/* ========== Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", "Segoe UI", sans-serif; font-weight: 400; color: var(--text-1); line-height: 1.6; background: #fff; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
h1, h2, h3, h4, h5, h6, strong, b, th { font-weight: 500; }
a { text-decoration: none; color: inherit; transition: color .3s; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1920px; margin: 0 auto; padding: 0 240px; }

/* ========== Design Tokens (Light Mode) ========== */
:root {
  /* Primary Scale */
  --primary-1: #e6f4ff;
  --primary-2: #bae0ff;
  --primary-3: #91caff;
  --primary-4: #69b1ff;
  --primary-5: #4096ff;
  --primary-6: #1677ff;
  --primary-7: #0958d9;
  --primary-8: #003eb3;
  --primary-9: #002c8c;
  --primary-10: #001d66;
  --primary: var(--primary-6);

  /* Second (Orange Accent) */
  --second-1: #fff7e6;
  --second-2: #ffe4b5;
  --second-3: #ffd18c;
  --second-4: #ffbc63;
  --second-5: #ffa33b;
  --second-6: #ff8913;
  --second-7: #d96704;

  /* Gray Scale */
  --gray-1: #f7f8fa;
  --gray-2: #f2f3f5;
  --gray-3: #e5e6eb;
  --gray-4: #c9cdd4;
  --gray-5: #a9aeb8;
  --gray-6: #86909c;
  --gray-7: #6b7785;
  --gray-8: #4e5969;
  --gray-9: #272e3b;
  --gray-10: #1d2129;

  /* Semantic: Text */
  --text-1: #1d2129; /* gray-10 */
  --text-2: #4e5969; /* gray-8 */
  --text-3: #86909c; /* gray-6 */
  --text-4: #c9cdd4; /* gray-4 */
  --text-white: #ffffff;

  /* Semantic: Fill */
  --fill-1: #f7f8fa; /* gray-1 */
  --fill-2: #f2f3f5; /* gray-2 */
  --fill-3: #e5e6eb; /* gray-3 */
  --fill-4: #c9cdd4; /* gray-4 */

  /* Semantic: Border */
  --border-1: #f2f3f5; /* gray-2 */
  --border-2: #e5e6eb; /* gray-3 */
  --border-3: #c9cdd4; /* gray-4 */
  --border-4: #86909c; /* gray-6 */

  /* White opacity */
  --white-10: rgba(255,255,255,0.1);
  --white-20: rgba(255,255,255,0.2);
  --white-40: rgba(255,255,255,0.4);
  --white-60: rgba(255,255,255,0.6);
  --white-80: rgba(255,255,255,0.8);
  --white-100: #ffffff;

  /* Background */
  --bg-dark: #000d2d;
  --bg-footer: #0f193d;

  /* Shared */
  --radius: 4px;
  --radius-lg: 16px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.1);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
}

/* (container responsive merged into main responsive section below) */

/* ========== Header / Nav ========== */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: var(--white-100); border-bottom: 1px solid var(--border-1); transition: box-shadow .3s; }
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.1); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; max-width: 1920px; padding: 0 240px; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 24px; font-weight: 500; color: var(--text-1); flex-shrink: 0; }
.logo img { height: 36px; width: 36px; object-fit: contain; border-radius: 50%; }
.nav { display: flex; align-items: center; gap: 0; margin-left: 80px; }
.nav-item { position: relative; display: flex; align-items: center; justify-content: center; gap: 4px; height: 64px; padding: 0 20px; font-size: 14px; color: var(--text-1); cursor: pointer; transition: color .2s; border-bottom: 2px solid transparent; }
.nav-item:hover, .nav-item.active { color: var(--text-1); border-bottom-color: var(--primary-6); background: linear-gradient(to bottom, transparent, var(--white-60)); }
.nav-item .arrow { font-size: 10px; margin-left: 2px; transition: transform .3s; }
.nav-item:hover .arrow { transform: rotate(180deg); }
.nav-right { display: flex; align-items: center; margin-left: auto; flex-shrink: 0; }
.btn-nav { display: inline-flex; align-items: center; gap: 8px; padding: 5px 16px; background: var(--primary-6); color: var(--text-white); font-size: 14px; border-radius: 2px; border: none; cursor: pointer; transition: background .2s; }
.btn-nav:hover { background: var(--primary-7); }

/* Mega Menu Dropdown */
.dropdown { position: fixed; top: 64px; left: 0; width: 100%; background: #fff; border-top: 1px solid var(--border-1); box-shadow: 0 12px 48px rgba(0,0,0,.06); padding: 0; opacity: 0; visibility: hidden; transition: opacity .25s ease, transform .25s ease; transform: translateY(-6px); pointer-events: none; z-index: 100; }
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.mega-inner { max-width: 1920px; margin: 0 auto; padding: 48px 240px; display: flex; align-items: stretch; }
.mega-left { flex: 0 0 220px; padding-right: 48px; display: flex; flex-direction: column; }
.mega-left h3 { font-size: 28px; font-weight: 600; color: var(--text-1); line-height: 1.3; margin-bottom: 12px; }
.mega-left p { font-size: 14px; color: var(--text-3); line-height: 1.7; margin-bottom: 24px; }
.mega-all { font-size: 14px; color: var(--text-2); display: inline-flex; align-items: center; gap: 4px; margin-top: auto; transition: color .2s, gap .2s; }
.mega-all:hover { color: var(--primary); gap: 8px; }
.mega-divider { width: 1px; background: var(--border-1); flex-shrink: 0; }
.mega-right { flex: 1; display: flex; gap: 48px; padding-left: 48px; }
.mega-col { flex: 1; }
.mega-col h4 { font-size: 14px; font-weight: 600; color: var(--text-1); margin-bottom: 20px; }
.mega-col a { display: block; padding: 8px 0; font-size: 14px; color: var(--text-2); transition: color .2s; }
.mega-col a:hover { color: var(--primary); }

