/* ============================================================
   长沙兰软信息科技有限公司 官网样式
   深蓝医疗科技风：primary #0E3A5D / deep #08233B / accent #29ABE2
   ============================================================ */
:root {
  --primary: #0E3A5D;
  --deep: #08233B;
  --accent: #29ABE2;
  --ink: #12283C;
  --body: #3D5266;
  --gray: #7A8CA0;
  --line: #D9E4EE;
  --soft: #F2F7FB;
  --white: #FFFFFF;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(14, 58, 93, .08);
  --shadow-lg: 0 12px 40px rgba(14, 58, 93, .14);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--body);
  line-height: 1.7;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 通用版块 ---------- */
.section { padding: 88px 0; }
.section--soft { background: var(--soft); }
.section--deep {
  background: linear-gradient(135deg, var(--primary), var(--deep));
  color: rgba(255, 255, 255, .82);
}
.kicker {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title {
  color: var(--ink);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
}
.section--deep .section-title { color: var(--white); }
.section-sub { margin-top: 12px; font-size: 16px; color: var(--gray); max-width: 720px; }
.section--deep .section-sub { color: #9DB8CC; }
.title-bar { width: 48px; height: 4px; background: var(--accent); border-radius: 2px; margin-top: 20px; }
.section-head { margin-bottom: 48px; }
.section-head--center { text-align: center; }
.section-head--center .section-sub { margin-left: auto; margin-right: auto; }
.section-head--center .title-bar { margin-left: auto; margin-right: auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 13px 32px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: all .25s ease;
  cursor: pointer;
}
.btn--primary { background: var(--accent); color: var(--white); }
.btn--primary:hover { background: #1d96c9; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(41, 171, 226, .35); }
.btn--ghost { border: 1.5px solid rgba(255, 255, 255, .55); color: var(--white); }
.btn--ghost:hover { border-color: var(--white); background: rgba(255, 255, 255, .08); }
.btn--outline { border: 1.5px solid var(--accent); color: var(--accent); }
.btn--outline:hover { background: var(--accent); color: var(--white); }

/* ---------- 头部导航 ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: all .3s ease;
  background: transparent;
}
.header.scrolled { background: rgba(8, 35, 59, .96); box-shadow: 0 2px 16px rgba(0, 0, 0, .25); backdrop-filter: blur(8px); }
.header--solid { background: var(--deep); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.header-logo img { height: 34px; }
.nav { display: flex; align-items: center; gap: 34px; }
.nav a { color: rgba(255, 255, 255, .85); font-size: 15px; transition: color .2s; position: relative; }
.nav a:hover, .nav a.active { color: var(--accent); }
.nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 2px; background: var(--accent);
}
.nav-tel { color: var(--white); font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.nav-tel svg { width: 16px; height: 16px; fill: var(--accent); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--white); margin: 5px 0; transition: .3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  color: var(--white);
  background: var(--deep);
  overflow: hidden;
}
.hero-bg { position: absolute; top: 0; right: 0; bottom: 0; left: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.hero-bg::after {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  background: linear-gradient(100deg, rgba(8, 35, 59, .92) 15%, rgba(8, 35, 59, .45) 65%, rgba(14, 58, 93, .25));
}
.hero-content { position: relative; z-index: 2; padding: 160px 0 110px; max-width: 720px; }
.hero-kicker { color: var(--accent); letter-spacing: 6px; font-size: 14px; font-weight: 700; margin-bottom: 18px; }
.hero h1 { font-size: 46px; line-height: 1.28; font-weight: 700; color: var(--white); }
.hero-sub { margin-top: 20px; font-size: 17px; color: #C9DAE8; }
.hero-actions { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  position: relative; z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, .18);
  margin-top: 60px; padding-top: 28px;
  display: flex; gap: 56px; flex-wrap: wrap;
}
.hero-stats .num { font-size: 30px; font-weight: 700; color: var(--accent); }
.hero-stats .lbl { font-size: 13px; color: #9DB8CC; margin-top: 2px; }

