:root {
  --ink: #10233d;
  --muted: #617189;
  --line: #dbe5ef;
  --blue: #1976c8;
  --blue-dark: #0d589a;
  --surface: #f4f8fc;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }

.site-header { height: 76px; max-width: 1200px; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 750; letter-spacing: -0.02em; }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
nav { display: flex; gap: 30px; color: var(--muted); font-size: 14px; }
nav a:hover { color: var(--blue); }

.hero { min-height: 680px; background: linear-gradient(135deg, #f6faff 0%, #edf5fc 55%, #e6f0f9 100%); display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); align-items: center; gap: 60px; padding: 90px max(28px, calc((100vw - 1144px) / 2)); overflow: hidden; }
.hero-copy { max-width: 690px; }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 0; max-width: 760px; font-size: clamp(42px, 5.2vw, 72px); line-height: 1.06; letter-spacing: -0.055em; }
.hero-lede { max-width: 650px; margin: 30px 0 0; color: var(--muted); font-size: 20px; line-height: 1.8; }
.hero-actions { display: flex; gap: 14px; margin-top: 38px; }
.button { min-height: 50px; padding: 0 24px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700; }
.primary { background: var(--blue); color: white; box-shadow: 0 12px 30px rgba(25,118,200,.22); }
.primary:hover { background: var(--blue-dark); }
.secondary { border: 1px solid #b9cde0; background: rgba(255,255,255,.7); color: var(--blue-dark); }
.medical-note { margin-top: 22px; color: #7b8798; font-size: 13px; }

.hero-visual { position: relative; min-height: 430px; display: grid; place-items: center; }
.hero-visual::before, .hero-visual::after { content: ""; position: absolute; border-radius: 999px; border: 1px solid rgba(25,118,200,.14); }
.hero-visual::before { width: 460px; height: 460px; }
.hero-visual::after { width: 340px; height: 340px; background: rgba(255,255,255,.35); }
.icon-halo { z-index: 1; width: 190px; height: 190px; padding: 16px; border-radius: 48px; background: rgba(255,255,255,.85); box-shadow: 0 28px 80px rgba(16,35,61,.16); }
.icon-halo img { width: 100%; height: 100%; border-radius: 34px; }
.status-card { position: absolute; z-index: 2; right: 0; bottom: 52px; width: 260px; padding: 18px; border: 1px solid rgba(255,255,255,.9); border-radius: 18px; display: flex; align-items: center; gap: 13px; background: rgba(255,255,255,.82); box-shadow: 0 18px 45px rgba(16,35,61,.12); backdrop-filter: blur(15px); }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: #22a86a; box-shadow: 0 0 0 6px rgba(34,168,106,.12); }
.status-card strong, .status-card small { display: block; }
.status-card strong { font-size: 14px; }
.status-card small { margin-top: 3px; color: var(--muted); }

.features { max-width: 1200px; margin: 0 auto; padding: 100px 28px 120px; }
.section-heading { max-width: 650px; }
h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.15; letter-spacing: -0.04em; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 52px; }
.feature-card { min-height: 240px; padding: 30px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); }
.feature-index { color: var(--blue); font-weight: 800; font-size: 12px; }
.feature-card h3 { margin: 48px 0 12px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.75; }

footer { max-width: 1144px; margin: 0 auto; padding: 26px 0 44px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
footer div { display: flex; gap: 22px; }

.document-hero { background: linear-gradient(135deg, #f6faff 0%, #eaf3fb 100%); border-block: 1px solid var(--line); }
.document-hero-inner { max-width: 920px; margin: 0 auto; padding: 86px 28px 74px; }
.document-hero h1 { max-width: none; font-size: clamp(44px, 6vw, 68px); }
.document-hero-inner > p:last-child { max-width: 720px; margin: 24px 0 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.document-body { max-width: 860px; min-height: 640px; margin: 0 auto; padding: 70px 28px 110px; }
.document-body section { margin-top: 54px; }
.document-body section:first-of-type { margin-top: 38px; }
.document-body h2 { margin: 0 0 18px; font-size: 27px; letter-spacing: -0.03em; }
.document-body h3 { margin: 28px 0 10px; font-size: 18px; }
.document-body p, .document-body li { color: #465871; font-size: 16px; line-height: 1.95; }
.document-body p { margin: 0 0 15px; }
.document-body ul, .document-body ol { margin: 10px 0 0; padding-left: 24px; }
.document-body a { color: var(--blue-dark); text-decoration: underline; text-underline-offset: 3px; }
.updated { padding-bottom: 28px; border-bottom: 1px solid var(--line); color: #7a899b !important; font-size: 13px !important; }
.callout { margin-top: 24px; padding: 22px 24px; border: 1px solid #cfe0ef; border-left: 4px solid var(--blue); border-radius: 14px; background: #f3f8fd; }
.callout strong { color: var(--ink); }
.callout p { margin: 8px 0 0; font-size: 14px; }
.support-intro { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 0 !important; }
.support-intro div { padding: 22px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.support-intro span, .support-intro strong { display: block; }
.support-intro span { color: var(--muted); font-size: 12px; }
.support-intro strong { margin-top: 8px; font-size: 15px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 21px 2px; cursor: pointer; font-weight: 700; list-style: none; }
.faq-list summary::after { content: "+"; float: right; color: var(--blue); font-size: 20px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -4px 32px 22px 2px; }
.link-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.link-cards a { min-height: 128px; padding: 21px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); text-decoration: none; }
.link-cards strong, .link-cards span { display: block; }
.link-cards span { margin-top: 28px; color: var(--blue-dark); font-size: 13px; }

@media (max-width: 820px) {
  .site-header { padding: 0 20px; }
  nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding: 74px 22px 64px; }
  .hero-visual { min-height: 340px; }
  .status-card { right: 6px; }
  .feature-grid { grid-template-columns: 1fr; }
  .features { padding: 78px 20px; }
  footer { margin: 0 20px; flex-direction: column; gap: 18px; }
  footer div { flex-wrap: wrap; }
  .document-hero-inner { padding: 64px 20px 58px; }
  .document-body { padding: 52px 20px 80px; }
  .support-intro, .link-cards { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  h1 { font-size: 42px; }
  .hero-lede { font-size: 17px; }
  .hero-actions { flex-direction: column; }
  .hero-visual::before { width: 340px; height: 340px; }
  .hero-visual::after { width: 260px; height: 260px; }
  .icon-halo { width: 150px; height: 150px; border-radius: 38px; }
}