/* Tom local draft, reviewed and refined by Codex. */
/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Microsoft YaHei', 'Songti SC', SimSun, serif;
  background-color: #f7f5ef;
  color: #173e35;
  line-height: 1.6;
  font-size: 16px;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; border: none; background: none; cursor: pointer; }

/* Variables */
:root {
  --color-ivory: #f7f5ef;
  --color-forest: #173e35;
  --color-sage: #84927a;
  --spacing-section: 96px;
  --spacing-mobile: 48px;
  --container-max: 1240px;
}

/* Header */
header.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-ivory);
  border-bottom: 1px solid rgba(23, 62, 53, 0.1);
  padding: 1rem 0;
}
.header .logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-weight: bold;
  color: var(--color-forest);
}
.nav-toggle {
  background: none;
  border: 2px solid var(--color-forest);
  padding: 0.5rem 1rem;
  color: var(--color-forest);
  font-weight: bold;
}

/* Main Layout */
main.main { max-width: var(--container-max); margin: 0 auto; }
section {
  margin-bottom: var(--spacing-section);
  padding: 0 1rem;
}

/* Hero Section */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.hero h1 {
  font-family: 'Songti SC', SimSun, serif;
  font-size: 80px;
  line-height: 1.25;
  color: var(--color-forest);
  margin-bottom: 1rem;
}
.hero p { font-size: 1.1rem; color: #555; }
.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}
.cta, .text-link {
  padding: 0.8rem 1.5rem;
  border-radius: 4px;
  font-weight: bold;
  transition: transform 0.2s;
}
.cta { background-color: var(--color-forest); color: #fff; }
.text-link { border: 1px solid var(--color-forest); color: var(--color-forest); }
.hero-right img {
  width: 460px;
  height: 460px;
  object-fit: cover;
  border-radius: 240px 240px 0 0;
}
.location-ribbon {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

/* About Section */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.about img { border-radius: 8px; }

/* Services Section */
.services h2, .about h2 {
  font-size: 2.5rem;
  color: var(--color-forest);
  margin-bottom: 1rem;
}
.service-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.service-item {
  padding-top: 2rem;
  border-top: 1px solid var(--color-forest);
  position: relative;
}
.service-item::before {
  content: attr(data-num);
  position: absolute;
  top: -1.2rem;
  left: 0;
  font-size: 22px;
  color: var(--color-sage);
  font-weight: bold;
}
.service-item h3 { margin-bottom: 0.5rem; }
.section-note {
  text-align: center;
  color: var(--color-sage);
  font-style: italic;
}

/* Gallery Section */
.gallery-filter {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}
.filter-button {
  padding: 0.5rem 1rem;
  border-radius: 20px;
  background: var(--color-ivory);
  color: var(--color-forest);
  font-weight: bold;
}
.filter-button[aria-pressed="true"] {
  background: var(--color-forest);
  color: #fff;
}
.gallery-images {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.gallery-image {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  border-radius: 8px;
}
.gallery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.gallery-image:hover img { transform: scale(1.05); }
.gallery-image span.caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(23, 62, 53, 0.8);
  color: #fff;
  padding: 0.5rem;
  font-size: 0.9rem;
}

/* Clinics Section */
.clinics-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.clinic-card {
  background: var(--color-forest);
  color: #fff;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.clinic-card img {
  height: 240px;
  width: 100%;
  object-fit: cover;
}
.clinic-info { padding: 1.5rem; }
.clinic-info h3 { margin-bottom: 0.5rem; color: #fff; }
.clinic-actions {
  display: flex;
  gap: 1rem;
  margin-top: auto;
}
.copy-address, .map-link {
  background: rgba(255,255,255,0.1);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.9rem;
}

/* Footer */
footer.footer {
  background: var(--color-forest);
  color: var(--color-ivory);
  padding: 3rem 1rem;
  text-align: center;
}
footer a { color: var(--color-sage); }

/* Lightbox */
dialog#lightbox {
  position: fixed;
  inset: 0;
  background: rgba(23, 62, 53, 0.9);
  backdrop-filter: blur(5px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
dialog#lightbox[open] { display: flex; }
.lightbox-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: rgba(255,255,255,0.2);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}
#lightbox-image {
  max-width: 90vw;
  max-height: 70vh;
  object-fit: contain;
  border-radius: 8px;
}

/* Toast */
#toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-forest);
  color: #fff;
  padding: 1rem 2rem;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 999;
}
#toast.show { opacity: 1; }

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-forest);
  color: #fff;
  padding: 8px;
  z-index: 2000;
}
.skip-link:focus { top: 0; }

