:root{
      --primary:#2563eb;
      --accent:#06b6d4;
      --bg:#f4f8ff;
      --text:#0f1e3d;
      --shadow: 0 15px 35px -8px rgba(37, 99, 235, 0.15);
    }
    * { box-sizing: border-box; }
    body{
      background-color: var(--bg);
      color: var(--text);
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      line-height: 1.6;
      letter-spacing: 0.2px;
    }
    h1,h2,h3,.font-display{
      font-weight: 800;
      letter-spacing: -0.02em;
    }
    .hero-keywords {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem 1.2rem;
      justify-content: center;
      margin-top: 2.2rem;
      padding: 0.5rem 0;
    }
    .keyword-tag {
      background: rgba(255,255,255,0.75);
      backdrop-filter: blur(8px);
      padding: 0.45rem 1.4rem;
      border-radius: 60px;
      font-weight: 600;
      font-size: 1.2rem;
      color: var(--primary);
      box-shadow: 0 8px 18px -8px rgba(0,0,0,0.1);
      border: 1px solid rgba(37,99,235,0.15);
      transition: transform 0.2s;
    }
    .keyword-tag:hover { transform: translateY(-4px); }

    /* 拟物厚重+渐变高光 */
    .neomorph {
      background: #ffffff;
      box-shadow: var(--shadow), inset 0 1px 2px rgba(255,255,255,0.8);
      border-radius: 28px;
      transition: all 0.25s;
    }
    .poster-card {
      border-radius: 24px;
      overflow: hidden;
      background: white;
      box-shadow: 0 20px 30px -10px rgba(15,30,61,0.25);
      transition: transform 0.3s, box-shadow 0.3s;
      height: 100%;
      position: relative;
      border: 1px solid rgba(255,255,255,0.6);
    }
    .poster-card:hover {
      transform: translateY(-8px) scale(1.02);
      box-shadow: 0 30px 45px -10px rgba(37,99,235,0.3);
    }
    .poster-card img {
      width: 100%;
      aspect-ratio: 2 / 3;
      object-fit: cover;
      display: block;
      transition: transform 0.5s ease;
    }
    .poster-card:hover img {
      transform: scale(1.08);
    }
    .poster-info {
      padding: 0.9rem 0.9rem 1rem;
    }
    .poster-title {
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 0.3rem;
    }
    .poster-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      color: #3b4b6b;
    }
    .poster-rating i { color: #fbbf24; }

    /* 翻转卡片细节 */
    .flip-card {
      perspective: 1200px;
      cursor: pointer;
      height: 100%;
    }
    .flip-inner {
      position: relative;
      width: 100%;
      height: 100%;
      transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.3, 1);
      transform-style: preserve-3d;
      border-radius: 24px;
    }
    .flip-card.flipped .flip-inner {
      transform: rotateY(180deg);
    }
    .flip-front, .flip-back {
      backface-visibility: hidden;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: 0 20px 30px -10px rgba(15,30,61,0.25);
    }
    .flip-front {
      background: white;
    }
    .flip-back {
      position: absolute;
      inset: 0;
      transform: rotateY(180deg);
      background: linear-gradient(145deg, #ffffff, #f0f6ff);
      padding: 1rem 1.2rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
      backdrop-filter: blur(6px);
      border: 1px solid rgba(37,99,235,0.2);
    }
    .flip-back h6 { font-weight: 800; color: var(--primary); }
    .flip-back p { font-size: 0.8rem; margin-bottom: 0.35rem; }

    /* 区块滚动淡入 */
    .fade-section {
      opacity: 0;
      transform: translateY(25px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-section.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 分类胶囊 */
    .cat-chip {
      display: inline-block;
      background: white;
      padding: 0.25rem 1rem;
      border-radius: 40px;
      font-weight: 600;
      font-size: 0.8rem;
      border: 1px solid var(--primary);
      color: var(--primary);
      margin-right: 0.5rem;
      box-shadow: 0 4px 8px rgba(37,99,235,0.1);
    }

    /* 榜单奖牌 */
    .medal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      font-weight: 800;
      color: white;
      margin-right: 10px;
    }
    .medal-1 { background: linear-gradient(145deg, #f9d976, #f39b12); box-shadow: 0 4px 10px #f39b1250; }
    .medal-2 { background: linear-gradient(145deg, #bdc3c7, #8b9bb4); }
    .medal-3 { background: linear-gradient(145deg, #e8a87c, #b85f2b); }
    .medal-4 { background: #4b5d6e; }

