:root{color-scheme:light;--font-main: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--bg: #eef3f1;--bg-elevated: rgba(255, 255, 255, .72);--bg-strong: rgba(255, 255, 255, .94);--text: #10211b;--text-muted: #66736e;--line: rgba(25, 41, 34, .12);--line-strong: rgba(24, 118, 83, .35);--field: rgba(255, 255, 255, .84);--field-hover: rgba(255, 255, 255, .98);--accent: #12b76a;--accent-strong: #079455;--accent-soft: rgba(18, 183, 106, .16);--danger: #e5484d;--shadow: 0 24px 80px rgba(39, 65, 54, .16);--shadow-soft: 0 12px 36px rgba(39, 65, 54, .12);--radius-lg: 24px;--radius-md: 16px;--radius-sm: 10px;--sidebar: clamp(292px, 18vw, 340px);--history: clamp(128px, 8.5vw, 176px)}:root[data-theme=dark]{color-scheme:dark;--bg: #0b1110;--bg-elevated: rgba(18, 27, 25, .72);--bg-strong: rgba(25, 34, 31, .94);--text: #eef8f3;--text-muted: #9aa9a3;--line: rgba(230, 255, 244, .12);--line-strong: rgba(68, 212, 145, .42);--field: rgba(20, 31, 28, .86);--field-hover: rgba(27, 41, 37, .98);--accent: #32d583;--accent-strong: #12b76a;--accent-soft: rgba(50, 213, 131, .18);--shadow: 0 24px 80px rgba(0, 0, 0, .34);--shadow-soft: 0 12px 36px rgba(0, 0, 0, .24)}*{box-sizing:border-box}html,body,#app{min-height:100%}body{margin:0;min-width:1120px;min-height:100vh;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font-main);letter-spacing:0}button,input,select,textarea{font:inherit}button{cursor:pointer}.shell{display:grid;grid-template-columns:var(--sidebar) minmax(620px,1fr) var(--history);height:100vh;padding:16px;gap:14px}.sidebar,.workspace,.history-panel{min-height:0;border:1px solid var(--line);background:var(--bg-elevated);box-shadow:var(--shadow-soft);-webkit-backdrop-filter:blur(22px) saturate(1.2);backdrop-filter:blur(22px) saturate(1.2)}.sidebar{display:flex;flex-direction:column;gap:20px;overflow:auto;padding:24px;border-radius:var(--radius-lg)}.brand-row{display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:12px}.brand-mark{display:grid;width:48px;height:48px;place-items:center;border-radius:16px;background:var(--accent);color:#fff;font-weight:800;box-shadow:0 12px 30px #12b76a47}.brand-row h1{margin:0;font-size:21px;line-height:1.15}.brand-row p{margin:4px 0 0;color:var(--text-muted);font-size:12px;line-height:1.5}.panel-toolbar,.history-head,.topbar,.prompt-actions{display:flex;align-items:center}.panel-toolbar,.history-head{justify-content:space-between}.section-kicker,.history-head span{display:inline-flex;align-items:center;gap:8px;color:var(--text-muted);font-size:13px;font-weight:700}.section-kicker svg,.history-head svg{width:16px;height:16px}.field{display:grid;gap:8px}.field span{display:flex;align-items:center;justify-content:space-between;font-size:15px;font-weight:800}.field a{color:var(--accent-strong);font-size:13px;font-weight:700;text-decoration:none}.select-wrap{position:relative}.select-wrap svg{position:absolute;top:50%;right:14px;width:18px;height:18px;pointer-events:none;transform:translateY(-50%);color:var(--text-muted)}select,input,textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--field);color:var(--text);outline:none;transition:border-color .16s ease,background .16s ease,box-shadow .16s ease}select,input{height:48px;padding:0 16px}select{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding-right:44px}select:hover,input:hover,textarea:hover{background:var(--field-hover)}select:focus,input:focus,textarea:focus{border-color:var(--line-strong);box-shadow:0 0 0 4px var(--accent-soft)}button:disabled,textarea:disabled{cursor:not-allowed;opacity:.52}.workspace{display:grid;grid-template-rows:64px minmax(0,1fr) auto;gap:14px;padding:14px;border-radius:var(--radius-lg)}.topbar{justify-content:space-between}.topbar-actions,.topbar-center{display:flex;align-items:center;gap:10px}.mode-switch{display:flex;gap:4px;padding:5px;border:1px