/* Responsive */
@media (max-width: 760px) {
  header .nav-toggle { display: block; }
  nav#primary-nav.nav { display: none; }
  nav#primary-nav.nav.open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-ivory); padding: 1rem; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-right img { width: 100%; height: auto; border-radius: 0; }
  .about, .services, .clinics-inner { grid-template-columns: 1fr; gap: 1rem; }
  .service-item::before { content: none; }
  .hero h1 { font-size: 48px; }
  .gallery-images { grid-template-columns: repeat(2, 1fr); }
  section { padding: 0 1rem; }
}
@media (max-width: 420px) {
  .services { grid-template-columns: 1fr; }
  .service-item::before { content: none; }
  .gallery-images { grid-template-columns: 1fr; }
}

/* Integration corrections: actual document layout, accessibility and mobile. */
[hidden] { display:none !important; }
body { font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif; }
button { color:inherit; font-size:inherit; }
:focus-visible { outline:3px solid #b18b45; outline-offset:5px; }
section, #main { scroll-margin-top:100px; }
header.header { display:flex; justify-content:space-between; align-items:center; padding:20px max(28px, calc((100% - 1200px)/2)); gap:20px; }
.logo { display:flex; align-items:center; gap:12px; font-size:23px; letter-spacing:3px; white-space:nowrap; }
.logo svg { flex-shrink:0; }
.logo small { display:block; font-size:9px; letter-spacing:2px; font-weight:400; margin-top:2px; }
.nav-toggle { display:none; }
.nav-list { display:flex; align-items:center; gap:32px; font-size:14px; }
.nav-cta { display:inline-block; padding:12px 23px; border-radius:28px; background:#173e35; color:#fff; }
main.main { max-width:none; }
section:not(.clinics), .location-ribbon { max-width:1240px; margin-left:auto; margin-right:auto; padding-left:32px; padding-right:32px; }
.hero { padding-top:65px; padding-bottom:64px; margin-bottom:0; gap:70px; }
.hero h1 { font-weight:400; letter-spacing:3px; margin:25px 0; }
.eyebrow, .hero p.eyebrow { font-size:11px; letter-spacing:2px; color:#697769; margin-bottom:22px; }
.hero .hero-intro { font-size:16px; line-height:1.95; color:#657369; }
.hero-right { position:relative; padding-left:20px; }
.hero-right img { width:100%; height:510px; object-position:center; }
.hero p.hero-caption { position:absolute; bottom:26px; left:-14px; padding:18px 25px; background:#faf9f2; color:#173e35; font-family:SimSun,serif; font-size:19px; box-shadow:0 8px 30px #173e3510; }
.hero-caption span { font:9px 'Microsoft YaHei',sans-serif; letter-spacing:2px; }
.hero-actions { align-items:center; flex-wrap:wrap; gap:18px; }
.cta { border-radius:30px; padding:15px 24px; font-size:14px; font-weight:400; }
.cta span { margin-left:20px; }
.text-link { display:inline-block; padding:8px 0; border:0; border-bottom:1px solid #a7b0a1; border-radius:0; font-size:13px; font-weight:400; }
.location-ribbon { justify-content:space-between; gap:20px; border-top:1px solid #dce0d5; border-bottom:1px solid #dce0d5; padding-top:22px; padding-bottom:22px; margin-top:0; margin-bottom:100px; font-size:12px; letter-spacing:1px; color:#617160; }
h2, .services h2, .about h2 { font-family:'Songti SC',SimSun,serif; font-size:40px; line-height:1.5; font-weight:400; letter-spacing:1px; margin-bottom:28px; }
.about { gap:80px; }
.about img { height:390px; width:100%; object-fit:cover; border-radius:2px; }
.about p:not(.eyebrow) { color:#627064; font-size:14px; line-height:2; margin-bottom:20px; }
.service-list { gap:30px 40px; margin-top:35px; }
.service-list li { border-top:1px solid #cfd6c7; padding:24px 0; }
.number { font-size:12px; color:#7b856e; }
.service-list h3 { font-size:20px; font-weight:500; margin:14px 0 12px; }
.service-list p { color:#687368; font-size:13px; line-height:1.9; }
.section-note { margin-top:28px; text-align:left; font-size:12px; color:#667461; font-style:normal; }
.section-heading { display:flex; align-items:flex-end; justify-content:space-between; gap:30px; margin-bottom:30px; }
.section-heading h2 { margin-bottom:0; }
