/* =========================================================
   洁诺口腔 JIENUO DENTAL · 站点全局样式
   主题：专业洗牙机构 · 医疗洁净感 · 清新青绿色系
   ========================================================= */

/* ---------- 字体（本地化） ---------- */
@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-latin-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F, U+20A0-20BF, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-latin-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F, U+20A0-20BF, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-latin-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F, U+20A0-20BF, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-zh-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+3000-303F, U+3400-4DBF, U+4E00-9FFF, U+F900-FAFF, U+FF00-FFEF;
}
@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-zh-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+3000-303F, U+3400-4DBF, U+4E00-9FFF, U+F900-FAFF, U+FF00-FFEF;
}
@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-zh-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+3000-303F, U+3400-4DBF, U+4E00-9FFF, U+F900-FAFF, U+FF00-FFEF;
}

/* ---------- 设计变量 ---------- */
:root {
  --brand: #0F9D8F;
  --brand-dark: #0B7E72;
  --brand-deep: #14343B;
  --brand-soft: #DFF2EE;
  --brand-tint: #EAF7F3;
  --accent: #F2A25C;
  --bg: #F4FAF8;
  --surface: #FFFFFF;
  --ink: #163238;
  --muted: #5D7378;
  --line: #E3EEEC;
  --radius: 18px;
  --shadow-soft: 0 14px 40px rgba(22, 50, 56, 0.08);
  --shadow-brand: 0 18px 44px rgba(15, 157, 143, 0.16);
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
::selection { background: rgba(15, 157, 143, 0.2); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; }
.section.tint { background: var(--bg); }
.section.plain { background: var(--surface); }

/* ---------- 区块标题 ---------- */
.sec-head { max-width: 660px; margin: 0 auto 52px; text-align: center; }
.sec-head.left { margin-left: 0; text-align: left; }
.sec-bar {
  width: 44px; height: 4px; border-radius: 2px;
  background: var(--brand);
  margin: 0 auto 20px;
}
.sec-head.left .sec-bar { margin-left: 0; }
.sec-head h2 { font-size: 34px; font-weight: 700; letter-spacing: 0.5px; line-height: 1.3; }
.sec-head p { margin-top: 14px; color: var(--muted); font-size: 16px; line-height: 1.9; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: 0.5px;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
  white-space: nowrap;
}
.btn.primary { background: var(--brand); color: #fff; box-shadow: 0 10px 24px rgba(15, 157, 143, 0.28); }
.btn.primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(15, 157, 143, 0.34); }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn.light { background: #fff; color: var(--brand-dark); }
.btn.light:hover { background: var(--brand-tint); transform: translateY(-2px); }
.btn .ic { width: 18px; height: 18px; flex: none; }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 80;
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(22, 50, 56, 0.05); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 78px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 42px; height: 42px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text b { font-size: 21px; font-weight: 700; letter-spacing: 2px; color: var(--ink); }
.brand-text i { font-style: normal; font-size: 10px; letter-spacing: 3px; color: var(--brand-dark); font-weight: 500; margin-top: 2px; }

.main-nav ul { display: flex; align-items: center; gap: 36px; }
.nav-link {
  position: relative; display: inline-block;
  padding: 8px 0; font-size: 15px; font-weight: 500; color: var(--ink);
  transition: color .25s ease;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 2px;
  border-radius: 1px; background: var(--brand);
  transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.nav-link:hover { color: var(--brand); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--brand); }

.header-right { display: flex; align-items: center; gap: 22px; }
.header-tel { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 600; font-size: 15px; }
.header-tel .ic { width: 18px; height: 18px; color: var(--brand); }
.header-tel small { display: block; font-size: 11px; font-weight: 400; color: var(--muted); line-height: 1.2; }
.header-tel b { display: block; line-height: 1.25; }

