:root{
  --bg:#F6F5F1; --surface:#FFFFFF; --ink:#121212; --muted:#5F5E58; --line:#D6D4CC;
  --brand:#D0104C; --brand-deep:#970C38; --brand-soft:#FCE9EF; --on-brand:#FFFFFF;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#141413; --surface:#1E1D1B; --ink:#F2F1ED; --muted:#A8A69E; --line:#3A3936;
    --brand:#E8336B; --brand-deep:#FF8FB0; --brand-soft:#3A1524; --on-brand:#FFFFFF;
  }
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font-family:'Noto Sans TC',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;min-height:100vh;display:flex;flex-direction:column}
html[lang="ja"] body{font-family:'Noto Sans JP','Noto Sans TC',system-ui,sans-serif}
html[lang="en"] body{font-family:system-ui,-apple-system,'Segoe UI',Roboto,'Noto Sans TC',sans-serif}
header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;max-width:1080px;width:100%;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;text-decoration:none;color:var(--ink)}
.mark{width:36px;height:36px;border-radius:10px;background:var(--brand);display:grid;place-items:center}
.lang{display:flex;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px}
.lang button{min-width:44px;min-height:36px;border:0;border-radius:999px;background:transparent;color:var(--muted);font:inherit;font-size:14px;font-weight:700;cursor:pointer;padding:0 12px}
.lang button[aria-pressed="true"]{background:var(--brand);color:var(--on-brand)}
main{flex:1;display:flex;align-items:center;max-width:1080px;width:100%;margin:0 auto;padding:24px}
.hero{max-width:680px}
.badge{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:14px;background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:700}
h1{font-size:clamp(40px,8vw,72px);line-height:1.12;font-weight:900;margin:20px 0 16px;letter-spacing:-.01em}
h1 em{font-style:normal;color:var(--brand)}
.lead{font-size:clamp(17px,2.4vw,20px);line-height:1.7;color:var(--muted);margin:0 0 28px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 28px;padding:0;list-style:none}
.steps li{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;font-size:15px;line-height:1.6}
.steps b{display:block;color:var(--brand);font-size:13px;margin-bottom:4px}
.note{font-size:14px;color:var(--muted);line-height:1.6;margin:0}
footer{max-width:1080px;width:100%;margin:0 auto;padding:24px;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;border-top:1px solid var(--line)}
footer a{color:var(--muted)}
@media (max-width:640px){
  header{padding:16px}
  main{padding:16px}
  .steps{grid-template-columns:1fr}
  footer{padding:16px}
}
@media (max-width:420px){header{gap:8px}.brand,.lang button{white-space:nowrap}.brand{font-size:15px;gap:8px}.mark{width:32px;height:32px}.lang button{min-width:40px;padding:0 8px;font-size:13px}}
@media (max-width:360px){.brand>span:last-child{display:none}}
footer [data-t="fun"]{flex-basis:100%;color:var(--ink,inherit);font-weight:600}