@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Noto+Sans+JP:wght@400;500;600;700;800;900&display=swap";:root{--color-primary: #1d4ed8;--color-primary-light: #3b82f6;--color-primary-dark: #1e40af;--color-bg: #fafbff;--color-bg-secondary: #f0f4ff;--color-bg-elevated: #ffffff;--color-text: #1e293b;--color-text-heading: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--color-accent: #1d4ed8;--color-accent-hover: #1e40af;--color-accent-subtle: #dbeafe;--color-tag-bg: #dbeafe;--color-tag-text: #1e40af;--color-tag-border: #93c5fd;--palette-teal-bg: #ccfbf1;--palette-teal-text: #115e59;--palette-teal-border: #2dd4bf;--palette-purple-bg: #ede9fe;--palette-purple-text: #5b21b6;--palette-purple-border:#8b5cf6;--palette-amber-bg: #fef3c7;--palette-amber-text: #92400e;--palette-amber-border: #f59e0b;--palette-rose-bg: #ffe4e6;--palette-rose-text: #9f1239;--palette-rose-border: #fb7185;--palette-emerald-bg: #d1fae5;--palette-emerald-text: #065f46;--palette-emerald-border:#34d399;--color-code-bg: #0f172a;--color-code-inline-bg: #dbeafe;--color-success: #059669;--color-warning: #d97706;--color-error: #dc2626;--gradient-hero: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 50%, #ede9fe 100%);--gradient-accent: linear-gradient(135deg, #1d4ed8, #7c3aed);--gradient-warm: linear-gradient(135deg, #1d4ed8 0%, #06b6d4 100%)}@media(prefers-color-scheme:dark){:root{--color-primary: #60a5fa;--color-primary-light: #93c5fd;--color-primary-dark: #3b82f6;--color-bg: #0b0f1a;--color-bg-secondary: #111827;--color-bg-elevated: #1e293b;--color-text: #e2e8f0;--color-text-heading: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-border: #1e293b;--color-border-light: #334155;--color-accent: #60a5fa;--color-accent-hover: #93c5fd;--color-accent-subtle: rgba(59, 130, 246, .15);--color-tag-bg: rgba(59, 130, 246, .15);--color-tag-text: #93c5fd;--color-tag-border: #1d4ed8;--palette-teal-bg: rgba(20, 184, 166, .15);--palette-teal-text: #5eead4;--palette-teal-border: #14b8a6;--palette-purple-bg: rgba(139, 92, 246, .15);--palette-purple-text: #c4b5fd;--palette-purple-border:#8b5cf6;--palette-amber-bg: rgba(245, 158, 11, .15);--palette-amber-text: #fcd34d;--palette-amber-border: #f59e0b;--palette-rose-bg: rgba(244, 63, 94, .15);--palette-rose-text: #fda4af;--palette-rose-border: #f43f5e;--palette-emerald-bg: rgba(16, 185, 129, .15);--palette-emerald-text: #6ee7b7;--palette-emerald-border:#10b981;--color-code-bg: #0f172a;--color-code-inline-bg: rgba(59, 130, 246, .15);--gradient-hero: linear-gradient(135deg, rgba(29,78,216,.1) 0%, rgba(124,58,237,.08) 50%, rgba(6,182,212,.06) 100%);--gradient-accent: linear-gradient(135deg, #3b82f6, #8b5cf6);--gradient-warm: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%)}}:root{--font-body: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;--font-heading: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--text-4xl: 2.5rem;--text-5xl: 3.5rem;--leading-tight: 1.3;--leading-normal: 1.6;--leading-relaxed: 1.8;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--font-weight-extrabold: 800}:root{--max-width: 1120px;--max-width-narrow: 720px;--header-height: 72px;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem}:root{--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-2xl: 24px;--radius-full: 9999px;--border-width: 1px}:root{--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.06);--shadow-lg: 0 12px 32px rgba(0,0,0,.08);--shadow-xl: 0 20px 48px rgba(0,0,0,.1);--shadow-card: 0 1px 3px rgba(0,0,0,.03), 0 4px 12px rgba(0,0,0,.04);--shadow-card-hover: 0 8px 24px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.04);--shadow-glow: 0 0 40px rgba(29,78,216,.15)}@media(prefers-color-scheme:dark){:root{--shadow-sm: 0 1px 2px rgba(0,0,0,.3);--shadow-md: 0 4px 12px rgba(0,0,0,.4);--shadow-lg: 0 12px 32px rgba(0,0,0,.5);--shadow-xl: 0 20px 48px rgba(0,0,0,.6);--shadow-card: 0 1px 3px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.2);--shadow-card-hover: 0 8px 24px rgba(0,0,0,.4);--shadow-glow: 0 0 40px rgba(96,165,250,.15)}}:root{--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--transition-spring: .3s cubic-bezier(.34, 1.56, .64, 1)}:root{--header-bg: var(--color-bg-elevated);--header-border: var(--color-border);--header-backdrop: blur(16px) saturate(180%);--card-bg: var(--color-bg-elevated);--card-border: var(--color-border);--card-radius: var(--radius-lg);--card-padding: var(--space-6);--card-shadow: var(--shadow-card);--card-shadow-hover: var(--shadow-card-hover);--hero-bg: var(--gradient-hero);--hero-title-size: var(--text-5xl);--hero-subtitle-color: var(--color-text-secondary);--footer-bg: var(--color-bg-secondary);--footer-text: var(--color-text-muted)}@keyframes