/* =========================================================
   南京市玄盘雨科技有限责任公司 — 企业官网样式
   设计风格：简约大气 / 现代科技
   ========================================================= */

:root {
  /* 主色板 */
  --ink: #0f2238;          /* 深海军蓝 */
  --ink-soft: #16314f;
  --accent: #2b86b8;       /* 主强调色 科技蓝 */
  --accent-2: #39a7c9;     /* 次强调色 青蓝 */
  --accent-soft: #e8f3f8;  /* 浅色背景块 */
  --gold: #c9a24b;         /* 点缀金 */

  /* 中性色 */
  --bg: #ffffff;
  --bg-soft: #f5f8fa;
  --bg-mist: #eef3f7;
  --text: #283342;
  --text-soft: #54616f;
  --muted: #8a96a3;
  --line: #e3e9ee;

  /* 排版 */
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* 尺寸 */
  --maxw: 1180px;
  --radius: 14px;
  --shadow-sm: 0 2px 10px rgba(15, 34, 56, 0.06);
  --shadow-md: 0 14px 40px rgba(15, 34, 56, 0.10);
  --shadow-lg: 0 24px 60px rgba(15, 34, 56, 0.14);
}

/* ---------- reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.25; color: var(--ink); font-weight: 700; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
  padding: 22px 0;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  box-shadow: var(--shadow-sm);
  padding: 14px 0;
}
.nav { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.brand .logo-box {
  width: 44px; height: 44px; border-radius: 11px;
  background: linear-gradient(135deg, #2b86b8, #35a8d8);
  display: grid; place-items: center;
  box-shadow: 0 2px 10px rgba(43,134,184,.3);
  flex-shrink: 0;
  transition: transform .25s, box-shadow .25s;
}
.brand .logo-box img {
  width: 32px; height: auto;
  object-fit: contain;
}
.brand:hover .logo-box {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(43,134,184,.4);
}
.brand .name {
  font-size: 17px; color: var(--ink); letter-spacing: .5px;
  line-height: 1.2;
}
.brand .name small {
  display: block; font-size: 11px; color: var(--muted);
  font-weight: 500; letter-spacing: 1.5px; margin-top: 2px;
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 15px; color: var(--text-soft); position: relative; font-weight: 500;
  transition: color .2s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--accent); transition: width .25s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  padding: 10px 22px; border-radius: 999px;
  background: var(--ink); color: #fff !important; font-weight: 600; font-size: 14px;
  transition: transform .2s, background .2s;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--accent); transform: translateY(-1px); }

/* 移动端菜单按钮 */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: 0; }
.menu-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px; font-weight: 600; font-size: 15px;
  cursor: pointer; border: 1px solid transparent; transition: all .25s ease;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 24px rgba(43,134,184,.28); }
.btn-primary:hover { background: var(--ink); transform: translateY(-2px); box-shadow: 0 16px 30px rgba(15,34,56,.20); }
.btn-primary:disabled {
  opacity: .65; cursor: not-allowed; transform: none;
  box-shadow: 0 4px 12px rgba(43,134,184,.18);
}
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--accent-soft); }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin-bottom: 14px;
}
.section-head h2 { font-size: 34px; margin-bottom: 16px; letter-spacing: .5px; }
.section-head p { color: var(--text-soft); font-size: 16px; }
.bg-soft { background: var(--bg-soft); }
.bg-ink { background: var(--ink); color: #fff; }
.bg-ink h2, .bg-ink h3 { color: #fff; }
.bg-ink p { color: rgba(255,255,255,.78); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; padding: 190px 0 120px; overflow: hidden;
  background: radial-gradient(1200px 600px at 80% -10%, #1c4a6e 0%, transparent 55%),
              radial-gradient(900px 500px at 10% 10%, #15314c 0%, transparent 50%),
              linear-gradient(160deg, #0f2238 0%, #143150 100%);
  color: #fff;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 26px 26px; opacity: .6;
}
.hero-inner { position: relative; z-index: 1; }
.hero .tag {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: 1px;
  padding: 7px 16px; border-radius: 999px; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15); color: rgba(255,255,255,.9); margin-bottom: 26px;
}
.hero .tag i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 4px rgba(57,167,201,.25); }
.hero h1 { font-size: 52px; line-height: 1.15; color: #fff; margin-bottom: 22px; letter-spacing: 1px; }
.hero h1 .hl { background: linear-gradient(90deg, var(--accent-2), #7fd3e8); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 18px; color: rgba(255,255,255,.8); margin-bottom: 36px; max-width: 600px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; margin-top: 64px; flex-wrap: wrap; }
.hero-stats .stat .num { font-size: 38px; font-weight: 800; color: #fff; letter-spacing: 1px; }
.hero-stats .stat .num span { color: var(--accent-2); }
.hero-stats .stat .label { font-size: 14px; color: rgba(255,255,255,.65); }