/* Mobile menu toggle */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.menu-toggle span { width: 24px; height: 2px; background: var(--text-1); border-radius: 2px; transition: .3s; }

/* ========== Hero with 3D ========== */
.hero-3d { background: #050a18; position: relative; overflow: hidden; cursor: pointer; height: 640px; margin-top: 64px; }
.hero-3d-canvas-wrap { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.hero-3d-canvas-wrap canvas { display: block; width: 100%; height: 100%; }
.hero-3d-text { position: relative; z-index: 2; height: 100%; max-width: 100%; }

/* 轮播文字 */
.hero-slide { position: absolute; left: 0; top: 0; width: 100%; height: 100%; display: flex; align-items: center; padding-left: max(240px, calc((100% - 1440px) / 2)); padding-right: max(240px, calc((100% - 1440px) / 2)); opacity: 0; transform: translateY(20px); transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1); pointer-events: none; z-index: 1; }
.hero-slide.active { opacity: 1; transform: translateY(0); pointer-events: auto; z-index: 2; }
.hero-slide .hero-slide-inner { max-width: 1223px; display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.hero-slide .hero-tag { display: inline-flex; align-items: center; justify-content: center; padding: 12px; background: var(--white-10); border: 1px solid var(--white-20); font-size: 16px; color: rgba(255,255,255,.85); border-radius: 8px; }
.hero-slide h1 { font-size: 48px; font-weight: 500; line-height: 56px; color: var(--white-100); }
.hero-slide p { font-size: 20px; font-weight: 400; line-height: 28px; color: var(--white-80); max-width: 1223px; }
.hero-slide .hero-btns { display: flex; gap: 24px; align-items: center; }

/* 导航指示器 */
.hero-indicators { position: absolute; bottom: 23px; left: max(240px, calc((100% - 1440px) / 2)); display: flex; gap: 12px; z-index: 3; }
.hero-indicator { width: 32px; height: 3px; background: var(--white-20); cursor: pointer; transition: background 0.5s ease, width 0.5s ease; }
.hero-indicator.active { width: 48px; background: var(--white-80); }

/* ========== Buttons ========== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 40px; border-radius: 2px; font-size: 16px; font-weight: 400; cursor: pointer; border: none; transition: transform .2s, box-shadow .2s, background .2s; white-space: nowrap; }
.btn-primary { background: var(--white-100); color: var(--primary-6); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.btn-outline { background: transparent; color: var(--white-100); border: 1px solid var(--white-100); }
.btn-outline:hover { background: var(--white-10); }
.btn-blue { background: var(--primary-6); color: var(--white-100); }
.btn-blue:hover { background: var(--primary-7); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(29,57,196,.3); }

/* ========== Sections ========== */
.section { padding: 80px 0; }
.section-light { background: var(--fill-1); }
.section-dark { background: var(--bg-dark); color: #fff; }
.section-title { text-align: center; margin-bottom: 64px; }
.section-title h2 { font-size: 36px; font-weight: 500; line-height: 44px; margin-bottom: 12px; color: var(--text-1); }
.section-title p { font-size: 16px; line-height: 24px; color: var(--text-2); }
.section-dark .section-title h2 { color: var(--white-100); }
.section-dark .section-title p { color: var(--white-60); }

/* ========== Stats Bar (overlayed on hero bottom) ========== */
.stats-overlay { backdrop-filter: blur(10px); background: var(--white-60); border-top: 1px solid var(--white-100); display: flex; align-items: center; max-width: 1920px; margin: 0 auto; padding: 0 240px; }
.stats-overlay .stat-item { flex: 1; display: flex; align-items: center; gap: 20px; padding: 40px 0; }
.stat-icon { width: 120px; height: 120px; flex-shrink: 0; }
.stat-icon img { width: 100%; height: 100%; object-fit: contain; }
.stat-info { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.stat-value { display: flex; align-items: baseline; gap: 4px; color: var(--text-1); }
.stat-value .num { font-size: 36px; line-height: 44px; font-weight: 400; }
.stat-value .unit { font-size: 16px; line-height: 24px; }
.stat-label { font-size: 14px; line-height: 22px; color: var(--text-2); }

/* Legacy stats (for sub-pages) */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0; }
.stat-item { text-align: center; padding: 40px 16px; position: relative; }
.stat-item + .stat-item::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 1px; height: 40px; background: rgba(255,255,255,.12); }
.stat-num { font-family: 'D-DIN', 'DIN Alternate', 'Roboto Condensed', monospace; font-size: 44px; font-weight: 400; color: var(--primary); line-height: 1; margin-bottom: 8px; letter-spacing: -0.02em; white-space: nowrap; }
.section-dark .stat-num { color: #fff; }
.stat-unit { font-size: 14px; color: var(--text-3); white-space: nowrap; }
.section-dark .stat-unit { color: var(--white-60); }

/* ========== Advantage Cards (产品优势) ========== */
.advantage-section { padding: 80px 0; }
.advantage-grid { display: flex; gap: 20px; }
.advantage-card { flex: 1; background: var(--white-100); border: 1px solid var(--border-1); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 24px; }
.advantage-card:hover { box-shadow: var(--shadow-card); }
.advantage-icon { width: 40px; height: 40px; }
.advantage-icon img { width: 100%; height: 100%; object-fit: contain; }
.advantage-title { font-size: 20px; font-weight: 500; line-height: 28px; color: var(--text-1); }
.advantage-desc { font-size: 16px; line-height: 24px; color: var(--text-3); }

