/* 护动 · 运动康复工作台 — 纯白主题设计系统
   排版纪律参考 moonshot.cn：字重分层、正字距、极大留白、圆角 20 输入面、胶囊描边按钮、滚动渐显。
   配色沿用已批准的「D-纯白极简」方向（design/ui-concepts/D-prompt.md）：纯白底、近黑墨色分层、无彩色装饰。 */

/* ============ 1. 设计令牌 ============ */
:root{
  color-scheme:light;

  /* 墨色分层 — 对应 moonshot 的白色透明度阶梯，反相到浅底 */
  --paper:#ffffff;
  --ink:#101112;
  --ink-body:rgba(16,17,18,.86);
  --ink-2:rgba(16,17,18,.58);
  --ink-3:rgba(16,17,18,.40);
  --ink-4:rgba(16,17,18,.24);

  /* 线与面 */
  --line:rgba(16,17,18,.13);
  --line-soft:rgba(16,17,18,.075);
  --surface:rgba(16,17,18,.028);
  --surface-2:rgba(16,17,18,.05);
  --surface-3:rgba(16,17,18,.078);

  /* 临床语义色（去饱和，仅用于状态，不作装饰） */
  --ok:#3d6b52;
  --ok-bg:rgba(61,107,82,.07);
  --warn:#7d5f1c;
  --warn-bg:rgba(125,95,28,.07);
  --stop:#8a4040;
  --stop-bg:rgba(138,64,64,.07);

  /* 字体 */
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",微软雅黑,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --track:.01em;          /* moonshot 0.15008px @16px */
  --track-wide:.14em;

  /* 圆角 */
  --r-xs:8px;             /* 导航项，moonshot 原值 */
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;            /* 输入面 / 卡片，moonshot chatInput 原值 */
  --r-xl:26px;
  --r-pill:999px;
  --r-send:15px;          /* 30px 发送钮，moonshot 原值 */

  /* 间距 */
  --nav-h:72px;
  --gap:clamp(20px,2.4vw,32px);
  --section-y:clamp(72px,9vw,132px);
  --shell:min(1160px,100% - 8vw);
  --narrow:min(780px,100% - 8vw);

  /* 动效 */
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:.18s;
  --t-mid:.34s;
  --t-slow:.62s;
}

/* ============ 2. 基础 ============ */
*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink-body);
  font-family:var(--font);
  font-size:16px;
  line-height:1.62;
  letter-spacing:var(--track);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:500;letter-spacing:var(--track)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}

button,input,select,textarea{
  font:inherit;
  letter-spacing:inherit;
  color:inherit;
  margin:0;
}
button{background:none;border:0;padding:0;cursor:pointer}
button:disabled{cursor:not-allowed}
textarea{resize:vertical}

:focus-visible{
  outline:2px solid var(--ink);
  outline-offset:3px;
  border-radius:4px;
}

::selection{background:rgba(16,17,18,.1)}

/* 细滚动条，减少视觉噪音 */
*{scrollbar-width:thin;scrollbar-color:var(--surface-3) transparent}
*::-webkit-scrollbar{width:9px;height:9px}
*::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:9px;border:2px solid var(--paper)}
*::-webkit-scrollbar-track{background:transparent}

/* ============ 3. 排版层级 ============ */
/* 参考 moonshot：大标题极轻字重，区块标题中等字重，正文常规，标签小字宽字距 */
.display{
  font-size:clamp(38px,5.2vw,68px);
  font-weight:300;
  line-height:1.2;
  letter-spacing:-.022em;
  color:var(--ink);
}
.display em{font-style:normal;font-weight:400}
.display .accent{color:var(--ink-2)}

.h2{
  font-size:clamp(25px,2.6vw,32px);
  font-weight:500;
  line-height:1.32;
  letter-spacing:var(--track);
}
.h3{font-size:17px;font-weight:500;line-height:1.5}

.lead{
  font-size:clamp(15px,1.15vw,17px);
  line-height:1.78;
  color:var(--ink-2);
  max-width:56ch;
}

.overline{
  display:block;
  font-size:11.5px;
  font-weight:500;
  line-height:1.4;
  letter-spacing:var(--track-wide);
  text-transform:uppercase;
  color:var(--ink-3);
}

.small{font-size:14px;line-height:1.66;color:var(--ink-2)}
.tiny{font-size:12.5px;line-height:1.6;color:var(--ink-3)}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:0}

/* ============ 4. 组件：按钮 ============ */
/* 胶囊描边 — moonshot CTA：999px 圆角 + 1px 描边 + fw450 + 12/20 内距 */
.pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:15px;
  font-weight:450;
  line-height:1.5;
  color:var(--ink-body);
  background:transparent;
  transition:background var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
  white-space:nowrap;
}
.pill:hover{background:var(--surface);border-color:var(--ink-4)}
.pill:active{transform:scale(.985)}
.pill:disabled{opacity:.42;pointer-events:none}

.pill-solid{
  background:var(--ink);
  border-color:var(--ink);
  color:#fff;
}
.pill-solid:hover{background:#000;border-color:#000;color:#fff}

.pill-sm{padding:8px 15px;font-size:13.5px}

/* 安静的文字按钮 — 导航项，moonshot：fw380 / radius 8 / pad 4x8 */
.quiet{
  padding:6px 10px;
  border-radius:var(--r-xs);
  font-size:14.5px;
  font-weight:380;
  color:var(--ink-2);
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.quiet:hover{background:var(--surface-2);color:var(--ink)}
.quiet:disabled{opacity:.4;pointer-events:none}

/* 兼容旧类名：header 里的主 CTA */
.outline{
  padding:9px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:14.5px;
  font-weight:450;
  color:var(--ink-body);
  transition:background var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.outline:hover{background:var(--surface);border-color:var(--ink-4)}

/* 证据/操作小按钮（search.js 与 settings.js 生成） */
.source-open{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--paper);
  font-size:13px;
  font-weight:450;
  color:var(--ink-2);
  cursor:pointer;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease);
}
.source-open:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.source-open:disabled{opacity:.45;pointer-events:none}

/* ============ 5. 顶栏（sticky 72px + 毛玻璃，浅色版 moonshot nav） ============ */
header{
  position:sticky;
  top:0;
  z-index:60;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 clamp(20px,4vw,44px);
  background:rgba(255,255,255,.76);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-mid) var(--ease),background var(--t-mid) var(--ease);
}
header.scrolled{border-bottom-color:var(--line-soft);background:rgba(255,255,255,.9)}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  padding:6px 10px 6px 6px;
  margin-left:-6px;
  border-radius:var(--r-xs);
  transition:background var(--t-fast) var(--ease);
}
.brand:hover{background:var(--surface-2)}
.brand img{width:52px;height:26px;object-fit:contain}
.brand-text{display:flex;flex-direction:column;align-items:flex-start;line-height:1.2}
.brand-text b{font-size:15.5px;font-weight:500;color:var(--ink);letter-spacing:.02em}
.brand-text span{font-size:10.5px;font-weight:400;color:var(--ink-3);letter-spacing:.06em}

.nav{display:flex;align-items:center;gap:4px}

/* settings.js 注入的齿轮按钮 */
.settings-gear{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  padding:0;
  margin-left:4px;
  border-radius:var(--r-xs);
  color:var(--ink-3);
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),transform var(--t-mid) var(--ease);
}
.settings-gear svg{width:19px;height:19px}
.settings-gear:hover{background:var(--surface-2);color:var(--ink);transform:rotate(24deg)}

/* ============ 6. 屏幕切换 ============ */
.screen{min-height:calc(100svh - var(--nav-h))}
.screen[hidden]{display:none}

main{position:relative}

/* ============ 7. 落地页 ============ */
.shell{width:var(--shell);margin-inline:auto}
.narrow{width:var(--narrow);margin-inline:auto}

/* --- Hero：全视口居中沉浸（moonshot 结构） --- */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  padding:calc(var(--nav-h) + 48px) 24px 96px;
}
/* 中央白色面纱，保证文字对比 */
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:
    radial-gradient(56% 44% at 50% 42%,rgba(255,255,255,.9),rgba(255,255,255,.5) 56%,rgba(255,255,255,0) 82%),
    linear-gradient(to bottom,#fff 0,rgba(255,255,255,0) 14%,rgba(255,255,255,0) 84%,#fff 100%);
}
.hero-content{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  width:min(820px,100%);
}
.hero-content .overline{margin-bottom:30px}
.hero-content .display{
  font-size:clamp(42px,6.2vw,82px);
  margin:0 0 26px;
}
.hero-sub{
  font-size:clamp(16px,1.35vw,19px);
  font-weight:305;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--ink-2);
  max-width:44ch;
  margin:0 auto 34px;
}
.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:0}

/* --- Hero 对话框：moonshot 签名元素（毛玻璃 + 20px 圆角 + 圆形发送钮） --- */
.hero-composer{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  width:100%;
  max-width:640px;
  margin:0 auto 22px;
  padding:16px 16px 11px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.7);
  -webkit-backdrop-filter:saturate(180%) blur(23px);
  backdrop-filter:saturate(180%) blur(23px);
  box-shadow:0 20px 46px -32px rgba(16,17,18,.42);
  transition:border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),
             background var(--t-mid) var(--ease);
}
.hero-composer:focus-within{
  border-color:var(--ink-4);
  background:#fff;
  box-shadow:0 24px 56px -28px rgba(16,17,18,.44);
}
#heroQuestion{
  width:100%;
  min-height:50px;
  max-height:150px;
  padding:4px 4px 0;
  border:0;
  background:transparent;
  font-size:17px;
  font-weight:400;
  line-height:1.6;
  color:var(--ink);
  outline:none;
  resize:none;
}
#heroQuestion::placeholder{color:var(--ink-4)}
.hero-composer-bar{display:flex;align-items:center;justify-content:space-between;gap:12px}
.hero-composer-hint{font-size:11.5px;color:var(--ink-3);letter-spacing:.04em}

