:root{--color-bg:#fff8f0;--color-surface:#fffcf5;--color-surface-strong:#fff;--color-text:#3a3a32;--color-text-secondary:#8c8c80;--color-accent:#e67e50;--color-accent-deep:#c26a44;--color-accent-soft:#fcd5b5;--color-on-accent:#fff;--color-border:#00000014;--color-shadow:#1f1a120f;--color-header-bg:#fff8f0d1;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:56px;--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-xl:32px;--font-app:"LINE Seed JP", "Hiragino Maru Gothic ProN", ui-rounded, -apple-system, "Noto Sans JP", "Segoe UI", sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:var(--color-text);background:var(--color-bg);font-family:var(--font-app);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--color-bg);min-height:100vh;color:var(--color-text);font-family:var(--font-app);letter-spacing:.02em;margin:0;line-height:1.7}h1,h2,h3,p{margin:0}button{font-family:inherit}img{max-width:100%;display:block}.page{flex-direction:column;min-height:100vh;display:flex}.header{z-index:10;background:var(--color-header-bg);-webkit-backdrop-filter:blur(20px)saturate(1.4);border-bottom:1px solid var(--color-border);position:sticky;top:0}.header-inner{max-width:960px;padding:var(--space-md) var(--space-md) var(--space-sm);gap:var(--space-sm);flex-direction:column;align-items:center;margin:0 auto;display:flex}.brand{align-items:center;gap:var(--space-sm);display:flex}.brand-icon{width:28px;height:28px;color:var(--color-accent)}.brand-name{letter-spacing:.04em;font-size:18px;font-weight:700}.tab-bar{gap:var(--space-xs);padding:var(--space-xs);background:var(--color-surface);border:1px solid var(--color-border);scrollbar-width:none;border-radius:999px;max-width:100%;display:flex;overflow-x:auto}.tab-bar::-webkit-scrollbar{display:none}.tab-button{color:var(--color-text-secondary);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:999px;padding:10px 18px;font-size:14px;font-weight:600;transition:color .2s;position:relative}.tab-button:hover{color:var(--color-text)}.tab-button.is-active{color:var(--color-accent-deep)}.tab-button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.tab-pill{border-radius:inherit;background:var(--color-surface-strong);border:1px solid var(--color-border);box-shadow:0 4px 12px var(--color-shadow);position:absolute;inset:0}.tab-label{z-index:1;position:relative}.main{width:100%;max-width:960px;padding:var(--space-xl) var(--space-md) var(--space-2xl);flex:1;margin:0 auto;overflow-x:clip}.section{margin-top:var(--space-2xl)}.section:first-child{margin-top:0}.section-title{letter-spacing:.02em;margin-bottom:var(--space-lg);font-size:24px;font-weight:800}.section-title:after{content:"";background:var(--color-accent);width:40px;height:4px;margin-top:var(--space-sm);border-radius:999px;display:block}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:0 6px 12px var(--color-shadow);padding:var(--space-lg)}.hero{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-2xl) var(--space-lg);text-align:center;align-items:center;gap:var(--space-md);flex-direction:column;display:flex}.hero-icon{width:88px;height:88px;color:var(--color-on-accent);background:linear-gradient(145deg, var(--color-accent), var(--color-accent-deep));border-radius:var(--radius-lg);box-shadow:0 12px 24px var(--color-shadow);padding:18px}.hero-title{letter-spacing:.04em;font-size:34px;font-weight:800}.hero-tagline{color:var(--color-accent-deep);font-size:18px;font-weight:700}.hero-description{max-width:560px;color:var(--color-text-secondary);font-size:15px}.chip-row{justify-content:center;gap:var(--space-sm);flex-wrap:wrap;display:flex}.chip{background:var(--color-accent-soft);color:var(--color-accent-deep);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700}.feature-grid{gap:var(--space-md);grid-template-columns:1fr;display:grid}@media (width>=720px){.feature-grid{grid-template-columns:repeat(2,1fr)}}.feature-card{gap:var(--space-sm);flex-direction:column;display:flex}.feature-icon{border-radius:var(--radius-md);background:var(--color-accent-soft);place-items:center;width:44px;height:44px;font-size:22px;display:grid}.feature-title{font-size:17px;font-weight:700}.feature-text{color:var(--color-text-secondary);font-size:14px}.shot-rail{padding:var(--space-sm) 1px var(--space-md);scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:1px;display:flex;overflow-x:auto}.shot{scroll-snap-align:center;gap:var(--space-sm);flex-direction:column;flex:0 0 220px;display:flex}.shot img{border-radius:var(--radius-lg);border:1px solid var(--color-border);box-shadow:0 10px 24px var(--color-shadow);width:220px}.shot figcaption{color:var(--color-text-secondary);text-align:center;font-size:13px;font-weight:600}.step-list{gap:var(--space-md);grid-template-columns:1fr;display:grid}@media (width>=720px){.step-list{grid-template-columns:repeat(4,1fr)}}.step{gap:var(--space-sm);text-align:center;flex-direction:column;align-items:center;display:flex}.step-number{background:var(--color-accent);width:40px;height:40px;color:var(--color-on-accent);border-radius:50%;place-items:center;font-size:16px;font-weight:800;display:grid}.step-title{font-size:15px;font-weight:700}.step-text{color:var(--color-text-secondary);font-size:13px}.privacy-intro{color:var(--color-text-secondary);margin-bottom:var(--space-lg);font-size:15px}.privacy-list{gap:var(--space-md);flex-direction:column;display:flex}.privacy-card h3{align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm);font-size:17px;display:flex}.privacy-card p{color:var(--color-text-secondary);margin-top:var(--space-sm);font-size:14px}.privacy-card p:first-of-type{margin-top:0}.privacy-updated{margin-top:var(--space-lg);color:var(--color-text-secondary);text-align:right;font-size:13px}.version-card{gap:var(--space-md);flex-direction:column;display:flex}.version-badge{background:var(--color-accent);color:var(--color-on-accent);letter-spacing:.06em;border-radius:999px;align-self:flex-start;padding:6px 14px;font-size:13px;font-weight:800}.version-title{font-size:20px;font-weight:800}.version-list{gap:var(--space-xs);color:var(--color-text-secondary);flex-direction:column;margin:0;padding-left:1.2em;font-size:14px;display:flex}.timeline{gap:var(--space-lg);padding-left:var(--space-lg);flex-direction:column;display:flex;position:relative}.timeline:before{content:"";background:var(--color-accent-soft);border-radius:999px;width:2px;position:absolute;top:6px;bottom:6px;left:7px}.timeline-item{position:relative}.timeline-item:before{content:"";left:calc(-1 * var(--space-lg) + 2px);background:var(--color-accent);width:12px;height:12px;box-shadow:0 0 0 4px var(--color-bg);border-radius:50%;position:absolute;top:8px}.timeline-date{color:var(--color-accent-deep);letter-spacing:.04em;font-size:13px;font-weight:700}.timeline-title{margin-top:var(--space-xs);font-size:16px;font-weight:700}.timeline-text{color:var(--color-text-secondary);font-size:14px}.footer{border-top:1px solid var(--color-border);padding:var(--space-lg) var(--space-md);text-align:center;color:var(--color-text-secondary);gap:var(--space-xs);flex-direction:column;font-size:13px;display:flex}