/* ============================================================
   PDFStamper — UnProton Labs
   Design system: dark default + easy-on-eyes light, 5 themes
   ============================================================ */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{min-height:100%;font-synthesis:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent-soft);color:var(--text)}

/* ---------- Theme tokens ---------- */
:root{
  /* accent hue/chroma/lightness — themes override --accent-h (+ -c) */
  --accent-h:170; --accent-c:0.145; --accent-l:0.82;
  --accent:    oklch(var(--accent-l) var(--accent-c) var(--accent-h));
  --accent-2:  oklch(0.9 var(--accent-c) var(--accent-h));
  --accent-soft:oklch(var(--accent-l) var(--accent-c) var(--accent-h) / 0.16);
  --accent-line:oklch(var(--accent-l) var(--accent-c) var(--accent-h) / 0.42);
  --accent-fg: oklch(0.21 0.05 var(--accent-h));
  --glow:      oklch(var(--accent-l) var(--accent-c) var(--accent-h) / 0.22);

  /* dark surfaces (default) */
  --bg:      oklch(0.155 0.014 248);
  --bg-2:    oklch(0.125 0.014 248);
  --surface: oklch(0.196 0.016 248);
  --surface-2:oklch(0.238 0.018 248);
  --surface-3:oklch(0.285 0.02 248);
  --border:  oklch(1 0 0 / 0.085);
  --border-2:oklch(1 0 0 / 0.14);
  --text:    oklch(0.97 0.004 248);
  --text-dim:oklch(0.745 0.012 248);
  --text-faint:oklch(0.56 0.014 248);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 50px -12px rgba(0,0,0,.7);
  --shadow-sm:0 1px 2px rgba(0,0,0,.35),0 6px 18px -8px rgba(0,0,0,.55);
  --paper:#f4f2ec; --paper-ink:#2c2a26; --paper-faint:#cfcbc1;

  --maxw:1180px;
  --r-sm:9px; --r:14px; --r-lg:22px; --r-xl:30px;
  --glow-amt:1; /* tweakable */

  --sans:"Geist","Geist Fallback",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Geist Mono","SF Mono",ui-monospace,"Cascadia Code",monospace;
}

/* themes */
[data-theme="mint"]   {--accent-h:170;--accent-c:0.145;}
[data-theme="indigo"] {--accent-h:285;--accent-c:0.155;}
[data-theme="amber"]  {--accent-h:84; --accent-c:0.155;}
[data-theme="coral"]  {--accent-h:32; --accent-c:0.16;}
[data-theme="emerald"]{--accent-h:152;--accent-c:0.15;}

/* light mode — warm paper, easy on eyes */
html[data-mode="light"]{
  --accent-l:0.62; --accent-c:0.16;
  --accent-2:  oklch(0.56 var(--accent-c) var(--accent-h));
  --accent-soft:oklch(var(--accent-l) var(--accent-c) var(--accent-h) / 0.12);
  --accent-line:oklch(var(--accent-l) var(--accent-c) var(--accent-h) / 0.5);
  --accent-fg:oklch(0.99 0.01 var(--accent-h));
  --glow:oklch(0.62 var(--accent-c) var(--accent-h) / 0.13);
  --bg:      oklch(0.972 0.006 92);
  --bg-2:    oklch(0.955 0.008 92);
  --surface: oklch(0.995 0.004 92);
  --surface-2:oklch(0.965 0.007 92);
  --surface-3:oklch(0.93 0.009 92);
  --border:  oklch(0.2 0.01 92 / 0.1);
  --border-2:oklch(0.2 0.01 92 / 0.16);
  --text:    oklch(0.26 0.012 260);
  --text-dim:oklch(0.44 0.012 260);
  --text-faint:oklch(0.58 0.012 260);
  --shadow:0 1px 2px rgba(40,38,30,.06),0 22px 48px -16px rgba(40,38,30,.22);
  --shadow-sm:0 1px 2px rgba(40,38,30,.05),0 8px 20px -10px rgba(40,38,30,.18);
}

/* ---------- Base ---------- */
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
  letter-spacing:-0.011em;
}
/* ambient page glow */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(900px 560px at 78% -8%, var(--glow), transparent 60%),
    radial-gradient(760px 520px at 8% 6%, oklch(var(--accent-l) var(--accent-c) var(--accent-h) / .1), transparent 62%);
  opacity:var(--glow-amt);transition:opacity .4s;
}
html[data-mode="light"] body::before{opacity:calc(var(--glow-amt) * .8)}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{position:relative}