/* 汉堡按钮 */
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
  background: var(--brand-tint);
}
.nav-toggle span { display: block; width: 20px; height: 2px; border-radius: 1px; background: var(--brand-dark); transition: transform .3s ease, opacity .3s ease; }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(720px 420px at 88% -10%, rgba(15, 157, 143, 0.14), transparent 60%),
    radial-gradient(560px 380px at -8% 108%, rgba(242, 162, 92, 0.10), transparent 60%),
    linear-gradient(160deg, var(--brand-tint) 0%, var(--bg) 52%, #fff 100%);
}
.hero::after {
  content: ""; position: absolute; right: -140px; top: 120px; width: 420px; height: 420px;
  border: 1.5px solid rgba(15, 157, 143, 0.22); border-radius: 50%; pointer-events: none;
}
.hero-inner {
  display: grid; grid-template-columns: 1.04fr 0.96fr; gap: 72px; align-items: center;
  padding: 76px 0 104px; position: relative; z-index: 1;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.85); border: 1px solid var(--line);
  font-size: 13.5px; font-weight: 500; color: var(--brand-dark);
  box-shadow: 0 6px 18px rgba(22, 50, 56, 0.05);
}
.hero-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px var(--brand-soft); }
.hero h1 { margin-top: 26px; font-size: 50px; line-height: 1.22; font-weight: 700; letter-spacing: 1px; }
.hero-sub { margin-top: 22px; max-width: 520px; color: var(--muted); font-size: 17px; line-height: 1.95; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 12px 26px; margin-top: 40px; }
.hero-points li { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink); font-weight: 500; }
.hero-points .ic { width: 20px; height: 20px; color: var(--brand); }

.hero-media { position: relative; }
.hero-media .ring {
  position: absolute; inset: -22px -22px auto auto; width: 62%; height: 62%;
  border: 2px solid rgba(15, 157, 143, 0.35); border-radius: 26px; z-index: 0;
}
.hero-img {
  position: relative; z-index: 1; width: 100%; height: 520px; object-fit: cover;
  border-radius: 26px; box-shadow: var(--shadow-brand);
}
.hero-card {
  position: absolute; z-index: 2; left: -30px; bottom: 36px;
  display: flex; align-items: center; gap: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 16px 22px; box-shadow: var(--shadow-soft);
}
.hero-card .num { font-size: 30px; font-weight: 700; color: var(--brand); line-height: 1.1; }
.hero-card .lbl { font-size: 13px; color: var(--muted); line-height: 1.5; }
.hero-card .bar { width: 3px; align-self: stretch; border-radius: 2px; background: var(--brand-soft); }

/* ---------- 数据条 ---------- */
.stats-band { padding: 20px 0 0; }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  background: linear-gradient(120deg, var(--brand-deep) 0%, var(--brand-dark) 60%, var(--brand) 100%);
  border-radius: 24px; padding: 46px 36px; color: #fff;
  position: relative; overflow: hidden;
}
.stats::after {
  content: ""; position: absolute; right: -60px; top: -70px; width: 240px; height: 240px;
  border: 1.5px solid rgba(255, 255, 255, 0.16); border-radius: 50%;
}
.stat { text-align: center; position: relative; z-index: 1; }
.stat b { display: block; font-size: 40px; font-weight: 700; letter-spacing: 1px; line-height: 1.2; }
.stat span { font-size: 14px; opacity: 0.82; margin-top: 8px; display: block; }

/* ---------- 卡片（通用） ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.card:hover { transform: translateY(-5px); border-color: rgba(15, 157, 143, 0.5); box-shadow: var(--shadow-soft); }
.card .icon {
  width: 54px; height: 54px; border-radius: 15px; margin-bottom: 20px;
  background: var(--brand-tint); color: var(--brand);
  display: grid; place-items: center;
}
.card .icon .ic { width: 27px; height: 27px; }
.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--muted); line-height: 1.85; }

/* ---------- 服务预览卡片（带图） ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.svc-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.svc-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); border-color: rgba(15, 157, 143, 0.45); }
.svc-card .photo { position: relative; overflow: hidden; }
.svc-card .photo img { width: 100%; height: 208px; object-fit: cover; transition: transform .5s ease; }
.svc-card:hover .photo img { transform: scale(1.05); }
.svc-card .price-tag {
  position: absolute; right: 14px; top: 14px;
  background: rgba(255, 255, 255, 0.94); color: var(--brand-dark);
  border-radius: 999px; padding: 5px 14px; font-size: 13px; font-weight: 700;
  box-shadow: 0 6px 16px rgba(22, 50, 56, 0.12);
}
.svc-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.svc-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.svc-body p { font-size: 14.5px; color: var(--muted); line-height: 1.85; flex: 1; }
.svc-meta {
  display: flex; align-items: center; gap: 8px; margin-top: 18px;
  font-size: 13px; color: var(--muted);
}
.svc-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line); }
.svc-link {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 14px;
  color: var(--brand); font-size: 14.5px; font-weight: 600;
  transition: gap .25s ease;
}
.svc-link:hover { gap: 10px; }
.svc-link .ic { width: 16px; height: 16px; }

