:root {
  --ink: #20312c;
  --muted: #66736f;
  --line: #dfe7e2;
  --paper: #ffffff;
  --soft: #f5f8f5;
  --green: #586c34;
  --green-deep: #314321;
  --gold: #caa23b;
  --gold-soft: #f8f0dc;
  --red: #d83b2e;
  --shadow: 0 18px 48px rgba(32, 49, 44, .12);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 118px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.topbar { background: var(--green-deep); color: rgba(255,255,255,.86); font-size: 13px; }
.topbar-inner { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 20; }
.navbar { background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(223,231,226,.75); backdrop-filter: blur(14px); }
.nav-inner { height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand img { width: 170px; height: auto; }
.nav-menu { display: flex; align-items: center; gap: 20px; color: #34443f; font-size: 15px; font-weight: 600; }
.nav-menu a:not(.nav-cta) { padding: 24px 0; border-bottom: 2px solid transparent; }
.nav-menu a:hover { color: var(--green); }
.nav-menu a:not(.nav-cta):hover { border-color: var(--gold); }
.nav-menu a.nav-featured:not(.nav-cta) {
  padding: 9px 13px;
  color: var(--green-deep);
  background: var(--gold-soft);
  border: 1px solid rgba(202,162,59,.48);
  border-radius: var(--radius);
  font-weight: 900;
  white-space: nowrap;
}
.nav-menu a.nav-featured:not(.nav-cta):hover { color: #fff; background: var(--green-deep); border-color: var(--green-deep); }
.nav-menu a.nav-featured[aria-current="page"] { color: #fff; background: var(--green-deep); border-color: var(--green-deep); }
.nav-cta {
  min-height: 40px;
  padding: 8px 18px;
  color: #fff;
  background: var(--red);
  border-radius: var(--radius);
}
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--ink); }

.hero {
  position: relative;
  min-height: 760px;
  padding-top: 108px;
  overflow: hidden;
  color: #fff;
}
.hero-media, .hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-media img { object-fit: cover; }
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22,38,34,.82) 0%, rgba(22,38,34,.56) 46%, rgba(22,38,34,.12) 100%);
}
.hero-inner { position: relative; min-height: 652px; display: grid; align-items: center; }
.hero-copy { max-width: 660px; padding: 80px 0 120px; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}
.hero h1 { margin: 0 0 18px; font-size: clamp(48px, 7vw, 86px); line-height: 1.02; letter-spacing: 0; }
.hero-lead { margin: 0; max-width: 600px; color: rgba(255,255,255,.88); font-size: clamp(18px, 2.2vw, 23px); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  cursor: pointer;
}
.btn-primary { color: #fff; background: var(--red); }
.btn-primary:hover { background: #bd2f24; }
.btn-light { color: var(--ink); background: #fff; }
.btn-light:hover { background: var(--gold-soft); }
.btn-outline-dark { color: var(--green-deep); border-color: var(--green); background: transparent; }
.btn-outline-dark:hover { color: #fff; background: var(--green); }
.hero-metrics {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(255,255,255,.94);
  color: var(--ink);
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.hero-metrics div { padding: 24px 32px; border-right: 1px solid var(--line); }
.hero-metrics div:last-child { border-right: 0; }
.hero-metrics dt { font-size: 34px; line-height: 1; font-weight: 900; color: var(--green); }
.hero-metrics dd { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

