:root {
  --bg:#0a0e17; --bg2:#0c111d; --bg3:#070a12; --surf:#141c2e; --surf2:#1f2a44;
  --tx:#d7e3fb; --dim:#8b9ac0; --faint:#586089; --acc:#22d3ee; --acc2:#f246c5; --red:#ff4d6d; --bd:#1a2236;
}
* { box-sizing:border-box; margin:0; padding:0; -webkit-tap-highlight-color:transparent; }
html,body { height:100%; }
body { background:var(--bg); color:var(--tx); font-family:-apple-system,"Microsoft YaHei",system-ui,sans-serif; overflow:hidden; }
.hidden { display:none !important; }
#app { display:flex; flex-direction:column; height:100vh; height:100dvh; }

.bar { display:flex; align-items:center; gap:8px; padding:10px 12px; padding-top:max(10px,env(safe-area-inset-top)); background:var(--bg2); border-bottom:1px solid var(--bd); }
.ic { background:var(--bg3); border:1px solid var(--bd); color:var(--tx); width:38px; height:38px; border-radius:9px; font-size:16px; }
.ic.on { background:var(--acc); color:#04121a; }
.role { flex:1; background:var(--bg3); border:1px solid var(--acc); color:var(--tx); border-radius:9px; padding:9px; font-size:14px; }
.cost-badge-m { font-size:11px; color:var(--acc); white-space:nowrap; padding:0 4px; min-width:40px; text-align:right; }
.mic-btn-m { width:40px; height:40px; min-width:40px; border-radius:11px; background:var(--bg3); border:1px solid var(--bd); font-size:18px; color:var(--text-dim); display:flex; align-items:center; justify-content:center; cursor:pointer; }
.mic-btn-m:active { background:var(--surf); }
.mic-btn-m.recording { background:var(--red); color:#fff; border-color:var(--red); animation:mpulse 1.2s ease-in-out infinite; }
@keyframes mpulse { 0%,100%{box-shadow:0 0 0 0 rgba(255,77,109,.5)} 50%{box-shadow:0 0 0 8px rgba(255,77,109,0)} }
.img-chips { display:flex; flex-wrap:wrap; gap:6px; padding:0 0 8px 0; }
.img-chip { display:inline-flex; align-items:center; gap:4px; background:var(--bg3); border:1px solid var(--bd); border-radius:7px; padding:4px 8px; font-size:11px; color:var(--text-dim); }
.img-chip .x { cursor:pointer; color:var(--faint); font-size:13px; }
.img-chip .x:hover { color:var(--red); }

.messages { flex:1; overflow-y:auto; padding:16px 12px; -webkit-overflow-scrolling:touch; }
.empty { text-align:center; color:var(--faint); margin-top:22vh; }
.empty .lg { font-size:44px; color:var(--acc); text-shadow:0 0 22px var(--acc); margin-bottom:12px; }
.empty p { font-size:15px; line-height:1.8; } .empty span { font-size:13px; color:var(--faint); }

.msg { margin-bottom:16px; }
.msg .who { font-size:12px; color:var(--faint); margin-bottom:4px; }
.msg.u .bub { background:var(--surf); border:1px solid var(--surf2); border-radius:12px; padding:10px 12px; white-space:pre-wrap; }
.msg.a .content { font-size:15px; line-height:1.75; }
.content p { margin:0 0 9px; } .content p:last-child { margin:0; }
.content pre { background:var(--bg3); border:1px solid var(--bd); border-radius:8px; padding:10px; overflow-x:auto; font-size:13px; }
.content code { font-family:Consolas,monospace; }
.content :not(pre)>code { background:var(--bg3); padding:1px 5px; border-radius:4px; color:var(--acc); }
.content a { color:var(--acc); } .content ul,.content ol { margin:6px 0 9px 20px; }
.content img { max-width:100%; border-radius:8px; }
.tool { font-size:12px; color:var(--dim); background:var(--bg3); border:1px solid var(--bd); border-radius:7px; padding:5px 9px; margin:6px 0; }
.cursor::after { content:"▋"; color:var(--acc); animation:bk 1s steps(1) infinite; }
@keyframes bk { 50%{opacity:0;} }
.err { color:var(--red); font-size:13px; }