/* ---------- 业务概览（首页卡片） ---------- */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; transition: transform .3s ease, box-shadow .3s ease, border-color .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.card .ico {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(43,134,184,.12), rgba(53,224,255,.1));
  color: var(--accent-2); margin-bottom: 20px;
  border: 1px solid rgba(53,224,255,.2);
  box-shadow: 0 0 16px rgba(53,224,255,.08), inset 0 0 12px rgba(53,224,255,.06);
  transition: all .35s ease;
}
.card .ico svg { width: 28px; height: 28px; }
.card:hover .ico {
  box-shadow: 0 0 24px rgba(53,224,255,.25), inset 0 0 14px rgba(53,224,255,.12);
  border-color: rgba(53,224,255,.45);
  transform: scale(1.08);
}
.card h3 { font-size: 19px; margin-bottom: 12px; }
.card p { color: var(--text-soft); font-size: 15px; }

/* ---------- 核心优势 ---------- */
.feature { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.feature + .feature { margin-top: 88px; }
.feature.reverse { direction: rtl; }
.feature.reverse > * { direction: ltr; }
.feature .visual {
  border-radius: 18px; min-height: 340px; position: relative; overflow: hidden;
  background: linear-gradient(150deg, #0d2136, #143a56);
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 8px 32px rgba(15,34,56,.4), inset 0 1px 0 rgba(53,224,255,.08);
}
.feature .visual::before {
  content: ""; position: absolute; inset: 0; border-radius: 18px;
  border: 1px solid rgba(53,224,255,.12); pointer-events: none;
}
.feature .visual .tech-viz { width: 100%; height: 100%; }
.feature .visual .badge {
  position: absolute; z-index: 3;
  padding: 10px 18px; background: rgba(13,33,54,.82);
  border: 1px solid rgba(53,224,255,.25); border-radius: 12px; font-size: 13px;
  backdrop-filter: blur(8px); color: rgba(255,255,255,.9); font-weight: 600;
  letter-spacing: .5px; box-shadow: 0 4px 16px rgba(0,0,0,.25);
}
.feature .visual .b1 { top: 20px; left: 20px; }
.feature .visual .b2 { bottom: 20px; right: 20px; }
.feature .visual .ring {
  width: 160px; height: 160px; border-radius: 50%;
  border: 2px dashed rgba(53,224,255,.28); display: grid; place-items: center;
}
.feature h3 { font-size: 26px; margin-bottom: 16px; }
.feature p { color: var(--text-soft); margin-bottom: 22px; }
.checklist { display: grid; gap: 12px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--text); }
.checklist li i { color: var(--accent); font-weight: 800; font-style: normal; margin-top: 2px; }

/* ---------- 服务领域 chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.chip {
  padding: 10px 20px; border-radius: 999px; background: #fff; border: 1px solid var(--line);
  font-size: 14px; color: var(--text-soft); transition: .2s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ---------- CTA 行动号召 ---------- */
.cta-band { text-align: center; }
.cta-band h2 { font-size: 32px; margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.8); max-width: 560px; margin: 0 auto 30px; }
.cta-inner {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #143150, #1d6f9b);
  border-radius: 22px; padding: 64px 40px;
}

