/* =========================================================
   云医创想官网 全局样式
   Medical Data AI | 智慧赋能，重塑医院运营效能
   ========================================================= */
:root {
  --primary: #0077f6;
  --primary-dark: #0062d1;
  --primary-light: #e6f2ff;
  --accent: #4ada7c;
  --accent-2: #f3b13d;
  --accent-light: #e8faf0;
  --dark: #132a45;
  --text: #3d4c5f;
  --text-light: #6b7c90;
  --bg: #ffffff;
  --bg-gray: #f4f7fc;
  --border: #e3eaf2;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(0, 119, 246, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 119, 246, 0.14);
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { 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: 1.8;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }

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

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-img { height: 46px; width: auto; display: block; }
.footer-brand .logo-img { height: 40px; }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
  padding: 8px 16px; border-radius: 8px; font-size: 16px; color: var(--text); font-weight: 500;
}
.nav-menu a:hover { color: var(--primary); background: var(--primary-light); }
.nav-menu a.active { color: var(--primary); font-weight: 600; }
.nav-cta {
  background: var(--primary); color: #fff !important; padding: 9px 20px !important;
  border-radius: 8px; font-weight: 600;
}
.nav-cta:hover { background: var(--primary-dark); }
.nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--dark); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); color: #b9c6d8; padding: 56px 0 24px; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand p { font-size: 14px; margin-top: 14px; max-width: 340px; color: #93a3b8; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-col a { display: block; color: #93a3b8; font-size: 14px; padding: 5px 0; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 12px; color: #7a8ba0;
}
.footer-bottom a { color: #7a8ba0; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-gray { background: var(--bg-gray); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.section-head-wide { max-width: 1080px; }
.section-tag {
  display: inline-block; padding: 4px 14px; border-radius: 100px;
  background: var(--primary-light); color: var(--primary);
  font-size: 14px; font-weight: 600; margin-bottom: 14px;
}
.section-head h2 { font-size: 34px; color: var(--dark); margin-bottom: 12px; letter-spacing: .5px; line-height: 1.5; }
.section-head p { color: var(--text-light); font-size: 17px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; padding: 12px 30px; border-radius: 10px;
  font-size: 15px; font-weight: 600; cursor: pointer; border: none;
  transition: all .2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,119,246,.3); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.15); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--primary);
  color: #fff; padding: 96px 0;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 80% 20%, rgba(255,255,255,.08), transparent 60%),
    radial-gradient(500px 260px at 10% 90%, rgba(255,255,255,.06), transparent 60%);
}
.hero-inner { position: relative; text-align: left; max-width: 1100px; margin: 0 auto; }
.hero-title { font-size: 44px; line-height: 1.35; margin-bottom: 24px; letter-spacing: 1px; }
.hero-title .hero-line-1 { display: block; font-size: 52px; font-weight: 800; letter-spacing: 2px; }
.hero-title .hero-plus {
  display: inline-block; font-size: 30px; font-weight: 800;
  color: #b8d8ff; vertical-align: super; margin-left: 4px; line-height: 1;
}
.hero-title .hero-line-2 { display: block; font-size: 44px; font-weight: 600; margin-top: 6px; }
.hero p.lead { font-size: 17px; color: rgba(255,255,255,.88); max-width: 780px; margin: 0 0 28px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero 右侧产品面板 */
.hero-panel {
  background: #fff; border-radius: 18px; padding: 28px; color: var(--text);
  box-shadow: 0 24px 60px rgba(0,0,0,.22);
}
.hero-panel h3 { color: var(--dark); font-size: 17px; margin-bottom: 18px; }
.panel-item {
  display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px dashed var(--border); align-items: flex-start;
}
.panel-item:last-child { border-bottom: none; }
.panel-ico {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.panel-item b { display: block; font-size: 14.5px; color: var(--dark); }
.panel-item span { font-size: 12.5px; color: var(--text-light); line-height: 1.5; display: block; margin-top: 2px; }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-grid-2col { grid-template-columns: repeat(2, 1fr); gap: 28px; }
.product-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 28px; transition: all .25s; position: relative; overflow: hidden;
}
.product-card::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transition: transform .3s; transform-origin: left;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
.product-card:hover::after { transform: scaleX(1); }
.product-ico {
  width: 56px; height: 56px; border-radius: 14px; font-size: 26px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.product-card h3 { font-size: 21px; color: var(--dark); margin-bottom: 6px; }
.product-card .product-value {
  font-size: 16px; font-weight: 700; color: var(--primary);
  margin-bottom: 10px; min-height: 0;
}
.product-card p { font-size: 15px; color: var(--text-light); margin-bottom: 16px; line-height: 1.8; }
.product-card .link { font-size: 15px; font-weight: 600; }
.ico-blue { background: var(--primary-light); }
.ico-teal { background: var(--accent-light); }
.ico-green { background: #e8f7ef; }
.ico-purple { background: #f0ecfb; }
.c-blue { color: var(--primary); } .c-teal { color: var(--accent); }
.c-green { color: #16a05d; } .c-purple { color: #7c5cd6; }

