/* 麻豆 MADOU FILMS - 全局样式 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: #000000;
    color: #DDDDDD;
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}
body.panel-open {
    overflow: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: #FFFFFF; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* 顶部信息栏 */
.top-bar {
    background: #000000;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    font-size: 0.8125rem;
    color: #A5A5A5;
}
.top-bar-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.top-bar-left { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-bar-center {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex: 1;
}
.top-bar-center a { color: #A5A5A5; transition: color 0.2s; }
.top-bar-center a:hover { color: #FFFFFF; }
.top-bar-right {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: flex-end;
    flex: 1;
}
.top-bar-right a, .search-trigger {
    color: #A5A5A5;
    font-size: 0.8125rem;
    transition: color 0.2s;
}
.top-bar-right a:hover, .search-trigger:hover { color: #FFFFFF; }
.top-bar-mobile { display: none; }

/* 品牌导航 */
.brand-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #000000;
    border-bottom: 1px solid rgba(255,255,255,0.12);
}
.brand-nav-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand-nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    min-width: 0;
}
.nav-menu-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    padding: 0 12px;
    color: #DDDDDD;
    font-size: 0.875rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    transition: border-color 0.2s, color 0.2s;
}
.nav-menu-btn:hover { border-color: rgba(255,255,255,0.5); color: #FFFFFF; }
.menu-icon {
    width: 18px;
    height: 12px;
    position: relative;
    display: block;
}
.menu-icon::before, .menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: currentColor;
}
.menu-icon::before { top: 0; box-shadow: 0 5px 0 currentColor; }
.menu-icon::after { bottom: 0; }
.current-channel {
    font-size: 0.875rem;
    color: #A5A5A5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.brand-nav-center {
    flex: 0 0 auto;
    text-align: center;
}
.logo-link { display: inline-flex; align-items: center; justify-content: center; }
.logo-img {
    height: 36px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
}
.logo-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.2;
}
.logo-text strong {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #FFFFFF;
}
.logo-text em {
    font-style: normal;
    font-size: 0.625rem;
    letter-spacing: 0.18em;
    color: #C7C7C7;
    margin-top: 2px;
}
.brand-nav-right {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    flex: 1;
}
.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 18px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 4px;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.nav-btn-primary {
    background: #FFFFFF;
    color: #000000;
}
.nav-btn-primary:hover { background: #EDEDED; color: #000000; }
.nav-btn-secondary {
    background: transparent;
    color: #FFFFFF;
    border: 1px solid rgba(255,255,255,0.45);
}
.nav-btn-secondary:hover { border-color: #FFFFFF; }

/* 影视频道导航 */
.channel-nav {
    background: #050505;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.channel-nav-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.channel-scroll {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex: 1;
    min-width: 0;
}
.channel-scroll::-webkit-scrollbar { display: none; }
.channel-item {
    flex: 0 0 auto;
    padding: 0 14px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    font-size: 0.875rem;
    color: #A5A5A5;
    position: relative;
    white-space: nowrap;
    transition: color 0.2s;
}
.channel-item:hover { color: #FFFFFF; }
.channel-item.is-active {
    color: #FFFFFF;
    font-weight: 500;
}
.channel-item.is-active::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 0;
    height: 2px;
    background: #FFFFFF;
}
.channel-more-wrap { position: relative; flex: 0 0 auto; margin-left: 8px; }
.channel-more-btn {
    height: 36px;
    padding: 0 14px;
    font-size: 0.875rem;
    color: #A5A5A5;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    transition: color 0.2s, border-color 0.2s;
}
.channel-more-btn:hover, .channel-more-btn[aria-expanded="true"] {
    color: #FFFFFF;
    border-color: rgba(255,255,255,0.5);
}
.channel-more-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    background: #121212;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 6px;
    padding: 8px 0;
    box-shadow: 0 18px 46px rgba(0,0,0,0.48);
    z-index: 120;
}
.channel-more-menu a {
    display: block;
    padding: 10px 18px;
    font-size: 0.875rem;
    color: #DDDDDD;
    transition: background 0.15s, color 0.15s;
}
.channel-more-menu a:hover {
    background: #1A1A1A;
    color: #FFFFFF;
}

