/* ================================================================
   星辰影视 - 全局样式表 (优化版)
   模块: 基础 → 布局 → 组件 → 页面 → 工具 → 响应式 → 暗色 → 打印
   ================================================================ */

/* ================================================================
   1. CSS 自定义属性 (Design Tokens)
   ================================================================ */
:root {
    /* --- 主色调 --- */
    --color-primary: #3532a7;
    --color-primary-hover: #3f3cb5;
    --color-primary-light: #646ecb;
    --color-primary-lighter: #8b93e0;
    --color-accent: #b793e6;
    --color-accent-hover: #c9a4f2;
    --color-accent-light: #dcc8f4;

    /* --- 语义色 --- */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* --- 中性色阶 --- */
    --gray-50: #f8f7fa;
    --gray-100: #f0edf7;
    --gray-200: #eae7ed;
    --gray-300: #e0dce8;
    --gray-400: #c4bfd4;
    --gray-500: #9a93b0;
    --gray-600: #5a5a72;
    --gray-700: #3d3d55;
    --gray-800: #2d2d3f;
    --gray-900: #1a1a2e;

    /* --- 语义别名 --- */
    --color-bg: var(--gray-50);
    --color-bg-light: var(--gray-200);
    --color-white: #ffffff;
    --color-dark: var(--gray-900);
    --color-text: var(--gray-800);
    --color-text-light: var(--gray-600);
    --color-text-muted: var(--gray-500);
    --color-border: var(--gray-300);
    --color-border-light: #eae8f2;
    --color-tag: var(--gray-100);
    --color-tag-hover: #e6e1f5;

    /* --- 阴影 --- */
    --shadow-xs: 0 1px 3px rgba(53, 50, 167, 0.04);
    --shadow-sm: 0 2px 8px rgba(53, 50, 167, 0.06);
    --shadow-md: 0 4px 20px rgba(53, 50, 167, 0.10);
    --shadow-lg: 0 8px 40px rgba(53, 50, 167, 0.14);
    --shadow-xl: 0 12px 60px rgba(53, 50, 167, 0.18);
    --shadow-card: 0 2px 16px rgba(53, 50, 167, 0.07);
    --shadow-card-hover: 0 6px 28px rgba(53, 50, 167, 0.14);

    /* --- 圆角 --- */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    /* --- 间距 --- */
    --space-2xs: 4px;
    --space-xs: 6px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 20px;
    --space-2xl: 24px;
    --space-3xl: 32px;
    --space-4xl: 40px;

    /* --- 排版 --- */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
        'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --line-height-tight: 1.2;
    --line-height-snug: 1.4;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;

    /* --- 流体字号 --- */
    --font-xs: clamp(0.7rem, 1.2vw, 0.78rem);
    --font-sm: clamp(0.8rem, 1.4vw, 0.88rem);
    --font-base: clamp(0.9rem, 1.6vw, 1rem);
    --font-md: clamp(1rem, 1.8vw, 1.12rem);
    --font-lg: clamp(1.15rem, 2.2vw, 1.35rem);
    --font-xl: clamp(1.4rem, 2.8vw, 1.75rem);
    --font-2xl: clamp(1.7rem, 3.5vw, 2.2rem);
    --font-3xl: clamp(2rem, 4.5vw, 2.8rem);

    /* --- 布局 --- */
    --max-width: 1320px;
    --nav-height: 62px;
    --content-gap: 24px;
    --sidebar-width: 340px;

    /* --- 过渡 --- */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================================================
   2. 重置与基础样式
   ================================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: var(--line-height-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ================================================================
   3. 跳过导航 (Accessibility)
   ================================================================ */
.skip-to-content {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 9999;
    background: var(--color-primary);
    color: #fff;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-sm);
    transition: top var(--transition-fast);
}
.skip-to-content:focus {
    top: 8px;
}

/* ================================================================
   4. 导航栏
   ================================================================ */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-xs);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    padding: 0 clamp(12px, 3vw, var(--space-4xl));
    gap: var(--space-lg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    transition: box-shadow var(--transition);
}
/* 导航栏滚动阴影 (通过 JS 添加 .nav-scrolled 类) */
.top-nav.nav-scrolled {
    box-shadow: var(--shadow-md);
}

.nav-brand {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-primary);
    transition: opacity var(--transition-fast);
}
.nav-brand:hover {
    opacity: 0.85;
}
.nav-brand h1 {
    font-size: var(--font-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
}

