@property --scroll-progress{syntax:"<percentage>";inherits:false;initial-value:0%}*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-primary-light:#eff6ff;--color-accent:#f59e0b;--color-accent-light:#fffbeb;--color-bg:#f8fafc;--color-bg-card:#ffffff;--color-text:#1e293b;--color-text-muted:#64748b;--color-border:#e2e8f0;--cat-lighting:#f59e0b;--cat-security:#10b981;--cat-speaker:#8b5cf6;--cat-sensor:#06b6d4;--cat-network:#6366f1;--cat-appliance:#ec4899;--cat-basics:#0ea5e9;--cat-setup:#14b8a6;--cat-column:#a855f7;--font-base:17px;--line-height:1.8;--letter-spacing:0.02em;--space-xs:0.5rem;--space-sm:1rem;--space-md:1.5rem;--space-lg:2.5rem;--space-xl:4rem;--max-width:1100px;--radius:8px}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}html{font-size:var(--font-base);scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-body),"Noto Sans JP",sans-serif;color:var(--color-text);background:var(--color-bg);line-height:var(--line-height);letter-spacing:var(--letter-spacing);min-height:100dvh;display:flex;flex-direction:column}.scroll-progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));z-index:200;transition:width .1s linear;border-radius:0 2px 2px 0}a{color:var(--color-primary);text-decoration:none;transition:color .25s ease,opacity .25s ease}a:focus-visible,a:hover{color:var(--color-primary-dark);text-decoration:underline}:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px;border-radius:3px}img{max-width:100%;height:auto;display:block}.site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(20px) saturate(1.2);-webkit-backdrop-filter:blur(20px) saturate(1.2);border-bottom:1px solid rgba(226,232,240,.7);padding:0;position:-webkit-sticky;position:sticky;top:0;z-index:100;box-shadow:0 1px 3px rgba(0,0,0,.04);transition:box-shadow .3s ease;& .header-inner{max-width:var(--max-width);margin:0 auto;display:flex;flex-direction:row;align-items:center;justify-content:space-between;padding:.65rem var(--space-md);gap:var(--space-md)}}.site-logo{font-family:var(--font-heading),"Inter",sans-serif;font-size:1.4rem;font-weight:700;color:var(--color-primary);text-decoration:none;white-space:nowrap;display:inline-flex;align-items:center;gap:.55rem;line-height:1.3;letter-spacing:-.02em;transition:color .25s ease;flex-shrink:0;& .kurahack-logo-icon{transition:transform .3s ease}& .site-logo-text{background:linear-gradient(135deg,var(--color-primary) 0,var(--color-primary-dark) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}&:hover{color:var(--color-primary-dark);text-decoration:none;& .kurahack-logo-icon{transform:scale(1.08)}}}.global-nav{flex:1 1;display:flex;justify-content:flex-end;& ul{list-style:none;display:flex;align-items:center;gap:.15rem;flex-wrap:nowrap}& a{color:var(--color-text);font-size:.88rem;font-weight:500;padding:.4rem .75rem;border-radius:var(--radius);transition:background .25s ease,color .25s ease;position:relative;white-space:nowrap;&:after{content:"";position:absolute;bottom:2px;left:50%;width:0;height:2px;background:var(--color-primary);transition:width .3s ease,left .3s ease;border-radius:1px}&:focus-visible,&:hover{background:var(--color-primary-light);color:var(--color-primary-dark);text-decoration:none;&:after{width:60%;left:20%}}}}.site-footer{background:linear-gradient(180deg,#0f172a,#0c1322);color:rgba(255,255,255,.65);margin-top:auto;font-size:.88rem;line-height:1.7;border-top:3px solid var(--color-primary);position:relative;& a{color:rgba(255,255,255,.8);transition:color .25s ease;text-decoration:none;&:hover{color:#fff;text-decoration:none}}}.footer-inner{max-width:var(--max-width);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;grid-gap:var(--space-lg);gap:var(--space-lg);padding:var(--space-xl) var(--space-md) var(--space-lg)}.footer-about{& p{margin-top:var(--space-sm);font-size:.85rem;line-height:1.8;color:rgba(255,255,255,.55)}}.footer-logo{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-heading),"Inter",sans-serif;font-size:1.2rem;font-weight:700;color:#fff!important;text-decoration:none!important;& .kurahack-logo-icon