:root{--blue: #4fc3f7;--green: #66bb6a;--navy: #19365c;--brand: linear-gradient(120deg, var(--blue), var(--green));--bg: #f4f7fa;--surface: #ffffff;--surface-2: #eef3f8;--text: #14233a;--muted: #5d6b80;--border: #dfe7f0;--shadow: 0 10px 30px rgba(25, 54, 92, .08);--shadow-lg: 0 24px 60px rgba(25, 54, 92, .16);--warn-bg: #fff4e0;--warn-fg: #7a4a00;--tip-bg: #e6f6ec;--tip-fg: #1d5a31;--radius: 20px}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0c1626;--surface: #132238;--surface-2: #182b45;--text: #e8eef7;--muted: #9aabc2;--border: #243a58;--shadow: 0 10px 30px rgba(0, 0, 0, .35);--shadow-lg: 0 24px 60px rgba(0, 0, 0, .5);--warn-bg: #3a2c10;--warn-fg: #ffd89a;--tip-bg: #12341f;--tip-fg: #a6e3b8}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:inherit;text-decoration:none}h1,h2,h3{line-height:1.15;margin:0}p{margin:0}.container{width:min(1120px,100% - 32px);margin-inline:auto}.page{padding-block:120px 80px;min-height:70vh}.muted{color:var(--muted)}.prewrap{white-space:pre-line}.backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;overflow:hidden;pointer-events:none}.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.35}.b1{width:520px;height:520px;background:var(--blue);top:-140px;left:-120px}.b2{width:480px;height:480px;background:var(--green);right:-140px;top:30%}.b3{width:420px;height:420px;background:#7e57c2;opacity:.18;bottom:-160px;left:30%}.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;background:var(--brand);transform-origin:0 50%;z-index:60}.site-header{position:fixed;top:0;left:0;right:0;z-index:50;padding:14px 0;transition:background .3s,box-shadow .3s,backdrop-filter .3s}.site-header.scrolled{background:color-mix(in srgb,var(--surface) 82%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--border)}.header-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem}.logo-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--brand);color:#fff}.nav-desktop{display:none;gap:4px}.nav-link{position:relative;padding:8px 14px;border-radius:999px;font-weight:600;font-size:.95rem;color:var(--muted);transition:color .2s}.nav-link:hover,.nav-link[aria-current=page]{color:var(--text)}.nav-link>span:first-child{position:relative;z-index:1}.nav-underline{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:999px;background:var(--surface);box-shadow:var(--shadow)}.burger{width:44px;height:44px;border:0;border-radius:14px;background:var(--surface);box-shadow:var(--shadow);display:grid;place-content:center;gap:5px;cursor:pointer;z-index:70}.burger span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .35s,opacity .2s}.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.burger.open span:nth-child(2){opacity:0}.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-menu{position:fixed;top:0;right:0;bottom:0;left:0;z-index:65;background:var(--bg);padding-top:96px;overflow-y:auto}.mobile-link{display:flex;gap:12px;align-items:center;padding:14px 4px;font-size:1.35rem;font-weight:700;border-bottom:1px solid var(--border)}.mobile-link.active{color:var(--blue)}@media (min-width: 980px){.nav-desktop{display:flex}.burger{display:none}}.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:14px}.word-mask{display:inline-block;overflow:hidden;vertical-align:bottom;padding-bottom:.08em}.word{display:inline-block;will-change:transform}.page-header{margin-bottom:44px;max-width:760px}.page-title{font-size:clamp(2rem,5vw,3.4rem);font-weight:800;letter-spacing:-.02em}.lead{margin-top:16px;font-size:1.1rem;color:var(--muted);max-width:62ch}.section{margin-top:72px}.section-title{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;margin-bottom:22px}.back{display:inline-block;margin-bottom:18px;font-weight:600;color:var(--muted);transition:color .2s,transform .2s}.back:hover{color:var(--text);transform:translate(-4px)}.btn{display:inline-block;padding:14px 26px;border-radius:999px;font-weight:700}.btn.primary{background:var(--brand);color:#fff;box-shadow:0 12px 28px #4fc3f766}.btn.ghost{background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--border)}.chip{font-size:.72rem;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--surface-2);color:var(--muted)}.chip.light{background:#ffffff47;color:#fff}.hero{position:relative;padding:40px 0 70px;max-width:820px}.hero-title{font-size:clamp(2.4rem,7vw,4.8rem);font-weight:800;letter-spacing:-.03em}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}.hero-orb{position:absolute;right:-20px;top:20px;width:190px;height:190px;border-radius:50%;background:var(--brand);display:none;place-items:center;color:#fff;font-size:4rem;box-shadow:var(--shadow-lg)}@media (min-width: 1100px){.hero-orb{display:grid;right:-220px;top:60px;width:260px;height:260px;font-size:5.5rem}}.