:root{--brand:#6b4d91;--brand-strong:#553c77;--brand-soft:#f4efff;--brand-100:#e7dcfb;--heading:#140a24;--fg:#29251f;--muted:#5a554c;--subtle:#6e695f;--bg:#f7f5f2;--surface:#fff;--border:#e6e3dd;--danger:#b42318;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-pill:999px;
--font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 var(--font)}
a{color:var(--brand-strong)}
.top{display:flex;align-items:center;justify-content:space-between;max-width:640px;margin:0 auto;padding:14px 16px}
.logo{font-weight:800;letter-spacing:-.025em;color:var(--heading);text-decoration:none;font-size:1.15rem}
.lang{border:1px solid var(--border);background:var(--surface);border-radius:var(--r-pill);padding:6px 14px;font:600 .875rem var(--font);color:var(--brand-strong);cursor:pointer;min-height:36px}
main{max-width:640px;margin:0 auto;padding:0 16px 24px}
.hero h1{font-size:clamp(1.9rem,7vw,2.6rem);line-height:1.15;letter-spacing:-.03em;color:var(--heading);margin:8px 0 10px}
.lead{color:var(--muted);font-size:1.05rem;margin:0 0 12px}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 18px}
.chips li{background:var(--brand-soft);color:var(--brand-strong);border-radius:var(--r-pill);padding:4px 12px;font-size:.85rem;font-weight:600}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:18px 16px;box-shadow:0 1px 2px rgba(20,10,36,.04)}
.card h2{font-size:1.05rem;color:var(--heading);margin:18px 0 8px}
.card h2:first-of-type{margin-top:0}
.f{display:block;margin:0 0 14px;border:0;padding:0;min-width:0}
.f>span,legend{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;color:var(--fg);padding:0}
small{display:block;color:var(--subtle);font-size:.8rem;margin-top:4px}
input[type=text],input[type=email],input[type=date],select,textarea{width:100%;font:16px var(--font);color:var(--fg);background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);padding:10px 12px;min-height:44px;margin-top:4px}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus,.lang:focus,.btn:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.row .f{margin-bottom:10px}
.opts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.opt{display:flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:var(--r-sm);padding:8px 10px;min-height:44px;cursor:pointer;font-size:.95rem}
.opt:has(input:checked){border-color:var(--brand);background:var(--brand-soft)}
.opt input,.consent input{accent-color:var(--brand);width:18px;height:18px;flex:none}
.sub{margin-top:8px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;margin:6px 0 14px;color:var(--muted)}
.btn{display:block;width:100%;background:var(--brand);color:#fff;border:0;border-radius:var(--r-md);padding:14px;font:700 1.05rem var(--font);cursor:pointer;min-height:50px}
.btn:hover{background:var(--brand-strong)}
.btn[disabled]{opacity:.6;cursor:wait}
.err{color:var(--danger);font-size:.9rem;margin:0 0 10px}
.fine{color:var(--subtle);font-size:.8rem;text-align:center;margin:10px 0 0}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.invalid{border-color:var(--danger)!important}
.thanks{margin-bottom:16px;border-color:var(--brand-100);background:var(--brand-soft)}
.thanks-only #leadForm{display:none}
.thanks-only #thanks[hidden]{display:block!important}
.foot{max-width:640px;margin:0 auto;padding:8px 16px 32px;color:var(--subtle);font-size:.85rem}
.foot a{color:var(--subtle)}
.muted{color:var(--subtle)}
.prose h1{font-size:1.5rem;color:var(--heading);margin-top:0}
.prose h3{font-size:1rem;color:var(--heading);margin:18px 0 6px}
html[data-lang=zh] .l-en,html[data-lang=en] .l-zh{display:none}
@media (max-width:420px){.opts{grid-template-columns:repeat(2,1fr)}.row{grid-template-columns:1fr}}
/* admin */
.admin{font-size:14px}
.bar{display:flex;gap:14px;align-items:center;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border)}
.bar .sp{flex:1}
.wide{max-width:none;padding:8px 16px 40px}
.admin h2{font-size:1rem;color:var(--heading)}
.scroll{overflow-x:auto}
.admin table{border-collapse:collapse;background:#fff;border:1px solid var(--border)}
.admin th,.admin td{border-bottom:1px solid var(--border);padding:6px 8px;text-align:left;vertical-align:top;max-width:280px;overflow-wrap:anywhere}
.admin th{background:var(--brand-soft);font-weight:600;white-space:nowrap}
.del button{background:none;border:1px solid var(--border);border-radius:6px;color:var(--danger);cursor:pointer;padding:3px 8px}
.two{display:grid;grid-template-columns:minmax(260px,1fr) 2fr;gap:20px}
@media (max-width:900px){.two{grid-template-columns:1fr}}
.draft{margin-bottom:16px}.draft h3{margin:0 0 4px;font-size:1rem}
.draft textarea{font:14px/1.5 var(--font)}
.actions{display:flex;gap:10px;flex-wrap:wrap}.actions .btn{width:auto;padding:10px 16px;min-height:0;font-size:.95rem}
.btn2{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:10px 16px;font:600 .95rem var(--font);cursor:pointer}
.warn{color:#8a6108;background:#fff8e6;border-radius:8px;padding:6px 10px}
.flash{background:var(--brand-soft);border-radius:8px;padding:8px 12px;grid-column:1/-1}
pre.mail{white-space:pre-wrap;font:14px/1.5 var(--font);background:#fff;border:1px solid var(--border);border-radius:8px;padding:12px}

.center{text-align:center}
fieldset.invalid .opt{border-color:var(--danger)}
fieldset.invalid legend{color:var(--danger)}
label.consent.invalid{color:var(--danger);outline:2px solid var(--danger);outline-offset:4px;border-radius:6px}
label.consent.invalid input{outline:2px solid var(--danger)}
/* chat */
.chatpage .hero h1{font-size:clamp(1.6rem,6vw,2.2rem)}
.chat{display:flex;flex-direction:column;gap:10px;padding:12px}
.log{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;max-height:62vh;overflow-y:auto}
.m{white-space:pre-wrap;overflow-wrap:anywhere;border-radius:var(--r-md);padding:10px 12px;font-size:.95rem;max-width:92%}
.m.bot{background:var(--brand-soft);color:var(--fg);align-self:flex-start}
.m.me{background:#fff;border:1px solid var(--border);align-self:flex-end}
.m.wait{opacity:.7;font-style:italic}
.composer{display:flex;gap:8px;align-items:flex-end}
.composer textarea{margin-top:0;min-height:48px}
.btn.send{width:auto;padding:12px 18px;min-height:48px}
.chatfoot{display:flex;gap:14px;align-items:center;font-size:.85rem;flex-wrap:wrap}
.linkbtn{background:none;border:0;color:var(--danger);cursor:pointer;font:inherit;padding:0;text-decoration:underline}
.sr{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}