:root{color-scheme:dark;--bg:#0b1120;--card:#111a2e;--card2:#0f172a;--line:rgba(148,163,184,.16);--text:#e5edf7;--muted:#8fa0b8;--soft:#64748b;--accent:#38bdf8;--accent2:#a78bfa;--on-accent:#06202e;--good:#10b981;--warn:#f59e0b;--bad:#ef4444;--r:16px;--shadow:0 16px 40px rgba(0,0,0,.35)}
html[data-theme="light"]{color-scheme:light;--bg:#f4f7fb;--card:#fff;--card2:#f1f5f9;--line:rgba(15,23,42,.1);--text:#0f172a;--muted:#475569;--soft:#64748b;--accent:#0284c7;--accent2:#7c3aed;--on-accent:#fff;--good:#047857;--warn:#b45309;--bad:#b91c1c;--shadow:0 16px 40px rgba(15,23,42,.14)}
@media (prefers-color-scheme:light){html:not([data-theme="dark"]){color-scheme:light;--bg:#f4f7fb;--card:#fff;--card2:#f1f5f9;--line:rgba(15,23,42,.1);--text:#0f172a;--muted:#475569;--soft:#64748b;--accent:#0284c7;--accent2:#7c3aed;--on-accent:#fff;--good:#047857;--warn:#b45309;--bad:#b91c1c;--shadow:0 16px 40px rgba(15,23,42,.14)}}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Noto Sans CJK SC",sans-serif;min-height:100vh;
  padding:0 max(14px,env(safe-area-inset-right)) max(20px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left))}
a{color:var(--accent)}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
button,.btn{font:inherit;cursor:pointer;border:0;border-radius:12px;min-height:44px;padding:0 18px;background:var(--accent);color:var(--on-accent);font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:6px;white-space:nowrap}
button:disabled{opacity:.55;cursor:default}
button.ghost,.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line);font-weight:600}
button.small,.btn.small{min-height:36px;padding:0 12px;font-size:13px}
button.danger{color:var(--bad)}
button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,.btn:focus-within{outline:2px solid var(--accent);outline-offset:2px}
input,select,textarea{font:inherit;color:var(--text);background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;min-height:44px;width:100%;min-width:0}
textarea{resize:vertical;line-height:1.6}
.muted{color:var(--muted)}.small{font-size:13px}
.err{color:var(--bad);font-size:14px;min-height:1em;margin-top:8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
h1{font-size:22px;margin-bottom:8px}h2{font-size:15px;font-weight:700;color:var(--muted);letter-spacing:.03em}

/* 顶栏 */
.top{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:12px;flex-wrap:wrap;max-width:1280px;margin:0 auto;
  padding:max(10px,env(safe-area-inset-top)) 0 10px;background:var(--bg);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;flex:none}
.brand small{font-size:12px;font-weight:600;color:var(--soft)}
.tabs{display:flex;gap:4px;background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:3px}
.tabs a{min-height:36px;display:flex;align-items:center;padding:0 14px;border-radius:9px;color:var(--muted);text-decoration:none;font-weight:700;font-size:14px}
.tabs a[aria-selected="true"]{background:var(--card);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.2)}
.top-actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.theme{position:relative}
#themeBtn{min-width:88px}
.menu{position:absolute;right:0;top:calc(100% + 6px);z-index:20;min-width:140px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px;display:grid;gap:2px;box-shadow:var(--shadow)}
.menu button{background:transparent;color:var(--text);font-weight:600;justify-content:flex-start;min-height:40px;border-radius:8px}
.menu button[aria-checked="true"]{background:var(--card2);color:var(--accent)}
#keyChip{max-width:150px;overflow:hidden;text-overflow:ellipsis}

.wrap{max-width:1280px;margin:16px auto 0}
.foot{max-width:1280px;margin:24px auto 0;color:var(--soft);font-size:12px;text-align:center}

/* 登录 */
.login{max-width:520px;margin:8vh auto 0;padding:26px}
.login p{margin-bottom:16px}
.login form{display:grid;gap:12px}
.check{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.check input{width:18px;height:18px;min-height:0}

/* 额度条 */
.quota{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.chip{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;border:1px solid var(--line);background:var(--card2);color:var(--muted);white-space:nowrap}
.chip.good{color:var(--good);border-color:color-mix(in srgb,var(--good) 40%,transparent)}
.chip.warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 40%,transparent)}
.chip.bad{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 40%,transparent)}
.chip.run{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 40%,transparent)}