.section { padding: 92px 0; }
.section-head { max-width: 720px; margin: 0 auto 42px; text-align: center; }
.section-head h2, .split-copy h2, .cta-inner h2, .page-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: 0;
}
.section-head p, .split-copy p, .cta-inner p, .page-hero p { margin: 0; color: var(--muted); }
.geo-facts { padding: 34px 0; background: var(--gold-soft); }
.facts-panel {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 36px;
  align-items: start;
  padding: 32px;
  background: #fff;
  border: 1px solid rgba(202,162,59,.36);
  border-radius: var(--radius);
  box-shadow: 0 12px 34px rgba(32,49,44,.08);
}
.facts-panel h2 { margin: 0 0 12px; font-size: clamp(26px, 3vw, 38px); line-height: 1.18; }
.facts-panel p { margin: 0; color: var(--muted); }
.facts-list { display: grid; gap: 12px; margin: 0; }
.facts-list div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.facts-list div:last-child { border-bottom: 0; }
.facts-list dt { color: var(--green); font-weight: 900; }
.facts-list dd { margin: 0; color: var(--ink); }
.denture-spotlight { color: #fff; background: var(--green-deep); }
.denture-spotlight-inner {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 64px;
  align-items: center;
  padding: 62px 0;
}
.denture-spotlight-label { margin: 0 0 10px; color: var(--gold); font-size: 14px; font-weight: 900; }
.denture-spotlight h2 {
  max-width: 650px;
  margin: 0 0 16px;
  font-size: clamp(32px, 4.2vw, 50px);
  line-height: 1.14;
  letter-spacing: 0;
}
.denture-spotlight-copy > p:not(.denture-spotlight-label) { max-width: 650px; margin: 0; color: rgba(255,255,255,.8); }
.denture-spotlight-copy .btn { margin-top: 26px; }
.denture-spotlight-points { margin: 0; border-top: 1px solid rgba(255,255,255,.2); }
.denture-spotlight-points div {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,.2);
}
.denture-spotlight-points dt { color: var(--gold); font-weight: 900; }
.denture-spotlight-points dd { margin: 0; color: rgba(255,255,255,.88); }
.services { background: var(--soft); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card {
  min-height: 246px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.service-card:hover { transform: translateY(-4px); border-color: rgba(202,162,59,.55); box-shadow: var(--shadow); }
.service-mark { color: var(--gold); font-weight: 900; }
.service-card h3 { margin: 14px 0 10px; font-size: 23px; }
.service-card p { margin: 0 0 18px; color: var(--muted); }
.service-card a, .text-link { color: var(--green); font-weight: 800; }

.split-layout { display: grid; grid-template-columns: 1.08fr .92fr; gap: 58px; align-items: center; }
.image-pair { position: relative; min-height: 560px; }
.image-pair > picture { display: contents; }
.main-photo, .side-photo { width: 82%; border-radius: var(--radius); object-fit: cover; box-shadow: var(--shadow); }
.main-photo { height: 420px; }
.side-photo { position: absolute; right: 0; bottom: 0; width: 54%; height: 260px; border: 8px solid #fff; }
.split-copy { max-width: 520px; }
.feature-list { display: grid; gap: 14px; margin-top: 30px; }
.feature-list div { padding: 18px 0; border-top: 1px solid var(--line); }
.feature-list strong { display: block; margin-bottom: 4px; font-size: 18px; }
.feature-list span { color: var(--muted); }

.doctor-preview { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.row-head { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 24px; text-align: left; }
.doctor-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.doctor-mini { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.doctor-mini img { width: 100%; aspect-ratio: 4 / 4.25; object-fit: cover; object-position: center top; }
.doctor-mini h3 { margin: 18px 18px 4px; font-size: 21px; }
.doctor-mini p { margin: 0 18px 20px; color: var(--muted); }

.branches { background: var(--soft); }
.branch-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.branch-card {
  min-height: 210px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.branch-card h3 { margin: 0 0 12px; font-size: 22px; }
.branch-card p { min-height: 78px; margin: 0 0 18px; color: var(--muted); }
.branch-card a { color: var(--red); font-weight: 900; }

.faq-section { background: #fff; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.faq-grid article {
  padding: 24px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.faq-grid h3 { margin: 0 0 10px; font-size: 20px; }
.faq-grid p { margin: 0; color: var(--muted); }