/* ---------- 页头横幅（子页） ---------- */
.page-banner {
  position: relative;
  padding: 150px 0 80px;
  background: linear-gradient(120deg, var(--primary), var(--deep));
  color: var(--white);
  overflow: hidden;
}
.page-banner::after {
  content: ""; position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; border-radius: 50%;
  border: 60px solid rgba(41, 171, 226, .12);
}
.page-banner h1 { font-size: 38px; font-weight: 700; position: relative; z-index: 2; }
.page-banner .breadcrumb { color: #8FA9BE; font-size: 14px; margin-top: 12px; position: relative; z-index: 2; }
.page-banner .breadcrumb a:hover { color: var(--accent); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 24px; }
.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: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #155482);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg { width: 24px; height: 24px; fill: var(--accent); }
.card h3 { color: var(--ink); font-size: 18px; margin-bottom: 10px; }
.card p { font-size: 14px; color: var(--body); }

/* ---------- 痛点 ---------- */
.pain-card { border-top: 3px solid var(--accent); }
.pain-num { color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: 2px; margin-bottom: 14px; }

/* ---------- 方案介绍（图文并排） ---------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.split-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.split-list li {
  display: flex; gap: 14px; margin-top: 20px; font-size: 15px;
}
.split-list .dot {
  flex: none; width: 22px; height: 22px; margin-top: 3px; border-radius: 50%;
  background: rgba(41, 171, 226, .15); display: flex; align-items: center; justify-content: center;
}
.split-list .dot svg { width: 11px; height: 11px; fill: var(--accent); }
.split-list strong { color: var(--ink); }

/* ---------- 专利横幅 ---------- */
.patent {
  border-radius: var(--radius);
  background: linear-gradient(120deg, var(--primary), var(--deep));
  color: var(--white);
  padding: 44px 48px;
  display: flex; align-items: center; gap: 40px; flex-wrap: wrap;
}
.patent-badge {
  flex: none; width: 84px; height: 84px; border-radius: 50%;
  border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
}
.patent-badge svg { width: 38px; height: 38px; fill: var(--accent); }
.patent h3 { font-size: 22px; margin-bottom: 6px; }
.patent .no { color: var(--accent); font-weight: 700; }
.patent p { color: #B9CBDB; font-size: 14.5px; }

/* ---------- 案例卡片 ---------- */
.case-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .25s ease;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case-card .thumb { height: 210px; overflow: hidden; }
.case-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .thumb img { transform: scale(1.05); }
.case-card .info { padding: 22px 24px 26px; }
.case-card .city { font-size: 12.5px; color: var(--accent); font-weight: 600; letter-spacing: 1px; }
.case-card h3 { color: var(--ink); font-size: 17px; margin: 6px 0 8px; line-height: 1.45; }
.case-card p { font-size: 13.5px; color: var(--gray); }
.case-note { margin-top: 28px; font-size: 13px; color: var(--gray); }

/* ---------- 客户墙 ---------- */
.client-cloud { display: flex; flex-wrap: wrap; gap: 14px; }
.client-tag {
  background: var(--white); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 20px; font-size: 14.5px; color: var(--ink); transition: all .2s;
}
.client-tag:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.client-tag--star { border-color: var(--accent); background: rgba(41, 171, 226, .07); }
.region-title { color: var(--ink); font-size: 19px; font-weight: 700; margin: 40px 0 18px; display: flex; align-items: center; gap: 10px; }
.region-title::before { content: ""; width: 5px; height: 18px; background: var(--accent); border-radius: 3px; }

/* ---------- 时间线 ---------- */
.timeline { position: relative; padding-left: 28px; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding-bottom: 34px; }
.timeline li::before {
  content: ""; position: absolute; left: -36px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--accent);
}
.timeline .year { color: var(--accent); font-weight: 700; font-size: 16px; }
.timeline p { color: var(--body); font-size: 14.5px; margin-top: 4px; }

