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

:root {
    --primary: #00CFE8;
    --primary-dark: #00A8BF;
    --primary-light: rgba(0, 207, 232, 0.1);
    --secondary: #818CF8;
    --bg: #0F172A;
    --bg-2: #1E293B;
    --bg-3: #334155;
    --text-1: #F1F5F9;
    --text-2: #CBD5E1;
    --text-3: #94A3B8;
    --border: rgba(255, 255, 255, 0.1);
    --glow: 0 0 40px rgba(0, 207, 232, 0.15);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text-1);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 玻璃拟态 */
.glass {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 207, 232, 0.3);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-1);
    border: 1px solid var(--border);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.btn-link {
    background: transparent;
    color: var(--text-2);
    padding: 14px 8px;
}

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

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
    border-radius: 6px;
}

.btn.full {
    width: 100%;
}

/* 导航 */
.site-header {
    position: sticky;
    top: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    color: var(--text-2);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-cta {
    background: var(--primary-light);
    color: var(--primary) !important;
    padding: 8px 16px;
    border-radius: 6px;
}

.nav-cta:hover {
    background: rgba(0, 207, 232, 0.2) !important;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-3);
    font-size: 14px;
    padding-left: 16px;
    border-left: 1px solid var(--border);
}

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

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-1);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero */
.hero {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 207, 232, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #FFFFFF 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 18px;
    color: var(--text-2);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat .num {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat .label {
    font-size: 14px;
    color: var(--text-3);
}

.hero-banner img {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--glow);
}

/* 通用section */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-2);
}

/* 平台 */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.platform-card {
    padding: 32px;
    transition: var(--transition);
}

.platform-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.platform-logo {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.platform-logo.dy { background: linear-gradient(135deg, #000 0%, #25F4EE 50%, #FE2C55 100%); }
.platform-logo.ks { background: linear-gradient(135deg, #FF4906 0%, #FF8800 100%); }
.platform-logo.xhs { background: linear-gradient(135deg, #FE2C55 0%, #FF6B81 100%); }
.platform-logo.sph { background: linear-gradient(135deg, #07C160 0%, #2DC100 100%); }
.platform-logo.bili { background: linear-gradient(135deg, #FB7299 0%, #23ADE5 100%); }
.platform-logo.all { background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); }

.platform-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.platform-card p {
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.7;
}

/* 服务 */
.service-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab {
    padding: 12px 28px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-2);
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.tab.active, .tab:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.service-card {
    padding: 32px;
    position: relative;
    transition: var(--transition);
}

.service-card.highlight {
    background: linear-gradient(135deg, rgba(0, 207, 232, 0.05) 0%, rgba(129, 140, 248, 0.05) 100%);
    border-color: rgba(0, 207, 232, 0.3);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--glow);
}

.card-tag {
    position: absolute;
    top: 24px;
    right: 24px;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    color: white;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-right: 70px;
}

.card-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.meta-tag {
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 4px;
    font-size: 12px;
}

.card-desc {
    color: var(--text-2);
    line-height: 1.7;
    margin-bottom: 24px;
}

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

.card-features li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-2);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.price {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.price small {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-3);
}

/* 优势 */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.adv-item {
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.adv-item:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.adv-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.adv-item h3 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 12px;
}

.adv-item p {
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.7;
}

/* 流程 */
.process {
    position: relative;
}

.process-line {
    position: absolute;
    top: 220px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    opacity: 0.3;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.step {
    text-align: center;
    position: relative;
}

.step-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg);
    border: 4px solid var(--primary);
    margin: 0 auto 24px;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 20px var(--primary);
}

.step-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 16px;
    opacity: 0.5;
}

.step h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.step p {
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.7;
}

/* 保障 */
.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.g-item {
    padding: 32px;
    transition: var(--transition);
}

.g-item:hover {
    border-color: var(--primary);
}

.g-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}

.g-item p {
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.7;
}

/* 资讯 - 严格遵循规则 */
.news {
    background: var(--bg);
}

ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    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(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

ul.article-cards > li.article-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.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;
    transition: var(--transition);
}

.article-card:hover .card-thumb img {
    transform: scale(1.05);
}

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

.article-card .card-title {
    overflow-wrap: anywhere;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.5;
    color: var(--text-1);
    display: block;
}

.article-card .card-title:hover {
    color: var(--primary);
}

.article-card .card-date {
    display: block;
    font-size: 13px;
    color: var(--text-3);
    margin-bottom: 8px;
}