/* ---------- Type ---------- */
h1,h2,h3{line-height:1.05;letter-spacing:-0.03em;font-weight:600}
h1{font-size:clamp(2.6rem,6.2vw,4.7rem);font-weight:600}
h2{font-size:clamp(2rem,4vw,3.1rem)}
h3{font-size:1.32rem;letter-spacing:-0.02em}
p{text-wrap:pretty}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:.74rem;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent-line)}
.lead{font-size:clamp(1.06rem,1.7vw,1.28rem);color:var(--text-dim);line-height:1.62;max-width:60ch}
.muted{color:var(--text-dim)}
.faint{color:var(--text-faint)}
.mono{font-family:var(--mono)}
.accent{color:var(--accent)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-weight:560;font-size:.97rem;letter-spacing:-0.01em;cursor:pointer;
  transition:transform .18s cubic-bezier(.3,.7,.4,1),background .18s,box-shadow .25s,border-color .18s;
  white-space:nowrap;background:none;
}
.btn svg{width:18px;height:18px}
.btn-primary{
  background:var(--accent);color:var(--accent-fg);
  box-shadow:0 0 0 1px var(--accent-line),0 8px 26px -8px var(--glow),0 0 30px -6px var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);background:var(--accent-2);
  box-shadow:0 0 0 1px var(--accent-line),0 12px 34px -8px var(--glow),0 0 46px -4px var(--glow)}
.btn-ghost{background:var(--surface-2);color:var(--text);border-color:var(--border-2)}
.btn-ghost:hover{transform:translateY(-2px);background:var(--surface-3);border-color:var(--accent-line)}
.btn-sm{height:40px;padding:0 16px;font-size:.9rem}
.btn-lg{height:54px;padding:0 28px;font-size:1.04rem}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);
  background:color-mix(in oklab,var(--bg) 72%,transparent);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s;
}
.nav.scrolled{border-color:var(--border);background:color-mix(in oklab,var(--bg) 86%,transparent)}
.nav-in{display:flex;align-items:center;gap:22px;height:68px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{padding:8px 13px;border-radius:999px;font-size:.92rem;color:var(--text-dim);font-weight:500;transition:color .15s,background .15s}
.nav-link:hover{color:var(--text);background:var(--surface-2)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{display:none;place-items:center;width:40px;height:40px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--border-2);cursor:pointer;color:var(--text-dim);
  transition:color .15s,background .15s,border-color .15s,transform .15s}
.nav-toggle:hover{color:var(--text);border-color:var(--accent-line);transform:translateY(-1px)}
.nav-toggle svg{width:20px;height:20px}
.nav-toggle .ic-close{display:none}
.nav.open .nav-toggle .ic-burger{display:none}
.nav.open .nav-toggle .ic-close{display:block}
.nav-cta-m{display:none}
.icon-btn{
  display:grid;place-items:center;width:40px;height:40px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--border-2);cursor:pointer;color:var(--text-dim);
  transition:color .15s,background .15s,border-color .15s,transform .15s;
}
.icon-btn:hover{color:var(--text);border-color:var(--accent-line);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}

/* ---------- Brand mark ---------- */
.brand{display:flex;align-items:center;gap:11px;font-weight:600;letter-spacing:-0.02em}
.brand .logo{width:34px;height:34px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(150deg,var(--accent-2),var(--accent));
  display:grid;place-items:center;
  box-shadow:0 0 0 1px var(--accent-line),0 6px 18px -6px var(--glow);}
.brand .logo svg{width:20px;height:20px}
.brand b{font-size:1.06rem;font-weight:600}
.brand .by{font-size:.95rem;color:var(--text-faint);font-weight:500}

/* ---------- Layout helpers ---------- */
.pad{padding:96px 0}
.pad-sm{padding:64px 0}
.center{text-align:center}
.sec-head{max-width:42rem;margin:0 auto 56px}
.sec-head.center{text-align:center}
.sec-head .eyebrow{margin-bottom:18px}
.sec-head h2{margin-bottom:16px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}

/* ---------- Cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px;position:relative;overflow:hidden;transition:border-color .25s,transform .25s,box-shadow .25s;
}
.card:hover{border-color:var(--border-2);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.card .ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent-line);
}
.card .ico svg{width:23px;height:23px}
.card h3{margin-bottom:9px}
.card p{color:var(--text-dim);font-size:.97rem}
.card .tag{position:absolute;top:18px;right:18px;font-family:var(--mono);font-size:.64rem;
  letter-spacing:.1em;text-transform:uppercase;color:var(--text-faint)}

