-child(2)::after { display: none; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card.fc-lg, .feature-card.fc-wide, .feature-card.fc-wide2, .feature-card.fc-slim { grid-column: auto; }
  .process-grid { grid-template-columns: 1fr; gap: 32px; }
  .process-section::before { display: none; }
  .process-item:nth-child(odd), .process-item:nth-child(even) { padding: 0 0 0 24px; text-align: left; }
  .process-item:nth-child(odd) .process-dot, .process-item:nth-child(even) .process-dot { left: 0; right: auto; }
  .scenario-block { grid-template-columns: 1fr; gap: 32px; margin-bottom: 56px; }
  .scenario-block.reverse .scenario-media { order: 1; }
  .scenario-block.reverse .scenario-content { order: 2; }
  .scenario-content, .scenario-block.reverse .scenario-content { padding-left: 0; padding-right: 0; border-left: none; border-right: none; }
  .scenario-content { border-left: 2px solid var(--primary); padding-left: 24px; }
  .scenario-block.reverse .scenario-content { border-left: 2px solid var(--primary); padding-left: 24px; border-right: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .nav-links { display: none; }
  .nav-actions .btn { display: none; }
  .nav-burger { display: flex; }
  .section { padding: 56px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .tab-features { grid-template-columns: 1fr; }
  .tabs-panel { padding: 24px; }
  .cta-banner { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .back-top { right: 20px; bottom: 20px; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .hero-title { font-size: 1.875rem; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; }
  .scenario-content, .scenario-block.reverse .scenario-content { padding-left: 16px; }
  .cta-banner .btn { width: 100%; }
  .tab-btn { padding: 8px 14px; font-size: 0.8125rem; }
}

/* roulang page: category3 */
:root {
  --primary: #00F0C0;
  --accent: #FF7A00;
  --bg-base: #0A0E14;
  --bg-surface: #111923;
  --bg-elevated: #1A2230;
  --bg-deep: #080B10;
  --bg-hover: #151D29;
  --text-title: #F3F6FA;
  --text-body: #C8D0DC;
  --text-sub: #7E8A9A;
  --text-disabled: #4A5568;
  --border: #1E2734;
  --border-light: #232E3C;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-full: 999px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 40px rgba(0, 240, 192, 0.12);
  --transition: 200ms cubic-bezier(0.22, 1, 0.36, 1);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "DIN Alternate", "Roboto Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  background-color: var(--bg-base);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.no-scroll {
  overflow: hidden;
}

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

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

a:hover {
  color: var(--text-title);
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  width: 100%;
}

.top-line {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  z-index: 1001;
  pointer-events: none;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(10, 14, 20, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.nav-logo:hover {
  transform: scale(1.02);
}

.nav-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid rgba(0, 240, 192, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.nav-logo-icon::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: block;
  box-shadow: 0 0 10px rgba(0, 240, 192, 0.3);
}

.nav-logo-icon::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 2px;
  background: var(--primary);
  bottom: 8px;
  left: 8px;
  box-shadow: 0 0 6px rgba(0, 240, 192, 0.5);
}

.nav-logo-text {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav-logo-text em {
  font-style: normal;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 2px;
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.nav-link:hover::after {
  width: 100%;
}

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

.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  font-family: var(--font-cn);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 12px 28px;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.btn-accent {
  background: var(--accent);
  color: #0A0E14;
  box-shadow: 0 0 16px rgba(255, 122, 0, 0.25);
}

.btn-accent:hover {
  background: #E56D00;
  color: #0A0E14;
  box-shadow: 0 0 24px rgba(255, 122, 0, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(0, 240, 192, 0.08);
  color: var(--primary);
  box-shadow: 0 0 16px rgba(0, 240, 192, 0.2);
}

.btn-nav {
  padding: 10px 22px;
  font-size: 0.875rem;
  box-shadow: 0 0 12px rgba(255, 122, 0, 0.2);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition);
}

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

.nav-toggle-icon {
  width: 18px;
  height: 14px;
  position: relative;
  display: block;
}

.nav-toggle-icon span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-body);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle-icon span:nth-child(1) {
  top: 0;
}

.nav-toggle-icon span:nth-child(2) {
  top: 6px;
}

.nav-toggle-icon span:nth-child(3) {
  top: 12px;
}

.nav-toggle.open .nav-toggle-icon span:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

