:root{color-scheme:light;--bg: #e4e8f0;--surface: #f5f7fb;--ink: #172033;--muted: #5c6b82;--line: #d5dbe6;--line-strong: #b7c0d0;--accent: #1f4fd8;--accent-ink: #f5f8ff;--shadow: 0 18px 40px rgba(23, 32, 51, .08);--sans: "Segoe UI", "Helvetica Neue", sans-serif;--serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;--mono: "Cascadia Mono", Consolas, "Courier New", monospace;--editor-bg: #ffffff;--editor-fg: #1f2328;--editor-gutter: #f6f8fa;--editor-muted: #8b949e;--editor-chrome: #f3f3f3;--editor-line: #d8dee4;--editor-tab: #ffffff;--code-bg: #f6f8fa;--link: #1f4fd8;--editor-font: 13px;--editor-line-height: 22px;--editor-pad: 12px}:root[data-theme=dark]{color-scheme:dark;--bg: #15181e;--surface: #1c212b;--ink: #e7ebf3;--muted: #a7b3c7;--line: #2c3340;--line-strong: #3d4658;--accent: #8eb0ff;--accent-ink: #101828;--shadow: 0 18px 40px rgba(0, 0, 0, .35);--editor-bg: #1e1e1e;--editor-fg: #d4d4d4;--editor-gutter: #1e1e1e;--editor-muted: #858585;--editor-chrome: #252526;--editor-line: #3c3c3c;--editor-tab: #1e1e1e;--code-bg: #252526;--link: #8eb0ff}*{box-sizing:border-box}[hidden]{display:none!important}html,body{margin:0;min-height:100%}body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.5}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:28px 0 calc(48px + env(safe-area-inset-bottom))}.top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.header-tools{display:flex;align-items:center;gap:8px;flex:0 0 auto}.theme-toggle{border:1px solid var(--line);background:var(--surface);color:var(--ink)}.theme-toggle .icon-sun{display:none}:root[data-theme=dark] .theme-toggle .icon-moon{display:none}:root[data-theme=dark] .theme-toggle 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var(--editor-line);border-radius:8px;overflow:hidden;background:var(--editor-bg)}.ide-tabs{display:flex;align-items:stretch;min-height:35px;background:var(--editor-chrome);border-bottom:1px solid var(--editor-line)}.ide-tab{display:flex;align-items:center;padding:0 14px;background:var(--editor-tab);border-right:1px solid var(--editor-line);color:var(--editor-fg);font-size:13px}.mode{display:flex;align-items:center;gap:2px;margin-left:auto;padding:4px 6px}.mode-button{display:inline-flex;align-items:center;justify-content:center;width:28px;height:26px;padding:0;border:0;border-radius:6px;background:transparent;color:var(--editor-muted)}.mode-button svg{width:16px;height:16px;display:block}.mode-button:hover{color:var(--editor-fg);background:color-mix(in srgb,var(--editor-fg) 8%,transparent)}.mode-button[aria-selected=true]{background:var(--editor-tab);color:var(--link);box-shadow:inset 0 0 0 1px var(--editor-line)}.ide-body{display:grid;grid-template-columns:1fr 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