:root{
  --paper:#FBFCFD; --ink:#222B38; --ink-soft:#4A5568; --border:#E4E9EF;
  --navy:#0A2A42; --navy-deep:#061D30; --blue:#1A689B; --blue-bright:#0F89EE;
  --gold:#FFC33B; --gold-deep:#F5B41F; --gold-tint:#FFF6DF;
  --mono:'JetBrains Mono',ui-monospace,monospace; --sans:'Inter',system-ui,sans-serif;
  --shadow-1:0 1px 2px rgba(16,36,54,.05),0 4px 12px rgba(16,36,54,.05),0 16px 32px rgba(16,36,54,.04);
  --r-pill:100px; --r-card:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);font-size:17px;line-height:1.6;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--blue-bright);outline-offset:2px;border-radius:4px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:clamp(72px,9vw,128px) 0}
h1,h2,h3{font-weight:600;letter-spacing:-.02em}
h1{font-size:clamp(34px,5.4vw,64px);line-height:1.08;letter-spacing:-.03em}
h2{font-size:clamp(28px,3.6vw,44px);line-height:1.15}
h3{font-size:20px;font-weight:550;letter-spacing:-.01em}
p{max-width:65ch}
.kicker{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);display:block;margin-bottom:14px}
.receipt{font-family:var(--mono);font-size:13.5px;letter-spacing:.02em;color:var(--ink-soft)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:550;font-size:16px;border-radius:var(--r-pill);padding:14px 26px;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-gold:hover{background:var(--gold-deep);transform:translateY(-1px);box-shadow:var(--shadow-1);text-decoration:none}
.btn-quiet{background:none;color:var(--ink-soft);font-weight:500;padding:14px 10px}
.btn-quiet:hover{color:var(--blue)}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(251,252,253,.92);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--border)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:2px;font-weight:600;font-size:17.5px;letter-spacing:-.02em;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo .seo{color:var(--blue)}
.logo .sun{width:15px;height:15px;margin:0 1px;display:inline-block}
.nav-links{display:flex;gap:28px;align-items:center;font-size:15.5px;font-weight:500}
.nav-links a{color:var(--ink-soft)}
.nav-links a:hover{color:var(--ink);text-decoration:none}
.nav .btn{padding:10px 20px;font-size:15px}
@media(max-width:840px){.nav-links a:not(.btn){display:none}}
/* hero */
.hero{position:relative;text-align:center;padding:clamp(80px,10vw,140px) 0 clamp(64px,8vw,104px);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(52% 44% at 26% 18%,rgba(15,137,238,.07),transparent 70%),
  radial-gradient(46% 40% at 78% 24%,rgba(255,195,59,.09),transparent 70%),
  radial-gradient(60% 50% at 50% 110%,rgba(26,104,155,.05),transparent 70%);pointer-events:none}
.hero>.wrap{position:relative}
.hero h1{max-width:820px;margin:0 auto 20px}
.hero .sub{font-size:clamp(17px,1.6vw,20px);color:var(--ink-soft);max-width:60ch;margin:0 auto 40px}
.capsule{display:flex;gap:8px;align-items:center;max-width:620px;margin:0 auto;background:rgba(255,255,255,.7);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:var(--r-pill);padding:7px;box-shadow:var(--shadow-1)}
.capsule input{flex:1;height:46px;border:0;background:#fff;border-radius:var(--r-pill);padding:0 22px;font-size:16.5px;font-family:var(--sans);color:var(--ink);min-width:0}
.capsule input::placeholder{color:#9AA6B5}
.capsule input:focus{outline:2px solid var(--blue-bright);outline-offset:-1px}
.capsule .btn{white-space:nowrap}
.hero .receipt{display:block;margin:18px auto 8px}
.hero .receipt .up{color:var(--blue)}
@media(max-width:560px){.capsule{flex-direction:column;border-radius:24px}.capsule input{width:100%;text-align:center}.capsule .btn{width:100%;justify-content:center}}
/* trust */
.trust{padding:26px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.trust-in{display:flex;flex-wrap:wrap;gap:14px 36px;align-items:center;justify-content:center}
.trust-in .receipt{white-space:nowrap}
