/* Self-hosted variable fonts — no Google Fonts CDN dependency */
@font-face{
  font-family: 'Geist';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/Geist-Variable.woff2') format('woff2-variations');
}
@font-face{
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/GeistMono-Variable.woff2') format('woff2-variations');
}

:root{
  --bg:#fafafa; --surface:#ffffff; --surface-2:#f5f5f5;
  --line:#ececec; --line-2:#e4e4e4;
  --ink:#0a0a0a; --ink-2:#262626; --muted:#737373; --muted-2:#8e8e8e;
  --accent:#3b6ea8; --accent-ink:#fff; --accent-soft:#eaf1f9; --accent-line:#c9dcef;
  --ok:#2c7256; --warn:#9c6022; --err:#a0443a;
  --sans:"Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:"Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:20px;
  --shadow-xs:0 1px 2px rgba(10,10,10,.04);
  --shadow-sm:0 1px 2px rgba(10,10,10,.05), 0 1px 3px rgba(10,10,10,.06);
  --shadow-md:0 4px 10px -2px rgba(10,10,10,.06), 0 2px 6px -1px rgba(10,10,10,.04);
  --shadow-lg:0 20px 40px -20px rgba(10,10,10,.18), 0 8px 16px -8px rgba(10,10,10,.08);
}
[data-accent="blue"]{--accent:#3b6ea8;--accent-soft:#eaf1f9;--accent-line:#c9dcef;}
[data-accent="indigo"]{--accent:#4f46e5;--accent-soft:#eef2ff;--accent-line:#c7d2fe;}
[data-accent="emerald"]{--accent:#2c7256;--accent-soft:#ecfdf5;--accent-line:#a7f3d0;}
[data-accent="graphite"]{--accent:#0f172a;--accent-soft:#f1f5f9;--accent-line:#cbd5e1;}
[data-accent="amber"]{--accent:#b45309;--accent-soft:#fffbeb;--accent-line:#fde68a;}
[data-theme="dark"]{
  --bg:#0a0a0a;--surface:#141414;--surface-2:#1c1c1c;
  --line:#262626;--line-2:#2e2e2e;
  --ink:#fafafa;--ink-2:#d4d4d4;--muted:#b3b3b3;--muted-2:#8a8a8a;
  --shadow-xs:0 1px 2px rgba(0,0,0,.4);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4), 0 1px 3px rgba(0,0,0,.5);
  --shadow-md:0 4px 10px -2px rgba(0,0,0,.5);
  --shadow-lg:0 20px 40px -20px rgba(0,0,0,.7);
  --accent-soft:#1a2738;--accent-line:#274566;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink)}
body{font-family:var(--sans);font-size:15px;line-height:1.55;font-weight:400;letter-spacing:-0.005em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
a{color:inherit}
::selection{background:var(--accent);color:#fff}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
@media(max-width:720px){.wrap{padding:0 18px}}
@media(max-width:420px){.wrap{padding:0 16px}}

/* NAV */
.nav{position:sticky;top:0;z-index:40;background:rgba(250,250,250,.8);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s, background .2s}
.nav.scrolled{border-color:var(--line);background:rgba(250,250,250,.92)}
[data-theme="dark"] .nav{background:rgba(10,10,10,.7)}
[data-theme="dark"] .nav.scrolled{background:rgba(10,10,10,.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding-block:14px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;letter-spacing:-.015em;text-decoration:none;color:inherit}
.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--ink);color:var(--bg);display:grid;place-items:center;font-family:var(--sans);font-size:18px;font-weight:400;line-height:1;padding-bottom:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 12px;text-decoration:none;color:var(--ink-2);font-size:14px;font-weight:500;border-radius:8px;transition:background .15s;white-space:nowrap}
.nav-links a:hover{background:var(--surface-2);color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:8px;flex-shrink:0}
.nav-cta a{text-decoration:none;white-space:nowrap}
.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface);cursor:pointer;align-items:center;justify-content:center;padding:0;flex-shrink:0}
.nav-burger span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;transition:transform .25s, opacity .15s}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);transition:transform .25s, top .25s}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.nav-burger.open span{background:transparent}
.nav-burger.open span::before{top:0;transform:rotate(45deg)}
.nav-burger.open span::after{top:0;transform:rotate(-45deg)}
@media(max-width:1100px){.nav-links{gap:0}.nav-links a{padding:8px 10px}}
@media(max-width:1000px){.nav-links a[href="#parents"]{display:none}}
@media(max-width:880px){.nav-links{display:none}.nav-burger{display:inline-flex}.nav-cta .btn-text{display:none}.nav-cta .btn{padding:9px 12px;font-size:13px}}

