/* ===========================
   抖视科技 GEO官网 - 样式表
   =========================== */

:root {
    --c-primary: #6366f1;
    --c-primary-dark: #4f46e5;
    --c-primary-light: #818cf8;
    --c-secondary: #06b6d4;
    --c-accent: #f59e0b;
    --c-accent-2: #ef4444;
    --c-purple: #a855f7;
    --c-dark: #0b0e1a;
    --c-dark-2: #11142a;
    --c-dark-3: #181c38;
    --c-text: #1e293b;
    --c-text-light: #64748b;
    --c-text-inverse: #f8fafc;
    --c-bg: #ffffff;
    --c-bg-alt: #f1f5f9;
    --c-bg-dark: #0b0e1a;
    --c-border: #e2e8f0;
    --c-white: #ffffff;
    --c-green: #10b981;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(99,102,241,0.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    z-index: 1000;
    transition: all var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
    background: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    color: var(--c-text);
}

.logo-icon {
    font-size: 28px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav-link {
    text-decoration: none;
    color: var(--c-text);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 8px 0;
    transition: color var(--transition);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-purple));
    border-radius: 2px;
}

.nav-cta { display: flex; align-items: center; }

.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(--c-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: radial-gradient(ellipse at 50% 0%, #1e1b4b 0%, #0b0e1a 50%, #000000 100%);
    color: #fff;
    padding: 120px 0 80px;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.08) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 75%);
}

.hero-bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.35), rgba(168, 85, 247, 0.15), transparent);
    border-radius: 50%;
    filter: blur(80px);
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
    50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 100px;
    font-size: 13px;
    color: var(--c-primary-light);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--c-green);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f0abfc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 12px;
    font-weight: 500;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 40px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
    color: #fff;
    text-decoration: none;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    background: transparent;
    color: #fff;
    text-decoration: none;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-large { padding: 16px 36px; font-size: 17px; }

.btn-block { width: 100%; }

.hero-platforms {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.platform-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.platform-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.tag {
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 100px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
}

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

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--c-primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 800;
    color: var(--c-text);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 17px;
    color: var(--c-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 核心优势 ===== */
.advantage {
    background: var(--c-bg-alt);
}

.card-grid {
    display: grid;
    gap: 24px;
}

.three-col {
    grid-template-columns: repeat(3, 1fr);
}

.feature-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before { transform: scaleX(1); }

.highlight-card {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff;
}

.highlight-card h3,
.highlight-card p { color: #fff; }

.highlight-card .card-icon svg { stroke: #fff; }

.card-icon {
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--c-text);
}

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

/* ===== 服务 ===== */
.service { background: #fff; }

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    padding: 40px 32px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    position: relative;
    background: #fff;
}

.service-card:hover {
    border-color: var(--c-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--c-primary);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 16px;
}

.service-icon {
    font-size: 40px;
    margin-bottom: 20px;
    display: block;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--c-text);
}

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

/* ===== 产品亮点 ===== */
.highlight { background: var(--c-bg-alt); }

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.highlight-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    transition: all var(--transition);
}

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

.hl-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--c-primary);
}

.highlight-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--c-text);
}

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

/* ===== 数据统计 ===== */
.stats-section {
    background: linear-gradient(135deg, #0b0e1a, #1e1b4b);
    color: #fff;
}

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

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 4px;
}

.stat-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.stat-number-big {
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

/* ===== 新闻 ===== */
.news { background: #fff; }

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

.news-card {
    display: flex;
    gap: 24px;
    padding: 32px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.news-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--c-primary-light);
}

.news-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 60px;
}

.news-date .day {
    font-size: 36px;
    font-weight: 800;
    color: var(--c-primary);
    line-height: 1;
}

.news-date .month {
    font-size: 13px;
    color: var(--c-text-light);
    margin-top: 4px;
}

.news-content { flex: 1; }

.news-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--c-primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-card h3 a {
    color: var(--c-text);
    text-decoration: none;
    transition: color var(--transition);
}

