/* DSH Search — UI */
:root{
  --bg:#07090e; --fg:#e8edf6;
  --panel:rgba(255,255,255,.035); --panel2:rgba(255,255,255,.065);
  --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.16);
  --dim:#8e9bb0; --dim2:#68758a;
  --accent:#4f8cff; --accent2:#22d3ee; --ok:#34d399; --warn:#fbbf24; --bad:#f87171;
  --shadow:0 30px 70px -30px rgba(0,0,0,.85);
  --r:18px;
}
[data-theme="light"]{
  --bg:#f6f8fc; --fg:#0f1728;
  --panel:rgba(255,255,255,.8); --panel2:#fff;
  --line:rgba(15,25,45,.10); --line2:rgba(15,25,45,.18);
  --dim:#56657c; --dim2:#8492a6;
  --accent:#2563eb; --accent2:#0891b2;
  --shadow:0 22px 50px -26px rgba(26,42,70,.28);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:15px; line-height:1.65; -webkit-font-smoothing:antialiased;
  display:flex; flex-direction:column; min-height:100vh; overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
input{font:inherit;color:inherit}

/* ── 背景 ── */
.aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(100px);opacity:.55}
.b1{width:620px;height:620px;left:-14%;top:-20%;background:radial-gradient(circle,#1d4ed8 0,transparent 70%)}
.b2{width:520px;height:520px;right:-12%;top:2%;background:radial-gradient(circle,#0e7490 0,transparent 70%);opacity:.3}
.b3{width:760px;height:760px;left:28%;bottom:-46%;background:radial-gradient(circle,#4f46e5 0,transparent 70%);opacity:.2}
[data-theme="light"] .blob{opacity:.14}
[data-theme="light"] .b2{opacity:.1}
[data-theme="light"] .b3{opacity:.08}
.grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 10%,transparent 72%);
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 10%,transparent 72%)}
[data-theme="light"] .grid{background-image:linear-gradient(rgba(15,25,45,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,25,45,.035) 1px,transparent 1px)}
[hidden]{display:none!important}

/* ── 顶栏 ── */
.topbar{
  position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;
  padding:14px 22px;border-bottom:1px solid transparent;transition:border-color .2s,background .2s;
}
body[data-view="results"] .topbar{
  border-bottom-color:var(--line);background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(140%) blur(12px);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:650;letter-spacing:-.01em;flex:0 0 auto}
.brand .mark{width:22px;height:22px;color:var(--accent)}
.brand .word{font-size:15px}
.mini{flex:1;display:flex;align-items:center;gap:8px;max-width:520px;
  background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:4px 4px 4px 16px}
.mini input{flex:1;background:none;border:0;outline:0;font-size:14px;min-width:0}
.mini button{width:32px;height:32px;border-radius:50%;border:0;background:var(--accent);color:#fff;
  display:grid;place-items:center;flex:0 0 auto}
.mini button svg{width:17px;height:17px}
.tools{margin-left:auto;display:flex;gap:6px}
.icon{width:34px;height:34px;border-radius:10px;border:1px solid transparent;background:none;
  display:grid;place-items:center;color:var(--dim);transition:.16s}
.icon:hover{background:var(--panel);border-color:var(--line);color:var(--fg)}
.icon svg{width:18px;height:18px}

/* ── 主区 ── */
main{flex:1;position:relative;z-index:1;width:100%;max-width:820px;margin:0 auto;padding:0 22px}

/* ── Hero ── */
.hero{padding:clamp(38px,9vh,104px) 0 64px;text-align:center;animation:fade .5s ease both}
@keyframes fade{from{opacity:0}to{opacity:1}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--dim2);margin-bottom:20px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 18%,transparent)}
.hero h1{font-size:clamp(30px,5.4vw,46px);line-height:1.15;margin:0 0 14px;letter-spacing:-.03em;font-weight:700}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin:0 auto 30px;max-width:470px;color:var(--dim);font-size:14.5px}

.searchbox{
  display:flex;align-items:center;gap:10px;padding:6px 6px 6px 18px;
  background:var(--panel);border:1px solid var(--line2);border-radius:var(--r);
  box-shadow:var(--shadow);transition:border-color .18s,box-shadow .18s,background .18s;
  max-width:660px;margin:0 auto;
}
.searchbox:focus-within{border-color:color-mix(in srgb,var(--accent) 62%,transparent);
  box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 12%,transparent),var(--shadow)}
.searchbox .lens{width:20px;height:20px;color:var(--dim2);flex:0 0 auto}
.searchbox input{flex:1;min-width:0;background:none;border:0;outline:0;font-size:16px;padding:14px 0}
.searchbox input::placeholder{color:var(--dim2)}
.searchbox input::-webkit-search-cancel-button{-webkit-appearance:none}
.go{display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;border:0;border-radius:13px;
  padding:0 18px;height:46px;font-size:14.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent2) 60%,var(--accent)));
  transition:transform .12s,filter .16s}
.go:hover{filter:brightness(1.08)}
.go:active{transform:scale(.97)}
.go svg{width:17px;height:17px}
.go[disabled]{opacity:.55;pointer-events:none}