/* ---------- 洁牙流程时间轴 ---------- */
.flow { max-width: 860px; margin: 0 auto; display: grid; grid-template-columns: 92px 44px 1fr; row-gap: 0; }
.flow-step { display: contents; }
.flow-num { padding-top: 4px; text-align: right; font-weight: 700; font-size: 15px; color: var(--brand); letter-spacing: 1px; }
.flow-dot {
  position: relative; justify-self: center; margin-top: 7px;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 3px solid var(--brand);
  box-shadow: 0 0 0 5px var(--brand-tint);
}
.flow-dot::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  top: 23px; bottom: -4px; width: 2px; background: var(--brand-soft);
}
.flow-step:last-child .flow-dot::after { display: none; }
.flow-content { padding: 0 0 46px; }
.flow-step:last-child .flow-content { padding-bottom: 0; }
.flow-content h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.flow-content p { font-size: 14.5px; color: var(--muted); line-height: 1.85; max-width: 540px; }
.flow-content .step-time {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 10px;
  font-size: 13px; color: var(--brand-dark); background: var(--brand-tint);
  padding: 4px 12px; border-radius: 999px; font-weight: 500;
}

/* ---------- 医生卡片 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.doc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .3s ease, box-shadow .3s ease;
}
.doc-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.doc-card .photo { position: relative; overflow: hidden; }
.doc-card .photo img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; transition: transform .5s ease; }
.doc-card:hover .photo img { transform: scale(1.04); }
.doc-tag {
  position: absolute; left: 14px; top: 14px;
  background: rgba(20, 52, 59, 0.78); color: #fff;
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  border-radius: 999px; padding: 5px 13px; font-size: 12.5px; font-weight: 500;
}
.doc-body { padding: 22px 24px 26px; }
.doc-body h3 { font-size: 19px; font-weight: 700; }
.doc-body .title { color: var(--brand-dark); font-size: 14px; font-weight: 600; margin: 5px 0 14px; }
.doc-body .spec { display: flex; flex-wrap: wrap; gap: 8px; }
.doc-body .spec li {
  font-size: 12.5px; color: var(--muted); background: var(--bg);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}
.doc-body .exp { margin-top: 14px; font-size: 13.5px; color: var(--muted); line-height: 1.8; }

/* ---------- 环境图集 ---------- */
.env-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 26px; align-items: stretch; }
.env-item { position: relative; border-radius: var(--radius); overflow: hidden; }
.env-item img { width: 100%; height: 100%; min-height: 380px; object-fit: cover; transition: transform .6s ease; }
.env-item:hover img { transform: scale(1.04); }
.env-cap {
  position: absolute; left: 18px; bottom: 18px;
  background: rgba(20, 52, 59, 0.72); color: #fff;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border-radius: 12px; padding: 10px 18px; font-size: 14px; font-weight: 500;
}

/* ---------- FAQ ---------- */
.faq { max-width: 840px; margin: 0 auto; }
.faq-item {
  background: #fff; border: 1px solid var(--line); border-radius: 15px;
  margin-bottom: 14px; overflow: hidden; transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item[open] { border-color: rgba(15, 157, 143, 0.5); box-shadow: var(--shadow-soft); }
.faq-item summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  padding: 21px 26px; font-size: 16px; font-weight: 600;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .q-mark {
  flex: none; width: 30px; height: 30px; border-radius: 9px;
  background: var(--brand-tint); color: var(--brand-dark);
  display: grid; place-items: center; font-size: 14px; font-weight: 700;
}
.faq-item summary .q-txt { flex: 1; }
.faq-icon { flex: none; width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--line); position: relative; transition: transform .3s ease, border-color .3s ease; }
.faq-icon::before, .faq-icon::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: var(--muted); border-radius: 1px; transition: background .3s ease;
}
.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }
.faq-item[open] .faq-icon { transform: rotate(45deg); border-color: var(--brand); }
.faq-item[open] .faq-icon::before, .faq-item[open] .faq-icon::after { background: var(--brand); }
.faq-body { padding: 2px 26px 24px 62px; color: var(--muted); font-size: 14.5px; line-height: 1.95; }

