:root{--bg:#f5f5f7;--paper:#fff;--ink:#1d1d1f;--mute:#6e6e73;--line:rgba(0,0,0,.09);--tint:#f0f0f3;--acc:#0071e3;--c:#0071e3}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#000;--paper:#161618;--ink:#f5f5f7;--mute:#9a9aa0;--line:rgba(255,255,255,.12);--tint:#1f1f22;--acc:#2997ff}}
:root[data-theme=dark]{--bg:#000;--paper:#161618;--ink:#f5f5f7;--mute:#9a9aa0;--line:rgba(255,255,255,.12);--tint:#1f1f22;--acc:#2997ff}
*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:-.022em;font-weight:700}
code{font:.85em ui-monospace,"SF Mono",Menlo,monospace;background:var(--tint);padding:2px 6px;border-radius:6px}
.topbar{position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--line)}
.topbar .in{max-width:1100px;margin:0 auto;padding:0 24px;height:52px;display:flex;align-items:center;gap:20px;font-size:13.5px}
.brand{font-weight:700;color:var(--ink)}.brand:hover{text-decoration:none}.brand span{color:var(--mute);font-weight:400;margin-left:8px}
.crumbs{color:var(--mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.crumbs a{color:var(--mute)}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px 120px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--c)}
/* ---------- home ---------- */
.homehead{padding:56px 0 28px;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.homehead h1{font-size:34px;margin:0}.homehead p{margin:0;color:var(--mute);font-size:15px}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}@media(max-width:980px){.cards{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.cards{grid-template-columns:1fr}}
.ncard{position:relative;display:flex;flex-direction:column;color:inherit;background:var(--paper);border-radius:24px;padding:28px 28px 26px;min-height:330px;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.04),0 8px 30px rgba(0,0,0,.04);transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s}
.ncard:hover{text-decoration:none;transform:translateY(-4px);box-shadow:0 2px 4px rgba(0,0,0,.05),0 24px 50px rgba(0,0,0,.10)}
.ncard .num{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:var(--c);color:#fff;font-weight:800;font-size:19px;letter-spacing:-.02em;margin-bottom:20px}
.ncard h2{margin:0 0 10px;font-size:25px;line-height:1.15}.ncard p{margin:0;color:var(--mute);font-size:15px;line-height:1.45}
.ncard .stats{margin-top:auto;padding-top:24px;display:flex;gap:18px}.ncard .stats div{font-size:12.5px;color:var(--mute)}.ncard .stats b{display:block;font-size:22px;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.ncard .track{position:absolute;top:24px;right:24px;font-size:11.5px;font-weight:600;color:var(--c);background:color-mix(in srgb,var(--c) 10%,transparent);padding:5px 10px;border-radius:999px}
/* ---------- campaign ---------- */
.chead{padding:56px 0 36px;display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:start}@media(max-width:640px){.chead{grid-template-columns:1fr}}
.chead .num{width:76px;height:76px;border-radius:22px;background:var(--c);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:28px;letter-spacing:-.02em}
.chead h1{font-size:clamp(34px,4.5vw,48px);line-height:1.05;margin:2px 0 10px}.chead .who{font-size:18px;line-height:1.45;color:var(--mute);margin:0;max-width:760px}
.chead .facts{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.pill{font-size:12.5px;font-weight:600;background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:6px 12px;color:var(--ink)}
.section{padding:34px 0 8px}.sechead{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:0 0 18px}
h2.sec{font-size:26px;margin:0}.sec-sub{margin:0;color:var(--mute);font-size:14px}
.alist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.alist li{min-width:0}@media(max-width:860px){.alist{grid-template-columns:1fr}}