/* 主内容区 */
.site-main {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px 80px;
}
.page-header {
    padding: 48px 0 32px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 40px;
}
.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #F7F7F7;
    margin-bottom: 12px;
}
.page-header .page-lead {
    font-size: 1rem;
    color: #A5A5A5;
    max-width: 720px;
    line-height: 1.8;
}

/* 通用区块 */
.section {
    margin-bottom: 56px;
}
.section-title {
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: #F7F7F7;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.section-title a {
    font-size: 0.875rem;
    font-weight: 400;
    color: #A5A5A5;
    letter-spacing: 0;
}
.section-title a:hover { color: #FFFFFF; }

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: #0B0B0B;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.2s, background 0.2s;
}
.card:hover {
    border-color: rgba(255,255,255,0.28);
    background: #121212;
}
.card-body { padding: 20px; }
.card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: #F7F7F7;
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}
.card-meta {
    font-size: 0.8125rem;
    color: #727272;
    margin-bottom: 10px;
}
.card-desc {
    font-size: 0.875rem;
    color: #A5A5A5;
    line-height: 1.7;
}
.card-link {
    display: inline-block;
    margin-top: 14px;
    font-size: 0.875rem;
    color: #C7C7C7;
    border-bottom: 1px solid rgba(255,255,255,0.25);
    padding-bottom: 2px;
    transition: color 0.2s, border-color 0.2s;
}
.card-link:hover {
    color: #FFFFFF;
    border-color: #FFFFFF;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    white-space: nowrap;
}
.btn-primary {
    background: #FFFFFF;
    color: #000000;
}
.btn-primary:hover { background: #EDEDED; color: #000000; }
.btn-secondary {
    background: transparent;
    color: #FFFFFF;
    border: 1px solid rgba(255,255,255,0.45);
}
.btn-secondary:hover { border-color: #FFFFFF; }
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}
a:focus-visible, button:focus-visible {
    outline: 2px solid #FFFFFF;
    outline-offset: 3px;
}

/* 首页主视觉 */
.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    padding: 48px 0 56px;
    align-items: center;
}
.hero-visual {
    background: #0B0B0B;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%) contrast(1.05);
}
.hero-visual-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #121212 0%, #0B0B0B 50%, #1A1A1A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
}
.hero-visual-placeholder span {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.15);
}
.hero-content h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #F7F7F7;
    line-height: 1.35;
    margin-bottom: 16px;
}
.hero-content .hero-lead {
    font-size: 1rem;
    color: #A5A5A5;
    line-height: 1.85;
    margin-bottom: 24px;
}
.hero-news {
    margin-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
}
.hero-news-item {
    margin-bottom: 16px;
}
.hero-news-item:last-child { margin-bottom: 0; }
.hero-news-item .label {
    font-size: 0.75rem;
    color: #727272;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
}
.hero-news-item a {
    font-size: 0.9375rem;
    color: #DDDDDD;
    transition: color 0.2s;
}
.hero-news-item a:hover { color: #FFFFFF; }

/* 内容列表与文章 */
.content-block {
    background: #0B0B0B;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 28px;
    margin-bottom: 24px;
}
.content-block h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #F7F7F7;
    margin-bottom: 12px;
    letter-spacing: 0.03em;
}
.content-block h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: #F7F7F7;
    margin: 20px 0 10px;
}
.content-block p {
    font-size: 0.9375rem;
    color: #DDDDDD;
    line-height: 1.85;
    margin-bottom: 12px;
}
.content-block p:last-child { margin-bottom: 0; }
.content-block .note {
    font-size: 0.875rem;
    color: #A5A5A5;
    border-left: 2px solid rgba(255,255,255,0.25);
    padding-left: 14px;
    margin-top: 16px;
}
.content-meta {
    font-size: 0.8125rem;
    color: #727272;
    margin-bottom: 16px;
}
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0;
}
.tag {
    display: inline-block;
    padding: 4px 12px;
    font-size: 0.75rem;
    color: #C7C7C7;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 3px;
}