/* --- Hero 背景：解剖列车图版做全幅发光底 + 经线流光 --- */
.hero-bg{
  position:absolute;
  inset:0;
  z-index:0;
  display:flex;
  align-items:center;
  justify-content:center;
  pointer-events:none;
  will-change:transform;
}
.hero-bg-inner{
  position:relative;
  height:100%;
  max-height:1150px;
  aspect-ratio:1000/1183;
  animation:artFloat 13s ease-in-out infinite;
}
@keyframes artFloat{
  0%,100%{transform:translateY(0) scale(1)}
  50%{transform:translateY(-16px) scale(1.015)}
}
.at-figure{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:contain;
  object-position:center;
  opacity:.46;
  mix-blend-mode:multiply;
  -webkit-mask-image:radial-gradient(72% 68% at 50% 46%,#000 42%,transparent 88%);
  mask-image:radial-gradient(72% 68% at 50% 46%,#000 42%,transparent 88%);
}
.meridian-trace{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  overflow:visible;
}
/* 经线底描：缓慢画出后常驻 */
.mt{
  stroke:var(--c);
  stroke-width:2.2;
  opacity:.55;
  stroke-dasharray:100;
  stroke-dashoffset:100;
  animation:mtDraw 2.6s var(--ease) forwards;
}
.mt:nth-child(2){animation-delay:.22s}
.mt:nth-child(3){animation-delay:.44s}
.mt:nth-child(4){animation-delay:.66s}
.mt:nth-child(5){animation-delay:.88s}
.mt:nth-child(6){animation-delay:1.1s}
@keyframes mtDraw{to{stroke-dashoffset:0}}
/* 经线流光：一段高光沿筋膜线循环行进，带辉光 */
.mtc{
  stroke:var(--c);
  stroke-width:3.2;
  stroke-dasharray:6 94;
  stroke-dashoffset:100;
  opacity:0;
  animation:mtRun 5.6s linear infinite;
}
.mtc:nth-child(2){animation-delay:.7s}
.mtc:nth-child(3){animation-delay:1.4s}
.mtc:nth-child(4){animation-delay:2.1s}
.mtc:nth-child(5){animation-delay:2.8s}
.mtc:nth-child(6){animation-delay:3.5s}
@keyframes mtRun{
  0%{stroke-dashoffset:100;opacity:0}
  6%{opacity:.9}
  52%{opacity:.9}
  66%{stroke-dashoffset:0;opacity:0}
  100%{stroke-dashoffset:0;opacity:0}
}
.anatomy-credit{
  position:absolute;
  right:0;bottom:2px;
  z-index:3;
  font-size:10px;
  color:var(--ink-4);
  letter-spacing:.04em;
  transition:color var(--t-fast) var(--ease);
}
.anatomy-credit:hover{color:var(--ink-2)}

#landing.paused .hero-bg-inner,
#landing.paused .mt,
#landing.paused .mtc{animation-play-state:paused}
#landing.leaving{opacity:0;transform:translateY(-8px);transition:opacity .3s var(--ease),transform .3s var(--ease)}

/* 底部滚动提示 */
.hero-scroll{
  position:absolute;
  left:50%;
  bottom:26px;
  z-index:2;
  width:1px;
  height:52px;
  transform:translateX(-50%);
  background:var(--line);
  overflow:hidden;
}
.hero-scroll i{
  position:absolute;
  left:0;top:0;
  width:1px;height:16px;
  background:var(--ink-2);
  animation:scrollHint 2.2s var(--ease) infinite;
}
@keyframes scrollHint{
  0%{transform:translateY(-18px);opacity:0}
  30%{opacity:1}
  100%{transform:translateY(56px);opacity:0}
}

/* --- 全幅图版区块（moonshot 大图时刻） --- */
.band-plate{border-top:1px solid var(--line-soft)}
.plate{
  position:relative;
  margin:0;
  height:min(92svh,880px);
  overflow:hidden;
  background:var(--paper);
}
.plate img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:contain;
  object-position:center 42%;
  mix-blend-mode:multiply;
}
.plate::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(to top,#fff 2%,rgba(255,255,255,.72) 22%,rgba(255,255,255,0) 48%),
    linear-gradient(to bottom,#fff 0,rgba(255,255,255,0) 12%),
    linear-gradient(to right,#fff 0,rgba(255,255,255,0) 18%,rgba(255,255,255,0) 82%,#fff 100%);
}
.plate figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  z-index:2;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:14px;
  padding:clamp(28px,5vw,68px) clamp(20px,7vw,96px);
}
.plate .h2{max-width:20ch}
.plate .lead{max-width:46ch}

/* --- 区块通用 --- */
.band{padding:var(--section-y) 0;border-top:1px solid var(--line-soft)}
.band-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px 40px;
  margin-bottom:clamp(34px,4vw,56px);
}
.band-head .lead{margin-top:14px}
.band-link{
  font-size:14px;
  font-weight:450;
  color:var(--ink-2);
  padding:6px 0;
  border-bottom:1px solid var(--line);
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.band-link:hover{color:var(--ink);border-color:var(--ink)}

/* --- 能力卡片行（moonshot 研究卡片：描边 + 20px 圆角 + 悬停微抬） --- */
.card-row{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(268px,1fr));
  gap:clamp(14px,1.4vw,20px);
}
.card-visual{
  position:relative;
  height:88px;
  margin:-4px -4px 6px;
  overflow:hidden;
}
.card-visual::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(120% 130% at 6% 128%,var(--a),transparent 58%),
    radial-gradient(100% 120% at 96% -20%,var(--b),transparent 52%);
  opacity:.13;
}
.card-visual svg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  opacity:.6;
}
.card-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,#fff 4%,transparent 62%);
}
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:clamp(22px,2.2vw,30px);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  background:var(--paper);
  overflow:hidden;
  transition:border-color var(--t-mid) var(--ease),transform var(--t-mid) var(--ease),
             box-shadow var(--t-mid) var(--ease);
}
.card:hover{
  border-color:var(--line);
  transform:translateY(-3px);
  box-shadow:0 14px 38px -22px rgba(16,17,18,.3);
}
.card-index{
  font-family:var(--mono);
  font-size:11px;
  color:var(--ink-4);
  letter-spacing:.06em;
}
.card h3{font-size:18px;font-weight:500;line-height:1.45}
.card p{font-size:14.5px;line-height:1.76;color:var(--ink-2)}
.card-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.03em;
}

/* --- 流程步骤（发丝分隔线，不用卡片堆叠） --- */
.steps{border-top:1px solid var(--line-soft)}
.step-row{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) minmax(0,.72fr);
  gap:clamp(16px,2.4vw,40px);
  align-items:start;
  padding:clamp(22px,2.6vw,32px) 0;
  border-bottom:1px solid var(--line-soft);
  transition:background var(--t-mid) var(--ease);
}
.step-row:hover{background:var(--surface)}
.step-row.active{background:var(--surface)}
.step-row.active .step-num{color:var(--ink)}
.step-row.active .step-side b{color:var(--ink)}
.step-num{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-4);
  padding-top:5px;
  letter-spacing:.06em;
}
.step-row h3{font-size:clamp(17px,1.5vw,20px);font-weight:450;line-height:1.5;margin-bottom:8px}
.step-row p{font-size:14.5px;line-height:1.76;color:var(--ink-2)}
.step-side{
  font-size:12.5px;
  line-height:1.7;
  color:var(--ink-3);
  padding-top:5px;
}
.step-side b{display:block;font-weight:500;color:var(--ink-2);font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px}

/* --- 边界声明：已开放 / 尚未开放 --- */
.assure{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(288px,1fr));
  gap:clamp(14px,1.4vw,20px);
}
.assure-col{
  padding:clamp(22px,2.2vw,30px);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
}
.assure-col.open{background:var(--surface)}
.assure-col h3{
  font-size:13px;
  font-weight:500;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin-bottom:20px;
}
.assure-col ul{display:flex;flex-direction:column;gap:13px}
.assure-col li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  line-height:1.66;
  color:var(--ink-body);
}
.assure-col li::before{
  content:"";
  position:absolute;
  left:2px;top:.62em;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--ink-4);
}
.assure-col.open li::before{background:var(--ink)}
.assure-col li small{display:block;font-size:12.5px;color:var(--ink-3);margin-top:2px;line-height:1.6}

/* ============ 8. 工作区 ============ */
#workspace{
  padding:clamp(34px,5vw,72px) 0 clamp(40px,5vw,72px);
}
.workspace-inner{
  display:flex;
  flex-direction:column;
  width:min(860px,100% - 8vw);
  margin-inline:auto;
}

#workTitle{
  font-size:clamp(25px,2.9vw,33px);
  font-weight:400;
  line-height:1.38;
  letter-spacing:-.01em;
  margin:16px 0 12px;
  text-align:center;
}
.workspace-inner>.overline{text-align:center}
.workspace-inner .sub{
  text-align:center;
  font-size:14.5px;
  line-height:1.72;
  color:var(--ink-2);
  margin-bottom:22px;
  max-width:52ch;
  margin-inline:auto;
}

/* 知识库状态：细条，居中 */
#kbStatus{
  text-align:center;
  font-size:12.5px;
  color:var(--ink-3);
  font-variant-numeric:tabular-nums;
  margin-bottom:26px;
  letter-spacing:.02em;
}

/* --- Composer：moonshot 签名元素（20px 圆角 + 内嵌圆形发送钮 + 18px 输入） --- */
.composer{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:16px 16px 12px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:rgba(16,17,18,.022);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  transition:border-color var(--t-mid) var(--ease),background var(--t-mid) var(--ease),
             box-shadow var(--t-mid) var(--ease);
}
.composer:focus-within{
  border-color:var(--ink-4);
  background:var(--paper);
  box-shadow:0 10px 34px -20px rgba(16,17,18,.34);
}
.composer label[hidden]{display:none}

#question{
  width:100%;
  min-height:76px;
  max-height:340px;
  padding:6px 6px 0;
  border:0;
  background:transparent;
  font-size:17px;
  font-weight:400;
  line-height:1.66;
  color:var(--ink);
  outline:none;
}
#question::placeholder{color:var(--ink-4)}
#question:disabled{color:var(--ink-3)}

.composer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.composer .mode{
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.05em;
  padding:4px 2px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* 30px 圆形发送钮 — moonshot 原值 */
.send{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;height:32px;
  border-radius:var(--r-send);
  background:var(--ink);
  color:#fff;
  font-size:15px;
  line-height:1;
  cursor:pointer;
  transition:background var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),opacity var(--t-fast) var(--ease);
}
.send:hover:not(:disabled){background:#000;transform:translateY(-1px)}
.send:active:not(:disabled){transform:scale(.94)}
.send:disabled{background:var(--surface-3);color:var(--ink-4);cursor:not-allowed}

