/* ============================================================
   windsify.com — shared stylesheet
   "Switcher's Bridge" (direction C, approved 2026-08-07)
   Contract: DESIGN.md · Visual reference: reference/mockup-c.html
   ============================================================ */

/* ---------- design tokens ---------- */
:root{
  --bg:#FFFFFF;
  --band:#F4F8FD;
  --ink:#0C1B33;
  --mut:#5D6B80;
  --faint:#8592A4;
  --line:#E4EAF2;
  --hairline:#EDF1F7;
  --blue:#0A66D6;
  --blue-deep:#0A5BC0;
  --graphite:#1D1D1F;
  --teal:#0FA47A;
  --body-ink:#44526A;
  --key-line:#D7DFEA;

  --tint-blue:#EAF2FE;  --deep-blue:#0A66D6;
  --tint-teal:#E7F6F2;  --deep-teal:#0FA47A;
  --tint-amber:#FDF3E3; --deep-amber:#DB8B0A;
  --tint-rose:#FDECEC;  --deep-rose:#D64545;

  --shadow-btn:0 8px 24px rgba(10,102,214,.28);
  --shadow-card:0 14px 34px rgba(12,27,51,.08);
  --shadow-float:0 16px 36px rgba(12,27,51,.14);

  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,monospace;
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:var(--blue-deep)}
img{max-width:100%}
h1,h2,h3,p{margin:0}
a:focus-visible,
summary:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* ---------- nav ---------- */
.nav{display:flex;align-items:center;gap:24px;padding:18px 40px;border-bottom:1px solid var(--hairline)}
.brand{display:flex;align-items:center;gap:10px;font-size:16.5px;font-weight:700;color:var(--ink)}
.brand img{width:28px;height:28px;border-radius:7px}
.nav-links{display:flex;gap:22px;margin-left:auto;font-size:14px}
.nav-links a{color:var(--mut)}
.nav-links a:hover{color:var(--ink)}
.btn-nav{background:var(--blue);color:#fff;border-radius:999px;padding:7px 16px;font-size:13.5px;font-weight:600}

/* ---------- hero ---------- */
.hero{
  text-align:center;
  padding:70px 24px 20px;
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#F7FAFE 0%,#FFFFFF 88%);
}
.eyebrow{
  display:inline-block;
  background:var(--tint-blue);
  color:var(--blue-deep);
  border-radius:999px;
  padding:5px 14px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
h1{
  font-size:clamp(32px,5.6vw,58px);
  font-weight:800;
  letter-spacing:-.035em;
  line-height:1.08;
  margin:22px auto 0;
  max-width:15em;
  text-wrap:balance;
}
h1 .accent{color:var(--blue)}
.sub{color:var(--mut);max-width:37em;margin:18px auto 0;font-size:17px;line-height:1.7}
.cta-row{display:flex;gap:12px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.btn{
  background:var(--blue);
  color:#fff;
  font-weight:650;
  border-radius:12px;
  padding:13px 26px;
  font-size:15.5px;
  box-shadow:var(--shadow-btn);
}
.btn-secondary{
  border:1.5px solid var(--key-line);
  color:var(--ink);
  font-weight:600;
  border-radius:12px;
  padding:12px 22px;
  font-size:15px;
  background:#fff;
}
.btn-block{display:block;text-align:center}
.trust{font-size:13px;color:var(--faint);margin-top:16px}
.ver{margin-left:8px;font-size:13px;font-weight:500;opacity:.85}
.ver:empty{display:none}

/* ---------- keycap equation ---------- */
.equation{display:flex;align-items:center;justify-content:center;gap:16px;margin:44px auto 0;flex-wrap:wrap;padding:0 16px}
.side{
  display:flex;align-items:center;gap:8px;
  padding:16px 20px;border-radius:16px;
  background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.side.winside{border-top:3px solid var(--blue)}
.side.macside{border-top:3px solid var(--graphite)}
.oslabel{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-right:6px}
.winside .oslabel{color:var(--blue)}
.macside .oslabel{color:var(--graphite)}
.kc{
  background:linear-gradient(180deg,#FDFEFF,#EEF2F8);
  border:1px solid var(--key-line);
  border-bottom-width:3px;
  border-radius:9px;
  min-width:44px;height:46px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:650;padding:0 12px;
  color:var(--ink);
  font-family:var(--font-mono);
}
.eq{font-size:22px;color:var(--faint);font-weight:700}
.eqnote{width:100%;text-align:center;font-size:13.5px;color:var(--faint);margin:10px 0 0}