/* FAQ */
.faq-list details {
    background: #0B0B0B;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-list summary {
    padding: 16px 20px;
    font-size: 0.975rem;
    font-weight: 500;
    color: #F7F7F7;
    cursor: pointer;
    list-style: none;
    position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
    color: #A5A5A5;
}
.faq-list details[open] summary::after { content: '−'; }
.faq-list .faq-answer {
    padding: 0 20px 18px;
    font-size: 0.9rem;
    color: #A5A5A5;
    line-height: 1.8;
}

/* 页脚 */
.site-footer {
    background: #000000;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 56px 0 120px;
}
.footer-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
}
.footer-brand { margin-bottom: 40px; }
.footer-logo { display: inline-block; margin-bottom: 16px; }
.footer-logo-img { height: 32px; width: auto; }
.footer-logo-text strong {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #FFFFFF;
    display: block;
}
.footer-logo-text em {
    font-style: normal;
    font-size: 0.625rem;
    letter-spacing: 0.18em;
    color: #C7C7C7;
}
.footer-intro {
    max-width: 520px;
    font-size: 0.875rem;
    color: #A5A5A5;
    line-height: 1.8;
}
.footer-cols {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 40px;
}
.footer-col h3 {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: #C7C7C7;
    margin-bottom: 16px;
    text-transform: uppercase;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a {
    font-size: 0.875rem;
    color: #A5A5A5;
    transition: color 0.2s;
}
.footer-col a:hover { color: #FFFFFF; }
.footer-notice {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    margin-bottom: 20px;
}
.footer-notice p {
    font-size: 0.8125rem;
    color: #727272;
    line-height: 1.7;
    max-width: 900px;
}
.footer-copy p {
    font-size: 0.8125rem;
    color: #727272;
}

/* 全站栏目面板 */
.side-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 500px;
    max-width: 90vw;
    height: 100%;
    background: #0B0B0B;
    border-right: 1px solid rgba(255,255,255,0.12);
    z-index: 200;
    transform: translateX(-100%);
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.3s ease, visibility 0.3s;
    display: flex;
    flex-direction: column;
}
.side-panel.is-open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
}
.side-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    flex-shrink: 0;
}
.side-logo-img { height: 28px; width: auto; }
.side-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #FFFFFF;
}
.side-panel-close {
    height: 36px;
    padding: 0 14px;
    font-size: 0.875rem;
    color: #A5A5A5;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 4px;
}
.side-panel-close:hover { color: #FFFFFF; border-color: #FFFFFF; }
.side-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    -webkit-overflow-scrolling: touch;
}
.panel-group { margin-bottom: 32px; }
.panel-group h4 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: #727272;
    margin-bottom: 12px;
    text-transform: uppercase;
}
.panel-link {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.panel-link strong {
    display: block;
    font-size: 0.975rem;
    color: #F7F7F7;
    margin-bottom: 4px;
}
.panel-link span {
    font-size: 0.8125rem;
    color: #A5A5A5;
    line-height: 1.5;
}
.panel-link:hover strong { color: #FFFFFF; }