/* Mobile slide-out drawer */
.nav-drawer{position:fixed;inset:0;z-index:90;pointer-events:none;visibility:hidden}
.nav-drawer.open{pointer-events:auto;visibility:visible}
.nav-drawer .scrim{position:absolute;inset:0;background:rgba(10,10,10,.4);opacity:0;transition:opacity .25s}
.nav-drawer.open .scrim{opacity:1}
.nav-drawer .panel{position:absolute;top:0;right:0;bottom:0;width:min(86vw,360px);background:var(--bg);box-shadow:var(--shadow-lg);transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;padding:18px 20px 24px}
.nav-drawer.open .panel{transform:translateX(0)}
.nav-drawer .head{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-top:6px}
.nav-drawer .links{display:flex;flex-direction:column;gap:2px;flex:1}
.nav-drawer .links a{font-size:18px;font-weight:500;letter-spacing:-.015em;color:var(--ink);text-decoration:none;padding:14px 12px;border-radius:10px;display:flex;justify-content:space-between;align-items:center}
.nav-drawer .links a:active{background:var(--surface-2)}
.nav-drawer .links a.on{background:var(--surface-2);color:var(--ink)}
.nav-drawer .links a .arr{color:var(--muted-2);font-weight:300}
.nav-drawer .foot{margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.nav-drawer .foot .btn{width:100%;justify-content:center;padding:14px 18px;font-size:15px}
.nav-drawer .meta{margin-top:14px;font-size:12px;color:var(--muted);text-align:center}

/* Sticky bottom CTA (mobile only, on landing) */
.sticky-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:50;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:color-mix(in srgb, var(--bg) 92%, transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line);transform:translateY(110%);transition:transform .3s cubic-bezier(.2,.8,.2,1)}
.sticky-cta.on{transform:translateY(0)}
.sticky-cta .btn{width:100%;justify-content:center;padding:15px 18px;font-size:15.5px;border-radius:12px}
@media(max-width:720px){.sticky-cta{display:block}body.has-sticky-cta{padding-bottom:80px}}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;font-family:var(--sans);font-size:14px;font-weight:500;border-radius:10px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:all .15s ease;line-height:1;letter-spacing:-.005em}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn.primary:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.ghost{background:transparent;color:var(--ink-2);border-color:var(--line-2)}
.btn.ghost:hover{background:var(--surface-2);color:var(--ink)}
.btn.lg{padding:13px 20px;font-size:15px;border-radius:12px}
.btn .arr{transition:transform .15s}
.btn:hover .arr{transform:translateX(2px)}