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

.nav-toggle.open .nav-toggle-icon span:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 72px 0 0 0;
  background: #0D141E;
  z-index: 999;
  padding: 32px 24px 24px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

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

.mobile-menu .nav-link {
  font-size: 1.125rem;
  padding: 16px 12px;
  border-radius: var(--radius-md);
  color: var(--text-body);
  display: block;
  border-bottom: 1px solid rgba(30, 39, 52, 0.5);
}

.mobile-menu .nav-link.active {
  color: var(--primary);
  background: rgba(0, 240, 192, 0.06);
}

.mobile-menu .btn {
  margin-top: 24px;
  width: 100%;
}

.breadcrumb {
  padding: 24px 0 0;
  font-size: 0.8125rem;
  color: var(--text-sub);
}

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

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

.breadcrumb .sep {
  margin: 0 10px;
  color: var(--text-disabled);
}

.breadcrumb .current {
  color: var(--text-body);
  max-width: 30em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: inline-block;
  vertical-align: bottom;
}

.page-hero {
  position: relative;
  padding: 72px 0 80px;
  background: linear-gradient(rgba(10, 14, 20, 0.86), rgba(10, 14, 20, 0.92)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 20% 30%, rgba(0, 240, 192, 0.10), transparent 60%);
  pointer-events: none;
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 240, 192, 0.08);
  border: 1px solid rgba(0, 240, 192, 0.4);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 0.8125rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 240, 192, 0.8);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.page-hero h1 em {
  font-style: normal;
  color: var(--primary);
}

.hero-sub {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 540px;
  margin-bottom: 32px;
}

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

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 240, 192, 0.25);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  aspect-ratio: 4 / 3;
}

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

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(0, 240, 192, 0.15));
  pointer-events: none;
}

.stats-section {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}

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

.stat-item {
  text-align: center;
  padding: 12px 0;
}

.stat-number {
  font-family: var(--font-num);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.2;
}

.stat-number em {
  font-style: normal;
  color: var(--accent);
}

.stat-label {
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--text-sub);
  letter-spacing: 0.04em;
}

.section {
  padding: 96px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 650;
  color: var(--text-title);
  line-height: 1.25;
  position: relative;
  padding-top: 16px;
}

.section-head h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 240, 192, 0.4);
}

.section-head .section-intro {
  color: var(--text-sub);
  font-size: 0.9375rem;
  max-width: 460px;
  text-align: right;
  line-height: 1.8;
}

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.scenario-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.scenario-item:nth-child(even) .scenario-image {
  order: 2;
}

.scenario-item:nth-child(even) .scenario-content {
  order: 1;
}

.scenario-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  position: relative;
}

.scenario-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.scenario-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.scenario-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 16px;
  line-height: 1.4;
  position: relative;
  padding-left: 20px;
}

.scenario-content h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--primary);
  box-shadow: 0 0 6px rgba(0, 240, 192, 0.5);
}

.scenario-content p {
  color: var(--text-body);
  line-height: 1.9;
  margin-bottom: 24px;
  font-size: 0.9375rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: color var(--transition);
}

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

.text-link .arrow {
  transition: transform var(--transition);
}

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

.process-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.process-item {
  position: relative;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.process-item:hover {
  border-color: rgba(0, 240, 192, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.process-num {
  font-family: var(--font-num);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(255, 122, 0, 0.1);
  border-radius: var(--radius-full);
  padding: 4px 14px;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}

.process-item h4 {
  font-size: 1.0625rem;
  color: var(--text-title);
  font-weight: 600;
  margin-bottom: 10px;
}

.process-item p {
  font-size: 0.8125rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.service-list-section {
  padding: 96px 0;
}

.service-items {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
}

.service-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 28px 16px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  position: relative;
}

.service-item:hover {
  background: var(--bg-hover);
}

.service-item::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 0;
  width: 3px;
  height: 0;
  background: var(--accent);
  transition: height var(--transition);
}

.service-item:hover::before {
  height: 100%;
}

.service-item-cat {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.04em;
  font-family: var(--font-num);
  white-space: nowrap;
}

.service-item-content h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 6px;
}

.service-item-content p {
  font-size: 0.875rem;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 640px;
}

.service-item-link {
  font-size: 0.875rem;
  color: var(--text-body);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

