:root {
  --primary: #dc2626;
  --accent: #fb923c;
  --bg: #141013;
  --text: #fef2f2;
  --card-bg: #1e1819;
  --border-light: rgba(254, 242, 242, 0.08);
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.3);
}
* { box-sizing: border-box; }
body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
h1,h2,h3,h4,h5 { font-weight: 800; letter-spacing: -0.01em; }
.font-mono-num { font-family: 'Courier New', monospace; font-weight: 700; }

/* 顶栏 */
.top-bar {
  background: var(--bg);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all 0.4s ease;
  backdrop-filter: blur(8px);
}
.top-bar.scrolled { background: rgba(20,16,19,0.85); box-shadow: 0 4px 20px rgba(0,0,0,0.5); }
.top-bar .navbar-brand {
  font-weight: 900;
  font-size: 1.6rem;
  color: var(--primary);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.top-bar .nav-link {
  color: var(--text);
  font-weight: 500;
  padding: 0.5rem 1rem;
  position: relative;
  opacity: 0.85;
  transition: all 0.2s;
}
.top-bar .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}
.top-bar .nav-link:hover { opacity: 1; color: var(--accent); }
.top-bar .nav-link:hover::after { width: 60%; }
.navbar-toggler { border: 1px solid var(--border-light); color: var(--text); }
.navbar-toggler:focus { box-shadow: none; }

/* Hero */
.hero-section {
  position: relative;
  padding: 6rem 0 5rem;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(220,38,38,0.15) 0%, rgba(251,146,60,0.05) 50%, rgba(20,16,19,0) 100%);
}
.hero-media {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  object-fit: cover;
  aspect-ratio: 16/10;
}
.hero-float {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
}
.hero-content { position: relative; z-index: 2; }
.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid rgba(251,146,60,0.3);
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(251,146,60,0.08);
  margin-bottom: 1.5rem;
}
.hero-title { font-size: 3.4rem; font-weight: 900; line-height: 1.1; margin-bottom: 1.2rem; }
.hero-title .brand-red { color: var(--primary); }
.hero-desc { font-size: 1.1rem; color: rgba(254,242,242,0.75); max-width: 560px; margin-bottom: 2rem; }
.hero-btn { border-radius: 8px; padding: 10px 24px; font-weight: 600; font-size: 1rem; }
.btn-main { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-main:hover { background: #b91c1c; color: #fff; }
.btn-outline-light2 { border: 1px solid rgba(254,242,242,0.4); color: var(--text); }
.btn-outline-light2:hover { background: rgba(254,242,242,0.1); color: var(--text); }
.hero-signals {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 24px;
  margin-top: 2.5rem;
}
.signal-item .num { font-size: 1.4rem; font-weight: 800; color: var(--accent); font-family: monospace; }
.signal-item .label { font-size: 0.8rem; color: rgba(254,242,242,0.6); }
.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2rem;
}
.keyword-cloud span {
  background: rgba(220,38,38,0.12);
  border: 1px solid rgba(220,38,38,0.2);
  color: var(--text);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  opacity: 0.8;
  animation: floatPulse 3s infinite alternate;
}
@keyframes floatPulse {
  0% { transform: translateY(0); }
  100% { transform: translateY(-4px); }
}

/* section 通用 */
.section-pad { padding: 4.5rem 0; }
.section-num {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.section-title { font-size: 2rem; font-weight: 900; margin-bottom: 0.5rem; }
.section-sub { color: rgba(254,242,242,0.55); font-size: 1rem; max-width: 600px; }
.section-head { margin-bottom: 2.5rem; }

/* FAQ 手风琴 */
.accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 8px !important;
  margin-bottom: 12px;
  overflow: hidden;
}
.accordion-button {
  background: var(--card-bg);
  color: var(--text);
  font-weight: 600;
  padding: 1.2rem 1.4rem;
  font-size: 1.05rem;
}
.accordion-button:not(.collapsed) { background: rgba(220,38,38,0.1); color: var(--text); }
.accordion-button:focus { box-shadow: none; border-color: transparent; }
.accordion-body { background: var(--card-bg); color: rgba(254,242,242,0.8); padding: 0 1.4rem 1.2rem; }
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23fef2f2' class='bi bi-plus-lg' viewBox='0 0 16 16'%3E%3Cpath d='M8 1a.5.5 0 0 1 .5.5V7H14a.5.5 0 0 1 0 1H8.5v5.5a.5.5 0 0 1-1 0V8H2a.5.5 0 0 1 0-1h5.5V1.5A.5.5 0 0 1 8 1Z'/%3E%3C/svg%3E");
  transition: all 0.3s;
}
.accordion-button:not(.collapsed)::after { transform: rotate(45deg); }