/* reveal */
html.has-js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
html.has-js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html.has-js .reveal{opacity:1;transform:none;transition:none}}

/* ============================================================
   HERO
   ============================================================ */
.hero{padding:62px 0 86px;position:relative}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.hero-copy .eyebrow{margin-bottom:22px}
.hero-copy h1{margin-bottom:22px}
.hero-copy h1 .hl{position:relative;white-space:nowrap;color:var(--accent)}
.hero-copy .lead{margin-bottom:30px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.hero-trust{display:flex;align-items:center;gap:14px;color:var(--text-faint);font-size:.88rem;flex-wrap:wrap}
.stars{color:var(--accent);letter-spacing:2px}
.dot{width:3px;height:3px;border-radius:50%;background:var(--text-faint)}

/* chips strip */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
.chip{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--border);font-size:.84rem;color:var(--text-dim);font-weight:500}
.chip svg{width:14px;height:14px;color:var(--accent)}

/* ============================================================
   HERO DEMO (mini app)
   ============================================================ */
.demo{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  background:linear-gradient(170deg,var(--surface-2),var(--surface));
  border:1px solid var(--border-2);
  box-shadow:0 0 0 1px var(--accent-line),var(--shadow),0 0 90px -30px var(--glow);
}
.demo-bar{display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-bottom:1px solid var(--border);
  background:color-mix(in oklab,var(--surface) 70%,transparent)}
.demo-bar .tl{display:flex;gap:7px}
.demo-bar .tl i{width:11px;height:11px;border-radius:50%;background:var(--surface-3)}
.demo-bar .ttl{margin-left:6px;font-family:var(--mono);font-size:.72rem;color:var(--text-faint);letter-spacing:.04em}
.demo-bar .live{margin-left:auto;display:flex;align-items:center;gap:7px;font-family:var(--mono);font-size:.66rem;
  color:var(--accent);letter-spacing:.1em;text-transform:uppercase}
.demo-bar .live i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.demo-body{display:grid;grid-template-columns:138px 1fr;height:430px;position:relative}

/* tool rail */
.rail{border-right:1px solid var(--border);padding:14px 12px;display:flex;flex-direction:column;gap:8px;
  background:color-mix(in oklab,var(--surface) 55%,transparent)}
.rail-h{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint);margin:2px 0 2px 4px}
.tool{display:flex;align-items:center;gap:9px;height:34px;padding:0 9px;border-radius:9px;font-size:.8rem;font-weight:500;
  color:var(--text-dim);border:1px solid transparent;cursor:default;transition:background .15s,color .15s,border-color .15s;position:relative}
.tool svg{width:15px;height:15px;flex-shrink:0;color:var(--text-faint);transition:color .15s}
.tool.hot{background:var(--accent-soft);color:var(--text);border-color:var(--accent-line)}
.tool.hot svg{color:var(--accent)}
.rail .spacer{flex:1}
.save-btn{margin-top:6px;display:flex;align-items:center;justify-content:center;gap:8px;height:40px;border-radius:10px;
  background:var(--accent);color:var(--accent-fg);font-weight:600;font-size:.82rem;cursor:default;
  box-shadow:0 6px 18px -8px var(--glow);transition:transform .12s,filter .12s}
.save-btn svg{width:15px;height:15px}
.save-btn.press{transform:scale(.95);filter:brightness(1.08)}

/* document stage */
.stage{position:relative;overflow:hidden;background:
  repeating-linear-gradient(45deg,transparent,transparent 11px,oklch(1 0 0 /.012) 11px,oklch(1 0 0 /.012) 12px),
  var(--bg-2);display:grid;place-items:center;padding:22px}
html[data-mode="light"] .stage{background:
  repeating-linear-gradient(45deg,transparent,transparent 11px,oklch(0.2 0.01 92 /.025) 11px,oklch(0.2 0.01 92 /.025) 12px),
  var(--bg-2)}
.paper{position:relative;width:268px;height:356px;background:var(--paper);border-radius:5px;
  box-shadow:0 1px 0 rgba(255,255,255,.4) inset,0 20px 50px -18px rgba(0,0,0,.6);
  padding:24px 22px;overflow:hidden;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.paper .doc-h{font-size:11px;font-weight:700;color:var(--paper-ink);margin-bottom:3px;letter-spacing:-0.01em}
.paper .doc-sub{font-size:6.5px;color:#8a857a;margin-bottom:12px;font-family:var(--mono)}
.paper .ln{height:4px;border-radius:2px;background:var(--paper-faint);margin-bottom:6px}
.paper .ln.s{width:70%}.paper .ln.m{width:88%}.paper .ln.l{width:97%}
.paper .gap{height:8px}