.modes{display:inline-flex;gap:4px;margin:16px auto 0;padding:4px;background:var(--panel);
  border:1px solid var(--line);border-radius:999px}
.mode{border:0;background:none;border-radius:999px;padding:7px 16px;font-size:13px;color:var(--dim);
  display:inline-flex;align-items:center;gap:7px;transition:.16s}
.mode small{font-size:10.5px;opacity:.6}
.mode.on{background:var(--panel2);color:var(--fg);box-shadow:0 1px 0 rgba(255,255,255,.05) inset}
[data-theme="light"] .mode.on{background:#fff;box-shadow:0 2px 8px -4px rgba(20,40,80,.2)}

.chips{display:flex;gap:8px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:6px 13px;
  font-size:12.5px;color:var(--dim);transition:.16s}
.chip:hover{border-color:var(--line2);color:var(--fg);background:var(--panel2)}

.recent{margin-top:34px;text-align:left;max-width:660px;margin-left:auto;margin-right:auto}
.recent h4{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim2);
  font-weight:600;margin:0 0 10px 2px}
.recent ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.recent li button{width:100%;text-align:left;border:0;background:none;border-radius:9px;
  padding:8px 10px;font-size:13.5px;color:var(--dim);display:flex;gap:10px;align-items:center}
.recent li button:hover{background:var(--panel);color:var(--fg)}
.recent li .t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.recent li .m{font-size:10.5px;color:var(--dim2);flex:0 0 auto}

/* ── 结果 ── */
.resultwrap{padding:8px 0 80px;animation:fade .35s ease both}
.qhead{margin:12px 0 22px}
.qhead h2{font-size:clamp(21px,3.4vw,27px);margin:0 0 8px;letter-spacing:-.02em;font-weight:650;line-height:1.3}
.qmeta{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--dim2)}
.qmeta b{color:var(--dim);font-weight:600}

.answer{position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r);padding:22px 24px;box-shadow:var(--shadow);margin-bottom:26px;overflow:hidden}
.answer::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--accent),var(--accent2))}
.official{display:flex;align-items:center;gap:10px;margin:0 0 18px;padding:12px 15px;border-radius:12px;
  background:linear-gradient(95deg,color-mix(in srgb,var(--accent) 15%,transparent),transparent 72%);
  border:1px solid color-mix(in srgb,var(--accent) 34%,transparent);transition:.16s}
.official:hover{border-color:color-mix(in srgb,var(--accent) 62%,transparent);
  background:linear-gradient(95deg,color-mix(in srgb,var(--accent) 22%,transparent),transparent 72%)}
.of-badge{font-size:10px;letter-spacing:.08em;padding:2px 7px;border-radius:5px;background:var(--accent);
  color:#fff;font-weight:700;flex:0 0 auto}
.of-host{font-family:ui-monospace,Consolas,monospace;font-size:15px;font-weight:600;
  color:var(--fg);letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.of-go{margin-left:auto;font-size:12px;color:var(--accent);flex:0 0 auto}
.of-tag{font-size:9.5px;padding:1px 5px;border-radius:4px;background:color-mix(in srgb,var(--accent) 20%,transparent);
  color:color-mix(in srgb,var(--accent) 85%,var(--fg));font-weight:700;margin-right:6px}
.answer.loading{min-height:120px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.skel{height:13px;border-radius:6px;background:linear-gradient(90deg,var(--panel2) 25%,
  color-mix(in srgb,var(--panel2) 40%,transparent) 50%,var(--panel2) 75%);
  background-size:200% 100%;animation:shimmer 1.4s linear infinite}
.skel.s1{width:82%}.skel.s2{width:64%}.skel.s3{width:44%}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}

.stage{display:flex;align-items:center;gap:12px;color:var(--dim);font-size:13.5px}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid var(--line2);
  border-top-color:var(--accent);animation:spin .8s linear infinite;flex:0 0 auto}
@keyframes spin{to{transform:rotate(360deg)}}
.elapsed{font-variant-numeric:tabular-nums;color:var(--dim2);font-size:12px;margin-left:auto}