/* ---------- CTA 通栏 ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, var(--brand-deep) 0%, var(--brand-dark) 100%);
  border-radius: 26px; color: #fff;
  padding: 56px 60px; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.cta-band::after {
  content: ""; position: absolute; left: -70px; bottom: -110px; width: 300px; height: 300px;
  border: 1.5px solid rgba(255, 255, 255, 0.14); border-radius: 50%;
}
.cta-band h2 { font-size: 30px; font-weight: 700; letter-spacing: 0.5px; }
.cta-band p { margin-top: 12px; font-size: 15.5px; opacity: 0.85; line-height: 1.8; max-width: 560px; }
.cta-side { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; position: relative; z-index: 1; }
.cta-side .note { font-size: 13px; opacity: 0.75; display: inline-flex; align-items: center; gap: 8px; }
.cta-side .note .ic { width: 16px; height: 16px; }

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative; overflow: hidden;
  padding: 66px 0 60px; text-align: center;
  background:
    radial-gradient(600px 360px at 90% -20%, rgba(15, 157, 143, 0.15), transparent 60%),
    radial-gradient(520px 320px at 0% 110%, rgba(242, 162, 92, 0.10), transparent 60%),
    linear-gradient(160deg, var(--brand-tint) 0%, var(--bg) 60%, #fff 100%);
}
.page-hero h1 { font-size: 38px; font-weight: 700; letter-spacing: 1px; }
.page-hero p { margin: 16px auto 0; max-width: 620px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--brand-dark); font-weight: 500; }
.crumbs .sep { margin: 0 8px; opacity: 0.6; }

/* ---------- 服务详情块 ---------- */
.svc-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  padding: 60px 0; border-bottom: 1px dashed var(--line);
}
.svc-block:first-of-type { padding-top: 16px; }
.svc-block:last-of-type { border-bottom: 0; }
.svc-media { position: relative; }
.svc-media img { width: 100%; height: 400px; object-fit: cover; border-radius: 22px; box-shadow: var(--shadow-soft); }
.svc-media .num-badge {
  position: absolute; left: -16px; top: -16px; width: 62px; height: 62px;
  background: var(--brand); color: #fff; border-radius: 18px;
  display: grid; place-items: center; font-size: 22px; font-weight: 700;
  box-shadow: var(--shadow-brand); transform: rotate(-6deg);
}
.svc-info h3 { font-size: 26px; font-weight: 700; letter-spacing: 0.5px; }
.svc-info .lead { margin: 14px 0 20px; color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.svc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.svc-tags li {
  font-size: 13px; color: var(--brand-dark); background: var(--brand-tint);
  border-radius: 999px; padding: 5px 14px; font-weight: 500;
}
.svc-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--ink); line-height: 1.8; padding: 6px 0; }
.svc-points .ic { flex: none; width: 19px; height: 19px; color: var(--brand); margin-top: 5px; }
.svc-foot {
  margin-top: 24px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  padding-top: 20px; border-top: 1px solid var(--line);
}
.svc-foot .dur { font-size: 14px; color: var(--muted); }
.svc-foot .dur b { color: var(--ink); }
.svc-foot .price { font-size: 14px; color: var(--muted); }
.svc-foot .price b { font-size: 22px; color: var(--brand); font-weight: 700; }

/* ---------- 价格表 ---------- */
.price-wrap {
  background: #fff; border: 1px solid var(--line); border-radius: 22px;
  overflow: hidden; box-shadow: var(--shadow-soft);
}
.price-table { width: 100%; table-layout: fixed; border-collapse: collapse; }
.price-table caption {
  text-align: left; padding: 26px 30px 6px; font-size: 18px; font-weight: 700;
}
.price-table col:first-child { width: 20%; }
.price-table col:nth-child(2) { width: 44%; }
.price-table col:nth-child(3) { width: 14%; }
.price-table col:last-child { width: 22%; }
.price-table th {
  text-align: left; font-size: 13.5px; color: var(--muted); font-weight: 500;
  padding: 14px 24px; background: var(--bg); border-bottom: 1px solid var(--line);
}
.price-table td {
  padding: 17px 24px; font-size: 14.5px; border-bottom: 1px solid var(--line); vertical-align: middle;
}
.price-table tbody tr:last-child td { border-bottom: 0; }
.price-table td .p-name { font-weight: 600; }
.price-table td .p-note { font-size: 12.5px; color: var(--muted); margin-top: 3px; line-height: 1.6; }
.price-table td .p-price { font-weight: 700; color: var(--brand-dark); font-size: 16px; }
.price-table td .p-price small { font-size: 12px; font-weight: 400; color: var(--muted); }
.price-note { margin-top: 16px; font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.price-note .ic { width: 16px; height: 16px; flex: none; color: var(--accent); }

