/* ============================================
   海南象限互联 AI官网 - 主样式表
   深色科技风 · 响应式设计
   ============================================ */

/* -------- CSS Reset -------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background: #0a0e1a;
    color: #e4e6eb;
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: #6c5ce7; text-decoration: none; transition: color 0.2s; }
a:hover { color: #8b7cf7; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* -------- 容器 -------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* -------- 导航栏 -------- */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: background 0.3s, box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 4px 30px rgba(108, 92, 231, 0.15); }
.header-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.site-logo { display: flex; align-items: center; gap: 10px; }
.logo-text { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.logo-brand { background: linear-gradient(135deg, #6c5ce7, #a29bfe); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.logo-sub { color: #e4e6eb; }
.logo-tag { font-size: 11px; color: #8b7cf7; padding: 3px 8px; background: rgba(108,92,231,0.15); border-radius: 4px; }

.site-nav .nav-list { display: flex; align-items: center; gap: 4px; list-style: none; }
.site-nav a {
    padding: 10px 16px; color: #b0b8c8; font-size: 14.5px; font-weight: 500;
    border-radius: 6px; transition: all 0.2s;
}
.site-nav a:hover { color: #fff; background: rgba(255,255,255,0.05); }
.site-nav a.active { color: #fff; background: rgba(108,92,231,0.15); }
.site-nav .btn-contact { background: linear-gradient(135deg, #6c5ce7, #5a4bd6) !important; color: #fff !important; }
.site-nav .btn-contact:hover { box-shadow: 0 4px 20px rgba(108,92,231,0.4); }

/* 子菜单 */
.site-nav .has-submenu { position: relative; }
.site-nav .submenu {
    display: none; position: absolute; top: 100%; left: 0; min-width: 180px;
    background: #131828; border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px; padding: 8px; margin-top: 4px; list-style: none;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.site-nav .has-submenu:hover .submenu { display: block; }
.site-nav .submenu a { display: block; padding: 8px 14px; font-size: 14px; color: #b0b8c8; }
.site-nav .submenu a:hover { background: rgba(108,92,231,0.1); color: #fff; }

/* 移动端汉堡 */
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: #e4e6eb; border-radius: 2px; transition: 0.3s; }

/* -------- Hero 区块 -------- */
.site-main { padding-top: 64px; }
.hero-section {
    position: relative; min-height: 640px; display: flex; align-items: center; overflow: hidden;
    padding: 80px 0;
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(ellipse at top, rgba(108,92,231,0.25) 0%, transparent 50%),
                radial-gradient(ellipse at bottom right, rgba(0,184,148,0.15) 0%, transparent 40%),
                linear-gradient(180deg, #0a0e1a 0%, #0f1525 50%, #0a0e1a 100%);
}
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(108,92,231,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108,92,231,0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(100px); opacity: 0.6; }
.hero-glow.glow-1 { width: 500px; height: 500px; background: #6c5ce7; top: 10%; left: -100px; }
.hero-glow.glow-2 { width: 400px; height: 400px; background: #00b894; bottom: -100px; right: -50px; opacity: 0.3; }

.hero-content { position: relative; z-index: 1; width: 100%; }
.hero-title {
    font-size: 56px; font-weight: 800; line-height: 1.2; margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero-title .title-line { display: block; }
.hero-title .highlight { background: linear-gradient(135deg, #6c5ce7, #00b894); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-title .underline { position: relative; }
.hero-title .underline::after {
    content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, #6c5ce7, #00b894); border-radius: 2px;
}
.hero-subtitle { font-size: 19px; color: #b0b8c8; margin-bottom: 36px; max-width: 680px; }

.hero-cta { display: flex; gap: 16px; margin-bottom: 48px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; }
.stat-item { text-align: center; }
.stat-item strong { display: block; font-size: 32px; font-weight: 700; background: linear-gradient(135deg, #6c5ce7, #00b894); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-item span { font-size: 13px; color: #888; }

