:root{font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:#16211d;background:#ededed;--wechat-bg: #e7ece8;--wechat-surface: rgba(246, 249, 246, .92);--wechat-line: rgba(15, 33, 24, .08);--tech-green: #1dd1a1;--tech-green-deep: #0d8f72;--tech-green-soft: #d9fff4}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{margin:0;min-height:100%}body{background:var(--wechat-bg);overscroll-behavior:none}button,input{font:inherit}.wechat-shell{height:100dvh;display:grid;grid-template-rows:auto 1fr auto;overflow:hidden;background:radial-gradient(circle at top,rgba(29,209,161,.08),transparent 28%),linear-gradient(180deg,#eef4f0,#e6ece8)}.wechat-header{position:sticky;top:0;z-index:10;padding:max(10px,env(safe-area-inset-top)) 12px 10px;background:var(--wechat-surface);border-bottom:1px solid var(--wechat-line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.wechat-header__top{display:grid;grid-template-columns:34px 1fr 34px;align-items:center}.nav-button{width:30px;height:30px;border:none;background:transparent;color:#111;font-size:23px;line-height:1}.nav-button--ghost{font-size:19px}.wechat-header__title{text-align:center}.wechat-header__title strong{display:block;font-size:17px;color:#111;font-weight:600}.wechat-header__title span{display:block;margin-top:3px;font-size:11px;color:#8a8a8a}.wechat-header__provider-switch{display:flex;justify-content:center;gap:8px;margin-top:10px}.provider-chip{border:1px solid rgba(0,0,0,.08);background:#fff;color:#5f5f5f;border-radius:999px;padding:6px 12px;font-size:12px;line-height:1}.provider-chip--active{background:linear-gradient(135deg,#111,#1d2b25);color:#fff;border-color:#111}.wechat-chat{min-height:0;overflow-y:auto;padding:14px 10px 18px;-webkit-overflow-scrolling:touch}.message-row{display:flex;align-items:flex-end;gap:8px;margin-bottom:12px}.message-row--user{justify-content:flex-end}.message-row--status{justify-content:center}.avatar{width:36px;height:36px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;font-size:12px;font-weight:700}.avatar--bot{background:linear-gradient(135deg,var(--tech-green),var(--tech-green-deep));color:#f3fffb;box-shadow:0 10px 20px #0d8f7233}.avatar--user{background:#95ec69;color:#1e3514}.status-tag{padding:6px 10px;border-radius:999px;background:#0000000f;color:gray;font-size:12px}.bubble{max-width:calc(100% - 70px);padding:10px 12px;border-radius:6px;position:relative;box-shadow:0 2px 6px #0000000d}.bubble p{margin:0;font-size:15px;line-height:1.55}.bubble--assistant{background:linear-gradient(135deg,var(--tech-green-soft),#f4fffb);color:#0f342a;border:1px solid rgba(29,209,161,.24)}.bubble--user{background:#95ec69;color:#182518}.voice-clip{width:min(220px,58vw);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;border:none;border-radius:18px;padding:10px 14px;box-shadow:inset 0 0 0 1px #0f21180d}.voice-clip--user{background:linear-gradient(135deg,#91f35d,#82eb53);color:#163511}.voice-clip--assistant{background:linear-gradient(135deg,#d7fff1,#c7fbeb);color:#0f3a2f}.voice-clip__icon{position:relative;width:18px;height:18px;flex-shrink:0}.voice-clip__dot{position:absolute;top:50%;left:0;width:6px;height:6px;border-radius:50%;background:currentColor;transform:translateY(-50%)}.voice-clip__arc{position:absolute;top:50%;left:4px;border:2px solid currentColor;border-left-color:transparent;border-bottom-color:transparent;border-radius:50%;transform:translateY(-50%) rotate(45deg)}.voice-clip__arc--near{width:10px;height:10px}.voice-clip__arc--far{width:16px;height:16px}.voice-clip__waveform{display:flex;align-items:center;justify-content:center;gap:3px;min-width:0}.voice-clip__bar{width:3px;border-radius:999px;background:currentColor;opacity:.48;transform-origin:center}.voice-clip--playing .voice-clip__bar{animation:voice-wave .9s ease-in-out infinite}.voice-clip--playing .voice-clip__bar:nth-child(2n){animation-delay:.12s}.voice-clip--playing .voice-clip__bar:nth-child(3n){animation-delay:.24s}.voice-clip__duration{font-size:13px;font-weight:700;letter-spacing:.02em}.result-card{margin-top:10px;padding-top:8px;border-top:1px solid rgba(0,0,0,.06);display:grid;gap:6px}.result-card__row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:8px 10px;border-radius:10px;background:#f5f5f5;font-size:12px;color:#5e5e5e}.result-card__row strong{color:#1d1d1d;font-size:12px}.wechat-toolbar{position:sticky;bottom:0;z-index:10;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:var(--wechat-surface);border-top:1px solid var(--wechat-line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);user-select:none;-webkit-user-select:none}.input-bar{display:grid;grid-template-columns:34px 1fr auto;gap:8px;align-items:center}.input-switch{width:34px;height:34px;border:none;background:transparent;color:#585858;font-size:21px}.hold-to-talk,.text-input{min-height:40px;border-radius:6px}.hold-to-talk{border:1px solid #d8d8d8;background:#fff;color:#222;font-size:15px;font-weight:500;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:none;-webkit-user-drag:none;outline:none}.hold-to-talk--active{background:linear-gradient(135deg,#dafdf4,#c8f6ea);border-color:#1dd1a180;color:#0f4f3e}.text-input{width:100%;border:1px solid #d9d9d9;background:#fff;padding:0 12px;font-size:15px;color:#1d1d1d;outline:none}.send-button{min-width:58px;min-height:40px;border:none;border-radius:6px;background:#d6d6d6;color:#fff;font-size:14px;font-weight:600;padding:0 14px}.send-button--active{background:#07c160}@keyframes voice-wave{0%,to{opacity:.35;transform:scaleY(.72)}50%{opacity:.95;transform:scaleY(1.18)}}