:root{color-scheme:light;--shell:#eceee9;--panel:#f8f7f3;--surface:#fffefa;--ink:#142026;--muted:#657069;--forest:#3d6646;--forest-dark:#294a34;--sage:#dfe8dc;--amber:#b86f3f;--amber-soft:#f2e2d5;--line:#d8ddd6;--header-height:64px}
html[data-theme="dark"]{color-scheme:dark;--shell:#0d120f;--panel:#131914;--surface:#1a211b;--ink:#edf0e9;--muted:#a2aaa3;--forest:#91b18f;--forest-dark:#c3d5bf;--sage:#253226;--amber:#d59261;--amber-soft:#34261d;--line:#303a31}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;overflow:hidden;background:var(--shell);color:var(--ink);font:14px/1.55 "Segoe UI Variable","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}button,a{font:inherit}button{color:inherit;cursor:pointer}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(61,102,70,.3);outline-offset:3px}
.app-header{position:relative;z-index:10;display:flex;align-items:center;gap:24px;height:var(--header-height);padding:0 22px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--panel) 94%,transparent);backdrop-filter:blur(18px)}
.app-brand{display:flex;align-items:center;gap:9px;min-width:220px;font:600 24px/1 Georgia,"Times New Roman",serif}
.app-brand img{width:36px;height:36px;object-fit:contain}.app-brand small{margin-left:5px;padding-left:12px;border-left:1px solid var(--line);color:var(--muted);font:12px/1.3 "Segoe UI",sans-serif}
.app-header-center{display:flex;align-items:center;gap:7px;margin:auto;color:var(--muted);font-size:12px}.app-header-center i{color:var(--forest)}
.app-header nav{display:flex;align-items:center;justify-content:flex-end;gap:10px;min-width:220px}.quiet-link{padding:9px 10px;color:var(--muted);font-size:12px}.quiet-link:hover{color:var(--ink)}
.extension-link{display:inline-flex;align-items:center;gap:9px;min-height:46px;padding:5px 12px 5px 10px;border:1px solid color-mix(in srgb,var(--amber) 28%,var(--line));border-radius:11px;background:color-mix(in srgb,var(--amber-soft) 42%,var(--surface));box-shadow:0 3px 12px rgba(57,48,32,.05);transition:border-color .18s ease,background .18s ease,transform .18s ease,box-shadow .18s ease}.extension-link>i{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border-radius:8px;background:color-mix(in srgb,var(--amber) 13%,transparent);color:var(--amber);font-size:17px}.extension-link-copy{display:flex;min-width:0;flex-direction:column;line-height:1.25}.extension-link-copy strong{font-size:13px;font-weight:750;white-space:nowrap}.extension-link-copy small{color:var(--muted);font-size:12px;font-weight:500;white-space:nowrap}.extension-link:hover{border-color:color-mix(in srgb,var(--amber) 56%,var(--line));background:color-mix(in srgb,var(--amber-soft) 70%,var(--surface));box-shadow:0 7px 18px rgba(57,48,32,.1);transform:translateY(-1px)}
.extension-link.is-coming-soon{cursor:default;border-style:dashed;background:color-mix(in srgb,var(--amber-soft) 24%,var(--surface));box-shadow:none}.extension-link.is-coming-soon:hover{border-color:color-mix(in srgb,var(--amber) 28%,var(--line));background:color-mix(in srgb,var(--amber-soft) 24%,var(--surface));box-shadow:none;transform:none}
.shell-support{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:0 10px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--muted);font-size:12px;font-weight:650;white-space:nowrap;transition:color .18s ease,background .18s ease,border-color .18s ease}.shell-support i{color:var(--amber);font-size:17px}.shell-support:hover{border-color:var(--line);background:var(--surface);color:var(--ink)}
.app-layout{display:grid;grid-template-columns:272px minmax(0,1fr);height:calc(100% - var(--header-height));transition:grid-template-columns .22s ease}
body.guide-collapsed .app-layout{grid-template-columns:56px minmax(0,1fr)}
.guide-panel{position:relative;display:flex;flex-direction:column;min-width:0;padding:30px 24px 20px;border-right:1px solid var(--line);background:var(--panel);overflow:auto;transition:padding .22s ease}
.guide-eyebrow{color:var(--forest);font:700 12px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.16em}.guide-top h1{margin:12px 0 9px;font:500 27px/1.32 Georgia,"Songti SC","SimSun",serif}.guide-top p{margin:0;color:var(--muted);font-size:12px}
.guide-steps{display:grid;gap:4px;margin:28px 0 0;padding:0;list-style:none}.guide-steps li{display:grid;grid-template-columns:32px minmax(0,1fr);gap:10px;align-items:center;padding:12px 10px;border-radius:10px;color:var(--muted);transition:background .18s,color .18s}.guide-steps li>span{font:700 12px ui-monospace,SFMono-Regular,Consolas,monospace}.guide-steps li div{display:flex;flex-direction:column;min-width:0}.guide-steps strong,.guide-steps small{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.guide-steps strong{font-size:13px}.guide-steps small{color:inherit;font-size:12px}.guide-steps li.active{background:var(--sage);color:var(--forest-dark)}