/* --- 工作模式 / 新建对话（search.js 注入 .workflow-controls） --- */
.workflow-controls{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin:0 0 14px;
}
.workflow-controls select{
  padding:8px 12px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-pill);
  background:var(--paper);
  font-size:13px;
  color:var(--ink-2);
  cursor:pointer;
  transition:border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.workflow-controls select:hover{border-color:var(--line);color:var(--ink)}
.workflow-controls select:disabled{opacity:.45;cursor:not-allowed}
.workflow-controls button{
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-soft);
  font-size:13px;
  font-weight:450;
  color:var(--ink-2);
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.workflow-controls button:hover:not(:disabled){background:var(--surface-2);color:var(--ink);border-color:var(--line)}
.workflow-controls button:disabled{opacity:.4;cursor:not-allowed}

/* --- 安全评估 + 模型同意（search.js 注入 .chat-options） --- */
.chat-options{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin:16px 0 4px;
  padding:16px 18px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-md);
  background:var(--surface);
}
.chat-options[hidden]{display:none}
.chat-options select{
  width:100%;
  max-width:380px;
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--paper);
  font-size:13px;
  color:var(--ink-body);
  cursor:pointer;
}
.chat-options label{
  display:flex;
  gap:9px;
  align-items:flex-start;
  font-size:12.5px;
  line-height:1.7;
  color:var(--ink-2);
  cursor:pointer;
}
.chat-options input[type=checkbox]{
  flex:none;
  width:15px;height:15px;
  margin-top:3px;
  accent-color:var(--ink);
  cursor:pointer;
}

/* --- 示例问题：纯文字行，右侧细箭头（概念 D 要求，不用胶囊卡片） --- */
.examples{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin-top:18px;
  padding-top:6px;
}
.examples[hidden]{display:none}
.example{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:12px 12px 12px 4px;
  border-bottom:1px solid var(--line-soft);
  font-size:14.5px;
  font-weight:380;
  color:var(--ink-2);
  text-align:left;
  transition:color var(--t-fast) var(--ease),padding-left var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease);
}
.example:hover{color:var(--ink);padding-left:10px;border-color:var(--line)}
.example span{flex:none;font-size:13px;color:var(--ink-4);transition:color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease)}
.example:hover span{color:var(--ink-2);transform:translate(2px,-2px)}

/* ============ 9. 对话记录（search.js 注入） ============ */
.chat-history{
  display:flex;
  flex-direction:column;
  gap:18px;
  margin:30px 0 6px;
  padding-top:30px;
  border-top:1px solid var(--line-soft);
}
.chat-history:empty{display:none}

.chat-message{
  position:relative;
  max-width:100%;
  padding:20px 22px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  background:var(--paper);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-body);
}
.chat-message.user{
  align-self:flex-end;
  width:auto;
  max-width:min(84%,620px);
  background:var(--surface-2);
  border-color:transparent;
  border-bottom-right-radius:6px;
}
.chat-message.assistant{
  align-self:flex-start;
  width:100%;
  border-bottom-left-radius:6px;
}
.chat-speaker{
  display:block;
  font-size:11px;
  font-weight:500;
  letter-spacing:.09em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin-bottom:9px;
}
.chat-message.user .chat-speaker{color:var(--ink-3)}
.chat-message p{white-space:pre-wrap;margin:14px 0;font-size:17px;line-height:1.85}
.chat-message p:first-of-type{margin-top:0}
.chat-message>p:not(.source-meta):not(.chat-item){color:var(--ink-body)}

/* 待审核标记 — 生成内容必须视觉上区别于原文 */
.chat-message>strong:first-child{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-bottom:12px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  background:var(--warn-bg);
  color:var(--warn);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.05em;
}

.chat-item{
  font-size:15.5px !important;
  line-height:1.8 !important;
  color:var(--ink) !important;
  font-weight:400;
}

/* 消息内折叠区（病例记录 / 依据） */
.chat-message details{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--ink-2);
}
.chat-message details summary{
  cursor:pointer;
  font-size:12.5px;
  font-weight:450;
  color:var(--ink-3);
  letter-spacing:.02em;
  padding:3px 0;
  list-style:none;
  display:flex;
  align-items:center;
  gap:7px;
  transition:color var(--t-fast) var(--ease);
}
.chat-message details summary::-webkit-details-marker{display:none}
.chat-message details summary::before{
  content:"+";
  flex:none;
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-4);
  transition:transform var(--t-fast) var(--ease);
}
.chat-message details[open] summary::before{transform:rotate(45deg)}
.chat-message details summary:hover{color:var(--ink)}
.chat-message details[open] summary{margin-bottom:12px}

.chat-message ul{display:flex;flex-direction:column;gap:9px;margin:4px 0}
.chat-message li{
  position:relative;
  padding-left:16px;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-body);
}
.chat-message li::before{
  content:"";
  position:absolute;
  left:1px;top:.66em;
  width:4px;height:4px;
  border-radius:50%;
  background:var(--ink-4);
}

.chat-message blockquote{
  margin:12px 0;
  padding:11px 0 11px 15px;
  border-left:2px solid var(--line);
  font-size:13.5px;
  line-height:1.78;
  color:var(--ink-2);
  white-space:pre-wrap;
  font-style:normal;
}

.chat-message h4{
  margin:30px 0 12px;
  font-size:20px;
  font-weight:500;
  letter-spacing:-.01em;
  color:var(--ink);
}

/* ============ 10. 检索依据（#reply） ============ */
.reply{white-space:normal;margin-top:26px}
.reply[hidden]{display:none}
.reply>details{
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  background:var(--paper);
  overflow:hidden;
}
.reply>details>summary{
  display:flex;
  align-items:center;
  gap:9px;
  padding:15px 20px;
  cursor:pointer;
  font-size:13px;
  font-weight:450;
  color:var(--ink-2);
  letter-spacing:.02em;
  list-style:none;
  background:var(--surface);
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.reply>details>summary::-webkit-details-marker{display:none}
.reply>details>summary::before{
  content:"+";
  font-family:var(--mono);
  font-size:14px;
  color:var(--ink-3);
  transition:transform var(--t-fast) var(--ease);
}
.reply>details[open]>summary::before{transform:rotate(45deg)}
.reply>details>summary:hover{background:var(--surface-2);color:var(--ink)}
.reply>details[open]>summary{border-bottom:1px solid var(--line-soft)}

/* 证据卡片 */
.source-result{
  display:flex;
  flex-direction:column;
  gap:9px;
  padding:20px;
  border-bottom:1px solid var(--line-soft);
  transition:background var(--t-fast) var(--ease);
}
.source-result:last-child{border-bottom:0}
.source-result:hover{background:var(--surface)}
.source-result>strong{
  align-self:flex-start;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--stop-bg);
  color:var(--stop);
  font-size:11px;
  font-weight:500;
  letter-spacing:.05em;
}
.source-result h3{font-size:15.5px;font-weight:500;line-height:1.55;color:var(--ink)}
.source-result .source-body{
  font-size:14px;
  line-height:1.82;
  color:var(--ink-body);
  white-space:pre-wrap;
}
.source-result .source-open{align-self:flex-start;margin-top:4px}

/* 来源元信息：页码 / 时间戳 / 校对状态 */
.source-meta{
  font-size:12px !important;
  line-height:1.65 !important;
  color:var(--ink-3) !important;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  white-space:normal !important;
}

/* ============ 11. 工作区页脚提示 ============ */
.workspace-inner>.notice{
  margin-top:22px;
  font-size:12.5px;
  line-height:1.72;
  color:var(--ink-3);
  text-align:center;
  max-width:62ch;
  margin-inline:auto;
}
.workspace-foot{
  padding-top:16px;
  margin-top:14px !important;
  border-top:1px solid var(--line-soft);
  font-size:11.5px !important;
  letter-spacing:.06em;
  color:var(--ink-4) !important;
}

/* ============ 12. 弹窗 ============ */
dialog{
  width:min(620px,calc(100vw - 32px));
  max-height:min(84svh,760px);
  padding:0;
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  background:var(--paper);
  color:var(--ink-body);
  box-shadow:0 30px 80px -30px rgba(16,17,18,.34);
  overflow:hidden;
}
dialog::backdrop{background:rgba(16,17,18,.34);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
dialog[open]{animation:pop .28s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.985)}to{opacity:1;transform:none}}

/* 关于弹窗 */
#about{padding:clamp(26px,3vw,36px)}
#about h2{font-size:21px;font-weight:450;line-height:1.45;margin-bottom:16px;letter-spacing:-.01em}
#about p{font-size:14.5px;line-height:1.82;color:var(--ink-2);margin-bottom:13px}
#about p:last-of-type{
  margin:22px 0 0;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  color:var(--ink-3);
  letter-spacing:.04em;
}
#closeAbout{position:absolute;top:14px;right:14px}

/* 资料阅读面板：桌面保留对话，窄屏使用原生模态阅读。 */
#sourceDialog{
  position:fixed;
  inset:var(--nav-h) 0 0 auto;
  width:400px;
  height:calc(var(--app-height,100dvh) - var(--nav-h));
  max-width:100vw;
  max-height:none;
  margin:0;
  padding:0;
  border:0;
  border-left:1px solid var(--line);
  border-radius:0;
  background:var(--paper);
  box-shadow:-14px 0 48px -36px rgba(16,17,18,.25);
  z-index:70;
  overflow:hidden;
}
#sourceDialog[open]{display:flex;flex-direction:column;animation:sourcePanelEnter .28s var(--ease)}
#sourceDialog::backdrop{background:rgba(16,17,18,.18);backdrop-filter:blur(3px)}
.source-panel-header{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:64px;
  flex:none;
  padding:12px 20px;
  border-bottom:1px solid var(--line-soft);
}
.source-panel-header h2{flex:1;min-width:0;font-size:15px;font-weight:500;line-height:1.5;letter-spacing:var(--track)}
#sourceBack,#closeSource{display:grid;place-items:center;position:static;flex:none;min-width:40px;min-height:40px;padding:8px;border-radius:var(--r-xs);color:var(--ink-2);background:none;font-size:13px}
#sourceBack[hidden]{display:none}
#closeSource{font-size:20px}
#sourceBack{font-size:18px}
#sourceBack:hover,#closeSource:hover{background:var(--surface-2);color:var(--ink)}
.source-detail{flex:1;min-height:0;padding:24px;overflow-y:auto;overscroll-behavior:contain;max-height:none;scrollbar-gutter:stable}
.source-detail>h2{font-size:20px;font-weight:500;line-height:1.55;margin:0 0 14px;overflow-wrap:anywhere;letter-spacing:-.005em}
.source-detail .source-meta{margin:0 0 8px !important;color:var(--ink-2) !important;line-height:1.8 !important}
.source-context{margin-top:24px;padding:0;border:0;background:none;font-size:17px;line-height:1.95;color:var(--ink-body);white-space:pre-wrap;overflow-wrap:anywhere}
@keyframes sourcePanelEnter{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}

