/* ============================================================
   EMS-Trade · design-tokens.css
   Style card A · Silicon White (Apple keynote)
   Signature: blue Learn-more links · #F5F5F7 rounded cards · X14 band cards
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root{
  /* palette */
  --bg:#FFFFFF;
  --ink:#1D1D1F;
  --muted:#6E6E73;
  --card:#F5F5F7;
  --deep:#0B0B0C;
  --deep-card:#1B1B1D;
  --link:#0066CC;
  --btn:#0071E3;
  --pill:#0066CC;
  --hair:#D2D2D7;
  --soft:#E8E8EA;
  --good:#0A8A3F;

  /* type */
  --font:'Inter',-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --fs-hero:58px; --fs-h1:46px; --fs-h2:40px; --fs-h3:30px;
  --fs-body:17px; --fs-small:13px; --fs-tiny:12px;

  /* rhythm */
  --pad:44px;
  --radius:24px; --radius-lg:28px; --radius-img:18px; --pill:980px;
  --gap:20px;

  /* motion */
  --ease: cubic-bezier(.25,.1,.25,1);
  --t: 220ms;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:var(--fs-body);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.025em;line-height:1.1}
.page-title{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2);margin-bottom:16px}
h3{font-size:var(--fs-h3);margin-bottom:16px}

/* layout */
.wrap{max-width:1120px;margin:0 auto;padding:0 var(--pad)}
.sec{padding:72px 0}
.sec-narrow{max-width:760px}

/* ---------- nav ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(1.8) blur(20px);border-bottom:1px solid rgba(0,0,0,.06)}
.site-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.nav-brand a{display:flex;align-items:center;min-height:40px;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.02em}
.nav-brand img{width:194px;height:22px;max-width:100%}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links>a,.nav-links .dd>button{display:inline-block;padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500;color:var(--ink);background:none;border:0;cursor:pointer;font-family:var(--font)}
.nav-links>a:hover,.nav-links .dd>button:hover{color:var(--link)}
.nav-links a.active{color:var(--link)}
.nav-links .cta{border:1px solid var(--link);color:var(--link)!important;border-radius:980px;padding:8px 18px;font-weight:600}
.nav-links .cta:hover{background:var(--link);color:#fff!important}
.dd{position:relative}
.dd .m{display:none;position:absolute;top:calc(100% + 8px);left:0;background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:8px;min-width:240px;box-shadow:0 14px 40px rgba(0,0,0,.12)}
.dd:hover .m{display:block}
.dd .m a{display:block;padding:12px 12px;border-radius:8px;font-size:14px}
.dd .m a:hover{background:var(--card)}
.dd .m a small{display:block;color:var(--muted);font-size:14px;margin-top:1px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
@media(max-width:860px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:56px;left:0;right:0;background:#fff;border-bottom:1px solid rgba(0,0,0,.08);flex-direction:column;align-items:stretch;padding:12px 16px;gap:2px;box-shadow:0 16px 30px rgba(0,0,0,.08)}
  .nav-links.open{display:flex}
  .nav-links .dd,.nav-links .dd .m{position:static}
  .dd .m{display:block;box-shadow:none;border:0;padding-left:18px}
  .nav-links>a,.nav-links .dd>button{width:100%;text-align:left;padding:11px 10px}
}

/* ---------- hero P1a · image below ---------- */
.hero{text-align:center;padding:clamp(40px,6vw,60px) 0 clamp(18px,3vw,32px)}
.hero .h1{font-size:var(--fs-hero);letter-spacing:-.035em;max-width:14ch;margin:0 auto 16px}
.hero .sub{font-size:19px;line-height:1.5;color:var(--muted);max-width:38ch;margin:0 auto 8px}
.hero .hero-media{margin:34px auto 0;border-radius:22px;overflow:hidden}
.hero .hero-media img{width:100%;height:auto}
.blink{color:var(--link);font-size:15px;font-weight:500;display:inline-flex;align-items:center;min-height:40px;padding:0 2px}
.blink::after{content:" ›";margin-left:2px}
.blink:hover{text-decoration:underline}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- eyebrow (rare, mono utility) ---------- */
.eyebrow{font-family:var(--font-mono);font-size:14px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}

