:root {
        --mk-primary: #eab308;
        --mk-accent: #f59e0b;
        --mk-bg: #18181b;
        --mk-text: #fafafa;
        --mk-card-bg: #26262a;
        --mk-border-glow: rgba(234, 179, 8, 0.15);
    }

    * {
        box-sizing: border-box;
        scrollbar-width: thin;
        scrollbar-color: var(--mk-primary) #3f3f46;
    }

    body {
        background-color: var(--mk-bg);
        color: var(--mk-text);
        font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        line-height: 1.65;
        letter-spacing: 0.2px;
        overflow-x: hidden;
        position: relative;
    }

    /* 点阵背景装饰 */
    body::before {
        content: "";
        position: fixed;
        inset: 0;
        background-image: radial-gradient(circle at 1.5px 1.5px, rgba(255, 255, 255, 0.04) 1.5px, transparent 0);
        background-size: 32px 32px;
        pointer-events: none;
        z-index: 0;
    }

    body > * {
        position: relative;
        z-index: 1;
    }

    /* 胶囊圆角 & 卡片 */
    .mk-card {
        background: var(--mk-card-bg);
        border-radius: 2rem !important;
        border: 1px solid rgba(255, 255, 255, 0.04);
        box-shadow: 0 12px 24px -12px rgba(0, 0, 0, 0.7);
        transition: transform .2s ease, border-color .2s ease, box-shadow .2s;
        height: 100%;
        backdrop-filter: blur(4px);
    }

    .mk-card:hover {
        border-color: rgba(234, 179, 8, 0.4);
        box-shadow: 0 18px 36px -18px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(234, 179, 8, 0.2);
        transform: translateY(-4px);
    }

    .mk-btn-round {
        border-radius: 60px;
        padding: 0.55rem 1.4rem;
        font-weight: 600;
    }

    .btn-warning {
        background: var(--mk-primary);
        border: none;
        color: #18181b;
    }

    .btn-warning:hover {
        background: #facc15;
        color: #18181b;
    }

    .btn-outline-light {
        border-radius: 60px;
        border-color: rgba(255, 255, 255, 0.2);
    }

    .btn-outline-light:hover {
        background: rgba(234, 179, 8, 0.1);
        border-color: var(--mk-primary);
        color: var(--mk-primary);
    }

    /* 导航栏定制 */
    .navbar-mk {
        background: rgba(24, 24, 27, 0.8);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(234, 179, 8, 0.15);
    }

    .navbar-mk .navbar-brand {
        font-weight: 900;
        font-size: 1.8rem;
        color: var(--mk-text) !important;
        letter-spacing: 1px;
    }

    .navbar-mk .navbar-brand i {
        color: var(--mk-primary);
        margin-right: 8px;
    }

    .navbar-mk .nav-link {
        color: rgba(250, 250, 250, 0.8);
        font-weight: 500;
        padding-inline: 1rem;
        border-radius: 60px;
        transition: color .15s, background .15s;
    }

    .navbar-mk .nav-link:hover {
        color: var(--mk-primary);
        background: rgba(234, 179, 8, 0.08);
    }

    /* Hero */
    .mk-hero {
        background:
            radial-gradient(circle at 30% 30%, rgba(234, 179, 8, 0.1), transparent 55%),
            linear-gradient(150deg, #1c1c1f 0%, #0f0f11 100%);
        background-image: url("{随机图片}"); /* 占位符: 主视觉压暗 */
        background-size: cover;
        background-position: center 30%;
        position: relative;
        isolation: isolate;
    }

    .mk-hero::after {
        content: "";
        position: absolute;
        inset: 0;
        background: rgba(24, 24, 27, 0.72);
        z-index: -1;
        box-shadow: inset 0 -40px 50px -20px rgba(0, 0, 0, 0.8);
    }

    .mk-hero .container {
        padding-top: 6rem;
        padding-bottom: 6rem;
    }

    .mk-hero h1 {
        font-weight: 900;
        font-size: clamp(2.6rem, 9vw, 5.2rem);
        letter-spacing: -0.01em;
        text-shadow: 0 8px 18px rgba(0,0,0,0.6);
    }

    .mk-hero .lead {
        font-size: 1.4rem;
        font-weight: 400;
        color: rgba(250, 250, 250, 0.9);
        text-shadow: 0 2px 8px #000;
        max-width: 700px;
    }

    /* 进度条 */
    .mk-scroll-progress {
        position: fixed;
        top: 0;
        left: 0;
        height: 4px;
        width: 0%;
        background: linear-gradient(90deg, var(--mk-primary), var(--mk-accent));
        z-index: 9999;
        border-radius: 0 10px 10px 0;
        box-shadow: 0 0 12px rgba(234, 179, 8, 0.4);
    }