/* HERO */
.hero{padding:84px 0 56px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-200px 0 auto 0;height:560px;background:radial-gradient(900px 320px at 50% 0%, var(--accent-soft), transparent 70%);z-index:0;pointer-events:none}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
@media(max-width:960px){.hero-inner{grid-template-columns:1fr;gap:48px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 11px;border-radius:999px;background:var(--surface);border:1px solid var(--line-2);font-size:12.5px;color:var(--ink-2);font-weight:500;margin-bottom:20px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
h1{font-size:clamp(38px, 5.4vw, 68px);line-height:1.04;letter-spacing:-.035em;margin:0;font-weight:600;text-wrap:balance}
h1 em{font-style:normal;color:var(--accent)}
.lede{margin-top:20px;font-size:18px;color:var(--muted);line-height:1.5;max-width:48ch;text-wrap:pretty}
.hero-cta{display:flex;gap:10px;margin-top:30px;flex-wrap:wrap}
.hero-trust{margin-top:20px;font-size:13.5px;color:var(--muted);letter-spacing:-.005em}
.hero-trust b{color:var(--ink);font-weight:500}

/* Hero practice mock */
.hero-mock{position:relative}
.hmock{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--shadow-lg);overflow:hidden;position:relative}
.hmock::before{content:"";position:absolute;inset:-1px;border-radius:var(--r-xl);background:linear-gradient(180deg, var(--accent-soft), transparent 50%);z-index:0;pointer-events:none}
.hmock > *{position:relative;z-index:1}
.hmock-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.hmock-bar i,.hmock-bar .dot-i{width:9px;height:9px;border-radius:50%;background:var(--line-2);display:inline-block}
.hmock-bar .crumb{flex:1;margin-left:10px;font-size:12px;color:var(--muted)}
.hmock-bar .crumb b{color:var(--ink);font-weight:500}
.hmock-body{padding:32px 28px 30px;text-align:center}
.hmock .qi{font-size:12px;color:var(--muted);letter-spacing:.04em;font-weight:500;text-transform:uppercase}
.hmock .q{font-size:64px;font-weight:600;letter-spacing:-.04em;margin:10px 0 6px;font-feature-settings:"tnum"}
.hmock .q .x{color:var(--muted-2);font-weight:400;margin:0 10px}
.hmock .ansbox{display:inline-flex;align-items:center;gap:4px;background:var(--surface);border:2px solid var(--accent);border-radius:14px;padding:8px 22px;font-size:30px;font-weight:600;letter-spacing:-.02em;min-width:130px;justify-content:center;box-shadow:0 0 0 4px var(--accent-soft)}
.hmock .caret{display:inline-block;width:2px;height:26px;background:var(--accent);animation:bl 1s step-end infinite;margin-left:2px}
@keyframes bl{50%{opacity:0}}
.hmock .progress{margin:20px auto 0;max-width:240px;height:3px;border-radius:2px;background:var(--line);overflow:hidden}
.hmock .progress b{display:block;height:100%;background:var(--accent);width:32%;border-radius:2px}
.hmock .pmeta{font-size:12px;color:var(--muted);margin-top:8px}
.hmock-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:0 28px 22px}
.hmock-pad button,.hmock-pad .key{display:grid;place-items:center;height:36px;border-radius:9px;border:1px solid var(--line-2);background:var(--surface);font-family:var(--sans);font-size:15px;font-weight:500;color:var(--ink);cursor:default}

/* TRUST STRIP */
.trust{padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
.trust-row{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
@media(max-width:720px){.trust-row{grid-template-columns:1fr;gap:8px}}
.trust-item{display:flex;align-items:center;gap:14px;padding:0 24px;border-right:1px solid var(--line);min-height:48px}
.trust-item:first-child{padding-left:0}
.trust-item:last-child{border-right:none;padding-right:0}
@media(max-width:720px){.trust-item{border-right:none;padding:6px 0}}
.trust-item .ic{width:36px;height:36px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex-shrink:0}
.trust-item .ic svg{width:18px;height:18px}
.trust-item b{display:block;font-size:14px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.trust-item span{font-size:12.5px;color:var(--muted)}

/* SECTIONS */
section{padding:96px 0}
.sec-head{max-width:680px;margin-bottom:48px}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);font-weight:500;letter-spacing:0;margin-bottom:14px}
.sec-eyebrow::before{content:"";width:14px;height:1px;background:var(--accent)}
h2{font-size:clamp(28px,3.4vw,42px);line-height:1.08;letter-spacing:-.03em;font-weight:600;margin:0;text-wrap:balance;color:var(--ink)}
.sec-sub{margin-top:14px;color:var(--muted);font-size:17px;line-height:1.5;max-width:58ch;text-wrap:pretty}