.logo-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: var(--font-weight-bold);
    font-size: 1.1rem;
    box-shadow: 0 2px 8px rgba(53, 50, 167, 0.3);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    mask-image: linear-gradient(to right, #000 92%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, #000 92%, transparent 100%);
    padding: var(--space-2xs) 0;
}
.nav-links::-webkit-scrollbar {
    display: none;
}
.nav-links a {
    flex-shrink: 0;
    text-decoration: none;
    color: var(--color-text-light);
    font-size: var(--font-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--space-sm) 14px;
    border-radius: var(--radius-full);
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
}
.nav-links a:hover {
    color: var(--color-primary);
    background: var(--color-tag);
}
.nav-links a.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    background: #e0daf5;
}
.nav-links a:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: -2px;
}

.nav-user {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 14px;
    border-radius: 22px;
    background: var(--color-tag);
    border: 1.5px solid transparent;
    font-size: var(--font-sm);
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition);
}
.nav-user:hover {
    border-color: var(--color-primary-light);
    background: #f0eef8;
}
.nav-user:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}
.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: var(--font-weight-semibold);
    font-size: 0.75rem;
}

/* ================================================================
   5. 移动端菜单
   ================================================================ */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    cursor: pointer;
    z-index: 1001;
}
.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}
#mobile-menu-toggle {
    display: none;
}
/* 移动端菜单展开时，汉堡图标变叉号 */
#mobile-menu-toggle:checked ~ .top-nav .mobile-menu-btn span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
#mobile-menu-toggle:checked ~ .top-nav .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
}
#mobile-menu-toggle:checked ~ .top-nav .mobile-menu-btn span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ================================================================
   6. Banner 横幅
   ================================================================ */
.brand-banner {
    width: 100%;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #1a1a3a 0%, #2d2080 40%, #1a1a3a 100%);
    min-height: clamp(280px, 40vw, 440px);
    display: flex;
    align-items: center;
    justify-content: center;
}
.brand-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(183, 147, 230, 0.15) 0%, transparent 70%);
    z-index: 1;
    animation: bannerGlow 6s ease-in-out infinite;
}
@keyframes bannerGlow {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}
.banner-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.45;
    z-index: 0;
    transition: transform var(--transition-slow);
}
.brand-banner:hover .banner-bg-img {
    transform: scale(1.03);
}
.banner-overlay {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: clamp(20px, 5vw, 60px) clamp(16px, 4vw, var(--space-4xl));
    max-width: 800px;
}
.banner-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    color: #fff;
    padding: 6px 18px;
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(255, 255, 255, 0.25);
    letter-spacing: 0.04em;
}
.banner-title {
    font-size: var(--font-3xl);
    font-weight: var(--font-weight-extrabold);
    color: #fff;
    margin-bottom: var(--space-md);
    line-height: var(--line-height-tight);
    text-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.02em;
}
.banner-subtitle {
    font-size: var(--font-md);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-2xl);
    line-height: var(--line-height-relaxed);
}
.banner-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
}
.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 11px 26px;
    border-radius: 25px;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-sm);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}
.btn-cta:active {
    transform: scale(0.97);
}
.btn-cta:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}
.btn-cta-primary {
    background: var(--color-accent);
    color: #1a1a2e;
    box-shadow: 0 4px 18px rgba(183, 147, 230, 0.5);
    animation: ctaPulse 2.5s ease-in-out infinite;
}
@keyframes ctaPulse {
    0%, 100% { box-shadow: 0 4px 18px rgba(183, 147, 230, 0.5); }
    50% { box-shadow: 0 4px 28px rgba(183, 147, 230, 0.75); }
}
.btn-cta-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(183, 147, 230, 0.6);
}
.btn-cta-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}
.btn-cta-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ================================================================
   7. 主容器
   ================================================================ */
.main-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(12px, 3vw, var(--space-3xl));
}

/* ================================================================
   8. 板块标题
   ================================================================ */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-bg-light);
}
.section-header h2 {
    font-size: var(--font-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    padding-left: 14px;
    position: relative;
}
.section-header h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 22px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
    border-radius: 3px;
}
.more-link {
    font-size: var(--font-sm);
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
}
.more-link:hover {
    color: var(--color-primary);
    gap: var(--space-sm);
}
.more-link:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 4px;
    border-radius: var(--radius-xs);
}