/* ---------- X14 Apple band card ---------- */
.aband{background:var(--soft);border-radius:var(--radius-lg);padding:clamp(36px,4vw,54px) 24px 0;text-align:center;overflow:hidden;margin:14px 0}
.aband.tint-c{background:var(--card)}
.aband h2{font-size:clamp(30px,4vw,44px);letter-spacing:-.03em;margin-bottom:10px}
.aband p{font-size:16px;color:var(--muted);margin-bottom:12px;max-width:52ch;margin-left:auto;margin-right:auto}
.aband .media{margin:26px auto 0;border-radius:var(--radius-img) var(--radius-img) 0 0;overflow:hidden;max-width:980px}
.aband .media img{width:100%;height:auto}

/* ---------- X1 gray card ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);padding:0 4px}
.card-grid.g2{grid-template-columns:repeat(2,1fr)}
.card-grid.g4{grid-template-columns:repeat(4,1fr)}
.gcard{background:var(--card);border-radius:var(--radius);padding:28px 24px;transition:transform var(--t) var(--ease)}
.gcard:hover{transform:translateY(-3px)}
.gcard .ic{width:44px;height:44px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.gcard .ic svg{width:22px;height:22px;stroke:var(--ink)}
.gcard h3{font-size:20px;margin-bottom:8px;letter-spacing:-.01em}
.gcard p{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:10px}
.gcard .blink{font-size:14px}

/* ---------- X7 stats dark band ---------- */
.stats{background:var(--deep);border-radius:var(--radius-lg);padding:clamp(32px,4vw,48px) 26px;text-align:center;margin:14px 0}
.stats h2{color:#fff;margin-bottom:26px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat-grid .n{font-size:clamp(34px,4vw,44px);font-weight:700;letter-spacing:-.03em;color:#fff}
.stat-grid .n i{font-style:normal;font-size:18px;color:#86868B}
.stat-grid .l{font-size:14px;color:#86868B;margin-top:6px}

/* ---------- X8 mono strip ---------- */
.mstrip{border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:22px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mstrip .s{display:flex;align-items:baseline;gap:12px}
.mstrip .n{font-family:var(--font-mono);font-weight:600;font-size:28px}
.mstrip .l{font-size:14px;color:var(--muted)}

/* ---------- X2 changelog rows ---------- */
.rows{border-top:1px solid var(--hair)}
.row{display:grid;grid-template-columns:78px 1fr auto 24px;gap:16px;align-items:center;padding:17px 6px;border-bottom:1px solid var(--hair);transition:background var(--t)}
.row:hover{background:var(--card)}
.row .id{font:600 14px var(--font-mono);color:var(--muted)}
.row .nm{font-size:15.5px;font-weight:600}
.row .nm small{display:block;font-weight:400;font-size:14px;color:var(--muted);margin-top:3px}
.row .arr{color:var(--link);font-size:16px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font:14px var(--font-mono);border:1px solid var(--hair);padding:4px 9px;border-radius:6px;background:#fff;color:#4A4A46;white-space:nowrap}

/* ---------- P2 split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin:14px 0}
.split.rev .split-media{order:2}
.split .split-media{border-radius:var(--radius);overflow:hidden}
.split .split-media img{width:100%;height:100%;object-fit:cover}
.split .split-body p{color:#3A3A3C;margin-bottom:12px}
.split .split-body .blink{margin-top:6px;font-size:14px}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:20px}.split.rev .split-media{order:0}}

/* ---------- P5 spec table ---------- */
.tbl-wrap{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:#fff}
.tbl th{font:600 14px var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--ink);padding:10px 12px;text-align:left}
.tbl td{border-bottom:1px solid #E5E5E7;padding:12px;vertical-align:top}
.tbl td:first-child{font-weight:600}
.tbl tr:hover td{background:var(--card)}