/* -------- 按钮 -------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; font-size: 15px; font-weight: 600;
    border-radius: 8px; cursor: pointer; transition: all 0.25s;
    text-decoration: none; border: 1px solid transparent;
}
.btn-primary { background: linear-gradient(135deg, #6c5ce7, #5a4bd6); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(108,92,231,0.4); color: #fff; }
.btn-outline { background: transparent; border-color: rgba(255,255,255,0.2); color: #e4e6eb; }
.btn-outline:hover { border-color: #6c5ce7; color: #8b7cf7; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-danger { background: #e74c3c; color: #fff; }
.btn-danger:hover { background: #c0392b; color: #fff; }
.btn-block { display: block; width: 100%; text-align: center; justify-content: center; }

/* -------- 通用区块 -------- */
.section-header { margin-bottom: 48px; }
.section-header.text-center { text-align: center; }
.section-tag {
    display: inline-block; padding: 6px 16px; background: rgba(108,92,231,0.15);
    border: 1px solid rgba(108,92,231,0.3); border-radius: 20px;
    font-size: 13px; color: #a29bfe; font-weight: 500; margin-bottom: 16px;
}
.section-header h2 { font-size: 36px; font-weight: 700; margin-bottom: 12px; }
.section-sub { color: #888; font-size: 16px; max-width: 640px; }
.section-header.text-center .section-sub { margin: 0 auto; }
.section-more { margin-left: auto; color: #8b7cf7; font-size: 14px; font-weight: 500; }

/* -------- 功能卡片网格 -------- */
.features-section { padding: 80px 0; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.feature-card {
    padding: 32px; background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06); border-radius: 12px;
    transition: all 0.3s;
}
.feature-card:hover { border-color: rgba(108,92,231,0.5); background: rgba(108,92,231,0.05); transform: translateY(-4px); }
.feature-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: rgba(108,92,231,0.15); border-radius: 12px; color: #a29bfe; margin-bottom: 20px; }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { color: #888; font-size: 14.5px; line-height: 1.7; }
.features-cta { text-align: center; margin-top: 40px; }

/* -------- GEO对比 -------- */
.geo-intro { padding: 80px 0; background: #0d1220; }
.geo-compare { display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center; margin: 40px 0; }
.compare-item { padding: 28px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 12px; }
.compare-item.highlight { border-color: rgba(108,92,231,0.5); background: rgba(108,92,231,0.08); }
.compare-label { font-size: 18px; font-weight: 700; margin-bottom: 14px; }
.compare-item.highlight .compare-label { color: #8b7cf7; }
.compare-item ul { list-style: none; }
.compare-item li { padding: 6px 0; padding-left: 20px; position: relative; color: #b0b8c8; font-size: 14.5px; }
.compare-item li::before { content: '•'; position: absolute; left: 0; color: #6c5ce7; }
.compare-item.highlight li::before { color: #00b894; }
.compare-arrow { font-size: 16px; color: #666; font-weight: 700; }
.geo-problem { margin-top: 40px; padding: 28px; background: rgba(0,184,148,0.08); border: 1px solid rgba(0,184,148,0.3); border-radius: 12px; }
.geo-problem h3 { color: #00b894; margin-bottom: 10px; }
.geo-problem p strong { color: #fff; }

/* -------- AI & Project & Why区块 -------- */
.ai-section, .projects-section, .why-section, .platforms-section, .news-section { padding: 80px 0; }
.ai-section { background: #0d1220; }
.ai-grid, .projects-grid, .why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

.ai-card, .project-card, .why-card {
    padding: 32px; background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.06); border-radius: 12px;
    transition: all 0.3s;
}
.ai-card:hover, .project-card:hover, .why-card:hover { transform: translateY(-4px); border-color: rgba(108,92,231,0.4); }
.ai-icon { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(108,92,231,0.2), rgba(0,184,148,0.2)); border-radius: 10px; color: #a29bfe; margin-bottom: 16px; }
.ai-card h3, .project-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.ai-card p, .project-card p { color: #888; font-size: 14.5px; }
.card-link { display: inline-block; margin-top: 14px; color: #8b7cf7; font-size: 13px; font-weight: 500; }
.card-link:hover { color: #a29bfe; }