/* ========== Partner Marquee (合作伙伴) ========== */
.partner-section { padding: 80px 0; }
.partner-track-wrap { overflow: hidden; width: 100%; position: relative; }
.partner-track { display: flex; gap: 20px; animation: marquee-scroll 120s linear infinite; width: max-content; }
.partner-track:hover { animation-play-state: paused; }
.partner-card { flex-shrink: 0; width: 216px; background: var(--white-100); border: 1px solid var(--border-1); border-radius: var(--radius); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 13px 17px; }
.partner-logo-wrap { width: 182px; height: 72px; display: flex; align-items: center; justify-content: center; border-radius: 8px; }
.partner-logo-wrap img { max-width: 100%; max-height: 100%; object-fit: contain; }
.partner-name { font-size: 14px; font-weight: 400; line-height: 22px; color: var(--text-1); text-align: center; }

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ========== Product Cards (产品中心) ========== */
.products-section { padding: 80px 0; position: relative; overflow: hidden; }
.products-section .products-bg { position: absolute; inset: 0; opacity: 0.3; }
.products-section .products-bg img { width: 100%; height: 100%; object-fit: cover; }
.product-grid { display: flex; flex-direction: column; gap: 20px; position: relative; z-index: 1; }
.product-row { display: flex; gap: 20px; }
.product-card { flex: 1; background: var(--white-100); border-radius: var(--radius-lg); padding: 40px 32px; display: flex; flex-direction: column; gap: 24px; box-shadow: var(--shadow-card); transition: transform .3s; }
.product-card:hover { transform: translateY(-4px); }
.product-card-icon { width: 56px; height: 56px; }
.product-card-icon img { width: 100%; height: 100%; }
.product-card h3 { font-size: 20px; font-weight: 500; line-height: 28px; color: var(--text-1); }
.product-card p { font-size: 16px; line-height: 24px; color: var(--text-2); }

/* ========== Solution Grid (解决方案) ========== */
.solution-section { padding: 80px 0; background: var(--fill-1); }
.solution-grid-new { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.solution-card { background: var(--white-100); border: 1px solid var(--border-1); border-radius: var(--radius); overflow: hidden; transition: transform .3s, box-shadow .3s; }
.solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.solution-card-img { width: 100%; height: 190px; background-size: cover; background-position: center; background-color: var(--primary-1); }
.solution-card-body { padding: 20px; }
.solution-card h4 { font-size: 16px; font-weight: 500; line-height: 24px; color: var(--text-1); margin-bottom: 8px; }
.solution-card p { font-size: 14px; line-height: 22px; color: var(--text-3); }

/* ========== Algorithm Table ========== */
.algo-section { padding: 80px 0; }
.algo-table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border-2); }
.algo-table { width: 100%; border-collapse: collapse; min-width: 900px; }
.algo-table th, .algo-table td { padding: 12px 16px; text-align: center; font-size: 14px; border: 1px solid var(--border-2); }
.algo-table thead th { background: var(--primary-9); color: #fff; font-weight: 500; font-size: 15px; white-space: nowrap; }
.algo-table .scene-label { background: var(--primary-8); color: #fff; font-weight: 500; font-size: 14px; white-space: nowrap; vertical-align: middle; min-width: 80px; }
.algo-table tbody td { background: #fff; color: var(--text-1); transition: background .2s; font-size: 13px; padding: 10px 12px; }
.algo-table tbody td:not(.scene-label):not(:empty):hover { background: var(--primary-1); color: var(--primary); }
.algo-table tbody tr:nth-child(even) td:not(.scene-label) { background: #fafbfe; }
.algo-table tbody td:empty { background: #f8f9fc; }
.algo-table-header { display: flex; align-items: center; justify-content: center; margin-bottom: 16px; gap: 32px; }
.algo-table-stats { display: flex; gap: 48px; }
.algo-table-stat { display: flex; align-items: baseline; gap: 6px; font-size: 16px; color: var(--text-2); }
.algo-table-stat strong { font-family: 'D-DIN', 'DIN Alternate', 'Roboto Condensed', monospace; color: var(--primary); font-size: 42px; font-weight: 700; line-height: 1; }

/* ========== Cert Marquee (资质认证) ========== */
.cert-section { padding: 80px 0 120px; }
.cert-track-wrap { overflow: hidden; width: 100%; position: relative; }
.cert-track { display: flex; gap: 20px; animation: marquee-scroll 50s linear infinite; width: max-content; }
.cert-track:hover { animation-play-state: paused; }
.cert-card { flex-shrink: 0; width: 305px; background: var(--white-100); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 32px; display: flex; flex-direction: column; align-items: center; gap: 19px; }
.cert-card-img { width: 100%; height: 205px; border-radius: 5px; overflow: hidden; display: flex; align-items: center; justify-content: center; background: var(--fill-1); }
.cert-card-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.cert-card span { font-size: 16px; line-height: 24px; color: var(--text-2); text-align: center; }

/* ========== Globe Section (全球服务网络) ========== */
.globe-section { background: var(--bg-dark); padding: 80px 0; }
.globe-section .section-title h2 { color: var(--white-100); }
.globe-content { display: flex; gap: 64px; align-items: center; }
.globe-stats { flex: 1; display: flex; gap: 20px; }
.globe-stats-col { flex: 1; display: flex; flex-direction: column; gap: 20px; }
.globe-stats .stat-item { padding: 12px; text-align: left; }
.globe-stats .stat-item h4 { font-size: 20px; font-weight: 500; line-height: 28px; color: var(--white-100); margin-bottom: 8px; }
.globe-stats .stat-item p { font-size: 14px; line-height: 22px; color: var(--white-60); }
.globe-visual { flex-shrink: 0; width: 606px; height: 552px; position: relative; }
.globe-visual #earth-container { width: 100%; height: 100%; }