/* ---------- 页脚 ---------- */
.site-footer { background: #0b1b2c; color: rgba(255,255,255,.7); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.site-footer .brand .logo-box {
  width: 48px; height: 48px; border-radius: 12px;
  box-shadow: 0 2px 12px rgba(43,134,184,.35);
}
.site-footer .brand .logo-box img { width: 36px; }
.site-footer .brand .name { color: #fff; }
.site-footer .brand .name small { color: rgba(255,255,255,.5); }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col a, .footer-col p { color: rgba(255,255,255,.62); font-size: 14px; display: block; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: var(--accent-2); }
.footer-about { font-size: 14px; line-height: 1.8; max-width: 280px; color: rgba(255,255,255,.6); }
.footer-bottom {
  margin-top: 48px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: 13px; color: rgba(255,255,255,.45);
}
.footer-bottom .beian { color: rgba(255,255,255,.45); transition: color .2s; }
.footer-bottom .beian:hover { color: var(--accent-2); }

/* ---------- 关于我们页 ---------- */
.page-hero {
  padding: 170px 0 90px;
  background: radial-gradient(900px 500px at 85% -20%, #1c4a6e 0%, transparent 55%),
              linear-gradient(160deg, #0f2238, #143150);
  color: #fff;
}
.page-hero h1 { font-size: 44px; color: #fff; margin-bottom: 16px; }
.page-hero p { color: rgba(255,255,255,.78); max-width: 620px; font-size: 17px; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,.55); margin-bottom: 22px; }
.breadcrumb a:hover { color: var(--accent-2); }

.timeline { position: relative; max-width: 720px; margin: 0 auto; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.timeline-item { position: relative; padding-bottom: 38px; }
.timeline-item::before {
  content: ""; position: absolute; left: -28px; top: 6px; width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--accent);
}
.timeline-item .year { font-weight: 700; color: var(--accent); font-size: 15px; }
.timeline-item h4 { font-size: 18px; margin: 4px 0 6px; }
.timeline-item p { color: var(--text-soft); font-size: 15px; }

.values { display: grid; grid-template-columns: repeat(3,1fr); gap: 26px; }
.value-card { text-align: center; padding: 38px 26px; }
.value-card .ico { margin: 0 auto 18px; }
.value-card h3 { font-size: 19px; margin-bottom: 10px; }
.value-card p { color: var(--text-soft); font-size: 15px; }

/* ---------- 产品服务页 ---------- */
.service-block { display: grid; grid-template-columns: 64px 1fr; gap: 22px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.service-block:last-child { border-bottom: 0; }
.service-block .num {
  width: 56px; height: 56px; border-radius: 14px; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.service-block h3 { font-size: 21px; margin-bottom: 8px; }
.service-block p { color: var(--text-soft); margin-bottom: 14px; }
.service-block .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-block .tags span { font-size: 13px; padding: 5px 13px; border-radius: 999px; background: var(--bg-soft); color: var(--text-soft); }

/* ---------- 联系我们页 ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 50px; align-items: start; }
.contact-info .item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-info .item:last-child { border-bottom: 0; }
.contact-info .ico { width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-size: 20px; }
.contact-info .item h4 { font-size: 15px; color: var(--muted); font-weight: 600; margin-bottom: 2px; }
.contact-info .item p { font-size: 16px; color: var(--text); }

/* 微信二维码 */
.contact-info .wechat-item {
  flex-direction: column; align-items: stretch;
  gap: 14px; padding: 24px 0 8px;
}
.contact-info .wechat-item > div { display: flex; align-items: center; gap: 16px; }
.contact-info .wechat-item .ico {
  background: linear-gradient(135deg, rgba(7,193,96,.1), rgba(7,193,96,.05));
  color: #07c460; border-color: rgba(7,193,96,.2);
}
.wechat-qrcode {
  width: 140px; height: auto; border-radius: 12px;
  border: 1px solid rgba(7,193,96,.2);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  transition: transform .25s, box-shadow .25s;
}
.wechat-qrcode:hover {
  transform: scale(1.06);
  box-shadow: 0 6px 20px rgba(0,0,0,.12), 0 0 0 1px rgba(7,193,96,.3);
}

