:root{--color-bg: #f5f7f8;--color-surface: #ffffff;--color-text: #1f2d2b;--color-muted: #6b7c79;--color-accent: #00ccbc;--color-accent-dark: #00a99c;--color-border: #e3e9e8;--radius: 12px;--shadow: 0 2px 12px rgba(0, 0, 0, .06);--header-h: 60px;font-family:system-ui,-apple-system,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{background:var(--color-bg);color:var(--color-text);line-height:1.6}a{color:inherit;text-decoration:none}.app{display:flex;flex-direction:column;min-height:100vh}.main{flex:1}.container{max-width:1120px;margin:0 auto;padding:24px 20px 64px}.header{position:sticky;top:0;z-index:10;height:var(--header-h);display:flex;align-items:center;gap:16px;padding:0 20px;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.header__logo{font-weight:800;font-size:20px;letter-spacing:.02em;display:flex;align-items:center;gap:8px}.header__logo 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14px;font-size:13px}.thumb-picker{display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap}.thumb-picker__preview{width:140px;height:140px;aspect-ratio:1 / 1;flex-shrink:0;border-radius:var(--radius);border:1px solid var(--color-border);background:linear-gradient(135deg,#d9f5f1,#cfe9ef);display:flex;align-items:center;justify-content:center;overflow:hidden;color:var(--color-muted);font-size:13px;text-align:center}.thumb-picker__preview img{width:100%;height:100%;object-fit:cover}.thumb-picker__actions{display:flex;flex-direction:column;gap:8px;min-width:200px}.thumb-picker__hint{font-size:12px;color:var(--color-muted)}.header__user{color:var(--color-muted);font-size:14px;font-weight:600;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{display:inline-block;margin-left:8px;padding:1px 8px;border-radius:999px;font-size:11px;font-weight:600;vertical-align:middle}.badge--private{background:#f2e8ff;color:#7a4dbf;border:1px solid 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48px}.hero{padding:32px 16px}.hero h1{font-size:24px}.footer{padding:16px 12px}.footer__links{flex-wrap:wrap;gap:6px 12px}.code-block{padding:12px;font-size:12px}.table{display:block;width:100%;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}.thumb-picker{flex-direction:column;align-items:center;text-align:center}.thumb-picker__actions{width:100%;align-items:center}}