.news-card h3 a:hover { color: var(--c-primary); }

.news-card p {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.6;
}

.news-more {
    text-align: center;
    margin-top: 48px;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 12px 32px;
    border: 1px solid var(--c-primary);
    color: var(--c-primary);
    text-decoration: none;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition);
}

.btn-outline:hover {
    background: var(--c-primary);
    color: #fff;
}

/* ===== 客户心声 ===== */
.testimonials { background: var(--c-bg-alt); }

.partner-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.partner-stat-item { text-align: center; }

/* ===== 联系我们 ===== */
.contact { background: linear-gradient(135deg, #0b0e1a, #1e1b4b); color: #fff; }

.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info .section-tag { color: var(--c-primary-light); }

.contact-info .section-title { color: #fff; }

.contact-desc {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 20px;
}

.method-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary-light);
    flex-shrink: 0;
}

.method-label {
    display: block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.method-value {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    transition: color var(--transition);
}

.method-value:hover { color: var(--c-primary-light); }

.contact-form-wrap {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: 40px;
    backdrop-filter: blur(20px);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
}

.form-group { margin-bottom: 20px; }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 15px;
    font-family: inherit;
    transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--c-primary);
    background: rgba(255, 255, 255, 0.12);
}

.form-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
    margin-top: 16px;
}

/* ===== 页脚 ===== */
.footer {
    background: #050816;
    color: rgba(255, 255, 255, 0.6);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo { margin-bottom: 16px; }

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    max-width: 400px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}

.footer-col ul { list-style: none; }

.footer-col li { margin-bottom: 10px; }

.footer-col a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
}

/* ===== 页面头部（内页通用） ===== */
.page-header {
    padding: 160px 0 80px;
    background: radial-gradient(ellipse at 50% 0%, #1e1b4b 0%, #0b0e1a 60%, #000000 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.08) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, #000 30%, transparent 75%);
}

.page-header-content { position: relative; z-index: 2; }

.page-header h1 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.page-header p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.6);
    max-width: 560px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 20px;
}

.breadcrumb a {
    color: var(--c-primary-light);
    text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }

/* ===== 新闻列表页 ===== */
.news-list-page { background: var(--c-bg-alt); padding: 80px 0 100px; }

.news-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.news-list-item {
    display: flex;
    gap: 28px;
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    transition: all var(--transition);
    text-decoration: none;
    color: inherit;
}

.news-list-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--c-primary-light);
    transform: translateY(-2px);
}

.news-list-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 72px;
    padding-right: 28px;
    border-right: 1px solid var(--c-border);
}

.news-list-date .day {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.news-list-date .month {
    font-size: 13px;
    color: var(--c-text-light);
    margin-top: 6px;
}

.news-list-content { flex: 1; }

.news-list-content .news-tag { margin-bottom: 10px; }

.news-list-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 10px;
    line-height: 1.4;
    transition: color var(--transition);
}

.news-list-item:hover .news-list-content h3 { color: var(--c-primary); }

.news-list-content p {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-list-more {
    font-size: 14px;
    color: var(--c-primary);
    font-weight: 600;
    margin-top: 10px;
    display: inline-block;
}

/* ===== 文章详情页 ===== */
.article-page { background: var(--c-bg-alt); padding: 60px 0 100px; }

.article-container {
    max-width: 820px;
    margin: 0 auto;
}

.article-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 60px;
    border: 1px solid var(--c-border);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--c-border);
    font-size: 14px;
    color: var(--c-text-light);
}

.article-meta .news-tag { margin-bottom: 0; }

.article-title {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 800;
    color: var(--c-text);
    line-height: 1.3;
    margin-bottom: 32px;
    letter-spacing: -0.01em;
}

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

.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 40px 0 16px;
    color: var(--c-text);
    padding-left: 14px;
    border-left: 4px solid var(--c-primary);
}

