* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #0A0A0A;
    --white: #FFFFFF;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-500: #737373;
    --gray-700: #404040;
    --gray-900: #171717;
    --accent: #FFD400;
    --tencent: #FF6B00;
    --iqiyi: #00BE06;
    --youku: #1DB5F8;
    --mgtv: #FF4D4F;
    --bilibili: #FB7299;
    --sidebar-w: 240px;
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    font-size: 16px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.15s ease;
}

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

/* 侧边导航 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-w);
    background: var(--black);
    color: var(--white);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    z-index: 100;
    border-right: 1px solid var(--gray-900);
}

.side-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 900;
    margin-bottom: 48px;
    letter-spacing: -0.5px;
}

.logo-mark {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: var(--radius-sm);
}

.side-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.side-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--gray-500);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.15s ease;
}

.side-link:hover {
    color: var(--white);
    background: var(--gray-900);
}

.side-link.active {
    color: var(--black);
    background: var(--accent);
}

.side-footer {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid var(--gray-900);
}

.side-call {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
}

/* 移动端顶栏 */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--black);
    z-index: 99;
    padding: 0 20px;
}

.mobile-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.mobile-logo {
    color: var(--white);
    font-size: 18px;
    font-weight: 900;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: 0.2s;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 98;
}

.mobile-overlay.active {
    display: block;
}

/* 主内容 */
.main-content {
    margin-left: var(--sidebar-w);
}

/* 通用区块 */
.content-section {
    padding: 80px 48px;
    border-bottom: 1px solid var(--gray-200);
}

.section-head {
    margin-bottom: 48px;
}

.head-left {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 12px;
}

.section-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-500);
    font-family: monospace;
}

.section-head h2 {
    font-size: 40px;
    font-weight: 900;
    letter-spacing: -1px;
}

.section-desc {
    font-size: 16px;
    color: var(--gray-500);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 16px;
}

.btn-black {
    background: var(--black);
    color: var(--white);
}

.btn-black:hover {
    background: var(--gray-700);
}

.btn-line {
    background: transparent;
    color: var(--black);
    border: 2px solid var(--black);
}

.btn-line:hover {
    background: var(--black);
    color: var(--white);
}

.btn-block {
    width: 100%;
}

/* Hero */
.hero-section {
    padding: 80px 48px;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    width: 100%;
}

.hero-badge {
    display: inline-block;
    padding: 6px 12px;
    background: var(--black);
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.hero-sub {
    font-size: 18px;
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-banner {
    position: relative;
}

.hero-banner img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.banner-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    padding: 8px 16px;
    background: var(--accent);
    color: var(--black);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1px;
}

/* 快速索引 */
.quick-index {
    padding: 24px 48px;
    background: var(--black);
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 32px;
    border-bottom: 1px solid var(--gray-900);
}

.index-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--gray-500);
    letter-spacing: 2px;
    flex-shrink: 0;
}

.index-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.index-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--gray-900);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.index-chip:hover {
    background: var(--accent);
    color: var(--black);
}

.chip-num {
    font-size: 12px;
    font-weight: 700;
    color: var(--accent);
    font-family: monospace;
}

.index-chip:hover .chip-num {
    color: var(--black);
}

/* 平台目录 */
.platform-catalog {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.catalog-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.2s ease;
}

.catalog-card:hover {
    border-color: var(--black);
    transform: translateY(-4px);
    box-shadow: 8px 8px 0 var(--black);
}

.catalog-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--white);
}

.catalog-letter {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 900;
}

.catalog-header h3 {
    font-size: 22px;
    font-weight: 900;
}

.tencent-color { background: var(--tencent); }
.iqiyi-color { background: var(--iqiyi); }
.youku-color { background: var(--youku); }
.mgtv-color { background: var(--mgtv); }
.bilibili-color { background: var(--bilibili); }
.more-color { background: var(--gray-700); }

.catalog-body {
    padding: 24px;
}

.catalog-body p {
    color: var(--gray-700);
    margin-bottom: 16px;
    font-size: 15px;
    line-height: 1.7;
}

.catalog-devices {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.catalog-devices span {
    padding: 4px 10px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    color: var(--gray-700);
}

.catalog-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 24px;
}

.catalog-link {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-700);
}

.catalog-link:hover {
    color: var(--black);
}

.more-card {
    border-style: dashed;
}

/* 下载中心 */
.downloads-section {
    background: var(--gray-100);
}

.download-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
}

.device-sidebar {
    position: sticky;
    top: 32px;
    align-self: flex-start;
}

.device-sidebar-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--gray-500);
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.device-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 24px;
}

.device-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--white);
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
}

.device-item:hover {
    border-color: var(--gray-300);
}

.device-item.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.sidebar-note {
    padding: 20px;
    background: var(--white);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
}

.sidebar-note strong {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
}

.sidebar-note p {
    font-size: 13px;
    color: var(--gray-700);
    line-height: 1.6;
}

