:root{
        --main:#b45309;
        --accent:#ca8a04;
        --bg:#fefce8;
        --text:#451a03;
        --hard-shadow:6px 6px 0 #451a03;
        --soft-shadow:3px 3px 0 #b45309;
    }
    *{box-sizing:border-box;margin:0;padding:0;}
    body{
        background:var(--bg);
        color:var(--text);
        font-family:'Inter',sans-serif;
        font-weight:400;
        line-height:1.6;
        position:relative;
        overflow-x:hidden;
    }
    /* 几何色块背景装饰 */
    body::before, body::after{
        content:"";
        position:fixed;
        width:220px;height:220px;
        background:var(--accent);
        opacity:0.08;
        z-index:-2;
        border-radius:0; /* 全直角 */
        pointer-events:none;
    }
    body::before{ top:120px; left:-80px; clip-path:polygon(0 0, 100% 0, 0 100%); }
    body::after{ bottom:40px; right:-60px; clip-path:polygon(0 0, 100% 100%, 0 100%); background:var(--main); opacity:0.1; }

    /* 额外的形状散布 */
    .geo-shapes .shape{
        position:absolute;
        z-index:-1;
        opacity:0.1;
        pointer-events:none;
    }
    .geo-shapes .shape-1{ top:60%; left:5%; width:80px;height:80px;background:var(--main); clip-path:circle(50% at 50% 50%); }
    .geo-shapes .shape-2{ top:15%; right:8%; width:90px;height:90px;background:var(--accent); clip-path:polygon(50% 0%, 100% 100%, 0 100%); }
    .geo-shapes .shape-3{ top:75%; right:15%; width:60px;height:60px;background:var(--main); clip-path:polygon(0 0, 100% 0, 100% 100%); }

    h1,h2,h3,h4,.font-display{
        font-family:'Inter',sans-serif;
        font-weight:900;
        letter-spacing:-0.5px;
        color:var(--text);
    }
    h1{ font-size:calc(2rem + 2vw); line-height:1.1; }
    h2{ font-size:calc(1.5rem + 1vw); font-weight:800; }
    h3{ font-weight:800; }
    .lead{ font-size:1.1rem; font-weight:400; }

    /* 硬朗直角+粗边框 */
    .btn, .card, .badge, .nav-box, .step-item, .faq-item{
        border-radius:0 !important;
        border:2px solid var(--text) !important;
        box-shadow:var(--hard-shadow);
    }
    .btn{
        background:var(--main);
        color:#fff;
        font-weight:600;
        transition:all .2s ease;
        padding:0.6rem 1.2rem;
        position:relative;
        overflow:hidden;
        z-index:1;
    }
    .btn::after{
        content:"";
        position:absolute;
        top:0; left:-100%;
        width:100%;height:100%;
        background:linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
        transition:left .4s;
        z-index:2;
    }
    .btn:hover{
        transform:translate(2px,2px);
        box-shadow:2px 2px 0 var(--text);
        background:var(--accent);
        color:#fff;
    }
    .btn:hover::after{ left:100%; }

    /* 导航吸顶 */
    .navbar-cyber{
        background:var(--bg);
        border-bottom:3px solid var(--text);
        padding:0.8rem 1rem;
        transition: background 0.3s, box-shadow 0.3s;
        z-index:999;
        box-shadow:0 0 0 var(--text);
    }
    .navbar-cyber.scrolled{
        background:rgba(254,252,232,0.85);
        backdrop-filter:blur(8px);
        box-shadow:0 4px 0 var(--text);
    }
    .navbar-cyber .navbar-brand{
        font-weight:900;
        font-size:1.5rem;
        color:var(--text);
        letter-spacing:-0.5px;
        display:inline-flex;
        align-items:center;
    }
    .navbar-cyber .navbar-brand i{
        color:var(--main);
        margin-right:8px;
    }
    .nav-link-custom{
        font-weight:600;
        color:var(--text);
        margin:0 0.8rem;
        border-bottom:2px solid transparent;
        padding:0.2rem 0;
        transition:border-color 0.2s;
        text-decoration:none;
    }
    .nav-link-custom:hover{ border-bottom-color:var(--main); color:var(--main); }

