/* YesHealth / 医起行 — static site styles (no frameworks) */
:root{
  --teal:#1FA4A4;        /* brand cool (decorative / large) */
  --teal-ink:#147A7A;    /* AA-contrast teal for text & links */
  --warm:#DC4F39;        /* brand warm CTA */
  --warm-ink:#C9432E;    /* AA-contrast warm */
  --text:#3C3B39;
  --muted:#5F5D5A;
  --secondary:#999999;   /* decorative only */
  --bg:#FFFFFF;
  --surface:#F2F2F1;
  --border:#E8E8E6;
  --radius:16px;
  --shadow:0 2px 8px rgba(0,0,0,.06);
  --wrap:1040px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--text);background:var(--bg);line-height:1.65;font-size:16px}
img{max-width:100%;height:auto}
a{color:var(--teal-ink);text-underline-offset:2px}
a:hover{color:#0F6060}
:focus-visible{outline:3px solid var(--teal);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 1.25rem}
.narrow{max-width:760px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:.5rem 1rem;z-index:100}
.skip:focus{left:1rem;top:.5rem}

/* ---------- Language switching ---------- */
html.lang-en .zh, html.lang-zh .en{display:none!important}
.no-js .lang-toggle{display:none}
/* Without JS both languages show: inline pairs get a separator, blocks get a divider */
.no-js :is(h1,h2,h3,h4,a,button,summary,strong,dt,th,.pill,.inl) > span.zh::before{content:" / "}
.no-js :is(p,li,dd,td,.lead) > span.zh{display:block;margin-top:.2em}
.no-js div.zh{margin-top:2rem;padding-top:2rem;border-top:2px dashed var(--border)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(10px);-webkit-backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:1rem;min-height:64px;flex-wrap:wrap;padding-top:.4rem;padding-bottom:.4rem}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--text);font-weight:700;margin-right:auto}
.brand:hover{color:var(--text)}
.brand .zh-name{font-weight:500;color:var(--muted)}
.logo-dot{width:40px;height:40px;border-radius:50%;background:#fff;box-shadow:0 0 0 1px var(--border),var(--shadow);display:grid;place-items:center;overflow:hidden;flex:none}
.logo-dot img{width:30px;height:30px;display:block}
.nav{display:flex;flex-wrap:wrap;gap:.15rem .25rem;align-items:center}
.nav a{text-decoration:none;color:var(--text);padding:.4rem .6rem;border-radius:8px;font-size:.95rem;font-weight:500}
.nav a:hover{background:var(--surface);color:var(--text)}
.nav a[aria-current="page"]{color:var(--teal-ink);background:rgba(31,164,164,.1)}
.lang-toggle{display:inline-flex;border:1px solid var(--border);border-radius:999px;padding:2px;background:var(--surface)}
.lang-toggle button{font:inherit;font-size:.85rem;font-weight:600;border:0;background:transparent;color:var(--muted);padding:.3rem .75rem;border-radius:999px;cursor:pointer;min-height:32px}
.lang-toggle button[aria-pressed="true"]{background:#fff;color:var(--teal-ink);box-shadow:var(--shadow)}
@media (max-width:760px){
  .header-inner{gap:.5rem}
  .nav{order:3;width:100%;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:.25rem;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  .nav a{white-space:nowrap;font-size:.9rem}
}

/* ---------- Common ---------- */
main{display:block}
section{padding:3.5rem 0}
.section-alt{background:var(--surface)}
h1,h2,h3{line-height:1.25;letter-spacing:-.01em;color:var(--text)}
h1{font-size:clamp(1.8rem,4vw,2.6rem);margin:.2rem 0 .6rem}
h2{font-size:clamp(1.35rem,3vw,1.75rem);margin:0 0 .75rem}
h3{font-size:1.1rem;margin:0 0 .35rem}
p,li,dd{color:var(--muted)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--teal-ink);margin-bottom:.4rem}
.section-intro{max-width:44em;margin:0 0 2rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.35rem;border-radius:999px;font-weight:600;font-size:1rem;text-decoration:none;border:2px solid transparent;min-height:48px;transition:background .15s,color .15s,border-color .15s}
.btn-cta{background:var(--warm-ink);color:#fff}
.btn-cta:hover{background:#B33A27;color:#fff}
.btn-ghost{border-color:var(--teal-ink);color:var(--teal-ink);background:#fff}
.btn-ghost:hover{background:rgba(31,164,164,.08);color:#0F6060}
.btn small{font-weight:500;opacity:.9}
.apple-glyph{width:18px;height:18px;flex:none}

