/* =========================================================
   The Pessary — educational site
   Design system
   Palette: deep teal trust + warm clay accent on clean warm white
   Type: Spectral (display) / IBM Plex Sans (body) + Noto TC for 中文
   ========================================================= */

:root{
  --bg:#FBFAF7;
  --surface:#FFFFFF;
  --ink:#1C2A28;
  --ink-soft:#4C5C58;
  --ink-faint:#7C8A86;

  --teal-900:#173E3A;
  --teal-700:#236A61;
  --teal-500:#3C857B;
  --sage-400:#7BA89E;
  --sage-100:#E4EEEA;
  --sage-50:#EFF5F2;

  --clay:#BE6149;
  --clay-700:#A1503B;
  --clay-soft:#F4E4DC;

  --line:#E7E2D7;
  --line-strong:#D8D2C4;

  --display:"Spectral","Noto Serif TC",Georgia,"Times New Roman",serif;
  --body:"IBM Plex Sans","Noto Sans TC",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;

  --maxw:1120px;
  --readw:42rem;
  --radius:14px;
  --radius-sm:9px;
  --shadow-sm:0 1px 2px rgba(23,62,58,.05),0 2px 8px rgba(23,62,58,.04);
  --shadow-md:0 4px 14px rgba(23,62,58,.08),0 10px 30px rgba(23,62,58,.06);

  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- language switching ---------- */
html[data-lang="en"] .lang-zh{display:none !important;}
html[data-lang="zh"] .lang-en{display:none !important;}
/* keep inline spans inline when shown */
.lang-en,.lang-zh{}

/* ---------- reset / base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:1.0625rem;
  line-height:1.7;
  font-feature-settings:"kern" 1;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
html[data-lang="zh"] body{line-height:1.85;}

img,svg{max-width:100%;display:block;}
a{color:var(--teal-700);text-decoration:none;}
a:hover{color:var(--clay-700);}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.18;color:var(--teal-900);margin:0 0 .5em;letter-spacing:-.01em;}
html[data-lang="zh"] h1,html[data-lang="zh"] h2,html[data-lang="zh"] h3,html[data-lang="zh"] h4{letter-spacing:0;font-weight:600;}
p{margin:0 0 1.1em;}
strong{font-weight:600;color:var(--ink);}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem;}
.read{max-width:var(--readw);}

/* skip link */
.skip{position:absolute;left:-999px;top:0;background:var(--teal-900);color:#fff;padding:.6rem 1rem;border-radius:0 0 8px 0;z-index:200;}
.skip:focus{left:0;}

:focus-visible{outline:3px solid var(--teal-500);outline-offset:2px;border-radius:4px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(251,250,247,.88);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:1rem;min-height:68px;}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--display);font-weight:600;font-size:1.22rem;color:var(--teal-900);white-space:nowrap;}
.brand:hover{color:var(--teal-900);}
.brand .mark{flex:none;}
.nav{display:flex;gap:.25rem;margin-left:auto;align-items:center;flex-wrap:wrap;}
.nav a{
  color:var(--ink-soft);font-weight:500;font-size:.95rem;
  padding:.5rem .7rem;border-radius:8px;line-height:1;white-space:nowrap;
}
.nav a:hover{color:var(--teal-900);background:var(--sage-100);}
.nav a[aria-current="page"]{color:var(--teal-900);background:var(--sage-100);}
.lang-toggle{
  margin-left:.4rem;border:1px solid var(--line-strong);background:var(--surface);
  border-radius:999px;padding:.32rem .5rem;font-family:var(--body);font-size:.82rem;
  font-weight:600;color:var(--ink-soft);cursor:pointer;display:inline-flex;align-items:center;gap:.1rem;
}
.lang-toggle:hover{border-color:var(--teal-500);color:var(--teal-900);}
.lang-toggle .on{color:var(--teal-900);}
.lang-toggle .sep{color:var(--line-strong);margin:0 .15rem;}
.menu-btn{display:none;}