.trust-in .stars{color:var(--gold-deep);letter-spacing:2px;font-size:15px}
/* shift */
.thennow{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:44px 0}
.tn{border:1px solid var(--border);border-radius:var(--r-card);background:#fff;padding:26px;box-shadow:var(--shadow-1)}
.tn .kicker{margin-bottom:16px}
.tn .row{height:11px;border-radius:6px;background:#E8EEF5;margin:9px 0}
.tn .row.hit{background:var(--blue);opacity:.85}
.tn .answer{border:1px solid var(--border);border-radius:10px;padding:14px;background:var(--paper);font-size:14px;color:var(--ink-soft);line-height:1.5}
.tn .cite{display:inline-block;background:var(--gold-tint);border-radius:5px;padding:1px 7px;font-family:var(--mono);font-size:11.5px;color:var(--navy);margin:3px 3px 0 0}
@media(max-width:720px){.thennow{grid-template-columns:1fr}}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:44px 0}
.tile{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1)}
.tile .num{font-size:38px;font-weight:600;letter-spacing:-.03em;color:var(--navy)}
.tile .what{font-size:15.5px;color:var(--ink);margin:8px 0 14px;line-height:1.45}
.tile .receipt{font-size:12px}
@media(max-width:820px){.tiles{grid-template-columns:1fr}}
.defn{border-left:3px solid var(--gold);background:var(--gold-tint);border-radius:0 var(--r-card) var(--r-card) 0;padding:26px 30px;margin:44px 0;max-width:760px}
.defn p{font-size:18.5px;line-height:1.55}
.faq{max-width:760px;margin-top:44px}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;padding:20px 4px;font-weight:550;font-size:17px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--blue);font-weight:400;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 4px 22px;color:var(--ink-soft);max-width:62ch}
/* system */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:52px;position:relative}
.step{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow-1);position:relative}
.step .n{font-family:var(--mono);font-size:34px;color:var(--blue);display:block;margin-bottom:14px}
.step h3{margin-bottom:10px}
.step p{font-size:15.5px;color:var(--ink-soft)}
.step .more{display:inline-block;margin-top:16px;font-size:15px;font-weight:550}
.badge{position:absolute;top:-12px;right:18px;background:var(--gold-tint);border:1px solid var(--gold);color:var(--navy);font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;border-radius:var(--r-pill);padding:4px 12px}
@media(max-width:820px){.steps{grid-template-columns:1fr}}
.sys-kick{margin-top:36px;font-size:16.5px}
/* proof */
.proof{background:var(--navy);color:#EAF1F7}
.proof h2{color:#fff}
.proof .kicker{color:#8FB4CE}
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:48px 0}
.case{background:rgba(255,255,255,.07);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:28px}
.case .who{font-weight:550;color:#fff;font-size:16.5px}
.case .num{font-size:30px;font-weight:600;letter-spacing:-.02em;color:var(--gold);margin:10px 0 4px}
.case p{font-size:15px;color:#C6D6E2;line-height:1.5}
.case .receipt{color:#8FB4CE;margin-top:14px;display:block;font-size:12px}
@media(max-width:820px){.cases{grid-template-columns:1fr}}
.reversal{text-align:center;font-size:18px;color:#EAF1F7;max-width:56ch;margin:0 auto 44px}
.reversal strong{color:var(--gold);font-weight:550}
.proof .capsule{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18)}
.proof .alt{text-align:center;margin-top:20px;font-size:15.5px;color:#C6D6E2}
.proof .alt a{color:#fff;font-weight:550}
/* footer */
.footer{background:var(--navy-deep);color:#B9C9D6;padding:clamp(64px,8vw,96px) 0 40px;font-size:15px}
.f-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px;margin-bottom:56px}
.footer h4{color:#fff;font-size:15.5px;font-weight:550;margin-bottom:16px}
.footer a{color:#B9C9D6}
.footer a:hover{color:#fff}
.footer ul{list-style:none}
.footer li{margin:9px 0}
.book{display:flex;gap:20px;align-items:flex-start}