/* ---------- Hero ---------- */
.hero{padding:4rem 0 3.5rem;background:radial-gradient(1200px 400px at 50% -10%,rgba(31,164,164,.10),transparent 70%),#fff;text-align:center}
.logo-circle{width:136px;height:136px;margin:0 auto 1.25rem;border-radius:50%;background:#fff;display:grid;place-items:center;box-shadow:0 0 0 1px var(--border),0 6px 24px rgba(60,59,57,.10);overflow:hidden}
.logo-circle img{width:108px;height:108px;display:block}
.hero .name-zh{font-size:1.25rem;color:var(--muted);font-weight:500;margin:-.2rem 0 .6rem}
.tagline{font-size:clamp(1.1rem,2.4vw,1.35rem);font-weight:600;color:var(--teal-ink);margin:0 0 1rem}
.hero .lead{max-width:40em;margin:0 auto 1.75rem;font-size:1.075rem}
.cta-row{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center}
.pills{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin:1.75rem 0 0;padding:0;list-style:none}
.pill{background:#fff;border:1px solid var(--border);border-radius:999px;padding:.3rem .8rem;font-size:.875rem;color:var(--text)}
.pill::before{content:"✓ ";color:var(--teal-ink);font-weight:700}

/* ---------- Cards ---------- */
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.25rem 1.1rem;box-shadow:var(--shadow)}
.section-alt .card{border-color:transparent}
.card p{margin:.25rem 0 0;font-size:.95rem}
.icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(31,164,164,.12);color:var(--teal-ink);font-size:1.25rem;margin-bottom:.75rem}
.icon.warm{background:rgba(220,79,57,.10);color:var(--warm-ink)}
.tag{display:inline-block;font-size:.75rem;font-weight:600;padding:.1rem .5rem;border-radius:999px;background:var(--surface);color:var(--muted);margin-left:.35rem;vertical-align:middle}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.2rem}
.steps li::before{content:counter(s);display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--teal-ink);color:#fff;font-weight:700;font-size:.9rem;margin-right:.5rem}
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:.6rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.checklist li{padding-left:1.8rem;position:relative;color:var(--text)}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;width:1.3rem;height:1.3rem;border-radius:50%;background:var(--teal-ink);color:#fff;font-size:.75rem;display:grid;place-items:center;margin-top:.2rem;font-weight:700}
.note{background:#FFF7F5;border:1px solid #F4D3CC;border-left:4px solid var(--warm-ink);border-radius:12px;padding:1rem 1.15rem;color:var(--text)}
.note p{color:var(--text);margin:.25rem 0}
.info{background:var(--surface);border-radius:12px;padding:1rem 1.15rem}
.contact-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}
.contact-box .email{font-size:1.15rem;font-weight:700;word-break:break-all}

/* ---------- Document pages ---------- */
.page-head{padding:2.5rem 0 1.25rem;border-bottom:1px solid var(--border);margin-bottom:1.5rem}
.page-head h1{margin-bottom:.25rem}
.meta{font-size:.9rem;color:var(--muted);margin:0}
.doc{padding:0 0 3rem}
.doc h2{font-size:1.25rem;margin:2rem 0 .5rem;padding-top:.25rem}
.doc h3{font-size:1.05rem;margin:1.25rem 0 .35rem}
.doc ul{padding-left:1.25rem}
.doc li{margin-bottom:.35rem}
.toc{background:var(--surface);border-radius:12px;padding:1rem 1.25rem;margin:0 0 1.5rem}
.toc ol{margin:.25rem 0 0;padding-left:1.25rem;columns:2 240px}
.toc li{margin:.15rem 0}
table{border-collapse:collapse;width:100%;font-size:.95rem;margin:.75rem 0 1rem}
th,td{border:1px solid var(--border);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--surface);color:var(--text)}
td{color:var(--muted)}
.table-wrap{overflow-x:auto}
details{background:#fff;border:1px solid var(--border);border-radius:12px;margin:.6rem 0;padding:0 1.1rem}
details[open]{box-shadow:var(--shadow)}
summary{cursor:pointer;font-weight:600;color:var(--text);padding:.9rem 0;list-style:none;position:relative;padding-right:1.75rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:.75rem;font-size:1.3rem;color:var(--teal-ink);line-height:1}
details[open] summary::after{content:"–"}
details > div{padding:0 0 1rem}
details p{margin:.4rem 0}
.path{font-family:inherit;font-weight:600;color:var(--text);background:var(--surface);padding:.05rem .4rem;border-radius:6px;white-space:normal}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:2.25rem 0 2.5rem;font-size:.9rem}
.footer-grid{display:flex;flex-wrap:wrap;gap:1.5rem 2.5rem;justify-content:space-between}
.footer-brand{display:flex;gap:.75rem;align-items:flex-start;max-width:28rem}
.footer-brand p{margin:.1rem 0;font-size:.875rem}
.footer-links{display:flex;flex-wrap:wrap;gap:.35rem 1.1rem;list-style:none;padding:0;margin:0;align-content:flex-start;max-width:30rem}
.footer-links a{color:var(--text);text-decoration:none}
.footer-links a:hover{color:var(--teal-ink);text-decoration:underline}
.copyright{margin-top:1.5rem;color:var(--muted);font-size:.85rem}

/* ---------- 404 ---------- */
.notfound{text-align:center;padding:5rem 0}
.notfound .code{font-size:4rem;font-weight:800;color:var(--teal);margin:0;line-height:1}

@media (max-width:480px){
  section{padding:2.5rem 0}
  .hero{padding:2.75rem 0 2.5rem}
  .cta-row .btn{width:100%}
}
@media print{.site-header,.lang-toggle,.skip{display:none}.site-footer{background:#fff}}