/* ================================================================
   9. 平台介绍
   ================================================================ */
.platform-intro {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: clamp(20px, 3vw, var(--space-3xl)) clamp(16px, 3vw, 28px);
    margin: var(--space-2xl) 0;
    box-shadow: var(--shadow-card);
    text-align: center;
    border: 1px solid var(--color-border);
    animation: fadeInUp 0.5s ease-out;
}
.platform-intro p {
    font-size: var(--font-base);
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}
.intro-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    justify-content: center;
    margin-top: var(--space-lg);
}
.intro-highlight-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background: var(--color-tag);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    transition: var(--transition);
}
.intro-highlight-item:hover {
    background: var(--color-tag-hover);
    transform: translateY(-1px);
}
.highlight-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.7; }
}

/* ================================================================
   10. 内容区布局
   ================================================================ */
.content-layout {
    display: grid;
    grid-template-columns: 1fr var(--sidebar-width);
    gap: var(--content-gap);
    margin: var(--space-2xl) 0;
    align-items: start;
}
.content-main {
    min-width: 0;
}
.content-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 20px);
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

/* ================================================================
   11. 影视卡片
   ================================================================ */
.movie-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.movie-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out both;
}
.movie-card:nth-child(1) { animation-delay: 0.05s; }
.movie-card:nth-child(2) { animation-delay: 0.1s; }
.movie-card:nth-child(3) { animation-delay: 0.15s; }
.movie-card:nth-child(4) { animation-delay: 0.2s; }
.movie-card:nth-child(5) { animation-delay: 0.05s; }
.movie-card:nth-child(6) { animation-delay: 0.1s; }
.movie-card:nth-child(7) { animation-delay: 0.15s; }
.movie-card:nth-child(8) { animation-delay: 0.2s; }
.movie-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
}
.movie-card:focus-within {
    box-shadow: 0 0 0 3px var(--color-primary-lighter);
}
.card-img-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 2/3;
    overflow: hidden;
    background: linear-gradient(135deg, #e8e5f0, #d5d0e8);
}
.card-img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.15) 0%, transparent 40%);
    z-index: 1;
    opacity: 0;
    transition: opacity var(--transition);
}
.movie-card:hover .card-img-wrap::after {
    opacity: 1;
}
.card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.movie-card:hover .card-img-wrap img {
    transform: scale(1.08);
}
.card-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #fff;
    font-size: var(--font-xs);
    font-weight: var(--font-weight-bold);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    z-index: 2;
    box-shadow: 0 2px 8px rgba(53, 50, 167, 0.3);
    letter-spacing: 0.03em;
}
.card-rating {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    color: #ffc107;
    font-size: var(--font-xs);
    font-weight: var(--font-weight-bold);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 2px;
}
.card-rating::before {
    content: '⭐';
    font-size: 0.65rem;
}
.card-body {
    padding: 10px var(--space-md) 14px;
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
}
.card-title {
    font-size: var(--font-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    line-height: var(--line-height-snug);
}
.card-meta {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    line-height: var(--line-height-snug);
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
}
.card-meta span {
    display: inline-block;
    background: var(--color-tag);
    padding: 2px 7px;
    border-radius: var(--radius-xs);
    font-size: 0.68rem;
    white-space: nowrap;
}
.card-type-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background: #eae6f7;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    margin-top: 2px;
    align-self: flex-start;
    letter-spacing: 0.02em;
}

/* ================================================================
   12. 明星卡片
   ================================================================ */
.star-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.star-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out both;
}
.star-card:nth-child(1) { animation-delay: 0.05s; }
.star-card:nth-child(2) { animation-delay: 0.1s; }
.star-card:nth-child(3) { animation-delay: 0.15s; }
.star-card:nth-child(4) { animation-delay: 0.2s; }
.star-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
}
.star-card .card-img-wrap,
.star-card > img:first-child {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    position: relative;
}
.star-card > img:first-child + .star-name {
    /* img is direct child */
}
.star-card img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.star-card:hover img {
    transform: scale(1.05);
}
.star-name {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-sm);
    padding: var(--space-sm) var(--space-sm) 2px;
    color: var(--color-dark);
}
.star-role {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    padding: 0 var(--space-sm) var(--space-md);
    line-height: var(--line-height-snug);
}