/* ========== CTA ========== */
.cta-section { position: relative; padding: 80px 0; overflow: hidden; }
.cta-section .cta-bg { position: absolute; inset: 0; z-index: 0; }
.cta-section .cta-bg img { width: 100%; height: 100%; object-fit: cover; }
.cta-content { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 24px; align-items: flex-start; }
.cta-content h2 { font-size: 36px; font-weight: 500; line-height: 44px; color: var(--text-1); }
.cta-content p { font-size: 24px; line-height: 32px; color: var(--text-2); }

/* ========== Footer ========== */
.footer { background: var(--bg-footer); color: #fff; padding: 77px 0 38px; }
.footer .container { max-width: 1920px; padding: 0 240px; }
.footer-grid { display: flex; gap: 51px; margin-bottom: 51px; }
.footer-brand { width: 445px; flex-shrink: 0; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 8px; font-size: 23px; font-weight: 500; color: var(--white-100); margin-bottom: 20px; }
.footer-brand .footer-logo img { height: 32px; width: 32px; object-fit: contain; border-radius: 50%; }
.footer-brand p { font-size: 18px; line-height: 32px; color: var(--text-4); }
.footer-col { flex: 1; }
.footer-col h4 { font-size: 21px; font-weight: 500; color: var(--white-100); margin-bottom: 20px; line-height: 33px; }
.footer-col a { display: block; font-size: 18px; line-height: 29px; color: var(--text-4); padding: 4px 0; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid var(--white-10); padding-top: 32px; display: flex; justify-content: space-between; align-items: center; font-size: 17px; color: var(--text-4); }

/* ========== Page Banner (子页面) ========== */
.page-banner { height: 540px; display: flex; align-items: center; padding-top: 64px; background-size: cover; background-position: center right; background-repeat: no-repeat; text-align: left; }
.page-banner .container { width: 100%; display: flex; flex-direction: column; align-items: flex-start; }
.page-banner h1 { font-size: 38px; font-weight: 500; margin-bottom: 12px; color: var(--text-1); white-space: nowrap; }
.page-banner p { font-size: 16px; max-width: 600px; margin: 0; color: var(--text-2); line-height: 1.6; }

/* ========== Feature Row ========== */
.feature-row { display: flex; align-items: center; gap: 60px; padding: 60px 0; }
.feature-row.reverse { flex-direction: row-reverse; }
.feature-img { flex: 1; background-size: cover; background-position: center; border-radius: var(--radius); min-height: 300px; display: flex; align-items: center; justify-content: center; background-color: var(--primary-1); }
.feature-text { flex: 1; }
.feature-text h3 { font-size: 28px; font-weight: 500; margin-bottom: 16px; }
.feature-text p { font-size: 15px; color: var(--text-2); line-height: 1.8; margin-bottom: 20px; }
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feature-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-2); }
.feature-list li::before { content: '✓'; color: var(--primary); font-weight: 400; flex-shrink: 0; }

/* ========== Cards (Generic) ========== */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: #fff; border-radius: var(--radius); padding: 32px; border: 1px solid var(--border-1); transition: transform .3s, box-shadow .3s; box-shadow: var(--shadow-sm); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.card-icon { width: 56px; height: 56px; border-radius: var(--radius); background: linear-gradient(135deg, var(--primary-1), var(--primary-2)); display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 20px; color: var(--primary); }
.card-icon svg { width: 28px; height: 28px; stroke-width: 2; }
.card h3 { font-size: 18px; font-weight: 500; margin-bottom: 10px; }
.card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* ========== Case/Contact/Service/Trust/Algo etc (sub-pages) ========== */
.case-filters { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.case-filter { padding: 8px 20px; border-radius: var(--radius); font-size: 14px; border: 1px solid var(--border-2); cursor: pointer; transition: .2s; background: #fff; }
.case-filter.active, .case-filter:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-1); transition: transform .3s, box-shadow .3s; background: #fff; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.case-thumb { height: 200px; background: linear-gradient(135deg, var(--primary-2), var(--primary-1)); background-size: cover; background-position: center; }
.case-info { padding: 20px; }
.case-info h4 { font-size: 16px; font-weight: 500; margin-bottom: 8px; }
.case-info p { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.case-tag { display: inline-block; padding: 3px 10px; background: var(--primary-1); color: var(--primary); font-size: 12px; border-radius: var(--radius); margin-top: 10px; }

.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 400; margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 16px; border: 1px solid var(--border-2); border-radius: var(--radius); font-size: 14px; transition: border-color .2s; outline: none; font-family: inherit; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 120px; }
.contact-info-card { padding: 32px; background: var(--fill-1); border-radius: var(--radius); margin-bottom: 20px; }
.contact-info-card h4 { font-size: 16px; font-weight: 500; margin-bottom: 16px; }
.contact-info-card li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-2); padding: 8px 0; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { padding: 40px 32px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border-1); text-align: center; transition: transform .3s, box-shadow .3s; box-shadow: var(--shadow-sm); }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.service-card .icon { font-size: 48px; margin-bottom: 20px; }
.service-card h3 { font-size: 20px; font-weight: 500; margin-bottom: 12px; }
.service-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }
.service-card ul { text-align: left; margin-top: 16px; }
.service-card ul li { font-size: 14px; color: var(--text-2); padding: 6px 0 6px 20px; position: relative; }
.service-card ul li::before { content: '•'; color: var(--primary); position: absolute; left: 0; }