/* 页脚二维码 */
.footer-qrcode {
  display: inline-flex; flex-direction: column; align-items: center; gap: 6px;
  margin-top: 10px; padding: 10px; border-radius: 12px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  transition: background .25s, border-color .25s;
}
.footer-qrcode:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(53,224,255,.2);
}
.footer-qrcode img {
  width: 100px; height: 100px; border-radius: 8px;
}
.footer-qrcode span {
  font-size: 11.5px; color: rgba(255,255,255,.45); letter-spacing: 1px;
}

.form-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 38px; box-shadow: var(--shadow-sm); }
.form-embed { width: 100%; border-radius: 12px; overflow: hidden; background: var(--bg-soft); }
.form-embed iframe { display: block; width: 100%; min-height: 520px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; color: var(--text-soft); margin-bottom: 8px; font-weight: 600; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 15px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--text); background: #fff; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(43,134,184,.12);
}
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 6px; }
/* ---------- 提示信息 ---------- */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(40px);
  background: var(--ink); color: #fff; padding: 14px 26px; border-radius: 999px; font-size: 14px;
  box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none; transition: .35s; z-index: 200;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 进入动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 首页轮播 ---------- */
.hero-carousel { position: relative; padding: 0 56px; }
.hero-slides { position: relative; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transform: translateY(14px);
  transition: opacity .6s ease, transform .6s ease; pointer-events: none;
}
.hero-slide.active { position: relative; opacity: 1; transform: none; pointer-events: auto; }
.hero-dots { display: flex; gap: 10px; margin-top: 34px; }
.hero-dots button {
  width: 10px; height: 10px; border-radius: 999px; border: 0; cursor: pointer;
  background: rgba(255,255,255,.32); transition: all .3s ease; padding: 0;
}
.hero-dots button.active { background: #fff; width: 30px; }
.hero-arrow {
  position: absolute; top: 42%; transform: translateY(-50%); z-index: 5;
  width: 46px; height: 46px; border-radius: 50%; cursor: pointer;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  color: #fff; font-size: 20px; display: grid; place-items: center; transition: .25s; backdrop-filter: blur(4px);
}
.hero-arrow:hover { background: rgba(255,255,255,.24); }
.hero-arrow.prev { left: 4px; }
.hero-arrow.next { right: 4px; }
@media (max-width: 720px) { .hero-arrow { display: none; } .hero-carousel { padding: 0; } }

/* ---------- 客户案例 ---------- */
/* ---------- 合作模式 ---------- */
.coop-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.coop-card {
  position: relative; background: #fff; border-radius: 18px; padding: 32px 28px 30px;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: .35s;
  overflow: hidden;
}
.coop-card:hover {
  transform: translateY(-4px); box-shadow: 0 12px 40px rgba(15,34,56,.1);
  border-color: rgba(53,224,255,.3);
}
.coop-card.featured {
  background: linear-gradient(160deg, #f6fbff, #fff);
  border-color: rgba(43,134,184,.25);
  box-shadow: 0 8px 32px rgba(43,134,184,.08);
}
.coop-badge {
  position: absolute; top: 16px; right: 18px; font-size: 11px; font-weight: 700;
  color: #fff; background: linear-gradient(135deg, #2b86b8, #35e0ff); padding: 4px 12px; border-radius: 999px;
  letter-spacing: .5px;
}
.coop-icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(43,134,184,.1), rgba(53,224,255,.08));
  color: var(--accent);
}
.coop-icon svg { width: 26px; height: 26px; }
.coop-card.featured .coop-icon {
  background: linear-gradient(135deg, rgba(43,134,184,.18), rgba(53,224,255,.14));
}
.coop-num {
  font-size: 13px; font-weight: 800; color: rgba(15,34,56,.15); letter-spacing: 2px; margin-bottom: 8px;
}
.coop-card h3 {
  font-size: 19px; margin-bottom: 12px; color: var(--ink);
}
.coop-card > p {
  font-size: 14px; color: var(--text-soft); line-height: 1.7; margin-bottom: 18px;
}
.coop-list {
  list-style: none; padding: 0; margin: 0;
}
.coop-list li {
  position: relative; padding-left: 22px; font-size: 13.5px; color: var(--text-soft); line-height: 2;
}
.coop-list li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent); opacity: .5;
}

