/* =========================================================
   觉醒 1919 · 历史回廊 — 蔡元培虚拟人物对话界面
   文件：css/persona.css
   约定：全部选择器以 cai- 前缀命名，不污染站点既有样式；
        视觉沿用主站 token（宣纸 / 朱印 / 暗底金字 / 衬线），
        同时自带 fallback 值，可脱离 style.css 独立生效。
   z-index：浮动入口 110、遮罩 129、面板 130（modal 为 120）
   ========================================================= */

/* ---------- 0. 局部 token（有主站变量时自动继承） ---------- */
.cai-fab,
.cai-backdrop,
.cai-panel,
.cai-story-chip{
  --cai-paper:var(--paper,#f4efe4);
  --cai-paper-2:var(--paper-2,#ece2cf);
  --cai-paper-3:var(--paper-3,#e2d4b9);
  --cai-ink:var(--ink,#211a13);
  --cai-ink-2:var(--ink-2,#4f4235);
  --cai-muted:var(--muted,#84725f);
  --cai-red:var(--red,#8c1f28);
  --cai-red-2:var(--red-2,#a92c35);
  --cai-red-deep:var(--red-deep,#5d141b);
  --cai-gold:var(--gold,#c8a15a);
  --cai-gold-2:var(--gold-2,#e2c489);
  --cai-gold-3:var(--gold-3,#8e713e);
  --cai-jade:var(--jade,#5f8b7b);
  --cai-serif:var(--serif,"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",Georgia,serif);
  --cai-kai:var(--kai,"STKaiti","KaiTi","Kaiti SC","FangSong","Songti SC",serif);
  --cai-sans:var(--sans,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif);
  --cai-noise:var(--noise,url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.86' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E"));
}

.cai-fab *,.cai-panel *,.cai-backdrop *{box-sizing:border-box}
.cai-panel [hidden],.cai-fab[hidden],.cai-backdrop[hidden]{display:none!important}
.cai-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 1. 右下角朱印入口 ---------- */
.cai-fab{
  position:fixed;
  right:calc(20px + env(safe-area-inset-right,0px));
  bottom:calc(22px + env(safe-area-inset-bottom,0px));
  z-index:110;
  display:flex;align-items:center;justify-content:center;
  width:58px;height:78px;padding:7px 0;
  color:#f7e8cc;
  background:linear-gradient(158deg,var(--cai-red-2) 0%,var(--cai-red) 58%,var(--cai-red-deep) 100%);
  border:1px solid rgba(226,196,137,.5);
  box-shadow:
    0 14px 32px rgba(60,12,16,.46),
    0 2px 0 rgba(255,235,205,.16) inset,
    0 0 0 4px rgba(140,31,40,.1);
  transform:rotate(-2deg);
  transition:transform .22s ease,box-shadow .22s ease,opacity .2s ease;
  cursor:pointer;
  font-family:var(--cai-kai);
  -webkit-tap-highlight-color:transparent;
}
.cai-fab::before{
  content:"";position:absolute;inset:4px;border:1px solid rgba(255,235,205,.28);pointer-events:none;
}
.cai-fab-seal{
  writing-mode:vertical-rl;
  font-size:15px;line-height:1.16;letter-spacing:.1em;
  text-shadow:0 1px 0 rgba(93,20,27,.6);
  transform:translateX(-.5px);
}
.cai-fab:hover{transform:rotate(-2deg) translateY(-3px);box-shadow:0 20px 40px rgba(60,12,16,.5),0 0 0 4px rgba(200,161,90,.16)}
.cai-fab:active{transform:rotate(-2deg) translateY(0)}
.cai-fab:focus-visible{outline:2px solid var(--cai-gold-2);outline-offset:4px}
/* 剧情态：浮动入口上移，避让「继续」主操作（Lead 修 RG-12） */
body.cai-game-playing .cai-fab{bottom:calc(104px + env(safe-area-inset-bottom,0px))}
@media (max-width:720px){
  body.cai-game-exploring .cai-fab,body.cai-game-playing .cai-fab{top:calc(78px + env(safe-area-inset-top,0px));bottom:auto;right:calc(14px + env(safe-area-inset-right,0px))}
}