path[fill="#2563eb"][opacity="0.1"]{fill:rgba(255,255,255,.15)}}.footer-col-title{font-family:var(--font-heading),"Inter",sans-serif;font-size:.82rem;font-weight:700;color:rgba(255,255,255,.4);letter-spacing:.08em;text-transform:uppercase;margin-bottom:var(--space-sm)}.footer-links{list-style:none;display:flex;flex-direction:column;gap:.55rem;& a{font-size:.88rem;position:relative;padding-left:0;transition:color .2s ease,padding-left .2s ease;&:hover{padding-left:.3rem}}}.footer-bottom{max-width:var(--max-width);margin:0 auto;padding:var(--space-md) var(--space-md);border-top:1px solid rgba(255,255,255,.08);text-align:center;font-size:.8rem;color:rgba(255,255,255,.35)}.main-content{flex:1 1;width:100%;animation:fadeIn .6s ease-out}.content-inner{max-width:var(--max-width);margin:0 auto;padding:var(--space-lg) var(--space-md)}.hero{text-align:center;padding:calc(var(--space-xl) + 1rem) var(--space-md) 0;background:linear-gradient(135deg,#2563eb,#1d4ed8 60%,#1e40af);position:relative;padding-bottom:calc(var(--space-xl) + 48px);overflow:hidden;color:#fff;&:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:64px;background:var(--color-bg);-webkit-clip-path:polygon(0 100%,100% 100%,100% 0,0 70%);clip-path:polygon(0 100%,100% 100%,100% 0,0 70%)}}.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 0),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 0);background-size:40px 40px;mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,black 20%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,black 20%,transparent 80%);pointer-events:none}.hero-inner{max-width:var(--max-width);margin:0 auto;position:relative;z-index:1}.hero-eyebrow{display:inline-flex;align-items:center;gap:.45rem;font-size:.78rem;color:rgba(255,255,255,.9);letter-spacing:.12em;padding:.35rem 1rem;background:rgba(255,255,255,.12);border-radius:999px;border:1px solid rgba(255,255,255,.18);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.hero h1,.hero-eyebrow{font-family:var(--font-heading),"Inter",sans-serif;font-weight:700;margin-bottom:var(--space-md)}.hero h1{font-size:2.6rem;color:#fff;line-height:1.35;letter-spacing:-.02em}.hero-highlight{display:inline;position:relative;color:var(--color-accent)}.hero-description{font-size:1.05rem;color:rgba(255,255,255,.8);max-width:640px;margin:0 auto;line-height:1.85}.hero-br-desktop{display:none}@media (min-width:769px){.hero-br-desktop{display:block}}.hero-stats{display:flex;justify-content:center;gap:var(--space-lg);margin-top:var(--space-lg);flex-wrap:wrap}.hero-stat{text-align:center;display:flex;flex-direction:column;align-items:center;gap:.25rem}.hero-stat-icon-wrap{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:.2rem}.hero-stat-icon-accent{background:rgba(245,158,11,.2);border-color:rgba(245,158,11,.3);color:var(--color-accent)}.hero-stat-number{display:block;font-family:var(--font-heading),"Inter",sans-serif;font-size:1.5rem;font-weight:700;color:#fff;line-height:1.2}.hero-stat-text{font-size:1.1rem}.hero-stat-label{font-size:.8rem;color:rgba(255,255,255,.6)}.section{margin-bottom:var(--space-xl)}.section-title{font-family:var(--font-heading),"Inter",sans-serif;font-size:1.5rem;font-weight:700;color:var(--color-primary-dark);margin-bottom:var(--space-md);padding-bottom:var(--space-xs);border-bottom:3px solid var(--color-primary);display:inline-block;position:relative}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));grid-gap:var(--space-md);gap:var(--space-md)}.category-card-wrapper{container-type:inline-size}.category-card{background:var(--color-bg-card);border-left:1px solid var(--color-border);border:1px solid var(--color-border);border-left-width:4px;border-radius:var(--radius);padding:var(--space-md);text-align:left;transition:box-shadow .3s ease,transform .3s ease,border-color .3s ease;display:flex;flex-direction:row;align-items:center;gap:var(--space-md);text-decoration:none;position:relative;overflow:hidden;&:hover{box-shadow:0 8px 24px rgba(0,0,0,.08);transform:translateY(-3px);text-decoration:none;& .category-icon{transform:scale(1.08)}}&:focus-visible{text-decoration:none}}.category-card[data-cat=lighting]{border-left-color:var(--cat-lighting)}.category-card[data-cat=security]{border-left-color:var(--cat-security)}.category-card[data-cat=speaker]{border-left-color:var(--cat-speaker)}.category-card[data-cat=sensor]{border-left-color:var(--cat-sensor)}.category-card[data-cat=network]{border-left-color:var(--cat-network)}.category-card[data-cat=appliance]{border-left-color:var(--cat-appliance)}.category-card[data-cat=basics]{border-left-color:var(--cat-basics)}.category-card[data-cat=setup]{border-left-color:var(--cat-setup)}.category-card[data-cat=column]{border-left-color:var(--cat-column)}.category-card[data-cat=lighting]:hover{border-left-color:#d97706}.category-card[data-cat=security]:hover{border-left-color:#059669}.category-card[data-cat=speaker]:hover{border-left-color:#7c3aed}.category-card[data-cat=sensor]:hover{border-left-color:#0891b2}.category-card[data-cat=network]:hover{border-left-color:#4f46e5}.category-card[data-cat=appliance]:hover{border-left-color:#db2777}.category-card[data-cat=basics]:hover{border-left-color:#0284c7}.category-card[data-cat=setup]:hover{border-left-color:#0d9488}.category-card[data-cat=column]:hover{border-left-color:#9333ea}.category-icon{flex-shrink:0;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#ffffff;line-height:1;transition:transform .3s ease,box-shadow .3s ease;box-shadow:0 2px 8px rgba(0,0,0,.1)}.category-card[data-cat=lighting] .category-icon{background:var(--cat-lighting)}.category-card[data-cat=security] .category-icon{background:var(--cat-security)}.category-card[data-cat=speaker] .category-icon{background:var(--cat-speaker)}.category-card[data-cat=sensor] .category-icon{background:var(--cat-sensor)}.category-card[data-cat=network] .category-icon{background:var(--cat-network)}.category-card[data-cat=appliance] .category-icon{background:var(--cat-appliance)}.category-card[data-cat=basics] .category-icon{background:var(--cat-basics)}.category-card[data-cat=setup] .category-icon{background:var(--cat-setup)}.category-card[data-cat=column] .category-icon{background:var(--cat-column)}.category-card[data-cat=lighting]:hover .category-icon{box-shadow:0 4px 14px rgba(245,158,11,.35)}.category-card[data-cat=security]:hover .category-icon{box-shadow:0 4px 14px rgba(16,185,129,.35)}.category-card[data-cat=speaker]:hover .category-icon{box-shadow:0 4px 14px rgba(139,92,246,.35)}.category-card[data-cat=sensor]:hover .category-icon{box-shadow:0 4px 14px rgba(6,182,212,.35)}.category-card[data-cat=network]:hover .category-icon{box-shadow:0 4px 14px rgba(99,102,241,.35)}.category-card[data-cat=appliance]:hover .category-icon{box-shadow:0 4px 14px rgba(236,72,153,.35)}.category-card[data-cat=basics]:hover .category-icon{box-shadow:0 4px 14px rgba(14,165,233,.35)}.category-card[data-cat=setup]:hover .category-icon{box-shadow:0 4px 14px rgba(20,184,166,.35)}.category-card[data-cat=column]:hover .category-icon{box-shadow:0 4px 14px rgba(168,85,247,.35)}.category-text{& h3{font-family:var(--font-heading),"Inter",sans-serif;font-size:1.1rem;font-weight:700;color:var(--color-text);margin-bottom:.2em}& p{font-size:.92rem;color:var(--color-text-muted);line-height:1.6}}.category-arrow{margin-left:auto;flex-shrink:0;color:var(--color-border);transition:color .3s ease,transform .3s ease}.category-card:hover .category-arrow{color:var(--color-primary);transform:translateX(3px)}.about-box{background:var(--color-primary-light);border-left:5px solid