    /* 回到顶部 */
    .mk-to-top {
        position: fixed;
        right: 24px;
        bottom: 24px;
        width: 48px;
        height: 48px;
        border-radius: 60px;
        background: var(--mk-primary);
        border: none;
        color: #18181b;
        font-size: 1.4rem;
        opacity: 0;
        pointer-events: none;
        transition: opacity .25s, transform .25s;
        box-shadow: 0 8px 18px rgba(0,0,0,0.3);
        z-index: 999;
        display: grid;
        place-items: center;
        transform: translateY(12px);
    }

    .mk-to-top.show {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .mk-to-top:hover {
        background: #facc15;
    }

    /* 区块标题 */
    .mk-section-title {
        font-weight: 800;
        letter-spacing: -0.02em;
        border-left: 6px solid var(--mk-primary);
        padding-left: 1.2rem;
        font-size: 2rem;
    }

    .mk-eyebrow {
        color: var(--mk-primary);
        font-weight: 700;
        letter-spacing: 0.5px;
        text-transform: uppercase;
        font-size: 0.9rem;
    }

    /* 步骤条 */
    .mk-steps .step-item {
        position: relative;
        padding-left: 2.8rem;
        margin-bottom: 2rem;
    }

    .mk-steps .step-number {
        position: absolute;
        left: 0;
        top: 0;
        width: 40px;
        height: 40px;
        border-radius: 50px;
        background: var(--mk-primary);
        color: #18181b;
        font-weight: 800;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        box-shadow: 0 6px 12px rgba(234, 179, 8, 0.2);
    }

    .mk-steps .step-title {
        font-weight: 700;
        font-size: 1.25rem;
        margin-bottom: 0.3rem;
    }

    /* 特色卡片海报hover播放按钮 */
    .mk-card-poster {
        position: relative;
        overflow: hidden;
        border-radius: 1.8rem;
        aspect-ratio: 3/4;
        background: #1e1e21;
    }

    .mk-card-poster img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease, filter 0.3s;
    }

    .mk-card-poster::after {
        content: "\f144";
        font-family: "Font Awesome 6 Free";
        font-weight: 400;
        font-size: 3.2rem;
        color: white;
        position: absolute;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(0,0,0,0.3);
        opacity: 0;
        transition: opacity .3s;
        text-shadow: 0 6px 12px black;
    }

    .mk-card-poster:hover::after {
        opacity: 1;
    }

    .mk-card-poster:hover img {
        transform: scale(1.06);
        filter: brightness(0.8);
    }

    /* CTA */
    .mk-cta {
        background: linear-gradient(145deg, rgba(234,179,8,0.18), rgba(24,24,27,1) 70%);
        border: 1px solid rgba(234,179,8,0.25);
        border-radius: 3rem;
    }

    .mk-footer {
        border-top: 1px solid rgba(255,255,255,0.05);
        color: #b6b6bc;
    }

    .mk-footer a {
        color: #d6d6dc;
        text-decoration: none;
    }

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

    .friend-links {
        background: #1b1b1e;
        border-radius: 60px;
        padding: 1rem 2rem;
    }

    .friend-links a {
        margin: 0 0.7rem;
        color: #c6c6cc;
    }

    .faq-section details {
        background: #202024;
        border-radius: 40px;
        padding: 1.2rem 1.6rem;
        margin-bottom: 1rem;
        border: 1px solid #34343a;
    }

    details summary {
        font-weight: 600;
        cursor: pointer;
        list-style: none;
        display: flex;
        align-items: center;
    }

    details summary::-webkit-details-marker { display: none; }
    details summary i { margin-right: 0.6rem; color: var(--mk-primary); }
    details[open] summary i { transform: rotate(45deg); transition: .2s; }

    /* 字体标题圆体感 */
    .mk-rounded-font {
        font-family: 'Inter', sans-serif;
        font-weight: 800;
        letter-spacing: -0.02em;
    }

    /* 关键数据 */
    .mk-big-number {
        font-size: 2.4rem;
        font-weight: 900;
        color: var(--mk-primary);
        line-height: 1.2;
    }

    .text-small-caption {
        color: #a1a1aa;
        font-size: 0.9rem;
    }

    @media (max-width: 992px) {
        .navbar-collapse {
            background: rgba(24,24,27,0.95);
            border-radius: 2rem;
            padding: 1rem;
            margin-top: 0.5rem;
        }
    }