.article-body h3 {
    font-size: 19px;
    font-weight: 700;
    margin: 32px 0 12px;
    color: var(--c-text);
}

.article-body p { margin-bottom: 18px; }

.article-body ul,
.article-body ol {
    margin: 0 0 18px 24px;
}

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

.article-body blockquote {
    margin: 24px 0;
    padding: 20px 24px;
    background: rgba(99, 102, 241, 0.06);
    border-left: 4px solid var(--c-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--c-text-light);
    font-style: italic;
}

.article-body strong { color: var(--c-text); }

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article-body th,
.article-body td {
    padding: 12px 16px;
    border: 1px solid var(--c-border);
    text-align: left;
}

.article-body th {
    background: var(--c-bg-alt);
    font-weight: 600;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--c-border);
}

.article-nav a {
    flex: 1;
    padding: 20px 24px;
    background: var(--c-bg-alt);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--c-text);
    transition: all var(--transition);
}

.article-nav a:hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--c-primary);
}

.article-nav .nav-label {
    display: block;
    font-size: 12px;
    color: var(--c-text-light);
    margin-bottom: 6px;
}

.article-nav .nav-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
}

.article-nav .next { text-align: right; }

.article-back {
    text-align: center;
    margin-top: 40px;
}

/* ===== 关于我们页 ===== */
.about-section { padding: 80px 0; background: #fff; }

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--c-text);
}

.about-text p {
    font-size: 16px;
    color: var(--c-text-light);
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-visual {
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    padding: 48px;
    color: #fff;
}

.about-visual .big-number {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, #c7d2fe, #e9d5ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-visual .label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 28px;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.value-card {
    text-align: center;
    padding: 40px 24px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

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

.value-card .value-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.value-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.value-card p {
    font-size: 14px;
    color: var(--c-text-light);
}

/* ===== 联系页 ===== */
.contact-page-section { padding: 80px 0 100px; background: var(--c-bg-alt); }

.contact-page-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info-card {
    background: linear-gradient(135deg, #0b0e1a, #1e1b4b);
    border-radius: var(--radius-xl);
    padding: 48px;
    color: #fff;
}

.contact-info-card h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 12px;
}

.contact-info-card > p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 36px;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-info-item .method-icon {
    width: 48px;
    height: 48px;
}

.contact-info-item .method-value { font-size: 18px; }

.contact-form-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 48px;
    border: 1px solid var(--c-border);
}

.contact-form-card h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--c-text);
}

.contact-form-card .form-group input,
.contact-form-card .form-group textarea {
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border);
    color: var(--c-text);
}

.contact-form-card .form-group input::placeholder,
.contact-form-card .form-group textarea::placeholder {
    color: var(--c-text-light);
}

.contact-form-card .form-group input:focus,
.contact-form-card .form-group textarea:focus {
    border-color: var(--c-primary);
    background: #fff;
}

.contact-form-card .form-note { color: var(--c-text-light); }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .nav-menu { display: none; }
    .menu-toggle { display: flex; }
    .three-col,
    .highlight-grid,
    .service-grid,
    .stats-grid,
    .partner-stats,
    .footer-content,
    .contact-wrap { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .partner-stat-item { margin-bottom: 20px; }
    .about-grid,
    .value-grid,
    .contact-page-grid { grid-template-columns: 1fr; }
    .article-card { padding: 32px 24px; }
    .news-list-item { flex-direction: column; gap: 16px; }
    .news-list-date { flex-direction: row; align-items: baseline; gap: 8px; border-right: none; padding-right: 0; border-bottom: 1px solid var(--c-border); padding-bottom: 12px; }
    .article-nav { flex-direction: column; }
    .article-nav .next { text-align: left; }
}

@media (max-width: 600px) {
    .hero { padding: 100px 0 60px; }
    .section { padding: 60px 0; }
    .feature-card,
    .service-card,
    .highlight-card,
    .news-card { padding: 24px 20px; }
}