/* PROBLEM/VALUE */
.value-intro{max-width:60ch;color:var(--muted);font-size:17px;line-height:1.55;margin-top:0;margin-bottom:36px}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:880px){.value-grid{grid-template-columns:1fr}}
.value{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;display:flex;flex-direction:column;gap:10px}
.value .vk{font-size:12.5px;color:var(--muted);font-weight:500}
.value h3{font-size:18px;font-weight:600;letter-spacing:-.015em;margin:0;color:var(--ink);text-wrap:balance}
.value p{color:var(--muted);font-size:14px;line-height:1.55;margin:0}
.value .vs{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;font-size:12.5px}
.value .vs .bad{color:var(--muted);text-decoration:line-through;text-decoration-color:var(--line-2)}
.value .vs .good{color:var(--accent)}

/* HOW IT WORKS — 3 STEPS */
.steps-wrap{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
@media(max-width:880px){.steps{grid-template-columns:1fr}}
.step{padding:36px 32px;border-right:1px solid var(--line);position:relative;display:flex;flex-direction:column;gap:14px}
.step:last-child{border-right:none}
@media(max-width:880px){.step{border-right:none;border-bottom:1px solid var(--line)}}
.step .sn{font-size:12.5px;color:var(--accent);font-weight:500}
.step h3{margin:0;font-size:20px;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.step p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.5}
.step .vis{margin-top:6px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 16px;min-height:120px;display:flex;align-items:center;justify-content:center}
.step .vis-q{font-size:34px;font-weight:600;letter-spacing:-.03em;color:var(--ink);font-feature-settings:"tnum"}
.step .vis-q .x{color:var(--muted-2);margin:0 8px;font-weight:400}
.step .vis-q .a{color:var(--accent)}
.step .vis-bars{display:flex;align-items:flex-end;gap:6px;height:60px}
.step .vis-bars i{width:10px;background:var(--accent-soft);border-radius:3px;display:block}
.step .vis-bars i.f{background:var(--accent)}
.step .vis-check{display:grid;grid-template-columns:repeat(6,14px);gap:8px 10px;align-items:center;justify-content:center;position:relative}
.step .vis-check i{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--line-2);display:block;background:var(--surface)}
.step .vis-check i.d{background:var(--accent);border-color:var(--accent)}
.step .vis-check .lbl{grid-column:1 / -1;text-align:center;font-family:var(--mono);font-size:11.5px;color:var(--muted);margin-top:4px;letter-spacing:.02em}
.step .vis-mock{width:100%;display:flex;flex-direction:column;gap:6px}
.step .vis-mock .row{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.step .vis-mock .row b{color:var(--ink);font-weight:500}
.step .vis-mock .bar{height:4px;background:var(--line);border-radius:2px;overflow:hidden}
.step .vis-mock .bar i{display:block;height:100%;background:var(--accent);border-radius:2px}

/* RESEARCH PREVIEW */
.research-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:24px}
@media(max-width:960px){.research-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.research-grid{grid-template-columns:1fr}}
.rcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;transition:all .2s}
.rcard:hover{border-color:var(--line-2);box-shadow:var(--shadow-md);transform:translateY(-1px)}
.rcard .ri{width:32px;height:32px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:14px;font-family:var(--mono);font-weight:500;font-size:13px}
.rcard h3,.rcard h4{margin:0 0 6px;font-size:15.5px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.rcard p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.5}
.research-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);text-decoration:none;font-weight:500;font-size:14.5px}
.research-link:hover .arr{transform:translateX(3px)}
.research-link .arr{transition:transform .15s}