.acard{display:flex;flex-direction:column;min-width:0;color:inherit;background:var(--paper);border-radius:22px;padding:24px 26px 22px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 8px 30px rgba(0,0,0,.04);transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s}
.acard:hover{text-decoration:none;transform:translateY(-3px);box-shadow:0 2px 4px rgba(0,0,0,.05),0 22px 44px rgba(0,0,0,.09)}
.acard .id{display:flex;align-items:center;gap:10px;margin-bottom:14px;min-width:0}.acard .id .n{font-size:13px;font-weight:700;color:var(--c)}.acard .id .angle{font-size:12.5px;color:var(--mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.variants{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.variants li{display:grid;grid-template-columns:30px 1fr;gap:12px;align-items:start;padding:12px 14px;border-radius:14px;background:var(--tint);font-size:16px;line-height:1.3;font-weight:600;letter-spacing:-.01em}
.variants li.A{background:var(--ink);color:var(--bg)}.variants .tag{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:var(--paper);color:var(--ink);font-size:12px;font-weight:800;margin-top:-1px}
.variants li.A .tag{background:var(--c);color:#fff}.variants .live{font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;opacity:.75;margin-left:8px}
.acard .deck{margin:14px 0 0;color:var(--mute);font-size:14.5px;line-height:1.5}
.kitgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}@media(max-width:860px){.kitgrid{grid-template-columns:1fr}}
.kcard{display:block;color:inherit;background:var(--paper);border-radius:20px;padding:22px 22px 20px;min-height:140px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 6px 24px rgba(0,0,0,.04);transition:transform .2s,box-shadow .2s}
.kcard:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 2px 4px rgba(0,0,0,.05),0 16px 36px rgba(0,0,0,.08)}
.kcard .kn{font-size:12px;font-weight:700;color:var(--c)}.kcard h3{margin:8px 0 6px;font-size:17.5px;line-height:1.25}.kcard p{margin:0;color:var(--mute);font-size:13.5px;line-height:1.45}
.offer{margin:-8px 0 20px;color:var(--mute);font-size:15px;max-width:760px}
/* ---------- advertorial ---------- */
.teststrip{max-width:720px;margin:36px auto 0;background:var(--paper);border-radius:20px;padding:18px 20px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 8px 30px rgba(0,0,0,.05)}
.teststrip .th{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--mute);flex-wrap:wrap}.teststrip .angle{flex-basis:100%;margin-left:18px;font-weight:400;letter-spacing:0;text-transform:none;font-size:13px}
.teststrip .dot{width:8px;height:8px;border-radius:50%;background:#34c759;box-shadow:0 0 0 4px rgba(52,199,89,.18)}
.teststrip ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}@media(max-width:640px){.teststrip ul{grid-template-columns:1fr}}
.teststrip li{border-radius:14px;padding:12px 14px;background:var(--tint);font-size:14px;line-height:1.3;font-weight:600;letter-spacing:-.01em;display:flex;flex-direction:column;gap:6px}
.teststrip li.A{background:var(--ink);color:var(--bg)}.teststrip .tag{font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--c)}.teststrip li.A .tag{color:#fff}
.teststrip .state{font-size:11px;font-weight:600;opacity:.7;text-transform:uppercase;letter-spacing:.06em}
.article{max-width:720px;margin:0 auto;padding-top:44px}
.article .eyebrow{margin-bottom:12px}
.article h1{font-size:clamp(36px,5vw,52px);line-height:1.06;margin:0 0 20px}
.article .deck{font-size:21px;line-height:1.4;color:var(--mute);margin:0 0 24px;font-weight:400;letter-spacing:-.005em}
.byline{font-size:13px;color:var(--mute);padding:12px 0;margin:0 0 36px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:14px}
.body p{margin:0 0 24px;font-size:18.5px;line-height:1.6}.body h2{font-size:26px;line-height:1.2;margin:48px 0 14px;padding-top:18px;border-top:3px solid var(--c);display:inline-block}
.body h3{font-size:23px;margin:44px 0 12px;padding-top:14px;border-top:3px solid var(--c);display:inline-block;line-height:1.2}