.device-detail-area {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.device-detail {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.detail-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.detail-icon {
    font-size: 40px;
}

.detail-head h3 {
    font-size: 22px;
    font-weight: 900;
    margin-bottom: 4px;
}

.detail-head p {
    font-size: 14px;
    color: var(--gray-500);
}

.detail-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 16px;
    padding: 12px 0;
    font-size: 15px;
}

.row-label {
    font-weight: 700;
    color: var(--gray-500);
}

.text-link {
    font-weight: 700;
    color: var(--black);
    text-decoration: underline;
}

.text-link:hover {
    color: var(--gray-700);
}

/* 安装流程 */
.process-timeline {
    position: relative;
    padding-left: 48px;
}

.timeline-line {
    position: absolute;
    left: 23px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -48px;
    width: 48px;
    height: 48px;
    background: var(--black);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 900;
    font-family: monospace;
}

.timeline-content h3 {
    font-size: 20px;
    font-weight: 900;
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--gray-700);
    line-height: 1.7;
}

/* 功能索引 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.feature-row {
    display: flex;
    gap: 24px;
    padding: 32px;
    border-bottom: 1px solid var(--gray-200);
    border-right: 1px solid var(--gray-200);
    transition: background 0.15s ease;
}

.feature-row:nth-child(2n) {
    border-right: none;
}

.feature-row:nth-child(7), .feature-row:nth-child(8) {
    border-bottom: none;
}

.feature-row:hover {
    background: var(--gray-100);
}

.feature-index {
    font-size: 32px;
    font-weight: 900;
    color: var(--gray-200);
    font-family: monospace;
    flex-shrink: 0;
}

.feature-info h3 {
    font-size: 18px;
    font-weight: 900;
    margin-bottom: 8px;
}

.feature-info p {
    color: var(--gray-700);
    font-size: 15px;
    line-height: 1.7;
}

/* 安全提示 */
.safety-section {
    background: var(--black);
    color: var(--white);
}

.safety-block {
    max-width: 900px;
}

.safety-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.safety-mark {
    width: 48px;
    height: 48px;
    background: var(--accent);
    color: var(--black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
}

.safety-head h2 {
    font-size: 32px;
    font-weight: 900;
}

.safety-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.safety-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 20px;
    background: var(--gray-900);
    border-radius: var(--radius);
}

.safety-check, .safety-cross {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 14px;
    flex-shrink: 0;
}

.safety-check {
    background: #22C55E;
    color: var(--black);
}

.safety-cross {
    background: #EF4444;
    color: var(--white);
}

.safety-item p {
    font-size: 15px;
    line-height: 1.6;
}

/* 资讯列表 硬性规范 */
ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    box-sizing: border-box;
}

ul.article-cards > li.article-card {
    min-width: 0;
    width: auto;
    max-width: none;
    margin: 0;
    float: none;
    box-sizing: border-box;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.15s ease;
}

ul.article-cards > li.article-card:hover {
    border-color: var(--black);
    transform: translateY(-4px);
}

.article-card .card-thumb {
    width: 100%;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.article-card .card-thumb img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-card .card-body {
    padding: 20px;
}

.article-card .card-date {
    display: block;
    font-size: 12px;
    color: var(--gray-500);
    font-family: monospace;
    margin-bottom: 8px;
}

.article-card .card-title {
    overflow-wrap: anywhere;
    font-size: 16px;
    font-weight: 700;
    color: var(--black);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card .card-summary {
    overflow-wrap: anywhere;
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* FAQ */
.faq-list-modern {
    max-width: 900px;
}

.faq-row {
    padding: 24px 0;
    border-bottom: 1px solid var(--gray-200);
}

.faq-q-modern {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.q-num {
    font-size: 14px;
    font-weight: 900;
    color: var(--accent);
    background: var(--black);
    padding: 4px 8px;
    font-family: monospace;
}

.faq-q-modern h3 {
    font-size: 18px;
    font-weight: 700;
}

.faq-a-modern p {
    color: var(--gray-700);
    line-height: 1.7;
    padding-left: 60px;
}

/* 关于我们 */
.about-block {
    max-width: 900px;
}

.about-lead {
    font-size: 20px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.service-item {
    display: flex;
    gap: 12px;
    padding: 20px;
    background: var(--gray-100);
    border-radius: var(--radius);
}

.service-num {
    font-size: 14px;
    font-weight: 900;
    color: var(--gray-500);
    font-family: monospace;
}

.service-item p {
    font-size: 15px;
    font-weight: 500;
}

.disclaimer-block {
    padding: 24px;
    background: var(--accent);
    color: var(--black);
    border-radius: var(--radius);
    font-size: 14px;
    line-height: 1.7;
    font-weight: 500;
}

/* 联系方式 */
.contact-block {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 64px;
}