/* ---------- feature tiles ---------- */
.tiles-wrap{padding:58px 24px 96px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;max-width:980px;margin:0 auto}
.tile{border-radius:18px;padding:22px;text-align:left}
.tile h3{margin:12px 0 6px;font-size:16.5px;font-weight:700}
.tile p{font-size:13.5px;line-height:1.65;color:var(--body-ink)}
.tile .ic{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;color:#fff}
.tile-blue{background:var(--tint-blue)}   .tile-blue .ic{background:var(--deep-blue)}
.tile-teal{background:var(--tint-teal)}   .tile-teal .ic{background:var(--deep-teal)}
.tile-amber{background:var(--tint-amber)} .tile-amber .ic{background:var(--deep-amber)}
.tile-rose{background:var(--tint-rose)}   .tile-rose .ic{background:var(--deep-rose)}

/* ---------- sections ---------- */
.section{padding:104px 24px}
.section-band{background:var(--band)}
.container{max-width:1080px;margin:0 auto}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
h2{
  font-size:clamp(24px,3.4vw,36px);
  font-weight:750;
  letter-spacing:-.025em;
  line-height:1.2;
  text-wrap:balance;
}
.section-head h2{margin:14px 0 0}
.section-note{text-align:center;font-size:13.5px;color:var(--faint);max-width:44em;margin:22px auto 0}
.more-link{text-align:center;font-size:14.5px;margin:28px 0 0}
.more-link a{font-weight:600}
.more-link a:hover{color:var(--blue)}

/* ---------- keyboard section ---------- */
.table-scroll{
  overflow-x:auto;
  max-width:720px;margin:0 auto;
  border:1px solid var(--line);border-radius:16px;
  background:#fff;box-shadow:var(--shadow-card);
}
.shortcut-table{width:100%;border-collapse:collapse;font-size:14.5px;text-align:left}
.shortcut-table th{
  padding:14px 22px 11px;
  font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--faint);
  border-bottom:1px solid var(--line);
}
.shortcut-table td{padding:11px 22px;color:var(--body-ink)}
.shortcut-table tbody tr:not(:first-child) td{border-top:1px solid var(--hairline)}
.shortcut-table .keys{font-family:var(--font-mono);font-size:13.5px;font-weight:600;color:var(--ink);white-space:nowrap;width:42%}
kbd{
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  background:linear-gradient(180deg,#FDFEFF,#EEF2F8);
  border:1px solid var(--key-line);border-bottom-width:2px;border-radius:6px;
  padding:1px 7px;color:var(--ink);white-space:nowrap;
}
.context-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;max-width:980px;margin:40px auto 0}
.context-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow-card)}
.context-card h3{margin:0 0 8px;font-size:16.5px;font-weight:700}
.context-card p{font-size:14px;line-height:1.7;color:var(--body-ink)}