/* --- 子页面追加 --- */
/* 关于页专属的小范围补充样式(仅本页使用) */
        .about-hero {
            background: linear-gradient(135deg, rgba(234, 179, 8, 0.08) 0%, rgba(24, 24, 27, 0.9) 60%), var(--mk-bg);
            padding: 6rem 0 4rem;
            border-bottom: 1px solid rgba(234, 179, 8, 0.15);
        }
.about-section {
            padding: 4rem 0;
            border-bottom: 1px solid rgba(234, 179, 8, 0.08);
        }
.about-section:last-of-type {
            border-bottom: none;
        }
.about-intro-card {
            background: var(--mk-card-bg);
            border: 1px solid rgba(234, 179, 8, 0.12);
            border-radius: 1.25rem;
            padding: 2rem;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
.about-intro-card:hover {
            transform: translateY(-6px);
            border-color: rgba(234, 179, 8, 0.4);
        }
.about-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(234, 179, 8, 0.12);
            border: 1px solid rgba(234, 179, 8, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--mk-primary);
            margin-bottom: 1.25rem;
        }
.about-timeline {
            position: relative;
            padding-left: 2rem;
            border-left: 2px solid rgba(234, 179, 8, 0.25);
        }
.about-timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
.about-timeline-item::before {
            content: '';
            position: absolute;
            left: -2.4rem;
            top: 0.3rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--mk-primary);
            box-shadow: 0 0 0 4px rgba(234, 179, 8, 0.2);
        }
.about-timeline-year {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--mk-primary);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 0.4rem;
        }
.about-stats-badge {
            background: rgba(234, 179, 8, 0.08);
            border: 1px solid rgba(234, 179, 8, 0.2);
            border-radius: 50%;
            width: 72px;
            height: 72px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
        }
.about-stats-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--mk-primary);
            line-height: 1;
        }
.about-stats-label {
            font-size: 0.7rem;
            color: var(--mk-text);
            opacity: 0.7;
            margin-top: 0.2rem;
        }
.about-quote {
            border-left: 4px solid var(--mk-primary);
            background: rgba(234, 179, 8, 0.06);
            padding: 1.25rem 1.5rem;
            border-radius: 0 1rem 1rem 0;
            font-style: italic;
            color: rgba(250, 250, 250, 0.85);
            margin: 2rem 0;
        }
.about-highlight-word {
            color: var(--mk-primary);
            font-weight: 600;
        }
.about-divider {
            width: 64px;
            height: 3px;
            background: linear-gradient(90deg, var(--mk-primary), var(--mk-accent));
            border-radius: 4px;
            margin: 1.25rem 0 1.75rem;
        }
.about-img-placeholder {
            background: linear-gradient(145deg, rgba(234, 179, 8, 0.15), rgba(245, 158, 11, 0.05));
            border-radius: 1.25rem;
            padding: 3rem 2rem;
            text-align: center;
            border: 1px solid rgba(234, 179, 8, 0.15);
        }

/* --- 子页面追加 --- */
/* 榜单页专属样式 */
        .rank-hero {
            background: linear-gradient(135deg, rgba(234,179,8,0.08) 0%, rgba(24,24,27,0.9) 60%), var(--mk-bg);
            padding: 80px 0 40px;
            border-bottom: 1px solid var(--mk-border-glow);
        }
.rank-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 30px;
            border-bottom: 2px solid var(--mk-border-glow);
            padding-bottom: 20px;
        }
.rank-tab {
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all .3s;
            background: transparent;
            color: var(--mk-text);
            border: 1px solid var(--mk-border-glow);
        }
.rank-tab:hover, .rank-tab.active {
            background: var(--mk-primary);
            color: #18181b;
            border-color: var(--mk-primary);
        }
.rank-item {
            display: flex;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            gap: 20px;
            transition: all .3s;
        }
.rank-item:hover {
            background: rgba(234,179,8,0.04);
            padding-left: 10px;
        }
.rank-number {
            font-size: 28px;
            font-weight: 900;
            color: var(--mk-primary);
            min-width: 50px;
            text-align: center;
            font-family: 'Inter', sans-serif;
        }
.rank-number.out {
            color: rgba(255,255,255,0.3);
        }
.rank-cover {
            width: 70px;
            height: 95px;
            border-radius: 8px;
            object-fit: cover;
            border: 1px solid var(--mk-border-glow);
        }
.rank-info {
            flex: 1;
        }
.rank-title {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 4px;
            color: var(--mk-text);
        }
.rank-meta {
            font-size: 13px;
            color: rgba(255,255,255,0.6);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
.rank-meta i {
            color: var(--mk-primary);
            margin-right: 4px;
            font-size: 11px;
        }
.rank-stats {
            font-size: 14px;
            color: var(--mk-accent);
            font-weight: 600;
            white-space: nowrap;
        }
.rank-badge {
            background: rgba(234,179,8,0.15);
            color: var(--mk-primary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-left: 10px;
        }
.rank-up {
            color: #22c55e;
            font-size: 12px;
            font-weight: 600;
        }
.rank-down {
            color: #ef4444;
            font-size: 12px;
            font-weight: 600;
        }
.rank-stable {
            color: rgba(255,255,255,0.4);
            font-size: 12px;
            font-weight: 600;
        }
.rank-cover {
                width: 55px;
                height: 75px;
            }
.rank-number {
                font-size: 22px;
                min-width: 35px;
            }
.rank-title {
                font-size: 14px;
            }
.rank-meta {
                font-size: 12px;
            }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 白底组件 —— 本页只用栅格，但以防万一 */
        .card, .card-body, .card-header, .card-footer {
            background: var(--mk-card-bg);
            color: var(--mk-text);
            border-color: var(--mk-border-glow);
        }
.form-control, .form-select {
            background: rgba(0,0,0,0.35);
            color: var(--mk-text);
            border-color: var(--mk-border-glow);
        }
.form-control::placeholder { color: rgba(250,250,250,0.45); }
/* 漫游卡片 hover 效果 */
        .roam-card {
            background: var(--mk-card-bg);
            border: 1px solid var(--mk-border-glow);
            border-radius: 1.5rem;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
.roam-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -8px rgba(234, 179, 8, 0.25);
        }
.roam-tag {
            background: rgba(234, 179, 8, 0.15);
            color: var(--mk-primary);
            font-weight: 600;
            font-size: 0.75rem;
            padding: 0.3rem 0.9rem;
            border-radius: 2rem;
            letter-spacing: 0.02em;
        }
.roam-quote {
            border-left: 4px solid var(--mk-accent);
            background: rgba(234, 179, 8, 0.06);
            padding: 1rem 1.5rem;
            border-radius: 0 1rem 1rem 0;
            font-style: italic;
        }
.divider-dot {
            width: 5px;
            height: 5px;
            background: var(--mk-accent);
            border-radius: 50%;
            display: inline-block;
            margin: 0 0.5rem;
            opacity: 0.6;
        }