/* ---------- 2. 遮罩（低于面板、高于浮动入口） ---------- */
.cai-backdrop{
  position:fixed;inset:0;z-index:129;
  background:radial-gradient(120% 100% at 100% 50%,rgba(18,12,8,.72),rgba(18,12,8,.5) 55%,rgba(18,12,8,.38));
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;transition:opacity .26s ease;
}
.cai-backdrop.is-open{opacity:1}

/* ---------- 3. 面板外壳：宣纸底 ---------- */
.cai-panel{
  position:fixed;top:0;right:0;bottom:0;z-index:130;
  display:flex;flex-direction:column;
  width:420px;max-width:100vw;
  height:100vh;height:100dvh;
  color:var(--cai-ink);
  background:
    radial-gradient(120% 60% at 100% 0%,rgba(255,252,245,.9),transparent 60%),
    linear-gradient(180deg,var(--cai-paper) 0%,var(--cai-paper-2) 100%);
  border-left:1px solid rgba(200,161,90,.55);
  box-shadow:-34px 0 90px rgba(0,0,0,.58);
  opacity:0;transform:translateX(20px);
  transition:opacity .28s ease,transform .28s cubic-bezier(.22,.7,.3,1);
  font-family:var(--cai-serif);
  isolation:isolate;
}
.cai-panel.is-open{opacity:1;transform:none}
.cai-panel::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:var(--cai-noise);background-size:260px 260px;
  opacity:.14;mix-blend-mode:multiply;
}
.cai-panel > *{position:relative;z-index:1;max-width:100%}
.cai-panel{overflow-x:hidden}
.cai-bubble,.cai-evidence-list,.cai-chip,.cai-msg-who,.cai-text{overflow-wrap:anywhere;word-break:break-word}

/* ---------- 4. 面板头：暗底金字 + 朱印 + 竖排标题 ---------- */
.cai-head{
  position:relative;flex:0 0 auto;display:flex;align-items:flex-start;gap:14px;
  padding:16px 16px 14px;
  color:var(--cai-paper);
  background:
    radial-gradient(120% 130% at 12% 0%,rgba(200,161,90,.2),transparent 58%),
    linear-gradient(168deg,#2c2014 0%,#1a110a 46%,#120c08 100%);
  border-bottom:1px solid rgba(200,161,90,.42);
}
.cai-head::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(226,196,137,.6),transparent);
}
.cai-head-seal{
  flex:0 0 auto;display:grid;place-items:center;
  width:40px;height:40px;margin-top:1px;
  font-family:var(--cai-kai);font-size:22px;line-height:1;
  color:#f7e8cc;background:linear-gradient(158deg,var(--cai-red-2),var(--cai-red));
  border:1px solid rgba(255,235,205,.42);
  box-shadow:0 0 0 1px rgba(93,20,27,.45),0 6px 16px rgba(0,0,0,.35);
  transform:rotate(-3deg);
}
.cai-head-text{flex:1 1 auto;min-width:0}
.cai-title{
  margin:0;
  font-family:var(--cai-kai);font-size:17px;font-weight:500;line-height:1.35;letter-spacing:.16em;
  color:var(--cai-gold-2);white-space:nowrap;
  text-shadow:0 1px 12px rgba(200,161,90,.25);
}
.cai-kicker{
  margin:4px 0 0;font-family:var(--cai-sans);font-size:9px;letter-spacing:.16em;
  color:rgba(244,239,228,.78);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.cai-head-note{
  margin:3px 0 0;
  font-size:11px;line-height:1.6;color:rgba(244,239,228,.66);
}
.cai-head-tools{margin-left:auto;display:flex;align-items:center;gap:6px;padding-top:1px;flex:0 0 auto}
.cai-badge{
  display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 9px;
  border:1px solid rgba(200,161,90,.4);border-radius:999px;
  background:rgba(15,9,5,.52);color:rgba(244,239,228,.86);
  font-family:var(--cai-sans);font-size:10px;letter-spacing:.08em;white-space:nowrap;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
  cursor:pointer;
}
.cai-badge:hover{border-color:var(--cai-gold);color:var(--cai-gold-2)}
.cai-badge-dot{
  width:5px;height:5px;border-radius:50%;background:var(--cai-muted);
  flex:0 0 auto;transition:background .2s ease,box-shadow .2s ease;
}
.cai-badge.is-online .cai-badge-dot{background:#7fb79f;box-shadow:0 0 7px rgba(127,183,159,.9)}
.cai-badge.is-offline .cai-badge-dot{background:var(--cai-gold)}
.cai-badge.is-warn .cai-badge-dot{background:#c8584f;box-shadow:0 0 7px rgba(200,88,79,.8)}
.cai-icon-btn{
  display:grid;place-items:center;width:30px;height:30px;
  border:1px solid rgba(244,239,228,.18);
  background:transparent;padding:0;appearance:none;-webkit-appearance:none;
  color:rgba(244,239,228,.82);
  font-family:var(--cai-sans);font-size:13px;line-height:1;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
  cursor:pointer;
}
.cai-icon-btn:hover{border-color:var(--cai-gold);color:var(--cai-gold-2);background:rgba(200,161,90,.08)}
.cai-close{font-size:19px;font-family:var(--cai-serif)}