fade-in-up{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.scroll-fade-in{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}.scroll-fade-in.is-visible{opacity:1;transform:translateY(0)}.cart-btn{position:relative;display:flex;align-items:center;justify-content:center;background:none;border:none;cursor:pointer;color:var(--color-text-secondary);padding:var(--space-1);transition:color var(--transition-base)}.cart-btn:hover{color:var(--color-text)}.cart-badge{position:absolute;top:-4px;right:-6px;background:var(--color-primary);color:#fff;font-size:10px;font-weight:700;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;line-height:1}.cart-overlay{position:fixed;inset:0;background:#0006;z-index:998;animation:fade-in .2s ease}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.cart-drawer{position:fixed;top:0;right:0;bottom:0;width:min(400px,90vw);background:var(--color-bg);z-index:999;transform:translate(100%);transition:transform .3s cubic-bezier(.34,1.56,.64,1);display:flex;flex-direction:column;box-shadow:-4px 0 24px #0000001f}.cart-drawer.open{transform:translate(0)}.cart-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-5) var(--space-6);border-bottom:var(--border-width) solid var(--color-border-light)}.cart-header h2{font-family:var(--font-heading);font-size:var(--text-lg);font-weight:var(--font-weight-bold);color:var(--color-text-heading);margin:0}.cart-close{background:none;border:none;cursor:pointer;color:var(--color-text-secondary);padding:var(--space-1);border-radius:var(--radius-sm);transition:color var(--transition-base)}.cart-close:hover{color:var(--color-text)}.cart-body{flex:1;overflow-y:auto;display:flex;flex-direction:column}.cart-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);color:var(--color-text-muted);font-size:var(--text-base)}.cart-browse{padding:var(--space-2) var(--space-6);background:var(--gradient-accent);color:#fff!important;border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);font-size:var(--text-sm);text-decoration:none;transition:all var(--transition-base)}.cart-browse:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.cart-items{list-style:none;margin:0;padding:0;flex:1}.cart-item{display:flex;gap:var(--space-3);padding:var(--space-4) var(--space-6);border-bottom:var(--border-width) solid var(--color-border-light)}.cart-item-img{width:64px;height:64px;border-radius:var(--radius-md);overflow:hidden;background:var(--color-bg-secondary);flex-shrink:0}.cart-item-img img{width:100%;height:100%;object-fit:cover}.cart-item-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;opacity:.3}.cart-item-info{flex:1;display:flex;flex-direction:column;gap:var(--space-1);min-width:0}.cart-item-title{font-size:var(--text-sm);font-weight:var(--font-weight-semibold);color:var(--color-text-heading);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cart-item-price{font-size:var(--text-sm);color:var(--color-primary);font-weight:var(--font-weight-bold)}.cart-item-qty{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-1)}.cart-item-qty button{width:28px;height:28px;border-radius:var(--radius-sm);border:var(--border-width) solid var(--color-border);background:var(--color-bg-elevated);color:var(--color-text);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);transition:all var(--transition-fast)}.cart-item-qty button:hover{background:var(--color-accent-subtle);border-color:var(--color-primary)}.cart-item-qty span{font-size:var(--text-sm);font-weight:var(--font-weight-semibold);min-width:24px;text-align:center}.cart-item-remove{margin-left:auto;border:none!important;background:none!important;color:var(--color-text-muted)!important}.cart-item-remove:hover{color:var(--color-error)!important;background:none!important}.cart-footer{padding:var(--space-5) var(--space-6);border-top:var(--border-width) solid var(--color-border-light);display:flex;flex-direction:column;gap:var(--space-3)}.cart-total{display:flex;justify-content:space-between;align-items:center;font-size:var(--text-base);font-weight:var(--font-weight-semibold);color:var(--color-text-heading)}.cart-total-price{font-size:var(--text-xl);font-weight:var(--font-weight-extrabold);color:var(--color-primary)}.cart-checkout-btn{width:100%;padding:var(--space-3) var(--space-6);background:var(--gradient-accent);color:#fff;border:none;border-radius:var(--radius-md);font-weight:var(--font-weight-bold);font-size:var(--text-base);cursor:pointer;transition:all var(--transition-base);box-shadow:var(--shadow-md)}.cart-checkout-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-lg)}.cart-checkout-btn:disabled{opacity:.7;cursor:not-allowed}.cart-clear-btn{width:100%;padding:var(--space-2);background:none;border:none;color:var(--color-text-muted);font-size:var(--text-xs);cursor:pointer;transition:color var(--transition-fast)}.cart-clear-btn:hover{color:var(--color-error)}.atc-btn{width:100%;padding:var(--space-2) var(--space-4);background:var(--gradient-accent);color:#fff;border:none;border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);font-size:var(--text-sm);cursor:pointer;transition:all