/* PRODUCT PREVIEW (4 screens) */
.preview-bg{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.preview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media(max-width:880px){.preview-grid{grid-template-columns:1fr}}
.preview{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;display:flex;flex-direction:column}
.preview-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid var(--line);background:var(--surface-2);font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.preview-bar i,.preview-bar .dot-i{width:8px;height:8px;border-radius:50%;background:var(--line-2);display:inline-block}
.preview-bar i:first-child,.preview-bar .dot-i:first-of-type{margin-left:2px}
.preview-bar b{color:var(--ink);font-weight:500;margin-left:6px}
.preview-body{padding:22px;flex:1;display:flex;flex-direction:column;gap:12px}
.preview-cap{padding:18px 22px 22px;border-top:1px solid var(--line);background:var(--surface)}
.preview-cap h3,.preview-cap h4{margin:0 0 4px;font-size:15.5px;font-weight:600;letter-spacing:-.01em}
.preview-cap p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.5}

/* Daily practice preview */
.pv-daily{align-items:center;justify-content:center;text-align:center;min-height:240px}
.pv-daily .qm{font-size:12px;color:var(--muted);font-weight:500}
.pv-daily .qq{font-size:54px;font-weight:600;letter-spacing:-.04em;margin:8px 0;font-feature-settings:"tnum"}
.pv-daily .qq .x{color:var(--muted-2);font-weight:400;margin:0 8px}
.pv-daily .inp{display:inline-flex;align-items:center;background:var(--surface);border:2px solid var(--accent);border-radius:12px;padding:6px 18px;font-size:24px;font-weight:600;min-width:100px;justify-content:center;box-shadow:0 0 0 3px var(--accent-soft)}
.pv-daily .inp .caret{width:2px;height:22px;background:var(--accent);animation:bl 1s step-end infinite;margin-left:2px;display:inline-block}
.pv-daily .pg{max-width:180px;width:100%;height:3px;border-radius:2px;background:var(--line);overflow:hidden;margin:14px auto 0}
.pv-daily .pg b{display:block;height:100%;width:34%;background:var(--accent);border-radius:2px}

/* Focus facts preview */
.pv-focus{gap:8px}
.pv-focus .head{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--muted);font-weight:500;margin-bottom:6px}
.pv-focus .head b{color:var(--accent);font-weight:500}
.pv-focus .row{display:flex;align-items:center;justify-content:space-between;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:11px 14px}
.pv-focus .row .f{font-family:var(--mono);font-size:14.5px;font-weight:500;color:var(--ink);font-feature-settings:"tnum"}
.pv-focus .row .s{font-size:12px;font-weight:500}
.pv-focus .row .s.slow{color:var(--warn)}
.pv-focus .row .s.repair{color:var(--err)}
.pv-focus .row .s.ok{color:var(--ok)}
.pv-focus .row .bar{flex:1;height:3px;border-radius:2px;background:var(--line);margin:0 14px;overflow:hidden}
.pv-focus .row .bar i{display:block;height:100%;background:var(--accent);border-radius:2px}

/* Fluency map preview */
.pv-map{padding:18px;display:flex;align-items:center;justify-content:center}
.fmap{display:grid;grid-template-columns:18px repeat(11,minmax(0, 22px));gap:3px;font-family:var(--mono);font-size:9.5px;width:max-content;max-width:100%}
.fmap .hd{color:#5c5c5c;text-align:center;padding:2px 0;line-height:1}
.fmap .rl{color:#5c5c5c;text-align:right;padding-right:4px;align-self:center;line-height:1}
.fmap .c{width:22px;height:22px;border-radius:3px;display:block}
.fmap .c.l4{background:var(--accent)}
.fmap .c.l3{background:color-mix(in srgb, var(--accent) 55%, var(--surface))}
.fmap .c.l2{background:color-mix(in srgb, var(--accent) 25%, var(--surface))}
.fmap .c.l1{background:var(--surface-2)}
.fmap .c.slow{background:#f4d8a3}
[data-theme="dark"] .fmap .c.slow{background:#5b3d10}
.fmap .c.repair{background:#e8b6b0}
[data-theme="dark"] .fmap .c.repair{background:#5a1f1a}