/* ---------- 5. 设置区 ---------- */
.cai-settings{
  flex:0 0 auto;padding:13px 16px 14px;
  background:linear-gradient(180deg,rgba(244,239,228,.96),rgba(232,220,197,.94));
  border-bottom:1px solid rgba(33,26,19,.12);
  animation:cai-drop .26s ease both;
}
.cai-field{display:block;margin:0 0 10px}
.cai-field > span{
  display:block;margin-bottom:4px;
  font-family:var(--cai-sans);font-size:9.5px;letter-spacing:.16em;color:#6b5a44;
}
.cai-select,.cai-input{
  width:100%;min-height:34px;padding:6px 9px;
  font-family:var(--cai-serif);font-size:13px;color:var(--cai-ink);
  background:rgba(255,252,245,.92);
  border:1px solid rgba(33,26,19,.22);border-radius:0;
  outline:none;appearance:none;-webkit-appearance:none;
}
.cai-select:focus,.cai-input:focus{border-color:var(--cai-gold-3);box-shadow:0 0 0 2px rgba(200,161,90,.22)}
.cai-settings-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:2px}
.cai-btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:5px 11px;
  font-family:var(--cai-serif);font-size:12px;letter-spacing:.06em;
  color:var(--cai-ink-2);background:rgba(255,252,245,.7);
  border:1px solid rgba(33,26,19,.22);
  transition:background .18s ease,border-color .18s ease,color .18s ease;
  cursor:pointer;
}
.cai-btn:hover{border-color:var(--cai-red);color:var(--cai-red);background:rgba(140,31,40,.06)}
.cai-btn-solid{color:#f9ecd3;background:var(--cai-red);border-color:rgba(226,196,137,.4)}
.cai-btn-solid:hover{background:var(--cai-red-2);border-color:var(--cai-gold-2);color:#fff7e7}
.cai-btn-danger{color:var(--cai-red-deep);border-color:rgba(93,20,27,.3)}
.cai-btn-danger:hover{background:var(--cai-red);color:#f9ecd3;border-color:var(--cai-red)}
.cai-hint{
  margin:10px 0 0;font-family:var(--cai-sans);font-size:10px;line-height:1.75;color:#6b5a44;
}
.cai-hint.is-warn{color:var(--cai-red)}
.cai-hint.is-ok{color:#3f6d5c}

/* ---------- 6. 一次性提示条 ---------- */
.cai-notice{
  flex:0 0 auto;margin:0;padding:7px 16px;
  font-family:var(--cai-sans);font-size:11px;line-height:1.75;color:#6b5a44;
  background:rgba(33,26,19,.045);
  border-bottom:1px solid rgba(33,26,19,.1);
  animation:cai-drop .24s ease both;
}
.cai-notice.is-warn{color:var(--cai-red-deep);background:rgba(140,31,40,.06);border-bottom-color:rgba(140,31,40,.16)}
.cai-notice.is-ok{color:#3f6d5c;background:rgba(95,139,123,.07);border-bottom-color:rgba(95,139,123,.18)}