    /* 对比表格 */
    .compare-table td, .compare-table th {
      padding: 0.8rem 1.2rem;
      border-bottom: 1px solid #dbe4f0;
    }
    .compare-table tr:hover td { background: #eef4ff; }

    /* 页脚与友链 */
    .footer-links a {
      color: white;
      opacity: 0.85;
      text-decoration: none;
      font-size: 0.9rem;
      margin-right: 1.5rem;
    }
    .footer-links a:hover { opacity: 1; }

    /* hero 背景视差 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #dbe9ff, #ffffff);
      overflow: hidden;
    }
    .hero-section::before {
      content: '';
      position: absolute;
      top: -10%; left: -10%;
      width: 120%; height: 120%;
      background-image: radial-gradient(circle at 20% 30%, rgba(37,99,235,0.1) 0%, transparent 30%),
                        radial-gradient(circle at 80% 70%, rgba(6,182,212,0.1) 0%, transparent 30%);
      background-size: cover;
      transform: translateY(-10px);
      z-index: 0;
      will-change: transform;
    }
    .hero-content { position: relative; z-index: 3; }

    /* 导航固定样式 */
    .navbar-custom {
      background: rgba(255,255,255,0.75);
      backdrop-filter: blur(15px);
      box-shadow: 0 8px 20px -12px rgba(37,99,235,0.25);
    }
    .navbar-brand {
      font-weight: 800;
      color: var(--primary);
      font-size: 1.8rem;
    }

    /* 细节 */
    .section-title-icon {
      background: var(--primary);
      color: white;
      width: 45px;
      height: 45px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 18px;
      margin-right: 12px;
      box-shadow: 0 10px 20px -6px var(--primary);
    }
    .btn-close-flip {
      background: rgba(0,0,0,0.05);
      border-radius: 40px;
      padding: 0 8px;
      position: absolute;
      top: 10px; right: 12px;
      font-size: 1.2rem;
      cursor: pointer;
      z-index: 20;
      color: var(--text);
    }
    @media (max-width: 768px) {
      h1 { font-size: 2.6rem !important; }
      .keyword-tag { font-size: 1rem; }
    }

/* --- 子页面追加 --- */
/* 保证所有组件与首页深色/浅色协调一致 —— 这里复用首页 :root 变量 */
        :root {
            --primary: #2563eb;
            --accent: #06b6d4;
            --bg: #f4f8ff;
            --text: #0f1e3d;
            --shadow: 0 15px 35px -8px rgba(37, 99, 235, 0.15);
        }
/* 避免bootstrap默认白底侵入, 但用栅格为主, 少量覆盖 */
        .navbar-custom {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow);
        }
.navbar-custom .nav-link {
            color: var(--text);
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            transition: 0.2s;
        }
.navbar-custom .nav-link:hover,
        .navbar-custom .nav-link.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
        }
.navbar-brand i {
            color: var(--primary);
            font-size: 1.4rem;
        }
/* 页面特有卡片/区块, 与首页 neomorph 一致 */
        .about-hero {
            background: linear-gradient(145deg, rgba(255,255,255,0.85), rgba(244,248,255,0.9));
            border-radius: 40px;
            box-shadow: var(--shadow);
            padding: 3.5rem 3rem;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(37,99,235,0.1);
        }
.about-section-card {
            background: rgba(255,255,255,0.65);
            backdrop-filter: blur(6px);
            border-radius: 28px;
            box-shadow: var(--shadow);
            padding: 2rem 2.2rem;
            border: 1px solid rgba(37,99,235,0.08);
            transition: transform 0.2s;
            height: 100%;
        }
.about-section-card:hover {
            transform: translateY(-4px);
        }
.hero-keywords .keyword-tag {
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
/* 首页用过的 chip 样式 */
        .cat-chip {
            background: white;
            padding: 0.4rem 1.2rem;
            border-radius: 40px;
            box-shadow: 0 4px 12px rgba(37,99,235,0.08);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text);
        }
h1, h2, h3 {
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text);
        }
h2 {
            font-size: 1.8rem;
            border-left: 6px solid var(--primary);
            padding-left: 1rem;
        }
.text-accent {
            color: var(--primary);
        }
.btn-close-flip:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
        }

