:root{
  --bg:#e9edf2;
  --chat-bg:#eceff3;
  --bubble:#ffffff;
  --bubble-mine:#95ec69;
  --text:#1a1a1a;
  --sub:#8a9099;
  --line:#dfe4ea;
  --accent:#c8a45c;
  --btn:#ffffff;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans Thai","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);
  font-size:15px;line-height:1.55;
}
#app{
  max-width:480px;margin:0 auto;min-height:100vh;
  background:var(--chat-bg);display:flex;flex-direction:column;
  position:relative;
}

/* 顶部栏 */
.topbar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.topbar-logo{width:34px;height:34px;border-radius:50%;object-fit:cover;background:#fff;border:1px solid var(--line)}
.topbar-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-mini{font-weight:600;font-size:15px;letter-spacing:.3px}
.topbar-sub{font-size:12px;color:var(--sub)}

/* 聊天区 */
.chat{
  flex:1;padding:14px 12px 8px;overflow-y:auto;
  display:flex;flex-direction:column;gap:12px;
  scroll-behavior:smooth;
}
.msg{display:flex;gap:8px;align-items:flex-start;animation:fadeIn .28s ease}
.msg .avatar{
  width:32px;height:32px;border-radius:50%;flex:0 0 32px;object-fit:cover;
  background:#fff;border:1px solid var(--line);
}
.msg .bubble{
  max-width:82%;background:var(--bubble);border-radius:4px 14px 14px 14px;
  padding:10px 13px;box-shadow:0 1px 2px rgba(0,0,0,.06);
  word-break:break-word;
}
.msg.sys{justify-content:center}
.msg.sys .bubble{
  background:rgba(0,0,0,.06);color:var(--sub);font-size:12px;
  border-radius:10px;padding:5px 12px;box-shadow:none;max-width:90%;text-align:center;
}

/* 气泡标题 */
.bubble h4{
  margin:0 0 7px;font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.4px;
}
/* 键值行 */
.kv{display:flex;justify-content:space-between;gap:12px;padding:3px 0;font-size:14px}
.kv .k{color:var(--sub);flex:0 0 auto}
.kv .v{text-align:right;font-weight:500}
.verify{margin-top:8px;font-size:13px;font-weight:600;color:#1a9c4a}
.verify.bad{color:#d33}
.bubble p{margin:6px 0;font-size:14px}
.bubble img.pic{width:100%;border-radius:8px;display:block;margin:8px 0 0}
.bubble .gallery{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:8px}
.bubble .gallery img{width:100%;height:110px;object-fit:cover;border-radius:8px}
.bubble .logo{max-width:150px;border-radius:8px;display:block;margin:8px 0 0;background:#fff}

/* 底部按钮区 */
.actions{
  position:sticky;bottom:0;z-index:20;
  display:flex;gap:10px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  flex-wrap:wrap;
}
.actions:empty{display:none}
.btn{
  flex:1;min-width:44%;padding:11px 14px;border-radius:22px;border:1px solid var(--line);
  background:var(--btn);font-size:14px;font-weight:600;color:#2b2b2b;
  cursor:pointer;transition:transform .1s,background .15s;
}
.btn:active{transform:scale(.97)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.skip{background:#f2f4f7;color:#666}

/* 入口浮层 */
.entry-overlay{
  position:fixed;inset:0;z-index:50;background:var(--chat-bg);
  display:none;align-items:center;justify-content:center;padding:24px;
}
.entry-overlay.active{display:flex}
.entry-card{
  width:100%;max-width:380px;background:#fff;border-radius:16px;
  padding:26px 22px;box-shadow:0 8px 30px rgba(0,0,0,.1);text-align:center;
}
.entry-card h1{font-size:19px;margin:0 0 8px}
.entry-card p{font-size:13px;color:var(--sub);margin:0 0 18px}
.entry-card .lbl{font-size:12px;color:var(--sub);display:block;margin-bottom:6px}
.entry-card input{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;text-align:center;margin-bottom:14px;outline:none;
}
.btn-primary{
  width:100%;padding:12px;border:none;border-radius:22px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
}

@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.typing .bubble{color:var(--sub);font-size:18px;letter-spacing:2px}