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th{border-bottom-width:1px}.\[\&_th\]\:border-bottom-style_solid th{border-bottom-style:solid}.\[\&_th\]\:bd-b-c_borderSubtle th{border-bottom-color:var(--colors-border-subtle)}.\[\&_td\]\:bd-b-w_1px td{border-bottom-width:1px}.\[\&_td\]\:border-bottom-style_solid td{border-bottom-style:solid}.\[\&_td\]\:bd-b-c_borderSubtle td{border-bottom-color:var(--colors-border-subtle)}.\[\&_\.cat\]\:mt_2px .cat{margin-top:2px}.\[\&_\.track\]\:h_8px .track,.\[\&_\.fill\]\:h_8px .fill{height:8px}.\[\&_\.rate_\.track\]\:h_6px .rate .track,.\[\&_\.rate_\.fill\]\:h_6px .rate .fill{height:6px}.\[\&_\.tab\]\:mb_-1px .tab{margin-bottom:-1px}.\[\&_\.tab\]\:bd-b-w_2px .tab{border-bottom-width:2px}.\[\&_\.tab\]\:border-bottom-style_solid .tab{border-bottom-style:solid}.\[\&_\.tab\]\:bd-b-c_transparent .tab{border-bottom-color:var(--colors-transparent)}.\[\&_\.tab\.active\]\:bd-b-c_accent 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16px}.\[\@media_\(max-width\:_640px\)\]\:gap_20px{gap:20px}.\[\@media_\(max-width\:_640px\)\]\:flex-wrap_wrap{flex-wrap:wrap}.\[\@media_\(max-width\:_640px\)\]\:flex-d_column{flex-direction:column}.\[\@media_\(max-width\:_640px\)\]\:d_block{display:block}.\[\@media_\(max-width\:_640px\)\]\:grid-tc_1fr{grid-template-columns:1fr}.\[\@media_\(max-width\:_640px\)\]\:left_auto{left:auto}.\[\@media_\(max-width\:_640px\)\]\:right_0{right:var(--spacing-0)}.\[\@media_\(max-width\:_640px\)\]\:ov-x_auto{overflow-x:auto}.\[\&_h1_\.box\]\:\[\@media_\(max-width\:_640px\)\]\:p_2px_8px h1 .box{padding:2px 8px}.\[\&_h1\]\:\[\@media_\(max-width\:_640px\)\]\:gap_6px h1{gap:6px}.\[\&_h1\]\:\[\@media_\(max-width\:_640px\)\]\:fs_24px h1{font-size:24px}.\[\&_h1\]\:\[\@media_\(max-width\:_640px\)\]\:flex-wrap_wrap h1{flex-wrap:wrap}}}:root{--surface: #ffffff;--surface-alt: #f7f8fa;--text-primary: #1a1a1a;--text-secondary: #4b5563;--text-muted: #9ca3af;--border: #d1d5db;--border-subtle: #e5e7eb;--accent: #0062ff;--accent-strong: #0050d6;--accent-soft: #ebf2ff;--success: #16a34a;--success-soft: #eaf7ef;--error: #dc2626;--error-soft: #fdeded;--font-jp: "Noto Sans JP", sans-serif;--font-data: "IBM Plex Mono", monospace;--font-code: "JetBrains Mono", monospace;--font-heading: "Geist", sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--surface);color:var(--text-primary);font-family:var(--font-jp)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}main{padding:32px 120px 64px}.caption-mono{font-family:var(--font-data);font-size:12px;letter-spacing:2px;color:var(--text-muted);text-transform:uppercase}h1.boxed-title{display:flex;gap:8px;align-items:center;font-size:32px;font-weight:700;margin:12px 0}h1.boxed-title .box{background:var(--accent);color:#fff;padding:2px 12px}.method-chip{display:inline-block;border:1px solid var(--border);padding:5px 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48px}.main-zone{flex-direction:column}.rail{width:100%}}@media(max-width:640px){main{padding:16px 16px 40px}.coming-strip{flex-direction:column}h1.boxed-title{font-size:22px;flex-wrap:wrap}.title-row{flex-direction:column;align-items:flex-start;gap:12px}.title-left{flex-wrap:wrap}.number-card{width:52px;height:52px;font-size:20px}.number-row{gap:8px;flex-wrap:wrap}.result-stats{flex-direction:column;width:100%}.result-stat{width:100%}.result-stat+.result-stat{border-left:none;border-top:1px solid var(--border-subtle)}.save-banner{flex-direction:column;align-items:flex-start}}.katex{color:inherit}.math-inline{white-space:nowrap}.math-block{margin:10px 0;overflow-x:auto}.formula-template{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;font-size:1.2rem;margin:12px 0 18px;padding:14px;border:1px solid var(--border-subtle);border-radius:8px}.formula-slot{display:inline-flex;align-items:center;min-width:2.2em;justify-content:center;padding:2px 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