/* --- 子页面追加 --- */
/* 确保Bootstrap组件不破坏深色/浅色风格——本页主要用自写类，但若有.card需要兜底 */
    .card, .card-body, .card-header, .card-footer {
      background: var(--bg, #f4f8ff);
      color: var(--text, #0f1e3d);
      border-color: rgba(37, 99, 235, 0.15);
    }
.form-control, .form-select {
      background: #ffffff;
      color: var(--text, #0f1e3d);
      border: 1px solid rgba(37, 99, 235, 0.2);
    }
.form-control::placeholder { color: #6c7a9a; }
.accordion-button, .accordion-item {
      background: var(--bg, #f4f8ff);
      color: var(--text, #0f1e3d);
    }
.accordion-button:not(.collapsed) {
      background: rgba(37, 99, 235, 0.08);
      color: var(--primary, #2563eb);
    }
/* 本页特有组件类 */
    .guide-section {
      background: rgba(255,255,255,0.6);
      backdrop-filter: blur(4px);
      border-radius: 28px;
      padding: 2.2rem;
      box-shadow: var(--shadow);
      margin-bottom: 2.5rem;
      border: 1px solid rgba(37,99,235,0.1);
    }
.guide-icon-badge {
      width: 48px; height: 48px;
      background: var(--primary);
      color: #fff;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-right: 1rem;
      box-shadow: 0 8px 18px -6px rgba(37,99,235,0.4);
    }
.step-list {
      list-style: none;
      padding-left: 0;
      counter-reset: step-counter;
    }
.step-list li {
      counter-increment: step-counter;
      padding: 0.9rem 0 0.9rem 3rem;
      position: relative;
      border-bottom: 1px dashed rgba(37,99,235,0.2);
      font-weight: 500;
    }
.step-list li::before {
      content: counter(step-counter);
      position: absolute;
      left: 0;
      top: 0.8rem;
      width: 32px; height: 32px;
      background: var(--accent);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      box-shadow: 0 4px 10px rgba(6,182,212,0.3);
    }
.tip-box {
      background: rgba(6, 182, 212, 0.08);
      border-left: 4px solid var(--accent);
      padding: 1.2rem 1.5rem;
      border-radius: 0 20px 20px 0;
      margin: 1.5rem 0;
    }
.device-card {
      background: #ffffff;
      border-radius: 24px;
      padding: 1.8rem 1.2rem;
      text-align: center;
      box-shadow: 0 8px 20px rgba(37,99,235,0.08);
      transition: transform .2s ease;
      height: 100%;
      border: 1px solid rgba(37,99,235,0.07);
    }
.device-card:hover {
      transform: translateY(-6px);
    }
.device-card i {
      font-size: 2.2rem;
      color: var(--primary);
      margin-bottom: 0.8rem;
    }
.device-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text);
    }
.device-card p {
      font-size: 0.9rem;
      color: #5b6e8e;
      margin-bottom: 0;
    }
.guide-section { padding: 1.5rem; }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件不出现白底黑字，统一用站点配色覆盖 */
    .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
    .form-control, .form-select, .form-label, .input-group-text,
    .table, .list-group-item, .accordion-item, .accordion-button, .accordion-body,
    .modal-content, .modal-header, .modal-body, .dropdown-menu, .dropdown-item,
    .nav-link, .navbar, .navbar-brand, .btn-light, .btn-outline-* {
      background: transparent !important;
      color: var(--text) !important;
      border-color: rgba(37, 99, 235, 0.2) !important;
    }
/* 占位符颜色适配 */
    .form-control::placeholder {
      color: rgba(15, 30, 61, 0.4) !important;
    }
/* 卡片风格微调，与站内 neomorph 保持一致 */
    .card, .list-group-item, .accordion-item {
      box-shadow: var(--shadow);
      background: rgba(255, 255, 255, 0.6) !important;
      backdrop-filter: blur(4px);
    }
/* 链接默认色 */
    a {
      color: var(--primary);
    }
/* 免责声明正文段落间距 */
    .disclaimer-section p {
      line-height: 1.75;
      color: #2c3e66;
    }
/* 强调标签 */
    .disclaimer-highlight {
      background: linear-gradient(145deg, #e0ebff, #ffffff);
      box-shadow: var(--shadow);
      border-left: 4px solid var(--primary);
    }