var(--color-primary);border-radius:0 var(--radius) var(--radius) 0;padding:var(--space-lg);position:relative;& p{margin-bottom:var(--space-sm);&:last-child{margin-bottom:0}}}.breadcrumb{font-size:.88rem;color:var(--color-text-muted);margin-bottom:var(--space-md);padding:var(--space-xs) 0;& a{color:var(--color-primary);text-decoration:none;&:hover{text-decoration:underline}}& span[aria-hidden]{margin:0 .4em;color:var(--color-border)}}.page-heading{font-family:var(--font-heading),"Inter",sans-serif;font-size:1.8rem;font-weight:700;color:var(--color-primary-dark);margin-bottom:var(--space-xs)}.page-description{font-size:1rem;color:var(--color-text-muted);line-height:1.7}.empty-message{color:var(--color-text-muted);text-align:center;padding:var(--space-xl) 0;font-size:1.05rem}.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:var(--space-md);gap:var(--space-md)}.article-card{display:flex;flex-direction:column;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--color-text);transition:box-shadow .3s ease,transform .3s ease;&:hover{box-shadow:0 6px 20px rgba(0,0,0,.08);transform:translateY(-3px);text-decoration:none;& .article-card__image{transform:scale(1.05)}}}.article-card__image-wrap{width:100%;aspect-ratio:16/9;overflow:hidden}.article-card__image{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,1,.36,1)}.article-card__body{padding:var(--space-md);display:flex;flex-direction:column;gap:.4rem;flex:1 1}.article-card__title{font-size:1.1rem;font-weight:700;line-height:1.5;color:var(--color-text)}.article-card__date{font-size:.85rem;color:var(--color-text-muted)}.article-card__desc{font-size:.92rem;color:var(--color-text-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.hamburger{display:none;background:none;border:none;cursor:pointer;color:var(--color-text);padding:8px;border-radius:var(--radius);min-height:48px;min-width:48px;align-items:center;justify-content:center;z-index:210;position:relative;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.hamburger:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}.menu-backdrop{position:fixed;inset:0;z-index:9998;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:opacity .3s ease}.menu-backdrop--open{opacity:1;pointer-events:auto}.menu-drawer{position:fixed;top:0;right:0;bottom:0;width:min(85vw,360px);z-index:9999;background:#ffffff;box-shadow:-4px 0 24px rgba(0,0,0,.12);transform:translateX(100%);transition:transform .3s cubic-bezier(.16,1,.3,1);display:flex;flex-direction:column;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding-bottom:env(safe-area-inset-bottom,0)}.menu-drawer--open{transform:translateX(0)}.menu-drawer__header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:3px solid var(--color-primary);flex-shrink:0}.menu-drawer__title{font-weight:700;font-size:1.15rem;color:var(--color-primary);font-family:var(--font-heading),"Inter",sans-serif}.menu-drawer__close{display:flex;align-items:center;justify-content:center;background:none;border:none;cursor:pointer;color:#666;padding:8px;min-height:48px;min-width:48px;border-radius:var(--radius);-webkit-tap-highlight-color:transparent;touch-action:manipulation;transition:background .15s}.menu-drawer__close:hover{background:#f0f0f0}.menu-drawer__close:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}.menu-drawer__nav{flex:1 1;padding:8px 0}.menu-drawer__group-title{font-size:.72rem;font-weight:700;color:#999;letter-spacing:.1em;text-transform:uppercase;padding:20px 20px 8px}.menu-drawer__link{display:flex;align-items:center;gap:14px;padding:14px 20px;color:var(--color-text);text-decoration:none;font-size:1rem;font-weight:500;border-left:4px solid transparent;min-height:48px;transition:background .15s;-webkit-tap-highlight-color:transparent}.menu-drawer__link:active,.menu-drawer__link:hover{background:var(--color-primary-light)}.menu-drawer__link:focus-visible{outline:3px solid