:root{color-scheme:light;--bg: #f5f7f4;--paper: #ffffff;--paper-soft: #f9fbf8;--ink: #151917;--muted: #69746e;--line: #dfe7df;--line-strong: #c8d7ce;--jade: #006b4f;--jade-ink: #064837;--jade-soft: #e8f4ee;--coral: #f05a3c;--coral-soft: #fff0ec;--gold: #c58a2d;--blue-soft: #edf4ff;--shadow: 0 18px 45px rgba(25, 49, 38, .09);--shadow-soft: 0 8px 24px rgba(22, 32, 28, .06);--radius: 8px}*{box-sizing:border-box}html{min-width:320px;background:var(--bg)}body{margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;background:linear-gradient(180deg,#fffffff5,#f5f7f4f5 42%),radial-gradient(circle at 18% 0%,rgba(0,107,79,.08),transparent 34%),radial-gradient(circle at 88% 10%,rgba(240,90,60,.08),transparent 30%),var(--bg)}button,input{font:inherit}button{cursor:pointer}.app-shell{width:min(1760px,100%);margin:0 auto;padding:14px}.topbar{min-height:72px;display:grid;grid-template-columns:minmax(260px,360px) minmax(280px,1fr) auto auto;align-items:center;gap:18px;padding:14px 18px;background:#ffffffe0;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand-mark{width:42px;height:42px;display:grid;place-items:center;flex:0 0 auto;color:#fff;background:linear-gradient(135deg,var(--jade),#083d32);border-radius:10px;box-shadow:0 10px 22px #006b4f38}.brand h1{margin:0;font-size:21px;line-height:1.18;letter-spacing:0}.brand p{margin:5px 0 0;color:var(--muted);font-size:12px;line-height:1.35}.search-box{height:42px;display:flex;align-items:center;gap:10px;padding:0 13px;background:var(--paper-soft);border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);min-width:0}.search-box input{border:0;outline:0;background:transparent;width:100%;min-width:0;color:var(--ink);font-size:14px}.mode-switch{display:grid;grid-template-columns:repeat(3,minmax(82px,1fr));padding:3px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-soft)}.mode-switch button{height:36px;border:0;border-radius:6px;background:transparent;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:13px;white-space:nowrap}.mode-switch button.active{background:var(--jade);color:#fff;box-shadow:0 8px 18px #006b4f33}.top-actions{display:flex;gap:10px;justify-content:flex-end}.ghost-button,.primary-button,.section-head button,.creative-band button,.outline-head button,.prompt-head button,.cover-copy button{height:40px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 13px;border-radius:var(--radius);border:1px solid 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button{width:100%}.ghost-button,.primary-button{flex:1}.chip-grid,.chip-grid.two{grid-template-columns:1fr}.main-board{padding:12px}.detail-grid{padding:0 12px}.creative-band,.outline-panel,.safety-note{margin-left:12px;margin-right:12px}.cover-frame{margin:12px}.prompt-box,.cover-copy,.timeline{margin-left:12px;margin-right:12px}}