/* --- 子页面追加 --- */
/* 排行榜专属样式 */
    .rank-hero {
      background: linear-gradient(135deg, #0f1e3d 0%, #2563eb 100%);
      color: #fff;
      padding: 4rem 0 3rem;
      border-radius: 0 0 2rem 2rem;
    }
.rank-hero h1 {
      font-weight: 800;
      font-size: 2.4rem;
    }
.rank-hero p {
      opacity: 0.9;
      max-width: 600px;
    }
.rank-card {
      background: #fff;
      border-radius: 1rem;
      box-shadow: var(--shadow);
      padding: 1.5rem;
      margin-bottom: 1.5rem;
      transition: transform 0.3s;
    }
.rank-card:hover {
      transform: translateY(-4px);
    }
.rank-item {
      display: flex;
      align-items: center;
      padding: 1rem 0;
      border-bottom: 1px solid rgba(15, 30, 61, 0.08);
    }
.rank-item:last-child {
      border-bottom: none;
    }
.rank-num {
      font-size: 1.6rem;
      font-weight: 800;
      width: 60px;
      text-align: center;
      color: #cbd5e1;
    }
.rank-num.top-1 { color: #f59e0b; }
.rank-num.top-2 { color: #94a3b8; }
.rank-num.top-3 { color: #b45309; }
.rank-info {
      flex: 1;
      padding: 0 1rem;
    }
.rank-title {
      font-weight: 600;
      color: var(--text);
      font-size: 1.05rem;
    }
.rank-meta {
      font-size: 0.85rem;
      color: #6b7280;
      margin-top: 0.2rem;
    }
.rank-score {
      font-weight: 700;
      font-size: 1.2rem;
      color: var(--primary);
    }
.trend-tag {
      display: inline-block;
      padding: 0.2rem 0.6rem;
      border-radius: 999px;
      font-size: 0.75rem;
      font-weight: 600;
      margin-left: 0.5rem;
    }
.trend-up { background: #d1fae5; color: #065f46; }
.trend-down { background: #fee2e2; color: #991b1b; }
.trend-flat { background: #e2e8f0; color: #475569; }
.rank-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      background: var(--primary);
      color: #fff;
      padding: 0.25rem 0.8rem;
      border-radius: 999px;
      font-size: 0.8rem;
      font-weight: 600;
    }
.genre-filter {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 1.5rem;
    }
.filter-chip {
      padding: 0.4rem 1rem;
      border-radius: 999px;
      background: rgba(37, 99, 235, 0.08);
      color: var(--text);
      font-size: 0.85rem;
      font-weight: 500;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s;
    }
.filter-chip:hover, .filter-chip.active {
      background: var(--primary);
      color: #fff;
    }
.ranking-tabs {
      display: flex;
      gap: 0.5rem;
      border-bottom: 2px solid rgba(15, 30, 61, 0.1);
      padding-bottom: 0.5rem;
      margin-bottom: 1.5rem;
    }
.tab-btn {
      padding: 0.5rem 1.2rem;
      border: none;
      background: transparent;
      font-weight: 600;
      color: #64748b;
      border-radius: 999px;
      transition: all 0.3s;
    }
.tab-btn:hover { background: rgba(37, 99, 235, 0.1); }
.tab-btn.active {
      background: var(--primary);
      color: #fff;
    }

/* --- 子页面追加 --- */
/* 页面专有样式（轻量，仅补充guide专属元素） */
        .guide-hero {
            background: linear-gradient(135deg, #f4f8ff 0%, #e0edff 100%);
            border-radius: 28px;
            padding: 2.8rem 2rem;
            margin-bottom: 2.5rem;
            box-shadow: var(--shadow);
        }
.step-card {
            background: #ffffffd9;
            backdrop-filter: blur(4px);
            border-radius: 24px;
            padding: 1.8rem 1.5rem;
            height: 100%;
            border: 1px solid #ffffff70;
            box-shadow: 0 10px 25px -10px rgba(37, 99, 235, 0.12);
            transition: 0.2s;
        }
.step-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 30px -12px rgba(37, 99, 235, 0.2);
        }
.step-num {
            background: var(--primary);
            color: white;
            font-weight: 800;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
.guide-section-title {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            margin: 2.2rem 0 1.5rem;
            color: var(--text);
        }
.guide-section-title i {
            color: var(--primary);
            font-size: 1.7rem;
        }
.table-highlight td {
            background: transparent;
            color: var(--text);
            border-color: #cbd9f0;
        }
.accordion-custom .accordion-item {
            background: #f4f8ff;
            border: 1px solid #d4e2fa;
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
        }
.accordion-custom .accordion-button {
            background: #f4f8ff;
            color: var(--text);
            font-weight: 600;
            border: none;
            box-shadow: none;
        }
.accordion-custom .accordion-button:not(.collapsed) {
            background: #e4edfd;
            color: var(--primary);
        }
.accordion-custom .accordion-body {
            background: #f4f8ff;
            color: #1e2a44;
            border-top: 1px dashed #b8cbf0;
        }
.nav-link.active-guide {
            color: var(--primary) !important;
            font-weight: 700;
        }
.badge-ht {
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35em 0.9em;
            border-radius: 40px;
            letter-spacing: 0.5px;
        }

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