/* Mock preview */
.pv-mock{align-items:center;justify-content:center;text-align:center;gap:14px}
.pv-mock .pill{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.04em}
.pv-mock .pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.pv-mock h5{margin:0;font-size:22px;font-weight:600;letter-spacing:-.02em;text-wrap:balance}
.pv-mock .meta{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.04em}
.pv-mock .meta b{color:var(--ink);font-weight:500}
.pv-mock .ring{position:relative;width:88px;height:88px;margin:6px auto 0}
.pv-mock .ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.pv-mock .ring .num{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--mono);font-size:22px;font-weight:600;color:var(--ink);font-feature-settings:"tnum"}
.pv-mock .ring .num small{color:var(--muted);font-size:11px;font-weight:400;margin-left:1px}

/* PRIVACY */
.privacy{background:var(--bg)}
.privacy h2{max-width:18ch}
.privacy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px}
@media(max-width:880px){.privacy-grid{grid-template-columns:1fr}}
.pcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;display:flex;flex-direction:column;gap:8px}
.pcard .pi{width:30px;height:30px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:8px}
.pcard h4{margin:0;font-size:14.5px;font-weight:600;letter-spacing:-.01em}
.pcard p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.5}
.privacy-link{margin-top:28px;display:inline-flex;align-items:center;gap:8px;color:var(--accent);text-decoration:none;font-weight:500;font-size:14.5px}
.privacy-link:hover .arr{transform:translateX(3px)}
.privacy-link .arr{transition:transform .15s}

/* PARENTS TEASER */
.teaser{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.teaser-card{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
@media(max-width:880px){.teaser-card{grid-template-columns:1fr;gap:24px}}
.teaser h2{max-width:20ch}
.teaser p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.55;max-width:54ch;text-wrap:pretty}
.teaser .links{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap}
.teaser-vis{display:flex;flex-direction:column;gap:10px}
.tv-row{display:flex;justify-content:space-between;align-items:center;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.tv-row .lbl{font-size:13.5px;color:var(--ink-2)}
.tv-row .val{font-size:13.5px;color:var(--ink);font-weight:500}
.tv-row .val.muted{color:var(--muted)}

/* FAQ */
.faq-list{margin-top:28px;border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{padding:22px 0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;list-style:none;font-size:16px;font-weight:500;letter-spacing:-.01em;color:var(--ink)}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list .plus{width:28px;height:28px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--muted);flex-shrink:0;transition:all .2s}
.faq-list details[open] .plus{background:var(--ink);color:var(--bg);border-color:var(--ink);transform:rotate(45deg)}
.faq-list .a{padding:0 0 22px;color:var(--muted);font-size:14.5px;line-height:1.6;max-width:70ch}

/* FINAL CTA */
.cta{padding:80px 0}
.cta-card{position:relative;overflow:hidden;background:var(--ink);color:var(--bg);border-radius:24px;padding:64px 56px;text-align:center}
[data-theme="dark"] .cta-card{background:var(--surface);border:1px solid var(--line-2)}
@media(max-width:720px){.cta-card{padding:44px 24px}}
.cta-card::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 360px at 50% 0%, color-mix(in srgb, var(--accent) 35%, transparent), transparent 60%);pointer-events:none}
.cta-card > *{position:relative;z-index:1}
.cta-card h2{color:var(--bg);font-size:clamp(30px,3.6vw,46px);max-width:18ch;margin:0 auto}
[data-theme="dark"] .cta-card h2{color:var(--ink)}
.cta-card p{color:color-mix(in srgb, var(--bg) 65%, transparent);margin:14px auto 0;font-size:17px;max-width:46ch;text-wrap:pretty}
[data-theme="dark"] .cta-card p{color:var(--muted)}
.cta-card .hero-cta{justify-content:center;margin-top:30px}
.cta-card .btn.primary{background:var(--bg);color:var(--ink);border-color:var(--bg)}
.cta-card .btn.primary:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.cta-card .btn.ghost{color:var(--bg);border-color:color-mix(in srgb, var(--bg) 25%, transparent)}
[data-theme="dark"] .cta-card .btn.ghost{color:var(--ink);border-color:var(--line-2)}
.cta-card .btn.ghost:hover{background:color-mix(in srgb, var(--bg) 12%, transparent);color:var(--bg)}
[data-theme="dark"] .cta-card .btn.ghost:hover{background:var(--surface-2);color:var(--ink)}

