:root{--brand:#16A34A;--brand-dark:#0B6B3A;--ink:#0F1A14;--muted:#5B6B61;--bg:#F1F7F3;--card:#fff}
@media (prefers-color-scheme:dark){:root{--ink:#E6EFE9;--muted:#9DB0A4;--bg:#0C120E;--card:#16201A}}
*{box-sizing:border-box}html,body{margin:0}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}
.center-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px}
.center-card{background:var(--card);border-radius:20px;padding:32px 24px;max-width:420px;width:100%;text-align:center;box-shadow:0 8px 30px rgba(0,0,0,.06)}
.logo{width:64px;height:64px;border-radius:18px;margin:0 auto 16px;background:linear-gradient(135deg,#22B455,var(--brand-dark));display:flex;align-items:center;justify-content:center;color:#FFD84D;font-weight:800;font-size:26px}
h1{font-size:24px;margin:0 0 8px}h1 span{color:var(--brand)}
p{color:var(--muted);margin:0 0 20px}
.play-button{display:inline-flex;align-items:center;gap:10px;background:#000;color:#fff;text-decoration:none;padding:10px 18px;border-radius:12px}
.play-button small{display:block;font-size:10px;letter-spacing:.5px}.play-button strong{display:block;font-size:17px;line-height:1.1}
.play-button span{text-align:left}
.fine{font-size:13px;margin:16px 0 0}.fine a{color:var(--brand)}
.code{font-family:ui-monospace,Menlo,monospace;background:rgba(22,163,74,.1);color:var(--brand);padding:2px 6px;border-radius:6px}

.doc{max-width:760px;margin:0 auto;padding:32px 16px 64px}
.doc-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);text-decoration:none;margin-bottom:24px}
.doc-brand span:last-child{color:var(--brand)}
.logo.sm{width:34px;height:34px;border-radius:10px;font-size:16px;margin:0}
.doc h1{font-size:30px}
.doc h2{font-size:19px;margin:32px 0 8px}
.doc h3{font-size:15px;margin:18px 0 6px}
.doc p,.doc li{color:var(--ink);opacity:.88;margin:0 0 12px}
.doc ul{padding-left:20px;margin:0 0 12px}
.doc a{color:var(--brand)}
.doc .updated{color:var(--muted);opacity:1}
.panel{background:var(--card);border-radius:16px;padding:20px;margin:0 0 16px;box-shadow:0 8px 30px rgba(0,0,0,.06);display:flex;flex-direction:column;gap:10px}
.panel[hidden]{display:none}
.panel p{margin:0}
.panel input,.panel textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid rgba(127,127,127,.25);border-radius:10px;padding:10px 12px;width:100%}
.panel label{font-size:13px;font-weight:600;color:var(--muted)}
.panel .check{display:flex;gap:8px;align-items:center;color:var(--ink);font-weight:500}
.panel .check input{width:auto}
#email-form{display:flex;flex-direction:column;gap:8px}
.or{text-align:center;font-size:13px;color:var(--muted)!important}
.btn-main,.btn-line,.btn-danger{font:inherit;font-weight:600;border-radius:10px;padding:11px 14px;cursor:pointer;border:1px solid transparent;width:100%}
.btn-main{background:var(--brand);color:#fff}
.btn-line{background:transparent;color:var(--ink);border-color:rgba(127,127,127,.35)}
.btn-danger{background:#E5484D;color:#fff}
.btn-danger:disabled{opacity:.5;cursor:default}
.warn{background:rgba(229,72,77,.12);color:#E5484D;border-radius:10px;padding:10px 12px}
.msg{color:var(--muted);min-height:1em}