.composer { display:flex; align-items:flex-end; gap:8px; padding:10px 12px; padding-bottom:max(10px,env(safe-area-inset-bottom)); background:var(--bg2); border-top:1px solid var(--bd); }
#input { flex:1; resize:none; background:var(--bg3); border:1px solid var(--bd); color:var(--tx); border-radius:12px; padding:11px 13px; font-size:16px; max-height:140px; outline:none; font-family:inherit; }
#input:focus { border-color:var(--acc); }
.send,.stop { width:44px; height:44px; min-width:44px; border-radius:12px; font-size:18px; border:none; }
.send { background:linear-gradient(135deg,var(--acc),var(--acc2)); color:#04121a; }
.stop { background:var(--red); color:#fff; }

.drawer { position:fixed; inset:0; z-index:20; }
.drawer-bg { position:absolute; inset:0; background:rgba(0,0,0,.5); }
.drawer-panel { position:absolute; left:0; top:0; bottom:0; width:80%; max-width:320px; background:var(--bg2); border-right:1px solid var(--bd); display:flex; flex-direction:column; padding-top:max(0px,env(safe-area-inset-top)); }
.dh { padding:14px; font-size:13px; color:var(--faint); border-bottom:1px solid var(--bd); }
.slist { flex:1; overflow-y:auto; padding:8px; }
.sitem { padding:11px 12px; border-radius:9px; font-size:14px; color:var(--tx); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.sitem:active { background:var(--surf); }
.sitem .t { font-size:11px; color:var(--faint); }

/* ======== 设置面板 ======== */
.set-panel { right:0; left:auto; }
.set-body { flex:1; overflow-y:auto; padding:0 14px 20px; }
.set-section { font-size:11px; color:var(--acc); letter-spacing:2px; margin:18px 0 8px; padding-bottom:4px; border-bottom:1px solid var(--bd); }
.set-row { display:flex; align-items:center; justify-content:space-between; padding:10px 0; font-size:14px; color:var(--tx); gap:8px; }
.set-row span:first-child { flex-shrink:0; }
.set-row .dim { font-size:11px; color:var(--faint); text-align:right; word-break:break-all; }
.set-row select, .set-voice-row select { background:var(--bg3); border:1px solid var(--bd); color:var(--tx); border-radius:7px; padding:6px 8px; font-size:13px; outline:none; }
.set-row input[type=range] { flex:1; max-width:120px; accent-color:var(--acc); }
.set-row input[type=checkbox] { accent-color:var(--acc); width:18px; height:18px; }
.set-row em { font-style:normal; font-size:12px; color:var(--acc); margin-left:4px; }
.set-voice-row { display:flex; gap:4px; align-items:center; }
.set-voice-row select { flex:1; }
.set-about { flex-direction:column; align-items:flex-start; font-size:13px; line-height:1.8; }
.set-about .dim { font-size:11px; }

.auth { position:fixed; inset:0; z-index:30; background:var(--bg); display:flex; align-items:center; justify-content:center; padding:24px; }
.auth-box { text-align:center; max-width:340px; width:100%; }
.auth-box .lg { font-size:42px; color:var(--acc); text-shadow:0 0 22px var(--acc); margin-bottom:10px; }
.auth-box h3 { margin-bottom:8px; }
.auth-box p { color:var(--dim); font-size:13px; margin-bottom:14px; }
.auth-box input { width:100%; background:var(--bg3); border:1px solid var(--bd); color:var(--tx); border-radius:10px; padding:12px; font-size:15px; outline:none; margin-bottom:12px; }
.auth-box input:focus { border-color:var(--acc); }
.send-lg { width:100%; background:linear-gradient(135deg,var(--acc),var(--acc2)); color:#04121a; border:none; border-radius:10px; padding:12px; font-size:16px; font-weight:600; }
::-webkit-scrollbar { width:0; }

