*,*::before,*::after{box-sizing:border-box}
html,body{width:100%;height:100%;margin:0}
body{background:#05050a;color:#e8e8f2;font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;overflow:hidden;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;background:radial-gradient(900px 520px at 12% -10%,rgba(139,92,246,.30),transparent 60%),radial-gradient(760px 520px at 100% 105%,rgba(249,115,22,.16),transparent 62%),#05050a;pointer-events:none}
button,textarea{font-family:inherit}
a{color:inherit}
.app{position:relative;z-index:1;width:100%;max-width:920px;height:100vh;height:100dvh;margin:0 auto;display:flex;flex-direction:column;background:#0a0a12;overflow:hidden}
.topbar{flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 18px;padding-top:max(10px,env(safe-area-inset-top));background:linear-gradient(180deg,#0d0d18,#08080f);border-bottom:1px solid rgba(139,92,246,.26)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:38px;height:38px;border-radius:50%;display:block;flex:0 0 auto;border:1px solid rgba(196,181,253,.5);box-shadow:0 0 0 3px rgba(139,92,246,.10),0 6px 18px rgba(0,0,0,.5);object-fit:cover;background:#12121f}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text b{color:#f5f3ff;font-size:15.5px;letter-spacing:.06em;font-weight:800;white-space:nowrap}
.brand-text span{color:#9d9ab5;font-size:10.5px;letter-spacing:.08em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.ghost{appearance:none;border:1px solid rgba(139,92,246,.34);background:rgba(255,255,255,.02);color:#c9c6dd;font-size:11.5px;line-height:1;padding:8px 11px;border-radius:999px;cursor:pointer;transition:border-color .2s,color .2s,background .2s;text-decoration:none}
.ghost:hover{border-color:rgba(196,181,253,.8);color:#fff;background:rgba(139,92,246,.12)}
.chat{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;background:linear-gradient(180deg,#0a0a12,#0c0c16);scroll-behavior:smooth}
.welcome{max-width:680px;margin:0 auto;padding:42px 24px 26px;text-align:center}
.seal{width:84px;height:84px;margin:0 auto 18px;border-radius:50%;border:1px solid rgba(196,181,253,.5);padding:4px;background:#0f0f1a;box-shadow:0 12px 34px rgba(80,30,180,.28),0 0 0 6px rgba(139,92,246,.08)}
.seal img{width:100%;height:100%;display:block;border-radius:50%;object-fit:cover}
.kicker{margin:0 0 12px;color:#c4b5fd;font-size:10px;font-weight:800;letter-spacing:.24em}
h1{margin:0;font-size:clamp(30px,6vw,44px);line-height:1.22;letter-spacing:.02em;font-weight:800;color:#fff}
h1 em{font-style:normal;background:linear-gradient(100deg,#e9d5ff 0%,#c4b5fd 42%,#fdba74 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:560px;margin:16px auto 0;color:#a5a2ba;font-size:14.5px;line-height:1.95}
.platforms{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:16px 0 0}
.platforms span{border:1px solid #262636;background:#11111c;color:#b9b6cc;font-size:10.5px;letter-spacing:.04em;padding:6px 10px;border-radius:999px}
.suggest{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:24px;text-align:left}
.suggest button{appearance:none;border:1px solid #262636;background:#10101a;color:#dcd9ea;font-size:13px;line-height:1.55;text-align:left;padding:13px 14px;border-radius:12px;cursor:pointer;transition:border-color .2s,box-shadow .2s,transform .2s}
.suggest button:hover{border-color:#8b5cf6;box-shadow:0 8px 22px rgba(90,40,200,.22);transform:translateY(-1px)}
.privacy{margin:22px 0 0;color:#6f6c85;font-size:11px;line-height:1.7}
.services{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin:14px 0 0;color:#c4b5fd;font-size:10.5px;letter-spacing:.08em}
.services span{display:inline-flex;align-items:center;gap:10px}