/* 设置弹窗（settings.js 用 innerHTML 生成，只能靠选择器美化） */
#settingsDialog{width:min(660px,calc(100vw - 32px))}
#settingsDialog form{padding:clamp(26px,3vw,34px);overflow-y:auto;max-height:min(84svh,760px)}
#settingsDialog h2{font-size:20px;font-weight:500;letter-spacing:-.01em}
#settingsDialog h3{
  font-size:12px;
  font-weight:500;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin:0 0 14px;
}
#settingsDialog .notice{
  margin:0 0 20px;
  padding:11px 14px;
  border-radius:var(--r-sm);
  background:var(--surface);
  font-size:12.5px;
  line-height:1.72;
  color:var(--ink-3);
}
#settingsDialog label{
  display:flex;
  flex-direction:column;
  gap:7px;
  margin-bottom:15px;
  font-size:12.5px;
  font-weight:450;
  color:var(--ink-2);
  letter-spacing:.02em;
}
#settingsDialog input,
#settingsDialog select,
#settingsDialog textarea{
  width:100%;
  padding:10px 13px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--paper);
  font-size:14px;
  color:var(--ink);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
#settingsDialog textarea{min-height:92px;line-height:1.7;resize:vertical}
#settingsDialog input:focus,
#settingsDialog select:focus,
#settingsDialog textarea:focus{
  outline:none;
  border-color:var(--ink-4);
  box-shadow:0 0 0 3px rgba(16,17,18,.055);
}
#settingsDialog input::placeholder,
#settingsDialog textarea::placeholder{color:var(--ink-4)}
#settingsDialog .settings-actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 12px}
#settingsDialog [role=status]{
  min-height:20px;
  margin:0;
  font-size:12.5px;
  line-height:1.65;
  color:var(--ink-3);
}
#settingsDialog details{margin:18px 0}
#settingsDialog details summary{
  cursor:pointer;
  font-size:12.5px;
  color:var(--ink-3);
  padding:3px 0;
  transition:color var(--t-fast) var(--ease);
}
#settingsDialog details summary:hover{color:var(--ink)}
#settingsDialog pre{
  margin:12px 0 0;
  padding:16px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-sm);
  background:var(--surface);
  font-family:var(--mono);
  line-height:1.75;
  color:var(--ink-2);
  max-height:280px;
  overflow:auto;
}
#settingsDialog>form>section{border-top-color:var(--line-soft) !important}
#saveWorkflow{margin-top:6px}

/* ============ 13. 页脚 ============ */
.foot{
  border-top:1px solid var(--line-soft);
  padding:clamp(48px,5vw,72px) 0 clamp(30px,3vw,44px);
  background:var(--paper);
}
.foot-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(auto-fit,minmax(126px,1fr));
  gap:clamp(26px,3vw,48px);
  width:var(--shell);
  margin-inline:auto;
}
.foot-brand{display:flex;flex-direction:column;gap:14px}
.foot-brand img{width:56px;height:28px;object-fit:contain;opacity:.86}
.foot-brand p{font-size:13px;line-height:1.76;color:var(--ink-3);max-width:32ch}
.foot-col h4{
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-3);
  padding-bottom:14px;
}
.foot-col ul{display:flex;flex-direction:column;gap:9px}
.foot-col li{font-size:13.5px;color:var(--ink-2);line-height:1.6}
.foot-col button,.foot-col a{
  font-size:13.5px;
  color:var(--ink-2);
  transition:color var(--t-fast) var(--ease);
  text-align:left;
}
.foot-col button:hover,.foot-col a:hover{color:var(--ink)}
.foot-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  width:var(--shell);
  margin:clamp(34px,4vw,54px) auto 0;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  font-size:12px;
  color:var(--ink-4);
  letter-spacing:.03em;
}
.foot-bar span{font-variant-numeric:tabular-nums}

/* ============ 14. 滚动渐显（moonshot reveal） ============ */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.07s}
.reveal[data-delay="2"]{transition-delay:.14s}
.reveal[data-delay="3"]{transition-delay:.21s}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .meridian-flow path{stroke-dashoffset:0;opacity:.5}
}

/* ============ 15. 响应式 ============ */
@media(max-width:1000px){
  .hero{padding:calc(var(--nav-h) + 32px) 20px 84px}
  .hero-content .display{font-size:clamp(38px,7.6vw,58px)}
  .hero-bg-inner{height:auto;width:min(100%,430px)}
  .plate{height:min(72svh,580px)}
  .plate figcaption{padding:26px 24px}
  .step-row{grid-template-columns:48px minmax(0,1fr);gap:16px}
  .step-side{grid-column:2;padding-top:8px}
}

@media(max-width:700px){
  :root{--nav-h:60px;--section-y:56px;--shell:calc(100% - 44px);--narrow:calc(100% - 44px)}
  header{padding:0 18px;gap:10px}
  .brand img{width:44px;height:22px}
  .brand-text span{display:none}
  .nav{gap:2px}
  .nav .quiet{font-size:13.5px;padding:6px 8px}
  .outline{padding:8px 14px;font-size:13.5px}
  .settings-gear{width:32px;height:32px;margin-left:2px}

  .hero{padding:calc(var(--nav-h) + 22px) 18px 72px;min-height:94svh}
  .hero-content .display{font-size:clamp(34px,9.6vw,46px)}
  .hero-sub{font-size:15.5px;margin-bottom:26px}
  .hero-composer{padding:13px 13px 9px}
  #heroQuestion{font-size:16px;min-height:44px}
  .hero-scroll{display:none}
  .plate{height:min(62svh,460px)}
  .plate .h2{font-size:22px;max-width:16ch}
  .band-head{margin-bottom:28px}

  .step-row{grid-template-columns:minmax(0,1fr);gap:8px;padding:20px 0}
  .step-num{padding-top:0}
  .step-side{grid-column:1}

  #workspace{padding:24px 0 40px}
  .workspace-inner{width:calc(100% - 36px)}
  #workTitle{font-size:23px;margin:12px 0 10px}
  .composer{padding:14px 14px 10px;border-radius:var(--r-md)}
  #question{font-size:16px;min-height:66px}
  .chat-message{padding:16px 17px;border-radius:var(--r-md)}
  .chat-message.user{max-width:92%}
  .source-detail,.source-result{padding:18px}
  dialog{width:calc(100vw - 20px);border-radius:var(--r-lg)}
  #settingsDialog form{padding:22px 20px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .foot-brand{grid-column:1/-1}
}

@media(max-width:400px){
  .foot-grid{grid-template-columns:1fr}
  .hero-cta .pill{width:100%}
}

/* ============ 16. 工作区导航与账号，按参考图保留清晰的侧栏和完整主区 ============ */
.in-conversation{--nav-h:0px;overflow:hidden}
.in-conversation #siteHeader{display:none}
#workspace,#sourceDialog,#settingsDialog,#authDialog{
  --font:"Segoe UI","PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Hiragino Sans GB",Arial,sans-serif;
  --track:0;
  font-family:var(--font);
  font-weight:400;
  letter-spacing:0;
}
#sourceDialog button,#settingsDialog button,#authDialog button{font-weight:400;letter-spacing:0}
#authDialog .auth-panel h2{font-weight:400;letter-spacing:0}
#workspace{--sidebar-w:304px;padding-left:var(--sidebar-w);height:var(--app-height,100dvh);min-height:0;padding-top:0;padding-bottom:0}
#workspace.sidebar-collapsed{padding-left:0}
.conversation-sidebar{position:fixed;top:0;bottom:0;left:0;width:var(--sidebar-w);padding:8px 8px 10px;display:flex;flex-direction:column;gap:4px;background:var(--paper);border-right:1px solid var(--line-soft);z-index:44;min-height:0}
.conversation-sidebar[hidden],.conversation-backdrop[hidden]{display:none!important}
.sidebar-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex:none;min-height:48px;margin-bottom:12px;padding:0 4px 0 12px}
.sidebar-brand{display:flex;align-items:center;gap:10px;min-width:0;min-height:40px;font-size:21px;line-height:1.4;font-weight:500;color:var(--ink);text-align:left;letter-spacing:0}
.sidebar-brand b{font:inherit}
.sidebar-brand img{width:33px;height:24px;object-fit:contain;flex:none}
.sidebar-collapse,.conversation-toggle{display:grid;place-items:center;flex:none;width:40px;height:40px;border-radius:var(--r-xs);color:var(--ink-2)}
.sidebar-collapse:hover,.conversation-toggle:hover{background:var(--surface-2);color:var(--ink)}
.sidebar-collapse svg,.conversation-toggle svg{width:20px;height:20px;max-width:none}
.conversation-toggle{display:none;position:fixed;top:8px;left:12px;z-index:45}
#workspace.sidebar-collapsed>.conversation-toggle{display:grid}
.conversation-backdrop{position:fixed;inset:0;background:rgba(16,17,18,.12);z-index:43}
.workspace-nav{display:flex;flex-direction:column;gap:2px;flex:none}
.workspace-link{display:flex;align-items:center;gap:12px;width:100%;min-height:44px;padding:10px 12px;border-radius:var(--r-xs);font-size:16px;line-height:1.5;font-weight:400;text-align:left;color:var(--ink-body);transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}
.workspace-link .nav-icon{flex:none;width:20px;height:20px;color:var(--ink-2)}
.workspace-link:hover{color:var(--ink);background:var(--surface)}
.workspace-link[aria-current=page]{color:var(--ink);background:var(--surface-2);font-weight:400}
.workspace-link[aria-current=page] .nav-icon{color:var(--ink)}
.sidebar-divider{height:1px;flex:none;border:0;margin:18px 12px 12px;background:var(--line-soft)}
.sidebar-history-heading{flex:none;padding:12px 12px 6px;font-size:13px;line-height:1.7;font-weight:400;letter-spacing:0;color:var(--ink-2)}
.conversation-new{display:flex;align-items:center;gap:12px;width:100%;min-height:44px;padding:10px 12px;margin:0 0 2px;border:0;border-radius:var(--r-xs);font-size:16px;line-height:1.5;font-weight:400;text-align:left;color:var(--ink-body)}
.conversation-new:hover:not(:disabled){background:var(--surface-2)}
.conversation-new:disabled{opacity:.4}
.conversation-sidebar>.quiet{font-size:13px;line-height:1.7;min-height:40px;text-align:left;padding:9px 12px;align-self:flex-start;color:var(--ink-2)}
.conversation-list{min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:2px;margin:2px 0 8px;padding:0 0 12px;flex:1;scrollbar-gutter:stable;scrollbar-width:thin}
.conversation-row{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 32px;gap:4px;min-width:0;border-radius:var(--r-xs);padding:2px 4px 2px 12px}
.conversation-row:hover,.conversation-row:focus-within{background:var(--surface)}
.conversation-row.selected{background:var(--surface-2)}
.conversation-open{display:block;width:100%;min-width:0;min-height:40px;padding:8px 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;color:var(--ink-body);font-size:15px;line-height:1.6;font-weight:400}
.conversation-menu{align-self:center;position:relative}
.conversation-menu>summary{display:grid;place-items:center;width:32px;height:40px;list-style:none;border-radius:var(--r-xs);color:var(--ink-2);cursor:pointer;font-size:20px;line-height:1;letter-spacing:1px;opacity:0;transition:opacity var(--t-fast) var(--ease)}
.conversation-menu>summary::-webkit-details-marker{display:none}
.conversation-row:hover summary,.conversation-row:focus-within summary,.conversation-menu[open]>summary{opacity:1}
.conversation-menu>summary:hover{background:var(--surface-3)}
.conversation-tools{position:fixed;right:auto;top:0;width:144px;display:flex;flex-direction:column;gap:2px;padding:5px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:0 8px 30px rgba(16,17,18,.08);z-index:2}
.conversation-tools button{display:block;text-align:left;font-size:13px;line-height:1.5;min-height:40px;color:var(--ink-body);padding:10px;border-radius:var(--r-xs)}
.conversation-tools button:hover{background:var(--surface-2)}
.conversation-tools button:last-child{color:var(--stop)}
.sidebar-footer{flex:none;margin-top:auto;border-top:1px solid var(--line-soft);padding-top:8px}
.sidebar-profile{display:flex;align-items:center;gap:11px;width:100%;min-height:52px;padding:8px 12px;border-radius:var(--r-xs);text-align:left;font-size:15px;color:var(--ink-body)}
.sidebar-profile:hover{background:var(--surface)}
.sidebar-profile>svg{flex:none;width:24px;height:24px;color:var(--ink-2)}
.sidebar-profile>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sidebar-profile-text{display:flex;flex-direction:column;gap:3px}
.sidebar-profile-label{flex:1;font-size:15px}
.sidebar-profile-role{flex:none;font-size:12px;line-height:1.5;color:var(--ink-2)}
.conversation-account{font-size:11px;line-height:1.65;color:var(--ink-3);overflow-wrap:anywhere;padding:0 12px 6px}
.account-credits{padding:0 12px 8px;font-size:11px;line-height:1.7;color:var(--ink-3)}
.account-credits:empty,.account-credits[hidden]{display:none}
.conversation-empty,.conversation-status{font-size:12px;color:var(--ink-3);line-height:1.7;padding:0 12px}
.conversation-empty{padding-block:8px}
.conversation-status{flex:none}
.conversation-status:empty{display:none}
.current-conversation{display:block;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;line-height:1.5;color:var(--ink-2)}

