/* Layout: single column story — thesis + live before/after, proof, steps, privacy, pricing, FAQ. Graphite ink on paper; highlighter yellow is the one loud color. */
:root{
  --paper:#f6f6f2; --sheet:#ffffff; --ink:#1f2a33; --muted:#5b6872; --line:#d9ddd8; --accent:#2f5d73; --hl:#efd94a; --good:#2e7d55;
  --shadow:0 1px 2px rgba(20,30,40,.1),0 10px 30px rgba(20,30,40,.08);
  --f-display:"Newsreader",Georgia,serif; --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif; --f-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--paper:#13181c;--sheet:#1b2228;--ink:#e6e9e6;--muted:#97a3ab;--line:#2c353c;--accent:#86b9cf;--hl:#d9c53f;--good:#6cc495;--shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px rgba(0,0,0,.3);color-scheme:dark}}
:root[data-theme="dark"]{--paper:#13181c;--sheet:#1b2228;--ink:#e6e9e6;--muted:#97a3ab;--line:#2c353c;--accent:#86b9cf;--hl:#d9c53f;--good:#6cc495;--shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px rgba(0,0,0,.3);color-scheme:dark}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
button,a,input,summary{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
a{color:inherit}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:1120px;margin:0 auto;padding-inline:20px}
section{padding-block:72px}
h1,h2,h3{font-family:var(--f-display);font-weight:600;line-height:1.08;letter-spacing:-.015em;text-wrap:balance;margin:0}
h1{font-size:clamp(2.6rem,6.2vw,4.6rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem)}
h3{font-size:1.3rem;line-height:1.2}
p{margin:0}
.lede{font-size:1.15rem;color:var(--muted);max-width:52ch}
.eyebrow{font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.mark{background:linear-gradient(transparent 52%,var(--hl) 52%,var(--hl) 92%,transparent 92%);padding:0 .08em;color:inherit}
:root[data-theme="dark"] .mark,:root:not([data-theme="light"]) .mark{color:inherit}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:10px;border:1px solid var(--line);background:var(--sheet);font-weight:600;text-decoration:none;transition:transform .12s,border-color .12s}
.btn:hover{border-color:var(--muted)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn.primary:hover{transform:translateY(-1px)}
svg.i{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:60px}
.logo{display:flex;align-items:center;gap:10px;min-height:44px;font:600 1.35rem var(--f-display);text-decoration:none}
.logo b{font-weight:600;color:var(--accent)}
.logo img{width:30px;height:30px;border-radius:7px;display:block}
.skip{position:absolute;left:-999px;top:8px;z-index:200;background:var(--ink);color:var(--paper);padding:8px 12px;border-radius:8px}
.skip:focus{left:12px}
.nav .signin{white-space:nowrap;font-weight:500;color:var(--muted);text-decoration:none;font-size:15px;background:none;border:0;padding:8px;min-height:44px;display:inline-flex;align-items:center}
@media (max-width:340px){.nav .logo span{display:none}.nav .logo{min-width:44px}}
@media (max-width:360px){.nav .wrap{gap:8px}.nav .btn{padding:9px 10px;font-size:13px}.nav .signin{padding:8px 4px;font-size:14px}.logo span{font-size:1.15rem}}
.nav .signin:hover{color:var(--ink)}
.logo i{width:30px;height:30px;border-radius:7px;background:var(--ink);position:relative;display:block}
.logo i::before{content:"";position:absolute;left:8px;top:6px;width:14px;height:18px;background:var(--paper);border-radius:2px}
.logo i::after{content:"";position:absolute;left:10px;top:13px;width:10px;height:3px;background:var(--hl)}
.nav-links{display:flex;gap:22px;margin-left:auto;font-size:15px;color:var(--muted)}
.nav-links a{text-decoration:none;padding:10px 6px}
.nav-links a:hover{color:var(--ink)}
.nav .btn{padding:9px 14px;font-size:14px;min-height:44px}
/* hero */
.hero{padding-block:56px 72px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.hero-copy{display:grid;gap:22px;min-width:0}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.reassure{font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 16px}
.reassure span::before{content:"✓ ";color:var(--good);font-weight:600}
/* before/after */
.ba{position:relative;aspect-ratio:4/5;max-width:100%;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);user-select:none;touch-action:pan-y;background:#222}
.ba picture{position:absolute;inset:0}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.ba .after,.ba picture:nth-of-type(2){clip-path:inset(0 0 0 var(--cut,50%))}
.ba .handle{position:absolute;top:0;bottom:0;left:var(--cut,50%);width:2px;background:var(--hl);transform:translateX(-1px)}
.ba .knob{position:absolute;top:50%;left:50%;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--hl);color:#1f2a33;display:grid;place-items:center;box-shadow:0 2px 10px rgba(0,0,0,.35);cursor:ew-resize;border:0}