/* ================================================================
   13. 剧情卡片
   ================================================================ */
.plot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.plot-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    gap: 14px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    align-items: flex-start;
    animation: fadeInUp 0.5s ease-out both;
}
.plot-card:nth-child(1) { animation-delay: 0.05s; }
.plot-card:nth-child(2) { animation-delay: 0.1s; }
.plot-card:nth-child(3) { animation-delay: 0.15s; }
.plot-card:nth-child(4) { animation-delay: 0.2s; }
.plot-card:nth-child(5) { animation-delay: 0.25s; }
.plot-card:nth-child(6) { animation-delay: 0.3s; }
.plot-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}
.plot-card img {
    width: 100px;
    height: 140px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: var(--shadow-xs);
}
.plot-info {
    flex: 1;
    min-width: 0;
}
.plot-info h4 {
    font-size: var(--font-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--space-2xs);
}
.plot-info p {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* ================================================================
   14. 详情卡片 (content.html)
   ================================================================ */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.detail-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    display: flex;
    gap: 14px;
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out both;
}
.detail-card:nth-child(1) { animation-delay: 0.05s; }
.detail-card:nth-child(2) { animation-delay: 0.1s; }
.detail-card:nth-child(3) { animation-delay: 0.15s; }
.detail-card:nth-child(4) { animation-delay: 0.2s; }
.detail-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
}
.detail-card img {
    width: 110px;
    height: 155px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: var(--shadow-xs);
}
.detail-info {
    flex: 1;
    min-width: 0;
}
.detail-info h4 {
    font-size: var(--font-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--space-2xs);
}
.detail-info .detail-meta {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}
.detail-info .detail-meta strong {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* ================================================================
   15. 数据统计
   ================================================================ */
.stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.stat-card {
    flex: 1;
    min-width: 140px;
    background: linear-gradient(135deg, var(--color-white) 0%, #faf9fd 100%);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition);
}
.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
}
.stat-card:hover::before {
    opacity: 1;
}
.stat-number {
    font-size: var(--font-2xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    letter-spacing: -0.5px;
    line-height: var(--line-height-tight);
}
.stat-label {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    margin-top: var(--space-2xs);
    font-weight: var(--font-weight-medium);
}
.stat-icon {
    font-size: 1.8rem;
    margin-bottom: var(--space-xs);
}

/* ================================================================
   16. 评论
   ================================================================ */
.comments-section {
    margin: var(--space-xl) 0;
}
.comment-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}
.comment-item {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-lg) 18px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.comment-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}
.comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--space-sm);
}
.comment-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    background: linear-gradient(135deg, #e8e5f0, #d5d0e8);
    flex-shrink: 0;
}
.comment-user {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-sm);
    color: var(--color-dark);
}
.comment-time {
    font-size: var(--font-xs);
    color: var(--color-text-muted);
    margin-left: auto;
}
.comment-text {
    font-size: var(--font-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* ================================================================
   17. 侧边栏
   ================================================================ */
.sidebar-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 18px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.sidebar-card:hover {
    box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
    font-size: var(--font-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    padding-left: 10px;
    border-left: 3px solid var(--color-primary);
}
.update-time {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
    background: var(--color-tag);
    padding: var(--space-xs) 10px;
    border-radius: var(--radius-xs);
    display: inline-block;
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}
.rank-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.rank-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: var(--space-sm) 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    background: #faf9fc;
}
.rank-list li:hover {
    background: var(--color-tag);
    transform: translateX(3px);
}
.rank-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 0.75rem;
    color: #fff;
    background: #95a5a6;
    flex-shrink: 0;
}
.rank-list li:nth-child(1) .rank-num {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
}
.rank-list li:nth-child(2) .rank-num {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    box-shadow: 0 2px 8px rgba(243, 156, 18, 0.3);
}
.rank-list li:nth-child(3) .rank-num {
    background: linear-gradient(135deg, #e67e22, #d35400);
    box-shadow: 0 2px 8px rgba(230, 126, 34, 0.3);
}
.rank-img {
    width: 40px;
    height: 54px;
    border-radius: 5px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: var(--shadow-xs);
}
.rank-info {
    flex: 1;
    min-width: 0;
}
.rank-title {
    font-size: var(--font-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rank-meta {
    font-size: var(--font-xs);
    color: var(--color-text-light);
}