    /* Hero 标签云 */
    .hero-tags span{
        display:inline-block;
        background:var(--bg);
        border:2px solid var(--text);
        box-shadow:3px 3px 0 var(--accent);
        padding:0.2rem 0.9rem;
        margin:0.3rem;
        font-weight:600;
        font-size:0.9rem;
        transition:all .2s;
    }
    .hero-tags span:hover{
        transform:translate(-2px,-2px);
        box-shadow:5px 5px 0 var(--main);
        background:#fff;
    }

    /* 卡片网格 */
    .feature-card{
        background:#fff;
        border:2px solid var(--text);
        box-shadow:var(--hard-shadow);
        padding:1.5rem;
        transition:all .25s;
        height:100%;
        opacity:0;
        transform:translateY(25px);
    }
    .feature-card.reveal{
        opacity:1;
        transform:translateY(0);
        transition: opacity .5s, transform .5s;
    }
    .feature-card:nth-child(2){ transition-delay:0.1s; }
    .feature-card:nth-child(3){ transition-delay:0.2s; }
    .feature-card:nth-child(4){ transition-delay:0.3s; }
    .feature-card:hover{
        transform:translate(-3px,-3px);
        box-shadow:10px 10px 0 var(--text);
    }
    .feature-card i{
        font-size:2.5rem;
        color:var(--main);
        margin-bottom:1rem;
    }

    /* 步骤条 */
    .step-item{
        background:#fff;
        border:2px solid var(--text);
        padding:1.2rem;
        box-shadow:var(--soft-shadow);
        position:relative;
        opacity:0;
        transform:translateX(20px);
    }
    .step-item.reveal{
        opacity:1;
        transform:translateX(0);
        transition: all .5s;
    }
    .step-item:nth-child(2){ transition-delay:0.15s; }
    .step-item:nth-child(3){ transition-delay:0.3s; }
    .step-num{
        display:inline-block;
        background:var(--main);
        color:#fff;
        border:2px solid var(--text);
        width:2rem; height:2rem;
        text-align:center;
        line-height:1.8rem;
        font-weight:900;
        margin-right:0.5rem;
        box-shadow:2px 2px 0 var(--text);
    }

    /* FAQ折叠 */
    .faq-item{
        background:#fff;
        box-shadow:var(--soft-shadow);
        margin-bottom:1rem;
        border:2px solid var(--text);
        padding:0;
    }
    .faq-q{
        padding:1rem 1.5rem;
        font-weight:700;
        cursor:pointer;
        background:var(--bg);
        border-bottom:2px solid var(--text);
        display:flex;
        justify-content:space-between;
        align-items:center;
    }
    .faq-a{
        padding:1rem 1.5rem;
        background:#fff;
        border-bottom:2px solid var(--text);
    }
    .faq-item:last-child .faq-a{ border-bottom:none; }

    /* 页脚 / 友链 */
    .footer-links a{
        color:var(--text);
        font-weight:600;
        text-decoration:underline;
        text-underline-offset:3px;
    }
    .footer-links a:hover{ color:var(--main); }

    /* 通用区块间距 */
    .section-pad{ padding:4rem 0; }
    .container{ max-width: 1200px; }

    /* 平滑滚动 */
    html{scroll-behavior:smooth;}
    @media (max-width: 992px) {
        .navbar-collapse{ background:var(--bg); padding:1rem; border:2px solid var(--text); }
    }
    /* 错落卡片显隐 */
    .reveal{
        opacity:0;
        transform:translateY(25px);
        transition:opacity .5s, transform .5s;
    }
    .reveal.in-view{
        opacity:1;
        transform:translateY(0);
    }
    .d-inline-block{transition:all .2s;}