/* ---------- 双栏说明（注意事项） ---------- */
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.split-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; }
.split-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.split-card h3 .ic { width: 24px; height: 24px; color: var(--brand); }
.split-card ul li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 14.5px; color: var(--ink); line-height: 1.8; padding: 7px 0;
  border-bottom: 1px dashed var(--line);
}
.split-card ul li:last-child { border-bottom: 0; }
.split-card ul .ic { flex: none; width: 19px; height: 19px; color: var(--brand); margin-top: 5px; }

/* ---------- 科普文章 ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.post-card {
  display: flex; flex-direction: column; cursor: pointer;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  text-align: left;
}
.post-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); border-color: rgba(15, 157, 143, 0.45); }
.post-card .photo { overflow: hidden; }
.post-card .photo img { width: 100%; height: 196px; object-fit: cover; transition: transform .5s ease; }
.post-card:hover .photo img { transform: scale(1.05); }
.post-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.post-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.post-meta .tag {
  font-size: 12px; font-weight: 600; color: var(--brand-dark);
  background: var(--brand-tint); border-radius: 999px; padding: 3px 11px;
}
.post-meta time { font-size: 12.5px; color: var(--muted); }
.post-body h3 { font-size: 17.5px; font-weight: 700; line-height: 1.55; margin-bottom: 10px; transition: color .25s ease; }
.post-card:hover .post-body h3 { color: var(--brand-dark); }
.post-body .excerpt { font-size: 14px; color: var(--muted); line-height: 1.85; flex: 1; }
.post-body .more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 16px;
  color: var(--brand); font-size: 14px; font-weight: 600;
}
.post-body .more .ic { width: 16px; height: 16px; }

/* ---------- 阅读弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 28px; }
.modal.open { display: flex; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(20, 52, 59, 0.55); -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px); animation: fadeIn .3s ease; }
.modal-panel {
  position: relative; width: 100%; max-width: 780px; max-height: 88vh; overflow-y: auto;
  background: #fff; border-radius: 22px; padding: 48px 52px 44px;
  animation: riseIn .35s ease;
}
.modal-close {
  position: absolute; top: 22px; right: 22px; z-index: 2;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--line);
  display: grid; place-items: center; color: var(--muted);
  transition: color .25s ease, border-color .25s ease, transform .25s ease;
}
.modal-close:hover { color: var(--brand); border-color: var(--brand); transform: rotate(90deg); }
.modal-close .ic { width: 18px; height: 18px; }
.modal-panel .m-hero img { width: 100%; height: 300px; object-fit: cover; border-radius: 16px; margin: 8px 0 26px; }
.modal-panel .m-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.modal-panel .m-meta .tag { font-size: 12.5px; font-weight: 600; color: var(--brand-dark); background: var(--brand-tint); border-radius: 999px; padding: 4px 12px; }
.modal-panel .m-meta time { font-size: 13px; color: var(--muted); }
.modal-panel h2 { font-size: 25px; font-weight: 700; line-height: 1.5; margin-bottom: 18px; }
.article p { font-size: 15.5px; color: var(--ink); line-height: 2.05; margin-bottom: 18px; }
.article h4 { font-size: 17px; font-weight: 700; margin: 28px 0 12px; }
.article ul { margin-bottom: 18px; }
.article ul li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; line-height: 1.95; color: var(--ink); padding: 5px 0; }
.article ul .ic { flex: none; width: 19px; height: 19px; color: var(--brand); margin-top: 6px; }
.article .tip {
  background: var(--brand-tint); border-left: 3px solid var(--brand);
  border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 24px 0;
  font-size: 14.5px; color: var(--brand-deep); line-height: 1.9;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes riseIn { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.contact-card:hover { transform: translateY(-4px); border-color: rgba(15, 157, 143, 0.45); box-shadow: var(--shadow-soft); }
.contact-card .icon {
  width: 52px; height: 52px; border-radius: 15px; margin-bottom: 16px;
  background: var(--brand-tint); color: var(--brand); display: grid; place-items: center;
}
.contact-card .icon .ic { width: 26px; height: 26px; }
.contact-card h3 { font-size: 15px; color: var(--muted); font-weight: 500; }
.contact-card .val { font-size: 18px; font-weight: 700; line-height: 1.6; }
.contact-card .sub { font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.contact-card a.tel { color: var(--brand-dark); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--brand-deep); color: #B9CFCB; padding: 66px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 44px; padding-bottom: 52px; }
.footer-brand .brand-text b { color: #fff; }
.footer-brand .brand-text i { color: #8FC6BE; }
.footer-brand p { margin-top: 18px; font-size: 14px; line-height: 1.95; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 20px; letter-spacing: 0.5px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col a { font-size: 14px; color: #B9CFCB; transition: color .25s ease; }
.footer-col a:hover { color: #fff; }
.footer-col .f-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; line-height: 1.8; }
.footer-col .f-contact .ic { flex: none; width: 17px; height: 17px; color: #8FC6BE; margin-top: 4px; }
.footer-col .f-contact b { color: #fff; font-weight: 600; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 22px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: #8FB5B0;
}
.footer-bottom .foot-links { display: flex; gap: 22px; }
.footer-bottom .foot-links a:hover { color: #fff; }