/* ---------- window section: snap demo ---------- */
.demo{max-width:760px;margin:0 auto}
.demo-label{text-align:center;font-size:13.5px;color:var(--faint);margin:0 0 14px}
.desktop{
  position:relative;height:250px;border-radius:16px;
  border:1px solid var(--line);
  background:linear-gradient(180deg,#F4F8FD,#EAF1F9);
  overflow:hidden;box-shadow:inset 0 1px 0 #fff;
}
.menubar{height:22px;background:rgba(255,255,255,.72);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:6px;padding:0 10px}
.menubar i{width:7px;height:7px;border-radius:50%;background:#D3DCE8;display:block}
.ghost{
  position:absolute;top:32px;bottom:10px;left:10px;width:calc(50% - 15px);
  border:2px dashed rgba(10,102,214,.5);border-radius:12px;
  background:rgba(10,102,214,.06);opacity:0;
}
.win{
  position:absolute;top:58px;left:34%;width:44%;height:126px;border-radius:12px;
  background:#fff;border:1px solid #E0E7F0;box-shadow:var(--shadow-float);
}
.win .tb{height:22px;border-bottom:1px solid var(--hairline);display:flex;align-items:center;gap:5px;padding:0 9px}
.win .tb i{width:7px;height:7px;border-radius:50%;display:block}
.win .tb i:nth-child(1){background:#E8695A}
.win .tb i:nth-child(2){background:#E7B04C}
.win .tb i:nth-child(3){background:#6CBE5D}
.key-chips{display:flex;justify-content:center;margin-top:14px;gap:8px}
.kmini{font-size:12.5px;color:var(--blue-deep);border:1px solid #BFD7F5;border-radius:7px;padding:3px 10px;background:var(--tint-blue);font-weight:600;font-family:var(--font-mono);white-space:nowrap}

/* ---------- window shortcut list ---------- */
.win-shortcuts{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;max-width:840px;margin:44px auto 0}
.ws{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;
}
.ws .does{font-size:13.5px;color:var(--mut)}

/* ---------- conflict + privacy ---------- */
.duo{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;max-width:980px;margin:0 auto}
.duo-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow-card)}
.duo-card h3{margin:0 0 10px;font-size:18px;font-weight:700}
.duo-card p{font-size:14.5px;line-height:1.7;color:var(--body-ink);margin:0 0 12px}
.duo-card p:last-child{margin-bottom:0}
.duo-card strong{color:var(--ink)}
.detect{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.detect span{font-size:12.5px;font-weight:600;color:var(--mut);background:var(--band);border:1px solid var(--key-line);border-radius:8px;padding:4px 10px}

/* ---------- pricing ---------- */
.pricing{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;max-width:780px;margin:0 auto}
.price{border:1px solid var(--line);border-radius:20px;padding:28px;background:#fff}
.price.hot{border:2px solid var(--blue);box-shadow:0 18px 44px rgba(10,102,214,.14);position:relative}
.price.hot .flag{
  position:absolute;top:-12px;left:24px;
  background:var(--blue);color:#fff;
  font-size:11.5px;font-weight:700;border-radius:999px;padding:3px 12px;letter-spacing:.04em;
}
.price-title{font-size:14px;font-weight:700;color:var(--mut)}
.amt{font-size:36px;font-weight:800;letter-spacing:-.02em;margin:8px 0 2px}
.amt small{font-size:14px;color:var(--faint);font-weight:500}
.price ul{margin:14px 0 0;padding:0;list-style:none;font-size:14px;color:var(--body-ink)}
.price li{margin:8px 0;padding-left:22px;position:relative}
.price li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:700}
.price .btn-block{margin-top:22px}
.price-note{margin:12px 0 0;font-size:13px;color:var(--faint);text-align:center}
.price-note a{font-weight:600}

/* ---------- comparison strip ---------- */
.compare{max-width:640px;margin:26px auto 0}
.comparebox{
  background:var(--band);border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:center;
  font-size:13.5px;color:var(--body-ink);
}
.section-band .comparebox{background:#fff}
.cchip{background:#fff;border:1px solid var(--key-line);border-radius:8px;padding:4px 10px;font-weight:600;font-size:12.5px;color:var(--ink)}
.cchip.hot{border-color:var(--blue);color:var(--blue-deep)}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin:10px 0}
.faq summary{
  cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;font-weight:650;font-size:15.5px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;font-size:19px;line-height:1;color:var(--faint);font-weight:600}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 20px 18px;font-size:14.5px;line-height:1.7;color:var(--body-ink)}