/* ============ 17. 主区独立铺满；空会话居中输入，有记录后输入固定在底部 ============ */
.workspace-inner{display:grid;grid-template-rows:56px minmax(0,1fr) auto;width:100%;height:100%;min-height:0;padding-inline:0}
.work-toolbar{grid-row:1;min-width:0;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 24px;border:0}
.work-toolbar #workTitle{margin:0}
.work-toolbar .sub{display:none}
.work-toolbar [hidden]{display:none!important}
#workspace .quiet{font-weight:400;letter-spacing:0}
.work-toolbar>.current-conversation{flex:1;margin-right:auto}
.workspace-controls{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex:none;margin-left:auto}
.workspace-home,.workspace-account{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:8px 11px;border-radius:var(--r-xs);font-size:14px;line-height:1.5;font-weight:400;color:var(--ink-body);white-space:nowrap}
.workspace-home:hover,.workspace-account:hover{background:var(--surface-2)}
.workspace-home svg,.workspace-account svg{width:20px;height:20px;flex:none}
.workspace-controls .settings-gear{margin-left:0;width:40px;height:40px}
.workspace-controls #accountButton{display:flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;max-width:132px;margin:0;padding:8px 11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:0;border-radius:var(--r-xs);font-size:14px;line-height:1.5;font-weight:400;letter-spacing:0;color:var(--ink-body)}
.workspace-controls #accountButton:hover{background:var(--surface-2)}
#workspace.sidebar-collapsed .work-toolbar{padding-left:64px}
.conversation-scroll{grid-row:2;min-width:0;min-height:0;width:100%;margin:0;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:26px max(24px,calc((100% - 768px)/2)) 40px;outline-offset:-2px}
.conversation-welcome{padding:0;text-align:center}
.conversation-welcome h2{font-size:28px;font-weight:400;line-height:1.5;letter-spacing:0;margin:0;color:var(--ink)}
.conversation-welcome p{display:none}
.has-conversation .conversation-welcome{display:none}
.conversation-scroll .examples{display:none}
.conversation-scroll .examples[hidden]{display:none}
.conversation-scroll .example{width:auto;gap:10px;padding:7px 0;border:0;font-size:12px;color:var(--ink-2)}
.conversation-scroll .example:hover{color:var(--ink);padding-left:0}
.conversation-scroll .chat-history{width:100%;margin:0 auto;padding:0;border:0;gap:32px}
.conversation-scroll .chat-history:empty{display:none}
.conversation-scroll .chat-message.assistant{border:0;padding:0;border-radius:0;background:transparent}
.conversation-scroll .chat-message.user{padding:12px 18px;border-radius:var(--r-lg);max-width:85%;background:var(--surface-2)}
.conversation-scroll .chat-message.user p{margin:0}
.conversation-scroll .chat-speaker{display:none}
.chat-message,.chat-message p,.chat-message li{font-size:17px;font-weight:400;line-height:1.8;letter-spacing:0}
.chat-message p{margin:12px 0}
.chat-answer{overflow-wrap:anywhere;font-size:17px;line-height:1.85}
.chat-answer>:first-child{margin-top:0}
.chat-answer h3,.chat-answer h4{font-size:19px;line-height:1.65;font-weight:600;margin:30px 0 12px;letter-spacing:0}
.chat-answer h4{font-size:18px}
.chat-answer p{margin:13px 0;white-space:normal;font-size:inherit;line-height:inherit}
.chat-answer strong{font-weight:600;color:var(--ink)}
.chat-answer ul,.chat-answer ol{display:block;margin:14px 0;padding-left:1.45em;list-style:disc}
.chat-answer ol{list-style:decimal}
.chat-answer li{position:static;padding:0 0 0 4px;margin:8px 0;font-size:inherit;line-height:1.85}
.chat-answer li::before{display:none}
.chat-answer li::marker{color:var(--ink-2);font-size:.88em}
.chat-answer li>p{margin:6px 0}
.chat-answer blockquote{margin:20px 0;padding:3px 0 3px 18px;border-left:2px solid var(--line);background:none;font-size:16px;line-height:1.85;color:var(--ink-2);white-space:normal}
.chat-answer blockquote p{font-size:inherit;color:inherit}
.markdown-table-wrap{width:100%;max-width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--line-soft);border-radius:var(--r-sm);overscroll-behavior-x:contain}
.markdown-table-wrap table{width:100%;border-collapse:collapse;min-width:400px;font-size:14px;line-height:1.75;text-align:left}
.markdown-table-wrap th,.markdown-table-wrap td{min-width:96px;max-width:360px;padding:12px 14px;border-bottom:1px solid var(--line-soft);vertical-align:top;font-weight:400;overflow-wrap:break-word}
.markdown-table-wrap th{font-weight:500;color:var(--ink);background:var(--surface)}
.markdown-table-wrap tr:last-child td{border-bottom:0}
.markdown-code{max-width:100%;overflow-x:auto;margin:20px 0;padding:18px 20px;border:1px solid var(--line-soft);border-radius:var(--r-sm);background:var(--surface);color:var(--ink-body);font:13px/1.8 var(--mono);letter-spacing:0;white-space:pre;tab-size:2}
.chat-answer :not(pre)>code{padding:2px 5px;border-radius:4px;background:var(--surface-2);font:.88em/1.6 var(--mono);letter-spacing:0}
.message-actions{display:flex;align-items:center;gap:6px;margin:16px 0 0}
.message-actions button{display:flex;align-items:center;justify-content:center;gap:6px;min-width:36px;min-height:36px;padding:6px 9px;border-radius:var(--r-xs);font-size:12px;color:var(--ink-2)}
.message-actions button:hover{color:var(--ink);background:var(--surface)}
.message-actions svg{width:15px;height:15px}
.conversation-scroll .chat-message .chat-answer>:is(h3,h4):first-child{margin-top:0}
.sources-toggle{display:inline-flex;align-items:center;justify-content:center;gap:7px;flex:none;min-height:40px;padding:8px 10px;border:0;border-radius:var(--r-xs);font-size:13px;line-height:1.5;font-weight:400;color:var(--ink-2);transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}
.sources-toggle:hover:not(:disabled),.sources-toggle[aria-expanded=true]{background:var(--surface);color:var(--ink)}
.sources-toggle:disabled{opacity:.4}
.sources-count{display:inline-grid;place-items:center;min-width:18px;height:18px;padding:0 3px;border-radius:var(--r-pill);background:var(--surface-2);font-size:10px;font-variant-numeric:tabular-nums;color:var(--ink-2)}
.sources-count:empty{display:none}
.workspace-placeholder{grid-row:2/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;min-height:0;padding:36px 0 80px;text-align:center}
.workspace-placeholder[hidden],.workspace-inner>[hidden]{display:none!important}
.workspace-placeholder h2{font-size:28px;font-weight:400;line-height:1.5;letter-spacing:0}
.workspace-placeholder .empty-ornament{display:grid;place-items:center;width:64px;height:64px;border:1px solid var(--line-soft);border-radius:var(--r-lg);color:var(--ink-4)}
.workspace-placeholder .empty-ornament svg{width:28px;height:28px;stroke-width:1}
.workspace-inner.section-placeholder>.conversation-scroll,.workspace-inner.section-placeholder>.composer-dock{display:none}
.workspace-inner.section-placeholder .sources-toggle{display:none}
@media(min-width:1280px){#workspace.source-panel-open{padding-right:400px}}
.chat-message details{border:0;padding-top:0;margin-top:18px}
.composer-dock{grid-row:3;min-width:0;width:min(768px,100% - 48px);margin-inline:auto;padding:12px 0 max(10px,env(safe-area-inset-bottom));border:0;background:var(--paper);position:relative;z-index:5}
.composer-dock .composer{background:rgba(255,255,255,.88);backdrop-filter:blur(23px);box-shadow:0 3px 18px -14px var(--ink-4);gap:6px;padding:13px 14px 10px}
.composer-dock #question{font-size:17px;min-height:32px;max-height:min(180px,24vh,calc(var(--app-height,100dvh) * .28));resize:none;line-height:1.7;padding:2px 4px}
#workspace:not(.has-conversation) .workspace-inner:not(.section-placeholder){grid-template-rows:56px minmax(72px,.72fr) auto minmax(0,1fr)}
#workspace:not(.has-conversation) .conversation-scroll{display:flex;flex-direction:column;justify-content:flex-end;overflow:visible;padding:0 24px 36px}
#workspace:not(.has-conversation) .work-toolbar>.current-conversation{visibility:hidden}
#workspace:not(.has-conversation) .composer-dock{padding:0 0 max(12px,env(safe-area-inset-bottom))}
#workspace:not(.has-conversation) .composer{display:grid;grid-template-columns:32px minmax(0,1fr) 36px;grid-template-rows:auto;align-items:center;gap:12px;min-height:64px;padding:10px 12px;border-radius:32px;box-shadow:0 2px 14px rgba(16,17,18,.045)}
#workspace:not(.has-conversation) #question{grid-column:2;grid-row:1;min-height:32px;padding:2px 0;line-height:1.65}
#workspace:not(.has-conversation) .composer-bottom{display:contents}
#workspace:not(.has-conversation) .conversation-preferences{grid-column:1;grid-row:1;align-self:end;margin-bottom:4px}
#workspace:not(.has-conversation) .composer-bottom .send{grid-column:3;grid-row:1;align-self:end;width:36px;height:36px;margin-bottom:2px}
#workspace:not(.has-conversation) .composer.is-multiline,#workspace:not(.has-conversation) .composer.is-expanded{display:flex;flex-direction:column;align-items:stretch;gap:10px;padding:14px 14px 10px;border-radius:var(--r-lg)}
#workspace:not(.has-conversation) .composer.is-multiline .composer-bottom,#workspace:not(.has-conversation) .composer.is-expanded .composer-bottom{display:flex}
#workspace:not(.has-conversation) .composer.is-multiline .conversation-preferences,#workspace:not(.has-conversation) .composer.is-expanded .conversation-preferences,#workspace:not(.has-conversation) .composer.is-multiline .send,#workspace:not(.has-conversation) .composer.is-expanded .send{margin-bottom:0}
#workspace:not(.has-conversation) .conversation-foot{margin-top:12px}
.composer-bottom .mode{display:none}
.composer-bottom .send{margin-left:auto}
.conversation-preferences{position:relative;margin:0;flex:none}
.conversation-preferences>summary{display:grid;place-items:center;width:32px;height:32px;border-radius:var(--r-pill);list-style:none;color:var(--ink-2);font-size:24px;line-height:1;cursor:pointer}
.conversation-preferences>summary::-webkit-details-marker{display:none}
.conversation-preferences>summary:hover,.conversation-preferences[open]>summary{background:var(--surface-2);color:var(--ink)}
.send-settings-panel{position:absolute;left:-14px;bottom:calc(100% + 14px);width:min(360px,calc(100vw - 40px));max-height:min(370px,calc(var(--app-height,100dvh) - 190px));overflow:auto;padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:0 12px 40px rgba(16,17,18,.1)}
.send-settings-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;font-weight:500;margin-bottom:16px}
.send-settings-heading #consentState{font-size:11px;font-weight:400;color:var(--ink-3)}
.send-settings-panel .workflow-controls{margin:0 0 12px;display:block}
.send-settings-panel .workflow-controls select{width:100%;font-size:13px;padding:9px 12px;border-radius:var(--r-sm)}
.send-settings-panel .chat-options{border:0;padding:0;background:none;gap:14px;margin:0}
.send-settings-panel .chat-options select{font-size:12px;width:100%;max-width:100%}
.send-settings-panel .chat-options label{font-size:12px;line-height:1.75}
.send-settings-panel .preliminary{font-size:12px;color:var(--ink-2);padding:12px 0 0;margin-top:14px;border-top:1px solid var(--line-soft);border-radius:0;text-align:left;width:100%}
.conversation-foot{display:flex;justify-content:center;margin:8px 4px 0;color:var(--ink-3);font-size:10.5px;line-height:1.5}
.reply-guide{font-size:12px;color:var(--ink-2);margin:0 4px 8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.answer-label{display:block;color:var(--ink-2);font-size:11px;line-height:1.6;font-weight:500;letter-spacing:.04em;margin-bottom:4px}
.chat-answer .answer-keypoint{padding:0;border:0;background:none;border-radius:0;margin:12px 0 20px;color:var(--ink-body)}
.chat-answer .answer-question{padding:0;margin:12px 0;list-style:none}
.chat-answer .answer-question::before{display:none}
.chat-answer .priority-question{padding:0 0 0 14px;border:0;border-left:2px solid var(--ink-4);border-radius:0;background:none;font-weight:500}
.answer-respond{display:inline-block;vertical-align:baseline;margin:0 0 0 10px;font-size:12px;font-weight:400;color:var(--ink-2);padding:2px 0}
.answer-respond:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
.chat-answer .answer-next{border:0;padding:0;margin:18px 0 12px;color:var(--ink-2)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hero-composer,.composer-dock .composer{view-transition-name:hudong-composer}
#landing.paused .hero-scroll i{animation-play-state:paused}
#landing.paused .reveal{transition:none;opacity:1;transform:none}
::view-transition-group(hudong-composer){animation-duration:.48s;animation-timing-function:var(--ease)}
::view-transition-old(root){animation:workLeave .24s var(--ease) both}
::view-transition-new(root){animation:workEnter .42s var(--ease) both}
@keyframes workLeave{to{opacity:0}}
@keyframes workEnter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(min-width:821px) and (max-width:1279px){
 #workspace{--sidebar-w:280px}
}
@media(max-width:820px){
 #workspace{padding-left:0}
 .conversation-sidebar{width:min(304px,calc(100vw - 48px));box-shadow:8px 0 40px rgba(16,17,18,.07)}
 .conversation-menu>summary{opacity:1}
 .workspace-inner{width:100%}
 .work-toolbar{min-height:56px;padding:0 12px 0 56px;gap:6px}
 #workspace.sidebar-collapsed .work-toolbar{padding-left:56px}
 .current-conversation{font-size:13px}
 .workspace-controls{gap:2px}
 .workspace-home{min-height:40px;padding:8px;font-size:13px}
 .workspace-controls #accountButton{max-width:96px;padding:8px;font-size:13px}
 .workspace-controls .settings-gear{width:36px}
 .sources-toggle{gap:4px;min-height:40px;padding:8px 7px;font-size:12px}
 .conversation-scroll{padding:20px 16px 28px}
 .conversation-scroll .chat-history{gap:28px}
 .chat-message,.chat-message p,.chat-message li,.chat-answer{font-size:16px;line-height:1.85}
 .chat-answer h3,.chat-answer h4{font-size:18px;margin-top:24px}
 .chat-answer blockquote{font-size:15px}
 .markdown-table-wrap th,.markdown-table-wrap td{padding:10px 12px}
 .markdown-code{font-size:12px;padding:14px 16px}
 .workspace-placeholder{padding-bottom:60px}
 .conversation-scroll .chat-message.user{padding:10px 15px;max-width:92%}
 .composer-dock{width:calc(100% - 32px);padding-top:8px;padding-bottom:max(8px,env(safe-area-inset-bottom))}
 .composer-dock #question{font-size:16px}
 .conversation-welcome h2,.workspace-placeholder h2{font-size:25px}
 #workspace:not(.has-conversation) .conversation-scroll{padding:0 16px 28px}
 #workspace:not(.has-conversation) .composer{min-height:60px;gap:9px;padding:8px 10px}
 .conversation-foot{font-size:10px}
 .send-settings-panel{max-height:calc(var(--app-height,100dvh) - 160px)}
}
@media(max-width:360px){
 .workspace-controls #accountButton{max-width:76px}
 .workspace-home{padding-inline:6px}
 .work-toolbar{gap:2px;padding-right:8px}
 .sources-toggle{padding-inline:5px}
 .sources-toggle .sources-count{min-width:16px}
}
@media(max-height:500px){
 #workspace:not(.has-conversation) .workspace-inner:not(.section-placeholder){grid-template-rows:56px minmax(24px,.72fr) auto minmax(0,1fr)}
 #workspace:not(.has-conversation) .conversation-scroll{padding-bottom:18px}
 .conversation-welcome h2{font-size:23px}
}
@media(hover:none){.conversation-menu>summary{opacity:1}}
@media(prefers-reduced-motion:reduce){
 ::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}
 #sourceDialog[open]{animation:none}
}