@media (max-width:860px){
  .menu-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line-strong);background:var(--surface);border-radius:9px;cursor:pointer;margin-left:auto;}
  .menu-btn svg{width:20px;height:20px;stroke:var(--teal-900);}
  .nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:.1rem;
    background:var(--surface);border-bottom:1px solid var(--line);
    padding:.6rem 1.5rem 1rem;margin-left:0;
    box-shadow:var(--shadow-md);
    display:none;
  }
  .nav.open{display:flex;}
  .nav a{padding:.7rem .6rem;font-size:1rem;}
  .lang-toggle{margin:.5rem 0 0;align-self:flex-start;}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(120% 90% at 85% -10%,var(--sage-50) 0%,rgba(239,245,242,0) 55%),
  var(--bg);
  border-bottom:1px solid var(--line);}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:2.5rem;align-items:center;padding:4.5rem 0 4rem;}
.hero .eyebrow{font-family:var(--body);font-weight:600;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--clay);margin-bottom:1rem;}
html[data-lang="zh"] .hero .eyebrow{letter-spacing:.18em;}
.hero h1{font-size:clamp(2.1rem,4.6vw,3.4rem);margin-bottom:.6rem;font-weight:600;}
.hero .lede{font-size:1.22rem;color:var(--ink-soft);max-width:34ch;margin-bottom:1.8rem;}
.hero-art{position:relative;}

@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr;gap:2rem;padding:3rem 0 2.5rem;}
  .hero-art{order:-1;max-width:300px;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--body);font-weight:600;font-size:1rem;
  padding:.8rem 1.3rem;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s,box-shadow .18s,border-color .18s;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--teal-900);color:#fff;}
.btn-primary:hover{background:var(--teal-700);color:#fff;box-shadow:var(--shadow-md);}
.btn-ghost{background:transparent;color:var(--teal-900);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--teal-700);color:var(--teal-900);background:var(--surface);}
.btn-clay{background:var(--clay);color:#fff;}
.btn-clay:hover{background:var(--clay-700);color:#fff;box-shadow:var(--shadow-md);}
.btn-row{display:flex;gap:.8rem;flex-wrap:wrap;}

/* ---------- sections ---------- */
.section{padding:4rem 0;}
.section-tight{padding:2.8rem 0;}
.section.alt{background:var(--sage-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{font-family:var(--body);font-weight:600;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--clay);margin-bottom:.8rem;}
html[data-lang="zh"] .eyebrow{letter-spacing:.16em;}
.section h2{font-size:clamp(1.6rem,3vw,2.2rem);}
.section .read p{color:var(--ink-soft);}
.section .read p strong{color:var(--ink);}
.lead{font-size:1.18rem;color:var(--ink-soft);}

.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- feature cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem;margin-top:2rem;}
.cards.two{grid-template-columns:repeat(2,1fr);}
@media (max-width:820px){.cards,.cards.two{grid-template-columns:1fr;}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm);transition:transform .2s var(--ease),box-shadow .2s;}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.card .ico{width:44px;height:44px;border-radius:11px;background:var(--sage-100);display:grid;place-items:center;margin-bottom:1rem;}
.card .ico svg{width:24px;height:24px;stroke:var(--teal-700);}
.card h3{font-size:1.18rem;margin-bottom:.35rem;}
.card p{color:var(--ink-soft);font-size:.98rem;margin:0;}

/* ---------- callout ---------- */
.callout{
  border-left:4px solid var(--clay);
  background:var(--clay-soft);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:1.1rem 1.3rem;margin:1.8rem 0;color:var(--ink);
}
.callout.info{border-left-color:var(--teal-500);background:var(--sage-100);}
.callout p{margin:0;}
.callout .ttl{font-weight:600;display:block;margin-bottom:.2rem;color:var(--teal-900);}

/* ---------- steps ---------- */
.steps{counter-reset:step;display:grid;gap:1.1rem;margin:1.8rem 0;}
.step{display:grid;grid-template-columns:auto 1fr;gap:1rem;align-items:start;}
.step .n{counter-increment:step;flex:none;width:38px;height:38px;border-radius:50%;background:var(--teal-900);color:#fff;font-family:var(--display);font-weight:600;display:grid;place-items:center;}
.step .n::before{content:counter(step);}
.step h3{font-size:1.08rem;margin-bottom:.2rem;}
.step p{margin:0;color:var(--ink-soft);font-size:.98rem;}