/* 为什么选择 4卡 */
.why-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 2rem 1.5rem;
  height: 100%;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.why-card:hover { transform: translateY(-4px); border-color: rgba(220,38,38,0.4); }
.why-card .icon-circle {
  width: 50px; height: 50px;
  background: rgba(220,38,38,0.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  margin-bottom: 1rem;
}
.why-card .why-title { font-weight: 700; margin-bottom: 0.5rem; }
.why-card p { color: rgba(254,242,242,0.65); font-size: 0.95rem; }

/* 海报网格 */
.poster-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  width: 100%;
}
.poster-card {
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
  position: relative;
}
.poster-card:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
.poster-img-wrap {
  width: 100%;
  aspect-ratio: 2/3;
  overflow: hidden;
  position: relative;
}
.poster-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.poster-card:hover .poster-img-wrap img { transform: scale(1.08); }
.poster-badge {
  position: absolute;
  top: 8px; left: 8px;
  background: rgba(220,38,38,0.9);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  z-index: 2;
}
.poster-mask {
  position: absolute;
  inset: auto 0 0 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 12px;
  opacity: 0;
  transition: opacity 0.3s;
}
.poster-card:hover .poster-mask { opacity: 1; }
.poster-mask .mask-text { font-size: 0.75rem; color: rgba(255,255,255,0.9); line-height: 1.5; }
.poster-info { padding: 12px; }
.poster-info .title { font-weight: 700; font-size: 0.95rem; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.poster-info .meta { font-size: 0.75rem; color: rgba(254,242,242,0.55); display: flex; justify-content: space-between; }
.rating { color: var(--accent); font-weight: 700; }
.year { font-family: monospace; }

/* 资讯卡片 */
.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  margin-bottom: 12px;
  transition: all 0.2s;
}
.news-card:hover { border-color: rgba(220,38,38,0.3); transform: translateX(4px); }
.news-tag {
  display: inline-block;
  font-size: 0.65rem;
  color: var(--accent);
  background: rgba(251,146,60,0.12);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 6px;
}
.news-card .title { font-weight: 600; font-size: 1rem; }
.news-card .brief { font-size: 0.85rem; color: rgba(254,242,242,0.6); margin-top: 4px; }

/* 分类区块 */
.cat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 1.8rem 1.2rem;
  text-align: center;
  transition: all 0.3s;
  height: 100%;
}
.cat-card:hover { border-color: var(--primary); }
.cat-card i { font-size: 2rem; color: var(--primary); margin-bottom: 0.8rem; }
.cat-card .cat-name { font-weight: 700; }
.cat-card .cat-count { font-size: 0.8rem; color: rgba(254,242,242,0.5); }

/* 步骤区 */
.step-card { text-align: center; padding: 1rem; }
.step-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800;
  margin-bottom: 1rem;
  font-family: monospace;
}
.step-title { font-weight: 700; margin-bottom: 6px; }

/* 规范卡片 */
.rule-item { display: flex; gap: 12px; margin-bottom: 1rem; }
.rule-item .rule-icon { color: var(--primary); flex-shrink: 0; margin-top: 4px; }
.rule-item p { margin: 0; font-size: 0.95rem; color: rgba(254,242,242,0.8); }
.numbered-list { counter-reset: step; list-style: none; padding: 0; }
.numbered-list li { counter-increment: step; position: relative; padding-left: 40px; margin-bottom: 1.2rem; }
.numbered-list li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px; height: 28px;
  border-radius: 6px;
  background: rgba(220,38,38,0.2);
  color: var(--primary);
  font-family: monospace;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
}

/* 对比表 */
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
}
.compare-table th, .compare-table td { padding: 1rem 1.2rem; text-align: left; border-bottom: 1px solid var(--border-light); }
.compare-table th { background: rgba(220,38,38,0.1); font-weight: 700; color: var(--text); }
.compare-table td { font-size: 0.95rem; color: rgba(254,242,242,0.8); }
.compare-table .feature-col { font-weight: 600; }
.compare-table tr:last-child td { border-bottom: none; }

