:root{--color-primary: #667eea;--color-primary-dark: #5a67d8;--color-accent: #764ba2;--color-code: #1e40af;--color-text: #1a1a2e;--color-text-muted: #4a5568;--color-bg: #f8f9fb;--color-bg-card: #ffffff;--color-border: rgba(26, 26, 46, .07);--shadow-sm: 0 1px 3px rgba(102, 126, 234, .06);--shadow-md: 0 4px 12px rgba(102, 126, 234, .08);--shadow-lg: 0 8px 24px rgba(102, 126, 234, .1);--shadow-hover: 0 8px 24px rgba(102, 126, 234, .18);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--transition-fast: .15s ease;--transition-normal: .25s ease;--header-height: 48px}*{box-sizing:border-box;margin:0;padding:0}html{font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}body{background:var(--color-bg);color:var(--color-text);line-height:1.7;min-height:100dvh;overflow-x:hidden;padding-top:var(--header-height);display:flex;flex-direction:column}.layout-main{flex:1}.site-footer{padding:1.5rem 1.5rem 2rem;text-align:center;font-size:.875rem;color:var(--color-text-muted);border-top:1px solid var(--color-border)}.footer-nav{display:flex;justify-content:center;gap:1.5rem;margin-bottom:.5rem}.footer-nav a{color:var(--color-text-muted);text-decoration:none;transition:color var(--transition-fast)}.footer-nav a:hover{color:var(--color-primary)}.footer-copy{margin:0}code{font-family:Source Code Pro,Consolas,Monaco,Courier New,monospace;color:var(--color-code)}.back-link{color:var(--color-primary)!important;transition:color var(--transition-fast)}.back-link:hover{color:var(--color-accent)!important}.article-date{font-size:.875rem;color:var(--color-text-muted);margin-top:.25rem}h1{background-image:none!important;-webkit-text-fill-color:var(--color-text)!important;color:var(--color-text)!important;text-wrap:balance}h2{text-wrap:balance}.page-header{border-image:none!important;border-bottom:1px solid var(--color-border)!important}.article-body h2,.usage-section h2{color:var(--color-text)!important}.article-body p,.article-body ul,.article-body li,.usage-section p{color:var(--color-text-muted)!important}.article-body ul,.article-body ol{padding-left:2rem}.article-body code,.usage-section code{color:var(--color-code)!important;background:#1e40af0f!important}pre code,.article-body pre code,.usage-section pre code{color:#e2e8f0!important;background:none!important}.tool-container{background:var(--color-bg-card)!important;border:1px solid var(--color-border)!important;box-shadow:var(--shadow-sm)!important}.primary-btn{transition:transform var(--transition-normal),box-shadow var(--transition-normal)!important}.primary-btn:hover:not(:disabled){box-shadow:var(--shadow-hover)!important}.primary-btn:active:not(:disabled){transform:scale(.98)!important;box-shadow:var(--shadow-sm)!important}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.skip-link{position:fixed;top:-100%;left:1rem;z-index:1100;padding:.5rem 1rem;background:var(--color-primary);color:#fff;font-size:.875rem;font-weight:600;border-radius:var(--radius-sm);text-decoration:none;opacity:0;transition:top .15s ease,opacity .15s ease}.skip-link:focus{top:.75rem;opacity:1}figure img{cursor:zoom-in}.img-zoom-overlay{position:fixed;inset:0;background:#000000d9;z-index:9999;display:flex;align-items:center;justify-content:center;padding:16px;cursor:zoom-out;animation:imgZoomFadeIn .15s ease}.img-zoom-overlay img{max-width:100%;max-height:100%;object-fit:contain;border-radius:4px;box-shadow:0 8px 32px #00000080;cursor:zoom-out}@keyframes imgZoomFadeIn{0%{opacity:0}to{opacity:1}}.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-height);background:#ffffffeb;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border);z-index:1000;transform:translateY(0);transition:transform .25s ease}.site-header.is-hidden{transform:translateY(-100%)}.site-header-inner{max-width:900px;margin:0 auto;padding:0 1.5rem;height:100%;display:flex;align-items:center;justify-content:space-between}.site-logo{font-size:.95rem;font-weight:700;color:var(--color-text);text-decoration:none;white-space:nowrap;border-left:3px solid var(--color-primary);padding-left:.5rem}.site-logo:hover{color:var(--color-primary)}.site-nav{display:flex;gap:1.5rem;align-items:center}.site-nav a{font-size:.875rem;font-weight:500;color:var(--color-text-muted);text-decoration:none;padding:.25rem 0;border-bottom:1.5px solid transparent;transition:color var(--transition-fast),border-color var(--transition-fast)}.site-nav a:hover{color:var(--color-primary)}.site-nav a.is-active{color:var(--color-primary);border-bottom-color:var(--color-primary)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion: no-preference){.layout-main{animation:fadeInUp .35s ease-out}}@media (max-width: 599px){body{line-height:1.6}h1{font-size:1.4rem!important;line-height:1.4!important}h2{font-size:1.15rem}h3{font-size:1rem}.article-body p,.article-body ul,.article-body li,.usage-section p{font-size:.88rem!important;line-height:1.65!important}.article-body h2,.usage-section h2{font-size:1.15rem!important}.article-date{font-size:.8rem}.site-footer{padding:1rem 1rem 1.5rem;font-size:.8rem}.footer-nav{gap:1rem}}