/* ============ 18. 独立账号入口 ============ */
.account-button{white-space:nowrap}
.settings-gear[hidden]{display:none}
#authDialog{width:min(480px,calc(100vw - 28px));padding:0;max-height:calc(100dvh - 28px);overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);color:var(--ink-body)}
#authDialog::backdrop{background:rgba(16,17,18,.2);backdrop-filter:blur(8px)}
.auth-panel{padding:40px;position:relative}
.auth-close{position:absolute;top:18px;right:22px;font-size:12px;color:var(--ink-2)}
.auth-panel .overline{display:block;margin:10px 0 20px;font-size:10px;color:var(--ink-3)}
.auth-panel h2{font-size:30px;font-weight:300;line-height:1.45;letter-spacing:-.022em}
.auth-intro{font-size:14px;line-height:1.8;color:var(--ink-2);margin:16px 0 26px}
.auth-tabs{display:flex;gap:22px;border-bottom:1px solid var(--line-soft);margin-bottom:20px}
.auth-tabs button{font-size:13px;padding:0 0 12px;color:var(--ink-3);border-bottom:1px solid transparent;margin-bottom:-1px}
.auth-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink)}
.auth-panel label{display:block;margin:18px 0 8px;font-size:12px;color:var(--ink-2)}
.auth-panel input{width:100%;min-width:0;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--paper);padding:12px 14px;font-size:16px;line-height:1.5}
.auth-panel input::placeholder{color:var(--ink-3)}
.auth-code-row{display:flex;gap:10px;align-items:stretch}
.auth-code-row input{flex:1;width:0}
.auth-code-row .pill{font-size:12px;white-space:nowrap;padding:10px 15px}
.auth-primary{width:100%;justify-content:center;margin-top:24px;background:var(--ink);color:var(--paper);border-color:var(--ink);padding:13px 20px}
.auth-primary:hover{background:rgba(16,17,18,.86)}
.auth-panel button:disabled{opacity:.36;cursor:not-allowed}
.auth-note,.auth-fine,.auth-status,.auth-account{font-size:12px;line-height:1.8;color:var(--ink-2)}
.auth-note{padding:12px 14px;background:var(--surface);border-radius:var(--r-sm)}
.auth-fine{margin-top:14px;font-size:11px;color:var(--ink-3)}
.auth-status{margin-top:16px;overflow-wrap:anywhere}
.auth-status:empty{display:none}
.auth-account{font-size:14px;margin:22px 0 0}
@media(max-width:700px){
 .auth-panel{padding:34px 24px 26px}
 .auth-panel h2{font-size:28px}
 .auth-tabs{gap:18px}
 .auth-tabs button{font-size:12px}
 .nav .account-button{font-size:12px;padding:6px}
 .nav #aboutButton{display:none}
}