.services span+span::before{content:"";width:3px;height:3px;border-radius:50%;background:#8b5cf6}
.inline-human{display:inline;border:0;background:none;color:#c4b5fd;font:inherit;font-weight:800;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:0}
.inline-human:hover{color:#fff}
.messages{max-width:760px;margin:0 auto;padding:8px 20px 26px;display:flex;flex-direction:column;gap:16px}
.msg{display:flex;gap:10px;align-items:flex-start;animation:rise .22s ease both}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.msg.user{flex-direction:row-reverse}
.avatar{width:30px;height:30px;border-radius:50%;flex:0 0 auto;border:1px solid #33324a;box-shadow:0 3px 10px rgba(0,0,0,.4);background:#12121f;object-fit:cover}
.bubble{max-width:79%;padding:12px 15px;border-radius:14px;font-size:14.5px;line-height:1.85;white-space:pre-wrap;word-break:break-word}
.msg.bot .bubble{background:#121220;border:1px solid #262636;border-top-left-radius:4px;color:#e4e2f0;box-shadow:0 4px 14px rgba(0,0,0,.22)}
.msg.user .bubble{background:linear-gradient(145deg,#7c3aed,#5b21b6);color:#fff;border-top-right-radius:4px;box-shadow:0 6px 18px rgba(90,40,200,.3)}
.typing{display:inline-flex;align-items:center;gap:5px;height:22px}
.typing i{width:6px;height:6px;border-radius:50%;background:#a78bfa;animation:blink 1.1s infinite ease-in-out}
.typing i:nth-child(2){animation-delay:.16s}
.typing i:nth-child(3){animation-delay:.32s}
@keyframes blink{0%,80%,100%{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}
.composer{flex:0 0 auto;background:#0b0b14;border-top:1px solid #212132;padding:10px 16px calc(9px + env(safe-area-inset-bottom))}
.composer-inner{max-width:760px;margin:0 auto;display:flex;align-items:flex-end;gap:8px;background:#11111c;border:1px solid #2a2a3c;border-radius:16px;padding:7px 7px 7px 14px;box-shadow:0 8px 24px rgba(0,0,0,.3);transition:border-color .2s,box-shadow .2s}
.composer-inner:focus-within{border-color:#8b5cf6;box-shadow:0 8px 26px rgba(90,40,200,.25)}
textarea#input{flex:1 1 auto;min-height:26px;max-height:120px;border:0;outline:0;resize:none;background:transparent;color:#eae8f5;font-size:15px;line-height:1.65;padding:5px 0}
textarea#input::placeholder{color:#6f6c85}
.send{flex:0 0 auto;width:42px;height:42px;border:0;border-radius:12px;background:linear-gradient(145deg,#8b5cf6,#f97316);color:#fff;display:grid;place-items:center;cursor:pointer;transition:filter .2s,opacity .2s;box-shadow:0 6px 16px rgba(90,40,200,.32)}
.send:hover{filter:brightness(1.08)}
.send:disabled{opacity:.35;cursor:not-allowed;box-shadow:none}
.composer-meta{max-width:760px;margin:6px auto 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 12px;color:#6f6c85;font-size:10.5px;line-height:1.5}
.composer-meta .warn{color:#a78bfa;flex:1 1 auto;min-width:0}
.float-btn{position:fixed;z-index:9998;right:16px;bottom:96px;height:46px;padding:0 18px;border-radius:999px;background:linear-gradient(145deg,#8b5cf6,#f97316);color:#fff;font-size:13px;font-weight:600;letter-spacing:.1px;display:flex;align-items:center;justify-content:center;gap:0;white-space:nowrap;border:1px solid rgba(233,213,255,.55);cursor:pointer;user-select:none;touch-action:none;box-shadow:0 8px 26px rgba(60,20,140,.5),0 0 0 4px rgba(139,92,246,.10);transition:transform .2s}
.float-btn b{font-size:14px;font-weight:800;letter-spacing:.5px;margin-left:4px}
.float-btn:hover{transform:translateY(-2px)}
.float-btn::after{content:"";position:absolute;top:3px;right:3px;width:9px;height:9px;border-radius:50%;background:#34d399;border:2px solid #0b0b14;box-shadow:0 0 0 1px rgba(0,0,0,.2)}