/* baked sweep */
.paper .bake{position:absolute;inset:0;pointer-events:none;opacity:0;
  background:linear-gradient(105deg,transparent 35%,var(--accent-soft) 48%,oklch(var(--accent-l) var(--accent-c) var(--accent-h)/.5) 50%,var(--accent-soft) 52%,transparent 65%);
  transform:translateX(-120%)}
.paper.baking .bake{opacity:1;animation:sweep 1s cubic-bezier(.5,0,.3,1) forwards}
@keyframes sweep{to{transform:translateX(120%)}}
.paper.saved{transform:scale(.985)}

/* stamps */
.stamp{position:absolute;opacity:0;transform:scale(.6) rotate(var(--rot,0deg));transform-origin:center;
  transition:opacity .35s,transform .45s cubic-bezier(.34,1.56,.45,1),left .5s cubic-bezier(.3,.7,.3,1),top .5s cubic-bezier(.3,.7,.3,1);
  will-change:transform,left,top;touch-action:none}
.stamp.show{opacity:1;transform:scale(1) rotate(var(--rot,0deg))}
.stamp.drag{cursor:grab;pointer-events:auto}
.stamp.drag:active{cursor:grabbing}
.stamp.grabbed{transition:none;filter:drop-shadow(0 8px 14px rgba(0,0,0,.35))}

.st-approved{padding:5px 13px;border:2.5px solid var(--accent);border-radius:5px;
  color:var(--accent);font-weight:800;font-size:15px;letter-spacing:1.5px;
  box-shadow:inset 0 0 0 1.5px var(--accent-soft);background:oklch(var(--accent-l) var(--accent-c) var(--accent-h)/.06);
  text-transform:uppercase}
.st-date{font-family:var(--mono);font-size:8px;font-weight:600;color:#b04b3a;border:1.5px solid #b04b3a;
  border-radius:3px;padding:3px 6px;letter-spacing:.5px;background:rgba(176,75,58,.06)}
.st-qr{width:46px;height:46px;background:#fff;border-radius:4px;padding:4px;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.st-qr svg{width:100%;height:100%}
.st-sign{color:#1f3a8a}
.st-sign svg{width:78px;height:34px;overflow:visible}
.st-sign .pen{fill:none;stroke:#1f3a8a;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:240;stroke-dashoffset:240}
.stamp.show .st-sign .pen{animation:draw 1s ease forwards .1s}
@keyframes draw{to{stroke-dashoffset:0}}
.st-sign .base{stroke:#1f3a8a;stroke-width:1;opacity:.5}
.st-sign .lbl{font-family:var(--mono);font-size:5.5px;fill:#1f3a8a;letter-spacing:.5px}

/* selection + handles */
.stamp.sel::after{content:"";position:absolute;inset:-7px;border:1.5px solid var(--accent);border-radius:4px;
  box-shadow:0 0 0 3px var(--accent-soft)}
.stamp.sel .h{position:absolute;width:7px;height:7px;background:var(--accent);border:1.5px solid #fff;border-radius:1px;z-index:2}
.stamp .h{display:none}
.stamp.sel .h{display:block}
.h.tl{top:-10px;left:-10px}.h.tr{top:-10px;right:-10px}.h.bl{bottom:-10px;left:-10px}.h.br{bottom:-10px;right:-10px}

/* synthetic cursor */
.cursor{position:absolute;width:22px;height:22px;z-index:30;left:0;top:0;pointer-events:none;
  transition:transform .7s cubic-bezier(.5,0,.2,1),opacity .3s;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5))}
/* pulse centered on the arrow tip (4.6,2.8 inside the 22px svg) */
.cursor.click::after{content:"";position:absolute;left:-10px;top:-12px;width:30px;height:30px;border-radius:50%;
  border:2px solid var(--accent);animation:ring .5s ease-out}
@keyframes ring{from{transform:scale(.2);opacity:.9}to{transform:scale(1.3);opacity:0}}

/* snap guides */
.guide{position:absolute;background:var(--accent);opacity:0;pointer-events:none;z-index:5;
  box-shadow:0 0 8px var(--accent)}
.guide.v{width:1px;top:0;bottom:0}.guide.h{height:1px;left:0;right:0}
.guide.on{opacity:.7}