/* markdown */
.md h1,.md h2,.md h3,.md h4{line-height:1.35;margin:22px 0 10px;letter-spacing:-.01em;font-weight:650}
.md h1{font-size:21px}.md h2{font-size:18px}.md h3{font-size:16px}.md h4{font-size:14.5px;color:var(--dim)}
.md h1:first-child,.md h2:first-child,.md h3:first-child,.md p:first-child{margin-top:0}
.md p{margin:0 0 13px}
.md strong{font-weight:650;color:var(--fg)}
.md em{font-style:italic;color:var(--dim)}
.md ul,.md ol{margin:0 0 14px;padding-left:22px}
.md li{margin:4px 0}
.md li::marker{color:var(--dim2)}
.md code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.88em;
  background:var(--panel2);border:1px solid var(--line);border-radius:5px;padding:1px 5px}
.md pre{background:color-mix(in srgb,var(--panel2) 80%,#000);border:1px solid var(--line);
  border-radius:11px;padding:14px 16px;overflow:auto;margin:0 0 14px}
.md pre code{background:none;border:0;padding:0;font-size:12.5px;line-height:1.6}
.md blockquote{margin:0 0 14px;padding:2px 0 2px 14px;border-left:2px solid var(--line2);color:var(--dim)}
.md hr{border:0;border-top:1px solid var(--line);margin:20px 0}
.md a:not(.cite){color:var(--accent);text-decoration:underline;text-underline-offset:2px;
  text-decoration-color:color-mix(in srgb,var(--accent) 35%,transparent)}
.md table{border-collapse:collapse;width:100%;margin:0 0 15px;font-size:13.5px}
.md th,.md td{border:1px solid var(--line);padding:8px 11px;text-align:left;vertical-align:top}
.md th{background:var(--panel2);font-weight:600}
.md tr:nth-child(even) td{background:color-mix(in srgb,var(--panel2) 42%,transparent)}
.cite{display:inline-block;min-width:17px;height:17px;line-height:17px;padding:0 4px;margin:0 1px;
  border-radius:5px;font-size:10.5px;font-weight:600;text-align:center;vertical-align:1px;
  color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent);
  font-variant-numeric:tabular-nums;transition:.14s}
.cite:hover{background:color-mix(in srgb,var(--accent) 26%,transparent);color:var(--fg)}

/* 来源 */
.shead{display:flex;align-items:center;gap:10px;margin:0 0 12px}
.sh-title{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim2);font-weight:600}
.sh-count{font-size:11px;padding:1px 7px;border-radius:999px;background:var(--panel2);
  border:1px solid var(--line);color:var(--dim);font-variant-numeric:tabular-nums}
.ghost{margin-left:auto;border:1px solid var(--line);background:var(--panel);border-radius:9px;
  padding:5px 11px;font-size:12px;color:var(--dim);transition:.16s}
.ghost+.ghost{margin-left:0}
.ghost:hover{color:var(--fg);border-color:var(--line2);background:var(--panel2)}

.sources{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.src{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:12px 12px;border-radius:12px;
  transition:background .16s}
.src:hover{background:var(--panel)}
.src.flash{background:color-mix(in srgb,var(--accent) 10%,transparent);
  box-shadow:0 0 0 1px color-mix(in srgb,var(--accent) 30%,transparent) inset}
.src .num{width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
  font-size:11.5px;font-weight:600;color:var(--dim);background:var(--panel2);
  border:1px solid var(--line);font-variant-numeric:tabular-nums}
.src .body{min-width:0}
.src .title{font-size:14.5px;font-weight:550;line-height:1.45;color:var(--fg);
  display:block;margin-bottom:2px;overflow-wrap:anywhere}
.src:hover .title{color:color-mix(in srgb,var(--accent) 70%,var(--fg))}
.src .url{font-size:12px;color:var(--dim2);display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.src .url .site{color:var(--dim)}
.src .url .path{opacity:.7;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.src .age{font-size:11px;color:var(--dim2);margin-top:3px}

.notfound{text-align:center;padding:40px 0;color:var(--dim)}
.notfound .hint{font-size:12.5px;color:var(--dim2)}

/* ── 页脚 ── */
.foot{position:relative;z-index:1;display:flex;gap:8px;justify-content:center;align-items:center;
  padding:18px 22px 26px;font-size:11.5px;color:var(--dim2)}
.foot .sep{opacity:.5}

/* ── 登录 ── */
.login{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:22px;
  background:color-mix(in srgb,var(--bg) 92%,#000)}
.login[hidden]{display:none}
.loginbox{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--line2);
  border-radius:20px;padding:28px;box-shadow:var(--shadow);text-align:center}
.loginbox .lk{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim2);margin-bottom:14px}
.loginbox h3{margin:0 0 6px;font-size:19px;letter-spacing:-.01em}
.loginbox p{margin:0 0 20px;font-size:13px;color:var(--dim)}
.loginbox input{width:100%;background:var(--panel2);border:1px solid var(--line);border-radius:11px;
  padding:12px 14px;font-size:14px;outline:0;margin-bottom:12px}
.loginbox input:focus{border-color:color-mix(in srgb,var(--accent) 55%,transparent)}
.loginbox button{width:100%;border:0;border-radius:11px;padding:12px;font-size:14px;font-weight:600;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.lerr{min-height:18px;margin-top:10px;font-size:12px;color:var(--bad)}

@media (max-width:680px){
  main{padding:0 15px}
  .topbar{padding:12px 15px;gap:10px}
  .brand .word{display:none}
  .hero{padding:26px 0 40px}
  .searchbox{padding:4px 4px 4px 14px;border-radius:15px}
  .searchbox input{font-size:15px;padding:12px 0}
  .go{padding:0 14px;height:42px}
  .go span{display:none}
  .answer{padding:18px 17px}
  .ghost{padding:4px 9px;font-size:11.5px}
  .shead{gap:7px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}