/* FOOTER */
footer{padding:48px 0 56px;border-top:1px solid var(--line);background:var(--bg)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
@media(max-width:720px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h5,.foot-grid .foot-h{font-size:13px;color:var(--ink);margin:0 0 14px;font-weight:600;letter-spacing:-.005em;line-height:1.3}
.foot-grid a{display:block;color:var(--ink-2);text-decoration:none;font-size:14px;padding:4px 0}
.foot-grid a:hover{color:var(--accent)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:40px;padding-top:24px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;flex-wrap:wrap;gap:12px}
.foot-brand p{margin-top:12px;font-size:13.5px;color:var(--muted);max-width:38ch;line-height:1.5}
.foot-note{font-size:12.5px;color:var(--muted);margin-top:8px}

/* Tweaks */
.tweaks{position:fixed;right:20px;bottom:20px;z-index:100;background:var(--surface);border:1px solid var(--line-2);padding:18px;border-radius:14px;width:260px;display:none;box-shadow:var(--shadow-lg)}
.tweaks.on{display:block}
.tweaks h4,.tweaks .tweaks-h{margin:0 0 14px;font-size:12.5px;font-weight:600;color:var(--ink);letter-spacing:0;line-height:1.3}
.tw-row{margin-bottom:14px}
.tw-row > span{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}
.sws{display:flex;gap:6px}
.sws button{width:24px;height:24px;border-radius:8px;border:1px solid var(--line-2);cursor:pointer;padding:0}
.sws button.sel{outline:2px solid var(--ink);outline-offset:2px}
.seg{display:flex;background:var(--surface-2);border-radius:8px;padding:3px;border:1px solid var(--line)}
.seg button{flex:1;border:none;background:transparent;padding:6px;font-family:var(--sans);font-size:11.5px;color:var(--muted);cursor:pointer;border-radius:6px;font-weight:500}
.seg button.sel{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-xs)}

.ic{display:inline-block;width:16px;height:16px;vertical-align:middle}

/* ============================================ */
/* MOBILE TUNING (≤720px)                       */
/* ============================================ */
@media(max-width:720px){
  body{font-size:15.5px}

  /* Sections breathe less */
  section{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .sec-sub{font-size:15.5px;margin-top:10px}
  h1{font-size:clamp(34px,9vw,44px);line-height:1.06;letter-spacing:-.03em}
  h2{font-size:clamp(26px,6.6vw,32px);line-height:1.1}

  /* Hero */
  .hero{padding:36px 0 40px}
  .hero::before{height:380px;background:radial-gradient(640px 280px at 50% 0%, var(--accent-soft), transparent 70%)}
  .hero-inner{gap:36px}
  .lede{font-size:16px;margin-top:14px;max-width:none}
  .hero-cta{margin-top:22px;flex-direction:column;gap:8px}
  .hero-cta .btn{width:100%;justify-content:center;padding:14px 18px;font-size:15px}
  .hero-trust{margin-top:18px;font-size:13px}