/* 为什么选择我们 */
.why-num {
    display: inline-block; width: 44px; height: 44px; line-height: 44px;
    text-align: center; background: linear-gradient(135deg, #6c5ce7, #00b894);
    border-radius: 50%; font-weight: 700; font-size: 14px; margin-bottom: 16px;
}
.why-quote { margin-top: 48px; text-align: center; }
.why-quote blockquote {
    font-size: 28px; font-weight: 700; line-height: 1.5; color: #e4e6eb;
    border-left: 4px solid #6c5ce7; padding-left: 24px; display: inline-block; text-align: left;
}
.why-quote blockquote strong { background: linear-gradient(135deg, #6c5ce7, #00b894); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.why-quote blockquote span { display: block; font-size: 15px; font-weight: 400; color: #888; margin-top: 10px; }

/* AI平台 */
.platforms-section { background: #0d1220; }
.platforms-grid { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.platform-item {
    padding: 16px 28px; background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08); border-radius: 10px;
    font-weight: 600; font-size: 15px; transition: all 0.2s;
}
.platform-item:hover { border-color: #6c5ce7; background: rgba(108,92,231,0.1); transform: translateY(-2px); }
.platform-item.big { padding: 22px 36px; font-size: 17px; min-width: 140px; text-align: center; }
.platform-item.big small { display: block; font-weight: 400; font-size: 12px; color: #666; margin-top: 4px; }

/* CTA区块 */
.cta-section { position: relative; padding: 80px 0; text-align: center; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(108,92,231,0.2), rgba(0,184,148,0.15)); }
.cta-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.cta-content h2 { font-size: 36px; font-weight: 700; margin-bottom: 12px; }
.cta-content p { color: #b0b8c8; font-size: 17px; margin-bottom: 32px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* -------- 页脚 -------- */
.site-footer { background: #050810; border-top: 1px solid rgba(255,255,255,0.05); padding: 60px 0 30px; }
.footer-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { font-size: 22px; font-weight: 700; margin-bottom: 14px; }
.footer-desc { color: #888; font-size: 14px; margin-bottom: 20px; }
.footer-contact p { font-size: 14px; color: #888; margin-bottom: 6px; }
.contact-label { color: #666; margin-right: 4px; }
.footer-col h4 { font-size: 15px; font-weight: 600; margin-bottom: 18px; color: #e4e6eb; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #888; font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: #8b7cf7; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.copyright { color: #666; font-size: 13px; }
.beian { color: #666; font-size: 13px; }
.beian a { color: #666; }
.beian a:hover { color: #888; }

/* 返回顶部 */
.back-to-top {
    position: fixed; bottom: 30px; right: 30px; z-index: 999;
    width: 44px; height: 44px; border-radius: 50%;
    background: linear-gradient(135deg, #6c5ce7, #5a4bd6);
    color: #fff; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(108,92,231,0.4);
    opacity: 0; visibility: hidden; transition: all 0.3s;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); }

/* -------- 面包屑 -------- */
.breadcrumb { max-width: 1200px; margin: 0 auto; padding: 100px 24px 0; font-size: 13px; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.breadcrumb li a { color: #8b7cf7; }
.breadcrumb li + li::before { content: '›'; color: #555; margin-right: 8px; }
.breadcrumb li.active { color: #888; }

/* -------- 子页面Hero -------- */
.page-hero { padding: 80px 0 40px; text-align: center; }
.page-hero h1 { font-size: 44px; font-weight: 800; line-height: 1.3; margin-top: 12px; }
.page-hero h1 small { display: block; font-size: 22px; font-weight: 400; color: #888; margin-top: 12px; }
.page-tag {
    display: inline-block; padding: 6px 18px; background: rgba(108,92,231,0.15);
    border: 1px solid rgba(108,92,231,0.3); border-radius: 20px;
    font-size: 13px; color: #a29bfe; font-weight: 500;
}
.page-lead { max-width: 640px; margin: 20px auto 0; color: #b0b8c8; font-size: 16px; }