.guide-note{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;margin-top:24px;padding:14px;border:1px solid color-mix(in srgb,var(--amber) 20%,var(--line));border-radius:11px;background:color-mix(in srgb,var(--amber-soft) 46%,var(--surface))}.guide-note>i{margin-top:2px;color:var(--amber);font-size:18px}.guide-note strong{font-size:12px}.guide-note p{margin:4px 0 0;color:var(--muted);font-size:12px;line-height:1.65}
.web-limits{margin-top:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.web-limits summary{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:13px 2px;cursor:pointer;color:var(--muted);font-size:12px;font-weight:650;list-style:none}.web-limits summary::-webkit-details-marker{display:none}.web-limits[open] summary i{transform:rotate(180deg)}.web-limits summary i{transition:transform .18s}.web-limits p{margin:0;padding:0 2px 14px;color:var(--muted);font-size:12px}
.collapse-guide{display:flex;align-items:center;justify-content:center;gap:7px;width:100%;min-height:38px;margin-top:auto;border:1px solid var(--line);border-radius:9px;background:transparent;color:var(--muted);font-size:12px}.collapse-guide:hover{background:var(--surface);color:var(--ink)}
body.guide-collapsed .guide-panel{padding:16px 9px;overflow:hidden}body.guide-collapsed .guide-top,body.guide-collapsed .guide-steps,body.guide-collapsed .guide-note,body.guide-collapsed .web-limits,body.guide-collapsed .collapse-guide span{display:none}body.guide-collapsed .collapse-guide{margin-top:0;height:38px}
.studio-panel{position:relative;min-width:0;height:100%;padding:14px 16px 0;background:var(--shell)}
.studio-panel iframe{display:block;width:100%;height:100%;border:1px solid var(--line);border-bottom:0;border-radius:15px 15px 0 0;background:var(--panel);box-shadow:0 12px 35px rgba(30,45,35,.08);opacity:0;transition:opacity .25s}
.studio-panel iframe.ready{opacity:1}
.studio-loader{position:absolute;inset:14px 16px 0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:15px 15px 0 0;background:var(--panel);color:var(--muted);transition:opacity .2s}.studio-loader.done{opacity:0;pointer-events:none}.loader-mark{display:grid;place-items:center;width:58px;height:58px;margin-bottom:16px;border-radius:17px;background:var(--surface);box-shadow:0 12px 32px rgba(36,59,43,.12)}.loader-mark img{width:42px;height:42px}.studio-loader strong{color:var(--ink);font-size:14px}.studio-loader small{max-width:360px;margin-top:4px;text-align:center;font-size:12px}.studio-retry{display:inline-flex;align-items:center;justify-content:center;min-height:38px;margin-top:16px;padding:0 16px;border:1px solid var(--forest);border-radius:9px;background:var(--forest);color:#fff;font:650 13px/1 inherit;cursor:pointer}.studio-retry:hover{background:var(--forest-dark)}.studio-retry[hidden]{display:none}.studio-loader.slow .loader-mark{box-shadow:none}
.studio-loader[hidden]{display:none}.mobile-tip{display:none}
@media(max-width:980px){.app-layout{grid-template-columns:220px minmax(0,1fr)}.guide-panel{padding-inline:16px}.app-header-center{display:none}.app-header nav{min-width:0}.app-brand{min-width:0}.quiet-link{display:none}}
@media(max-width:720px){body{overflow:auto}.app-header{height:58px;padding:0 12px}.app-brand{font-size:22px}.app-brand img{width:34px;height:34px}.app-brand small,.extension-link-copy,.shell-support span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.extension-link,.shell-support{width:38px;min-height:38px;padding:0;justify-content:center;border-radius:50%}.extension-link>i{flex-basis:auto;width:auto;height:auto;background:transparent}.app-layout,body.guide-collapsed .app-layout{display:block;height:calc(100vh - 58px)}.guide-panel{display:none}.studio-panel{height:100%;padding:0}.studio-panel iframe{border:0;border-radius:0}.studio-loader{inset:0;border:0;border-radius:0}.mobile-tip{position:fixed;left:12px;right:12px;bottom:12px;z-index:20;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px;align-items:center;padding:10px 12px;border:1px solid #bfc9bf;border-radius:10px;background:#f8faf7;box-shadow:0 12px 30px rgba(25,39,30,.18);color:#526057;font-size:12px}.mobile-tip>i{color:var(--forest)}.mobile-tip button{display:grid;place-items:center;width:28px;height:28px;padding:0;border:0;border-radius:50%;background:transparent}.mobile-tip button:hover{background:#e7ece5}.mobile-tip.dismissed{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}