/* 极简工具界面：一个记认点（品牌字形），其余保持安静 */
:root{
  --ink:#101418;
  --ink-2:#5a646f;
  --ink-3:#8f99a5;
  --line:#e6e9ee;
  --line-2:#d5dae1;
  --surface:#ffffff;
  --rail:#fafbfc;
  --accent:#1a5fd0;
  --accent-ink:#ffffff;
  --accent-wash:#eef3fd;
  --caution:#9a5b12;
  --r:14px;
  --r-sm:9px;
  --pad:clamp(16px,3vw,28px);
  --measure:min(44rem,100%);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--surface);color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.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}
.skip{position:absolute;left:-9999px;top:8px;z-index:60;background:var(--accent);color:var(--accent-ink);padding:8px 14px;border-radius:var(--r-sm)}
.skip:focus{left:12px}

/* shell */
.shell{display:flex;height:100dvh;overflow:hidden}

/* rail */
.rail{
  width:248px;flex:0 0 248px;display:flex;flex-direction:column;
  background:var(--rail);border-right:1px solid var(--line);
  transition:margin-left .2s var(--ease);
}
.rail[data-closed="true"]{margin-left:-248px}
.rail-head{display:flex;align-items:center;justify-content:space-between;padding:14px 12px 10px}
.mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:var(--ink);color:#fff;font-size:15px;font-weight:600;line-height:1;
  letter-spacing:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
.icon-btn{
  width:36px;height:36px;border-radius:var(--r-sm);display:grid;place-items:center;
  color:var(--ink-2);transition:background .15s,color .15s;
}
.icon-btn:hover{background:#eef1f5;color:var(--ink)}
.rail-list{flex:1 1 auto;overflow-y:auto;padding:4px 8px}
.rail-item{
  display:block;width:100%;text-align:left;padding:9px 10px;border-radius:var(--r-sm);
  font-size:14px;color:var(--ink-2);line-height:1.45;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:background .15s,color .15s;
}
.rail-item:hover{background:#eef1f5;color:var(--ink)}
.rail-item[aria-current="true"]{background:var(--surface);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.rail-empty{padding:10px;font-size:13px;color:var(--ink-3)}
.rail-foot{border-top:1px solid var(--line);padding:10px 8px 14px;display:grid;gap:2px}
.rail-link{
  display:block;padding:8px 10px;border-radius:var(--r-sm);font-size:14px;color:var(--ink-2);
  width:100%;text-align:left;transition:background .15s,color .15s;
}
.rail-link:hover{background:#eef1f5;color:var(--ink)}
.plain-link{font-weight:400}
.rail-meta{margin:8px 10px 0;font-size:12px;color:var(--ink-3)}

/* pane */
.pane{flex:1 1 auto;display:flex;flex-direction:column;min-width:0}
.pane-head{
  flex:0 0 54px;display:flex;align-items:center;gap:12px;
  padding:0 var(--pad);border-bottom:1px solid transparent;
}
.status{
  margin:0;display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--ink-2);
}
.led{width:6px;height:6px;border-radius:50%;background:var(--ink-3);flex:0 0 6px}
.status[data-state="ok"] .led{background:#12855a}
.status[data-state="fallback"] .led{background:var(--caution)}
.status[data-state="off"] .led{background:#b4342a}
.status a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}

/* stage */
.stage{flex:1 1 auto;min-width:0;overflow-y:auto;overflow-x:hidden;padding:0 var(--pad);scroll-behavior:smooth}
.intro{
  max-width:var(--measure);margin:0 auto;padding:clamp(24px,7vh,80px) 0 32px;min-width:0;
}
.intro h1{
  margin:0 0 12px;font-size:clamp(22px,3.2vw,31px);font-weight:600;
  line-height:1.35;letter-spacing:-.012em;max-width:22em;overflow-wrap:anywhere;
}
.lede{margin:0 0 26px;color:var(--ink-2);font-size:15px;max-width:34em;overflow-wrap:anywhere}
.picks{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,21rem),1fr));
  gap:1px;background:var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-top:2px;
}
.pick{
  text-align:left;padding:14px 16px 14px 4px;background:var(--surface);
  font-size:14.5px;color:var(--ink-2);line-height:1.5;
  transition:color .15s,padding-left .18s var(--ease),background .15s;
}
.pick:hover{color:var(--ink);padding-left:10px}

