/* ===== 基础 ===== */
:root {
  --blue: #0e63b5;
  --blue-deep: #0a2a52;
  --blue-light: #e8f2fb;
  --blue-line: #cfe3f5;
  --ink: #1c2b3a;
  --ink-2: #55677c;
  --bg: #ffffff;
  --bg-tint: #f4f8fc;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(14, 99, 181, 0.08);
  --shadow-hover: 0 16px 44px rgba(14, 99, 181, 0.16);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ===== 导航 ===== */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255, 255, 255, 0.82); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid transparent; transition: border-color .3s, box-shadow .3s; }
.nav.scrolled { border-bottom-color: var(--blue-line); box-shadow: 0 4px 20px rgba(10, 42, 82, 0.06); }
.nav-inner { display: flex; align-items: center; gap: 32px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { height: 38px; width: 38px; object-fit: cover; border-radius: 8px; }
.brand-name { font-size: 19px; font-weight: 700; letter-spacing: 1px; color: var(--blue-deep); }
.nav-links { display: flex; gap: 6px; margin-left: auto; }
.nav-link { padding: 8px 14px; font-size: 15px; color: var(--ink-2); border-radius: 8px; transition: color .2s, background .2s; position: relative; }
.nav-link:hover { color: var(--blue); background: var(--blue-light); }
.nav-link.active { color: var(--blue); font-weight: 600; }
.nav-link.active::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px; background: var(--blue); border-radius: 2px; }
.nav-link-platform { display: none; }
.nav-cta { display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; background: linear-gradient(135deg, var(--blue), #1a7fd4); color: #fff; font-size: 14px; font-weight: 600; border-radius: 999px; box-shadow: 0 4px 14px rgba(14, 99, 181, 0.3); transition: transform .2s, box-shadow .2s; flex-shrink: 0; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(14, 99, 181, 0.38); }
.nav-cta-current { background: #fff; color: var(--blue); border: 1.5px solid var(--blue-line); box-shadow: none; cursor: default; }
.nav-cta-current:hover { transform: none; box-shadow: none; border-color: var(--blue); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; margin-left: auto; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }

/* ===== 首屏 ===== */
.hero { position: relative; padding: 150px 0 70px; overflow: hidden; background: linear-gradient(180deg, #eaf3fb 0%, #f7fbff 55%, #ffffff 100%); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(14, 99, 181, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(14, 99, 181, 0.055) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 75%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.hero-glow-a { width: 520px; height: 520px; top: -140px; right: -80px; background: radial-gradient(circle, rgba(26, 143, 235, 0.28), transparent 65%); }
.hero-glow-b { width: 420px; height: 420px; bottom: -160px; left: -100px; background: radial-gradient(circle, rgba(14, 99, 181, 0.2), transparent 65%); }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--blue); background: #fff; border: 1px solid var(--blue-line); padding: 7px 16px; border-radius: 999px; box-shadow: var(--shadow); margin-bottom: 22px; }
.hero-eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .5; transform: scale(1.35); } }
.hero h1 { font-size: 46px; line-height: 1.24; font-weight: 800; color: var(--blue-deep); letter-spacing: 1px; margin-bottom: 20px; }
.hero-sub { font-size: 17px; color: var(--ink-2); max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 13px 34px; border-radius: 999px; font-size: 16px; font-weight: 600; transition: transform .2s, box-shadow .2s; }
.btn-primary { background: linear-gradient(135deg, var(--blue), #1a7fd4); color: #fff; box-shadow: 0 8px 24px rgba(14, 99, 181, 0.32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(14, 99, 181, 0.4); }
.btn-ghost { background: #fff; color: var(--blue); border: 1.5px solid var(--blue-line); }
.btn-ghost:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: var(--shadow); }
.hero-visual { position: relative; }
/* 首屏轮播 */
.hero-carousel { position: relative; height: 420px; border-radius: 18px; overflow: hidden; border: 5px solid #fff; box-shadow: var(--shadow-hover); background: #fbfdff; }
.hc-track { display: flex; height: 100%; transition: transform .5s ease; }
.hc-slide { position: relative; min-width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; padding: 20px; }
.hc-slide img { max-width: 100%; max-height: 100%; width: auto; height: auto; border-radius: 10px; }
.hc-tag { position: absolute; left: 14px; bottom: 14px; font-size: 12.5px; font-weight: 600; color: #fff; background: rgba(10, 42, 82, 0.72); backdrop-filter: blur(6px); padding: 5px 12px; border-radius: 999px; }
.hc-btn { position: absolute; top: 50%; transform: translateY(-50%); width: 38px; height: 38px; border-radius: 50%; border: none; background: rgba(255, 255, 255, 0.92); color: var(--blue-deep); cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 14px rgba(10, 42, 82, 0.18); z-index: 3; transition: background .2s; }
.hc-btn:hover { background: #fff; }
.hc-prev { left: 12px; }
.hc-next { right: 12px; }
.hc-dots { position: absolute; bottom: 14px; right: 16px; display: flex; gap: 7px; z-index: 3; }
.hc-dot { width: 8px; height: 8px; border-radius: 50%; border: none; padding: 0; background: rgba(10, 42, 82, 0.25); cursor: pointer; transition: background .2s; }
.hc-dot.active { background: var(--blue); }
.no-js .hc-btn, .no-js .hc-dots { display: none; }