solid var(--line);border-radius:999px;background:color-mix(in srgb,var(--bg-strong) 72%,transparent);box-shadow:inset 0 1px 8px #0000000a}.mode-switch button{min-width:74px;height:40px;border:0;border-radius:999px;background:transparent;color:var(--text-muted);font-weight:800}.mode-switch button.active{background:var(--bg-strong);color:var(--text);box-shadow:0 8px 22px #0000001a}.theme-button,.tool-button,.icon-button,.send-button,.download-main{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:999px;background:var(--field);color:var(--text);transition:transform .16s ease,background .16s ease,border-color .16s ease}.theme-button{gap:8px;height:42px;padding:0 14px;font-weight:800}.theme-button svg,.tool-button svg,.icon-button svg,.send-button svg,.download-main svg{width:18px;height:18px}.download-main{gap:8px;height:42px;padding:0 16px;border-color:var(--line-strong);background:var(--accent);color:#fff;font-weight:800}.download-main:disabled{border-color:var(--line);background:var(--field);color:var(--text-muted);opacity:.62}.icon-button{width:40px;height:40px}.ghost{background:transparent}.only-compact,.compact-toggle{display:none}.theme-button:hover,.tool-button:hover,.icon-button:hover{border-color:var(--line-strong);background:var(--field-hover);transform:translateY(-1px)}.send-button:hover,.download-main:hover{border-color:transparent;background:var(--accent-strong);color:#fff;transform:translateY(-1px)}.download-main:disabled:hover{border-color:var(--line);background:var(--field);color:var(--text-muted);transform:none}.canvas-wrap{display:grid;min-height:0;place-items:center;overflow:hidden;padding:clamp(10px,3vw,42px)}.canvas-stage{position:relative;display:grid;width:100%;max-width:min(100%,calc((100vh - 246px) * var(--preview-ratio, 1)));max-height:100%;place-items:center;overflow:hidden;border:1px 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32px);gap:22px;padding:22px;border-radius:var(--radius-lg)}.admin-nav{display:grid;gap:8px}.admin-nav button{display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);font-weight:800;text-align:left}.admin-nav button.active,.admin-nav button:hover{border-color:var(--line-strong);background:var(--field-hover);color:var(--text)}.admin-nav svg{width:18px;height:18px}.admin-logout{margin-top:auto}.admin-content{display:grid;align-content:start;gap:14px;min-height:calc(100vh - 32px);padding:18px;border-radius:var(--radius-lg);overflow:auto}.admin-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.admin-header h2,.admin-table-panel h3,.admin-form-panel h3{margin:0}.admin-header p{margin:6px 0 0;color:var(--text-muted);font-size:13px}.success-toast{padding:10px 14px;border:1px solid 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.sidebar{padding:16px 12px}.shell.is-left-collapsed .sidebar>:not(.brand-row){display:none}.shell.is-left-collapsed .brand-row{grid-template-columns:1fr;justify-items:center}.shell.is-left-collapsed .brand-row>div:not(.brand-mark),.shell.is-left-collapsed .brand-row .ghost:not(.only-compact){display:none}.shell.is-left-collapsed .only-compact{display:inline-flex}@keyframes pulse{0%{opacity:.44}50%{opacity:.72}to{opacity:.44}}@keyframes orbit-rotate{to{transform:rotate(360deg)}}@media(max-width:1440px){:root{--sidebar: 292px;--history: 124px}.shell{padding:10px;gap:10px}.sidebar{padding:20px}.canvas-wrap{padding:12px}}@media(max-width:1180px){body{min-width:0;overflow:auto}.shell{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(720px,1fr) auto;min-height:100vh;height:auto}.compact-toggle{display:inline-flex}.sidebar{display:none}.shell:not(.is-left-collapsed) .sidebar{display:flex}.history-panel{grid-template-rows:auto auto 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