/* status / filename chip */
.demo-status{position:absolute;left:50%;bottom:16px;transform:translateX(-50%) translateY(8px);
  display:flex;align-items:center;gap:9px;height:34px;padding:0 15px;border-radius:999px;z-index:20;
  background:color-mix(in oklab,var(--surface) 86%,transparent);border:1px solid var(--border-2);
  backdrop-filter:blur(10px);font-size:.78rem;color:var(--text-dim);font-weight:500;
  opacity:0;transition:opacity .35s,transform .35s;white-space:nowrap;box-shadow:var(--shadow-sm)}
.demo-status.show{opacity:1;transform:translateX(-50%) translateY(0)}
.demo-status .fname{font-family:var(--mono);font-size:.72rem;color:var(--text)}
.demo-status .ok{display:grid;place-items:center;width:18px;height:18px;border-radius:50%;background:var(--accent);color:var(--accent-fg)}
.demo-status .ok svg{width:11px;height:11px}

.demo-hint{position:absolute;left:50%;top:14px;transform:translateX(-50%);z-index:25;
  font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;color:var(--accent);
  background:var(--accent-soft);border:1px solid var(--accent-line);padding:5px 11px;border-radius:999px;
  opacity:0;transition:opacity .3s;pointer-events:none}
.demo.interactive .demo-hint{opacity:1}

/* ============================================================
   How it works
   ============================================================ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{position:relative;padding:30px 26px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--border)}
.step .num{font-family:var(--mono);font-size:.82rem;color:var(--accent);letter-spacing:.1em;margin-bottom:46px;display:block}
.step h3{margin-bottom:8px}
.step p{color:var(--text-dim);font-size:.95rem}
.step .si{position:absolute;top:26px;right:26px;width:30px;height:30px;color:var(--accent);opacity:.5}
.step:not(:last-child)::after{content:"";position:absolute;top:50%;right:-15px;width:14px;height:1px;background:var(--border-2);z-index:1}

/* ============================================================
   Features grid
   ============================================================ */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  grid-template-areas:
    "spec spec b"
    "spec spec c"
    "d    e    f";}
.features>.card:nth-child(1){grid-area:spec}
.features>.card:nth-child(2){grid-area:b}
.features>.card:nth-child(3){grid-area:c}
.features>.card:nth-child(4){grid-area:d}
.features>.card:nth-child(5){grid-area:e}
.features>.card:nth-child(6){grid-area:f}
/* the big specimen card distributes its content top + sheet */
.features>.card:nth-child(1){display:flex;flex-direction:column}
.features>.card:nth-child(1) .stamp-sheet{margin-top:auto}
.f-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.f-list span{font-family:var(--mono);font-size:.7rem;color:var(--text-dim);background:var(--surface-2);
  border:1px solid var(--border);padding:4px 9px;border-radius:6px}

/* ---- Stamp specimen sheet (the "Six kinds of stamp" feature card) ---- */
.stamp-sheet{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.specimen{display:flex;flex-direction:column;gap:9px;min-width:0}
.sp-art{position:relative;height:88px;border-radius:10px;overflow:hidden;display:grid;place-items:center;
  background:var(--paper);
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.06),inset 0 1px 0 rgba(255,255,255,.55),0 1px 2px rgba(0,0,0,.18);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s}
/* faint document ruling behind each specimen */
.sp-art::before{content:"";position:absolute;inset:13px 14px;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(transparent,transparent 6px,var(--paper-faint) 6px,var(--paper-faint) 7px)}
.sp-art>*{position:relative;z-index:1}
.card:hover .sp-art{transform:translateY(-3px);box-shadow:inset 0 0 0 1px rgba(0,0,0,.06),inset 0 1px 0 rgba(255,255,255,.55),0 8px 18px -8px rgba(0,0,0,.4)}
.specimen figcaption{font-family:var(--mono);font-size:.68rem;letter-spacing:.03em;color:var(--text-dim);text-align:center}

