/* ============================================================
   暗网守护者企业级威胁狩猎平台 - 主样式表
   配色方案：深空蓝黑 + 科技蓝 + 安全绿 + 告警红
   ============================================================ */

/* ---- CSS变量 ---- */
:root {
  --color-primary:     #007BFF;
  --color-secondary:   #28A745;
  --color-danger:      #DC3545;
  --color-bg:          #0D1A26;
  --color-card:        #1A2B3C;
  --color-card-hover:  #1E3347;
  --color-border:      rgba(0,123,255,0.25);
  --color-border-glow: rgba(0,123,255,0.6);
  --color-text:        #E0E6EB;
  --color-text-muted:  #8FA3B4;
  --color-text-dim:    #5C7A8C;
  --color-heading:     #FFFFFF;
  --font-primary:      'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono:         'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --radius-sm:         4px;
  --radius-md:         8px;
  --radius-lg:         16px;
  --shadow-glow:       0 0 20px rgba(0,123,255,0.3);
  --shadow-card:       0 4px 24px rgba(0,0,0,0.5);
  --transition:        all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height:        68px;
}

/* ---- 重置与基础 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

/* 滚动条美化 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #0056b3; }

/* ---- 排版 ---- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; color: var(--color-text); }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: #40a0ff; }

ul, ol { padding-left: 1.5rem; }
li { margin-bottom: 0.4rem; }

code, pre {
  font-family: var(--font-mono);
  background: rgba(0,123,255,0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
code { padding: 0.1em 0.4em; font-size: 0.88em; color: #7ec8ff; }
pre { padding: 1rem; overflow-x: auto; }

/* ---- 布局容器 ---- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--wide { max-width: 1440px; }
.container--narrow { max-width: 900px; }

.section { padding: 80px 0; }
.section--sm { padding: 48px 0; }
.section--lg { padding: 120px 0; }

/* ---- 导航栏 ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(13,26,38,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-heading);
  text-decoration: none;
}

.navbar__logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--color-primary), #0056b3);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-glow);
}

.navbar__logo-text { color: var(--color-heading); }
.navbar__logo-text span { color: var(--color-primary); }

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0; margin: 0;
}

.navbar__nav a {
  display: block;
  padding: 0.45rem 0.85rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.navbar__nav a:hover,
.navbar__nav a.active {
  color: var(--color-heading);
  background: rgba(0,123,255,0.12);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar__search-btn {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
  display: flex; align-items: center; gap: 0.4rem;
}

.navbar__search-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 0.45rem 1.1rem !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.88rem !important;
  box-shadow: 0 0 12px rgba(0,123,255,0.4);
}

.btn--nav-cta:hover {
  background: #0056b3 !important;
  box-shadow: 0 0 20px rgba(0,123,255,0.6);
}

/* 移动端汉堡菜单 */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.navbar__hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb__sep { color: var(--color-text-dim); }
.breadcrumb__current { color: var(--color-text); }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 16px rgba(0,123,255,0.4);
}
.btn--primary:hover {
  background: #0056b3;
  color: #fff;
  box-shadow: 0 0 28px rgba(0,123,255,0.7);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn--secondary:hover {
  background: rgba(0,123,255,0.1);
  color: var(--color-primary);
  box-shadow: 0 0 16px rgba(0,123,255,0.3);
}

.btn--danger {
  background: var(--color-danger);
  color: #fff;
  box-shadow: 0 0 16px rgba(220,53,69,0.4);
}
.btn--danger:hover {
  background: #b02a37;
  color: #fff;
  box-shadow: 0 0 28px rgba(220,53,69,0.7);
}

.btn--success {
  background: var(--color-secondary);
  color: #fff;
}
.btn--success:hover {
  background: #1e7e34;
  color: #fff;
}

.btn--lg { padding: 0.9rem 2rem; font-size: 1.05rem; }
.btn--sm { padding: 0.45rem 1rem; font-size: 0.85rem; }

/* ---- 卡片 ---- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: var(--transition);
}

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

.card:hover::before { opacity: 1; }

.card__icon {
  width: 52px; height: 52px;
  background: rgba(0,123,255,0.12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card__title { font-size: 1.1rem; margin-bottom: 0.6rem; }
.card__desc { color: var(--color-text-muted); font-size: 0.92rem; line-height: 1.6; }

/* ---- 标签/徽章 ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.badge--primary { background: rgba(0,123,255,0.15); color: var(--color-primary); border: 1px solid rgba(0,123,255,0.3); }
.badge--success { background: rgba(40,167,69,0.15); color: var(--color-secondary); border: 1px solid rgba(40,167,69,0.3); }
.badge--danger  { background: rgba(220,53,69,0.15); color: var(--color-danger); border: 1px solid rgba(220,53,69,0.3); }
.badge--warning { background: rgba(255,193,7,0.15); color: #ffc107; border: 1px solid rgba(255,193,7,0.3); }
.badge--muted   { background: rgba(255,255,255,0.05); color: var(--color-text-muted); border: 1px solid rgba(255,255,255,0.1); }

/* ---- 区块标题 ---- */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-header__eyebrow::before,
.section-header__eyebrow::after {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--color-primary);
}