/* ---------- 联系卡 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.contact-line { display: flex; gap: 16px; align-items: flex-start; margin-top: 24px; }
.contact-line svg { flex: none; width: 20px; height: 20px; fill: var(--accent); margin-top: 4px; }
.contact-line .t { color: var(--ink); font-weight: 600; font-size: 15px; }
.contact-line .v { color: var(--body); font-size: 15px; }
.qr-box { text-align: center; }
.qr-box img { width: 220px; margin: 0 auto; border-radius: 8px; border: 1px solid var(--line); }
.qr-box .cap { margin-top: 12px; font-size: 13.5px; color: var(--gray); }
.contact-cta { background: linear-gradient(150deg, var(--deep), var(--primary)); border-radius: 14px; padding: 40px 36px; color: var(--white); }
.contact-cta h3 { font-size: 21px; margin-bottom: 12px; }
.contact-cta p { color: #B9CBDB; font-size: 14.5px; line-height: 1.9; margin-bottom: 26px; }
.contact-cta-btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 产品矩阵 ---------- */
.prod-tag { display: inline-block; font-size: 12px; padding: 3px 12px; border-radius: 20px; background: rgba(41,171,226,.12); color: var(--accent); font-weight: 600; letter-spacing: 1px; }
.prod-tag--deep { background: rgba(14,58,93,.1); color: var(--primary); }
.prod-tag--gold { background: #FFF3E2; color: #B97B1E; }
.prod-name { font-size: 19px; margin-top: 14px; color: var(--ink); }
.prod-sub { font-size: 13.5px; color: var(--accent); margin-top: 6px; font-weight: 600; }
.prod-desc { margin-top: 12px; font-size: 14px; color: var(--body); line-height: 1.9; }
.prod-chips { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.prod-chips span { font-size: 12.5px; color: var(--primary); border: 1px solid var(--line); border-radius: 20px; padding: 3px 12px; background: var(--soft); }
.prod-link { display: inline-block; margin-top: 16px; font-size: 14px; color: var(--accent); font-weight: 600; text-decoration: none; }
.prod-link:hover { text-decoration: underline; }

/* ---------- CTA 条 ---------- */
.cta-band { text-align: center; }
.cta-band h2 { color: var(--white); font-size: 30px; margin-bottom: 14px; }
.cta-band p { color: #B9CBDB; margin-bottom: 30px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--deep); color: #8FA9BE; padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-logo img { height: 34px; margin-bottom: 16px; }
.footer h4 { color: var(--white); font-size: 15px; margin-bottom: 16px; }
.footer li { margin-bottom: 10px; }
.footer a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0; text-align: center; font-size: 13px; color: #6E8399;
}
.footer-bottom a { color: #6E8399; }
.footer-bottom a:hover { color: var(--accent); }

/* ---------- 返回顶部 ---------- */
.backtop {
  position: fixed; right: 28px; bottom: 28px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); border: none; cursor: pointer;
  display: none; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg); transition: background .2s;
}
.backtop:hover { background: var(--accent); }
.backtop svg { width: 18px; height: 18px; fill: var(--white); }
.backtop.show { display: flex; }