/* ---------- final CTA band ---------- */
.cta-band{text-align:center;padding:104px 24px;background:linear-gradient(180deg,#F7FAFE 0%,#FFFFFF 88%)}
.cta-icon{width:72px;height:72px;border-radius:16px;box-shadow:var(--shadow-card)}
.cta-band h2{margin:20px 0 0}
.cta-band .sub{margin-top:14px}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--hairline);padding:22px 40px;display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--faint)}
.foot > span{margin-right:auto}
.foot a{color:var(--faint)}
.foot a:hover{color:var(--ink)}

/* ---------- motion (all animation lives here) ---------- */
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}

  /* signature 1: equation float */
  .side.macside{animation:mcPulse 3.2s ease-in-out infinite}
  @keyframes mcPulse{0%,100%{transform:translateY(0)} 50%{transform:translateY(-4px)}}

  /* signature 2: snap demo */
  .win{animation:mcSnap 7s ease-in-out infinite}
  .ghost{animation:mcGhost 7s ease-in-out infinite}
  @keyframes mcSnap{
    0%,12%{top:58px; left:34%; width:44%; height:126px}
    22%,46%{top:32px; left:10px; width:calc(50% - 15px); height:calc(100% - 42px)}
    56%,80%{top:32px; left:50.5%; width:calc(50% - 15px); height:calc(100% - 42px)}
    90%,100%{top:58px; left:34%; width:44%; height:126px}
  }
  @keyframes mcGhost{6%,14%{opacity:1} 0%,22%,100%{opacity:0}}

  /* signature 3: subtle hover lifts */
  .btn,.btn-secondary,.btn-nav,.tile{transition:transform .18s ease,box-shadow .18s ease}
  .btn:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(10,102,214,.34)}
  .btn-secondary:hover{transform:translateY(-1px)}
  .btn-nav:hover{transform:translateY(-1px)}
  .tile:hover{transform:translateY(-2px)}
}

/* ---------- responsive ---------- */
@media (max-width:640px){
  .nav{padding:14px 20px}
  .nav-links{display:none}
  .hero{padding:56px 20px 16px}
  .tiles-wrap{padding:40px 20px 64px}
  .section{padding:64px 20px}
  .cta-band{padding:72px 20px}
  .foot{padding:22px 24px}
  .section-head{margin-bottom:32px}
  .shortcut-table th,.shortcut-table td{padding-left:16px;padding-right:16px}
  .duo-card,.price{padding:24px 20px}
}

/* shortcuts page */
.ref-main{max-width:768px;margin:0 auto;padding:8px 24px 104px}
.ref-group{margin-top:56px}
.ref-group h2{font-size:22px;margin:0 0 16px}
.shortcut-table caption{caption-side:top;text-align:left;padding:14px 22px 2px;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.ref-note{font-size:14px;line-height:1.7;color:var(--body-ink);margin:16px 4px 0}
@media (max-width:640px){
  .ref-main{padding-bottom:72px}
  .ref-group{margin-top:44px}
  .shortcut-table caption{padding-left:16px;padding-right:16px}
}

/* prose pages */
.prose-main{max-width:46em;margin:0 auto;padding:56px 24px 104px}
.prose-main h1{font-size:clamp(30px,4.6vw,42px);margin:14px 0 0;max-width:none}
.prose-main h2{font-size:21px;margin:44px 0 0}
.prose-main p{font-size:15.5px;line-height:1.75;color:var(--body-ink);margin:14px 0 0}
.prose-main ol,.prose-main ul{font-size:15.5px;line-height:1.75;color:var(--body-ink);margin:14px 0 0;padding-left:26px}
.prose-main li{margin:8px 0}
.prose-main li::marker{color:var(--faint);font-weight:600}
.prose-main .lede{color:var(--mut);font-size:16.5px}
.prose-main .prose-updated{font-size:13px;color:var(--faint);margin:10px 0 0}
.prose-main .faq{margin-top:18px}
.prose-main .faq p{margin:0}
@media (max-width:640px){
  .prose-main{padding:40px 20px 72px}
}

/* revision 2026-08-07: payment-first */
.pricing-single{grid-template-columns:minmax(0,420px);justify-content:center}
.comparebox .coexist{width:100%;text-align:center;font-size:12.5px;color:var(--faint);margin-top:2px}