:root {
            --primary: #2563eb;
            --accent: #06b6d4;
            --bg-light: #f4f8ff;
            --text-dark: #0f1e3d;
            --radius-lg: 24px;
            --radius-md: 18px;
            --shadow-soft: 0 10px 25px -5px rgba(37, 99, 235, 0.08), 0 8px 16px -8px rgba(0,0,0,0.08);
            --shadow-hover: 0 24px 40px -12px rgba(37, 99, 235, 0.25), 0 12px 20px -12px rgba(0,0,0,0.2);
        }
        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, .display-font {
            font-weight: 900;
            letter-spacing: -0.02em;
        }
        .hero-parallax {
            background-image: url('https://images.unsplash.com/photo-1489599849927-2ee91cede3ba?q=80&w=1740&auto=format&fit=crop'); /* 背景图占位 */
            background-size: cover;
            background-position: center 40%;
            background-attachment: fixed;
            position: relative;
        }
        .hero-parallax::before {
            content: "";
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(244, 248, 255, 0.96) 0%, rgba(255,255,255,0.7) 100%);
            backdrop-filter: blur(4px);
        }
        .hero-content {
            position: relative;
            padding: 5rem 1rem;
            text-align: center;
        }
        .hero-title {
            background: linear-gradient(120deg, var(--primary) 20%, var(--accent) 90%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-size: calc(2.2rem + 1.8vw);
            font-weight: 900;
            display: inline-block;
            letter-spacing: -0.02em;
            animation: float 6s ease-in-out infinite;
        }
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-8px); }
            100% { transform: translateY(0px); }
        }
        .hero-float-icons i {
            font-size: 2rem;
            color: var(--primary);
            opacity: 0.6;
            margin: 0 0.8rem;
            display: inline-block;
            animation: float 4s ease-in-out infinite;
        }
        .hero-float-icons i:nth-child(2) { animation-delay: 0.7s; color: var(--accent); }
        .hero-float-icons i:nth-child(3) { animation-delay: 1.2s; color: #f59e0b; }

        /* 导航 */
        .navbar-custom {
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(10px);
            border-radius: 60px;
            padding: 0.6rem 1.2rem;
            box-shadow: var(--shadow-soft);
            margin-top: 1rem;
        }
        .navbar-brand {
            font-weight: 900;
            color: var(--primary);
            font-size: 1.7rem;
            letter-spacing: -0.03em;
        }
        .navbar-brand i {
            color: var(--accent);
            margin-right: 6px;
        }
        .nav-link {
            color: var(--text-dark);
            font-weight: 600;
            margin: 0 0.3rem;
            border-radius: 30px;
            padding: 0.5rem 1rem;
            transition: all 0.2s;
        }
        .nav-link:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.02);
        }

        /* 卡片墙 */
        .movie-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(255,255,255,0.7);
            transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
            height: 100%;
            display: flex;
            flex-direction: column;
            cursor: pointer;
            position: relative;
        }
        .movie-card:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .movie-poster {
            position: relative;
            overflow: hidden;
            aspect-ratio: 2/3;
            background: #e9effa;
        }
        .movie-poster img {
            width: 100%; height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .movie-card:hover .movie-poster img {
            transform: scale(1.05);
        }
        .quality-badge {
            position: absolute;
            top: 10px; left: 10px;
            background: rgba(0,0,0,0.7);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
            letter-spacing: 0.5px;
        }
        .rating-badge {
            position: absolute;
            bottom: 10px; right: 10px;
            background: rgba(15, 30, 61, 0.8);
            backdrop-filter: blur(5px);
            color: #fbbf24;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 30px;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .card-body {
            padding: 0.9rem 0.8rem 1rem;
        }
        .card-title {
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 0.3rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .card-meta {
            font-size: 0.8rem;
            color: #5f6b8a;
            font-weight: 500;
        }
        .genre-chip {
            background: #eef4ff;
            border-radius: 30px;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* 板块标题 */
        .section-title {
            font-weight: 900;
            font-size: 2.2rem;
            color: var(--text-dark);
            margin-bottom: 1.5rem;
            position: relative;
        }
        .section-title i {
            color: var(--primary);
            margin-right: 10px;
        }

        /* 时间线 */
        .timeline {
            border-left: 4px solid var(--accent);
            padding-left: 2rem;
            margin: 1.5rem 0;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 2rem;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -2.7rem;
            top: 0.5rem;
            width: 16px; height: 16px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--accent);
        }