/* ---------- P6 steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin:14px 0}
.step{padding:18px 6px 0;border-top:3px solid var(--ink)}
.step .no{font:700 14px var(--font-mono);color:var(--link);display:block;margin-bottom:8px}
.step h4,.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:14px;color:var(--muted);line-height:1.55}

/* ---------- X4 compare ---------- */
.compare{width:100%;border-collapse:collapse;font-size:14px}
.compare th{font:600 14px var(--font-mono);letter-spacing:.1em;border:1px solid var(--hair);background:var(--card);padding:11px 14px;text-align:left}
.compare th.us{color:#fff;background:var(--link)}
.compare td{border:1px solid var(--hair);padding:13px 14px;background:#fff}
.compare td.g{color:#B4B4B6}
.compare td.g::before{content:"✗ ";color:#C9C9CB}
.compare td.u{font-weight:600;color:#043C8C;background:#F2F6FC}
.compare td.u::before{content:"✓ ";color:var(--link)}

/* ---------- X5 terminal ---------- */
.term{background:#16181D;border-radius:14px;border:1px solid #2A2D35;overflow:hidden;font:14px var(--font-mono)}
.term-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;background:#1E2128;border-bottom:1px solid #2A2D35}
.term-bar i{width:10px;height:10px;border-radius:50%;background:#444;display:inline-block}
.term-bar .t{margin-left:6px;color:#8E8E93;font-size:14px;letter-spacing:.08em}
.term-body{padding:16px 18px;color:#B8BCC4;line-height:1.7;white-space:pre-wrap}
.term-body .ok{color:#5BD66A}
.term-body .hy{color:#7FB4F2}
.term-body .cm{color:#5A5F6A}
.term-body .cur{display:inline-block;width:7px;height:13px;background:#7FB4F2;vertical-align:-2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- X6 checklist ---------- */
.checklist{border:1px solid var(--hair);background:#fff;border-radius:14px;overflow:hidden}
.checkrow{display:flex;align-items:flex-start;gap:12px;padding:13px 18px;border-bottom:1px solid #EFEFF1;font-size:14px}
.checkrow:last-child{border-bottom:0}
.checkrow .tick{font-weight:700;color:var(--good);flex:none}
.checkrow .tick::before{content:'\2713';margin-right:4px}
.checkrow .note{margin-left:auto;font:14px var(--font-mono);color:var(--muted);white-space:nowrap;padding-left:12px}

/* ---------- P7 FAQ ---------- */
.faq{border:1px solid var(--hair);border-radius:14px;background:#fff;overflow:hidden;margin:14px 0}
.faq details{border-bottom:1px solid #EFEFF1}
.faq details:last-child{border-bottom:0}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:14.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'';width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform var(--t);flex:none}
.faq details[open] summary::after{transform:rotate(225deg)}
.faq .a{padding:0 20px 16px;font-size:14px;color:#3A3A3C;line-height:1.7}

/* ---------- P9 CTA ---------- */
.cta{background:var(--card);border-radius:var(--radius-lg);padding:clamp(40px,5vw,64px) 24px;text-align:center;margin:14px 0}
.cta h2{margin-bottom:12px}
.cta p{font-size:17px;color:var(--muted);margin:0 auto 22px;max-width:48ch}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--btn);color:#fff;padding:13px 28px;border-radius:var(--pill);font-weight:600;font-size:15px;border:0;cursor:pointer;font-family:var(--font);transition:scale var(--t) var(--ease)}
.btn:hover{scale:1.03}
.btn.ghost{background:var(--card);color:var(--ink)}
.btn.small{padding:9px 18px;font-size:14px}

/* ---------- P10 timeline ---------- */
.tl{list-style:none;margin-top:24px;border-left:0}
.tl li{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:14px 0;border-bottom:1px solid var(--hair)}
.tl .y{font:600 14px var(--font-mono);color:var(--link);padding-top:2px}
.tl .e h4,.tl .e h3{font-size:16px;margin-bottom:4px}
.tl .e p{font-size:14px;color:var(--muted);line-height:1.6}