.contact-left h2 {
    font-size: 40px;
    font-weight: 900;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.contact-desc {
    font-size: 16px;
    color: var(--gray-700);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.contact-info-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: var(--gray-100);
    border-radius: var(--radius);
}

.ci-label {
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 700;
}

.ci-value {
    font-size: 16px;
    font-weight: 700;
}

.ci-arrow {
    font-weight: 900;
}

.contact-info-item:hover {
    background: var(--gray-200);
}

.notice-box {
    padding: 20px;
    border-left: 4px solid #EF4444;
    background: #FEF2F2;
    color: #991B1B;
    font-size: 14px;
    line-height: 1.7;
}

.demo-card {
    background: var(--gray-100);
    padding: 32px;
    border-radius: var(--radius-lg);
}

.demo-card h3 {
    font-size: 20px;
    font-weight: 900;
    margin-bottom: 8px;
}

.demo-note {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 24px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    background: var(--white);
    outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--black);
}

/* 文章详情 */
.article-detail-section {
    padding: 48px;
    background: var(--gray-100);
    min-height: 90vh;
}

.detail-container {
    max-width: 800px;
    margin: 0 auto;
}

.detail-wrap {
    background: var(--white);
    padding: 48px;
    border-radius: var(--radius-lg);
}

.breadcrumb {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: var(--black);
    font-weight: 500;
}

.detail-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 1.3;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.detail-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    font-size: 14px;
}

.detail-cat {
    padding: 2px 8px;
    background: var(--accent);
    color: var(--black);
    font-weight: 700;
    border-radius: var(--radius-sm);
}

.detail-cover-wrap {
    margin-bottom: 32px;
    border-radius: var(--radius);
    overflow: hidden;
}

.detail-cover {
    width: 100%;
    display: block;
}

.detail-summary {
    padding: 24px;
    background: var(--gray-100);
    border-left: 4px solid var(--black);
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 32px;
    font-weight: 500;
}

.detail-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--gray-700);
}

.detail-content p {
    margin-bottom: 20px;
}

.detail-content h2 {
    font-size: 24px;
    font-weight: 900;
    color: var(--black);
    margin: 40px 0 16px;
}

.detail-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--black);
    margin: 32px 0 12px;
}

.detail-content img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 24px 0;
}

.detail-content ul, .detail-content ol {
    margin: 20px 0;
    padding-left: 24px;
}

.detail-content li {
    margin-bottom: 8px;
}

.detail-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 40px 0;
}

.detail-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.detail-tags span {
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 500;
}

.detail-nav h3 {
    font-size: 18px;
    font-weight: 900;
    margin-bottom: 16px;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}

.nav-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    background: var(--gray-100);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

.nav-card:hover {
    background: var(--accent);
}

.nav-card span:first-child {
    font-size: 24px;
}

.detail-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* 页脚 */
.content-footer {
    margin-left: var(--sidebar-w);
    background: var(--black);
    color: var(--gray-500);
    padding: 64px 48px 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    font-size: 24px;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
}

.footer-desc {
    line-height: 1.7;
    margin-bottom: 16px;
    font-size: 15px;
}

.footer-disc {
    font-size: 13px;
    color: var(--gray-700);
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--gray-900);
    font-size: 13px;
    text-align: center;
}

.footer-grouplinks {
    margin-top: 16px;
}

.footer-grouplinks a {
    color: var(--gray-700);
    margin: 0 8px;
}

.footer-grouplinks a:hover {
    color: var(--accent);
}

/* 响应式 */
@media (max-width: 1200px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .mobile-header {
        display: block;
    }

    .main-content, .content-footer {
        margin-left: 0;
        padding-top: 64px;
    }

    .article-detail-section {
        padding: 24px;
    }
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 40px;
    }

    .platform-catalog {
        grid-template-columns: repeat(2, 1fr);
    }

    .download-layout {
        grid-template-columns: 1fr;
    }

    .device-sidebar {
        position: static;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .feature-row {
        border-right: none !important;
    }

    .feature-row:nth-child(7) {
        border-bottom: 1px solid var(--gray-200) !important;
    }

    .safety-grid {
        grid-template-columns: 1fr;
    }

    .service-grid {
        grid-template-columns: 1fr;
    }

    .contact-block {
        grid-template-columns: 1fr;
    }

    .quick-index {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .content-section, .hero-section {
        padding: 48px 20px;
    }

    .hero-title {
        font-size: 32px;
    }

    .section-head h2 {
        font-size: 28px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .platform-catalog {
        grid-template-columns: 1fr;
    }

    .detail-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .faq-a-modern p {
        padding-left: 0;
    }

    .detail-wrap {
        padding: 24px 20px;
    }

    .detail-title {
        font-size: 26px;
    }

    .nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .detail-actions {
        flex-direction: column;
    }

    .detail-actions .btn {
        width: 100%;
    }

    .content-footer {
        padding: 48px 20px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}