var(--color-primary);outline-offset:-3px}.menu-drawer__link-icon{flex-shrink:0;display:flex;align-items:center}.menu-drawer__link-label{flex:1 1}.menu-drawer__chevron{color:#ccc;flex-shrink:0}.menu-drawer__footer{padding:20px;text-align:center;font-size:.75rem;color:#aaa;border-top:1px solid var(--color-border);flex-shrink:0}@media (prefers-reduced-motion:reduce){.menu-backdrop,.menu-drawer{transition:none}}@media (max-width:768px){:root{--font-base:17px}.site-header{& .header-inner{padding:8px var(--space-sm)}}.site-logo{font-size:1.15rem;gap:.35rem;& .kurahack-logo-icon{width:20px;height:20px}}.desktop-nav{display:none}.hamburger{display:flex}.hero{padding-top:var(--space-lg);padding-bottom:calc(var(--space-lg) + 24px);&:after{height:30px}& h1{font-size:1.6rem}}.hero-eyebrow{font-size:.72rem;padding:.3rem .9rem}.hero-description{font-size:.92rem}.hero-stats{gap:var(--space-md);margin-top:var(--space-md)}.hero-stat-number{font-size:1.2rem}.hero-stat-icon-wrap{width:34px;height:34px}.category-grid{grid-template-columns:1fr}.category-card{gap:var(--space-sm)}.category-icon{width:44px;height:44px}.about-box{padding:var(--space-md)}.article-grid{grid-template-columns:1fr}.content-inner{padding:var(--space-md) 16px}.section-title{font-size:1.3rem}.page-heading{font-size:1.4rem}.footer-inner{grid-template-columns:1fr;gap:var(--space-lg);padding:var(--space-lg) var(--space-md)}.footer-col-title{margin-bottom:var(--space-xs)}.footer-links{gap:.4rem}}@media (max-width:480px){.site-logo{font-size:1rem}.hero h1{font-size:1.35rem}.hero-description{font-size:.88rem}.content-inner{padding:var(--space-sm) 12px}}.btn-primary{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-heading),"Inter",sans-serif;font-size:1rem;font-weight:700;color:#fff;background:var(--color-primary);padding:.75rem 1.8rem;border-radius:var(--radius);border:none;cursor:pointer;text-decoration:none;transition:background .25s ease,transform .2s ease,box-shadow .25s ease;&:hover{background:var(--color-primary-dark);transform:translateY(-1px);box-shadow:0 4px 14px rgba(37,99,235,.25);color:#fff;text-decoration:none}&:active{transform:translateY(0);box-shadow:none}}.recent-articles{margin-top:var(--space-lg,2.5rem)}.recent-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:1.2rem;gap:1.2rem;margin-top:1rem}.recent-card{background:var(--color-bg-card,#fff);border:1px solid var(--color-border);border-radius:12px;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;text-decoration:none;color:inherit;display:block}.recent-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(37,99,235,.1);border-color:rgba(37,99,235,.2);text-decoration:none}.recent-card-image{width:100%;height:180px;object-fit:cover}.recent-card-body{padding:1rem}.recent-card-cat{font-size:.7rem;font-weight:600;padding:.15rem .5rem;border-radius:999px;display:inline-block;margin-bottom:.4rem}.recent-card-title{font-size:1rem;font-weight:700;margin-bottom:.3rem;line-height:1.4}.recent-card-desc{font-size:.8rem;color:var(--color-text-muted,#666);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.recent-card-date{font-size:.7rem;color:var(--color-text-muted,#999);margin-top:.4rem}.recent-empty{text-align:center;padding:2rem;color:var(--color-text-muted);font-size:.9rem}.recent-card-placeholder{width:100%;height:180px;background:var(--color-primary-light,#eff6ff);font-size:2.5rem}.img-modal-overlay,.recent-card-placeholder{display:flex;align-items:center;justify-content:center}.img-modal-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.9);cursor:zoom-out;opacity:0;pointer-events:none;transition:opacity .25s ease}.img-modal-overlay.active{opacity:1;pointer-events:auto}.img-modal-overlay img{max-width:95vw;max-height:90vh;object-fit:contain;border-radius:4px}.img-modal-close{position:absolute;top:16px;right:16px;background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;z-index:10001}