.book-cover{flex:none;width:86px;height:126px;border-radius:6px;background:linear-gradient(160deg,var(--blue) 0%,var(--navy) 80%);border:1px solid rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;text-align:center;padding:10px;font-weight:600;font-size:12.5px;line-height:1.3;color:#fff;letter-spacing:.01em}
.book p{font-size:14.5px;line-height:1.55;margin:6px 0 14px}
.f-base{border-top:1px solid rgba(255,255,255,.1);padding-top:28px;display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;align-items:center}
.f-base .receipt{color:#7E93A5;font-size:12px}
@media(max-width:820px){.f-grid{grid-template-columns:1fr}}
/* reveal — JS-gated so content is ALWAYS visible without JS (AEO rule #7) */
html.js .rv{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
html.js .rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){html.js .rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---- inner page components ---- */
.page-hero{position:relative;text-align:left;padding:clamp(56px,7vw,96px) 0 clamp(40px,5vw,64px);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 80% 0%,rgba(15,137,238,.06),transparent 70%),radial-gradient(40% 50% at 10% 10%,rgba(255,195,59,.06),transparent 70%);pointer-events:none}
.page-hero>.wrap{position:relative}
.page-hero h1{max-width:820px;margin:10px 0 16px}
.page-hero .sub{font-size:clamp(17px,1.5vw,19.5px);color:var(--ink-soft);max-width:62ch}
.crumbs{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink-soft)}
.crumbs a{color:var(--ink-soft)}
.crumbs span{margin:0 6px;color:#B4C0CD}
.prose{max-width:760px}
.prose h2{margin:56px 0 18px}
.prose h3{margin:36px 0 12px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 18px 22px}
.prose li{margin:7px 0}
.prose table{border-collapse:collapse;width:100%;margin:24px 0;font-size:15.5px}
.prose th,.prose td{border:1px solid var(--border);padding:10px 14px;text-align:left;vertical-align:top}
.prose th{background:#fff;font-weight:550}
.prose blockquote{border-left:3px solid var(--gold);padding:4px 0 4px 20px;color:var(--ink-soft);margin:24px 0}
.prose .receipt{display:block;margin:-8px 0 20px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:44px 0}
.card-grid.two{grid-template-columns:repeat(2,1fr)}
.gcard{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1)}
.gcard h3{margin-bottom:10px}
.gcard p{font-size:15.5px;color:var(--ink-soft)}
.gcard .receipt{display:block;margin-top:14px;font-size:12px}
@media(max-width:820px){.card-grid,.card-grid.two{grid-template-columns:1fr}}
.cta-band{background:var(--navy);border-radius:var(--r-card);padding:clamp(36px,5vw,56px);text-align:center;color:#EAF1F7;margin:64px 0 0}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{margin:0 auto 28px;max-width:56ch;color:#C6D6E2}
.cta-band .capsule{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18)}
.form{max-width:560px}
.form label{display:block;font-weight:550;font-size:15px;margin:18px 0 6px}
.form input,.form textarea,.form select{width:100%;height:48px;border:1px solid var(--border);border-radius:10px;padding:0 16px;font-family:var(--sans);font-size:16px;color:var(--ink);background:#fff}
.form textarea{height:130px;padding:12px 16px;resize:vertical}
.mono-steps{list-style:none;margin:28px 0}
.mono-steps li{display:flex;gap:16px;align-items:baseline;margin:14px 0}
.mono-steps .n{font-family:var(--mono);font-size:13px;color:var(--blue);flex:none}
.article-card{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1);color:var(--ink);transition:transform .15s,box-shadow .15s}
.article-card:hover{transform:translateY(-2px);text-decoration:none}
.article-card h3{color:var(--ink);margin-bottom:8px}
.article-card p{font-size:15px;color:var(--ink-soft)}
.article-card .receipt{display:block;margin-top:14px;font-size:12px}
.engine-card{border-top:3px solid var(--blue)}