/* 场景卡 */
.scene-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 1.5rem;
  height: 100%;
}
.scene-card h5 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.scene-card p { font-size: 0.9rem; color: rgba(254,242,242,0.6); margin-bottom: 0; }

/* 页脚 */
.site-footer {
  background: rgba(0,0,0,0.3);
  border-top: 1px solid var(--border-light);
  padding: 3rem 0 2rem;
  margin-top: 3rem;
}
.site-footer h6 { color: var(--text); font-weight: 700; margin-bottom: 1rem; }
.site-footer a { color: rgba(254,242,242,0.7); text-decoration: none; font-size: 0.9rem; display: block; padding: 3px 0; transition: all 0.2s; }
.site-footer a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid var(--border-light); padding-top: 1.5rem; margin-top: 2rem; font-size: 0.85rem; color: rgba(254,242,242,0.5); }
.footer-bottom .brand { color: var(--primary); font-weight: 800; }

/* 抽屉弹窗 */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}
.drawer-overlay.show { opacity: 1; visibility: visible; }
.drawer-panel {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: #1e1819;
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
  z-index: 10000;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  max-height: 80vh;
  overflow-y: auto;
  padding: 1.5rem;
}
.drawer-panel.show { transform: translateY(0); }
.drawer-close {
  position: absolute;
  top: 12px; right: 16px;
  font-size: 1.5rem;
  color: rgba(254,242,242,0.6);
  cursor: pointer;
  background: none; border: none;
  z-index: 5;
}
.drawer-close:hover { color: var(--accent); }

/* 响应式 */
@media (max-width: 992px) {
  .poster-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-title { font-size: 2.5rem; }
  .hero-signals { gap: 14px; }
}
@media (max-width: 768px) {
  .poster-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 2rem; }
  .section-pad { padding: 3rem 0; }
  .hero-media { aspect-ratio: 16/12; }
  .signal-item .num { font-size: 1rem; }
  .hero-signals { gap: 10px; flex-wrap: wrap; }
}

/* --- 子页面追加 --- */
/* 本页专属微调——覆盖bootstrap组件默认白底，与站点风格统一 */
        .card, .card-body, .card-header, .card-footer, .list-group-item {
            background: var(--card-bg) !important;
            color: var(--text) !important;
            border-color: var(--border-light) !important;
        }
.form-control, .form-select {
            background: rgba(0,0,0,0.35) !important;
            color: var(--text) !important;
            border: 1px solid var(--border-light) !important;
        }
.form-control::placeholder {
            color: rgba(255,255,255,0.45) !important;
        }
.form-label {
            color: var(--text) !important;
        }
.accordion-item, .accordion-button, .accordion-body {
            background: var(--card-bg) !important;
            color: var(--text) !important;
            border-color: var(--border-light) !important;
        }
.dropdown-menu, .dropdown-item {
            background: var(--card-bg) !important;
            color: var(--text) !important;
        }
.nav-link, .navbar, .navbar-brand, .btn-light, .btn-outline-light {
            /* 保持透明/继承，只对需要背景的做处理 */
        }
/* 小调整 */
        .guide-hero {
            padding: 3rem 0 1.5rem;
        }
.guide-card-hover:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.4);
            transition: 0.2s;
        }
.step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.9rem;
            margin-right: 10px;
        }
.table {
            --bs-table-bg: transparent;
            color: var(--text);
        }
.table > :not(caption) > * > * {
            background-color: rgba(20,16,19,0.6);
            color: var(--text);
            border-bottom: 1px solid var(--border-light);
        }