/* ================================================================
   18. 下载区域
   ================================================================ */
.download-section {
    background: linear-gradient(150deg, #f5f3fa 0%, #eae7ed 50%, #f0edf7 100%);
    border-radius: var(--radius-lg);
    padding: clamp(20px, 3vw, 36px) clamp(16px, 3vw, var(--space-3xl));
    margin: var(--space-2xl) 0;
    text-align: center;
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}
.download-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(183, 147, 230, 0.08) 0%, transparent 50%);
    pointer-events: none;
}
.download-section h2 {
    font-size: var(--font-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    position: relative;
}
.download-subtitle {
    font-size: var(--font-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
    position: relative;
}
.download-btns {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    position: relative;
}
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: 25px;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-sm);
    text-decoration: none;
    transition: var(--transition);
    background: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}
.download-btn:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    background: #faf9ff;
}
.download-btn:active {
    transform: scale(0.97);
}
.download-btn:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}
.download-btn.primary-dl {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #fff;
    border-color: var(--color-primary);
    box-shadow: 0 4px 16px rgba(53, 50, 167, 0.35);
}
.download-btn.primary-dl:hover {
    background: linear-gradient(135deg, var(--color-primary-hover), #4a47c0);
    box-shadow: 0 6px 22px rgba(53, 50, 167, 0.45);
}

/* ================================================================
   19. FAQ
   ================================================================ */
.faq-section {
    margin: var(--space-2xl) 0;
}
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.faq-item {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--color-accent);
}
.faq-item summary {
    padding: 14px 18px;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-sm);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--color-dark);
    transition: var(--transition-fast);
    user-select: none;
}
.faq-item summary:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: -2px;
}
.faq-item summary::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-light);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: var(--space-sm);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-tag);
    border-radius: 50%;
}
.faq-item[open] summary {
    color: var(--color-primary);
}
.faq-item[open] summary::after {
    content: '−';
    color: var(--color-primary);
    background: #e0daf5;
    transform: rotate(180deg);
}
.faq-answer {
    padding: 0 18px 16px;
    font-size: var(--font-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* ================================================================
   20. 友情链接
   ================================================================ */
.friend-links {
    margin: var(--space-2xl) 0;
    text-align: center;
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
}
.friend-links h3 {
    font-size: var(--font-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: 14px;
}
.links-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.link_friendlinks_a {
    text-decoration: none;
    color: var(--color-text-light);
    font-size: var(--font-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    background: var(--color-tag);
    transition: var(--transition);
    font-weight: var(--font-weight-medium);
    border: 1px solid transparent;
}
.link_friendlinks_a:hover {
    color: var(--color-primary);
    border-color: var(--color-primary-light);
    background: #f5f2fc;
    transform: translateY(-1px);
}
.link_friendlinks_a:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

/* ================================================================
   21. 底部导航
   ================================================================ */
.bottom-nav {
    width: 100%;
    background: var(--color-dark);
    color: #ccc;
    padding: clamp(20px, 3vw, 36px) clamp(12px, 3vw, var(--space-4xl));
    margin-top: var(--space-3xl);
}
.bottom-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-xl);
}
.bottom-nav h4 {
    color: #fff;
    font-size: var(--font-sm);
    margin-bottom: 10px;
    font-weight: var(--font-weight-semibold);
    position: relative;
    padding-bottom: var(--space-sm);
}
.bottom-nav h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}
.bottom-nav a {
    display: block;
    color: #aaa;
    text-decoration: none;
    font-size: var(--font-xs);
    padding: var(--space-2xs) 0;
    transition: var(--transition-fast);
}
.bottom-nav a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}
.bottom-nav a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}
.bottom-copyright {
    grid-column: 1 / -1;
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-xs);
    color: #777;
}
.mobile-brand-link {
    display: inline-block;
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-full);
    margin-top: var(--space-sm);
    transition: var(--transition);
    font-size: var(--font-sm);
}
.mobile-brand-link:hover {
    background: var(--color-accent);
    color: var(--gray-900);
}