/* ---------- 在线预约 ---------- */
.bk-float {
  position: fixed; right: 28px; bottom: 88px; z-index: 90;
  padding: 12px 22px; border-radius: 24px; border: none; cursor: pointer;
  background: var(--accent); color: #fff; font-size: 14.5px; font-weight: 600;
  box-shadow: 0 8px 22px rgba(41,171,226,.45); transition: transform .2s, background .2s;
}
.bk-float:hover { background: #1d96c9; transform: translateY(-2px); }
.bk-mask {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 200; background: rgba(8,35,59,.55);
  display: none; align-items: center; justify-content: center; padding: 20px;
  backdrop-filter: blur(2px);
}
.bk-mask.show { display: flex; }
.bk-modal {
  background: #fff; border-radius: 14px; width: 100%; max-width: 430px;
  padding: 34px 34px 28px; position: relative; box-shadow: 0 24px 60px rgba(8,35,59,.35);
  animation: bkIn .25s ease;
}
@keyframes bkIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.bk-close {
  position: absolute; top: 12px; right: 14px; width: 32px; height: 32px;
  border: none; background: none; font-size: 22px; color: var(--gray); cursor: pointer; line-height: 1;
}
.bk-close:hover { color: var(--ink); }
.bk-modal h3 { font-size: 21px; color: var(--ink); }
.bk-sub { font-size: 13.5px; color: var(--gray); margin-top: 8px; line-height: 1.7; }
.bk-field { margin-top: 16px; }
.bk-field label { display: block; font-size: 13.5px; color: var(--ink); font-weight: 600; margin-bottom: 6px; }
.bk-field label em { color: #D84C4C; font-style: normal; }
.bk-field label span { color: var(--gray); font-weight: 400; font-size: 12.5px; }
.bk-field input {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14.5px; color: var(--ink); outline: none; transition: border-color .2s;
  box-sizing: border-box;
}
.bk-field input:focus { border-color: var(--accent); }
.bk-hp { position: absolute; left: -9999px; top: -9999px; height: 0; overflow: hidden; }
.bk-submit {
  width: 100%; margin-top: 22px; padding: 13px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 15.5px; font-weight: 600; cursor: pointer;
  transition: background .2s;
}
.bk-submit:hover { background: #1d96c9; }
.bk-submit[disabled] { opacity: .6; cursor: not-allowed; }
.bk-msg { margin-top: 12px; font-size: 13.5px; text-align: center; min-height: 20px; }
.bk-msg.ok { color: #1E9E6A; }
.bk-msg.err { color: #D84C4C; }
@media (max-width: 640px) {
  .bk-float { right: 18px; bottom: 82px; padding: 10px 18px; font-size: 13.5px; }
  .bk-modal { padding: 26px 22px 22px; }
}

/* ---------- 滚动渐显 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .grid--3, .grid--4, .grid--2 { grid-template-columns: 1fr; }
  .nav {
    position: fixed; top: 72px; right: 0; left: 0;
    background: var(--deep); flex-direction: column;
    padding: 24px; gap: 20px; display: none;
    border-top: 1px solid rgba(255, 255, 255, .1);
  }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-tel { display: none; }
  .hero { min-height: 560px; }
  .hero h1 { font-size: 28px; }
  .hero-stats { gap: 28px; }
  .section-title { font-size: 25px; }
  .page-banner h1 { font-size: 28px; }
  .patent { padding: 30px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* 客户案例：省份双列布局 + 数量占位卡 */
.prov-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 48px; }
.case-card--more {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--soft); border: 1px dashed #B9CBDB; text-align: center; padding: 30px 20px;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.case-card--more .more-top { font-size: 14px; font-weight: 600; color: #54708C; letter-spacing: 2px; }
.case-card--more .more-num { margin-top: 8px; font-size: 54px; font-weight: 800; color: var(--accent); line-height: 1.1; }
.case-card--more .more-num span { font-size: 22px; font-weight: 600; margin-left: 4px; }
.case-card--more .more-num--text { font-size: 30px; letter-spacing: 2px; }
.case-card--name { display: flex; flex-direction: column; justify-content: center; padding: 26px 24px; border-left: 3px solid var(--accent); }
.case-card--more .more-sub { margin-top: 12px; font-size: 14px; color: var(--accent); letter-spacing: 1px; }
@media (max-width: 960px) {
  .prov-duo { grid-template-columns: 1fr; }
}

/* OFD 专栏：评审要求对照表 */
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(15,43,70,.06); font-size: 14px; }
.spec-table th { background: var(--deep); color: #fff; text-align: left; padding: 14px 18px; font-weight: 600; letter-spacing: 1px; }
.spec-table td { padding: 16px 18px; border-bottom: 1px solid #E8EFF5; color: #3D5266; line-height: 1.8; vertical-align: top; }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table td strong { color: var(--primary); }