/* ========== Algo Page specific ========== */
.algo-showcase { display: flex; flex-direction: column; gap: 32px; }
.algo-showcase-item { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-1); transition: transform .3s, box-shadow .3s; }
.algo-showcase-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.algo-showcase-item img { width: 100%; height: auto; display: block; }
.algo-showcase-title { font-size: 16px; font-weight: 500; color: var(--text-1); padding: 16px 20px 12px; margin: 0; }
.algo-showcase-label { padding: 16px 24px; background: var(--primary-9); display: flex; align-items: center; justify-content: space-between; }

/* ========== Algo Scene Group Grid ========== */
.algo-scene-group { margin-bottom: 40px; }
.algo-scene-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--primary-9); border-radius: var(--radius) var(--radius) 0 0; }
.algo-scene-name { font-size: 15px; font-weight: 600; color: #fff; }
.algo-scene-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding: 16px; background: #f5f7fa; border-radius: 0 0 var(--radius) var(--radius); border: 1px solid var(--border-1); border-top: none; }
.algo-scene-card { text-align: center; }
.algo-scene-img { width: 100%; aspect-ratio: 4/3; background: #e2e6ec center/cover no-repeat; border-radius: 6px; margin-bottom: 8px; }
.algo-scene-card span { font-size: 13px; color: var(--text-2); }
.algo-showcase-label h4 { font-size: 16px; font-weight: 500; color: #fff; }
.algo-showcase-label .algo-scene-tag { display: inline-block; padding: 4px 14px; background: rgba(255,255,255,.15); color: #fff; font-size: 13px; border-radius: var(--radius); }
.algo-demo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.algo-demo-card { background: #fff; border-radius: var(--radius); border: 1px solid var(--border-1); overflow: hidden; transition: transform .3s, box-shadow .3s; box-shadow: var(--shadow-sm); }
.algo-demo-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.algo-demo-preview { height: 220px; background: linear-gradient(135deg, var(--primary-10), var(--primary-8)); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.6); font-size: 14px; }
.algo-demo-info { padding: 24px; }
.algo-demo-info h4 { font-size: 18px; font-weight: 500; margin-bottom: 8px; }
.algo-demo-info p { font-size: 14px; color: var(--text-2); line-height: 1.7; margin-bottom: 16px; }
.algo-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.algo-tag { display: inline-block; padding: 4px 12px; background: var(--primary-1); color: var(--primary); font-size: 12px; border-radius: var(--radius); }
.algo-flow { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.algo-flow-step { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border-1); min-width: 160px; text-align: center; }
.algo-flow-step .step-num { width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 400; font-size: 16px; }
.algo-flow-step h5 { font-size: 15px; font-weight: 500; }
.algo-flow-step p { font-size: 13px; color: var(--text-2); }
.algo-flow-arrow { color: var(--primary); font-size: 24px; font-weight: 400; }

.cert-stack-wrap { display: flex; align-items: center; justify-content: center; gap: 80px; }
.cert-stack { position: relative; width: 340px; height: 420px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.cert-stack-card { position: absolute; height: 380px; width: auto; border-radius: 12px; overflow: hidden; background: #fff; border: 1px solid var(--border-1); box-shadow: 0 4px 24px rgba(0,0,0,.1); transform-origin: center bottom; transform: translateX(calc(var(--i) * 8px)) scale(calc(1 - var(--i) * 0.03)); z-index: calc(7 - var(--i)); opacity: calc(1 - var(--i) * 0.15); transition: transform .4s, opacity .4s, z-index 0s; }
.cert-stack-card img { height: 100%; width: auto; display: block; }
.cert-stack-info h3 { font-size: 28px; font-weight: 500; color: var(--text-1); margin-bottom: 12px; }
.cert-stack-info > p { font-size: 15px; color: var(--primary); margin-bottom: 28px; }
.cert-stack-info ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.cert-stack-info ul li { font-size: 14px; color: var(--text-3); padding: 8px 8px 8px 20px; position: relative; cursor: pointer; border-radius: 6px; transition: all .2s; }
.cert-stack-info ul li:hover { color: var(--text-1); background: var(--fill-1); }
.cert-stack-info ul li.active { color: var(--primary); font-weight: 500; }
.cert-stack-info ul li::before { content: ''; position: absolute; left: 6px; top: 15px; width: 6px; height: 6px; border-radius: 50%; background: var(--border-2); transition: background .2s; }
.cert-stack-info ul li.active::before { background: var(--primary); }
.cert-stack { cursor: pointer; }

/* ========== Cert Fan (扇形展开) ========== */
.cert-fan { display: flex; align-items: center; justify-content: center; position: relative; height: 580px; }
.cert-fan-card {
  position: absolute;
  height: 510px; width: 363px;
  border-radius: 10px; overflow: hidden;
  background: #fff; border: 1px solid rgba(0,0,0,.08);
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
  transition: transform .5s, opacity .5s, filter .5s;
}
.cert-fan-card img { height: 100%; width: 100%; object-fit: cover; display: block; }
/* 中心 */
.cert-fan-card[style*="--pos:0"] { z-index: 10; transform: translateX(0); opacity: 1; filter: none; box-shadow: 0 12px 48px rgba(0,0,0,.18); }
/* 左1 / 右1 */
.cert-fan-card[style*="--pos:-1"] { z-index: 9; transform: translateX(-50px); opacity: .7; filter: blur(2px); }
.cert-fan-card[style*="--pos:1"]  { z-index: 9; transform: translateX(50px); opacity: .7; filter: blur(2px); }
/* 左2 / 右2 */
.cert-fan-card[style*="--pos:-2"] { z-index: 8; transform: translateX(-95px); opacity: .5; filter: blur(3px); }
.cert-fan-card[style*="--pos:2"]  { z-index: 8; transform: translateX(95px); opacity: .5; filter: blur(3px); }
/* 左3 / 右3 */
.cert-fan-card[style*="--pos:-3"] { z-index: 7; transform: translateX(-135px); opacity: .35; filter: blur(4px); }
.cert-fan-card[style*="--pos:3"]  { z-index: 7; transform: translateX(135px); opacity: .35; filter: blur(4px); }
/* 左4 / 右4 */
.cert-fan-card[style*="--pos:-4"] { z-index: 6; transform: translateX(-170px); opacity: .2; filter: blur(5px); }
.cert-fan-card[style*="--pos:4"]  { z-index: 6; transform: translateX(170px); opacity: .2; filter: blur(5px); }