/* ---------- 7. 对话记录 ---------- */
.cai-log{
  flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;
  display:flex;flex-direction:column;gap:16px;
  padding:18px 16px 16px;
  scrollbar-width:thin;scrollbar-color:rgba(138,106,34,.4) transparent;
}
.cai-log::-webkit-scrollbar{width:6px}
.cai-log::-webkit-scrollbar-thumb{background:rgba(138,106,34,.3);border-radius:9px}
.cai-log:focus-visible{outline:2px solid var(--cai-gold-3);outline-offset:-2px}
.cai-greet,.cai-turns{display:flex;flex-direction:column;gap:16px}
.cai-greet:empty{display:none}
.cai-turns:empty{display:none}

.cai-msg{display:flex;gap:10px;align-items:flex-start;animation:cai-rise .34s ease both}
.cai-msg-icon{
  flex:0 0 auto;display:grid;place-items:center;width:30px;height:30px;margin-top:2px;
  font-family:var(--cai-kai);font-size:15px;line-height:1;color:#f7e8cc;
  background:linear-gradient(158deg,var(--cai-red-2),var(--cai-red));
  border:1px solid rgba(255,235,205,.36);
  box-shadow:0 3px 10px rgba(93,20,27,.24);
  transform:rotate(-2deg);
}
.cai-msg-main{min-width:0;flex:1 1 auto}
.cai-msg-who{
  display:flex;align-items:baseline;gap:7px;margin:0 0 5px;
  font-family:var(--cai-kai);font-size:13.5px;letter-spacing:.08em;color:#2b1f14;line-height:1.4;
}
.cai-msg-who em{font-style:normal;font-family:var(--cai-sans);font-size:9px;letter-spacing:.12em;color:#6b5a44}
.cai-bubble{
  position:relative;padding:12px 14px;
  background:rgba(255,252,245,.88);
  border:1px solid rgba(33,26,19,.1);
  border-left:2px solid rgba(140,31,40,.55);
  box-shadow:0 7px 20px rgba(60,44,24,.07);
}
.cai-text{
  margin:0;font-size:15px;line-height:1.95;letter-spacing:.02em;color:#241b12;
  white-space:pre-wrap;word-break:break-word;overflow-wrap:anywhere;
}
.cai-text[data-typing]::after{
  content:"▍";margin-left:2px;color:var(--cai-red);opacity:.75;
  animation:cai-blink .95s step-end infinite;
}
.cai-msg-user{justify-content:flex-end}
.cai-msg-user .cai-msg-main{max-width:88%;display:flex;flex-direction:column;align-items:flex-end}
.cai-msg-user .cai-msg-who{justify-content:flex-end;color:#6b5a44;font-family:var(--cai-sans);font-size:10px;letter-spacing:.12em}
.cai-msg-user .cai-bubble{
  background:linear-gradient(160deg,#2c2014,#1a110a);
  border:1px solid rgba(200,161,90,.24);border-right:2px solid rgba(200,161,90,.45);
  box-shadow:0 9px 22px rgba(20,13,8,.3);
}
.cai-msg-user .cai-text{color:#f7ecd6}
.cai-msg-reading .cai-bubble::after{
  content:"";position:absolute;inset:3px;border:1px solid rgba(200,161,90,.16);pointer-events:none;
}

/* 每轮底部：免责小字 + 拦截标记 + 史料依据折叠 */
.cai-turn-foot{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:8px;padding:0 2px;
}
.cai-disclaimer{font-family:var(--cai-sans);font-size:10px;letter-spacing:.12em;color:#6b5a44}
.cai-flag{
  padding:1px 6px;font-family:var(--cai-sans);font-size:9px;letter-spacing:.1em;
  color:var(--cai-red);background:rgba(140,31,40,.07);border:1px solid rgba(140,31,40,.32);
}
.cai-evidence{margin-left:auto;font-size:11px;color:#3b3025}
.cai-evidence > summary{
  list-style:none;cursor:pointer;
  font-family:var(--cai-sans);font-size:10px;letter-spacing:.1em;color:#6b5a44;
  border-bottom:1px dashed rgba(142,113,62,.55);padding:1px 0;
}
.cai-evidence > summary::-webkit-details-marker{display:none}
.cai-evidence > summary::before{content:"▸";margin-right:3px;color:rgba(142,113,62,.75)}
.cai-evidence[open] > summary::before{content:"▾"}
.cai-evidence-list{
  margin:6px 0 0;padding:8px 10px;display:grid;gap:5px;
  background:rgba(236,226,207,.64);border:1px solid rgba(33,26,19,.1);
  font-size:11px;line-height:1.7;color:#3b3025;
}
.cai-evidence-item b{font-weight:600;color:#2b1f14;letter-spacing:.02em}
.cai-evidence-item span{display:block;font-size:10px;color:#6b5a44;margin-top:1px}
.cai-evidence-empty{margin:5px 0 0;font-size:10.5px;line-height:1.7;color:#6b5a44}