var(--transition-base);margin-top:var(--space-3)}.atc-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-md)}.atc-added{background:var(--color-success)!important}.atc-disabled{background:var(--color-text-muted)!important;cursor:not-allowed;opacity:.6}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--color-text);background:var(--color-bg);line-height:var(--leading-normal);min-height:100vh;display:flex;flex-direction:column}body.menu-open{overflow:hidden}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-base)}a:hover{color:var(--color-accent-hover)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:2px}::selection{background:var(--color-accent-subtle);color:var(--color-primary-dark)}.container{max-width:var(--max-width-narrow);margin:0 auto;padding:0 var(--space-6);width:100%}.container-wide{max-width:var(--max-width)}main{flex:1;padding:var(--space-12) 0}.site-header{position:sticky;top:0;z-index:100;background:#fafbffd9;backdrop-filter:var(--header-backdrop);-webkit-backdrop-filter:var(--header-backdrop);border-bottom:var(--border-width) solid var(--header-border);height:var(--header-height);display:flex;align-items:center}@media(prefers-color-scheme:dark){.site-header{background:#0b0f1ad9}}.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-6);width:100%;display:flex;justify-content:space-between;align-items:center}.site-title{font-family:var(--font-heading);font-size:var(--text-xl);font-weight:var(--font-weight-bold);color:var(--color-text-heading);display:flex;align-items:center;gap:var(--space-2);transition:color var(--transition-base)}.site-title:hover{color:var(--color-primary)}.site-logo{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;background:var(--gradient-accent);color:#fff;border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:var(--font-weight-extrabold);letter-spacing:-.02em;box-shadow:var(--shadow-sm)}.site-nav{display:flex;align-items:center;gap:var(--space-8)}.site-nav a{color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-weight-medium);padding:var(--space-2) 0;position:relative;transition:color var(--transition-base)}.site-nav a.active{color:var(--color-primary);font-weight:var(--font-weight-semibold)}.site-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient-accent);border-radius:1px;transition:width .3s cubic-bezier(.34,1.56,.64,1)}.site-nav a:hover,.site-nav a.active{color:var(--color-primary)}.site-nav a:hover:after,.site-nav a.active:after{width:100%}.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;padding:var(--space-2);z-index:101}.hamburger{display:block;width:22px;height:2px;background:var(--color-text);position:relative;transition:background var(--transition-base)}.hamburger:before,.hamburger:after{content:"";position:absolute;left:0;width:22px;height:2px;background:var(--color-text);transition:transform var(--transition-base)}.hamburger:before{top:-7px}.hamburger:after{top:7px}.mobile-menu-btn[aria-expanded=true] .hamburger{background:transparent}.mobile-menu-btn[aria-expanded=true] .hamburger:before{transform:translateY(7px) rotate(45deg)}.mobile-menu-btn[aria-expanded=true] .hamburger:after{transform:translateY(-7px) rotate(-45deg)}@media(max-width:768px){.mobile-menu-btn{display:block}.site-nav{position:fixed;inset:0;background:var(--color-bg);flex-direction:column;justify-content:center;gap:var(--space-8);opacity:0;visibility:hidden;transition:opacity var(--transition-slow),visibility var(--transition-slow);z-index:99}.site-nav.nav-open{opacity:1;visibility:visible}.site-nav a{font-size:var(--text-2xl);font-weight:var(--font-weight-semibold)}.site-name{display:none}}.site-footer{background:var(--footer-bg);border-top:var(--border-width) solid var(--color-border);padding:var(--space-16) 0 var(--space-8)}.footer-inner{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-6)}.footer-brand{margin-bottom:var(--space-8)}.footer-logo{display:inline-flex;align-items:center;gap:var(--space-2);font-family:var(--font-heading);font-size:var(--text-lg);font-weight:var(--font-weight-bold);color:var(--color-text-heading);margin-bottom:var(--space-2)}.footer-logo:hover{color:var(--color-primary)}.footer-tagline{color:var(--color-text-muted);font-size:var(--text-sm)}.footer-links{display:flex;gap:var(--space-16);margin-bottom:var(--space-10)}.footer-col{display:flex;flex-direction:column;gap:var(--space-3)}.footer-col h4{font-size:var(--text-xs);font-weight:var(--font-weight-semibold);text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);margin-bottom:var(--space-1)}.footer-col a{color:var(--color-text-secondary);font-size:var(--text-sm)}.footer-col a:hover{color:var(--color-primary)}.footer-bottom{padding-top:var(--space-8);border-top:var(--border-width) solid var(--color-border)}.footer-bottom p{font-size:var(--text-xs);color:var(--color-text-muted)}@media(max-width:640px){.footer-links{gap:var(--space-8)}}