/* ========== Milestone Timeline ========== */
.milestone-timeline { display: flex; gap: 0; position: relative; }
.milestone-timeline::before { content: ''; position: absolute; top: 19px; left: 0; right: 0; height: 2px; background: var(--border-1); z-index: 0; }
.milestone-item { flex: 1; display: flex; flex-direction: column; align-items: center; position: relative; z-index: 1; text-align: center; padding: 0 12px; }
.milestone-dot { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-bottom: 20px; box-shadow: 0 0 0 6px var(--primary-1); }
.milestone-dot::after { content: ''; width: 12px; height: 12px; border-radius: 50%; background: #fff; }
.milestone-content h4 { font-size: 17px; font-weight: 500; color: var(--text-1); margin-bottom: 8px; }
.milestone-content p { font-size: 14px; color: var(--text-2); line-height: 1.6; }
@media (max-width: 768px) {
  .milestone-timeline { flex-direction: column; gap: 32px; padding-left: 28px; }
  .milestone-timeline::before { top: 0; bottom: 0; left: 19px; width: 2px; height: auto; right: auto; }
  .milestone-item { flex-direction: row; align-items: flex-start; text-align: left; padding: 0; gap: 20px; }
  .milestone-dot { margin-bottom: 0; }
}

/* ========== Animations ========== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity .5s, transform .5s; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ========== Responsive ========== */
@media (max-width: 1600px) {
  .container { padding: 0 120px; }
  .header .container { padding: 0 120px; }
  .mega-inner { padding: 48px 120px; }
  .hero-indicators { left: 120px; }
  .hero-slide { padding-left: 120px; padding-right: 120px; }
  .stats-overlay { padding: 0 120px; }
  .footer .container { padding: 0 120px; }
}

@media (max-width: 1200px) {
  .container { padding: 0 40px; }
  .header .container { padding: 0 40px; }
  .mega-inner { padding: 40px; }
  .mega-left { flex: 0 0 180px; padding-right: 32px; }
  .mega-left h3 { font-size: 24px; }
  .mega-right { gap: 32px; padding-left: 32px; }
  .hero-indicators { left: 40px; }
  .hero-slide { padding-left: 40px; padding-right: 40px; }
  .stats-overlay { padding: 0 40px; }
  .footer .container { padding: 0 40px; }
  .footer-grid { flex-wrap: wrap; }
  .footer-brand { width: 100%; }
}

@media (max-width: 1024px) {
  .card-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-grid-new { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .feature-row, .feature-row.reverse { flex-direction: column; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .algo-demo-grid { grid-template-columns: 1fr; }
  .algo-scene-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { flex-wrap: wrap; }
  .advantage-card { min-width: calc(50% - 10px); }
  .product-row { flex-wrap: wrap; }
  .product-card { min-width: calc(50% - 10px); }
  .globe-content { flex-direction: column; }
  .globe-visual { width: 100%; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .hero-slide h1 { font-size: 28px; line-height: 36px; }
  .hero-slide p { font-size: 16px; }
  .hero-3d { height: 440px; }
  .hero-slide { padding-left: 20px; padding-right: 20px; }
  .section-title h2 { font-size: 24px; line-height: 32px; }
  .section { padding: 56px 0; }
  .card-grid, .case-grid, .solution-grid-new, .service-grid, .algo-demo-grid, .algo-scene-grid, .adv-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 0; }
  .stat-num { font-size: 32px; }
  .footer-grid { flex-direction: column; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; width: 100%; background: #fff; border-top: 1px solid var(--border-1); padding: 16px; box-shadow: 0 8px 24px rgba(0,0,0,.1); }
  .nav.open { display: flex; }
  .menu-toggle { display: flex; }
  .nav-right { display: none; }
  .dropdown { position: static; transform: none; box-shadow: none; border: none; border-top: none; padding: 0; opacity: 1; visibility: visible; pointer-events: auto; width: auto; }
  .mega-inner { padding: 16px 0; flex-direction: column; gap: 16px; }
  .mega-left { flex: none; padding-right: 0; padding-bottom: 12px; border-bottom: 1px solid var(--border-1); }
  .mega-left h3 { font-size: 18px; margin-bottom: 4px; }
  .mega-left p, .mega-all { display: none; }
  .mega-divider { display: none; }
  .mega-right { padding-left: 0; flex-direction: column; gap: 8px; }
  .mega-col h4 { font-size: 13px; color: var(--text-3); margin-bottom: 8px; }
  .mega-col a { padding: 6px 0 6px 12px; font-size: 14px; }
  .nav-item { height: auto; padding: 10px 20px; border-bottom: none; }
  .hero-btns { flex-direction: column; }
  .hero-indicators { left: 20px; bottom: 16px; }
  .page-banner { height: 360px; padding-top: 64px; }
  .page-banner h1 { font-size: 24px; white-space: normal; }
  .stats-overlay { padding: 0 20px; flex-wrap: wrap; }
  .stats-overlay .stat-item { min-width: 50%; }
  .advantage-card { min-width: 100%; }
  .product-card { min-width: 100%; }
  .news-item { flex-direction: column; gap: 12px; }
  .news-date { flex-direction: row; align-items: center; gap: 8px; min-width: auto; }
  .news-day { font-size: 24px; }
}