/* 开场白选择 */
.cai-openings{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:-4px;padding-left:40px}
.cai-openings-label{font-family:var(--cai-sans);font-size:9px;letter-spacing:.14em;color:#6b5a44}
.cai-opening-btn{
  padding:3px 9px;font-family:var(--cai-kai);font-size:11px;letter-spacing:.06em;
  color:#3b3025;background:rgba(255,252,245,.55);
  border:1px solid rgba(33,26,19,.16);
  transition:background .16s ease,border-color .16s ease,color .16s ease;cursor:pointer;
}
.cai-opening-btn:hover{border-color:var(--cai-red);color:var(--cai-red);background:rgba(140,31,40,.06)}
.cai-opening-btn.is-active{color:#f7e8cc;background:var(--cai-red);border-color:var(--cai-red)}
.cai-opening-btn:focus-visible{outline:2px solid var(--cai-gold-3);outline-offset:2px}

/* 等待回应 */
.cai-typing{display:inline-flex;align-items:center;gap:5px;padding:4px 2px}
.cai-typing i{width:5px;height:5px;border-radius:50%;background:var(--cai-ink-2);opacity:.35;animation:cai-dot 1.15s ease-in-out infinite}
.cai-typing i:nth-child(2){animation-delay:.16s}
.cai-typing i:nth-child(3){animation-delay:.32s}

/* ---------- 8. 快捷问题 ---------- */
.cai-quick{
  position:relative;z-index:2;
  flex:0 0 auto;display:flex;flex-wrap:wrap;gap:6px;align-items:center;
  padding:12px 16px 3px;max-width:100%;
  border-top:1px solid rgba(33,26,19,.08);
  background:linear-gradient(180deg,rgba(236,226,207,.42),rgba(236,226,207,0));
}
.cai-quick:empty{display:none}
.cai-chip{
  flex:0 1 auto;white-space:nowrap;max-width:100%;
  padding:5px 10px;font-family:var(--cai-serif);font-size:11.5px;letter-spacing:.02em;
  color:#3b3025;background:rgba(236,226,207,.82);
  border:1px solid rgba(33,26,19,.14);
  transition:background .18s ease,border-color .18s ease,color .18s ease;cursor:pointer;
}
.cai-chip:hover{background:rgba(140,31,40,.07);border-color:rgba(140,31,40,.42);color:var(--cai-red)}
.cai-chip:disabled{opacity:.5;pointer-events:none}
.cai-chip:focus-visible{outline:2px solid var(--cai-gold-3);outline-offset:2px}

/* ---------- 9. 输入区 ---------- */
.cai-composer{
  flex:0 0 auto;display:flex;flex-direction:column;gap:7px;
  padding:10px 16px calc(12px + env(safe-area-inset-bottom,0px));
  border-top:1px solid rgba(33,26,19,.12);
  background:linear-gradient(180deg,rgba(244,239,228,.92),rgba(232,220,197,.97));
}
.cai-input-area{
  width:100%;min-height:56px;max-height:132px;resize:none;
  padding:9px 11px;
  font-family:var(--cai-serif);font-size:14px;line-height:1.75;color:var(--cai-ink);
  background:rgba(255,252,245,.94);
  border:1px solid rgba(33,26,19,.18);border-radius:0;outline:none;
}
.cai-input-area:focus{border-color:var(--cai-gold-3);box-shadow:0 0 0 2px rgba(200,161,90,.2)}
.cai-input-area::placeholder{color:rgba(107,90,68,.9)}
.cai-composer-foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
.cai-composer-hint{font-family:var(--cai-sans);font-size:9.5px;letter-spacing:.1em;color:#6b5a44}
.cai-send{
  display:inline-flex;align-items:center;gap:10px;min-height:38px;padding:0 16px;
  color:#f4efe4;background:var(--cai-ink);
  border:1px solid transparent;
  font-family:var(--cai-serif);font-size:12.5px;letter-spacing:.14em;
  transition:background .2s ease,color .2s ease;cursor:pointer;
}
.cai-send:hover{background:var(--cai-red)}
.cai-send[disabled]{opacity:.45;pointer-events:none}
.cai-send span{font-family:var(--cai-sans);font-size:14px}