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

.service-item-link .arrow {
  font-size: 1.125rem;
  line-height: 1;
}

.faq-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 96px 0;
}

.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.open {
  border-color: rgba(0, 240, 192, 0.4);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-title);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: color var(--transition);
  font-family: var(--font-cn);
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border: 1.5px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
  color: var(--primary);
  transition: all var(--transition);
  font-weight: 400;
}

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

.faq-answer {
  display: none;
  padding: 0;
  color: var(--text-sub);
  font-size: 0.875rem;
  line-height: 1.9;
  border-top: 0px solid var(--border);
  transition: all var(--transition);
}

.faq-answer-inner {
  padding: 4px 24px 22px;
}

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

.cta-banner {
  position: relative;
  padding: 64px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  overflow: hidden;
  margin: 0 0 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.cta-banner::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 30%;
  height: 100%;
  background: radial-gradient(ellipse at right, rgba(255, 122, 0, 0.12), transparent 70%);
  pointer-events: none;
}

.cta-banner-content {
  position: relative;
  z-index: 1;
}

.cta-banner-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--text-title);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

.cta-banner-content p {
  color: var(--text-sub);
  font-size: 0.9375rem;
  max-width: 460px;
}

.cta-banner .btn {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  font-size: 1rem;
  padding: 16px 40px;
}

.app-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(0, 240, 192, 0.3);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .nav-logo-text {
  font-size: 1.25rem;
  display: block;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-title);
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--primary);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li {
  font-size: 0.875rem;
  color: var(--text-sub);
  line-height: 1.6;
}

.footer-col ul li a {
  color: var(--text-sub);
  font-size: 0.875rem;
}

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

.footer-status-bar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 240, 192, 0.06);
  border: 1px solid rgba(0, 240, 192, 0.2);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 0.8125rem;
  color: var(--text-body);
}

.footer-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 240, 192, 0.8);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.85);
  }
}

.footer-bottom {
  border-top: 1px solid rgba(30, 39, 52, 0.6);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--text-disabled);
}

.footer-bottom a {
  color: var(--text-sub);
}

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

@media (min-width: 1024px) and (max-width: 1200px) {
  .nav-links {
    gap: 20px;
  }
  .nav-link {
    font-size: 0.875rem;
  }
  .nav-logo-text {
    font-size: 1.125rem;
  }
}

@media (max-width: 1023px) {
  .nav-links {
    display: none;
  }
  .nav-actions .btn-nav {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .page-hero .container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-visual {
    max-width: 560px;
  }
  .page-hero {
    padding: 56px 0 64px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .scenario-item,
  .scenario-item:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .scenario-item:nth-child(even) .scenario-image {
    order: 0;
  }
  .scenario-item:nth-child(even) .scenario-content {
    order: 0;
  }
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .service-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .service-item-cat {
    margin-bottom: 4px;
  }
  .service-item-link {
    margin-top: 8px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding: 48px 32px;
  }
}

@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .app-header {
    height: 64px;
  }
  .header-inner {
    height: 64px;
  }
  .nav-logo-text {
    font-size: 1rem;
    white-space: nowrap;
  }
  .nav-logo-icon {
    width: 32px;
    height: 32px;
  }
  .mobile-menu {
    inset: 64px 0 0 0;
  }
  .page-hero {
    padding: 40px 0 48px;
  }
  .page-hero h1 {
    font-size: 2rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .section {
    padding: 56px 0;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 32px;
  }
  .section-head .section-intro {
    text-align: left;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-number {
    font-size: 1.5rem;
  }
  .scenario-list {
    gap: 48px;
  }
  .scenario-image img {
    aspect-ratio: 4 / 3;
  }
  .process-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .process-item {
    padding: 24px 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-brand p {
    max-width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .cta-banner {
    padding: 32px 20px;
    margin-bottom: 56px;
  }
  .cta-banner .btn {
    width: 100%;
  }
  .faq-question {
    padding: 18px 16px;
    font-size: 0.9375rem;
    gap: 16px;
  }
  .service-item {
    padding: 24px 8px;
  }
}

@media (max-width: 520px) {
  .nav-links {
    display: none;
  }
  .nav-logo-text {
    font-size: 0.9375rem;
  }
  .nav-logo-text em {
    margin-right: 0;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .hero-visual {
    display: none;
  }
  .page-hero h1 {
    font-size: 1.75rem;
  }
  .page-hero .hero-sub {
    font-size: 0.9375rem;
  }
  .btn-nav {
    display: none;
  }
}