/* --- 子页面追加 --- */
.about-hero {
            background: linear-gradient(135deg, rgba(20,16,19,.92) 0%, rgba(30,24,25,.85) 100%), url('https://picsum.photos/1920/600') center/cover no-repeat;
            padding: 80px 0 60px;
            border-bottom: 1px solid var(--border-light);
        }
.about-content-section {
            padding: 60px 0;
            border-bottom: 1px solid var(--border-light);
        }
.about-content-section:last-of-type {
            border-bottom: none;
        }
.about-card-custom {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px;
            height: 100%;
            transition: transform .3s ease, box-shadow .3s ease;
        }
.about-card-custom:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0,0,0,.4);
        }
.about-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(220,38,38,.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary);
            font-size: 20px;
        }
.about-stat {
            text-align: center;
            padding: 24px 16px;
        }
.about-stat-number {
            font-family: 'Inter', sans-serif;
            font-weight: 800;
            font-size: 2.2rem;
            color: var(--primary);
            line-height: 1.2;
        }
.about-stat-label {
            color: var(--text);
            opacity: .75;
            font-size: .9rem;
            margin-top: 4px;
            letter-spacing: .5px;
        }
.highlight-text {
            color: var(--accent);
            font-weight: 600;
        }
.content-paragraph {
            line-height: 1.8;
            color: var(--text);
            opacity: .88;
            margin-bottom: 16px;
        }
.quote-box {
            border-left: 3px solid var(--primary);
            padding: 16px 20px;
            background: rgba(220,38,38,.06);
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            font-style: italic;
        }
.value-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
.value-list li {
            padding: 8px 0;
            padding-left: 28px;
            position: relative;
            line-height: 1.7;
            color: var(--text);
            opacity: .88;
        }
.value-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary);
        }

/* --- 子页面追加 --- */
/* 隐私政策页面专属样式 */
        .privacy-hero {
            background: linear-gradient(135deg, rgba(20,16,19,0.9) 0%, rgba(30,24,25,0.95) 100%);
            border-bottom: 1px solid var(--border-light);
            padding: 80px 0 50px;
            position: relative;
            overflow: hidden;
        }
.privacy-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(220,38,38,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
.privacy-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text);
            position: relative;
            z-index: 1;
        }
.privacy-hero h1 span {
            color: var(--primary);
        }
.privacy-hero p {
            color: rgba(254,242,242,0.7);
            max-width: 700px;
            line-height: 1.8;
        }
.policy-wrap {
            max-width: 960px;
            margin: 0 auto;
            padding: 60px 20px;
        }
.policy-card {
            background: var(--card-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 40px 40px 50px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
            transition: border-color 0.3s ease;
        }
.policy-card:hover {
            border-color: rgba(220,38,38,0.3);
        }
.policy-section {
            margin-bottom: 40px;
            position: relative;
            padding-left: 20px;
        }
.policy-section::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 3px;
            height: 28px;
            background: var(--primary);
            border-radius: 2px;
        }
.policy-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }
.policy-section h2 i {
            color: var(--accent);
            margin-right: 10px;
            font-size: 1.3rem;
        }
.policy-section p {
            color: rgba(254,242,242,0.75);
            line-height: 1.9;
            margin-bottom: 16px;
            font-size: 0.95rem;
        }
.policy-section ul {
            color: rgba(254,242,242,0.75);
            line-height: 1.9;
            padding-left: 20px;
            margin-bottom: 16px;
        }
.policy-section li {
            margin-bottom: 8px;
            position: relative;
        }
.policy-section li::marker {
            color: var(--primary);
        }
.policy-section strong {
            color: var(--text);
            font-weight: 600;
        }
.highlight-box {
            background: rgba(220,38,38,0.08);
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
.highlight-box p {
            margin-bottom: 0;
            font-size: 0.95rem;
        }
.contact-block {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
.contact-item {
            background: rgba(220,38,38,0.06);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 16px 24px;
            flex: 1;
            min-width: 200px;
            transition: all 0.3s ease;
        }
.contact-item:hover {
            background: rgba(220,38,38,0.12);
            border-color: rgba(220,38,38,0.4);
            transform: translateY(-3px);
        }
.contact-item i {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 10px;
            display: block;
        }
.contact-item span {
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
        }
.contact-item p {
            color: rgba(254,242,242,0.6);
            font-size: 0.85rem;
            margin: 5px 0 0;
        }
.last-updated {
            display: inline-block;
            background: rgba(251,146,60,0.1);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 30px;
            border: 1px solid rgba(251,146,60,0.2);
        }
.privacy-hero h1 {
                font-size: 2rem;
            }
.policy-card {
                padding: 25px 20px 35px;
            }
.policy-section {
                padding-left: 15px;
            }
.contact-block {
                flex-direction: column;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-header { background:transparent !important; }