/* ---------- 弹窗内容源（隐藏） ---------- */
.m-src { display: none; }

/* ---------- 键盘焦点 ---------- */
a:focus-visible, button:focus-visible, summary:focus-visible, .post-card:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 6px;
}

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

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 50;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--brand); color: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-brand);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s ease, background .25s ease;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--brand-dark); }
.to-top .ic { width: 20px; height: 20px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; padding: 56px 0 80px; }
  .hero h1 { font-size: 42px; }
  .hero-media { max-width: 640px; }
  .hero-img { height: 440px; }
  .hero-card { left: 14px; }
  .card-grid, .svc-grid, .team-grid, .post-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .env-grid { grid-template-columns: 1fr; }
  .env-item img { min-height: 300px; }
  .svc-block { grid-template-columns: 1fr; gap: 34px; }
  .svc-media img { height: 340px; }
  .contact-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .header-inner { height: 68px; }
  .header-tel { display: none; }
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: fixed; inset: 68px 0 auto 0; z-index: 70;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(22, 50, 56, 0.1);
    padding: 14px 24px 24px;
    transform: translateY(-16px); opacity: 0; visibility: hidden;
    transition: transform .3s ease, opacity .3s ease, visibility .3s ease;
  }
  body.nav-open .main-nav { transform: none; opacity: 1; visibility: visible; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { display: block; padding: 13px 8px; font-size: 16px; border-bottom: 1px solid var(--bg); }
  .nav-link::after { display: none; }
  .nav-link.active { color: var(--brand); background: var(--brand-tint); border-radius: 10px; padding-left: 16px; }
  .hero h1 { font-size: 33px; }
  .hero-sub { font-size: 15.5px; }
  .hero-img { height: 320px; }
  .hero-card { left: 10px; bottom: 20px; padding: 12px 16px; }
  .hero-card .num { font-size: 24px; }
  .sec-head h2 { font-size: 27px; }
  .sec-head p { font-size: 15px; }
  .card-grid, .svc-grid, .team-grid, .post-grid { grid-template-columns: 1fr; }
  .stats { padding: 38px 24px; }
  .stat b { font-size: 32px; }
  .flow { grid-template-columns: 64px 36px 1fr; }
  .cta-band { padding: 42px 30px; }
  .cta-band h2 { font-size: 25px; }
  .page-hero h1 { font-size: 30px; }
  .price-wrap { overflow-x: auto; }
  .price-table { min-width: 640px; }
  .split-grid { grid-template-columns: 1fr; }
  .modal-panel { padding: 30px 24px 28px; }
  .modal-panel .m-hero img { height: 220px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .to-top { right: 18px; bottom: 18px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .hero-inner { padding-top: 44px; }
  .hero-actions .btn { flex: 1; }
  .env-item img { min-height: 240px; }
  .svc-media img { height: 260px; }
  .svc-media .num-badge { width: 52px; height: 52px; font-size: 18px; }
}

/* ---------- 无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}