/* 打印：只保留对话与证据，去掉装饰 */
@media print{
  header,.foot,.hero-art,.examples,.composer,.chat-options,.workflow-controls,.settings-gear,.conversation-sidebar,.conversation-toggle{display:none !important}
  body{font-size:11pt;color:#000}
  .chat-message,.source-result{border:0;padding:0 0 10px;break-inside:avoid}
  dialog{display:none !important}
  .in-conversation{overflow:visible}
  #workspace,.workspace-inner{height:auto;padding:0;width:100%}
  .conversation-scroll{overflow:visible}
  .composer-dock,.work-toolbar,.answer-respond{display:none}
}

/* Internal management follows the shared white dialog and spacing tokens. */
#settingsDialog{padding:0;max-height:calc(var(--app-height,100dvh) - 28px);overflow:auto}
.management-panel{padding:clamp(24px,3vw,34px)}
.settings-header,.management-section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}
.settings-header{margin-bottom:24px}
.settings-header>.quiet,.management-section-heading>.quiet{font-size:12px;white-space:nowrap;color:var(--ink-2)}
.management-tabs{display:flex;gap:24px;border-bottom:1px solid var(--line-soft);margin-bottom:24px}
.management-tabs button{padding:0 0 12px;margin-bottom:-1px;border-bottom:1px solid transparent;font-size:13px;color:var(--ink-3);white-space:nowrap}
.management-tabs button[aria-selected=true]{border-bottom-color:var(--ink);color:var(--ink)}
#settingsDialog form{padding:0;overflow:visible;max-height:none}
#settingsDialog .workflow-settings,#settingsDialog .account-create{border-top:1px solid var(--line-soft);padding-top:24px;margin-top:24px}
#settingsDialog h3{letter-spacing:.04em;margin:0 0 16px}
#settingsDialog .management-section-heading h3{margin:0}
.management-section-heading{margin-bottom:20px}
#settingsDialog [hidden]{display:none!important}
.management-note{font-size:12px;line-height:1.8;color:var(--ink-3);margin:12px 0 18px}
.management-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.usage-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:0 0 18px}
.usage-summary>div{padding:18px 14px;border:1px solid var(--line-soft);border-radius:var(--r-sm)}
.usage-summary dt{font-size:12px;color:var(--ink-3)}
.usage-summary dd{font-size:26px;font-weight:300;margin:8px 0 0;font-variant-numeric:tabular-nums}
.external-account{display:grid;grid-template-columns:minmax(0,1fr) 130px auto;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-soft)}
.external-account-info{display:flex;flex-direction:column;gap:5px;min-width:0;overflow-wrap:anywhere}
.external-account-info strong{font-size:13px;font-weight:500}
.external-account-info span{font-size:11px;color:var(--ink-3)}
#settingsDialog .external-account label{font-size:11px;margin:0}
#settingsDialog .external-account select{font-size:12px;padding:8px}
.external-account>.source-open{font-size:12px;padding:8px 10px;margin:18px 0 0}
.account-profile{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px 22px;margin:20px 0 28px;font-size:13px;line-height:1.7}
.account-profile dt{color:var(--ink-3)}
.account-profile dd{margin:0;text-align:right;overflow-wrap:anywhere}
@media(max-width:700px){
 #settingsDialog{width:calc(100vw - 20px)}
 #settingsDialog .management-panel{padding:26px 20px}
 .management-tabs{gap:20px}
 .management-tabs button{font-size:12px}
 .external-account{grid-template-columns:minmax(0,1fr) auto;gap:10px}
 .external-account-info{grid-column:1/-1}
 #settingsDialog .external-account label{max-width:180px}
 .external-account>.source-open{margin-top:18px}
 .usage-summary{gap:8px}
 .usage-summary>div{padding:14px 10px}
 .usage-summary dd{font-size:23px}
}
.account-usage-table{width:100%;border-collapse:collapse;font-size:12px;table-layout:fixed;margin-top:22px}
.account-usage-table caption{text-align:left;font-size:12px;color:var(--ink-2);margin-bottom:14px}
.account-usage-table th,.account-usage-table td{text-align:left;padding:10px 0;border-bottom:1px solid var(--line-soft);overflow-wrap:anywhere;font-weight:400}
.account-usage-table th{color:var(--ink-3)}
.account-usage-table th:last-child,.account-usage-table td:last-child{text-align:right;width:96px}


/* ============ 19. 原文阅读：可读排版与提取文字可核对 ============ */
#sourceDialog [hidden]{display:none!important}
#sourceDialog .reply{margin:0}
.source-list{display:flex;flex-direction:column;gap:0}
.source-list-heading{font-size:12px;font-weight:400;line-height:1.8;color:var(--ink-2);margin:0 0 18px}
.source-card{display:flex;flex-direction:column;align-items:flex-start;gap:8px;width:100%;min-width:0;padding:20px 0;text-align:left;border-bottom:1px solid var(--line-soft);color:var(--ink-body);transition:color var(--t-fast) var(--ease)}
.source-card:first-of-type{padding-top:0}
.source-card:last-child{border-bottom:0}
.source-card:hover .source-card-title{text-decoration:underline;text-decoration-color:var(--ink-4);text-underline-offset:4px}
.source-card-kind{display:inline-flex;align-items:center;gap:6px;font-size:10px;font-weight:500;line-height:1.5;letter-spacing:.08em;color:var(--ink-3);text-transform:uppercase}
.source-card-title{font-size:15px;font-weight:500;line-height:1.75;color:var(--ink);overflow-wrap:anywhere}
.source-card-meta{font-size:11px;line-height:1.75;color:var(--ink-2);font-variant-numeric:tabular-nums}
.source-card-excerpt{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:13px;line-height:1.9;color:var(--ink-2);overflow-wrap:anywhere;white-space:normal}
.source-reader{min-width:0;max-width:75ch;margin-inline:auto}
.source-reader-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin:22px 0 24px;padding-bottom:14px;border-bottom:1px solid var(--line-soft)}
.source-view-tabs{display:flex;gap:4px;padding:3px;border:1px solid var(--line-soft);border-radius:var(--r-pill);background:var(--surface)}
.source-view-tabs button{min-height:34px;padding:7px 12px;border-radius:var(--r-pill);font-size:12px;color:var(--ink-2);white-space:nowrap}
.source-view-tabs button[aria-selected=true]{background:var(--paper);color:var(--ink);box-shadow:0 1px 4px rgba(16,17,18,.06)}
.source-copy{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;padding:6px 8px;border-radius:var(--r-xs);font-size:12px;color:var(--ink-2)}
.source-copy:hover{background:var(--surface);color:var(--ink)}
.source-copy svg{width:15px;height:15px}
.source-readable,.source-raw{max-width:100%;color:var(--ink-body);font-size:17px;line-height:1.95;overflow-wrap:anywhere}
.source-readable[hidden],.source-raw[hidden]{display:none}
.source-readable p{margin:0 0 1.15em;white-space:normal}
.source-readable .source-block--paragraph{white-space:pre-line}
.source-readable :is(h2,h3,h4),.source-block--heading{padding:0;margin:1.8em 0 .7em;font-size:19px;line-height:1.7;font-weight:500;color:var(--ink);letter-spacing:-.005em}
.source-readable>:first-child{margin-top:0}
.source-readable ul,.source-readable ol,.source-block--list{display:block;margin:1em 0 1.25em;padding-left:1.3em;list-style:disc}
.source-readable ol{list-style:decimal}
.source-readable div.source-reader-list{padding-left:0;list-style:none}
.source-reader-list-item{margin:.65em 0!important;white-space:pre-line!important}
.source-reader-transcript{white-space:pre-line!important}
.source-readable li{margin:.6em 0;padding-left:3px}
.source-readable li::marker{color:var(--ink-3)}
.source-block--meta{font-size:12px;line-height:1.9;color:var(--ink-2);margin:12px 0}
.source-block--timestamp{margin:20px 0 8px;padding-top:16px;border-top:1px solid var(--line-soft);font-size:12px;line-height:1.8;font-weight:400;color:var(--ink-2);font-variant-numeric:tabular-nums}
.source-block--table{max-width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--line-soft);border-radius:var(--r-xs)}
.source-readable table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.8;min-width:300px;text-align:left}
.source-readable th,.source-readable td{padding:10px 12px;border-bottom:1px solid var(--line-soft);vertical-align:top;min-width:90px;font-weight:400}
.source-readable th{font-weight:500;background:var(--surface);color:var(--ink)}
.source-readable tr:last-child td{border-bottom:0}
.source-readable pre{margin:20px 0;padding:16px;border:1px solid var(--line-soft);border-radius:var(--r-xs);overflow-x:auto;white-space:pre;font:13px/1.9 var(--mono);letter-spacing:0;background:var(--surface)}
.source-raw{margin:0;padding:0;font:13px/1.95 var(--mono);letter-spacing:0;white-space:pre-wrap;word-break:normal}
.source-reader-status{margin:22px 0 0;padding-top:14px;border-top:1px solid var(--line-soft);font-size:11px;line-height:1.85;color:var(--ink-3);overflow-wrap:anywhere}
.source-reader-status:empty{display:none}
.source-reader-note{margin:0 0 26px;font-size:11px;line-height:1.9;color:var(--ink-3)}
.source-reader-toolbar .source-reader-status{flex-basis:100%;margin:0;padding:0;border:0;font-size:11px;line-height:1.8;color:var(--ink-2)}
.source-provenance{margin:24px 0 0;border-top:1px solid var(--line-soft);padding-top:14px;font-size:11px;line-height:1.9;color:var(--ink-3);overflow-wrap:anywhere}
.source-provenance summary{display:flex;align-items:center;gap:7px;width:fit-content;min-height:36px;cursor:pointer;list-style:none;color:var(--ink-2);font-size:12px}
.source-provenance summary::-webkit-details-marker{display:none}
.source-provenance summary::before{content:'+';font-family:var(--mono);color:var(--ink-3)}
.source-provenance[open] summary::before{content:'−'}
.source-provenance p{margin:8px 0}
.source-provenance code{font-family:var(--mono);font-size:10px;letter-spacing:0}
@media(max-width:1279px){
 #sourceDialog{inset:16px 16px 16px auto;width:min(680px,calc(100vw - 32px));height:calc(var(--app-height,100dvh) - 32px);max-height:calc(100dvh - 32px);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:0 20px 70px -28px rgba(16,17,18,.3)}
 .source-panel-header{padding-inline:24px}
 .source-detail{padding:28px 32px}
}
@media(max-width:700px){
 #sourceDialog{inset:0;width:100vw;height:100dvh;max-width:none;max-height:none;border:0;border-radius:0;box-shadow:none}
 .source-panel-header{min-height:60px;padding:10px 16px;padding-top:max(10px,env(safe-area-inset-top))}
 .source-detail{padding:24px 22px max(28px,env(safe-area-inset-bottom))}
 .source-detail>h2{font-size:20px;line-height:1.65}
 .source-readable{font-size:16px;line-height:1.95}
 .source-readable :is(h2,h3,h4),.source-block--heading{font-size:18px}
 .source-reader-toolbar{margin-block:20px 24px;gap:8px}
 .source-view-tabs button{min-height:36px;padding-inline:11px}
 .source-copy{min-height:40px}
 .source-card-title{font-size:15px}
 .source-card-excerpt{font-size:13px}
}
@media print{
 .message-actions,.sources-toggle,.workspace-placeholder,#sourceDialog{display:none!important}
}