/* ================================================================
   22. 关于我们页面 (about.html)
   ================================================================ */
.about-timeline {
    position: relative;
    padding-left: 30px;
    border-left: 3px solid var(--color-primary-light);
    margin: var(--space-xl) 0;
}
.timeline-item {
    position: relative;
    margin-bottom: var(--space-2xl);
    padding-left: var(--space-xl);
    animation: fadeInUp 0.5s ease-out both;
}
.timeline-item:nth-child(1) { animation-delay: 0.05s; }
.timeline-item:nth-child(2) { animation-delay: 0.15s; }
.timeline-item:nth-child(3) { animation-delay: 0.25s; }
.timeline-item:nth-child(4) { animation-delay: 0.35s; }
.timeline-item:nth-child(5) { animation-delay: 0.45s; }
.timeline-item::before {
    content: '';
    position: absolute;
    left: -39px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px var(--color-primary-light);
    transition: var(--transition);
}
.timeline-item:hover::before {
    transform: scale(1.3);
    box-shadow: 0 0 0 5px var(--color-primary-light);
}
.timeline-year {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    font-size: var(--font-sm);
}
.timeline-content {
    font-size: var(--font-sm);
    color: var(--color-text-light);
    margin-top: var(--space-2xs);
    line-height: var(--line-height-relaxed);
}
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.team-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out both;
}
.team-card:nth-child(1) { animation-delay: 0.05s; }
.team-card:nth-child(2) { animation-delay: 0.15s; }
.team-card:nth-child(3) { animation-delay: 0.25s; }
.team-card:nth-child(4) { animation-delay: 0.35s; }
.team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
}
.team-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 10px;
    background: linear-gradient(135deg, #e8e5f0, #d5d0e8);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
}
.team-card:hover .team-avatar {
    box-shadow: var(--shadow-md);
}
.team-name {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-sm);
    color: var(--color-dark);
    margin-bottom: 2px;
}
.team-role {
    font-size: var(--font-xs);
    color: var(--color-text-light);
}
.contact-info-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    align-items: center;
    justify-content: center;
    margin: var(--space-xl) 0;
}
.contact-item {
    text-align: center;
    flex: 1;
    min-width: 120px;
    transition: var(--transition);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
}
.contact-item:hover {
    background: var(--color-tag);
    transform: translateY(-2px);
}
.ci-icon {
    font-size: 2rem;
    margin-bottom: var(--space-xs);
}
.ci-label {
    font-size: var(--font-xs);
    color: var(--color-text-light);
    margin-bottom: 2px;
}
.ci-value {
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    font-size: var(--font-sm);
}

/* ================================================================
   23. 平台介绍页面 (platform.html)
   ================================================================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}
.feature-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out both;
}
.feature-card:nth-child(1) { animation-delay: 0.05s; }
.feature-card:nth-child(2) { animation-delay: 0.1s; }
.feature-card:nth-child(3) { animation-delay: 0.15s; }
.feature-card:nth-child(4) { animation-delay: 0.2s; }
.feature-card:nth-child(5) { animation-delay: 0.25s; }
.feature-card:nth-child(6) { animation-delay: 0.3s; }
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-accent);
}
.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    transition: var(--transition);
    display: inline-block;
}
.feature-card:hover .feature-icon {
    transform: scale(1.15);
}

/* ================================================================
   24. 筛选标签 (hot-movies.html)
   ================================================================ */
.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}
.filter-tag {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition);
    border: 1.5px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text-light);
    white-space: nowrap;
    user-select: none;
}
.filter-tag:hover {
    border-color: var(--color-primary-light);
    color: var(--color-primary);
    background: #faf9ff;
}
.filter-tag.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #fff;
    border-color: var(--color-primary);
    box-shadow: 0 2px 10px rgba(53, 50, 167, 0.3);
}
.filter-tag:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

/* ================================================================
   25. 动画关键帧
   ================================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ================================================================
   26. 响应式设计
   ================================================================ */

/* --- 1200px: 缩小侧边栏，3列影视卡片 --- */
@media (max-width: 1200px) {
    .content-layout {
        grid-template-columns: 1fr 280px;
        gap: 18px;
    }
    .movie-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-md);
    }
}

/* --- 992px: 侧边栏到底部，2列明星 --- */
@media (max-width: 992px) {
    .content-layout {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    .content-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .movie-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    .star-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    .plot-grid,
    .detail-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
    .brand-banner {
        min-height: clamp(220px, 35vw, 320px);
    }
}