.sp-approved{font-weight:800;font-size:.72rem;letter-spacing:1px;text-transform:uppercase;color:var(--accent);
  border:2px solid var(--accent);border-radius:4px;padding:3px 8px;transform:rotate(-7deg);
  background:color-mix(in oklab,var(--accent) 9%,transparent);box-shadow:inset 0 0 0 1px var(--accent-soft)}
.sp-image{width:42px;height:31px;border-radius:5px;display:grid;place-items:center;transform:rotate(4deg);
  background:color-mix(in oklab,var(--accent) 16%,#fff);border:1.5px solid var(--accent-line)}
.sp-image svg{width:19px;height:19px;color:var(--accent-fg);opacity:.9}
.sp-qr{width:40px;height:40px;background:#fff;border-radius:4px;padding:3px;transform:rotate(-3deg);box-shadow:0 1px 5px rgba(0,0,0,.2)}
.sp-qr svg{width:100%;height:100%}
.sp-sign{transform:rotate(-3deg)}
.sp-sign svg{width:64px;height:30px;overflow:visible}
.sp-date{font-family:var(--mono);font-size:.6rem;font-weight:600;color:#b04b3a;border:1.5px solid #b04b3a;
  border-radius:3px;padding:3px 6px;letter-spacing:.4px;background:rgba(176,75,58,.07);transform:rotate(3deg);white-space:nowrap}
.sp-wm{font-weight:800;font-size:1.05rem;letter-spacing:3px;text-transform:uppercase;transform:rotate(-19deg);
  color:color-mix(in oklab,var(--paper-ink) 24%,transparent)}
@media (max-width:620px){.stamp-sheet{grid-template-columns:repeat(2,1fr)}}

/* stamp gallery (templates spotlight) */
.gallery{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:8px}
.g-stamp{font-weight:800;letter-spacing:1.5px;text-transform:uppercase;font-size:1.05rem;padding:8px 18px;
  border:3px solid;border-radius:6px;transform:rotate(-7deg);opacity:.94;
  box-shadow:inset 0 0 0 1.5px currentColor;background:color-mix(in oklab,currentColor 8%,transparent)}
.g-stamp:nth-child(even){transform:rotate(5deg)}
.g-approved{color:#2faa6a;border-color:currentColor}
.g-rejected{color:#d2453d}
.g-confidential{color:#e08a2b;font-size:.92rem}
.g-draft{color:#3b7bd0}
.g-copy{color:#8d5bd6}
.g-paid{color:#1f9c8a}

/* spotlight (privacy) */
.spot{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:48px;overflow:hidden;position:relative}
.spot::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 300px at 100% 0%,var(--glow),transparent 70%);opacity:.6}
.spot>*{position:relative}
.spot h2{margin-bottom:16px}
.spot .lead{margin-bottom:24px}
.spot ul{list-style:none;display:flex;flex-direction:column;gap:13px}
.spot li{display:flex;gap:12px;align-items:flex-start;color:var(--text-dim)}
.spot li svg{width:20px;height:20px;color:var(--accent);flex-shrink:0;margin-top:2px}
.spot li b{color:var(--text);font-weight:560}

/* privacy diagram */
.flow{display:flex;flex-direction:column;gap:14px;align-items:center}
.flow .box{width:100%;max-width:300px;text-align:center;padding:20px;border-radius:var(--r);border:1px solid var(--border-2);
  background:var(--surface-2);position:relative}
.flow .box .bi{width:40px;height:40px;margin:0 auto 10px;display:grid;place-items:center;border-radius:11px;
  background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent-line)}
.flow .box .bi svg{width:22px;height:22px}
.flow .box h4{font-size:.98rem;margin-bottom:3px}
.flow .box p{font-size:.82rem;color:var(--text-faint)}
.flow .arr{color:var(--accent);height:22px}
.flow .device{border-color:var(--accent-line);box-shadow:0 0 0 1px var(--accent-line),0 0 40px -12px var(--glow)}
.flow .blocked{opacity:.5}
.flow .blocked .bi{background:var(--surface-3);color:var(--text-faint);border-color:var(--border-2)}
.flow .xline{position:relative}
.flow .xline::after{content:"NO UPLOAD";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-8deg);
  font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;color:#d2453d;border:1.5px solid #d2453d;
  padding:2px 8px;border-radius:4px;background:var(--surface)}

/* ============================================================
   FAQ
   ============================================================ */
.faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.q{border:1px solid var(--border);border-radius:var(--r);background:var(--surface);overflow:hidden;transition:border-color .2s}
.q[open]{border-color:var(--accent-line)}
.q summary{list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;gap:14px;font-weight:560;font-size:1.02rem}
.q summary::-webkit-details-marker{display:none}
.q summary .pm{margin-left:auto;width:20px;height:20px;color:var(--accent);transition:transform .25s;flex-shrink:0}
.q[open] summary .pm{transform:rotate(45deg)}
.q .a{padding:0 22px 22px;color:var(--text-dim);font-size:.97rem;line-height:1.65}