/* -------- 通用内容区块 -------- */
.content-section { padding: 60px 0; }
.content-section.alt { background: #0d1220; }
.content-h2 { font-size: 28px; font-weight: 700; margin-bottom: 24px; }
.section-lead { max-width: 720px; margin: -8px 0 28px; color: #b0b8c8; font-size: 15.5px; }
.content-section p { margin-bottom: 16px; color: #c4c8d4; }
.content-section h3 { font-size: 20px; font-weight: 600; margin: 24px 0 12px; }
.content-section strong { color: #fff; }

.compare-box, .feature-list, .scenario-list, .flow-list, .benefit-list, .check-list, .rag-flow, .wf-capability { margin: 20px 0; }
.compare-col { flex: 1; padding: 24px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 10px; }
.compare-col.highlight { border-color: rgba(108,92,231,0.4); background: rgba(108,92,231,0.06); }
.compare-box { display: flex; gap: 24px; flex-wrap: wrap; }
.compare-box > * { flex: 1; min-width: 280px; }

.feature-list, .scenario-list, .benefit-list, .check-list, .flow-list { list-style: none; }

.feature-list li, .scenario-list li, .benefit-list li, .check-list li {
    padding: 8px 0; padding-left: 24px; position: relative; color: #c4c8d4;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.feature-list li::before, .scenario-list li::before {
    content: ''; position: absolute; left: 6px; top: 18px; width: 8px; height: 8px;
    background: #6c5ce7; border-radius: 50%;
}
.flow-list { counter-reset: flow; }
.flow-list li { padding-left: 40px; position: relative; counter-increment: flow; }
.flow-list li::before {
    content: counter(flow); position: absolute; left: 0; top: 8px;
    width: 28px; height: 28px; line-height: 28px; text-align: center;
    background: rgba(108,92,231,0.2); border-radius: 50%; font-weight: 700; font-size: 13px;
}

/* 服务块布局 */
.service-block { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.service-block.reverse .service-text { order: 2; }
.service-block.reverse .service-visual { order: 1; }

.service-intro { font-size: 17px; color: #b0b8c8; margin-bottom: 20px; }
.service-visual { position: sticky; top: 100px; }
.visual-card {
    padding: 28px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
}
.visual-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: #a29bfe; }

.agent-capability { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.agent-capability span { padding: 6px 12px; background: rgba(108,92,231,0.15); border-radius: 20px; font-size: 13px; color: #c4c8d4; }
.agent-capability .arrow { background: none; color: #6c5ce7; padding: 0; }

.rag-flow { list-style: none; }
.rag-flow li { padding: 12px 16px; background: rgba(255,255,255,0.03); margin-bottom: 8px; border-radius: 6px; }
.rag-benefit { margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.08); }

.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare-table th, .compare-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid rgba(255,255,255,0.06); }
.compare-table th { background: rgba(108,92,231,0.1); font-weight: 600; }

.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tech-tags span { padding: 6px 14px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; font-size: 13px; color: #b0b8c8; }

/* FAQ */
.faq-quick-nav { padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.quick-nav-inner { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; color: #666; font-size: 13px; }
.quick-nav-inner a { padding: 6px 14px; background: rgba(108,92,231,0.1); border-radius: 20px; font-size: 13px; }

.faq-list { margin-top: 12px; }
.faq-item {
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: background 0.2s;
}
.faq-item:first-child { border-top: 1px solid rgba(255,255,255,0.06); }
.faq-item summary {
    padding: 20px 0; cursor: pointer; list-style: none;
    display: flex; align-items: center; gap: 12px; font-weight: 500; font-size: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; margin-left: auto; color: #6c5ce7; font-size: 24px; font-weight: 300; transition: transform 0.3s; }
.faq-item[open] summary::after { content: '−'; }
.faq-q-num { color: #6c5ce7; font-weight: 700; font-size: 14px; }
.faq-answer { padding: 0 0 20px 30px; color: #b0b8c8; line-height: 1.8; }
.faq-answer p { margin-bottom: 10px; }
.faq-answer ul, .faq-answer ol { padding-left: 20px; margin-bottom: 10px; }
.faq-more { margin-top: 20px; text-align: center; }
.faq-contact { padding: 60px 0; }
.faq-contact-actions { display: flex; gap: 16px; justify-content: center; margin-top: 24px; flex-wrap: wrap; }