/* ===== 通用板块 ===== */
.section { padding: 88px 0; }
.section-tint { background: var(--bg-tint); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 3px; color: var(--blue); margin-bottom: 10px; }
.section-title { font-size: 34px; font-weight: 800; color: var(--blue-deep); margin-bottom: 14px; }
.section-title::after { content: ""; display: block; width: 48px; height: 4px; background: linear-gradient(90deg, var(--blue), #4da6e8); border-radius: 2px; margin: 14px auto 0; }
.section-desc { font-size: 16px; color: var(--ink-2); }

/* ===== 公司简介（单栏居中，右侧 logo 卡已移除） ===== */
.about-body { max-width: 880px; margin: 0 auto; text-align: center; }
.about-lead { font-size: 16.5px; color: var(--ink); margin-bottom: 28px; }
.about-lead strong { color: var(--blue); font-weight: 600; }
.about-info { display: grid; gap: 14px; max-width: 640px; margin: 0 auto; text-align: left; }
.about-info-item { display: flex; gap: 14px; align-items: flex-start; background: var(--bg-tint); border: 1px solid var(--blue-line); border-radius: var(--radius); padding: 16px 18px; }
.about-info-item svg { color: var(--blue); flex-shrink: 0; margin-top: 4px; }
.about-info-label { font-size: 13px; color: var(--ink-2); }
.about-info-value { font-size: 15px; font-weight: 600; color: var(--ink); }

/* ===== 核心能力 ===== */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cap-card { background: #fff; border: 1px solid var(--blue-line); border-radius: 20px; padding: 38px 30px; box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s, border-color .25s; position: relative; overflow: hidden; }
.cap-card::after { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--blue), #4da6e8); transform: scaleX(0); transform-origin: left; transition: transform .35s; }
.cap-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: #a9cdec; }
.cap-card:hover::after { transform: scaleX(1); }
.cap-icon { width: 66px; height: 66px; border-radius: 18px; background: linear-gradient(135deg, var(--blue-light), #d8ebfa); display: flex; align-items: center; justify-content: center; color: var(--blue); margin-bottom: 22px; }
.cap-card h3 { font-size: 19px; font-weight: 700; color: var(--blue-deep); margin-bottom: 12px; }
.cap-card p { font-size: 14.5px; color: var(--ink-2); }

/* ===== 交付案例（4 列 x 2 行统一网格） ===== */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 44px; }
.case-card { background: #fff; border: 1px solid var(--blue-line); border-radius: var(--radius); padding: 24px 22px; transition: transform .25s, box-shadow .25s; position: relative; }
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.case-tags { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.case-region { display: inline-block; font-size: 12.5px; font-weight: 600; color: var(--blue); background: var(--blue-light); border-radius: 6px; padding: 3px 10px; }
.case-scale { display: inline-block; font-size: 12.5px; font-weight: 600; color: #fff; background: linear-gradient(135deg, var(--blue), #2a8ade); border-radius: 6px; padding: 3px 10px; }
.case-card h3 { font-size: 15.5px; font-weight: 700; color: var(--ink); line-height: 1.5; margin-bottom: 8px; }
.case-card p { font-size: 13px; color: var(--ink-2); }

