:root{--paper:#f6f1e8;--paper-deep:#efe7d8;--paper-warm:#faf6ee;--ink:#1a1613;--ink-2:#3a312b;--muted:#6b6159;--muted-2:#8c8278;--rule:#e4dccd;--rule-soft:#ede5d5;--accent:#8b2f1d;--accent-soft:#a84432;--gold:#b08c3f;--gold-soft:#c9a955;--hl:#f3e7c8;--pad-x:48px;--pad-x-tight:28px;--hero-h1:72px;--hero-sub:22px;--empty-h1:56px;--empty-portrait:140px}@media (max-width:768px){:root{--pad-x:20px;--pad-x-tight:20px;--hero-h1:44px;--hero-sub:17px;--empty-h1:34px;--empty-portrait:96px}}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%;background:var(--paper);color:var(--ink);font-family:Plus Jakarta Sans,Noto Sans SC,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}.serif{font-family:Cormorant Garamond,"Noto Serif SC",Songti SC,SimSun,serif}.mono{font-family:JetBrains Mono,ui-monospace,SF Mono,monospace}button{background:none;border:none;cursor:pointer}button,input,textarea{font:inherit;color:inherit}::selection{background:var(--hl);color:var(--ink)}.dot{width:5px;height:5px;background:var(--muted);border-radius:50%;display:inline-block;animation:dotpulse 1.2s ease-in-out infinite}.dot:nth-child(2){animation-delay:.15s}.dot:nth-child(3){animation-delay:.3s}@keyframes dotpulse{0%,60%,to{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-2px)}}.app-shell{min-height:0}.app-shell,.sidebar{display:flex;height:100vh}.sidebar{width:340px;flex:0 0 340px;background:var(--paper-warm);border-right:1px solid var(--rule);flex-direction:column}.hamburger,.sidebar-backdrop{display:none}@media (max-width:768px){.sidebar{position:fixed;top:0;left:0;bottom:0;width:min(86vw,320px);z-index:60;transform:translateX(-100%);transition:transform .25s ease;box-shadow:0 0 40px transparent}.sidebar.open{transform:translateX(0);box-shadow:0 0 40px rgba(0,0,0,.12)}.sidebar-backdrop{display:block;position:fixed;inset:0;background:rgba(26,22,19,.35);z-index:55;opacity:0;pointer-events:none;transition:opacity .25s ease}.sidebar-backdrop.open{opacity:1;pointer-events:auto}.hamburger{display:inline-flex;width:36px;height:36px;border:1px solid var(--rule);background:var(--paper-warm);color:var(--ink);align-items:center;justify-content:center;flex:0 0 auto}}.empty-grid{display:grid;grid-template-columns:220px 1fr;grid-gap:40px;gap:40px;align-items:start;padding-bottom:36px;border-bottom:1px solid var(--rule)}.empty-portrait-wrap{width:220px;aspect-ratio:3/4;background:var(--paper-deep);border:1px solid var(--rule);display:grid;place-items:center;overflow:hidden}@media (max-width:768px){.empty-grid{grid-template-columns:1fr;gap:20px;padding-bottom:24px}.empty-portrait-wrap{width:120px;aspect-ratio:1/1;border-radius:50%;margin:0 auto}}.chrome-pad{padding-left:var(--pad-x);padding-right:var(--pad-x)}.login-chrome{padding:32px var(--pad-x)}@media (max-width:768px){.login-chrome{padding:20px var(--pad-x)}}.ask-label{display:inline-block}@media (max-width:768px){.ask-label{display:none}}.chat-header-sub{font-size:13px;color:var(--muted);white-space:nowrap;font-style:italic}@media (max-width:768px){.chat-header-title{font-size:22px!important}.chat-header-sub{display:none}.chat-header-meta{font-size:10px!important}}@media (max-width:520px){.kbd-hint{display:none}}.masters-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:16px;gap:16px;width:100%;max-width:960px;margin:0 auto}@media (max-width:768px){.masters-grid{grid-template-columns:repeat(2,1fr);gap:12px}}.master-card{padding:24px 16px 20px;background:var(--paper-warm);border:1px solid var(--rule);text-align:center;transition:background .18s ease,transform .18s ease;display:flex;flex-direction:column;align-items:center;gap:10px;cursor:pointer}.master-card:hover{background:var(--paper-deep);transform:translateY(-2px)}@media (max-width:768px){.master-card{padding:18px 10px 14px;gap:8px}}.toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%);padding:12px 22px;background:var(--ink);color:var(--paper);font-size:13px;letter-spacing:.02em;z-index:100;animation:toast-in .2s ease-out;box-shadow:0 4px 20px rgba(0,0,0,.15)}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}