/* ---------- 功能特性 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: all .25s;
}
.feature:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.feature .num { font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 2px; }
.feature h3 { font-size: 18px; color: var(--dark); margin: 8px 0 8px; }
.feature p { font-size: 15px; color: var(--text-light); }

/* ---------- 数据条 ---------- */
.data-band { background: var(--dark); color: #fff; }
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.data-grid .item b { font-size: 34px; color: #6fd4d9; display: block; }
.data-grid .item span { font-size: 15px; color: #9fb0c5; }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; transition: all .25s;
}
.case-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.case-card .tag {
  display: inline-block; font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 100px;
  background: var(--primary-light); color: var(--primary); margin-bottom: 12px;
}
.case-card h3 { font-size: 17px; color: var(--dark); margin-bottom: 8px; }
.case-card p { font-size: 14.5px; color: var(--text-light); }
.case-card .metric { display: flex; gap: 18px; margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--border); }
.case-card .metric b { font-size: 18px; color: var(--primary); display: block; }
.case-card .metric span { font-size: 12.5px; color: var(--text-light); }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding: 20px 0 0; font-size: 13px; color: var(--text-light); }
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--text); }

/* ---------- 产品页 Hero ---------- */
.product-hero { background: var(--primary); color: #fff; padding: 64px 0; }
.product-hero h1 { font-size: 40px; margin-bottom: 12px; }
.product-hero .sub { font-size: 17px; color: rgba(255,255,255,.85); max-width: 720px; }
.product-hero .meta { display: flex; gap: 24px; margin-top: 20px; flex-wrap: wrap; }
.product-hero .meta span { font-size: 14px; background: rgba(255,255,255,.14); padding: 5px 14px; border-radius: 100px; }

/* ---------- 步骤流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: step; }
.step { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; position: relative; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  position: absolute; top: 18px; right: 22px; font-size: 42px; font-weight: 800; color: var(--primary-light);
}
.step h3 { font-size: 18px; color: var(--dark); margin-bottom: 10px; position: relative; z-index: 1; }
.step p { font-size: 15px; color: var(--text-light); position: relative; z-index: 1; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 14px; overflow: hidden; background: #fff; }
.faq-q { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; cursor: pointer; font-weight: 600; color: var(--dark); font-size: 16px; }
.faq-q .arrow { transition: transform .25s; color: var(--primary); font-size: 13px; }
.faq-item.open .arrow { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 24px 18px; font-size: 15px; color: var(--text-light); }

/* ---------- 表格 ---------- */
.tbl { width: 100%; border-collapse: collapse; font-size: 14.5px; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); }
.tbl th { background: var(--primary-light); color: var(--primary-dark); padding: 13px 16px; text-align: left; font-weight: 600; }
.tbl td { padding: 13px 16px; border-bottom: 1px solid var(--border); color: var(--text); }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: #fafcff; }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: var(--primary);
  border-radius: 20px; padding: 52px 40px; text-align: center; color: #fff; margin: 72px 0;
}
.cta-band h2 { font-size: 30px; margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,.85); margin-bottom: 24px; font-size: 15px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 22px; align-items: flex-start; }
.contact-item .ci-ico { width: 44px; height: 44px; border-radius: 11px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; font-size: 19px; flex-shrink: 0; }
.contact-item b { display: block; color: var(--dark); font-size: 16px; }
.contact-item span, .contact-item a { font-size: 15px; color: var(--text-light); }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 9px;
  font-size: 14px; font-family: var(--font); background: #fbfdff;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,119,246,.1); }
.form-row textarea { resize: vertical; min-height: 110px; }

/* ---------- 关于页 ---------- */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: var(--border); }
.tl-item { position: relative; padding: 0 0 30px 22px; }
.tl-item::before { content: ""; position: absolute; left: -28px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--primary); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--primary-light); }
.tl-item b { color: var(--dark); font-size: 15px; }
.tl-item p { font-size: 13.5px; color: var(--text-light); margin-top: 4px; }

/* ---------- 响应式 ----------
   断点规划（含折叠屏适配）：
   ≤1200px 中桌面    ≤1024px 平板横屏   ≤992px 平板
   ≤900px  折叠屏展开(840-910px) ≤768px 平板竖屏/折叠屏小端
   ≤640px  手机     ≤480px 小屏手机
   -------------------------------------------------- */
@media (max-width: 1200px) {
  .container { padding: 0 20px; }
}

@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title .hero-line-1 { font-size: 44px; }
  .hero-title .hero-line-2 { font-size: 38px; }
}

@media (max-width: 992px) {
  .hero-inner { grid-template-columns: 1fr; }
  .product-stats { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  #hospitalList { grid-template-columns: repeat(2, 1fr) !important; }
  #chinaMap { height: 500px !important; }
  .section-head h2 { font-size: 30px; }
}