/* thread */
.thread{max-width:var(--measure);margin:0 auto;padding:8px 0 28px;display:none}
.thread[data-on="true"]{display:block}
.turn{display:flex;gap:12px;margin-bottom:28px}
.turn.me{justify-content:flex-end}
.turn.me .body{
  max-width:min(34rem,86%);background:var(--accent-wash);border-radius:var(--r) var(--r) 4px var(--r);
  padding:10px 14px;font-size:15px;
}
.turn.ai .body{flex:1 1 auto;min-width:0;padding-top:2px}
.who{
  flex:0 0 26px;width:26px;height:26px;border-radius:7px;display:grid;place-items:center;
  font-size:11px;font-weight:600;background:var(--ink);color:#fff;margin-top:1px;
}
.turn.me .who{display:none}
.body p{margin:0 0 12px;white-space:pre-wrap;overflow-wrap:anywhere}
.body p:last-child{margin-bottom:0}
.sources{
  margin-top:14px;border-top:1px solid var(--line);padding-top:10px;
  font-size:13px;color:var(--ink-2);
}
.sources-head{
  display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);
  margin-bottom:6px;letter-spacing:.01em;
}
.sources ol{margin:0;padding-left:18px}
.sources li{margin:4px 0;line-height:1.5}
.sources .path{color:var(--ink-3);font-size:12px}
.caveat{margin-top:10px;font-size:12.5px;color:var(--caution);display:flex;gap:6px;align-items:flex-start}
.caveat svg{flex:0 0 14px;margin-top:3px}
.dots{display:inline-flex;gap:5px;padding:8px 0}
.dots i{width:5px;height:5px;border-radius:50%;background:var(--ink-3);animation:bob 1.15s infinite}
.dots i:nth-child(2){animation-delay:.14s}
.dots i:nth-child(3){animation-delay:.28s}
@keyframes bob{0%,80%,100%{opacity:.3;transform:translateY(0)}38%{opacity:1;transform:translateY(-3px)}}

/* dock */
.dock{flex:0 0 auto;padding:0 var(--pad) 16px}
.inputwrap{
  max-width:var(--measure);margin:0 auto;display:flex;align-items:flex-end;gap:8px;
  border:1px solid var(--line-2);border-radius:var(--r);padding:8px 8px 8px 15px;
  background:var(--surface);transition:border-color .15s,box-shadow .15s;
}
.inputwrap:focus-within{border-color:#a9c1e6;box-shadow:0 0 0 3px rgba(26,95,208,.08)}
.inputwrap textarea{
  flex:1 1 auto;border:0;outline:0;background:transparent;resize:none;
  font:inherit;line-height:1.6;max-height:180px;padding:5px 0;color:var(--ink);
}
.inputwrap textarea::placeholder{color:var(--ink-3)}
.send{
  flex:0 0 34px;width:34px;height:34px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:var(--ink);color:#fff;transition:background .15s,transform .1s;
}
.send:disabled{background:#c8ced6;cursor:not-allowed}
.send:not(:disabled):hover{background:#000}
.send:not(:disabled):active{transform:scale(.96)}
.fine{max-width:var(--measure);margin:9px auto 0;font-size:12px;color:var(--ink-3);text-align:center}

/* sheet */
.sheet{
  border:0;border-radius:18px;padding:0;width:min(360px,92vw);
  box-shadow:0 24px 64px rgba(16,20,24,.18);
}
.sheet::backdrop{background:rgba(16,20,24,.3)}
.sheet-body{padding:22px}
.sheet h2{margin:0 0 16px;font-size:16px;font-weight:600}
.sheet label{display:grid;gap:6px;font-size:13px;color:var(--ink-2);margin-bottom:12px}
.sheet select{
  font:inherit;padding:9px 10px;border:1px solid var(--line-2);border-radius:var(--r-sm);background:#fff;color:var(--ink);
}
.sheet-actions{display:flex;gap:8px;margin-top:6px}
.sheet-actions button{
  padding:9px 14px;border-radius:var(--r-sm);border:1px solid var(--line-2);font-size:13.5px;
  transition:border-color .15s,color .15s,background .15s;
}
.sheet-actions button:not(:disabled):hover{border-color:var(--ink)}
.sheet-actions button:disabled{opacity:.42;cursor:not-allowed}
.sheet-actions .plain{color:var(--ink-2)}
.score-out{
  display:block;margin:14px 0 0;padding:11px 12px;border-radius:var(--r-sm);
  background:var(--rail);border:1px solid var(--line);font-size:12.5px;white-space:pre-wrap;min-height:20px;
}

/* small screens */
@media (max-width:820px){
  .rail{position:fixed;inset:0 auto 0 0;z-index:40;box-shadow:10px 0 30px rgba(16,20,24,.1)}
  .rail[data-closed="true"]{margin-left:-248px}
  .turn.me .body{max-width:88%}
  .pane-head{padding:0 14px;gap:8px}
  .status{font-size:12.5px;flex-wrap:wrap}
  .stage{padding:0 14px}
  .dock{padding:0 14px 12px}
  .intro{padding:20px 0 24px}
  .intro h1{font-size:22px;max-width:none}
  .lede{font-size:14.5px;max-width:none}
  .picks{grid-template-columns:1fr}
}
.scrim{
  position:fixed;inset:0;background:rgba(16,20,24,.3);z-index:35;
  opacity:0;pointer-events:none;transition:opacity .2s var(--ease);
}
.scrim[data-on="true"]{opacity:1;pointer-events:auto}
@media (min-width:821px){.scrim{display:none}}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}