:root {
  --bg:#f6f7fb; --surface:rgba(255,255,255,.86); --text:#171820;
  --muted:#656975; --line:rgba(31,36,50,.1); --blue:#4257e6;
  --green:#12a567; --shadow:0 16px 45px rgba(36,44,73,.08);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 85% 5%,rgba(66,87,230,.12),transparent 25rem),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Hiragino Sans","Yu Gothic",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit}.shell{width:min(calc(100% - 40px),900px);margin-inline:auto}
.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(18px)}
.nav-inner{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px}.wordmark{font-size:15px;font-weight:800;text-decoration:none;letter-spacing:-.02em}nav{display:flex;gap:20px}nav a{color:var(--muted);font-size:13px;font-weight:700;text-decoration:none}nav a:hover{color:var(--text)}
.hero{padding-block:clamp(72px,13vw,132px) clamp(44px,8vw,76px);text-align:center}.brand-mark{width:82px;height:82px;margin:0 auto 25px;padding:19px;display:flex;align-items:end;justify-content:center;gap:7px;border-radius:23px;background:linear-gradient(145deg,#3149d8,#6856ef);box-shadow:0 18px 40px rgba(66,87,230,.26)}.brand-mark span{width:10px;border-radius:8px;background:white}.brand-mark span:nth-child(1){height:25px}.brand-mark span:nth-child(2){height:36px}.brand-mark span:nth-child(3){height:47px}
.eyebrow{margin:0 0 10px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.18em}h1,h2,h3{margin:0;line-height:1.3;letter-spacing:-.035em}h1{font-size:clamp(36px,7vw,62px)}.lead{max-width:650px;margin:22px auto 0;color:var(--muted);font-size:clamp(16px,2.5vw,19px)}
.link-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.link-card{min-height:130px;padding:24px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;border:1px solid var(--line);border-radius:24px;background:var(--surface);box-shadow:var(--shadow);text-decoration:none;transition:transform 160ms ease,border-color 160ms ease}.link-card:hover{transform:translateY(-2px);border-color:rgba(66,87,230,.35)}.link-card strong,.link-card small{display:block}.link-card strong{font-size:17px}.link-card small{margin-top:3px;color:var(--muted);line-height:1.55}.icon-wrap{width:48px;height:48px;display:grid;place-items:center;border-radius:15px;font-size:23px}.icon-wrap.support{color:var(--blue);background:rgba(66,87,230,.1)}.icon-wrap.privacy{color:var(--green);background:rgba(18,165,103,.1)}.arrow{color:var(--muted);font-size:22px}
.principle{margin-top:18px;margin-bottom:90px;padding:25px 28px;display:flex;align-items:center;gap:19px;border:1px solid rgba(18,165,103,.2);border-radius:24px;background:rgba(18,165,103,.07)}.principle .principle-icon{color:var(--green);font-size:26px}.principle h2{font-size:18px}.principle p{margin:3px 0 0;color:var(--muted);font-size:14px}
.document{padding-block:58px 90px}.document-header{margin-bottom:36px}.document-header .eyebrow{margin-bottom:9px}.document-header h1{font-size:clamp(31px,6vw,48px)}.document-header p{margin:14px 0 0;color:var(--muted)}.content-card{padding:clamp(26px,6vw,54px);border:1px solid var(--line);border-radius:28px;background:var(--surface);box-shadow:var(--shadow)}.content-card section+section{margin-top:34px;padding-top:34px;border-top:1px solid var(--line)}.content-card h2{margin-bottom:12px;font-size:21px}.content-card h3{margin:22px 0 8px;font-size:17px}.content-card p{margin:0}.content-card p+p{margin-top:12px}.content-card ul{margin:10px 0 0;padding-left:1.35rem}.content-card li+li{margin-top:7px}.content-card a{color:var(--blue);font-weight:700;text-underline-offset:3px}.notice{padding:18px 20px;border-radius:16px;background:rgba(66,87,230,.08)}.faq{display:grid;gap:12px}.faq details{padding:17px 19px;border:1px solid var(--line);border-radius:16px;background:rgba(127,127,127,.035)}.faq summary{cursor:pointer;font-weight:750;line-height:1.5}.faq details p{margin-top:10px;color:var(--muted)}code{font-size:.92em}
footer{border-top:1px solid var(--line)}.footer-inner{padding-block:30px 44px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px}.footer-inner p{margin:0}
@media(max-width:680px){.shell{width:min(calc(100% - 28px),900px)}.site-header nav{gap:13px}.wordmark{font-size:13px}nav a{font-size:12px}.link-grid{grid-template-columns:1fr}.link-card{min-height:108px;padding:20px}.principle{align-items:flex-start;margin-bottom:64px;padding:22px}.document{padding-top:42px}.footer-inner{flex-direction:column;gap:4px}}
@media(prefers-color-scheme:dark){:root{--bg:#0b0c10;--surface:rgba(29,30,36,.9);--text:#f4f4f6;--muted:#a4a6b0;--line:rgba(255,255,255,.1);--blue:#7687ff;--green:#39cf8a;--shadow:0 18px 50px rgba(0,0,0,.24)}body{background:radial-gradient(circle at 85% 5%,rgba(66,87,230,.18),transparent 25rem),var(--bg)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.link-card{transition:none}}