.knowledge-preview { background: #fff; border-top: 1px solid var(--line); }
.article-topic-section { background: var(--gold-soft); }
.article-topic-section .section-head, .article-all-section .section-head { margin-left: 0; text-align: left; }
.article-topic-section .article-card { box-shadow: none; border-color: rgba(202,162,59,.34); }
.article-preview-grid, .article-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.article-list { grid-template-columns: repeat(2, 1fr); }
.article-card {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 26px rgba(32,49,44,.06);
}
.article-card h2, .article-card h3 { margin: 8px 0 12px; line-height: 1.28; }
.article-card h2 { font-size: 24px; }
.article-card h3 { font-size: 21px; }
.article-card p { margin: 0; color: var(--muted); }
.article-meta { color: var(--green) !important; font-size: 13px; font-weight: 900; }
.article-page { padding: 150px 0 80px; background: #fff; }
.article-layout { max-width: 860px; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 14px;
}
.breadcrumb a { color: var(--green); font-weight: 800; }
.article-header {
  padding-bottom: 28px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}
.article-header h1 {
  margin: 10px 0 16px;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.12;
}
.article-header > p:last-child { margin: 0; color: var(--muted); font-size: 18px; }
.article-content { color: #3f4c48; font-size: 18px; line-height: 1.9; }
.article-content h2 {
  margin: 34px 0 12px;
  color: var(--ink);
  font-size: 26px;
  line-height: 1.25;
}
.article-content p { margin: 0 0 16px; }
.article-content ul { margin: 0 0 18px; padding-left: 22px; }
.article-content li { margin-bottom: 8px; }
.article-content a { color: var(--green); font-weight: 800; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.notice {
  padding: 16px 18px;
  background: var(--gold-soft);
  border: 1px solid rgba(202,162,59,.35);
  border-radius: var(--radius);
  color: var(--ink) !important;
  font-size: 16px;
}
.article-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  margin-top: 36px;
  border-top: 1px solid var(--line);
}
.article-related {
  margin-top: 42px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.article-related h2 { margin: 0 0 16px; font-size: 24px; }
.article-related-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.article-related-links a {
  padding: 16px 18px;
  color: var(--green-deep);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 800;
}
.article-related-links a:hover { border-color: var(--gold); background: var(--gold-soft); }

.cta-band { padding: 64px 0; background: var(--gold-soft); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 34px; }
.cta-inner > div:first-child { max-width: 680px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }

.footer { padding: 54px 0; color: rgba(255,255,255,.78); background: #1d2a26; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1.4fr; gap: 48px; }
.footer-logo { width: 170px; padding: 10px; margin-bottom: 14px; background: #fff; border-radius: var(--radius); }
.footer h2 { margin: 0 0 14px; color: #fff; font-size: 17px; }
.footer p { margin: 0 0 8px; }
.footer a { display: block; margin-bottom: 8px; }
.footer a:hover { color: var(--gold); }

.float-actions {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: grid;
  gap: 10px;
}
.float-actions a, .float-actions button {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: var(--red);
  box-shadow: 0 12px 30px rgba(216,59,46,.28);
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}
.float-actions a { background: var(--green); }

.modal-open { overflow: hidden; }
.wecom-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgba(16, 28, 25, .56);
}
.wecom-modal.is-open { display: grid; }
.wecom-dialog {
  position: relative;
  width: min(420px, 100%);
  padding: 30px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.wecom-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--ink);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}
.wecom-dialog h2 { margin: 0 0 10px; font-size: 28px; line-height: 1.2; }
.wecom-copy { margin: 0 0 18px; color: var(--muted); }
.wecom-box {
  display: grid;
  place-items: center;
  min-height: 210px;
  margin: 18px 0;
  padding: 18px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.wecom-qr { width: 190px; height: 190px; object-fit: contain; }
.wecom-placeholder {
  display: none;
  gap: 6px;
  text-align: center;
  color: var(--muted);
}
.wecom-placeholder.is-visible { display: grid; }
.wecom-placeholder strong { color: var(--green); font-size: 22px; }
.wecom-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.page-hero {
  padding: 176px 0 78px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}
.page-hero .container { max-width: 880px; text-align: center; }
.doctor-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.doctor-card {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 24px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.doctor-card img { width: 190px; height: 242px; object-fit: cover; object-position: center top; border-radius: var(--radius); }
.doctor-card h2 { margin: 6px 0 4px; font-size: 26px; }
.doctor-title { margin: 0 0 14px; color: var(--green); font-weight: 800; }
.doctor-card p { color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tags span { padding: 5px 10px; color: var(--green-deep); background: var(--gold-soft); border-radius: 999px; font-size: 13px; font-weight: 800; }

