/* critical.css — above-the-fold styles for AutonoMath landing. Loaded synchronously in ; the full styles.css is preloaded and swapped in async. Keep this file < 5 KB after gzip. Source: extracted from styles.src.css (do not edit standalone). */ :root { color-scheme: light dark; --accent: #1e3a8a; --accent-hover: #172b6b; --text: #111111; --text-muted: #404040; --border: #e5e5e5; --bg: #ffffff; --bg-alt: #f7f7f8; --danger: #b91c1c; --focus: #1e3a8a; --max-w: 960px; } * { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", sans-serif; font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; word-break: break-word; overflow-wrap: break-word; } a { color: var(--accent); text-decoration: none; } a:hover { text-decoration: underline; } :focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; } .container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; } .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; } .skip-link { position: absolute; top: 0; left: 8px; padding: 10px 14px; background: var(--accent); color: #fff; font-weight: 600; font-size: 14px; border-radius: 0 0 6px 6px; z-index: 100; text-decoration: none; transform: translateY(-110%); transition: transform 0.1s ease; } .skip-link:focus, .skip-link:focus-visible { transform: translateY(0); outline: 2px solid #fff; outline-offset: -4px; } .site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 10; } [id] { scroll-margin-top: 80px; } .header-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; } .brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; } .brand:hover { text-decoration: none; } .brand-mark { display: inline-grid; place-items: center; width: 28px; height: 28px; background: var(--accent); color: #fff; border-radius: 6px; font-size: 13px; letter-spacing: 0.5px; } .brand-name { font-size: 16px; letter-spacing: -0.01em; } .site-nav { display: flex; gap: 22px; font-size: 15px; align-items: center; flex-wrap: wrap; row-gap: 8px; } .site-nav a { color: var(--text); min-height: 44px; padding: 8px 12px; display: inline-flex; align-items: center; } .lang-switch { display: inline-flex; align-items: center; gap: 6px; margin-left: 8px; padding-left: 14px; border-left: 1px solid var(--border); font-size: 13px; font-weight: 600; letter-spacing: 0.04em; } .lang-switch a { color: var(--text-muted); padding: 2px 4px; border-radius: 3px; } .lang-switch a[aria-current="page"] { color: var(--text); background: var(--bg-alt); } .lang-switch .sep { color: var(--border); user-select: none; } .hero { padding: 80px 0 56px; border-bottom: 1px solid var(--border); } .hero h1 { font-size: 44px; line-height: 1.25; letter-spacing: -0.02em; margin: 0 0 16px; font-weight: 800; } .hero-sub { font-size: 20px; color: var(--text); margin: 0 0 18px; font-weight: 500; } .hero-tag { font-size: 16px; color: var(--text-muted); margin: 0 0 32px; max-width: 640px; } .cta-row { display: flex; gap: 12px; flex-wrap: wrap; } .btn { display: inline-block; padding: 12px 22px; border-radius: 6px; font-size: 15px; font-weight: 600; line-height: 1.2; border: 1px solid transparent; cursor: pointer; } .btn-primary { background: var(--accent); color: #fff; } .btn-primary:hover { background: var(--accent-hover); color: #fff; text-decoration: none; } .btn-secondary { background: #fff; color: var(--text); border-color: var(--border); } .section-title { font-size: 28px; letter-spacing: -0.01em; margin: 0 0 28px; font-weight: 700; } .pricing-page { padding: 64px 0; } .pricing-page h1 { font-size: 36px; letter-spacing: -0.02em; margin: 0 0 10px; font-weight: 800; } .pricing-page .lead { font-size: 17px; color: var(--text-muted); margin: 0 0 36px; max-width: 640px; } .legal { padding: 48px 0 64px; } .legal h1 { font-size: 30px; margin: 0 0 8px; font-weight: 800; letter-spacing: -0.01em; } .prefecture-header { margin-bottom: 24px; } .prefecture-header h1 { font-size: 28px; margin-bottom: 8px; } .prefecture-header .byline { color: var(--text-muted); font-size: 13px; } @media (max-width: 768px) { .hero { padding: 48px 0 40px; } .hero h1 { font-size: 32px; } .hero-sub { font-size: 17px; } .section-title { font-size: 22px; } .header-inner { flex-wrap: wrap; gap: 12px; } .site-nav { gap: 16px; font-size: 14px; flex-wrap: wrap; row-gap: 8px; } .site-nav a, .lang-switch a { min-height: 44px; padding: 8px 12px; display: inline-flex; align-items: center; } .cta-row .btn { flex: 1 1 auto; text-align: center; } } @media (max-width: 480px) { .lang-switch { margin-left: 0; padding-left: 10px; } .lang-switch a { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 8px 12px; } .site-nav { gap: 12px; font-size: 13px; row-gap: 6px; } .site-nav a { min-height: 44px; padding: 10px 12px; } .btn { min-height: 44px; padding: 12px 20px; } .cta-row .btn { width: 100%; } } @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; } } @media (prefers-color-scheme: dark) { :root { --accent: #79b8ff; --accent-hover: #a5cdff; --text: #e6edf3; --text-muted: #8b949e; --border: #30363d; --bg: #0d1117; --bg-alt: #161b22; --danger: #f85149; --focus: #79b8ff; } .btn-secondary { background: var(--bg-alt); } .brand-mark { color: #0d1117; } .btn-primary { color: #0d1117; } .btn-primary:hover { color: #0d1117; } .skip-link { color: #0d1117; } }