/* 关于我们 */
.about-block { display: grid; grid-template-columns: 2fr 1fr; gap: 48px; align-items: start; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.about-stat {
    padding: 24px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px; text-align: center;
}
.about-stat strong { display: block; font-size: 24px; font-weight: 700; background: linear-gradient(135deg, #6c5ce7, #00b894); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.about-stat span { font-size: 13px; color: #888; margin-top: 6px; display: block; }

.mission-grid, .value-grid, .biz-grid, .client-grid { display: grid; gap: 20px; }
.mission-grid { grid-template-columns: 1fr 1fr; }
.value-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.biz-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.client-grid { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }

.mission-card, .value-card, .biz-main {
    padding: 28px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 12px;
}
.mission-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.value-card .value-num {
    display: inline-block; width: 36px; height: 36px; line-height: 36px; text-align: center;
    background: rgba(108,92,231,0.15); border-radius: 8px; font-weight: 700; font-size: 13px; color: #8b7cf7;
    margin-bottom: 14px;
}
.value-card h3 { font-size: 16px; margin-bottom: 8px; }
.value-card p { color: #888; font-size: 14px; }

.biz-main h3 { font-size: 20px; color: #a29bfe; margin-bottom: 10px; }
.biz-main p { color: #b0b8c8; font-size: 14px; margin-bottom: 14px; }
.biz-sub { display: flex; gap: 8px; flex-wrap: wrap; }
.biz-sub span { padding: 4px 10px; background: rgba(255,255,255,0.05); border-radius: 14px; font-size: 12px; color: #888; }

.client-item { padding: 20px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); border-radius: 10px; text-align: center; color: #888; }

.highlight-list { list-style: none; margin: 16px 0; }
.highlight-list li { padding: 10px 0 10px 28px; position: relative; }
.highlight-list li::before { content: '✦'; position: absolute; left: 0; color: #6c5ce7; font-weight: 700; }

/* 联系我们 */
.contact-info-section { padding: 40px 0 20px; }
.contact-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.contact-info-card {
    padding: 32px 28px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px; text-align: center;
}
.contact-info-card:hover { border-color: rgba(108,92,231,0.4); }
.ci-icon { font-size: 36px; margin-bottom: 12px; }
.contact-info-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.contact-info-card a { font-size: 17px; font-weight: 600; color: #8b7cf7; }
.ci-hint { color: #666; font-size: 12px; margin-top: 8px; }

.contact-form-section { padding: 20px 0 80px; }
.form-wrapper { max-width: 720px; margin: 0 auto; padding: 40px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 16px; }
.form-header { margin-bottom: 32px; }
.form-header h2 { font-size: 24px; font-weight: 700; }
.form-header p { color: #888; font-size: 14px; margin-top: 4px; }
.contact-form .form-row { display: flex; gap: 16px; }
.contact-form .form-row > * { flex: 1; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 14px; color: #b0b8c8; font-weight: 500; }
.form-group label .required { color: #e74c3c; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 12px 14px; background: #0a0e1a; border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px; color: #e4e6eb; font-size: 14px; transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: #6c5ce7; }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form-submit { margin-top: 24px; display: flex; gap: 16px; align-items: center; }
.form-tip { font-size: 12px; color: #666; }
.form-success, .form-error { padding: 24px; border-radius: 10px; text-align: center; margin-bottom: 20px; }
.form-success { background: rgba(0,184,148,0.1); border: 1px solid rgba(0,184,148,0.3); }
.form-success h3 { color: #00b894; margin: 14px 0 6px; font-size: 18px; }
.form-error { background: rgba(231,76,60,0.1); border: 1px solid rgba(231,76,60,0.3); color: #ff6b6b; }