.service-page { background: #fff; }
.service-hero {
  padding: 156px 0 66px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}
.service-hero-grid {
  min-height: 470px;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 64px;
  align-items: center;
}
.service-hero-copy { max-width: 590px; }
.service-breadcrumb { margin-bottom: 24px; }
.service-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(44px, 5.8vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}
.service-lead {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.75;
}
.service-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.service-hero-image {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.service-hero-image picture, .audience-image picture { display: block; }
.service-hero-image img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.service-summary { background: var(--gold-soft); border-bottom: 1px solid rgba(202,162,59,.28); }
.service-summary-inner {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  align-items: start;
  padding: 24px 0;
}
.service-summary strong { color: var(--green-deep); font-size: 18px; }
.service-summary p { max-width: 920px; margin: 0; color: #4c5955; }
.service-section { padding: 86px 0; }
.service-section-soft { background: var(--soft); }
.service-heading { max-width: 720px; margin-bottom: 38px; }
.service-heading-centered { margin-right: auto; margin-left: auto; text-align: center; }
.service-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.16;
}
.service-heading p { margin: 0; color: var(--muted); font-size: 17px; }
.audience-layout {
  display: grid;
  grid-template-columns: .88fr 1.12fr;
  gap: 64px;
  align-items: center;
}
.audience-image { margin: 0; overflow: hidden; border-radius: var(--radius); box-shadow: var(--shadow); }
.audience-image img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.service-checklist { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 28px; }
.service-checklist div { padding: 18px 0; border-top: 1px solid var(--line); }
.service-checklist strong { display: block; margin-bottom: 5px; font-size: 18px; }
.service-checklist span { color: var(--muted); }
.restoration-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.restoration-card {
  grid-column: span 6;
  min-height: 230px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.restoration-card-featured {
  grid-column: span 12;
  min-height: 0;
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 44px;
  align-items: center;
  color: #fff;
  background: var(--green-deep);
  border-color: var(--green-deep);
}
.restoration-card-tint { background: var(--gold-soft); border-color: rgba(202,162,59,.3); }
.restoration-kicker { margin: 0 0 8px !important; color: var(--green) !important; font-size: 13px; font-weight: 900; }
.restoration-card-featured .restoration-kicker { color: var(--gold) !important; }
.restoration-card h3 { margin: 0 0 12px; font-size: 24px; line-height: 1.3; }
.restoration-card p { margin: 0; color: var(--muted); }
.restoration-card-featured > p { color: rgba(255,255,255,.82); }
.assessment-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.assessment-flow article { min-height: 210px; padding: 24px 24px 18px; border-left: 1px solid var(--line); }
.assessment-flow article:last-child { border-right: 1px solid var(--line); }
.assessment-flow h3 { margin: 0 0 10px; color: var(--green-deep); font-size: 21px; }
.assessment-flow p { margin: 0; color: var(--muted); }
.maintenance-section { background: var(--gold-soft); }
.maintenance-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 64px; align-items: start; }
.maintenance-notes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.maintenance-notes > div { padding: 26px; background: #fff; border: 1px solid rgba(202,162,59,.28); border-radius: var(--radius); }
.maintenance-notes h3 { margin: 0 0 12px; font-size: 21px; }
.maintenance-notes ul { margin: 0; padding-left: 20px; color: var(--muted); }
.maintenance-notes li { margin-bottom: 8px; }
.maintenance-notes li:last-child { margin-bottom: 0; }
.faq-service { background: #fff; }
.service-related { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.faq-service-inner { max-width: 900px; }
.faq-accordion { border-top: 1px solid var(--line); }
.faq-accordion details { border-bottom: 1px solid var(--line); }
.faq-accordion summary {
  position: relative;
  padding: 22px 54px 22px 2px;
  list-style: none;
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  cursor: pointer;
}
.faq-accordion summary::-webkit-details-marker { display: none; }
.faq-accordion summary::after {
  content: "+";
  position: absolute;
  top: 18px;
  right: 4px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: var(--green-deep);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 22px;
  font-weight: 500;
  line-height: 1;
}
.faq-accordion details[open] summary::after { content: "−"; }
.faq-accordion details p { max-width: 780px; margin: -4px 0 22px; color: var(--muted); }
.service-notice {
  margin: 32px 0 0;
  padding: 18px 20px;
  color: #4c5955;
  background: var(--soft);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.service-page a:focus-visible,
.service-page button:focus-visible,
.faq-accordion summary:focus-visible { outline: 3px solid rgba(202,162,59,.62); outline-offset: 3px; }