/* ---------- types grid ---------- */
.type-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2rem;}
@media (max-width:880px){.type-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:540px){.type-grid{grid-template-columns:1fr;}}
.type-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s var(--ease),box-shadow .2s;display:flex;flex-direction:column;}
.type-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.type-fig{background:#fff;border-bottom:1px solid var(--line);padding:1rem;display:grid;place-items:center;}
.type-fig img{width:100%;max-width:180px;height:150px;object-fit:contain;mix-blend-mode:multiply;}
.type-fig svg{width:96px;height:96px;}
.type-body{padding:1.2rem 1.3rem 1.4rem;}
.type-body h3{font-size:1.15rem;margin-bottom:.1rem;}
.type-body .sub{font-family:var(--body);font-size:.82rem;color:var(--ink-faint);font-weight:500;margin-bottom:.6rem;}
.type-body p{font-size:.95rem;color:var(--ink-soft);margin:0 0 .8rem;}
.tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:auto;}
.tag{font-size:.74rem;font-weight:600;background:var(--sage-100);color:var(--teal-700);padding:.2rem .55rem;border-radius:999px;}

/* ---------- selector / quiz ---------- */
.selector{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:1.8rem;margin-top:1.5rem;}
.selector .q{font-family:var(--display);font-size:1.3rem;color:var(--teal-900);margin-bottom:.3rem;}
.selector .qhint{color:var(--ink-faint);font-size:.92rem;margin-bottom:1.2rem;}
.opts{display:grid;gap:.7rem;}
.opt{
  text-align:left;background:var(--bg);border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);
  padding:1rem 1.1rem;cursor:pointer;font-family:var(--body);font-size:1rem;color:var(--ink);
  transition:border-color .15s,background .15s,transform .15s var(--ease);display:flex;gap:.8rem;align-items:flex-start;
}
.opt:hover{border-color:var(--teal-500);background:var(--sage-50);}
.opt .ot{font-weight:600;color:var(--teal-900);display:block;}
.opt .od{font-size:.9rem;color:var(--ink-soft);display:block;margin-top:.1rem;}
.opt .dot{flex:none;width:20px;height:20px;border-radius:50%;border:2px solid var(--sage-400);margin-top:.15rem;}
.sel-progress{display:flex;align-items:center;gap:.6rem;font-size:.8rem;color:var(--ink-faint);font-weight:600;letter-spacing:.05em;text-transform:uppercase;margin-bottom:1rem;}
.sel-progress .bar{flex:1;height:4px;background:var(--line);border-radius:2px;overflow:hidden;}
.sel-progress .bar i{display:block;height:100%;background:var(--teal-500);transition:width .4s var(--ease);}
.sel-back{background:none;border:0;color:var(--teal-700);font-family:var(--body);font-weight:600;cursor:pointer;padding:.3rem 0;margin-top:1rem;font-size:.92rem;}
.sel-back:hover{color:var(--clay-700);}
.result{display:grid;grid-template-columns:auto 1fr;gap:1.4rem;align-items:center;}
@media (max-width:560px){.result{grid-template-columns:1fr;text-align:center;}}
.result .rfig{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem;}
.result .rfig svg{width:110px;height:110px;margin:0 auto;}
.result .rfig img{width:100%;max-width:160px;height:140px;object-fit:contain;margin:0 auto;mix-blend-mode:multiply;}
.result .rlabel{font-family:var(--body);font-weight:600;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--clay);margin-bottom:.4rem;}
.result h3{font-size:1.7rem;margin-bottom:.3rem;}
.result .alts{font-size:.92rem;color:var(--ink-faint);margin-top:.6rem;}
.hidden{display:none !important;}

/* ---------- comparison table ---------- */
.table-scroll{overflow-x:auto;margin-top:1.5rem;border:1px solid var(--line);border-radius:var(--radius);}
table.matrix{border-collapse:collapse;width:100%;font-size:.92rem;background:var(--surface);min-width:640px;}
table.matrix th,table.matrix td{padding:.7rem .8rem;text-align:left;border-bottom:1px solid var(--line);}
table.matrix thead th{background:var(--teal-900);color:#fff;font-weight:600;font-family:var(--body);position:sticky;top:0;font-size:.85rem;}
table.matrix tbody th{font-weight:600;color:var(--teal-900);background:var(--sage-50);}
table.matrix tbody tr:hover{background:var(--sage-50);}
table.matrix .yes{color:var(--teal-700);font-weight:700;}
table.matrix .no{color:var(--line-strong);}