.ba .tag{position:absolute;top:14px;font:500 12px/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;padding:6px 8px;border-radius:6px;background:rgba(20,26,30,.78);color:#fff}
.ba .tag.l{left:14px}.ba .tag.r{right:14px;background:var(--hl);color:#1f2a33}
.ba-cap{margin-top:12px;font-size:13px;color:var(--muted);font-family:var(--f-mono)}
.ba-range{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
/* pains */
.pains{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--sheet)}
.pains .wrap{display:grid;gap:32px}
.pain-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.pain{background:var(--sheet);padding:24px;display:grid;gap:10px;align-content:start;min-width:0}
.pain q{quotes:none;font:italic 500 1.25rem/1.3 var(--f-display)}
.pain p{color:var(--muted);font-size:15px}
.pain b{color:var(--ink);font-weight:600}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:40px}
.step{display:grid;gap:12px;align-content:start;min-width:0}
.step .n{font:500 13px var(--f-mono);color:var(--accent)}
.step p{color:var(--muted)}
.head{display:grid;gap:14px;max-width:720px}
/* features */
.feat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px}
@media (max-width:860px){.feat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:540px){.feat-grid{grid-template-columns:1fr}}
.feat{display:grid;gap:8px;align-content:start;padding:22px;border-radius:12px;background:var(--sheet);border:1px solid var(--line);min-width:0}
.feat p{color:var(--muted);font-size:15px}
.feat .ico{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent)}
/* privacy */
.privacy{background:var(--ink);color:var(--paper)}
.privacy .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
.privacy .lede{color:color-mix(in srgb,var(--paper) 72%,transparent)}
.privacy .eyebrow{color:color-mix(in srgb,var(--paper) 60%,transparent)}
.ledger{font:14px/1.5 var(--f-mono);display:grid;gap:0;border:1px solid color-mix(in srgb,var(--paper) 22%,transparent);border-radius:12px;overflow:hidden}
.ledger div{display:flex;justify-content:space-between;gap:16px;padding:12px 16px;border-top:1px solid color-mix(in srgb,var(--paper) 14%,transparent)}
.ledger div:first-child{border-top:0}
.ledger .on{color:var(--hl)}
/* compare */
.tbl-wrap{overflow-x:auto;margin-top:36px;border:1px solid var(--line);border-radius:12px;background:var(--sheet)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px}
th,td{padding:14px 18px;text-align:left;border-top:1px solid var(--line)}
thead th{border-top:0;font:500 12px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
td.y{color:var(--good);font-weight:600}
td.n{color:var(--muted)}
th.us,td.us{background:color-mix(in srgb,var(--hl) 14%,transparent)}
/* pricing */
.pricing .wrap{display:grid;gap:36px;justify-items:center;text-align:center}
.toggle{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:4px;background:var(--sheet)}
.toggle button{border:0;background:none;min-height:40px;padding:8px 16px;border-radius:999px;font-weight:500;color:var(--muted)}
.toggle button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.save{font:500 12px var(--f-mono);background:var(--hl);color:#1f2a33;padding:2px 6px;border-radius:4px;margin-left:6px}
.plan{width:min(440px,100%);text-align:left;background:var(--sheet);border:1px solid var(--line);border-radius:16px;padding:28px;display:grid;gap:18px;box-shadow:var(--shadow)}
.price{display:flex;align-items:baseline;gap:8px;font-variant-numeric:tabular-nums}
.price b{font:600 3rem/1 var(--f-display)}
.price span{color:var(--muted)}
.plan ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.plan li{display:flex;gap:10px;font-size:15px}
.plan li::before{content:"✓";color:var(--good);font-weight:700}
.plan .fine{font-size:13px;color:var(--muted)}
/* faq */
.faq{display:grid;gap:0;max-width:760px;margin-top:32px;border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line);padding:8px 0}
details p{padding-bottom:10px}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:44px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font:500 1.3rem/1 var(--f-mono);color:var(--muted)}
details[open] summary::after{content:"–"}
details p{margin-top:10px;color:var(--muted);max-width:62ch}
.final{text-align:center}
.final .wrap{display:grid;gap:20px;justify-items:center}
footer{border-top:1px solid var(--line);padding-block:28px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px 32px;justify-content:space-between;align-items:flex-start}
.foot-brand{display:grid;gap:6px}
.foot-brand .logo{font-size:1.1rem}
footer nav{display:flex;gap:10px 18px;flex-wrap:wrap}
footer nav a{text-decoration:none;display:inline-block;padding:10px 4px}
