:root{color-scheme:light;--color-bg:#f4f7f8;--color-surface:#ffffff;--color-surface-soft:#f8fafb;--color-text:#17242b;--color-muted:#6b7a84;--color-subtle:#9aa6ad;--color-border:#dfe7eb;--color-primary:#0f5f73;--color-primary-strong:#094456;--color-primary-soft:#e5f4f4;--color-accent:#1f9d8a;--color-warning:#c77b22;--color-warning-soft:#fff4e4;--color-success:#287a55;--color-success-soft:#e9f6ef;--color-danger:#b94a48;--shadow-card:0 10px 26px rgba(20,52,61,0.08);--shadow-button:0 8px 18px rgba(15,95,115,0.18)}*{box-sizing:border-box}body,html{height:100%;margin:0;overflow:hidden}body{background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;letter-spacing:0}button,textarea{box-sizing:border-box;margin:0;font:inherit;line-height:normal;-webkit-tap-highlight-color:transparent}button{display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;text-align:center}textarea{width:100%;border:1px solid var(--color-border);border-radius:15px;background:var(--color-surface);color:var(--color-text);outline:none;resize:none}textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(15,95,115,.1)}h1,h2,p{margin:0}.chat-container{position:relative;display:flex;width:100%;max-width:100%;height:100vh;margin:0 auto;overflow:hidden;background:var(--color-bg);flex-direction:column}.navbar{position:fixed;z-index:100;top:0;right:0;left:0;display:flex;height:112px;align-items:center;justify-content:space-between;flex-shrink:0;padding:50px 20px 0;background:linear-gradient(180deg,#094456,#0f5f73);color:#ffffff}.back-btn{width:44px;height:44px;border:1px solid rgba(255,255,255,.24);border-radius:22px;background:rgba(255,255,255,.16);color:#ffffff;font-size:38px;font-weight:300;line-height:1;padding:0 0 4px}.navbar-title{flex:1 1;overflow:hidden;margin:0;font-size:20px;font-weight:700;text-align:center;text-overflow:ellipsis;white-space:nowrap}.navbar-placeholder{width:44px}.chat-content-wrapper{position:relative;display:flex;overflow:hidden;flex:1 1;flex-direction:column;margin-top:112px;padding-top:78px}.header{position:fixed;z-index:99;top:112px;right:0;left:0;box-sizing:border-box;background:var(--color-primary);box-shadow:0 8px 20px rgba(9,68,86,.1);color:#ffffff;padding:12px 18px 14px}.auto-read-control,.header{display:flex;align-items:center;justify-content:space-between}.auto-read-control{width:100%;min-height:52px;gap:14px}.auto-read-copy{display:flex;min-width:0;flex:1 1;flex-direction:column;gap:3px}.auto-read-title{color:#ffffff;font-size:17px;font-weight:700;line-height:1.3}.auto-read-subtitle{color:rgba(255,255,255,.78);font-size:13px;line-height:1.35}.switch-mock{position:relative;width:49px;height:30px;flex-shrink:0;border-radius:999px;background:rgba(255,255,255,.35);padding:2px}.switch-mock span{display:block;width:26px;height:26px;border-radius:50%;background:#ffffff;box-shadow:0 2px 6px rgba(0,0,0,.18);transition:transform .2s ease}.switch-on{background:var(--color-accent)}.switch-on span{transform:translateX(19px)}.chat-content{width:100%;flex:1 1;overflow-y:auto;padding:20px 18px 156px}.message{display:flex;align-items:flex-end;margin-bottom:18px}.message-ai{flex-direction:row}.message-user{flex-direction:row-reverse}.message-avatar{display:flex;width:38px;height:38px;align-items:center;justify-content:center;flex-shrink:0;box-sizing:border-box;border-radius:50%;margin:0 8px;font-size:13px;font-weight:800}.message-avatar-ai{border:1px solid #bfdfdf;background:linear-gradient(180deg,#eaf8f8,#d9f0ee);box-shadow:0 8px 18px rgba(15,95,115,.1);color:var(--color-primary)}.message-avatar-user{border:1px solid var(--color-primary);background:var(--color-primary);box-shadow:0 6px 14px rgba(15,95,115,.18);color:#ffffff}.ai-avatar-core{display:flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:15px;background:rgba(255,255,255,.72);font-size:12px;font-weight:900}.message-content{display:flex;max-width:82%;flex-direction:column}.message-ai .message-content{align-items:flex-start}.message-user .message-content{align-items:flex-end}.message-text-wrapper{display:flex;max-width:100%;align-items:flex-end;gap:8px}.message-ai .message-text-wrapper{flex-direction:row}.message-user .message-text-wrapper{flex-direction:row-reverse}.message-bubble{display:block;min-height:20px;border:1px solid var(--color-border);border-radius:14px;background:#ffffff;box-shadow:0 8px 20px rgba(20,52,61,.06);color:var(--color-text);flex:0 1 auto;font-size:17px;line-height:1.64;padding:15px 16px;word-break:break-word}.message-user .message-bubble{border-color:var(--color-primary);background:var(--color-primary);box-shadow:0 8px 18px rgba(15,95,115,.16);color:#ffffff}.message-text{display:inline;color:inherit;font-size:inherit;line-height:inherit}.message-time{display:block;margin-top:6px;color:var(--color-subtle);font-size:14px}.voice-play-btn{display:flex;width:34px;height:34px;align-items:center;justify-content:center;flex-shrink:0;border-radius:50%;background:var(--color-primary-soft);color:var(--color-primary);font-size:14px;padding:0}.context-card{margin:0 46px 18px;border:1px solid var(--color-border);border-radius:14px;background:#ffffff;box-shadow:0 8px 20px rgba(20,52,61,.06);padding:14px}.context-title{margin-bottom:10px;color:var(--color-primary);font-size:15px;font-weight:700}.context-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:9px;gap:9px}.context-grid div{min-width:0;border-radius:12px;background:var(--color-surface-soft);padding:9px 10px}.context-grid span{display:block;margin-bottom:3px;color:var(--color-muted);font-size:12px;font-weight:600}.context-grid strong{display:block;overflow:hidden;color:var(--color-text);font-size:14px;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.input-area{position:fixed;z-index:100;right:0;bottom:0;left:0;border-top:1px solid var(--color-border);background:rgba(255,255,255,.98);box-shadow:0 -8px 20px rgba(20,52,61,.07);padding:8px 14px calc(8px + env(safe-area-inset-bottom))}.input-group{display:flex;align-items:stretch;flex-direction:column;gap:7px}.input-textarea{width:100%;min-height:42px;max-height:180px;border:1px solid var(--color-border);border-radius:15px;background:#ffffff;box-sizing:border-box;color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:17px;line-height:1.5;padding:10px 14px}.button-row{display:flex;align-items:center;gap:7px}.btn-voice-hold{flex:1 1;border-radius:15px;box-shadow:0 5px 14px rgba(15,95,115,.14);padding:0}.btn-send,.btn-voice-hold{display:flex;height:46px;align-items:center;justify-content:center;background:var(--color-primary);color:#ffffff;font-size:16px;font-weight:700;gap:5px}.btn-send{flex-shrink:0;border:1px solid var(--color-primary);border-radius:15px;box-shadow:0 5px 14px rgba(15,95,115,.16);padding:0 17px;white-space:nowrap}.button-icon{display:inline-flex;font-size:14px;transform:translateY(-1px)}.state-screen{display:flex;min-height:calc(100vh - 190px);align-items:center;justify-content:center;padding:18px}.state-card{width:100%;max-width:350px;border:1px solid var(--color-border);border-radius:14px;background:#ffffff;box-shadow:var(--shadow-card);padding:28px 20px;text-align:center}.state-card h2{margin:12px 0 8px;color:var(--color-text);font-size:18px;font-weight:700}.state-card p{color:var(--color-muted);font-size:15px;line-height:1.6}.state-card-warning h2{color:var(--color-danger)}.loading-icon{width:34px;height:34px;border:4px solid rgba(15,95,115,.12);border-top:4px solid var(--color-primary);animation:spin 1s linear infinite}.info-icon,.loading-icon{margin:0 auto;border-radius:50%}.info-icon{display:flex;width:40px;height:40px;align-items:center;justify-content:center;background:#fff0f0;color:var(--color-danger);font-size:24px;font-weight:800}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@media (min-width:560px){body{display:flex;justify-content:center;background:linear-gradient(180deg,rgba(244,247,248,.96),rgba(228,237,240,.92)),radial-gradient(circle at 50% 0,rgba(15,95,115,.12),transparent 32rem)}.chat-container{max-width:430px;box-shadow:0 24px 60px rgba(20,52,61,.16)}.header,.input-area,.navbar{left:50%;width:430px;transform:translateX(-50%)}}@media (max-width:390px){.context-grid{grid-template-columns:1fr}.context-card{margin-right:46px;margin-left:46px}.navbar-title{font-size:18px}}