:root,[data-theme=light]{--color-bg:#f5f3ee;--color-bg-elevated:#edeae3;--color-surface:#fff;--color-surface-hover:#faf8f4;--color-border:rgba(0,0,0,.08);--color-border-hover:rgba(0,0,0,.16);--color-text:#1a1814;--color-text-secondary:#6b6560;--color-text-muted:#9e9890;--color-accent:#b8940a;--color-accent-soft:rgba(184,148,10,.08);--color-accent-glow:rgba(184,148,10,.04);--color-header-bg:rgba(245,243,238,.85);--color-logo-text:#fff;--color-cta-btn-text:#fff;--color-cta-btn-hover:#a0820a}[data-theme=dark]{--color-bg:#141410;--color-bg-elevated:#1a1a16;--color-surface:#1e1e18;--color-surface-hover:#26261e;--color-border:rgba(232,185,49,.08);--color-border-hover:rgba(232,185,49,.18);--color-text:#f0ece4;--color-text-secondary:#8a8478;--color-text-muted:#5a564e;--color-accent:#e8b931;--color-accent-soft:rgba(232,185,49,.1);--color-accent-glow:rgba(232,185,49,.04);--color-header-bg:rgba(20,20,16,.85);--color-logo-text:#0c0c0c;--color-cta-btn-text:#0c0c0c;--color-cta-btn-hover:#d4a82a}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background-color:var(--color-bg);color:var(--color-text);font-family:Inter,Noto Sans JP,system-ui,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s,color .3s}.container{margin:0 auto;max-width:780px;padding:0 24px}.header{backdrop-filter:blur(24px) saturate(180%);-webkit-backdrop-filter:blur(24px) saturate(180%);background:var(--color-header-bg);border-bottom:1px solid var(--color-border);padding:0;position:sticky;top:0;z-index:100}.header-inner{height:60px;justify-content:space-between}.header-inner,.header-logo{align-items:center;display:flex}.header-logo{color:inherit;gap:14px;text-decoration:none}.logo-mark{align-items:center;background:var(--color-accent);border:none;border-radius:4px;color:var(--color-logo-text);display:flex;flex-shrink:0;font-size:15px;font-weight:800;height:36px;justify-content:center;width:36px}.logo-text{color:var(--color-text);font-size:15px;font-weight:700;letter-spacing:2px}.logo-sub,.logo-text{text-transform:uppercase}.logo-sub{font-size:9px;letter-spacing:4px}.logo-sub,.theme-toggle{color:var(--color-text-muted)}.theme-toggle{align-items:center;background:none;border:1px solid var(--color-border);border-radius:4px;cursor:pointer;display:flex;flex-shrink:0;height:40px;justify-content:center;transition:all .3s;width:40px}.theme-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}.theme-toggle svg{height:18px;transition:transform .3s;width:18px}.theme-toggle:hover svg{transform:rotate(15deg)}.jp-line{align-items:center;display:flex;gap:16px;margin:32px 0}.jp-line:after,.jp-line:before{background:var(--color-border);content:"";flex:1;height:1px}.jp-line-dot{background:var(--color-accent);flex-shrink:0;height:6px;transform:rotate(45deg);width:6px}.product-page{padding:56px 0 96px}.product-serial{border:1px solid var(--color-border-hover);color:var(--color-accent);display:inline-block;font-family:SF Mono,Fira Code,monospace;font-size:11px;font-weight:600;letter-spacing:2px;margin-bottom:20px;padding:4px 14px}.product-title{color:var(--color-text);font-size:34px;font-weight:800;letter-spacing:-.5px;line-height:1.2;margin-bottom:10px}.product-category{color:var(--color-text-muted);font-size:13px;letter-spacing:2px;margin-bottom:24px;text-transform:uppercase}.product-description{color:var(--color-text-secondary);font-size:15px;line-height:1.9;margin-bottom:0;max-width:560px}.hero-stats{border:1px solid var(--color-border);display:grid;gap:0;grid-template-columns:repeat(3,1fr);margin-bottom:56px}.hero-stat{padding:28px 24px;position:relative;text-align:center;transition:background 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var(--color-border);color:var(--color-text-secondary);counter-increment:step;font-size:14px;line-height:1.7;padding:16px 22px 16px 60px;position:relative;transition:all .3s}.instructions-list li:last-child{border-bottom:none}.instructions-list li:hover{background:var(--color-accent-glow);color:var(--color-text)}.instructions-list li:before{color:var(--color-accent);content:"0" counter(step);font-family:SF Mono,Fira Code,monospace;font-size:11px;font-weight:600;left:20px;letter-spacing:1px;position:absolute;top:17px}.cta-section{background:var(--color-bg-elevated);border:1px solid var(--color-border);overflow:hidden;padding:56px 32px;position:relative;text-align:center}.cta-section:before{background:linear-gradient(90deg,transparent 10%,var(--color-accent) 50%,transparent 90%);content:"";height:1px;left:0;position:absolute;right:0;top:0}.cta-title{font-size:20px;font-weight:700;letter-spacing:1px;margin-bottom:10px}.cta-text{color:var(--color-text-secondary);font-size:13px;line-height:1.8;margin-bottom:32px;margin-left:auto;margin-right:auto;max-width:380px}.cta-button{align-items:center;background:var(--color-accent);border:1px solid var(--color-accent);color:var(--color-cta-btn-text);cursor:pointer;display:inline-flex;font-size:13px;font-weight:600;gap:8px;letter-spacing:2px;padding:14px 40px;text-decoration:none;text-transform:uppercase;transition:all .3s}.cta-button:hover{background:var(--color-cta-btn-hover);border-color:var(--color-cta-btn-hover)}.cta-button:active{transform:scale(.98)}.footer{border-top:1px solid var(--color-border);color:var(--color-text-muted);font-size:11px;letter-spacing:1px;padding:40px 0;text-align:center}.not-found{padding:120px 0;text-align:center}.not-found h1{color:var(--color-accent);font-size:72px;font-weight:800;letter-spacing:-2px;margin-bottom:12px}.not-found p{color:var(--color-text-secondary);font-size:16px}@media(max-width:600px){.container{padding:0 16px}.hero-stats{grid-template-columns:1fr}.hero-stat:not(:last-child):after{display:none}.hero-stat{border-bottom:1px solid var(--color-border);padding:18px 20px;text-align:left}.hero-stat:last-child{border-bottom:none}.hero-stat-value{font-size:28px}.specs-grid{grid-template-columns:1fr}.spec-item:nth-child(odd){border-right:none}.spec-item{border-bottom:1px solid var(--color-border)}.spec-item:last-child{border-bottom:none}.product-title{font-size:26px}.cta-section{padding:40px 20px}}.divider{align-items:center;display:flex;gap:16px;margin:56px 0}.divider:after,.divider:before{background:var(--color-border);content:"";flex:1;height:1px}