/* ---------- 10. 剧情钩子：剧情内的「问校长」chip ---------- */
.cai-story-chip{
  display:inline-flex;align-items:center;gap:6px;
  margin:8px 0 10px;padding:3px 10px;
  font-family:var(--cai-sans);font-size:10.5px;letter-spacing:.1em;
  color:var(--cai-red);background:rgba(255,250,240,.68);
  border:1px solid rgba(140,31,40,.32);
  box-shadow:0 2px 8px rgba(60,44,24,.06);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
  cursor:pointer;
}
.cai-story-chip i{font-style:normal;font-family:var(--cai-kai);font-size:11.5px;line-height:1}
.cai-story-chip:hover{background:var(--cai-red);color:#f7e8cc;border-color:var(--cai-red)}
.cai-story-chip:focus-visible{outline:2px solid var(--cai-gold-3);outline-offset:2px}

/* ---------- 11. 动效 ---------- */
@keyframes cai-rise{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
@keyframes cai-drop{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
@keyframes cai-blink{50%{opacity:0}}
@keyframes cai-dot{0%,100%{opacity:.25;transform:translateY(0)}40%{opacity:.85;transform:translateY(-2px)}}

/* ---------- 12. 响应式 ---------- */
@media (max-width:720px){
  .cai-panel{left:0;right:0;width:100vw;max-width:none;border-left:0;border-top:1px solid rgba(200,161,90,.4)}
  .cai-log{padding:14px 14px 14px}
  .cai-quick{padding:10px 14px 2px}
  .cai-composer{padding:9px 14px calc(11px + env(safe-area-inset-bottom,0px))}
  .cai-head{padding:12px 14px 12px}
  .cai-fab{right:calc(14px + env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px))}
}
@media (max-width:430px){
  .cai-head{padding:11px 12px;gap:10px}
  .cai-head-seal{width:36px;height:36px;font-size:20px}
  .cai-title{font-size:16.5px;letter-spacing:.12em}
  .cai-kicker{font-size:8.5px;letter-spacing:.12em}
  .cai-head-note{display:none}
  .cai-badge{padding:0 7px;font-size:9.5px}
  .cai-icon-btn{width:28px;height:28px}
  .cai-head-tools [data-cai="settings"]{display:none}
  .cai-log{padding:13px 12px 13px;gap:14px}
  .cai-bubble{padding:11px 12px}
  .cai-text{font-size:14.5px}
  .cai-composer{padding:9px 12px calc(10px + env(safe-area-inset-bottom,0px))}
  .cai-quick{padding:9px 12px 2px}
  .cai-settings{padding:12px}
  .cai-openings{padding-left:0}
  .cai-evidence{margin-left:0}
}
@media (max-width:340px){
  .cai-composer-hint{font-size:8.5px;letter-spacing:.02em}
  .cai-kicker{display:none}
  .cai-title{font-size:16px}
  .cai-send{padding:0 12px}
  .cai-msg-icon{display:none}
  .cai-log{padding-left:10px;padding-right:10px}
  .cai-composer{padding-left:10px;padding-right:10px}
  .cai-quick{padding-left:10px;padding-right:10px}
}

/* ---------- 13. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  .cai-panel,.cai-backdrop,.cai-fab,.cai-msg,.cai-settings,.cai-notice{animation:none!important;transition:none!important}
  .cai-text[data-typing]::after{animation:none!important;content:""}
  .cai-typing i{animation:none!important;opacity:.55}
}