/* ======== 开屏页 V2 ======== */
.splash {
  position:fixed; inset:0; z-index:100;
  background:#06080f;
  display:flex; align-items:center; justify-content:center;
  animation: splashOut .6s cubic-bezier(.4,0,.2,1) forwards;
  animation-play-state: paused;
}
.splash.out { animation-play-state: running; }
@keyframes splashOut {
  0% { opacity:1; filter:blur(0); }
  100% { opacity:0; filter:blur(6px); pointer-events:none; }
}

/* 背景画布 */
#splashBg { position:absolute; inset:0; width:100%; height:100%; opacity:.7; }

/* 主布局 */
.splash-inner {
  position:relative; z-index:2; text-align:center;
  width:100%; max-width:340px; padding:0 28px;
  display:flex; flex-direction:column; align-items:center;
  gap:0;
}

/* ---- 冬 字主视觉 ---- */
.splash-dong {
  font-size:120px; font-weight:900; line-height:1;
  background: linear-gradient(180deg, #ffffff 0%, #c8d6e5 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
  filter: drop-shadow(0 0 28px rgba(34,211,238,.5)) drop-shadow(0 0 60px rgba(139,92,246,.3));
  margin-bottom: 18px;
  animation: dongFloat 4s ease-in-out infinite;
  font-family: "Microsoft YaHei UI","Microsoft YaHei","PingFang SC",sans-serif;
}
@keyframes dongFloat {
  0%,100% { transform:translateY(0); }
  50% { transform:translateY(-6px); }
}

/* ---- 标题 ---- */
.splash-brand {
  font-size:14px; font-weight:600; letter-spacing:6px; color:var(--acc);
  margin-bottom:28px; opacity:.85;
}

/* ---- 文案 ---- */
.splash-tagline {
  display:flex; flex-direction:column; gap:6px; margin-bottom:42px;
}
.tl1, .tl2 {
  font-size:16px; font-weight:400; color:var(--text-dim); line-height:1.8;
  letter-spacing:1.5px;
}
.tl1 { animation: fadeUp .7s .3s ease-out both; }
.tl1 + .tl1 { animation-delay: .45s; }
.tl3 {
  display:block; margin-top:2px;
  animation: fadeUp .7s .6s ease-out both;
}
.tl3 em {
  font-style:normal; font-size:28px; font-weight:800; letter-spacing:8px;
  background:linear-gradient(135deg, var(--acc), var(--acc2));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
  filter:drop-shadow(0 0 14px rgba(34,211,238,.4));
}

/* ---- 分割线 ---- */
.splash-divider {
  width:40px; height:1px;
  background:linear-gradient(90deg, transparent, var(--acc), transparent);
  margin-bottom:42px; opacity:.5;
}

/* ---- 按钮 ---- */
.splash-enter {
  width:100%; max-width:240px; padding:15px 0;
  background:transparent;
  border:1.5px solid var(--acc);
  color:var(--acc); font-size:15px; font-weight:600; letter-spacing:4px;
  border-radius:6px; cursor:pointer;
  transition: all .3s ease;
  position:relative; overflow:hidden;
}
.splash-enter::before {
  content:''; position:absolute; inset:0;
  background:linear-gradient(135deg, var(--acc), var(--acc2));
  opacity:0; transition:opacity .3s ease;
}
.splash-enter:hover::before, .splash-enter:active::before { opacity:.12; }
.splash-enter:active { transform:scale(.97); }
.btn-text { position:relative; z-index:1; }
.btn-glow { display:none; }

/* ---- 底部 ---- */
.splash-ver {
  margin-top:44px; font-size:11px; color:var(--faint); letter-spacing:3px;
  animation: fadeUp .7s .8s ease-out both;
}
@keyframes fadeUp {
  from { opacity:0; transform:translateY(12px); }
  to { opacity:1; transform:translateY(0); }
}