/* 搜索面板 */
.search-panel {
    position: fixed;
    inset: 0;
    background: #000000;
    z-index: 210;
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.25s, visibility 0.25s;
    overflow-y: auto;
}
.search-panel.is-open {
    visibility: visible;
    pointer-events: auto;
    opacity: 1;
}
.search-panel-inner {
    max-width: 720px;
    margin: 0 auto;
    padding: 80px 24px 60px;
    position: relative;
}
.search-close {
    position: absolute;
    top: 24px;
    right: 24px;
    height: 40px;
    padding: 0 16px;
    font-size: 0.875rem;
    color: #A5A5A5;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 4px;
}
.search-close:hover { color: #FFFFFF; border-color: #FFFFFF; }
.search-box { margin-bottom: 40px; }
.search-box input {
    width: 100%;
    height: 56px;
    background: #0B0B0B;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 6px;
    padding: 0 20px;
    font-size: 1.0625rem;
    color: #FFFFFF;
    outline: none;
    transition: border-color 0.2s;
}
.search-box input::placeholder { color: #727272; }
.search-box input:focus { border-color: rgba(255,255,255,0.5); }
.search-section { margin-bottom: 32px; }
.search-section h3 {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: #727272;
    margin-bottom: 14px;
}
.search-tags, .search-links, .search-result-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.search-tags a, .search-links a, .search-result-list a {
    display: inline-block;
    padding: 8px 16px;
    font-size: 0.875rem;
    color: #DDDDDD;
    background: #121212;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 4px;
    transition: border-color 0.2s, color 0.2s;
}
.search-tags a:hover, .search-links a:hover, .search-result-list a:hover {
    border-color: rgba(255,255,255,0.4);
    color: #FFFFFF;
}
.search-empty {
    font-size: 0.9rem;
    color: #A5A5A5;
}

/* 遮罩 */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.65);
    z-index: 190;
    visibility: hidden;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.25s, visibility 0.25s;
}
.overlay.is-visible {
    visibility: visible;
    pointer-events: auto;
    opacity: 1;
}

/* 手机底部导航 */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    padding-bottom: env(safe-area-inset-bottom, 0);
    background: #000000;
    border-top: 1px solid rgba(255,255,255,0.12);
    z-index: 150;
    justify-content: space-around;
    align-items: center;
}
.mb-item {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    font-size: 0.8125rem;
    color: #A5A5A5;
    transition: color 0.2s;
}
.mb-item.is-active { color: #FFFFFF; font-weight: 500; }

/* 响应式 */
@media (max-width: 1024px) {
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero { grid-template-columns: 1fr; gap: 28px; }
    .footer-cols { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .top-bar-inner { height: 40px; padding: 0 14px; }
    .top-bar-left, .top-bar-center, .top-bar-right { display: none; }
    .top-bar-mobile {
        display: flex;
        width: 100%;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
    }
    .top-bar-brand-short {
        font-size: 0.8125rem;
        color: #A5A5A5;
        flex: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .top-bar-premiere {
        font-size: 0.8125rem;
        color: #C7C7C7;
        padding: 6px 10px;
        border: 1px solid rgba(255,255,255,0.2);
        border-radius: 3px;
    }
    .brand-nav-inner { height: 56px; padding: 0 14px; }
    .menu-text { display: none; }
    .current-channel { display: none; }
    .brand-nav-right .nav-btn-primary { display: none; }
    .nav-btn { height: 36px; padding: 0 12px; font-size: 0.8125rem; }
    .logo-img { height: 30px; }
    .logo-text strong { font-size: 1.125rem; }
    .channel-nav-inner { padding: 0 14px; height: 44px; }
    .channel-item { padding: 0 12px; height: 44px; font-size: 0.8125rem; }
    .channel-item.is-active::after { left: 12px; right: 12px; }
    .site-main { padding: 0 14px 100px; }
    .page-header { padding: 32px 0 24px; }
    .page-header h1 { font-size: 1.5rem; }
    .hero { padding: 28px 0 36px; }
    .hero-content h1 { font-size: 1.625rem; }
    .card-grid, .card-grid-2, .card-grid-4 { grid-template-columns: 1fr; gap: 16px; }
    .section { margin-bottom: 40px; }
    .section-title { font-size: 1.1875rem; }
    .content-block { padding: 20px; }
    .footer-cols { grid-template-columns: 1fr 1fr; gap: 24px; }
    .site-footer { padding: 40px 0 100px; }
    .mobile-bottom-nav { display: flex; }
    .side-panel { width: 90vw; }
    .btn-group { flex-direction: column; }
    .btn-group .btn { width: 100%; }
}

@media (max-width: 480px) {
    .footer-cols { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 1.375rem; letter-spacing: 0.04em; }
}

/* 辅助 */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.divider {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 32px 0;
}