/* 折叠屏展开态（约 840-910px 宽）专用断点 */
@media (max-width: 900px) {
  .nav-menu {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 12px 20px;
    border-bottom: 1px solid var(--border); box-shadow: 0 12px 32px rgba(0,0,0,.1);
    max-height: calc(100vh - 72px); overflow-y: auto;
  }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-menu a { padding: 13px 16px; font-size: 16px; border-radius: 8px; }
  .nav-menu a:hover { background: var(--primary-light); }
  .nav-cta { text-align: center; margin-top: 6px; }
  .hero { padding: 68px 0; }
  .hero-title .hero-line-1 { font-size: 40px; }
  .hero-title .hero-line-2 { font-size: 34px; }
  .hero p.lead { font-size: 16px; }
  .product-hero h1 { font-size: 34px; }
  .product-hero { padding: 52px 0; }
  .section { padding: 56px 0; }
  .cta-band { padding: 40px 28px; margin: 56px 0; }
  .cta-band h2 { font-size: 26px; }
  .data-grid .item b { font-size: 28px; }
}

/* 平板竖屏 / 折叠屏小端（约 700-840px） */
@media (max-width: 768px) {
  .hero { padding: 56px 0; }
  .hero-title .hero-line-1 { font-size: 36px; }
  .hero-title .hero-line-2 { font-size: 30px; }
  .hero-title { font-size: 34px; }
  .section { padding: 48px 0; }
  .section-head { margin-bottom: 34px; }
  .section-head h2 { font-size: 26px; }
  .product-hero h1 { font-size: 30px; }
  .product-hero .sub { font-size: 15.5px; }
  .product-card { padding: 24px 22px; }
  .product-card h3 { font-size: 19px; }
  .feature, .case-card, .step { padding: 22px; }
  .data-grid .item b { font-size: 26px; }
  .data-grid { gap: 16px; }
  #chinaMap { height: 460px !important; }
  .faq-q { padding: 17px 20px; font-size: 15px; }
  .faq-a p { padding: 0 20px 16px; font-size: 14.5px; }
  .contact-card { padding: 24px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .product-grid, .feature-grid, .case-grid, .steps, .hero-stats { grid-template-columns: 1fr; }
  .product-stats { grid-template-columns: 1fr; }
  .product-grid-2col { grid-template-columns: 1fr; gap: 20px; }
  .hero { padding: 48px 0; }
  .hero-title .hero-line-1 { font-size: 32px; }
  .hero-title .hero-line-2 { font-size: 26px; }
  .hero-title .hero-plus { font-size: 22px; }
  .hero-title { margin-bottom: 16px; }
  .hero p.lead { font-size: 15px; margin-bottom: 22px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .section { padding: 44px 0; }
  .section-head h2 { font-size: 24px; }
  .section-tag { font-size: 13px; }
  .product-hero { padding: 42px 0; }
  .product-hero h1 { font-size: 26px; }
  .product-hero .meta { gap: 10px; margin-top: 16px; }
  .product-hero .meta span { font-size: 12.5px; padding: 4px 12px; }
  .product-card { padding: 22px 20px; }
  .product-ico { width: 50px; height: 50px; font-size: 23px; margin-bottom: 14px; }
  .feature, .case-card, .step { padding: 20px; }
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 18px 12px; }
  .data-grid .item b { font-size: 24px; }
  .cta-band { padding: 34px 20px; margin: 44px 0; }
  .cta-band h2 { font-size: 22px; }
  .cta-band .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .site-footer { padding: 44px 0 20px; margin-top: 56px; }
  .footer-bottom { margin-top: 28px; }
  #hospitalList { grid-template-columns: 1fr !important; }
  #chinaMap { height: 400px !important; }
  .contact-grid { gap: 28px; }
  .contact-item { gap: 12px; }
  .contact-item .ci-ico { width: 40px; height: 40px; font-size: 17px; }
  .step::before { font-size: 34px; }
  .tbl th, .tbl td { padding: 10px 12px; font-size: 13px; }
}

/* 小屏手机（≤480px，如 iPhone SE 等） */
@media (max-width: 480px) {
  .nav-wrap { height: 64px; }
  .logo-img { height: 38px; }
  .footer-brand .logo-img { height: 34px; }
  .nav-menu { top: 64px; max-height: calc(100vh - 64px); }
  .hero { padding: 40px 0; }
  .hero-title .hero-line-1 { font-size: 27px; }
  .hero-title .hero-line-2 { font-size: 22px; }
  .hero-title .hero-plus { font-size: 19px; }
  .hero-title { margin-bottom: 14px; }
  .section { padding: 38px 0; }
  .section-head h2 { font-size: 21px; }
  .section-head p { font-size: 14.5px; }
  .product-hero h1 { font-size: 23px; }
  .product-hero .sub { font-size: 14.5px; }
  .product-hero .meta span { font-size: 12px; }
  .product-card h3 { font-size: 18px; }
  .data-grid .item b { font-size: 21px; }
  .data-grid .item span { font-size: 13px; }
  .cta-band { padding: 30px 18px; }
  .cta-band h2 { font-size: 20px; }
  .cta-band p { font-size: 14px; }
  .contact-card { padding: 20px; }
  .faq-q { padding: 15px 16px; }
  .faq-a p { padding: 0 16px 14px; }
  #chinaMap { height: 360px !important; }
  .product-hero .meta { gap: 8px; }
}