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

:root {
    --bg: #FFFFFF;
    --bg-alt: #FAFAFA;
    --text: #111111;
    --text-sec: #666666;
    --text-tert: #999999;
    --border: #EAEAEA;
    --accent: #111111;
    --radius: 4px;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

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

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

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航 */
.site-header {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.brand-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.primary-nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 14px;
    color: var(--text-sec);
    transition: color 0.15s;
}

.nav-link:hover, .nav-link.active {
    color: var(--text);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-tel {
    font-size: 14px;
    font-weight: 600;
    font-family: monospace;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text);
}

.mobile-drawer {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    transform: translateY(-100%);
    opacity: 0;
    transition: 0.2s;
    z-index: 99;
}

.mobile-drawer.active {
    transform: translateY(0);
    opacity: 1;
}

.drawer-link {
    display: block;
    padding: 14px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--border);
}

.drawer-link:last-child {
    border-bottom: none;
}

.drawer-tel {
    font-weight: 600;
    font-family: monospace;
}

/* 区块通用 */
.section-min {
    padding: 80px 0;
}

.alt-bg {
    background: var(--bg-alt);
}

.section-header-min {
    margin-bottom: 48px;
}

.section-index {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tert);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 8px;
    font-family: monospace;
}

.section-header-min h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.15s;
}

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

.btn-solid:hover {
    opacity: 0.8;
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--text);
}

.btn-ghost:hover {
    background: var(--text);
    color: white;
}

.text-btn {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-sec);
}

.text-btn:hover {
    color: var(--text);
}

/* Hero */
.hero-minimal {
    padding: 100px 0;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-kicker {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-tert);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 16px;
    color: var(--text-sec);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-actions-min {
    display: flex;
    gap: 12px;
}

.hero-banner-min img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius);
}

/* 功能入口条 */
.entry-bar {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.entry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.entry-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    border-right: 1px solid var(--border);
    transition: background 0.15s;
}

.entry-item:last-child {
    border-right: none;
}

.entry-item:hover {
    background: var(--bg-alt);
}

.entry-num {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-tert);
    font-family: monospace;
}

.entry-label {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
}

.entry-arrow {
    font-size: 18px;
    opacity: 0;
    transition: opacity 0.15s;
}

.entry-item:hover .entry-arrow {
    opacity: 1;
}

/* 平台列表 */
.platform-list-min {
    border-top: 1px solid var(--border);
}

.platform-row {
    display: grid;
    grid-template-columns: 120px 1fr 240px 100px;
    gap: 24px;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
}

.platform-name {
    font-size: 17px;
    font-weight: 700;
}

.platform-desc {
    font-size: 14px;
    color: var(--text-sec);
    line-height: 1.6;
}

.platform-devices-min {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.platform-devices-min span {
    padding: 4px 10px;
    background: var(--bg-alt);
    border-radius: var(--radius);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-sec);
}

.platform-actions-min {
    display: flex;
    gap: 16px;
    justify-content: flex-end;
}

/* 下载卡片 */
.download-grid-min {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.download-card-min {
    background: var(--bg);
    padding: 32px 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.15s;
}

.download-card-min:hover {
    border-color: var(--text);
}

.download-card-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.dc-icon {
    font-size: 28px;
}

.download-card-head h3 {
    font-size: 20px;
    font-weight: 700;
}

.dc-list {
    list-style: none;
    margin-bottom: 24px;
}

.dc-list li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-sec);
    line-height: 1.6;
}

.dc-list li::before {
    content: '-';
    margin-right: 8px;
    color: var(--text-tert);
}

.dc-link {
    font-size: 14px;
    font-weight: 600;
}

.dc-link:hover {
    opacity: 0.7;
}

/* 步骤 */
.steps-min {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.step-min {
    position: relative;
}

.step-min-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--border);
    font-family: monospace;
    line-height: 1;
    margin-bottom: 16px;
    display: block;
}

.step-min h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-min p {
    font-size: 14px;
    color: var(--text-sec);
    line-height: 1.7;
}

/* 功能列表 */
.feature-list-min {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.feature-min {
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.feature-min:nth-last-child(-n+2) {
    border-bottom: none;
    padding-bottom: 0;
}

.feature-min h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-min p {
    font-size: 14px;
    color: var(--text-sec);
    line-height: 1.7;
}

/* 安全列表 */
.safety-list-min {
    max-width: 720px;
}

.safety-item-min {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.safety-item-min:last-child {
    border-bottom: none;
}

.safety-dot {
    width: 8px;
    height: 8px;
    background: var(--text);
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
}

.safety-item-min p {
    font-size: 15px;
    line-height: 1.7;
}

/* 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;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.15s;
}

ul.article-cards > li.article-card:hover {
    border-color: var(--text);
}

.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;
    filter: grayscale(20%);
}