/* --- 子页面追加 --- */
/* 本页特定样式 - 只放非覆盖性质的微调，配色沿用全局 :root */
        .about-hero {
            background: var(--bg);
            border-bottom: 4px solid var(--main);
            padding: 3rem 0 2rem;
        }
.about-hero h1 {
            font-weight: 800;
            color: var(--text);
            text-shadow: 2px 2px 0 var(--soft-shadow);
        }
.about-section {
            background: var(--bg);
            border-radius: 0;
            padding: 2.5rem 1.5rem;
            border: 2px solid var(--main);
            box-shadow: var(--hard-shadow);
            margin-bottom: 2rem;
        }
.about-section h2 {
            font-weight: 700;
            color: var(--main);
            border-left: 8px solid var(--accent);
            padding-left: 1rem;
            margin-bottom: 1.5rem;
        }
.about-section h3 {
            font-weight: 600;
            color: var(--text);
            margin-top: 1.5rem;
        }
.about-section p, .about-section li {
            color: var(--text);
            line-height: 1.8;
        }
.feature-mini {
            background: rgba(255, 251, 235, 0.8);
            border: 1px solid var(--accent);
            padding: 1rem 1.25rem;
            margin: 1rem 0;
            box-shadow: var(--soft-shadow);
        }
.feature-mini i {
            color: var(--main);
            margin-right: 0.75rem;
            width: 1.8rem;
            text-align: center;
        }
.insight-quote {
            background: var(--accent);
            color: var(--bg);
            padding: 1.5rem 2rem;
            font-weight: 600;
            border-left: 6px solid var(--main);
            margin: 2rem 0;
            box-shadow: var(--soft-shadow);
        }
.insight-quote i {
            margin-right: 1rem;
        }
.list-about {
            list-style: none;
            padding-left: 0;
        }
.list-about li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed var(--accent);
        }
.list-about li:last-child {
            border-bottom: none;
        }
.list-about i {
            color: var(--main);
            margin-right: 0.75rem;
        }
/* 导航高亮当前页 (关于) */
        .navbar-cyber .nav-link-custom[href="/about.html"] {
            font-weight: 700;
            text-decoration: underline;
            text-underline-offset: 6px;
            text-decoration-color: var(--accent);
        }
/* 保证卡片类无白底 */
        .about-section, .feature-mini {
            background-color: var(--bg);
            color: var(--text);
        }
/* 如果使用了任何bootstrap组件，强制覆盖 */
        .card, .card-body, .card-title, .card-text {
            background: var(--bg) !important;
            color: var(--text) !important;
            border-color: var(--main) !important;
        }