        /* 标签页 */
        .nav-tabs-custom .nav-link {
            background: transparent;
            border: none;
            font-weight: 700;
            color: var(--text-dark);
            border-radius: 40px;
            padding: 0.6rem 1.5rem;
        }
        .nav-tabs-custom .nav-link.active {
            background: var(--primary);
            color: white;
            box-shadow: 0 10px 20px -8px var(--primary);
        }

        /* 回顶部 */
        #backToTop {
            position: fixed;
            bottom: 30px; right: 30px;
            width: 50px; height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            border: none;
            font-size: 1.3rem;
            box-shadow: 0 10px 25px rgba(37,99,235,0.3);
            opacity: 0;
            visibility: hidden;
            transition: 0.3s;
            z-index: 999;
        }
        #backToTop.show {
            opacity: 1;
            visibility: visible;
        }

        /* 弹窗 */
        .modal-movie {
            display: none;
            position: fixed;
            top:0; left:0; width:100%; height:100%;
            background: rgba(0,0,0,0.8);
            backdrop-filter: blur(12px);
            z-index: 1050;
            justify-content: center;
            align-items: center;
            padding: 1.5rem;
        }
        .modal-content-movie {
            background: white;
            border-radius: 30px;
            max-width: 600px;
            width: 100%;
            padding: 2rem;
            box-shadow: 0 30px 60px rgba(0,0,0,0.3);
            position: relative;
        }
        .modal-close {
            position: absolute;
            top: 15px; right: 20px;
            font-size: 2rem;
            cursor: pointer;
            color: #aaa;
            transition: 0.2s;
        }
        .modal-close:hover { color: var(--primary); }
        .modal-bg-poster {
            position: absolute; inset: 0;
            background-size: cover;
            background-position: center;
            filter: blur(40px);
            opacity: 0.3;
            z-index: -1;
        }

        /* 随机推荐按钮 */
        .random-btn {
            background: linear-gradient(90deg, var(--primary), var(--accent));
            color: white;
            border: none;
            padding: 0.9rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: 0 8px 20px rgba(6,182,212,0.3);
            transition: all 0.3s;
        }
        .random-btn:hover { transform: scale(1.05); box-shadow: 0 14px 30px rgba(37,99,235,0.3); }

        footer {
            background: #ffffff;
            border-radius: 40px 40px 0 0;
            margin-top: 3rem;
            padding: 2rem 0 1.5rem;
            box-shadow: 0 -10px 30px rgba(0,0,0,0.02);
        }
        .friend-links {
            background: white;
            border-radius: 40px;
            padding: 1.5rem;
            margin: 2rem 0;
            box-shadow: var(--shadow-soft);
        }
        .data-font {
            font-family: 'SF Mono', 'Menlo', monospace;
            font-weight: 600;
        }

/* --- 子页面追加 --- */
/* 关于页专属补充样式 */
        .about-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            padding: 80px 0 60px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
.about-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
        }
.about-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }
.about-hero h1 {
            font-weight: 800;
            font-size: 2.5rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
.about-hero p {
            font-size: 1.1rem;
            opacity: 0.95;
            max-width: 700px;
            position: relative;
            z-index: 1;
        }
.about-section {
            padding: 70px 0;
        }
.about-section:nth-child(even) {
            background: var(--bg-light);
        }
.about-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-soft);
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid rgba(37, 99, 235, 0.08);
        }
.about-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
.about-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 20px;
        }
.about-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 14px;
        }
.about-card p {
            color: #4a5568;
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
.timeline-about {
            position: relative;
            padding-left: 32px;
        }
.timeline-about::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
.timeline-about .timeline-item {
            position: relative;
            padding-bottom: 28px;
            padding-left: 16px;
        }
.timeline-about .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 12px;
            height: 12px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--primary);
        }
.timeline-about .timeline-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
.timeline-about .timeline-item p {
            color: #4a5568;
            font-size: 0.92rem;
            line-height: 1.6;
        }
.stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
.stat-label {
            color: #718096;
            font-size: 0.9rem;
            margin-top: 4px;
        }
.mission-quote {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(6, 182, 212, 0.05));
            border-left: 4px solid var(--primary);
            padding: 24px 28px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 32px 0;
            font-style: italic;
            color: #2d3748;
            font-size: 1.05rem;
        }