/* --- 768px: 移动端导航，2列影视卡片 --- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
    /* 移动端菜单面板 */
    #mobile-menu-toggle:checked ~ .top-nav .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: var(--space-xl);
        gap: var(--space-xs);
        z-index: 999;
        overflow-y: auto;
        animation: fadeIn 0.2s ease-out;
    }
    #mobile-menu-toggle:checked ~ .top-nav .nav-links a {
        padding: var(--space-md) var(--space-lg);
        font-size: var(--font-base);
        border-radius: var(--radius-md);
        width: 100%;
    }
    .nav-user {
        margin-left: auto;
        padding: 5px 10px;
        font-size: 0.75rem;
    }
    .user-avatar {
        width: 24px;
        height: 24px;
        font-size: 0.65rem;
    }
    .nav-brand h1 {
        font-size: 1rem;
    }
    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
    .content-sidebar {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    .movie-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }
    .star-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .plot-grid,
    .detail-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .plot-card img {
        width: 70px;
        height: 100px;
    }
    .detail-card img {
        width: 80px;
        height: 115px;
    }
    .brand-banner {
        min-height: 200px;
    }
    .banner-title {
        font-size: 1.3rem;
    }
    .banner-subtitle {
        font-size: 0.8rem;
    }
    .movie-card .card-body {
        padding: 6px var(--space-sm) 10px;
    }
    .card-title {
        font-size: 0.7rem;
    }
    .card-meta {
        font-size: 0.6rem;
    }
    .stats-row {
        gap: var(--space-sm);
    }
    .stat-card {
        min-width: 80px;
        padding: var(--space-md) var(--space-sm);
    }
    .stat-number {
        font-size: 1.2rem;
    }
    .download-btns {
        gap: var(--space-sm);
    }
    .download-btn {
        padding: 10px 14px;
        font-size: 0.75rem;
    }
    .section-header h2 {
        font-size: 1rem;
    }
    .bottom-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- 640px: 更紧凑的布局 --- */
@media (max-width: 640px) {
    .movie-grid {
        gap: var(--space-xs);
    }
    .card-body {
        padding: 6px var(--space-sm) 8px;
    }
    .card-meta span {
        font-size: 0.6rem;
        padding: 1px 5px;
    }
    .card-type-tag {
        font-size: 0.6rem;
    }
    .plot-card {
        padding: 10px;
        gap: 10px;
    }
    .plot-card img {
        width: 60px;
        height: 85px;
    }
    .detail-card {
        padding: 10px;
        gap: 10px;
    }
    .detail-card img {
        width: 70px;
        height: 100px;
    }
    .stats-row {
        gap: 6px;
    }
    .stat-card {
        padding: 10px 6px;
        min-width: 70px;
    }
    .stat-number {
        font-size: 1rem;
    }
    .stat-icon {
        font-size: 1.3rem;
    }
    .banner-cta {
        flex-direction: column;
        align-items: center;
    }
    .btn-cta {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

/* --- 480px: 最小屏优化 --- */
@media (max-width: 480px) {
    .movie-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }
    .star-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }
    .plot-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }
    .brand-banner {
        min-height: 170px;
    }
    .banner-title {
        font-size: 1.1rem;
    }
    .download-btn {
        padding: var(--space-sm) 10px;
        font-size: 0.7rem;
        border-radius: var(--radius-xl);
    }
    .link_friendlinks_a {
        font-size: 0.7rem;
        padding: var(--space-xs) 10px;
    }
    .team-grid {
        grid-template-columns: 1fr 1fr;
    }
    .contact-info-card {
        gap: var(--space-md);
    }
    .contact-item {
        min-width: 100px;
    }
    .bottom-nav {
        padding: var(--space-lg) var(--space-md);
    }
    .bottom-inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
}

/* ================================================================
   27. 暗色模式
   ================================================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0f0f1a;
        --color-bg-light: #1a1a30;
        --color-white: #1a1a2e;
        --color-dark: #e8e8f0;
        --color-text: #c8c8d8;
        --color-text-light: #9a9ab0;
        --color-text-muted: #6a6a80;
        --color-border: #2a2a45;
        --color-border-light: #222240;
        --color-tag: #1e1e38;
        --color-tag-hover: #282848;

        --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.3);
        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
        --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
        --shadow-xl: 0 12px 60px rgba(0, 0, 0, 0.55);
        --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.3);
        --shadow-card-hover: 0 6px 28px rgba(0, 0, 0, 0.45);
    }

    body {
        background-color: #0f0f1a;
    }

    /* 导航栏 */
    .top-nav {
        background: rgba(26, 26, 46, 0.92);
        border-bottom-color: var(--color-border);
    }
    .nav-links a.active {
        background: rgba(53, 50, 167, 0.25);
    }
    .nav-user {
        background: var(--color-tag);
    }
    .nav-user:hover {
        background: #252545;
    }

    /* 移动端菜单 */
    @media (max-width: 768px) {
        #mobile-menu-toggle:checked ~ .top-nav .nav-links {
            background: rgba(15, 15, 26, 0.98);
        }
    }

