:root{--color-bg: #f7f8fa;--color-surface: #fff;--color-text: #1a1a2e;--color-text-secondary: #64748b;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--color-primary: #1a1a2e;--color-primary-hover: #2d2d44;--color-accent: #f59e0b;--color-accent-soft: #fef3c7;--color-link: #2563eb;--color-link-hover: #1d4ed8;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .04);--shadow-md: 0 1px 3px 0 rgb(0 0 0 / .06), 0 1px 2px -1px rgb(0 0 0 / .06);--shadow-lg: 0 8px 24px -8px rgb(0 0 0 / .12), 0 2px 6px -3px rgb(0 0 0 / .06);--radius-sm: 8px;--radius-md: 10px;--radius-lg: 14px;--topbar-bg: rgba(247, 248, 250, .85)}[data-theme=dark]{--color-bg: #0f1117;--color-surface: #1a1d27;--color-text: #e2e8f0;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-border: #2d3348;--color-border-light: #1e2235;--color-primary: #818cf8;--color-primary-hover: #a5b4fc;--color-accent: #fbbf24;--color-accent-soft: #2a1f0a;--color-link: #93c5fd;--color-link-hover: #bfdbfe;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .2);--shadow-md: 0 1px 3px 0 rgb(0 0 0 / .3), 0 1px 2px -1px rgb(0 0 0 / .2);--shadow-lg: 0 12px 28px -8px rgb(0 0 0 / .5), 0 4px 8px -4px rgb(0 0 0 / .25);--topbar-bg: rgba(15, 17, 23, .85)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic UI,Yu Gothic,Meiryo,sans-serif;background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.7;min-height:100vh;transition:background .2s ease,color .2s ease}a{color:inherit;text-decoration:none}.topbar{position:sticky;top:0;z-index:50;background:var(--topbar-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}.topbar-inner{max-width:960px;margin:0 auto;padding:0 24px;height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px}.topbar-brand{font-size:.95rem;font-weight:700;color:var(--color-text);letter-spacing:-.01em}.topbar-brand:hover{color:var(--color-primary)}.topbar-right{display:flex;align-items:center;gap:10px}.topbar-nav{display:flex;gap:18px;font-size:.85rem}.topbar-nav a{color:var(--color-text-secondary);transition:color .15s}.topbar-nav a:hover{color:var(--color-text)}@media (max-width: 540px){.topbar-nav{gap:12px;font-size:.78rem}}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;padding:0;border:none;background:transparent;border-radius:8px;color:var(--color-text-secondary);cursor:pointer;transition:background .15s,color .15s}.theme-toggle:hover{background:var(--color-border-light);color:var(--color-text)}.theme-toggle svg{width:18px;height:18px}.theme-toggle-sun{display:none}.theme-toggle-moon,[data-theme=dark] .theme-toggle-sun{display:inline-block}[data-theme=dark] .theme-toggle-moon{display:none}.hero{max-width:960px;margin:0 auto;padding:64px 24px 48px;text-align:center;border-bottom:1px solid var(--color-border)}.hero-title{font-size:1.95rem;font-weight:800;letter-spacing:-.02em;color:var(--color-text);margin-bottom:18px;line-height:1.4}@media (max-width: 540px){.hero{padding:48px 22px 36px}.hero-title{font-size:1.5rem}}.hero-desc{font-size:.92rem;color:var(--color-text-secondary);max-width:540px;margin:0 auto;line-height:1.85}.services{max-width:960px;margin:0 auto;padding:48px 24px 64px;display:grid;grid-template-columns:1fr;gap:18px}@media (min-width: 760px){.services{grid-template-columns:1fr 1fr;gap:20px}}.service-card{display:flex;flex-direction:column;padding:24px 24px 22px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.service-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--color-text-muted)}.service-card-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:12px}.service-card-head h2{font-size:1.2rem;font-weight:800;letter-spacing:-.01em}.service-card-head h2 a{color:var(--color-text);background-image:linear-gradient(transparent 60%,var(--color-accent-soft) 60%);background-size:0% 100%;background-repeat:no-repeat;transition:background-size .25s ease,color .18s;padding:0 1px}.service-card:hover .service-card-head h2 a,.service-card-head h2 a:hover{background-size:100% 100%}.service-card-path{font-size:.74rem;color:var(--color-text-muted);font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;letter-spacing:.02em}.service-card-desc{font-size:.9rem;color:var(--color-text-secondary);line-height:1.85;margin-bottom:14px}.chip-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:16px;padding-top:12px;border-top:1px dashed var(--color-border)}.chip-row-label{font-size:.72rem;color:var(--color-text-muted);margin-right:4px;white-space:nowrap}.chip{display:inline-flex;align-items:center;padding:4px 10px;font-size:.78rem;font-weight:500;color:var(--color-text-secondary);background:var(--color-bg);border:1px solid var(--color-border);border-radius:999px;transition:color .15s,border-color .15s,background .15s}.chip:hover{color:var(--color-text);border-color:var(--color-text-muted);background:var(--color-surface)}.service-card-cta{display:inline-flex;align-items:center;align-self:flex-start;gap:6px;margin-top:auto;font-size:.85rem;font-weight:700;color:var(--color-link);transition:color .15s,gap .18s}.service-card-cta:hover{color:var(--color-link-hover);gap:10px}.service-card-cta svg{width:14px;height:14px;flex-shrink:0}.site-footer{border-top:1px solid var(--color-border);background:var(--color-bg)}.site-footer-inner{max-width:960px;margin:0 auto;padding:28px 24px 36px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.78rem;color:var(--color-text-muted)}.site-footer-copy{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;letter-spacing:.02em}.site-footer-nav{display:flex;gap:14px}.site-footer-nav a{color:var(--color-text-secondary);transition:color .15s}.site-footer-nav a:hover{color:var(--color-text)}@media (max-width: 540px){.site-footer-inner{flex-direction:column;align-items:center;text-align:center}}