:root{--paper:#faf8f3;--ink:#1c1a17;--muted:#70695f;--line:#ddd8cc;--yellow:#ffce2e}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
header{padding:22px clamp(20px,4vw,64px);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:18px}
a{color:inherit;text-decoration:none}nav{display:flex;gap:24px;font-size:14px}.brand{font-size:22px;font-weight:650;letter-spacing:-.03em}
main{width:min(760px,calc(100% - 40px));margin:64px auto 72px}.kicker{font:11px/1.8 ui-monospace,monospace;letter-spacing:.16em;color:var(--muted)}
h1{font-size:clamp(38px,7vw,60px);line-height:1.2;font-weight:400;letter-spacing:-.045em;margin:16px 0}.intro{color:var(--muted);margin-bottom:32px}
form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:clamp(20px,4vw,32px)}label{display:block;font-size:14px;font-weight:550;margin-bottom:7px}
input,select,textarea{width:100%;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:7px;padding:11px 12px;font:inherit;margin-bottom:22px}textarea{resize:vertical;min-height:170px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--yellow);outline-offset:2px}.optional{display:grid;grid-template-columns:1fr 1.6fr;gap:18px}.honey{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.privacy{font-size:13px;color:var(--muted);margin:0 0 22px}button{border:0;border-radius:999px;padding:12px 24px;font:inherit;font-size:15px;font-weight:600;background:var(--yellow);color:var(--ink);cursor:pointer}button span{margin-left:20px}
button:disabled{opacity:.55;cursor:default}#status{margin:14px 0 0;font-size:14px;white-space:pre-line}#status[data-error=true]{color:#a42620}
footer{border-top:1px solid var(--line);padding:24px;text-align:center;font-size:12px;color:var(--muted)}
@media(max-width:540px){header{align-items:flex-start}nav{gap:12px;flex-wrap:wrap;justify-content:flex-end}.brand{font-size:18px;white-space:nowrap}main{margin-top:38px}.optional{grid-template-columns:1fr;gap:0}}