/* ============ 20. 注册与独立用户管理 ============ */
.auth-switch{display:block;margin:18px auto 0;font-size:13px;color:var(--ink-2);min-height:36px;text-underline-offset:4px}
.auth-switch:hover{text-decoration:underline}
.auth-wechat-login{display:flex;align-items:center;gap:16px;margin-top:22px;color:var(--ink-3);font-size:12px}
.auth-wechat-login .pill{flex:1;justify-content:center}
.account-wechat{margin:14px 0 24px}
.account-wechat .pill{font-size:13px}
.auth-notification{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:100;max-width:calc(100vw - 32px);width:max-content;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:0 8px 36px rgba(16,17,18,.09);padding:14px 18px;font-size:13px;line-height:1.7;color:var(--ink-body);display:flex;gap:20px;align-items:center}
.auth-notification button{font-size:12px;color:var(--ink-3);white-space:nowrap}
.in-user-admin{overflow:hidden}
.in-user-admin #siteHeader{display:none}
#userAdminScreen,#userDetailDialog,#userCreateDialog{--font:"Segoe UI","PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Hiragino Sans GB",Arial,sans-serif;font-family:var(--font);font-weight:400;letter-spacing:0}
#userAdminScreen{--sidebar-w:304px;position:fixed;inset:0;z-index:48;height:var(--app-height,100dvh);padding-left:var(--sidebar-w);background:var(--paper)}
#userAdminScreen[hidden],#userAdminScreen [hidden],#userDetailDialog [hidden]{display:none!important}
#userAdminScreen.admin-sidebar-collapsed{padding-left:0}
.user-admin-sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar-w);padding:8px;display:flex;flex-direction:column;gap:4px;background:var(--paper);border-right:1px solid var(--line-soft);z-index:51}
.user-admin-sidebar .sidebar-header{margin-bottom:16px}
.user-admin-private{padding:18px 12px;margin-top:auto;font-size:12px;line-height:1.9;color:var(--ink-3);border-top:1px solid var(--line-soft)}
.user-admin-backdrop{position:fixed;inset:0;background:rgba(16,17,18,.12);z-index:50}
.user-admin-main{display:flex;flex-direction:column;height:100%;min-width:0}
.user-admin-toolbar{position:static;display:flex;flex:none;align-items:center;justify-content:flex-start;gap:16px;min-height:56px;padding:8px 24px;border-bottom:1px solid var(--line-soft);background:var(--paper);font-size:13px;color:var(--ink-3)}
.user-admin-toolbar>#userAdminReturn{margin-left:auto;font-size:13px;white-space:nowrap}
#userAdminToggle{display:none;place-items:center;width:36px;height:36px;font-size:18px}
.admin-sidebar-collapsed #userAdminToggle{display:grid}
.user-admin-content{flex:1;overflow:auto;min-height:0;padding:clamp(28px,4vw,56px) clamp(22px,4vw,56px) 56px}
.user-admin-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:0 0 36px}
.user-admin-heading .overline{font-size:10px;color:var(--ink-3);margin-bottom:12px}
.user-admin-heading h1{font-size:28px;line-height:1.5;font-weight:400;letter-spacing:0;margin:0 0 10px}
.user-admin-heading p:not(.overline){font-size:13px;line-height:1.85;color:var(--ink-2);margin:0}
.user-admin-heading>.pill{white-space:nowrap;font-size:13px}
.user-admin-filters{display:grid;grid-template-columns:minmax(140px,1fr) 150px 130px auto;gap:14px;align-items:end;margin-bottom:18px}
#userAdminScreen label,#userDetailDialog label,#userCreateDialog label{display:flex;flex-direction:column;gap:8px;font-size:12px;line-height:1.7;color:var(--ink-2);margin-bottom:16px}
.user-admin-filters label{margin-bottom:0!important}
#userAdminScreen input,#userAdminScreen select,#userDetailDialog select,#userCreateDialog input,#userCreateDialog select{min-width:0;max-width:100%;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--paper);color:var(--ink-body);font:inherit;font-size:14px;line-height:1.6;padding:10px 12px}
#userAdminScreen input:focus,#userAdminScreen select:focus,#userDetailDialog select:focus,#userCreateDialog input:focus,#userCreateDialog select:focus{outline:2px solid var(--ink-4);outline-offset:2px}
.user-admin-filters>.pill{height:43px;font-size:13px}
.user-admin-status{min-height:24px;margin:12px 0;font-size:12px;color:var(--ink-2);line-height:1.8}
.user-admin-list{overflow-x:auto;max-width:100%;border-block:1px solid var(--line-soft)}
.user-admin-list table{width:100%;min-width:860px;text-align:left;border-collapse:collapse;font-size:12px;line-height:1.7}
.user-admin-list th,.user-admin-list td{padding:18px 14px 18px 0;border-bottom:1px solid var(--line-soft);font-weight:400;vertical-align:middle;white-space:nowrap}
.user-admin-list th{font-size:11px;color:var(--ink-3)}
.user-admin-list tr:last-child td{border-bottom:0}
.user-admin-list th:first-child{min-width:150px}
.user-admin-list .quiet{font-size:12px}
.user-name-button{display:block;max-width:210px;overflow:hidden;text-overflow:ellipsis;font-size:14px;text-align:left;line-height:1.8;color:var(--ink)}
.user-name-button:hover{text-decoration:underline;text-underline-offset:4px}
.user-name-secondary{display:block;color:var(--ink-3);font-size:11px}
.user-admin-empty{padding:42px 12px;text-align:center;font-size:13px;color:var(--ink-3)}
.user-admin-pagination{display:flex;align-items:center;gap:10px;margin:22px 0;font-size:12px;color:var(--ink-3)}
.user-admin-pagination>span{margin-right:auto}
.user-admin-pagination button{font-size:12px}
.user-admin-config{max-width:560px}
#userAdminScreen .user-admin-check{flex-direction:row;align-items:center;gap:10px;margin:22px 0}
#userAdminScreen .user-admin-check input{width:16px;height:16px;accent-color:var(--ink)}
#userDetailDialog,#userCreateDialog{width:min(520px,calc(100vw - 24px));padding:0;max-height:calc(var(--app-height,100dvh) - 24px);overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg)}
.user-detail-panel{padding:32px}
.user-detail-panel h2{font-size:20px;font-weight:400;letter-spacing:0}
.user-detail-panel .settings-header{margin-bottom:24px}
.user-detail-panel .quiet{font-size:12px}
.user-detail-panel .account-profile{grid-template-columns:90px minmax(0,1fr);font-size:12px;gap:12px 18px}
.user-detail-panel form{border-top:1px solid var(--line-soft);padding-top:24px}
.user-admin-entry{white-space:nowrap}
@media(min-width:821px) and (max-width:1279px){#userAdminScreen{--sidebar-w:280px}}
@media(max-width:1023px){.user-admin-filters{grid-template-columns:1fr 1fr}.user-admin-filters>label:first-child{grid-column:1/-1}}
@media(max-width:820px){
 #userAdminScreen{padding-left:0}
 .user-admin-sidebar{width:min(304px,calc(100vw - 48px));box-shadow:8px 0 40px rgba(16,17,18,.07)}
 .user-admin-toolbar{padding-inline:14px;gap:10px}
 .user-admin-toolbar>span{font-size:12px}
 .user-admin-content{padding:28px 20px 42px}
 .user-admin-heading{align-items:flex-start;flex-direction:column;gap:20px;margin-bottom:28px}
 .user-admin-heading h1{font-size:25px}
 .user-admin-filters{gap:12px}
 .user-admin-filters>.pill{grid-column:1/-1;justify-content:center}
 #userAdminScreen input,#userAdminScreen select,#userCreateDialog input,#userCreateDialog select,#userDetailDialog select{font-size:16px}
 .user-admin-pagination{flex-wrap:wrap}
 .user-admin-pagination>span{width:100%}
 .user-detail-panel{padding:26px 22px}
}
#authDialog [hidden]{display:none!important}
.auth-profile-editor{border-block:1px solid var(--line-soft);padding:14px 0;margin:0 0 22px;font-size:13px;color:var(--ink-2)}
.auth-profile-editor summary{cursor:pointer;min-height:24px;line-height:1.8}
.auth-profile-editor form{padding-top:4px}
.auth-profile-editor .pill{margin-top:18px;font-size:13px}