.section-header__title { margin-bottom: 0.75rem; }
.section-header__desc { color: var(--color-text-muted); max-width: 600px; margin: 0 auto; font-size: 1rem; }

/* ---- 网格 ---- */
.grid { display: grid; gap: 1.5rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* ---- Hero区 ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(13,26,38,0.95) 0%,
    rgba(13,26,38,0.7) 50%,
    rgba(13,26,38,0.85) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0,123,255,0.1);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 0.35rem 1rem;
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}

.hero__eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero__title { margin-bottom: 1.25rem; }
.hero__title span { color: var(--color-primary); }

.hero__desc {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }

.hero__stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero__stat-item { text-align: left; }
.hero__stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-heading);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.hero__stat-value span { color: var(--color-primary); }
.hero__stat-label { font-size: 0.8rem; color: var(--color-text-muted); }

/* ---- 实时告警滚动条 ---- */
.alert-ticker {
  background: rgba(220,53,69,0.08);
  border-top: 1px solid rgba(220,53,69,0.2);
  border-bottom: 1px solid rgba(220,53,69,0.2);
  padding: 0.6rem 0;
  overflow: hidden;
}

.alert-ticker__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.alert-ticker__label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-danger);
  padding: 0 1rem;
  border-right: 1px solid rgba(220,53,69,0.3);
  flex-shrink: 0;
}

.alert-ticker__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-danger);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.alert-ticker__track {
  overflow: hidden;
  flex: 1;
}

.alert-ticker__items {
  display: flex;
  gap: 3rem;
  animation: ticker-scroll 30s linear infinite;
  white-space: nowrap;
}

.alert-ticker__items:hover { animation-play-state: paused; }

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.alert-ticker__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.alert-ticker__item-badge { font-size: 0.75rem; }

/* ---- 仪表盘概览 ---- */
.dashboard-overview {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  overflow: hidden;
}

.dashboard-overview__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.dashboard-overview__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--color-secondary);
}

.status-indicator__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 0 0 rgba(40,167,69,0.5); }
  50% { box-shadow: 0 0 0 6px rgba(40,167,69,0); }
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.metric-item {
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.metric-item__value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-heading);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.metric-item__value--danger { color: var(--color-danger); }
.metric-item__value--warning { color: #ffc107; }
.metric-item__value--success { color: var(--color-secondary); }
.metric-item__value--primary { color: var(--color-primary); }

.metric-item__label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---- 特性列表 ---- */
.feature-list { list-style: none; padding: 0; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.92rem;
}
.feature-list li:last-child { border-bottom: none; }
.feature-list__icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  color: var(--color-secondary);
  margin-top: 2px;
}

/* ---- 时间线 ---- */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
}

.timeline__item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: -2.45rem; top: 0.3rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 8px var(--color-primary);
}

.timeline__date {
  font-size: 0.78rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
}

.timeline__title { font-size: 1rem; margin-bottom: 0.4rem; }
.timeline__desc { font-size: 0.88rem; color: var(--color-text-muted); }

/* ---- 告警卡片 ---- */
.alert-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-danger);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  transition: var(--transition);
}

.alert-card:hover { border-left-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.alert-card--warning { border-left-color: #ffc107; }
.alert-card--success { border-left-color: var(--color-secondary); }
.alert-card--info { border-left-color: var(--color-primary); }

.alert-card__icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.alert-card__body { flex: 1; }
.alert-card__title { font-size: 0.92rem; font-weight: 600; margin-bottom: 0.2rem; }
.alert-card__desc { font-size: 0.82rem; color: var(--color-text-muted); margin: 0; }
.alert-card__meta { font-size: 0.75rem; color: var(--color-text-dim); margin-top: 0.3rem; font-family: var(--font-mono); }

/* ---- 进度条 ---- */
.progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 0.4rem;
}

.progress-bar__fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-primary), #40a0ff);
  transition: width 1s ease;
}

.progress-bar__fill--danger { background: linear-gradient(90deg, var(--color-danger), #ff6b7a); }
.progress-bar__fill--success { background: linear-gradient(90deg, var(--color-secondary), #5dd879); }
.progress-bar__fill--warning { background: linear-gradient(90deg, #ffc107, #ffd54f); }

/* ---- 图片 ---- */
.img-fluid { max-width: 100%; height: auto; display: block; }
.img-cover { width: 100%; height: 100%; object-fit: cover; }
.img-rounded { border-radius: var(--radius-md); }
.img-card {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* ---- 表格 ---- */
.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table th {
  background: rgba(0,123,255,0.08);
  color: var(--color-text-muted);
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--color-text);
}

.data-table tr:hover td { background: rgba(0,123,255,0.04); }

/* ---- FAQ手风琴 ---- */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  background: var(--color-card);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  user-select: none;
}

.faq-item__question:hover { background: var(--color-card-hover); color: var(--color-primary); }

.faq-item__icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s;
  color: var(--color-primary);
}

.faq-item.open .faq-item__icon { transform: rotate(45deg); }

.faq-item__answer {
  display: none;
  padding: 1rem 1.25rem;
  background: rgba(0,0,0,0.15);
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
}