/* --- 子页面追加 --- */
/* 隐私页专属补充样式 */
        .privacy-hero {
            background: linear-gradient(135deg, var(--mk-bg) 0%, #1c1c1f 50%, var(--mk-card-bg) 100%);
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
.privacy-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 80% 20%, var(--mk-border-glow), transparent 50%);
            pointer-events: none;
        }
.privacy-section {
            padding: 3rem 0;
        }
.privacy-card {
            background: var(--mk-card-bg);
            border: 1px solid rgba(234, 179, 8, 0.1);
            border-radius: 1.25rem;
            padding: 2.5rem;
            margin-bottom: 2rem;
            transition: border-color 0.3s ease, transform 0.3s ease;
        }
.privacy-card:hover {
            border-color: rgba(234, 179, 8, 0.3);
            transform: translateY(-2px);
        }
.privacy-icon {
            font-size: 2rem;
            color: var(--mk-primary);
            margin-bottom: 1rem;
            display: inline-block;
        }
.privacy-subtitle {
            color: var(--mk-accent);
            font-weight: 600;
            font-size: 0.875rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 0.75rem;
        }
.privacy-list {
            list-style: none;
            padding: 0;
            margin: 1rem 0 0;
        }
.privacy-list li {
            padding: 0.5rem 0;
            padding-left: 1.75rem;
            position: relative;
            color: rgba(250, 250, 250, 0.85);
        }
.privacy-list li::before {
            content: '✦';
            position: absolute;
            left: 0;
            color: var(--mk-primary);
            font-size: 0.85rem;
        }
.privacy-important {
            background: rgba(234, 179, 8, 0.08);
            border-left: 4px solid var(--mk-primary);
            padding: 1.5rem 2rem;
            border-radius: 0 1rem 1rem 0;
            margin: 2rem 0;
        }
.privacy-important p {
            margin: 0;
            color: rgba(250, 250, 250, 0.9);
            line-height: 1.8;
        }
.privacy-timeline {
            position: relative;
            padding-left: 2rem;
        }
.privacy-timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--mk-primary), var(--mk-accent));
            border-radius: 2px;
        }
.privacy-timeline-item {
            position: relative;
            padding: 1rem 0 1rem 1.5rem;
        }
.privacy-timeline-item::before {
            content: '';
            position: absolute;
            left: -2.1rem;
            top: 1.6rem;
            width: 12px;
            height: 12px;
            background: var(--mk-primary);
            border-radius: 50%;
            border: 3px solid var(--mk-bg);
            box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.2);
        }
.privacy-timeline-item h4 {
            color: var(--mk-text);
            font-weight: 600;
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }
.privacy-timeline-item p {
            color: rgba(250, 250, 250, 0.75);
            line-height: 1.7;
            margin: 0;
        }
.badge-privacy {
            display: inline-block;
            background: rgba(234, 179, 8, 0.1);
            border: 1px solid rgba(234, 179, 8, 0.2);
            color: var(--mk-primary);
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
.privacy-updated {
            font-size: 0.85rem;
            color: rgba(250, 250, 250, 0.5);
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(234, 179, 8, 0.1);
        }