.qr-modal{position:fixed;inset:0;z-index:10000;display:none;align-items:center;justify-content:center;padding:18px;background:rgba(3,3,8,.88);backdrop-filter:blur(6px)}
.qr-modal.open{display:flex}
.qr-card{position:relative;width:min(92vw,430px);background:#10101a;border:1px solid rgba(139,92,246,.42);border-radius:24px;padding:26px 24px 22px;text-align:center;box-shadow:0 28px 80px rgba(0,0,0,.75);color:#f1eefb;animation:rise .22s ease both}
.qr-brand{font-size:11px;letter-spacing:.18em;color:#c4b5fd;font-weight:700}
.qr-card h2{font-size:26px;line-height:1.25;margin:9px 0 4px;font-weight:800;color:#fff}
.qr-company{font-size:13px;line-height:1.5;color:#9d9ab5;margin:0 0 16px}
.qr-img-wrap{width:min(76vw,300px);margin:0 auto;padding:9px;border:1px solid #2c2c40;border-radius:18px;background:#fff;box-shadow:0 8px 26px rgba(0,0,0,.4)}
.qr-img-wrap img{width:100%;height:auto;display:block;border-radius:10px}
.qr-tip{margin:15px 0 0;color:#e9d5ff;font-size:17px;font-weight:800}
.qr-sub{margin:6px 0 0;color:#8d8aa6;font-size:12px;line-height:1.6}
.qr-close{position:absolute;top:7px;right:9px;border:0;background:none;color:#8d8aa6;font-size:28px;line-height:1;padding:4px 8px;cursor:pointer}
.qr-close:hover{color:#fff}
@media(min-width:900px){
  body{padding:24px 0}
  .app{height:calc(100dvh - 48px);border-radius:20px;border:1px solid rgba(139,92,246,.22);box-shadow:0 30px 90px rgba(0,0,0,.7)}
  .float-btn{right:calc((100vw - 920px)/2 + 16px);bottom:120px}
}
@media(max-width:600px){
  .topbar{padding:9px 12px}
  .brand-mark{width:34px;height:34px}
  .brand-text b{font-size:13.5px}
  .brand-text span{font-size:9.5px;max-width:150px}
  .ghost{padding:7px 9px;font-size:10.5px}
  .welcome{padding:32px 18px 22px}
  .seal{width:68px;height:68px;margin-bottom:14px}
  .lead{font-size:13.5px;line-height:1.9}
  .suggest{grid-template-columns:1fr;gap:8px;margin-top:20px}
  .suggest button{font-size:12.5px;padding:11px 12px}
  .messages{padding:6px 12px 20px;gap:14px}
  .bubble{max-width:84%;font-size:14px;padding:11px 13px}
  .avatar{width:26px;height:26px}
  .composer{padding:8px 10px calc(8px + env(safe-area-inset-bottom))}
  .composer-inner{padding:6px 6px 6px 12px;border-radius:14px}
  .send{width:40px;height:40px}
  .composer-meta{font-size:9.5px;justify-content:center;gap:3px 8px}
  .composer-meta .hint{display:none}
  .float-btn{height:43px;padding:0 15px;font-size:12.5px;right:12px;bottom:92px}
  .float-btn b{font-size:13.5px}
}

/* ---- overseas additions: lead gate + contact channels ---- */
.contact-actions{display:grid;gap:10px;margin:16px 0 6px}
.contact-actions a,.contact-actions button{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:13px 16px;border-radius:14px;border:1px solid rgba(139,92,246,.38);background:rgba(139,92,246,.10);color:#f1eefb;font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;transition:transform .15s,background .15s}
.contact-actions a:hover,.contact-actions button:hover{background:rgba(139,92,246,.2);transform:translateY(-1px)}
.contact-actions .primary{background:linear-gradient(135deg,#8b5cf6,#f97316);border-color:rgba(233,213,255,.5)}
.contact-empty{font-size:12.5px;line-height:1.7;color:#9d9ab5;border:1px dashed rgba(139,92,246,.4);border-radius:12px;padding:12px;margin:14px 0 4px}
.gate{position:fixed;inset:0;z-index:10001;display:none;align-items:center;justify-content:center;padding:18px;background:rgba(4,4,10,.9);backdrop-filter:blur(8px)}
.gate.open{display:flex}
.gate-card{position:relative;width:min(94vw,420px);background:#10101a;border:1px solid rgba(139,92,246,.42);border-radius:24px;padding:26px 22px 20px;box-shadow:0 28px 80px rgba(0,0,0,.75);color:#f1eefb;animation:rise .22s ease both}