/* ===== 资质荣誉（统一规格荣誉墙） ===== */
.honor-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.honor-item { background: #fff; border: 1px solid var(--blue-line); border-radius: 14px; overflow: hidden; cursor: zoom-in; transition: transform .25s, box-shadow .25s; }
.honor-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.honor-item-img { aspect-ratio: 4 / 3; background: #fbfdff; display: flex; align-items: center; justify-content: center; padding: 12px; }
.honor-item-img img { max-width: 100%; max-height: 100%; width: auto; height: auto; }
.honor-item figcaption { text-align: center; padding: 9px 8px 11px; border-top: 1px solid var(--blue-line); }
.honor-item .hi-cap { display: block; font-size: 13px; font-weight: 600; color: var(--ink); }
.honor-item .hi-sub { display: block; font-size: 11.5px; font-weight: 400; color: var(--ink-2); margin-top: 2px; }
.honor-tip { text-align: center; font-size: 13px; color: var(--ink-2); margin-top: 22px; }

/* ===== 联系我们（含高德地图） ===== */
.contact-main { display: grid; grid-template-columns: 1fr 1.05fr; gap: 26px; margin-bottom: 26px; }
.contact-info { background: linear-gradient(160deg, #0e63b5 0%, #0a2a52 100%); color: #fff; border-radius: 22px; padding: 40px 38px; box-shadow: 0 18px 48px rgba(10,42,82,.26); position: relative; overflow: hidden; }
.contact-info::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 38px 38px; mask-image: radial-gradient(ellipse 80% 70% at 80% 20%, #000 20%, transparent 70%); -webkit-mask-image: radial-gradient(ellipse 80% 70% at 80% 20%, #000 20%, transparent 70%); }
.contact-info > * { position: relative; }
.contact-info-head { display: flex; gap: 16px; align-items: center; margin-bottom: 28px; }
.contact-info-head .ci-ico { width: 52px; height: 52px; border-radius: 14px; background: rgba(255,255,255,.14); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-info-head h3 { font-size: 19px; font-weight: 700; }
.contact-info-head p { font-size: 12px; color: rgba(255,255,255,.62); margin-top: 3px; }
.contact-list { display: grid; gap: 16px; margin-bottom: 30px; }
.contact-list li { display: grid; grid-template-columns: 76px 1fr; gap: 14px; align-items: start; font-size: 14.5px; line-height: 1.65; }
.contact-list .cl-key { color: rgba(255,255,255,.6); font-size: 13.5px; padding-top: 2px; }
.contact-list .cl-val { color: #fff; font-weight: 500; }
.btn-map-light { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--blue-deep); padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600; transition: transform .2s, box-shadow .2s; }
.btn-map-light:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(0,0,0,.22); }

/* 地图卡（真实高德截图背景） */
.contact-map { position: relative; border-radius: 22px; overflow: hidden; border: 1px solid var(--blue-line); box-shadow: var(--shadow); background: #eef5fc; min-height: 420px; }
.map-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.map-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(14,99,181,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(14,99,181,.07) 1px, transparent 1px); background-size: 36px 36px; }
.map-road { position: absolute; background: #fff; box-shadow: 0 0 0 1px rgba(14,99,181,.09); }
.map-block { position: absolute; border-radius: 8px; background: rgba(255,255,255,.65); border: 1px solid rgba(14,99,181,.08); }
.map-water { position: absolute; background: linear-gradient(180deg, rgba(120,180,230,.22), rgba(120,180,230,.13)); border-radius: 40% 60% 55% 45% / 55% 45% 60% 40%; }
.map-pin { position: absolute; left: 50%; top: 46%; transform: translate(-50%, -100%); z-index: 5; text-align: center; }
.map-pin-glow { position: absolute; left: 50%; bottom: -14px; transform: translateX(-50%); width: 92px; height: 26px; background: radial-gradient(ellipse, rgba(14,99,181,.28), transparent 70%); }
.map-pin svg { position: relative; filter: drop-shadow(0 6px 12px rgba(10,42,82,.32)); }
.map-pin-card { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); background: #fff; border-radius: 14px; padding: 12px 20px; box-shadow: 0 10px 30px rgba(10,42,82,.18); border: 1px solid var(--blue-line); white-space: nowrap; text-align: center; z-index: 6; }
.map-pin-card strong { display: block; font-size: 14.5px; color: var(--blue-deep); }
.map-pin-card span { font-size: 12.5px; color: var(--ink-2); }
.map-actions { position: absolute; right: 16px; top: 16px; display: grid; gap: 10px; z-index: 6; }
.map-btn { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,.94); color: var(--blue-deep); font-size: 13px; font-weight: 600; padding: 9px 14px; border-radius: 10px; box-shadow: 0 4px 14px rgba(10,42,82,.14); border: 1px solid var(--blue-line); transition: transform .2s, border-color .2s; }
.map-btn:hover { transform: translateY(-2px); border-color: var(--blue); }
.map-note { position: absolute; left: 16px; top: 16px; z-index: 6; font-size: 11.5px; color: var(--ink-2); background: rgba(255,255,255,.88); padding: 5px 12px; border-radius: 8px; }