/* ============================================================
   CTA band
   ============================================================ */
.cta-band{position:relative;border-radius:var(--r-xl);overflow:hidden;text-align:center;padding:70px 32px;
  background:linear-gradient(160deg,var(--surface-2),var(--surface));border:1px solid var(--border-2)}
.cta-band::before{content:"";position:absolute;inset:0;
  background:radial-gradient(600px 320px at 50% -20%,var(--glow),transparent 65%)}
.cta-band>*{position:relative}
.cta-band h2{margin-bottom:14px}
.cta-band p{color:var(--text-dim);margin:0 auto 28px;max-width:46ch}
.cta-band .hero-cta{justify-content:center}

/* ============================================================
   Footer
   ============================================================ */
.footer{border-top:1px solid var(--border);padding:62px 0 40px;margin-top:30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:44px}
.foot-grid .col h5{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:16px;font-weight:500}
.foot-grid .col a{display:block;color:var(--text-dim);font-size:.92rem;padding:5px 0;transition:color .15s}
.foot-grid .col a:hover{color:var(--accent)}
.foot-about{max-width:30ch;color:var(--text-dim);font-size:.92rem;margin-top:14px}
.foot-bot{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding-top:26px;border-top:1px solid var(--border);font-size:.84rem;color:var(--text-faint)}
.foot-bot .mono{font-family:var(--mono)}

/* ============================================================
   Legal / prose pages
   ============================================================ */
.legal-hero{padding:54px 0 36px;border-bottom:1px solid var(--border)}
.legal-hero .eyebrow{margin-bottom:16px}
.legal-hero h1{font-size:clamp(2.2rem,4.5vw,3.2rem);margin-bottom:14px}
.legal-hero .meta{color:var(--text-faint);font-family:var(--mono);font-size:.82rem}
.legal-layout{display:grid;grid-template-columns:230px 1fr;gap:54px;padding:54px 0 90px;align-items:start}
.toc{position:sticky;top:90px;display:flex;flex-direction:column;gap:3px}
.toc-h{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint);margin-bottom:10px}
.toc a{font-size:.86rem;color:var(--text-dim);padding:6px 11px;border-radius:8px;border-left:2px solid transparent;transition:.15s}
.toc a:hover{color:var(--text);background:var(--surface-2)}
.toc a.active{color:var(--accent);border-left-color:var(--accent);background:var(--accent-soft)}
.prose{max-width:72ch}
.prose h2{font-size:1.5rem;margin:46px 0 14px;scroll-margin-top:90px;letter-spacing:-0.02em}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.1rem;margin:26px 0 8px}
.prose p{color:var(--text-dim);margin-bottom:14px;font-size:1rem}
.prose ul,.prose ol{color:var(--text-dim);margin:0 0 16px 22px;display:flex;flex-direction:column;gap:8px}
.prose li{padding-left:4px}
.prose strong{color:var(--text);font-weight:600}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--accent-line)}
.prose .callout{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--accent);
  border-radius:var(--r);padding:18px 20px;margin:18px 0;color:var(--text-dim)}
.prose .callout strong{color:var(--accent)}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.92rem}
.prose th,.prose td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--border);color:var(--text-dim)}
.prose th{color:var(--text);font-weight:600;font-family:var(--mono);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}

/* about */
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:10px}
.principle{padding:28px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--border)}
.principle .pn{font-family:var(--mono);color:var(--accent);font-size:.9rem;margin-bottom:18px}
.principle h3{font-size:1.12rem;margin-bottom:8px}
.principle p{color:var(--text-dim);font-size:.94rem}
.tools-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:10px}
.tool-card{padding:26px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--border);position:relative}
.tool-card .badge{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-line);padding:3px 8px;border-radius:5px;display:inline-block;margin-bottom:14px}
.tool-card h3{margin-bottom:8px}
.tool-card p{color:var(--text-dim);font-size:.93rem;margin-bottom:14px}
.tool-card .lk{color:var(--accent);font-size:.86rem;font-weight:560}