.gate-kicker{font-size:10px;letter-spacing:.2em;color:#c4b5fd;font-weight:800;margin:0 0 8px;text-align:center}
.gate-card h2{font-size:23px;line-height:1.3;margin:0 0 8px;text-align:center;color:#fff}
.gate-sub{font-size:13px;line-height:1.65;color:#9d9ab5;margin:0 0 18px;text-align:center}
.gate-field{margin-bottom:12px}
.gate-field label{display:block;font-size:11.5px;letter-spacing:.04em;color:#b9b5cf;margin-bottom:6px}
.gate-field input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(139,92,246,.32);background:#0b0b14;color:#fff;font-size:14px;outline:none}
.gate-field input:focus{border-color:rgba(196,181,253,.75);box-shadow:0 0 0 3px rgba(139,92,246,.16)}
.gate-submit{width:100%;margin-top:6px;padding:13px;border-radius:13px;border:0;background:linear-gradient(135deg,#8b5cf6,#f97316);color:#fff;font-size:15px;font-weight:700;cursor:pointer}
.gate-submit:disabled{opacity:.55;cursor:not-allowed}
.gate-note{font-size:10.5px;line-height:1.6;color:#6f6c85;margin:12px 0 0;text-align:center}
.gate-err{font-size:12px;color:#fca5a5;margin:8px 0 0;text-align:center;min-height:16px}
@media(max-width:600px){.qr-card{padding:22px 18px 18px}.gate-card{padding:22px 18px 18px}}
/* ---- multi-site themes ---- */
body.theme-canton::before{background:radial-gradient(900px 520px at 12% -10%,rgba(225,29,72,.30),transparent 60%),radial-gradient(760px 520px at 100% 105%,rgba(245,158,11,.18),transparent 62%),#05050a}
body.theme-canton .kicker,body.theme-canton .qr-brand{color:#fda4af}
body.theme-canton h1 em{background:linear-gradient(100deg,#fecdd3 0%,#fda4af 45%,#fbbf24 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
body.theme-canton .float-btn,body.theme-canton .send,body.theme-canton .gate-submit,body.theme-canton .contact-actions .primary{background:linear-gradient(145deg,#e11d48,#f59e0b)}
body.theme-canton .msg.user .bubble{background:linear-gradient(145deg,#be123c,#9f1239);box-shadow:0 6px 18px rgba(180,20,60,.32)}
body.theme-canton .privacy,body.theme-canton .composer-meta .warn{color:#fda4af}

body.theme-apec::before{background:radial-gradient(900px 520px at 12% -10%,rgba(37,99,235,.32),transparent 60%),radial-gradient(760px 520px at 100% 105%,rgba(6,182,212,.18),transparent 62%),#05060a}
body.theme-apec .kicker,body.theme-apec .qr-brand{color:#93c5fd}
body.theme-apec h1 em{background:linear-gradient(100deg,#dbeafe 0%,#93c5fd 45%,#67e8f9 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
body.theme-apec .float-btn,body.theme-apec .send,body.theme-apec .gate-submit,body.theme-apec .contact-actions .primary{background:linear-gradient(145deg,#2563eb,#06b6d4)}
body.theme-apec .msg.user .bubble{background:linear-gradient(145deg,#1d4ed8,#0e7490);box-shadow:0 6px 18px rgba(30,80,200,.32)}
body.theme-apec .privacy,body.theme-apec .composer-meta .warn{color:#93c5fd}

body.theme-growth::before{background:radial-gradient(900px 520px at 12% -10%,rgba(16,185,129,.28),transparent 60%),radial-gradient(760px 520px at 100% 105%,rgba(59,130,246,.16),transparent 62%),#05050a}
body.theme-growth .kicker,body.theme-growth .qr-brand{color:#6ee7b7}
body.theme-growth h1 em{background:linear-gradient(100deg,#a7f3d0 0%,#6ee7b7 45%,#93c5fd 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
body.theme-growth .float-btn,body.theme-growth .send,body.theme-growth .gate-submit,body.theme-growth .contact-actions .primary{background:linear-gradient(145deg,#10b981,#3b82f6)}
body.theme-growth .msg.user .bubble{background:linear-gradient(145deg,#047857,#1d4ed8);box-shadow:0 6px 18px rgba(20,140,110,.32)}
body.theme-growth .privacy,body.theme-growth .composer-meta .warn{color:#6ee7b7}