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.stats>div{background:var(--surface);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:grid}.stats strong{font-size:2.4rem;font-weight:800;background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}@media (min-width: 760px){.stats{grid-template-columns:repeat(4,1fr)}}.tile-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}.tile{position:relative;display:grid;gap:6px;height:100%;padding:24px;border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);transition:box-shadow .25s}.tile:hover{box-shadow:var(--shadow-lg)}.tile-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--surface-2);font-size:1.5rem;margin-bottom:8px}.tile strong{font-size:1.1rem}.tile-arrow{position:absolute;right:22px;bottom:18px;font-size:1.3rem;transition:transform .25s}a:hover>.tile-arrow,.tile:hover .tile-arrow{transform:translate(6px)}.quote{margin-top:72px;padding:44px 30px;border-radius:28px;background:var(--brand);color:#fff;text-align:center;box-shadow:var(--shadow-lg)}.quote p{font-size:clamp(1.3rem,3vw,2rem);font-weight:700}.quote-by{display:inline-block;margin-top:14px;font-weight:600;opacity:.9}blockquote.quote.big{margin:56px 0 0;text-align:left;font-size:1.15rem;line-height:1.8;font-weight:500}.surgery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.surgery-card{position:relative;overflow:hidden;display:grid;align-content:end;gap:8px;min-height:220px;padding:26px;border-radius:26px;color:#fff;box-shadow:var(--shadow-lg)}.surgery-card strong{font-size:1.45rem;line-height:1.2}.surgery-short{opacity:.9;font-weight:600}.surgery-shine{position:absolute;top:0;right:0;bottom:0;left:0;width:60%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);transform:skew(-20deg)}.panel{background:var(--surface);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.panel h2,.panel h3{margin-bottom:10px;font-size:1.2rem}.two-col{display:grid;gap:40px}@media (min-width: 860px){.two-col{grid-template-columns:1fr 1fr}}.bullets{display:grid;gap:12px}.bullet{display:flex;gap:14px;align-items:flex-start;background:var(--surface);padding:16px 18px;border-radius:16px;box-shadow:var(--shadow)}.bullet-dot{flex:none;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;font-weight:800;font-size:.85rem;color:#fff}.bullet.good .bullet-dot{background:var(--green)}.bullet.bad .bullet-dot{background:#ef8a3c}.bullet.info 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strong{display:block;margin-bottom:6px}.callout.warn{background:var(--warn-bg);color:var(--warn-fg)}.callout.tip{background:var(--tip-bg);color:var(--tip-fg)}.panel+.callouts{margin-top:20px}.rule-list{display:grid;gap:14px}.rule-row{display:flex;gap:18px;align-items:flex-start;background:var(--surface);padding:20px 22px;border-radius:18px;box-shadow:var(--shadow)}.rule-num{flex:none;display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;font-weight:800}.checkpoints{display:grid;gap:20px;margin-top:28px}.checkpoint{position:relative;padding-left:76px}.checkpoint-badge{position:absolute;left:22px;top:24px;display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800}.checkpoint ul{margin:0;padding-left:18px;color:var(--muted)}.checkpoint li+li{margin-top:6px}.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:48px 0 28px}.footer-grid{display:grid;gap:28px}@media (min-width: 760px){.footer-grid{grid-template-columns:1fr 1fr}}.footer-links{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;color:var(--muted)}.footer-links a:hover{color:var(--text)}.disclaimer{margin-top:30px;padding-top:20px;border-top:1px solid var(--border);font-size:.85rem;color:var(--muted)}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}