  /* Hero practice mock — keep it but compress */
  .hmock-body{padding:24px 18px 22px}
  .hmock .q{font-size:46px}
  .hmock .ansbox{font-size:24px;padding:7px 18px;min-width:110px}
  .hmock-pad{grid-template-columns:repeat(3,1fr);gap:5px;padding:0 18px 18px}
  .hmock-pad button{height:44px;font-size:16px}

  /* Trust strip */
  .trust{padding:20px 0}
  .trust-row{gap:14px}
  .trust-item{padding:0;gap:12px}
  .trust-item .ic{width:32px;height:32px}

  /* Value cards */
  .value-grid{gap:10px}
  .value{padding:20px}
  .value-intro{font-size:15.5px;margin-bottom:24px}

  /* Steps — full-bleed cards on mobile */
  .step{padding:26px 20px}
  .step h3{font-size:18px}
  .step .vis{padding:16px 14px;min-height:96px}
  .step .vis-q{font-size:28px}

  /* Research grid */
  .rcard{padding:18px}

  /* Product preview */
  .preview-grid{gap:14px}
  .preview-body{padding:18px}
  .preview-cap{padding:14px 18px 18px}
  .pv-daily{min-height:200px}
  .pv-daily .qq{font-size:42px}

  /* FAQ */
  .faq-list summary{padding:18px 0;font-size:15.5px;gap:14px}
  .faq-list .a{font-size:14.5px;padding-bottom:18px}

  /* Final CTA */
  .cta{padding:48px 0}
  .cta-card{padding:36px 22px;border-radius:18px}
  .cta-card .hero-cta{flex-direction:column;gap:8px}
  .cta-card .btn{width:100%;justify-content:center}

  /* Footer */
  footer{padding:36px 0 40px}
  .foot-grid{gap:24px}
  .foot-grid h5{margin-bottom:10px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:6px;margin-top:28px;padding-top:20px;font-size:12px}

  /* Tweaks panel — bottom sheet on mobile */
  .tweaks{left:16px;right:16px;bottom:16px;width:auto;border-radius:16px}

  /* Page hero (research, parents, privacy) */
  .page-hero{padding:36px 0 32px}
  .page-hero h1{max-width:none}
  .page-hero .lede{font-size:15.5px;margin-top:14px}
}

@media(max-width:420px){
  /* Tighter still on small phones (375-iPhone SE) */
  h1{font-size:34px}
  h2{font-size:26px}
  .hero{padding:28px 0 32px}
  section{padding:48px 0}
  .step{padding:24px 18px}
  .value{padding:18px}
}

/* ============================================ */
/* A11Y                                          */
/* ============================================ */

/* Visually hidden — keep accessible to AT */
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Skip link */
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;z-index:1000}
.skip-link:focus{left:16px;top:14px;width:auto;height:auto;padding:10px 16px;background:var(--ink);color:var(--bg);border-radius:10px;font-size:14px;font-weight:500;text-decoration:none;outline:2px solid var(--accent);outline-offset:2px}

/* Focus visible — uniform across interactive controls */
:where(a, button, summary, [role="tab"], [role="button"], [tabindex="0"]):focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px
}
.btn:focus-visible{outline-offset:3px}
.faq-list summary:focus-visible{outline-offset:4px;border-radius:4px}
.nav-links a:focus-visible,.nav-drawer .links a:focus-visible{outline-offset:0;background:var(--surface-2)}

/* Inputs: replace outline with border-color shift */
input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft)
}

/* Active nav link via aria-current (replaces inline style hack) */
.nav-links a[aria-current="page"]{color:var(--ink);background:var(--surface-2)}
.nav-drawer .links a[aria-current="page"]{background:var(--surface-2);color:var(--ink)}

/* Tabs (practice page) */
[role="tab"]{cursor:pointer}
[role="tab"]:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration:0.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:0.01ms!important;
    scroll-behavior:auto!important
  }
  .hmock .caret,.pv-daily .caret{animation:none;opacity:1}
  .rcard:hover{transform:none}
}