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

/* ---- 页脚 ---- */
.footer {
  background: rgba(0,0,0,0.3);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer__brand-desc {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 1rem 0;
}

.footer__col-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.footer__links { list-style: none; padding: 0; }
.footer__links li { margin-bottom: 0.5rem; }
.footer__links a {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  transition: var(--transition);
}
.footer__links a:hover { color: var(--color-primary); padding-left: 4px; }

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__bottom-text {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

.footer__bottom-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
}

.footer__bottom-links a {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

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

/* ---- 粒子画布 ---- */
#particles-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ---- 扫描线动效 ---- */
.scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,123,255,0.6), transparent);
  animation: scan 4s linear infinite;
  pointer-events: none;
}

@keyframes scan {
  0% { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* ---- 数字递增动画 ---- */
.count-up { font-variant-numeric: tabular-nums; }

/* ---- 内页标题区 ---- */
.page-hero {
  padding: calc(var(--nav-height) + 3rem) 0 3rem;
  background: linear-gradient(180deg, rgba(0,123,255,0.05) 0%, transparent 100%);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,123,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero__eyebrow { margin-bottom: 0.75rem; }
.page-hero__title { margin-bottom: 1rem; }
.page-hero__desc { color: var(--color-text-muted); max-width: 700px; font-size: 1.05rem; }

/* ---- 搜索框 ---- */
.search-box {
  display: flex;
  align-items: center;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,123,255,0.15);
}

.search-box__input {
  flex: 1;
  background: none;
  border: none;
  padding: 0.85rem 1.25rem;
  color: var(--color-text);
  font-size: 1rem;
  font-family: var(--font-primary);
  outline: none;
}

.search-box__input::placeholder { color: var(--color-text-dim); }

.search-box__btn {
  background: var(--color-primary);
  border: none;
  padding: 0.85rem 1.5rem;
  color: #fff;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  font-family: var(--font-primary);
}

.search-box__btn:hover { background: #0056b3; }

/* ---- 合规页 ---- */
.legal-content {
  max-width: 860px;
  margin: 0 auto;
}

.legal-content h2 { margin: 2rem 0 1rem; color: var(--color-primary); font-size: 1.2rem; }
.legal-content h3 { margin: 1.5rem 0 0.75rem; font-size: 1rem; }
.legal-content p { color: var(--color-text-muted); font-size: 0.95rem; }
.legal-content ul { color: var(--color-text-muted); font-size: 0.95rem; }

/* ---- 404页 ---- */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.error-page__code {
  font-size: clamp(6rem, 15vw, 12rem);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), #40a0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.error-page__title { font-size: 1.5rem; margin-bottom: 1rem; }
.error-page__desc { color: var(--color-text-muted); margin-bottom: 2rem; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: 60px; }

  .navbar__nav { display: none; }
  .navbar__actions .btn--nav-cta { display: none; }
  .navbar__hamburger { display: flex; }

  .navbar__nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(13,26,38,0.98);
    backdrop-filter: blur(12px);
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    gap: 0.25rem;
  }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .hero__stats { gap: 1.25rem; }
  .footer__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 56px 0; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
}

/* ---- 工具类 ---- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-secondary) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-warning { color: #ffc107 !important; }
.text-muted { color: var(--color-text-muted) !important; }
.text-dim { color: var(--color-text-dim) !important; }
.text-mono { font-family: var(--font-mono); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.w-full { width: 100%; }
.hidden { display: none !important; }

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-fadeInUp { animation: fadeInUp 0.6s ease forwards; }
.animate-fadeIn { animation: fadeIn 0.6s ease forwards; }
.animate-slideInLeft { animation: slideInLeft 0.6s ease forwards; }

[data-aos] { opacity: 0; transition: opacity 0.6s ease, transform 0.6s ease; }
[data-aos="fade-up"] { transform: translateY(30px); }
[data-aos="fade-left"] { transform: translateX(30px); }
[data-aos].aos-animate { opacity: 1; transform: none; }

/* ---- 光效装饰 ---- */
.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  margin: 2rem 0;
}

.glow-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary);
  display: inline-block;
}

/* ---- 代码块流动效果 ---- */
.code-stream {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #7ec8ff;
  line-height: 1.8;
  overflow: hidden;
  position: relative;
}

.code-stream::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40px;
  background: linear-gradient(to top, var(--color-card), transparent);
}

/* ---- 数字仪表盘环形图 ---- */
.gauge-ring {
  position: relative;
  width: 80px; height: 80px;
  flex-shrink: 0;
}

.gauge-ring svg { transform: rotate(-90deg); }
.gauge-ring__track { fill: none; stroke: rgba(255,255,255,0.06); stroke-width: 6; }
.gauge-ring__fill { fill: none; stroke-width: 6; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.gauge-ring__fill--primary { stroke: var(--color-primary); }
.gauge-ring__fill--danger { stroke: var(--color-danger); }
.gauge-ring__fill--success { stroke: var(--color-secondary); }

.gauge-ring__label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-heading);
}