.gallery-filter { gap:5px; margin-bottom:4px; flex-wrap:wrap; }
.filter-button { font-size:13px; font-weight:400; }
.gallery-images { gap:28px; }
.gallery-image { border-radius:3px; text-align:left; }
.gallery-image span.caption { padding:15px; background:linear-gradient(transparent,#173e35df); padding-top:35px; }
.clinics { background:#173e35; color:#f7f5ef; padding:75px 32px; margin-bottom:0; }
.clinics-inner { display:block; max-width:1176px; margin:auto; }
.clinics .eyebrow { color:#b7c6ad; }
.clinic-grid { display:grid; grid-template-columns:1fr 1fr; gap:56px; margin-top:35px; }
.clinic-card { border-radius:0; }
.clinic-card img { height:275px; }
.clinic-info { padding:25px 0; }
.clinic-info .eyebrow { font-size:10px; margin-bottom:9px; }
.clinic-info h3 { font-size:27px; font-family:SimSun,serif; font-weight:400; }
.address { color:#cbd4c7; font-size:13px; min-height:42px; margin:15px 0; }
.phone { display:block; font-size:23px; letter-spacing:1px; margin-bottom:23px; }
.phone span { font-size:11px; letter-spacing:0; margin-left:10px; color:#cbd4c7; }
.clinic-actions { align-items:center; }
.copy-address, .map-link { border:1px solid #61786c; border-radius:30px; background:transparent; font-size:12px; }
.clinics .section-note { color:#c5cebf; border-top:1px solid #49665a; padding-top:25px; }
footer.footer { display:flex; justify-content:space-between; align-items:center; gap:25px; text-align:left; padding:38px max(32px,calc((100% - 1176px)/2)); background:#f7f5ef; color:#173e35; }
footer p, footer a { font-size:11px; line-height:1.9; color:#64725e; }
dialog#lightbox { margin:auto; width:min(92vw,1000px); height:auto; max-height:92vh; padding:60px 24px 20px; border:0; color:white; border-radius:6px; }
dialog#lightbox[open] { display:flex; flex-direction:column; gap:12px; }
dialog#lightbox::backdrop { background:#071d17c9; }
#lightbox-image { max-width:100%; height:auto; max-height:70vh; }
#lightbox-title { font-size:14px; }
#toast { max-width:90vw; width:max-content; font-size:13px; }
@media(max-width:1000px) { .nav-list { gap:18px; } .hero { gap:25px; } .hero h1 { font-size:66px; } .hero-right img { height:470px; } }
@media(max-width:760px) {
 header.header { padding:16px 22px; } .logo { font-size:20px; gap:8px; } .logo small { font-size:8px; } .nav-toggle { font-size:12px; border:1px solid #a1af9b; border-radius:20px; padding:8px 13px; }
 .nav-list { flex-direction:column; align-items:stretch; gap:0; } .nav-list a { display:block; padding:15px 20px; } .nav-cta { border-radius:3px; }
 section:not(.clinics), .location-ribbon { padding-left:24px; padding-right:24px; }
 section { margin-bottom:60px; } .hero { text-align:left; padding-top:40px; padding-bottom:40px; gap:36px; }
 .hero h1 { font-size:52px; margin:18px 0; } .hero-right { padding-left:15px; } .hero-right img { border-radius:200px 200px 0 0; height:430px; }
 .hero p.hero-caption { left:0; font-size:17px; } .hero-actions { gap:15px; } .cta { padding:14px 20px; }
 .location-ribbon { flex-wrap:wrap; margin-bottom:60px; font-size:11px; gap:12px; } .location-ribbon span:last-child { display:none; }
 h2, .services h2, .about h2 { font-size:30px; } .about { gap:30px; } .about img { height:290px; }
 .service-list { grid-template-columns:1fr 1fr; gap:15px 22px; } .service-list h3 { font-size:18px; }
 .section-heading { display:block; } .gallery-filter { margin-top:23px; } .gallery-images { grid-template-columns:1fr 1fr; gap:14px; } .gallery-image span.caption { font-size:11px; padding:25px 9px 10px; }
 .clinics { padding:50px 24px; } .clinic-grid { grid-template-columns:1fr; gap:30px; } .clinic-card img { height:230px; } .address { min-height:0; }
 footer.footer { flex-wrap:wrap; padding:30px 24px; } footer p { width:100%; order:3; } .phone { font-size:22px; }
}
@media(max-width:420px) { .service-list { grid-template-columns:1fr; } .hero h1 { font-size:48px; } .hero-right img { height:380px; } }
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } *,*::before,*::after { transition:none !important; animation:none !important; } }