/* ---------- P11 cert wall / chips ---------- */
.cert-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:14px 0}
.cert{background:#fff;border:1px solid var(--hair);border-radius:16px;padding:18px;text-align:center}
.cert b{display:block;font-size:15px;margin-bottom:4px}
.cert span{font-size:14px;color:var(--muted);line-height:1.5;display:block}
@media(max-width:860px){.cert-wall{grid-template-columns:repeat(2,1fr)}}

/* ---------- P8 card-link grid ---------- */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.pgrid.g4{grid-template-columns:repeat(4,1fr)}
.plink{display:block;border:1px solid var(--hair);border-radius:var(--radius);padding:22px;background:#fff;transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease)}
.plink:hover{box-shadow:0 12px 30px rgba(0,0,0,.08);transform:translateY(-3px)}
.plink h3{font-size:16.5px;margin-bottom:6px}
.plink p{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:8px}
.plink .blink{font-size:14px}
.plink .tag{display:inline-block;margin-bottom:10px;font:600 14px var(--font-mono);letter-spacing:.1em;color:var(--link);text-transform:uppercase}
@media(max-width:1000px){.pgrid,.pgrid.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.pgrid,.pgrid.g4,.card-grid,.card-grid.g4,.g4,.card-grid.g2{grid-template-columns:1fr}.stat-grid{grid-template-columns:repeat(2,1fr)}.mstrip{grid-template-columns:1fr;gap:14px}}

/* ---------- footer ---------- */
.site-footer{background:var(--card);border-top:1px solid var(--hair);margin-top:40px}
.site-footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px;padding-top:44px;padding-bottom:34px}
.site-footer h4,.site-footer .fh{font-size:14px;margin-bottom:12px}
.site-footer a{display:block;font-size:14px;color:var(--muted);padding:11px 0}
.site-footer a:hover{color:var(--link)}
.f-brand p{font-size:14px;color:var(--muted);line-height:1.7;margin-top:10px;max-width:30ch}
.f-hit{border-top:1px solid var(--hair);padding:16px 0;display:flex;justify-content:space-between;font-size:14px;color:var(--muted)}
@media(max-width:860px){.site-footer .wrap{grid-template-columns:1fr 1fr;gap:24px}}

/* ---------- misc ---------- */
.note-line{font-size:14px;color:var(--muted);border-top:1px solid var(--hair);padding-top:10px;margin-top:22px;line-height:1.6}
.img-wrap{border-radius:var(--radius);overflow:hidden;margin:14px 0}
.img-wrap img{width:100%;height:auto}
.figure-note{font:italic 14px var(--font-mono);color:var(--muted);margin-top:8px;text-align:center}
.breadcrumb{font-size:14px;color:var(--muted);padding:14px 0 0}
.breadcrumb a{display:inline-block;padding:8px 4px;margin:-8px -4px;min-width:24px;min-height:24px}
.breadcrumb a:hover{color:var(--link)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.grid-flex{display:flex;flex-wrap:wrap;gap:20px}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
@media(max-width:860px){.grid2{grid-template-columns:1fr}}
@media(max-width:640px){:root{--pad:22px;--fs-hero:40px;--fs-h1:32px;--fs-h2:28px;--fs-h3:22px;--fs-body:16px}.hero .sub{font-size:17px}.row{grid-template-columns:54px 1fr 18px}.row .chips{display:none}.tl li{grid-template-columns:78px 1fr}}

/* focus */
:focus-visible{outline:2px solid var(--link);outline-offset:2px}

.tblscroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tblscroll .compare{min-width:520px}

.note-line a{display:inline-block;padding:8px 0;margin:-8px 0;min-height:24px}

.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:860px){.cert-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.cert-grid{grid-template-columns:1fr}}