/* --- 子页面追加 --- */
/* 排行榜专属组件 — 全部使用 CSS 变量，与首页视觉一致 */
        .rank-hero {
            background: linear-gradient(135deg, var(--accent) 0%, var(--main) 100%);
            border: 3px solid var(--text);
            box-shadow: var(--hard-shadow);
            padding: 2.5rem 2rem;
            border-radius: 0px;
            margin-bottom: 3rem;
        }
.rank-hero h1 {
            font-weight: 900;
            color: var(--bg);
            text-shadow: 4px 4px 0 var(--text);
            letter-spacing: -0.02em;
        }
.rank-hero p {
            color: var(--bg);
            font-weight: 500;
            font-size: 1.1rem;
        }
.rank-card {
            background: var(--bg);
            border: 3px solid var(--text);
            box-shadow: var(--soft-shadow);
            padding: 1.2rem 1.5rem;
            margin-bottom: 1.5rem;
            transition: transform 0.1s ease, box-shadow 0.1s ease;
            display: flex;
            align-items: center;
            gap: 1rem;
        }
.rank-card:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0 var(--text);
        }
.rank-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--main);
            width: 3.5rem;
            text-align: center;
            line-height: 1;
            text-shadow: 2px 2px 0 rgba(69, 26, 3, 0.15);
            font-family: 'Inter', sans-serif;
        }
.rank-info {
            flex: 1;
        }
.rank-title {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 0.2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
        }
.rank-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--bg);
            font-weight: 700;
            font-size: 0.7rem;
            padding: 0.2rem 0.6rem;
            letter-spacing: 0.3px;
            border: 2px solid var(--text);
            box-shadow: 2px 2px 0 var(--text);
            text-transform: uppercase;
        }
.rank-trend {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--main);
            background: rgba(202, 138, 4, 0.12);
            padding: 0.15rem 0.5rem;
            border-left: 4px solid var(--main);
        }
.rank-stats {
            display: flex;
            gap: 1.2rem;
            color: var(--text);
            font-size: 0.9rem;
            font-weight: 500;
            opacity: 0.8;
        }
.rank-stats i {
            color: var(--main);
            margin-right: 0.2rem;
        }
.rank-card .fa-arrow-trend-up { color: var(--main); margin-left: 0.3rem; }
.rank-card .fa-arrow-trend-down { color: #9a3412; margin-left: 0.3rem; }
.section-title-cyber {
            font-weight: 900;
            color: var(--text);
            border-left: 8px solid var(--main);
            padding-left: 1rem;
            margin: 2.5rem 0 1.5rem 0;
            text-transform: uppercase;
            letter-spacing: -0.02em;
        }
.section-title-cyber span {
            background: var(--accent);
            color: var(--bg);
            padding: 0.1rem 0.6rem;
            box-shadow: 3px 3px 0 var(--text);
            margin-left: 0.5rem;
            font-size: 0.8rem;
            font-weight: 800;
            vertical-align: middle;
        }
.table-cyber {
            background: var(--bg);
            border: 3px solid var(--text);
            box-shadow: var(--soft-shadow);
        }
.table-cyber th {
            background: var(--main);
            color: var(--bg);
            font-weight: 700;
            border-bottom: 3px solid var(--text);
            padding: 0.8rem;
        }
.table-cyber td {
            padding: 0.8rem;
            border-bottom: 1px dashed rgba(69, 26, 3, 0.25);
            color: var(--text);
            background: transparent;
        }
.table-cyber .td-highlight {
            font-weight: 800;
            color: var(--main);
        }
.table-cyber .badge-hot {
            background: var(--accent);
            color: var(--bg);
            font-size: 0.7rem;
            padding: 0.2rem 0.6rem;
            font-weight: 700;
        }
.genre-tag {
            background: transparent;
            border: 2px solid var(--main);
            color: var(--main);
            font-weight: 700;
            padding: 0.2rem 0.9rem;
            font-size: 0.8rem;
            transition: 0.15s;
            box-shadow: 2px 2px 0 var(--text);
            display: inline-block;
            margin-right: 0.5rem;
            margin-bottom: 0.4rem;
        }
.genre-tag:hover {
            background: var(--main);
            color: var(--bg);
        }
.text-muted-cyber { color: var(--text); opacity: 0.7; }
/* 复用首页的 .lead 等类名 */
        .lead { color: var(--text); font-weight: 500; }
/* 覆盖 Bootstrap 卡片/表格等 (保险起见) */
        .card, .card-body { background: var(--bg); color: var(--text); border-color: var(--text); }
.list-group-item { background: var(--bg); color: var(--text); border-color: var(--text); }
.accordion-button { background: var(--bg); color: var(--text); }
.accordion-button:not(.collapsed) { background: var(--accent); color: var(--bg); }
.form-control { background: var(--bg); color: var(--text); border-color: var(--text); }
.form-control:focus { background: var(--bg); color: var(--text); }
.nav-link { color: var(--text); }
.nav-link:hover { color: var(--main); }

/* --- 子页面追加 --- */
.privacy-section { margin-bottom: 2.5rem; }
.privacy-title { font-weight: 800; color: var(--text); margin-bottom: 1.2rem; padding-bottom: .5rem; border-bottom: 3px solid var(--main); display: inline-block; }
.privacy-content { line-height: 1.8; color: var(--text); opacity: .9; }
.privacy-list { padding-left: 1.5rem; }
.privacy-list li { margin-bottom: .8rem; position: relative; }
.privacy-list li::before { content: "\f058"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: -1.5rem; color: var(--main); font-size: .9rem; }
.privacy-badge { background: var(--main); color: #fff; padding: .2rem .8rem; border-radius: 4px; font-size: .85rem; font-weight: 600; margin-right: .5rem; }
.privacy-note { background: rgba(180, 83, 9, 0.08); border-left: 4px solid var(--main); padding: 1rem 1.2rem; border-radius: 0 8px 8px 0; margin: 1.5rem 0; }
.privacy-note p { margin: 0; font-size: .95rem; }
.privacy-updated { font-size: .9rem; color: var(--accent); font-weight: 600; margin-bottom: 2rem; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#451a03 !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#451a03 !important; }