:root{
  --jade-950:#06261c;
  --jade-900:#0b3d2e;
  --jade-800:#0f4a38;
  --jade-700:#145a43;
  --jade-500:#2f8f6e;
  --ink:#122018;
  --muted:#5a6f65;
  --line:#d5e4db;
  --card:#f7fbf0;
  --alert:#b42318;
  --ok:#0f6b4c;
  --gold:#e6d28a;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  min-height:100vh;
  font-family:"PingFang SC","Hiragino Sans GB","Noto Sans SC",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(900px 480px at 8% -8%, rgba(47,143,110,.32), transparent 58%),
    radial-gradient(720px 420px at 100% 0%, rgba(31,79,85,.4), transparent 55%),
    linear-gradient(165deg, var(--jade-950), var(--jade-900) 42%, #1f4f55);
}
a{color:var(--jade-700);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{
  position:sticky;top:0;z-index:20;
  backdrop-filter:blur(12px);
  background:rgba(6,38,28,.72);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header-inner{
  max-width:1080px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.brand-lockup{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:#fff;
  display:grid;place-items:center;color:var(--jade-800);font-weight:700;
}
.brand-lockup strong{display:block;font-size:18px;letter-spacing:.04em}
.brand-lockup span{display:block;font-size:12px;opacity:.75}
.nav{display:flex;flex-wrap:wrap;gap:8px 14px}
.nav a{color:rgba(255,255,255,.88);font-size:14px;text-decoration:none;padding:6px 2px}
.nav a:hover,.nav a.active{color:var(--gold);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:36px 20px 64px}
.hero{color:#fff;margin-bottom:28px}
.hero .eyebrow{font-size:13px;opacity:.78;margin:0 0 10px;letter-spacing:.08em}
.hero h1{margin:0 0 10px;font-size:clamp(32px,5vw,48px)}
.hero p{margin:0;max-width:40em;line-height:1.7;opacity:.9;font-size:16px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.panel,.card{
  background:var(--card);
  border-radius:22px;
  box-shadow:0 22px 48px rgba(0,0,0,.24);
}
.panel{padding:26px 24px}
.card{padding:22px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.card a.more{display:inline-block;margin-top:14px;font-weight:600;color:var(--jade-700)}
.panel h2{margin:0 0 6px;font-size:22px}
.hint{margin:0 0 18px;color:var(--muted);font-size:13px;line-height:1.55}
label{display:block;font-size:13px;color:var(--muted);margin:0 0 6px}
.field{margin-bottom:14px}
input,select,textarea{
  width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;
  padding:12px 14px;font-size:16px;color:var(--ink);outline:none;font-family:inherit;
}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(47,143,110,.18)}
.row{display:flex;gap:10px}
.row input{flex:1}
button{appearance:none;border:0;cursor:pointer;font-size:15px;font-weight:600;font-family:inherit}
.btn-code{
  white-space:nowrap;padding:0 14px;border-radius:12px;background:#e8f2ee;color:var(--jade-700);min-width:112px;
}
.btn-code:disabled,.btn-primary:disabled{opacity:.55;cursor:not-allowed}
.btn-primary{
  width:100%;margin-top:8px;padding:14px 16px;border-radius:14px;color:#fff;
  background:linear-gradient(135deg, var(--jade-700), #1f7a5f 55%, #1f4f55);
}
.btn-secondary{
  display:inline-block;padding:12px 16px;border-radius:12px;background:#e8f2ee;color:var(--jade-800);font-weight:600;
}
.msg{display:none;margin:0 0 14px;padding:10px 12px;border-radius:12px;font-size:14px;line-height:1.45}
.msg.show{display:block}
.msg.err{background:#fdecea;color:var(--alert)}
.msg.ok{background:#e8f6ef;color:var(--ok)}
.result{
  display:none;margin-top:16px;padding:16px;border-radius:14px;background:#fff;border:1px solid var(--line);
}
.result.show{display:block}
.result dl{margin:0;display:grid;grid-template-columns:100px 1fr;gap:8px 12px;font-size:14px}
.result dt{color:var(--muted)}
.result dd{margin:0;font-weight:600}
.site-footer{
  max-width:1080px;margin:0 auto;padding:0 20px 40px;color:rgba(255,255,255,.72);font-size:13px;line-height:1.7;
}
.site-footer a{color:var(--gold)}
.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.tab{
  padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.55);border:1px solid var(--line);
  color:var(--muted);font-size:13px;cursor:pointer;
}
.tab.active{background:var(--jade-700);color:#fff;border-color:transparent}
.two-col{display:grid;gap:16px;grid-template-columns:1.1fr .9fr}
@media (max-width:800px){.two-col{grid-template-columns:1fr}.result dl{grid-template-columns:88px 1fr}}