    /* Banner 背景叠加 */
    .brand-banner {
        background: linear-gradient(160deg, #0a0a1a 0%, #1a1050 40%, #0a0a1a 100%);
    }

    /* 卡片 */
    .movie-card,
    .star-card,
    .plot-card,
    .detail-card,
    .stat-card,
    .comment-item,
    .sidebar-card,
    .team-card,
    .feature-card,
    .contact-info-card,
    .platform-intro,
    .faq-item {
        background: var(--color-white);
        border-color: var(--color-border);
    }

    .stat-card {
        background: linear-gradient(135deg, #1a1a2e 0%, #1e1e35 100%);
    }

    /* 卡片图片包装器背景 */
    .card-img-wrap {
        background: linear-gradient(135deg, #1e1e38, #252545);
    }

    /* 评分 */
    .card-rating {
        background: rgba(0, 0, 0, 0.85);
    }

    /* 类型标签 */
    .card-type-tag {
        background: rgba(53, 50, 167, 0.2);
    }

    /* 下载区域 */
    .download-section {
        background: linear-gradient(150deg, #1a1a30 0%, #1e1e38 50%, #1a1a2e 100%);
    }

    /* FAQ */
    .faq-item summary::after {
        background: var(--color-tag);
    }
    .faq-item[open] summary::after {
        background: rgba(53, 50, 167, 0.25);
    }

    /* 页脚 */
    .bottom-nav {
        background: #0a0a18;
    }

    /* 评论区头像 */
    .comment-avatar {
        background: linear-gradient(135deg, #1e1e38, #252545);
    }

    /* 团队头像 */
    .team-avatar {
        background: linear-gradient(135deg, #1e1e38, #252545);
    }

    /* 排名列表项 */
    .rank-list li {
        background: #1e1e35;
    }
    .rank-list li:hover {
        background: var(--color-tag);
    }

    /* 时间线 */
    .about-timeline {
        border-left-color: var(--color-primary-light);
    }
    .timeline-item::before {
        border-color: var(--color-white);
    }

    /* 筛选标签 */
    .filter-tag {
        background: var(--color-white);
    }
    .filter-tag:hover {
        background: #252545;
    }

    /* 侧边栏统计 */
    .sidebar-card .update-time {
        background: var(--color-tag);
    }

    /* 高亮项 */
    .intro-highlight-item {
        background: var(--color-tag);
    }
    .intro-highlight-item:hover {
        background: var(--color-tag-hover);
    }

    /* 按钮 */
    .download-btn {
        background: var(--color-white);
    }
    .download-btn:hover {
        background: #252545;
    }

    /* 友情链接 */
    .link_friendlinks_a {
        background: var(--color-tag);
    }
    .link_friendlinks_a:hover {
        background: #252545;
    }
}

/* ================================================================
   28. 打印样式
   ================================================================ */
@media print {
    *,
    *::before,
    *::after {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    .top-nav,
    .brand-banner,
    .content-sidebar,
    .download-section,
    .faq-section,
    .friend-links,
    .bottom-nav,
    .mobile-menu-btn,
    #mobile-menu-toggle,
    .nav-user,
    .banner-cta,
    .filter-tags {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        background: #fff;
    }

    .main-container {
        max-width: 100%;
        padding: 0;
    }

    .content-layout {
        display: block;
    }

    .content-main {
        width: 100%;
    }

    .movie-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12pt;
    }
    .star-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .movie-card,
    .star-card,
    .plot-card,
    .detail-card,
    .stat-card,
    .comment-item {
        break-inside: avoid;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }

    a {
        text-decoration: underline;
    }

    img {
        max-width: 100% !important;
    }

    .section-header h2::before {
        background: #000;
    }
}

/* ================================================================
   29. 减少动效偏好
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .brand-banner::after {
        animation: none;
    }

    .btn-cta-primary {
        animation: none;
    }

    .highlight-dot {
        animation: none;
    }
}

/* ================================================================
   30. 全局 Focus 可见样式
   ================================================================ */
:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
    border-radius: var(--radius-xs);
}

/* 覆盖不需要 outline 的元素 */
.top-nav:focus-visible,
.brand-banner:focus-visible,
.main-container:focus-visible,
.content-layout:focus-visible,
.content-main:focus-visible,
.section-header:focus-visible,
.stats-row:focus-visible,
.comments-section:focus-visible,
.faq-section:focus-visible,
.friend-links:focus-visible,
.download-section:focus-visible {
    outline: none;
}