/* 合作流程 */
.coop-flow {
  display: flex; align-items: flex-start; justify-content: center; gap: 0;
  margin-top: 56px; padding: 36px 20px 0; position: relative;
}
.flow-step {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  width: 120px; flex-shrink: 0;
}
.flow-dot {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #5ecfff); color: #fff;
  font-size: 15px; font-weight: 800; margin-bottom: 14px;
  box-shadow: 0 4px 16px rgba(43,134,184,.25); transition: .3s;
}
.flow-step:hover .flow-dot { transform: scale(1.1); box-shadow: 0 6px 24px rgba(43,134,184,.35); }
.flow-label {
  font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 4px;
}
.flow-step p { font-size: 12px; color: var(--muted); }
.flow-line {
  width: 48px; height: 2px; background: repeating-linear-gradient(
    to right, var(--line) 0, var(--line) 4px, transparent 4px, transparent 8px
  );
  margin-top: 22px; flex-shrink: 0;
}

/* ---------- 企业价值（Value Proposition） ---------- */
.value-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px;
}

.value-card {
  position: relative; background: #fff; border-radius: 20px;
  border: 1px solid var(--line); padding: 36px 32px 30px;
  transition: .4s ease; overflow: hidden;
}
.value-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  border-radius: 20px 20px 0 0; opacity: 0; transition: opacity .3s;
}

/* 卡片发光变体 */
.v-glow-cyan::before {
  background: linear-gradient(90deg, #35e0ff, transparent);
}
.v-glow-cyan:hover::before { opacity: 1; }
.v-glow-cyan:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(53,224,255,.14), 0 0 0 1px rgba(53,224,255,.2);
  border-color: rgba(53,224,255,.25);
}

.v-glow-purple::before {
  background: linear-gradient(90deg, #8a6bff, transparent);
}
.v-glow-purple:hover::before { opacity: 1; }
.v-glow-purple:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(138,107,255,.14), 0 0 0 1px rgba(138,107,255,.2);
  border-color: rgba(138,107,255,.25);
}

.featured-v {
  background: linear-gradient(160deg, #f8fbff, #fff);
  border-color: rgba(43,134,184,.18);
}
.featured-v::before {
  height: 3px; background: linear-gradient(90deg, var(--accent), var(--neon), var(--violet));
}
.featured-v:hover::before { opacity: 1; }
.featured-v:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 56px rgba(43,134,184,.12);
}

.v-badge {
  position: absolute; top: 16px; right: 20px;
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  padding: 4px 13px; border-radius: 999px;
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--neon));
}

.v-icon {
  width: 56px; height: 56px; margin-bottom: 20px;
  transition: transform .35s;
}
.v-icon svg { width: 100%; height: 100%; }
.value-card:hover .v-icon { transform: scale(1.08); }

.value-card h3 { font-size: 19px; margin-bottom: 10px; }
.value-card > p { font-size: 14.5px; color: var(--text-soft); line-height: 1.75; margin-bottom: 18px; }

.v-tags {
  display: flex; flex-wrap: wrap; gap: 7px;
}
.v-tags span {
  font-size: 12px; padding: 4px 12px; border-radius: 999px;
  background: var(--bg-soft); color: var(--text-soft);
  border: 1px solid rgba(43,134,184,.1);
  transition: .2s;
}
.v-tags span:hover {
  border-color: var(--accent); color: var(--accent);
  background: rgba(53,224,255,.06);
}

/* 底部数据条 */
.value-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 0; margin-top: 52px;
  background: linear-gradient(135deg, var(--ink), #163a54);
  border-radius: 18px; padding: 36px 40px;
  position: relative; overflow: hidden;
}
.value-bar::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(53,224,255,.15), transparent 70%);
  filter: blur(40px); pointer-events: none;
}