/* ---------- Tweaks panel (vanilla) ---------- */
.tw{position:fixed;right:18px;bottom:18px;z-index:2147483646;width:272px;
  background:color-mix(in oklab,var(--surface) 90%,transparent);
  backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%);
  border:1px solid var(--border-2);border-radius:16px;box-shadow:var(--shadow);
  color:var(--text);font-size:12px;display:none;overflow:hidden}
.tw.open{display:block}
.tw-hd{display:flex;align-items:center;justify-content:space-between;padding:13px 12px 13px 16px;cursor:move;
  border-bottom:1px solid var(--border)}
.tw-hd b{font-size:12.5px;font-weight:600;letter-spacing:.02em}
.tw-hd .x{width:24px;height:24px;border-radius:7px;border:0;background:transparent;color:var(--text-faint);cursor:pointer;font-size:14px}
.tw-hd .x:hover{background:var(--surface-3);color:var(--text)}
.tw-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:13px;max-height:70vh;overflow-y:auto}
.tw-sect{font-family:var(--mono);font-size:9.5px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;color:var(--text-faint)}
.tw-row{display:flex;flex-direction:column;gap:8px}
.tw-lbl{display:flex;justify-content:space-between;color:var(--text-dim);font-weight:500}
.tw-lbl .v{color:var(--text-faint);font-family:var(--mono)}
.tw-chips{display:flex;gap:8px}
.tw-chip{flex:1;height:40px;border-radius:9px;border:1px solid var(--border-2);cursor:pointer;position:relative;
  transition:transform .12s,box-shadow .12s}
.tw-chip:hover{transform:translateY(-2px)}
.tw-chip[data-on="1"]{box-shadow:0 0 0 2px var(--text),0 0 0 4px var(--surface)}
.tw-chip .ck{position:absolute;inset:0;display:none;place-items:center;color:#fff;filter:drop-shadow(0 1px 2px rgba(0,0,0,.6))}
.tw-chip[data-on="1"] .ck{display:grid}
.tw-seg{display:flex;padding:3px;border-radius:9px;background:var(--surface-3);position:relative;gap:2px}
.tw-seg button{flex:1;border:0;background:transparent;color:var(--text-dim);font:inherit;font-weight:500;
  height:28px;border-radius:7px;cursor:pointer;z-index:1;transition:color .15s}
.tw-seg button[data-on="1"]{color:var(--text);background:var(--surface);box-shadow:var(--shadow-sm)}
.tw-slider{appearance:none;-webkit-appearance:none;width:100%;height:4px;border-radius:99px;background:var(--surface-3);outline:none}
.tw-slider::-webkit-slider-thumb{-webkit-appearance:none;width:15px;height:15px;border-radius:50%;background:var(--accent);
  cursor:pointer;box-shadow:0 0 0 1px var(--accent-line)}
.tw-slider::-moz-range-thumb{width:15px;height:15px;border:0;border-radius:50%;background:var(--accent);cursor:pointer}
.tw-toggle{position:relative;width:36px;height:20px;border:0;border-radius:99px;background:var(--surface-3);cursor:pointer;flex-shrink:0}
.tw-toggle[data-on="1"]{background:var(--accent)}
.tw-toggle i{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .16s}
.tw-toggle[data-on="1"] i{transform:translateX(16px)}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:940px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:40px 0 60px}
  .features{grid-template-columns:1fr 1fr;
    grid-template-areas:
      "spec spec"
      "b    c"
      "d    e"
      "f    f";}
  .steps{grid-template-columns:1fr}
  .step:not(:last-child)::after{display:none}
  .spot{grid-template-columns:1fr;gap:34px;padding:34px}
  .principles,.tools-row{grid-template-columns:1fr}
  .legal-layout{grid-template-columns:1fr;gap:24px}
  .toc{position:static;flex-direction:row;flex-wrap:wrap;gap:6px;padding-bottom:18px;border-bottom:1px solid var(--border)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .wrap{padding:0 18px}
  .pad{padding:64px 0}
  .features{grid-template-columns:1fr;
    grid-template-areas:"spec" "b" "c" "d" "e" "f";}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .demo-body{grid-template-columns:104px 1fr;height:380px}
  .tool span{display:none}
  .hero-cta .btn{flex:1}
}

/* ---- Mobile nav: collapse links into a hamburger menu ---- */
@media (max-width:880px){
  .nav-toggle{display:grid}
  .nav-cta-d{display:none}                 /* hide the top-bar CTA button */
  .nav-actions{margin-left:auto;gap:8px}   /* brand left · actions right */
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    padding:12px 18px calc(16px + env(safe-area-inset-bottom));
    background:color-mix(in oklab,var(--bg) 93%,transparent);
    backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);
    border-bottom:1px solid var(--border);box-shadow:var(--shadow);
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
  }
  .nav.open .nav-links{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav-link{padding:13px 14px;border-radius:11px;font-size:1.02rem}
  .nav-cta-m{display:flex;align-items:center;justify-content:center;margin-top:8px;height:48px;
    background:var(--accent);color:var(--accent-fg);font-weight:600;
    box-shadow:0 0 0 1px var(--accent-line),0 8px 26px -8px var(--glow)}
  .nav-cta-m:hover{background:var(--accent-2);color:var(--accent-fg)}
}