.body blockquote{margin:28px 0;padding:22px 26px;background:var(--paper);border-radius:18px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 6px 24px rgba(0,0,0,.04);font-size:17.5px}.body blockquote p{margin:0 0 12px;font-size:17.5px}.body blockquote p:last-child{margin:0}
.body ul,.body ol{margin:0 0 24px;padding-left:22px;font-size:18px}.body li{margin:0 0 8px}
.bridge{margin:44px 0 18px;font-size:22px;font-weight:700;line-height:1.3;letter-spacing:-.015em}
.signup{position:relative;overflow:hidden;margin:26px 0 0;background:var(--paper);border-radius:26px;padding:44px 40px 34px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 12px 40px rgba(0,0,0,.06)}.signup::before{content:'';position:absolute;left:0;right:0;top:0;height:6px;background:var(--c)}@media(max-width:600px){.signup{padding:28px 22px}}
.signup h2,.signup h3{margin:0 0 16px;font-size:29px;line-height:1.12}
.signup .items p,.signup p{margin:0 0 12px;font-size:15.5px;line-height:1.5}.signup .items strong{display:block;font-size:16px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0 14px}@media(max-width:600px){.form{grid-template-columns:1fr}}
.form input,.form select{width:100%;font:16px -apple-system,BlinkMacSystemFont,"SF Pro Text",sans-serif;padding:15px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);appearance:none;-webkit-appearance:none}
.form .full{grid-column:1/-1}
.btn{display:block;width:100%;background:var(--c);color:#fff;font:700 17px -apple-system,BlinkMacSystemFont,"SF Pro Text",sans-serif;border:0;border-radius:12px;padding:17px 22px;cursor:pointer}
.foot{font-size:13px;color:var(--mute);margin:14px 0 0}.foot p{margin:0 0 8px;font-size:13px;color:var(--mute)}
.aff{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}.aff p{font-size:14.5px;color:var(--ink)}
.notes{max-width:720px;margin:56px auto 0;color:var(--mute);font-size:13px;line-height:1.6}.notes details{margin-top:8px}.notes summary{cursor:pointer}
.pn{max-width:720px;margin:36px auto 0;display:flex;justify-content:space-between;gap:12px;font-size:14px;font-weight:600}
/* ---------- kit ---------- */
.kitnav{max-width:820px;margin:34px auto 0;display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}.kitnav::-webkit-scrollbar{display:none}
.kitnav a{flex:0 0 auto;font-size:13px;font-weight:600;padding:9px 14px;border-radius:999px;background:var(--paper);color:var(--ink);white-space:nowrap;box-shadow:0 1px 2px rgba(0,0,0,.05)}.kitnav a:hover{text-decoration:none}.kitnav a.cur{background:var(--c);color:#fff}
.kdoc{max-width:720px;margin:0 auto;padding-top:40px}
.kdoc h1{font-size:clamp(32px,4.5vw,46px);line-height:1.08;margin:12px 0 12px}.kdoc .sub{color:var(--mute);font-size:18px;line-height:1.4;margin:0 0 34px}
.kdoc h2{font-size:25px;margin:46px 0 12px;padding-top:16px;border-top:3px solid var(--c);display:inline-block}.kdoc h3{font-size:20px;margin:30px 0 8px}.kdoc p{margin:0 0 20px;font-size:18px;line-height:1.55}
.kdoc ul,.kdoc ol{margin:0 0 20px;padding-left:22px;font-size:17.5px}.kdoc li{margin:0 0 8px}
.kdoc blockquote{margin:26px 0;padding:20px 24px;background:var(--paper);border-radius:18px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 6px 24px rgba(0,0,0,.04)}.kdoc blockquote p{margin:0 0 10px;font-size:17px}
.kdoc em{color:var(--mute)}.kdoc hr{margin:44px 0}
.tablewrap{overflow-x:auto;margin:16px 0 26px;background:var(--paper);border-radius:16px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 6px 24px rgba(0,0,0,.04)}table{border-collapse:collapse;font-size:14.5px;min-width:100%}
th,td{padding:12px 14px;text-align:left;vertical-align:top;border-top:1px solid var(--line)}thead th{border-top:0;font-weight:700;font-size:12.5px;color:var(--mute);letter-spacing:.04em;text-transform:uppercase}
hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.sitefoot{padding:26px 24px 44px;color:var(--mute);font-size:12.5px;text-align:center}