.bar-item { text-align: center; padding: 0 36px; }
.bar-num {
  font-size: 34px; font-weight: 800; color: var(--neon);
  letter-spacing: 1px; line-height: 1.2;
  text-shadow: 0 0 24px rgba(53,224,255,.3);
}
.bar-label {
  font-size: 13px; color: rgba(255,255,255,.55); margin-top: 6px; letter-spacing: 1px;
}
.bar-divider {
  width: 1px; height: 40px; background: rgba(255,255,255,.1); flex-shrink: 0;
}

/* ---------- 数据指标条 ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.metric .num { font-size: 40px; font-weight: 800; color: var(--accent); letter-spacing: 1px; }
.metric .num span { font-size: 20px; }
.metric .label { font-size: 14px; color: var(--text-soft); margin-top: 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .coop-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .feature, .feature.reverse { grid-template-columns: 1fr; direction: ltr; gap: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .values { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; top: 0; right: 0; height: 100vh; width: 260px; background: #fff;
    flex-direction: column; align-items: flex-start; gap: 4px; padding: 90px 28px;
    box-shadow: var(--shadow-lg); transform: translateX(100%); transition: transform .3s ease; z-index: 99;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { padding: 12px 0; width: 100%; font-size: 16px; }
  .nav-cta { margin-top: 12px; text-align: center; }
  .menu-toggle { display: flex; z-index: 101; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .coop-grid { grid-template-columns: 1fr; }
  .coop-flow { flex-wrap: wrap; gap: 16px 0; padding-top: 20px; }
  .flow-line { display: none; }
  .flow-step { width: calc(20% - 8px); min-width: 80px; }
  .wechat-qrcode { width: 120px; }
  .footer-qrcode img { width: 80px; height: 80px; }
  .hero h1 { font-size: 36px; }
  .hero { padding: 150px 0 90px; }
  .hero-stats { gap: 28px; }
  .section { padding: 70px 0; }
  .section-head h2 { font-size: 27px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .page-hero h1 { font-size: 33px; }
  .value-grid { grid-template-columns: 1fr; }
  .value-bar { flex-wrap: wrap; gap: 20px; padding: 28px 24px; }
  .bar-item { padding: 0 16px; }
  .bar-divider { display: none; }
}

/* =========================================================
   高科技增强层（深度优化）
   ========================================================= */
:root {
  --neon: #35e0ff;          /* 霓虹青 */
  --violet: #8a6bff;        /* 紫 */
  --grid-line: rgba(43, 134, 184, .07);
}

/* 全局极淡科技网格 */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 46px 46px;
}

/* hero / page-hero 漂浮光斑 */
.hero, .page-hero { position: relative; }
.hero .glow, .page-hero .glow {
  position: absolute; border-radius: 50%; filter: blur(62px);
  opacity: .55; pointer-events: none; z-index: 0;
}
.hero .glow.g1, .page-hero .glow.g1 {
  width: 440px; height: 440px; left: -90px; top: 30px;
  background: radial-gradient(circle, rgba(53,224,255,.5), transparent 70%);
  animation: float1 14s ease-in-out infinite;
}
.hero .glow.g2, .page-hero .glow.g2 {
  width: 380px; height: 380px; right: -70px; top: 110px;
  background: radial-gradient(circle, rgba(138,107,255,.45), transparent 70%);
  animation: float2 18s ease-in-out infinite;
}
.hero .glow.g3, .page-hero .glow.g3 {
  width: 320px; height: 320px; left: 46%; bottom: -130px;
  background: radial-gradient(circle, rgba(43,134,184,.55), transparent 70%);
  animation: float3 16s ease-in-out infinite;
}
.hero-inner, .page-hero .container { position: relative; z-index: 1; }
@keyframes float1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(44px,-34px)} }
@keyframes float2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-54px,42px)} }
@keyframes float3 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(34px,34px)} }

/* 鼠标跟随光 */
.hero-cursor {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(53,224,255,.16), transparent 70%);
  transform: translate(-50%, -50%); pointer-events: none; z-index: 0;
  mix-blend-mode: screen; opacity: 0; transition: opacity .35s;
}
.hero:hover .hero-cursor { opacity: 1; }