/* ========== News List ========== */
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item { display: flex; align-items: center; gap: 32px; padding: 24px 0; border-bottom: 1px solid var(--border-2); text-decoration: none; color: inherit; transition: background .2s; }
.news-item:first-child { border-top: 1px solid var(--border-2); }
.news-item:hover { background: var(--fill-1); padding-left: 16px; padding-right: 16px; margin-left: -16px; margin-right: -16px; border-radius: var(--radius); }
.news-date { display: flex; flex-direction: column; align-items: center; min-width: 80px; flex-shrink: 0; }
.news-day { font-size: 36px; font-weight: 500; color: var(--primary); line-height: 1; font-family: 'D-DIN', sans-serif; }
.news-month { font-size: 13px; color: var(--text-3); margin-top: 4px; }
.news-body { flex: 1; min-width: 0; }
.news-body h4 { font-size: 16px; font-weight: 500; color: var(--text-1); margin-bottom: 8px; line-height: 1.5; }
.news-item:hover .news-body h4 { color: var(--primary); }
.news-body p { font-size: 14px; color: var(--text-3); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-arrow { font-size: 20px; color: var(--text-4); flex-shrink: 0; transition: color .2s, transform .2s; }
.news-item:hover .news-arrow { color: var(--primary); transform: translateX(4px); }
.news-thumb { width: 180px; height: 120px; border-radius: var(--radius); background: #e8ecf0 center/cover no-repeat; flex-shrink: 0; }
.news-date-text { font-size: 13px; color: var(--text-4); margin-top: 8px; display: block; }
.news-thumb-icon { background: rgba(53,83,253,.06) !important; display: flex; align-items: center; justify-content: center; }

.news-img-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; max-width: 720px; }
.news-img-grid img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); display: block; }
.news-detail-content img:not(.news-img-grid img) { max-width: 60%; border-radius: var(--radius); }

/* News Tags */
.news-tags { display: flex; gap: 12px; margin-bottom: 32px; flex-wrap: wrap; }
.news-tag { display: inline-block; padding: 6px 20px; border-radius: 20px; font-size: 14px; color: var(--text-2); background: var(--fill-2); cursor: pointer; transition: all .2s; border: 1px solid transparent; }
.news-tag:hover { color: var(--primary); border-color: var(--primary-3); }
.news-tag.active { color: #fff; background: var(--primary); border-color: var(--primary); }
.news-tag-label { display: inline-block; font-size: 12px; color: var(--primary); background: var(--primary-1); padding: 2px 10px; border-radius: 2px; margin-bottom: 6px; }
.news-back { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-3); margin-bottom: 24px; transition: color .2s; }
.news-back:hover { color: var(--primary); }

/* ========== Advantage Grid 7 columns ========== */
.advantage-grid-7 { flex-wrap: wrap; justify-content: center; }
.advantage-grid-7 .advantage-card { flex: 0 0 calc((100% - 60px) / 4); }

/* ========== Training Section ========== */
.training-section { padding: 80px 0; background: var(--gray-1); }
.training-grid { display: flex; gap: 24px; }
.training-card { flex: 1; background: #fff; border-radius: var(--radius); padding: 40px 32px; text-align: center; border: 1px solid var(--border-1); transition: all .3s; }
.training-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--primary-3); }
.training-icon { margin-bottom: 20px; display: flex; justify-content: center; }
.training-card h4 { font-size: 18px; font-weight: 500; color: var(--text-1); margin-bottom: 12px; }
.training-card p { font-size: 14px; color: var(--text-3); line-height: 1.7; }

/* ========== Floating Contact Bubbles ========== */
.float-contact { position: fixed; right: 20px; bottom: 100px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.float-btn { width: 52px; height: 52px; border-radius: 50%; background: #fff; border: 1px solid #eee; cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 16px rgba(0,0,0,.08); transition: all .3s ease; position: relative; text-decoration: none; }
.float-btn:hover { box-shadow: 0 4px 24px rgba(0,0,0,.14); transform: scale(1.06); border-color: var(--primary-3); }
.float-btn svg { width: 24px; height: 24px; stroke: var(--text-1); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; transition: all .3s; color: var(--text-1); }
.float-btn:hover svg { stroke: var(--primary); color: var(--primary); }
/* Popup panel (left side) */
.float-btn .float-panel { position: absolute; right: 64px; top: 50%; transform: translateY(-50%) scale(.95); min-width: 220px; background: #fff; border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.12); padding: 20px; opacity: 0; pointer-events: none; transition: all .25s ease; }
.float-btn:hover .float-panel { opacity: 1; pointer-events: auto; transform: translateY(-50%) scale(1); }
.float-panel::after { content: ''; position: absolute; right: -8px; top: 50%; transform: translateY(-50%); border: 8px solid transparent; border-left-color: #fff; border-right: none; }
.float-panel-title { font-size: 15px; font-weight: 600; color: var(--text-1); margin-bottom: 8px; }
.float-panel-desc { font-size: 13px; color: var(--text-3); line-height: 1.6; }
.float-panel-phone { font-size: 20px; font-weight: 600; color: var(--primary); letter-spacing: .5px; }
.float-panel-sub { font-size: 12px; color: var(--text-3); margin-top: 4px; }
/* QR code */
.float-panel-qr { display: flex; flex-direction: column; align-items: center; }
.float-panel-qr img { width: 140px; height: 140px; border-radius: 8px; background: #f5f5f5; }
.float-panel-qr span { font-size: 12px; color: var(--text-3); margin-top: 8px; }
/* Back to top */
.float-btn.back-top { opacity: 0; pointer-events: none; }
.float-btn.back-top.show { opacity: 1; pointer-events: auto; }
.float-btn.back-top svg { stroke: var(--text-1); }
.float-btn.back-top:hover svg { stroke: var(--primary); }
@media(max-width:768px){ .float-contact { right: 12px; bottom: 80px; } .float-btn { width: 44px; height: 44px; } .float-btn svg { width: 20px; height: 20px; } .float-btn .float-panel { display: none; } }