/* 面包屑（页面顶部） */
.breadcrumb-section { padding: 20px 0 0; font-size: 13px; }
.breadcrumb-section ol { list-style: none; display: flex; gap: 8px; align-items: center; }
.breadcrumb-section li::after { content: '›'; margin-left: 8px; color: #555; }
.breadcrumb-section li:last-child::after { content: ''; }

/* -------- 资讯列表 -------- */
.news-list-section { padding: 40px 0 80px; }
.news-list-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 40px; }
.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-item { padding: 28px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 12px; transition: all 0.2s; }
.news-item:hover { border-color: rgba(108,92,231,0.4); transform: translateY(-2px); }
.news-item-meta { display: flex; gap: 12px; align-items: center; font-size: 13px; color: #888; margin-bottom: 10px; }
.ni-cat, .news-cat { padding: 3px 10px; background: rgba(108,92,231,0.15); border-radius: 4px; color: #a29bfe; font-size: 12px; }
.ni-top { background: #e74c3c; color: #fff; padding: 3px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.news-item-title { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.news-item-title a:hover { color: #a29bfe; }
.news-item-summary { color: #b0b8c8; font-size: 14px; }
.news-item-more { color: #8b7cf7; font-size: 13px; font-weight: 500; margin-top: 12px; display: inline-block; }

.news-sidebar .sidebar-box {
    padding: 24px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 12px; margin-bottom: 20px;
}
.news-sidebar h3 { font-size: 16px; font-weight: 600; margin-bottom: 14px; color: #a29bfe; }
.news-sidebar ul { list-style: none; }
.news-sidebar li { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
.news-sidebar li:last-child { border-bottom: none; }
.news-sidebar a { color: #b0b8c8; font-size: 14px; }
.news-sidebar a:hover { color: #8b7cf7; }
.cta-box h3 { color: #e4e6eb !important; }
.cta-box p { color: #888; font-size: 14px; margin-bottom: 14px; }

/* -------- 资讯详情 -------- */
.news-detail { padding: 40px 0 60px; }
.detail-header { margin-bottom: 32px; }
.detail-cat { display: inline-block; padding: 4px 12px; background: rgba(108,92,231,0.15); border-radius: 4px; color: #a29bfe; font-size: 12px; margin-bottom: 12px; }
.detail-title { font-size: 36px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.detail-meta { display: flex; gap: 20px; color: #888; font-size: 14px; flex-wrap: wrap; }
.detail-summary { padding: 20px; background: rgba(108,92,231,0.08); border-left: 3px solid #6c5ce7; border-radius: 4px; color: #b0b8c8; margin-bottom: 32px; }
.detail-content { font-size: 16px; line-height: 1.9; color: #d0d4dc; }
.detail-content h2 { font-size: 24px; font-weight: 700; margin: 36px 0 16px; }
.detail-content h3 { font-size: 19px; font-weight: 600; margin: 24px 0 12px; }
.detail-content p { margin-bottom: 16px; }
.detail-content ul, .detail-content ol { padding-left: 24px; margin-bottom: 16px; }
.detail-content li { margin-bottom: 6px; }
.detail-content strong { color: #fff; }
.detail-content a { color: #a29bfe; text-decoration: underline; }
.detail-content table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: 15px; }
.detail-content th, .detail-content td { border: 1px solid rgba(255,255,255,0.12); padding: 10px 12px; text-align: left; vertical-align: top; word-break: break-word; }
.detail-content th { background: rgba(255,255,255,0.05); color: #fff; font-weight: 600; }
.detail-content blockquote { margin: 16px 0 24px; padding: 14px 18px; border-left: 3px solid #6c5ce7; background: rgba(108,92,231,0.08); color: #b0b8c8; border-radius: 4px; }

.detail-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.06); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.share-box { color: #888; font-size: 14px; display: flex; gap: 12px; align-items: center; }
.share-box a { padding: 6px 14px; background: rgba(255,255,255,0.05); border-radius: 4px; font-size: 13px; }
.cta-box p { font-size: 14px; color: #888; }