/* 标题发光 */
.hero h1 { text-shadow: 0 0 32px rgba(53,224,255,.16); }
.hero h1 .hl { text-shadow: 0 0 26px rgba(53,224,255,.5); }

/* 按钮流光 */
.btn { position: relative; overflow: hidden; }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--neon));
  box-shadow: 0 10px 30px rgba(43,134,184,.42);
}
.btn-primary::before {
  content: ""; position: absolute; top: 0; left: -60%; width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.55), transparent);
  transform: skewX(-20deg); animation: sheen 4.5s infinite;
}
@keyframes sheen { 0%{left:-60%} 55%,100%{left:130%} }
.btn-primary:hover {
  background: linear-gradient(120deg, var(--ink), var(--accent));
  box-shadow: 0 16px 40px rgba(53,224,255,.35);
}
.btn-ghost:hover {
  box-shadow: 0 0 0 3px rgba(53,224,255,.12), 0 8px 24px rgba(43,134,184,.18);
}

/* 卡片玻璃拟态 + 发光 hover */
.card {
  background: linear-gradient(160deg, rgba(255,255,255,.94), rgba(255,255,255,.8));
  backdrop-filter: blur(6px);
  border: 1px solid rgba(43,134,184,.14);
  box-shadow: var(--shadow-sm);
}
.card .ico {
  background: linear-gradient(135deg, var(--accent-soft), rgba(53,224,255,.16));
  color: var(--accent); box-shadow: inset 0 0 0 1px rgba(43,134,184,.12);
}
.card:hover {
  transform: translateY(-8px); border-color: rgba(53,224,255,.5);
  box-shadow: 0 18px 44px rgba(15,34,56,.12), 0 0 0 1px rgba(53,224,255,.25), 0 12px 40px rgba(53,224,255,.18);
}

/* eyebrow 发光点 */
.eyebrow::before {
  content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--neon); margin-right: 10px; box-shadow: 0 0 10px var(--neon); vertical-align: middle;
}

/* chips 发光 */
.chip:hover {
  border-color: var(--neon); color: var(--accent); background: rgba(53,224,255,.08);
  box-shadow: 0 0 18px rgba(53,224,255,.22);
}

.nav-cta { background: linear-gradient(120deg, var(--ink), var(--accent)); }
.nav-cta:hover { background: linear-gradient(120deg, var(--accent), var(--neon)); box-shadow: 0 8px 24px rgba(53,224,255,.3); }

/* 案例封面扫光 */
.case-card .cover::before {
  content: ""; position: absolute; top: 0; left: -60%; width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg); animation: sheen 5s infinite; z-index: 1;
}

/* CTA 光晕 */
.cta-inner::after {
  content: ""; position: absolute; width: 380px; height: 380px; right: -80px; top: -120px;
  background: radial-gradient(circle, rgba(53,224,255,.4), transparent 70%);
  filter: blur(50px); pointer-events: none; z-index: 0; animation: float2 12s ease-in-out infinite;
}
.cta-band { position: relative; z-index: 1; }

/* 联系页科技底光 */
.contact-zone { position: relative; overflow: hidden; }
.contact-zone .glow {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .4; pointer-events: none; z-index: 0;
}
.contact-zone .glow.c1 { width: 360px; height: 360px; right: -60px; top: 40px; background: radial-gradient(circle, rgba(53,224,255,.5), transparent 70%); }
.contact-zone .glow.c2 { width: 300px; height: 300px; left: -60px; bottom: -40px; background: radial-gradient(circle, rgba(138,107,255,.4), transparent 70%); }
.contact-wrap { position: relative; z-index: 1; }

/* 滚动进度条 */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 200;
  background: linear-gradient(90deg, var(--accent), var(--neon), var(--violet));
  box-shadow: 0 0 12px rgba(53,224,255,.6);
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .glow, .hero-cursor, .btn-primary::before, .cta-inner::after { animation: none !important; }
}