/* ========== Advantage Item — Horizontal (icon left + text right) ========== */
.solution-advantages { padding: 60px 0; background: var(--gray-1); }
.solution-advantages h3 { font-size: 24px; font-weight: 500; color: var(--text-1); margin-bottom: 32px; text-align: center; }
.adv-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.adv-card { display: flex; gap: 16px; padding: 20px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border-1); transition: all .3s; }
.adv-card:hover { border-color: var(--primary-3); box-shadow: var(--shadow-1); }
.adv-icon { width: 40px; height: 40px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--primary-1); border-radius: 8px; color: var(--primary); }
.adv-card h4 { font-size: 15px; font-weight: 500; color: var(--text-1); margin-bottom: 6px; }
.adv-card p { font-size: 13px; color: var(--text-3); line-height: 1.6; }

/* ========== Company Timeline (About Page) ========== */
.timeline-section { padding: 80px 0; }
.timeline { position: relative; padding-left: 40px; }
.timeline::before { content: ''; position: absolute; left: 12px; top: 0; bottom: 0; width: 2px; background: var(--border-2); }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ''; position: absolute; left: -34px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); border: 3px solid var(--primary-1); z-index: 1; }
.timeline-date { font-size: 14px; font-weight: 500; color: var(--primary); margin-bottom: 8px; font-family: 'D-DIN', sans-serif; }
.timeline-title { font-size: 18px; font-weight: 500; color: var(--text-1); margin-bottom: 8px; }
.timeline-desc { font-size: 14px; color: var(--text-3); line-height: 1.7; }

/* ========== Contact Section in About Page ========== */
/* ========== About Page (Qianxin-style) ========== */
.about-intro-content { max-width: 960px; margin: 0 auto 56px; }
.about-intro-content p { font-size: 16px; line-height: 2; color: var(--text-2); margin-bottom: 16px; text-align: justify; }
.about-intro-content p:last-child { margin-bottom: 0; }
.about-stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; background: var(--primary); border-radius: var(--radius-lg); padding: 48px 0; }
.about-stat { text-align: center; position: relative; }
.about-stat:not(:last-child)::after { content: ''; position: absolute; right: 0; top: 20%; height: 60%; width: 1px; background: rgba(255,255,255,.2); }
.about-stat-num { font-family: 'D-DIN', 'DIN Alternate', monospace; font-size: 40px; font-weight: 700; color: #fff; line-height: 1.2; }
.about-stat-label { font-size: 14px; color: rgba(255,255,255,.8); margin-top: 8px; }


.about-contact { padding: 80px 0; background: #fff; }
.about-contact-grid { display: flex; gap: 60px; align-items: flex-start; }
.about-contact-form { flex: 1; }
.about-contact-info { flex: 0 0 360px; }
.about-contact-info h3 { font-size: 20px; font-weight: 500; color: var(--text-1); margin-bottom: 24px; }
.about-contact-info-item { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 20px; }
.about-contact-info-item svg { flex-shrink: 0; margin-top: 2px; }
.about-contact-info-item p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* ========== Platform Section (Algorithm Page) — adv-card override ========== */
.platform-intro .adv-grid { gap: 24px; }
.platform-intro .adv-card { padding: 24px; background: var(--gray-1); }
.platform-intro .adv-card:hover { background: #fff; }
.platform-intro .adv-icon { width: 44px; height: 44px; border-radius: 10px; }
.platform-intro .adv-card h4 { font-size: 16px; }
.platform-intro .adv-card p { line-height: 1.7; }
.capability-grid { display: flex; gap: 20px; justify-content: center; }
.capability-card { flex: 0 0 200px; text-align: center; padding: 32px 16px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border-1); transition: all .3s; }
.capability-card:hover { border-color: var(--primary-3); box-shadow: var(--shadow-1); transform: translateY(-4px); }
.capability-card svg { margin-bottom: 16px; }
.capability-card h4 { font-size: 15px; font-weight: 500; color: var(--text-1); }

/* Platform Intro Block */
.platform-intro-block { max-width: 900px; margin: -32px auto 40px; text-align: center; }
.platform-intro-block p { font-size: 16px; line-height: 1.8; color: var(--text-2); }

/* Scene Image Cards */
.scene-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.scene-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10; cursor: default; }
.scene-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.scene-card:hover img { transform: scale(1.08); }
.scene-card-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.6) 0%, rgba(0,0,0,.1) 50%, transparent 100%); display: flex; align-items: flex-end; padding: 20px; }
.scene-card-overlay span { color: #fff; font-size: 16px; font-weight: 500; letter-spacing: .5px; }

/* ========== Partner Logo Card (News Page) ========== */
.partner-logo-card { background: #f8f9fb; border: 1px solid var(--border-1); border-radius: var(--radius); padding: 48px 32px; display: flex; align-items: center; justify-content: center; }
.partner-logo-card img { max-height: 72px; max-width: 240px; object-fit: contain; }