@media (max-width: 980px) {
  .nav-menu {
    position: fixed;
    top: 108px;
    left: 0;
    right: 0;
    display: none;
    padding: 18px 20px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav-menu.is-open { display: grid; gap: 4px; }
  .nav-menu a:not(.nav-cta) { padding: 12px 0; }
  .nav-menu a.nav-featured:not(.nav-cta) { margin: 2px 0; padding: 11px 13px; text-align: center; }
  .nav-toggle { display: block; }
  .hero { min-height: 680px; }
  .hero-inner { min-height: 572px; }
  .service-grid, .branch-grid, .doctor-strip, .faq-grid, .article-preview-grid, .article-list { grid-template-columns: repeat(2, 1fr); }
  .facts-panel, .denture-spotlight-inner { grid-template-columns: 1fr; }
  .split-layout, .doctor-grid { grid-template-columns: 1fr; }
  .split-copy { max-width: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .service-hero { padding-top: 138px; }
  .service-hero-grid { min-height: 0; grid-template-columns: 1fr; gap: 38px; }
  .service-hero-copy { max-width: 720px; }
  .service-hero-image img { aspect-ratio: 16 / 9; }
  .audience-layout, .maintenance-grid { grid-template-columns: 1fr; gap: 38px; }
  .audience-image { max-width: 720px; }
  .assessment-flow { grid-template-columns: repeat(2, 1fr); }
  .assessment-flow article:nth-child(2) { border-right: 1px solid var(--line); }
  .assessment-flow article:nth-child(n+3) { border-top: 1px solid var(--line); }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 106px; }
  body { padding-bottom: 74px; }
  .container { width: min(100% - 24px, 1180px); }
  .topbar { font-size: 12px; }
  .topbar-inner { min-height: 30px; justify-content: center; flex-wrap: wrap; gap: 8px; padding: 4px 0; text-align: center; }
  .nav-inner { height: 66px; }
  .brand img { width: 142px; }
  .nav-toggle { width: 40px; height: 40px; }
  .nav-menu { top: 96px; padding: 12px 18px 18px; }
  .nav-menu a:not(.nav-cta) { padding: 10px 0; }
  .nav-cta { width: 100%; text-align: center; }
  .hero { min-height: auto; padding-top: 96px; }
  .hero-media img { object-position: 58% center; }
  .hero-shade { background: linear-gradient(180deg, rgba(22,38,34,.86), rgba(22,38,34,.62)); }
  .hero-inner { min-height: auto; display: block; padding-bottom: 20px; }
  .hero-copy { padding: 44px 0 18px; }
  .hero h1 { font-size: clamp(42px, 14vw, 58px); margin-bottom: 14px; }
  .hero-lead { font-size: 17px; line-height: 1.72; }
  .hero-actions { margin-top: 24px; gap: 10px; }
  .hero-actions .btn { width: 100%; }
  .hero-metrics { position: static; grid-template-columns: 1fr; margin-top: 8px; border-radius: var(--radius); }
  .hero-metrics div { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-metrics dt { font-size: 24px; }
  .hero-metrics dd { margin: 0; text-align: right; }
  .geo-facts { padding: 22px 0; }
  .section { padding: 54px 0; }
  .section-head { margin-bottom: 26px; }
  .section-head h2, .split-copy h2, .cta-inner h2, .page-hero h1 { font-size: clamp(26px, 9vw, 36px); }
  .service-card, .branch-card, .faq-grid article { padding: 20px; min-height: auto; }
  .service-card h3, .branch-card h3 { font-size: 21px; }
  .branch-card p { min-height: auto; }
  .service-grid, .branch-grid, .doctor-strip, .faq-grid, .article-preview-grid, .article-list { grid-template-columns: 1fr; }
  .facts-panel { padding: 20px; gap: 22px; }
  .facts-panel h2 { font-size: 26px; }
  .facts-list div { grid-template-columns: 1fr; gap: 2px; }
  .denture-spotlight-inner { gap: 30px; padding: 46px 0; }
  .denture-spotlight h2 { font-size: 32px; }
  .denture-spotlight-copy .btn { width: 100%; }
  .denture-spotlight-points div { grid-template-columns: 1fr; gap: 3px; padding: 15px 0; }