/* ---------- form ---------- */
.form{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:1.8rem;}
.field{margin-bottom:1.1rem;}
.field label{display:block;font-weight:600;font-size:.92rem;color:var(--teal-900);margin-bottom:.35rem;}
.field .req{color:var(--clay);}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--body);font-size:1rem;color:var(--ink);
  background:var(--bg);border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);
  padding:.7rem .85rem;transition:border-color .15s,background .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal-500);background:var(--surface);}
.field textarea{resize:vertical;min-height:120px;}
.field .hint{font-size:.82rem;color:var(--ink-faint);margin-top:.3rem;}
.form-note{font-size:.85rem;color:var(--ink-faint);margin-top:1rem;}
.form-status{margin-top:1rem;padding:.8rem 1rem;border-radius:var(--radius-sm);font-size:.95rem;display:none;}
.form-status.show{display:block;}
.form-status.ok{background:var(--sage-100);color:var(--teal-900);}

/* ---------- contact info strip ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start;}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr;}}
.contact-list{list-style:none;padding:0;margin:1rem 0 0;}
.contact-list li{display:flex;gap:.8rem;align-items:flex-start;padding:.7rem 0;border-bottom:1px solid var(--line);}
.contact-list li:last-child{border-bottom:0;}
.contact-list svg{width:22px;height:22px;stroke:var(--teal-700);flex:none;margin-top:.15rem;}
.contact-list .k{font-weight:600;color:var(--teal-900);display:block;font-size:.88rem;}
.contact-list .v{color:var(--ink-soft);}

/* ---------- footer ---------- */
.site-footer{background:var(--teal-900);color:#D7E5E0;margin-top:0;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;padding:3rem 0 2.2rem;}
@media (max-width:820px){.footer-top{grid-template-columns:1fr;gap:1.6rem;}}
.site-footer h4{color:#fff;font-family:var(--body);font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;font-weight:600;margin-bottom:.9rem;}
.site-footer .fbrand{font-family:var(--display);font-size:1.3rem;color:#fff;margin-bottom:.6rem;}
.site-footer p{color:#B9CEC8;font-size:.95rem;}
.site-footer ul{list-style:none;padding:0;margin:0;}
.site-footer ul li{margin-bottom:.5rem;}
.site-footer a{color:#D7E5E0;}
.site-footer a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:1.4rem 0;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.85rem;color:#9FB8B1;}
.disclaimer{background:rgba(0,0,0,.16);border-radius:var(--radius-sm);padding:1rem 1.2rem;font-size:.85rem;color:#B9CEC8;margin-top:1.4rem;}

/* ---------- breadcrumb / page head ---------- */
.page-head{background:var(--sage-50);border-bottom:1px solid var(--line);padding:3rem 0 2.6rem;}
.page-head .eyebrow{margin-bottom:.6rem;}
.page-head h1{font-size:clamp(1.9rem,4vw,2.8rem);margin-bottom:.4rem;}
.page-head p{color:var(--ink-soft);max-width:52ch;margin:0;font-size:1.1rem;}

/* ---------- misc utility ---------- */
.center{text-align:center;}
.mt-0{margin-top:0;}
.mb-0{margin-bottom:0;}
ul.clean{list-style:none;padding:0;margin:1.2rem 0;}
ul.clean li{position:relative;padding-left:1.7rem;margin-bottom:.7rem;color:var(--ink-soft);}
ul.clean li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:2px;background:var(--sage-400);}
dl.faq{margin:1.5rem 0;}
dl.faq dt{font-family:var(--display);font-weight:600;color:var(--teal-900);font-size:1.12rem;margin-top:1.4rem;}
dl.faq dd{margin:.3rem 0 0;color:var(--ink-soft);}

/* scroll reveal */
html.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
html.js .reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){html.js .reveal{opacity:1;transform:none;transition:none;}}