footer nav a:hover{color:var(--ink);text-decoration:underline}
/* ---------- onboarding sheet ---------- */
.ob{position:fixed;inset:0;z-index:100;background:var(--paper);display:flex;flex-direction:column;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
.ob-top{display:flex;align-items:center;gap:14px;padding:14px 20px;border-bottom:1px solid var(--line)}
.ob-prog{flex:1;height:4px;background:var(--line);border-radius:2px;overflow:hidden}
.ob-prog i{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}
.ob-step{font:12px var(--f-mono);color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.ob-x{border:0;background:none;width:44px;height:44px;border-radius:8px;display:grid;place-items:center;color:var(--muted)}
.ob-body{flex:1;overflow:auto;padding:36px 20px 24px}
.ob-in{max-width:640px;margin:0 auto;display:grid;gap:22px}
.ob-in h2{font-size:clamp(1.7rem,4vw,2.4rem)}
.ob-hint{color:var(--muted)}
.opts{display:grid;gap:10px}
.opt{display:flex;align-items:center;gap:14px;text-align:left;padding:14px 16px;border:1.5px solid var(--line);border-radius:12px;background:var(--sheet);font-size:16px;transition:border-color .12s,background .12s}
.opt:hover{border-color:var(--muted)}
.opt[aria-pressed="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,var(--sheet))}
.opt .box{width:22px;height:22px;border-radius:6px;border:1.5px solid var(--line);flex:none;display:grid;place-items:center;font-size:13px;color:transparent}
.opt.radio .box{border-radius:50%}
.opt[aria-pressed="true"] .box{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.opt small{display:block;color:var(--muted);font-size:13px;margin-top:2px}
.ob-foot{border-top:1px solid var(--line);padding:14px 20px calc(14px + env(safe-area-inset-bottom,0px))}
.ob-foot .ob-in{display:flex;justify-content:space-between;gap:12px;align-items:center}
#obBack{min-width:56px}
.ob-foot .btn[disabled]{opacity:.4;pointer-events:none}
.link{border:0;background:none;color:var(--muted);text-decoration:underline;text-underline-offset:3px;padding:8px 0;min-height:44px}
.ob-hint .link,.legal .link{min-height:0;padding:0}
.fix{display:grid;gap:12px}
.fix-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;padding:16px;border-radius:12px;background:var(--sheet);border:1px solid var(--line)}
.fix-card .ico{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:color-mix(in srgb,var(--hl) 40%,transparent);color:var(--ink)}
.fix-card .pain-q{font:italic 500 1.05rem/1.3 var(--f-display);color:var(--muted)}
.fix-card p{font-size:15px}
.rec{padding:16px 18px;border-radius:12px;border:1px dashed var(--accent);font-size:15px}
.rec b{font-weight:600}
.signin{display:grid;gap:14px}
.field{font:inherit;font-size:16px;color:var(--ink);background:var(--sheet);border:1.5px solid var(--line);border-radius:10px;padding:13px 14px;width:100%}
.field:focus{border-color:var(--accent);outline:0}
.or{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.notice{padding:12px 14px;border-radius:10px;font-size:14px;background:color-mix(in srgb,var(--hl) 22%,var(--sheet));border:1px solid color-mix(in srgb,var(--hl) 60%,var(--line))}
.err{color:#b2412f;font-size:14px}
.legal{font-size:13px;color:var(--muted)}
@media (max-width:860px){
  .hero .wrap,.privacy .wrap{grid-template-columns:1fr;gap:36px}
  .pain-grid,.steps{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav .signin{margin-left:auto}
  section{padding-block:56px}
  .ba{max-width:440px;margin-inline:auto;width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* use-case pages */
.uc-hero{padding-block:56px 40px}.uc-hero .wrap{display:grid;gap:20px;max-width:860px}
.uc-hero h1{font-size:clamp(2.2rem,5vw,3.6rem)}
.crumbs{font:13px var(--f-mono);color:var(--muted)}.crumbs a{text-decoration:none}.crumbs a:hover{text-decoration:underline}
.pair{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;max-width:760px;margin-top:8px}
.pair figure{margin:0;display:grid;gap:6px}.pair img{border-radius:10px;box-shadow:var(--shadow);aspect-ratio:4/5;object-fit:cover;width:100%;height:auto}
.pair figcaption{font:12px var(--f-mono);color:var(--muted)}.pair .arrow{font:600 1.6rem var(--f-display);color:var(--accent)}
.prose{max-width:760px;display:grid;gap:30px;margin-top:8px}.prose h2{font-size:clamp(1.4rem,2.6vw,1.9rem)}.prose p{color:var(--muted);margin-top:8px}
.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:28px}
.related a{display:grid;gap:6px;padding:18px;border-radius:12px;border:1px solid var(--line);background:var(--sheet);text-decoration:none}
.related a:hover{border-color:var(--muted)}.related small{color:var(--muted)}
@media (max-width:760px){.related{grid-template-columns:1fr}.pair{grid-template-columns:1fr 1fr}.pair .arrow{display:none}}