  .image-pair { min-height: auto; display: grid; gap: 14px; }
  .main-photo, .side-photo { position: static; width: 100%; height: auto; border: 0; aspect-ratio: 4 / 3; }
  .row-head, .cta-inner { display: grid; align-items: start; }
  .row-head { gap: 10px; }
  .doctor-mini h3 { margin-top: 14px; }
  .cta-actions { justify-content: stretch; }
  .cta-actions .btn { width: 100%; }
  .footer { padding: 40px 0 34px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .page-hero { padding: 138px 0 48px; }
  .article-page { padding: 130px 0 54px; }
  .article-header h1 { font-size: clamp(30px, 10vw, 40px); }
  .article-header > p:last-child, .article-content { font-size: 16px; }
  .article-content h2 { font-size: 23px; }
  .article-card { padding: 20px; }
  .article-related-links { grid-template-columns: 1fr; }
  .article-cta .btn { width: 100%; }
  .doctor-card { grid-template-columns: 1fr; gap: 16px; padding: 14px; }
  .doctor-card img { width: 100%; height: auto; max-height: 300px; aspect-ratio: 4 / 3.2; object-fit: cover; object-position: center top; }
  .doctor-card h2 { font-size: 24px; }
  .service-hero { padding: 118px 0 38px; }
  .service-hero-grid { gap: 28px; }
  .service-breadcrumb { margin-bottom: 18px; }
  .service-hero h1 { font-size: clamp(36px, 12vw, 46px); }
  .service-lead { font-size: 17px; }
  .service-actions { display: grid; grid-template-columns: 1fr; margin-top: 24px; }
  .service-actions .btn { width: 100%; }
  .service-hero-image img { aspect-ratio: 4 / 3; }
  .service-summary-inner { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
  .service-summary strong { font-size: 16px; }
  .service-summary p { font-size: 14px; }
  .service-section { padding: 52px 0; }
  .service-heading { margin-bottom: 26px; }
  .service-heading h2 { font-size: clamp(27px, 9vw, 36px); }
  .service-heading p { font-size: 16px; }
  .audience-layout { gap: 28px; }
  .service-checklist { grid-template-columns: 1fr; }
  .restoration-grid { grid-template-columns: 1fr; }
  .restoration-card, .restoration-card-featured { grid-column: auto; min-height: 0; padding: 22px; }
  .restoration-card-featured { grid-template-columns: 1fr; gap: 10px; }
  .restoration-card h3 { font-size: 21px; }
  .assessment-flow { grid-template-columns: 1fr; }
  .assessment-flow article { min-height: 0; padding: 20px 2px; border: 0; border-top: 1px solid var(--line); }
  .assessment-flow article:last-child, .assessment-flow article:nth-child(2) { border-right: 0; }
  .maintenance-grid { gap: 24px; }
  .maintenance-notes { grid-template-columns: 1fr; }
  .maintenance-notes > div { padding: 22px; }
  .faq-accordion summary { padding: 20px 46px 20px 0; font-size: 17px; line-height: 1.5; }
  .faq-accordion summary::after { top: 18px; right: 0; width: 30px; height: 30px; }
  .faq-accordion details p { margin-top: -2px; font-size: 15px; }
  .service-notice { font-size: 14px; }
  .float-actions {
    left: 12px;
    right: 12px;
    bottom: 10px;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 8px;
    background: rgba(255,255,255,.94);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(32,49,44,.18);
    backdrop-filter: blur(10px);
  }
  .float-actions a, .float-actions button {
    width: 100%;
    height: 48px;
    border-radius: var(--radius);
    box-shadow: none;
  }
  .wecom-modal { align-items: end; padding: 12px; }
  .wecom-dialog { padding: 24px 18px 18px; border-radius: 14px; }
  .wecom-dialog h2 { font-size: 24px; }
  .wecom-box { min-height: 170px; margin: 14px 0; }
  .wecom-qr { width: 150px; height: 150px; }
  .wecom-actions { grid-template-columns: 1fr; }
}