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

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

.article-card .card-title {
    overflow-wrap: anywhere;
    font-size: 16px;
    font-weight: 700;
    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: 13px;
    color: var(--text-sec);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* FAQ */
.faq-min {
    max-width: 720px;
}

.faq-details {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.faq-details summary {
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-details summary::-webkit-details-marker {
    display: none;
}

.faq-details summary::after {
    content: '+';
    font-size: 24px;
    font-weight: 300;
    transition: transform 0.15s;
}

.faq-details[open] summary::after {
    transform: rotate(45deg);
}

.faq-details p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-sec);
    line-height: 1.7;
}

/* 关于 */
.about-text {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-sec);
    max-width: 800px;
    margin-bottom: 32px;
}

.about-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 40px;
}

.about-points span {
    font-size: 14px;
    font-weight: 500;
    padding: 12px;
    background: var(--bg-alt);
    border-radius: var(--radius);
}

.disclaimer-min {
    font-size: 13px;
    color: var(--text-tert);
    line-height: 1.7;
    padding: 20px;
    border-left: 2px solid var(--border);
}

/* 联系方式 */
.contact-text h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-text p {
    font-size: 16px;
    color: var(--text-sec);
    margin-bottom: 24px;
}

.tel-big {
    display: inline-block;
    font-size: 40px;
    font-weight: 700;
    font-family: monospace;
    margin-bottom: 8px;
    border-bottom: 2px solid var(--text);
}

.work-time {
    font-size: 14px !important;
    color: var(--text-tert) !important;
    margin-bottom: 32px !important;
}

.contact-notice {
    font-size: 13px !important;
    color: var(--text-tert) !important;
    padding: 16px;
    background: var(--bg);
    border-radius: var(--radius);
    max-width: 560px;
}

/* 文章详情 */
.article-page {
    padding: 60px 0;
}

.article-min-wrap {
    max-width: 680px;
    margin: 0 auto;
}

.breadcrumb {
    font-size: 13px;
    color: var(--text-tert);
    margin-bottom: 32px;
}

.breadcrumb a {
    color: var(--text-sec);
}

.article-min-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.article-min-date {
    font-size: 13px;
    color: var(--text-tert);
    font-family: monospace;
    margin-bottom: 32px;
}

.article-min-cover {
    margin-bottom: 32px;
}

.article-min-cover img {
    width: 100%;
    border-radius: var(--radius);
    filter: grayscale(10%);
}

.article-min-summary {
    font-size: 17px;
    line-height: 1.7;
    color: var(--text);
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
    font-weight: 500;
}

.article-min-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text);
}

.article-min-content p {
    margin-bottom: 24px;
}

.article-min-content h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 40px 0 16px;
}

.article-min-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 32px 0 12px;
}

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

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

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

.article-min-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.article-min-nav {
    display: flex;
    gap: 24px;
}

.min-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-sec);
}

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

/* 页脚 */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 60px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--text-sec);
    margin-bottom: 8px;
}

.footer-disclaimer {
    font-size: 12px;
    color: var(--text-tert);
}

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

.footer-col h5 {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-tert);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-sec);
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-tert);
}

.footer-links a {
    color: var(--text-tert);
    margin-left: 16px;
    font-size: 12px;
}

.footer-links a:hover {
    color: var(--text);
}

/* 响应式 */
@media (max-width: 992px) {
    .primary-nav {
        display: none;
    }

    .nav-tel {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-text h1 {
        font-size: 36px;
    }

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

    .entry-item:nth-child(2) {
        border-right: none;
    }

    .entry-item:nth-child(1), .entry-item:nth-child(2) {
        border-bottom: 1px solid var(--border);
    }

    .platform-row {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .platform-desc {
        grid-column: 1 / -1;
    }

    .platform-actions-min {
        justify-content: flex-start;
    }

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

    .steps-min {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

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

    .feature-min:nth-child(3), .feature-min:nth-child(4) {
        border-bottom: 1px solid var(--border);
        padding-bottom: 32px;
    }

    .feature-min:nth-last-child(-n+2) {
        border-bottom: none;
        padding-bottom: 0;
    }

    .feature-min:nth-last-child(1), .feature-min:nth-last-child(2) {
        border-bottom: none;
        padding-bottom: 0;
    }

    .about-points {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .section-min, .hero-minimal {
        padding: 48px 0;
    }

    .hero-text h1 {
        font-size: 28px;
    }

    .section-header-min h2 {
        font-size: 24px;
    }

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

    .entry-item {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .entry-item:last-child {
        border-bottom: none;
    }

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

    .steps-min {
        grid-template-columns: 1fr;
    }

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

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

    .tel-big {
        font-size: 28px;
    }

    .article-min-title {
        font-size: 26px;
    }

    .article-min-wrap {
        padding: 0 8px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-links {
        text-align: center;
    }

    .footer-links a {
        margin: 0 8px;
    }
}

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