/* 创作 */
.studio{display:grid;grid-template-columns:minmax(320px,440px) minmax(0,1fr);gap:14px;align-items:start}
.panel{display:grid;gap:14px;position:sticky;top:76px}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:3px}
.seg button{background:transparent;color:var(--muted);min-height:38px;border-radius:9px}
.seg button[aria-pressed="true"]{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}
.field{display:grid;gap:6px;min-width:0}
.presets{border:1px solid var(--line);border-radius:12px;background:var(--card2)}
.presets>summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;gap:8px;padding:0 12px;font-size:14px;font-weight:700}
.presets>summary::-webkit-details-marker{display:none}
.presets>summary::before{content:"▸";color:var(--accent)}.presets[open]>summary::before{content:"▾"}
.presets>summary em{font-style:normal;font-weight:600;font-size:12px;color:var(--soft);margin-left:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.presets-body{display:grid;gap:10px;padding:0 12px 12px}
.presets-body button{justify-self:start}
.presets-body .btns button{justify-self:auto}
.presets .sub>summary{cursor:pointer;font-size:13px;font-weight:700;color:var(--accent);min-height:36px;display:flex;align-items:center}
.checklist{padding-left:20px;display:grid;gap:4px;font-size:13px;color:var(--muted)}
.xb-warn{color:var(--warn)}
.field>span{font-size:12px;font-weight:700;color:var(--muted);display:flex;justify-content:space-between}
.field em{font-style:normal;font-weight:600;color:var(--soft)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mode-video .img-only,.mode-video .gpt-only{display:none}
.video-only{display:none}.mode-video .video-only{display:grid}
.grok .gpt-only{display:none}
.refs{display:grid;gap:8px;border:1px dashed var(--line);border-radius:12px;padding:12px}
.refs.drag{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent)}
.mode-image .refs{display:none}
.refs-head{display:flex;justify-content:space-between;gap:8px;font-size:12px;font-weight:700;color:var(--muted)}
.refs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:8px}
.refs-grid:empty{display:none}
.ref{position:relative;aspect-ratio:1;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--card2)}
.ref img{width:100%;height:100%;object-fit:cover;display:block}
.ref button{position:absolute;top:4px;right:4px;min-height:24px;width:24px;padding:0;border-radius:999px;background:rgba(0,0,0,.65);color:#fff;font-size:14px}
.refs-actions{display:flex;gap:8px;flex-wrap:wrap}
.submit-row{display:flex;gap:8px}
.submit-row #submitBtn{flex:1;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}

.canvas{min-height:420px;display:grid;align-content:start;gap:12px}
.canvas-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.active{list-style:none;display:grid;gap:8px}
.active li{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.active .p{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}
.active .t{font:600 12px ui-monospace,Menlo,monospace;color:var(--soft)}
.active .e{grid-column:1/-1;color:var(--bad);font-size:13px}
.spin{width:14px;height:14px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--accent);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.results{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.empty{padding:40px 10px;text-align:center}

/* 媒体卡片 */
.media{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--card2);display:grid}
.media .thumb{display:block;width:100%;aspect-ratio:1;object-fit:cover;background:var(--card2);cursor:zoom-in;border:0;padding:0;min-height:0;border-radius:0}
.media .thumb img,.media .thumb video{width:100%;height:100%;object-fit:cover;display:block}
.media .badge{position:absolute;left:8px;top:8px;font-size:11px;font-weight:800;padding:2px 8px;border-radius:999px;background:rgba(0,0,0,.6);color:#fff}
.media .bar{display:flex;gap:4px;padding:6px;flex-wrap:wrap}
.media .bar button{min-height:32px;padding:0 10px;font-size:12px}
.media .meta{padding:0 8px 8px;font-size:12px;color:var(--soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 历史 */
.list-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.list-head button{margin-left:auto}
.hist{list-style:none;display:grid;gap:10px}
.hist li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;display:grid;gap:8px}
.hist .row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.hist .when{margin-left:auto;font-size:12px;color:var(--soft)}
.hist .prompt{font-size:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}
.hist .error{color:var(--bad);font-size:13px;word-break:break-word}
.hist .btns{display:flex;gap:6px;flex-wrap:wrap}
.hist .thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px}
.pager{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:14px;font-size:14px;color:var(--muted)}
.pager:empty{display:none}

/* 作品库 */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.pick .media{cursor:pointer}
.pick .media.sel{outline:3px solid var(--accent);outline-offset:-3px}
.pick .media .thumb{cursor:pointer}

/* 弹层 */
dialog{border:1px solid var(--line);border-radius:16px;background:var(--card);color:var(--text);padding:0;box-shadow:var(--shadow);max-width:min(1100px,96vw);max-height:92vh}
dialog::backdrop{background:rgba(2,6,23,.72)}
.lightbox[open]{display:grid;grid-template-columns:minmax(0,1fr) 300px;width:min(1100px,96vw)}
.lb-media{background:#000;display:flex;align-items:center;justify-content:center;min-height:300px;max-height:92vh}
.lb-media img,.lb-media video{max-width:100%;max-height:92vh;object-fit:contain;display:block}
.lb-side{padding:16px;display:grid;align-content:start;gap:10px;overflow:auto;max-height:92vh}
.lb-prompt{font-size:14px;white-space:pre-wrap;word-break:break-word}
.btns{display:flex;gap:8px;flex-wrap:wrap}
.picker[open]{display:grid;gap:12px;padding:16px;width:min(900px,96vw)}
.picker-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.picker .gallery{max-height:60vh;overflow:auto;grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}
.picker .btns{justify-content:flex-end}

.toast{position:fixed;left:50%;bottom:max(20px,env(safe-area-inset-bottom));transform:translateX(-50%);z-index:50;background:var(--text);color:var(--bg);padding:10px 16px;border-radius:12px;font-weight:600;font-size:14px;box-shadow:var(--shadow);max-width:90vw}

@media (max-width:900px){
  .studio{grid-template-columns:1fr}
  .panel{position:static}
  .lightbox[open]{grid-template-columns:1fr}
  .lb-media{max-height:60vh}.lb-media img,.lb-media video{max-height:60vh}
}
@media (max-width:600px){
  .brand small{display:none}
  .tabs{order:3;width:100%}
  .tabs a{flex:1;justify-content:center}
  .grid2{grid-template-columns:1fr 1fr}
  .results{grid-template-columns:repeat(2,minmax(0,1fr))}
  .gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){.spin{animation:none}}