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

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary);
}

.faq-q {
    width: 100%;
    padding: 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 17px;
    font-weight: 500;
    color: var(--text-1);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
}

.faq-q span {
    font-size: 28px;
    color: var(--primary);
    font-weight: 300;
    transition: var(--transition);
    line-height: 1;
}

.faq-item.active .faq-q span {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-a {
    max-height: 300px;
}

.faq-a p {
    padding: 0 24px 24px;
    color: var(--text-2);
    line-height: 1.8;
}

/* 关于我们 */
.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 32px;
    background: linear-gradient(135deg, #FFFFFF 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content p {
    font-size: 17px;
    color: var(--text-2);
    line-height: 1.9;
    margin-bottom: 20px;
    text-align: left;
}

.about-certs {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.cert {
    padding: 12px 24px;
    background: var(--primary-light);
    border-radius: 8px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
}

/* 申请 */
.apply-card {
    padding: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    box-shadow: var(--glow);
}

.apply-info h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.apply-info p {
    color: var(--text-2);
    line-height: 1.8;
    margin-bottom: 32px;
}

.contact {
    padding: 24px;
    background: var(--bg-2);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.contact p {
    margin-bottom: 8px;
    font-size: 15px;
    color: var(--text-2);
}

.contact a {
    color: var(--primary);
    font-weight: 600;
}

.apply-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-2);
}

.form-group input, .form-group select, .form-group textarea {
    padding: 14px 16px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-1);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
    background: var(--bg);
}

.form-group input::placeholder, .form-group textarea::placeholder {
    color: var(--text-3);
}

/* 文章详情 */
.article-crumb {
    padding: 24px 0;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
}

.article-crumb a {
    color: var(--text-2);
}

.article-crumb a:hover {
    color: var(--primary);
}

.article-main {
    max-width: 860px;
    margin: 48px auto;
    padding: 48px;
}

.art-header {
    margin-bottom: 32px;
}

.art-header h1 {
    font-size: 34px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 20px;
}

.art-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-3);
}

.art-summary {
    font-size: 16px;
    color: var(--text-2);
    line-height: 1.7;
}

.art-cover {
    margin-bottom: 40px;
    border-radius: var(--radius);
    overflow: hidden;
}

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

.art-content {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-1);
}

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

.art-content h2, .art-content h3 {
    margin: 36px 0 16px;
    font-weight: 600;
}

.art-content h2 { font-size: 26px; }
.art-content h3 { font-size: 22px; }

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

.art-cta {
    max-width: 860px;
    margin: 0 auto 32px;
    padding: 40px;
    text-align: center;
}

.art-cta h3 {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 12px;
}

.art-cta p {
    color: var(--text-2);
    margin-bottom: 24px;
}

.cta-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.art-back {
    max-width: 860px;
    margin: 0 auto 60px;
}

.back-link {
    color: var(--text-2);
    font-size: 15px;
}

.back-link:hover {
    color: var(--primary);
}

.bottom-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 207, 232, 0.05) 0%, rgba(129, 140, 248, 0.05) 100%);
}

.bottom-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: 48px;
}

.bottom-card h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.bottom-card p {
    color: var(--text-2);
    font-size: 17px;
    margin-bottom: 24px;
}

/* 页脚 */
.site-footer {
    background: #0B1220;
    border-top: 1px solid var(--border);
    padding: 60px 0 24px;
    color: var(--text-2);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.footer-brand p {
    line-height: 1.8;
    margin-bottom: 16px;
    font-size: 15px;
}

.footer-contact a {
    color: var(--primary);
    font-weight: 600;
}

.footer-col h4 {
    color: var(--text-1);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-col a {
    display: block;
    margin-bottom: 12px;
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-3);
}

/* 响应式 */
@media (max-width: 1100px) {
    .process-line {
        display: none;
    }
    .process-steps {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

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

    .hero-content h1 {
        font-size: 38px;
    }

    .apply-card {
        grid-template-columns: 1fr;
        padding: 32px;
    }

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

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-2);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        display: none;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-user {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        padding-top: 16px;
        border-top: 1px solid var(--border);
        width: 100%;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 32px;
    }

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

    section {
        padding: 60px 0;
    }

    .service-grid, .platform-grid, .adv-grid, .guarantee-grid {
        grid-template-columns: 1fr;
    }

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

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

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

    .hero-stats {
        gap: 24px;
    }

    .about-certs {
        flex-direction: column;
        gap: 16px;
        align-items: center;
    }

    .article-main {
        padding: 24px;
    }

    .art-header h1 {
        font-size: 26px;
    }
}