.related-section { padding: 40px 0 80px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.related-item { padding: 20px; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 10px; }
.related-item h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.related-item time { font-size: 12px; color: #666; }

/* 404 */
.page-404 { padding: 120px 0; text-align: center; }
.page-404 h1 { font-size: 120px; font-weight: 800; background: linear-gradient(135deg, #6c5ce7, #00b894); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.page-404 p { color: #888; margin-bottom: 24px; font-size: 16px; }

/* sr-only */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.empty-state { text-align: center; padding: 60px 20px; color: #666; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
    .hero-title { font-size: 44px; }
    .page-hero h1 { font-size: 36px; }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .service-block, .about-block { grid-template-columns: 1fr; }
    .service-block.reverse .service-text { order: 1; }
    .service-block.reverse .service-visual { order: 2; }
    .news-list-wrap { grid-template-columns: 1fr; }
    .service-visual { position: static; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .site-nav {
        display: none; position: fixed; top: 64px; left: 0; right: 0;
        background: #131828; border-bottom: 1px solid rgba(255,255,255,0.1);
        padding: 20px; max-height: calc(100vh - 64px); overflow-y: auto;
    }
    .site-nav.open { display: block; }
    .site-nav .nav-list { flex-direction: column; gap: 4px; }
    .site-nav .nav-list li { width: 100%; }
    .site-nav a { display: block; padding: 12px 16px; }
    .site-nav .has-submenu:hover .submenu { display: none; }
    .site-nav .submenu { position: static; box-shadow: none; border: none; background: #0a0e1a; padding: 4px; margin-top: 8px; }

    .hero-title { font-size: 34px; }
    .hero-subtitle { font-size: 15px; }
    .hero-stats { gap: 24px; }
    .stat-item strong { font-size: 24px; }
    .hero-section { min-height: auto; padding: 60px 0; }
    .section-header h2 { font-size: 28px; }
    .page-hero h1 { font-size: 28px; }
    .page-hero h1 small { font-size: 18px; }

    .geo-compare { grid-template-columns: 1fr; }
    .compare-arrow { transform: rotate(90deg); }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; text-align: center; }

    .service-block, .about-block, .mission-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }

    .contact-form .form-row { flex-direction: column; gap: 0; }
    .form-wrapper { padding: 24px; }

    .form-submit { flex-direction: column; }
    .form-submit .btn { width: 100%; }

    .news-list-section, .content-section, .ai-section, .projects-section, .why-section, .platforms-section, .cta-section, .geo-intro, .features-section { padding: 50px 0; }

    .detail-title { font-size: 26px; }
    .detail-content h2 { font-size: 20px; }
    .detail-content table { display: block; overflow-x: auto; border-collapse: separate; }
    .detail-content th, .detail-content td { padding: 8px 10px; font-size: 14px; }

    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 28px; }
    .section-header h2 { font-size: 24px; }
    .page-hero h1 { font-size: 24px; }
    .page-hero h1 small { font-size: 16px; }
    .footer-grid { grid-template-columns: 1fr; }
    .contact-info-grid { grid-template-columns: 1fr; }
}

/* -------- 分页 -------- */
.pagination { margin-top: 30px; text-align: center; }
.pagination-list { list-style: none; display: inline-flex; gap: 6px; flex-wrap: wrap; }
.pagination-list a, .pagination-list span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 40px; height: 40px; padding: 0 12px;
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 6px; font-size: 14px; color: #b0b8c8;
}
.pagination-list a:hover { background: rgba(108,92,231,0.15); border-color: #6c5ce7; color: #fff; }
.pagination-list .active span { background: #6c5ce7; border-color: #6c5ce7; color: #fff; }
.pagination-list .ellipsis { color: #555; }

/* -------- 富文本 -------- */
.rich-content { font-family: 'SF Mono', 'Consolas', monospace; font-size: 14px; line-height: 1.7; }