/* 二维码行 */
.contact-qr-row { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact-qr-card { display: flex; align-items: center; gap: 24px; background: #fff; border: 1px solid var(--blue-line); border-radius: 20px; padding: 28px 32px; box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s; }
.contact-qr-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.contact-qr-card img { width: 132px; height: 132px; object-fit: contain; border: 1px solid var(--blue-line); border-radius: 14px; padding: 8px; background: #fff; flex-shrink: 0; }
.contact-qr-card h3 { font-size: 18px; font-weight: 700; color: var(--blue-deep); margin-bottom: 8px; }
.contact-qr-card p { font-size: 13.5px; color: var(--ink-2); }

/* ===== 页脚 ===== */
.footer { background: var(--blue-deep); color: rgba(255, 255, 255, 0.75); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { width: 46px; height: 46px; border-radius: 10px; }
.footer-name { color: #fff; font-size: 16px; font-weight: 700; }
.footer-slogan { font-size: 12.5px; opacity: .7; margin-top: 2px; }
.footer-copy { font-size: 13px; opacity: .65; }

/* ===== 渐显动画 ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
/* JS 不可用时直接显示，避免内容永久隐藏 */
.no-js .reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-eyebrow .dot, .pv-eyebrow .dot, .pv-badge::before { animation: none; }
}

/* ===== Lightbox ===== */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(10, 26, 46, 0.88); display: flex; align-items: center; justify-content: center; padding: 40px; opacity: 0; pointer-events: none; transition: opacity .3s; }
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox img { max-width: min(900px, 92vw); max-height: 88vh; border-radius: 10px; box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5); }
.lightbox-close { position: absolute; top: 22px; right: 30px; width: 44px; height: 44px; border: none; border-radius: 50%; background: rgba(255, 255, 255, 0.14); color: #fff; font-size: 24px; cursor: pointer; transition: background .2s; }
.lightbox-close:hover { background: rgba(255, 255, 255, 0.28); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 520px; }
  .hero-carousel { height: 360px; }
  .hero h1 { font-size: 38px; }
  .cap-grid { grid-template-columns: 1fr 1fr; }
  .case-grid { grid-template-columns: 1fr 1fr; }
  .honor-wall { grid-template-columns: 1fr 1fr 1fr; }
  .contact-main { grid-template-columns: 1fr; }
  .contact-map { min-height: 380px; }
}
@media (max-width: 768px) {
  .nav-inner { gap: 10px; }
  .nav-links { position: fixed; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 28px 24px; gap: 4px; border-bottom: 1px solid var(--blue-line); box-shadow: 0 20px 40px rgba(10, 42, 82, 0.12); transform: translateY(-130%); transition: transform .35s; }
  .nav-links.open { transform: none; }
  .nav-link { padding: 12px 14px; font-size: 16px; }
  .nav-link.active::after { display: none; }
  .nav-link-platform { display: flex; align-items: center; justify-content: space-between; color: var(--blue); font-weight: 600; border-top: 1px dashed var(--blue-line); margin-top: 6px; padding-top: 14px; }
  .nav-toggle { display: flex; margin-left: 0; }
  .nav-cta { display: inline-flex; margin-left: auto; padding: 7px 13px; font-size: 13px; gap: 4px; }
  .nav-cta svg { width: 12px; height: 12px; }
  .hero { padding-top: 120px; }
  .hero h1 { font-size: 31px; }
  .hero-sub { font-size: 15px; }
  .hero-carousel { height: 300px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 27px; }
  .cap-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .honor-wall { grid-template-columns: 1fr 1fr; }
  .contact-qr-row { grid-template-columns: 1fr; }
  .contact-qr-card { flex-direction: column; text-align: center; }
  .contact-info { padding: 32px 24px; }
  .contact-list li { grid-template-columns: 68px 1fr; gap: 10px; font-size: 14px; }
  .map-pin-card { white-space: normal; left: 16px; right: 16px; bottom: 16px; transform: none; }
  .footer-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .brand img { height: 32px; width: 32px; }
  .brand-name { font-size: 17px; }
  .nav-cta { padding: 6px 10px; font-size: 12px; }
  .hero h1 { font-size: 27px; }
  .btn { padding: 11px 26px; font-size: 15px; }
}