:root{--color-bg:#fff;--color-bg-alt:#f6f8fb;--color-fg:#10172a;--color-muted:#5b6678;--color-border:#e3e8ef;--color-brand:#2d5fae;--color-brand-dark:#1f4588;--color-brand-tint:#eaf0fb;--font-sans:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "PingFang SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--max-width:1080px}*{box-sizing:border-box}html,body,#root{height:100%}body{font-family:var(--font-sans);color:var(--color-fg);background:var(--color-bg);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0}a{color:inherit}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.button{cursor:pointer;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;gap:8px;height:48px;padding:0 28px;font-size:16px;font-weight:600;text-decoration:none;transition:background-color .15s,border-color .15s,transform .15s;display:inline-flex}.button:active{transform:translateY(1px)}.button--primary{background:var(--color-brand);color:#fff}.button--primary:hover{background:var(--color-brand-dark)}.button--ghost{border-color:var(--color-border);color:var(--color-fg);background:0 0}.button--ghost:hover{border-color:var(--color-brand);color:var(--color-brand)}.header{border-bottom:1px solid var(--color-border);backdrop-filter:blur(8px);z-index:10;background:#ffffffeb;position:sticky;top:0}.header__inner{justify-content:space-between;align-items:center;gap:16px;height:72px;display:flex}.header__brand{letter-spacing:.02em;flex-shrink:0;align-items:center;gap:10px;font-size:18px;font-weight:700;text-decoration:none;display:inline-flex}.header__mark{background:var(--color-brand);color:#fff;border-radius:7px;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;display:inline-flex}.header__nav{align-items:center;gap:20px;display:flex}.header__nav a:not(.button){color:var(--color-muted);white-space:nowrap;font-size:14px;font-weight:500;text-decoration:none}.header__nav a:not(.button):hover{color:var(--color-brand)}.header__login{height:36px;padding:0 18px;font-size:14px}.language-switcher{appearance:none;border:1px solid var(--color-border);color:var(--color-fg);cursor:pointer;background:#fff;border-radius:8px;padding:6px 10px;font-family:inherit;font-size:13px}.hero{background:linear-gradient(180deg, var(--color-brand-tint) 0%, var(--color-bg) 65%);position:relative;overflow:hidden}.hero__lines{pointer-events:none;position:absolute;inset:0}.hero__line{background:var(--color-border);position:absolute}.hero__line--h{height:1px;left:0;right:0}.hero__line--v{width:1px;top:0;bottom:0}.hero__inner{text-align:center;padding:96px 24px 72px;position:relative}.hero__kicker{letter-spacing:.16em;color:var(--color-brand);margin:0 0 16px;font-size:12px;font-weight:700}.hero__title{white-space:pre-line;margin:0;font-size:clamp(32px,6vw,56px);font-weight:700;line-height:1.2}.hero__subtitle{max-width:640px;color:var(--color-muted);margin:24px auto 0;font-size:17px;line-height:1.7}.hero__cta{flex-direction:column;align-items:center;gap:12px;margin-top:36px;display:flex}.hero__cta-note{color:var(--color-muted);margin:0;font-size:13px}.section-title{text-align:center;margin:0 0 40px;font-size:clamp(24px,3.4vw,32px);font-weight:700}.features{padding:80px 0}.features__grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;display:grid}.feature-card{border:1px solid var(--color-border);text-align:center;background:#fff;border-radius:16px;padding:32px 28px}.feature-card__icon{background:var(--color-brand-tint);width:48px;height:48px;color:var(--color-brand);border-radius:12px;justify-content:center;align-items:center;margin-bottom:20px;display:inline-flex}.feature-card__title{margin:0 0 10px;font-size:17px;font-weight:700}.feature-card__description{color:var(--color-muted);margin:0;font-size:14px;line-height:1.7}.how-it-works{background:var(--color-bg-alt);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);padding:80px 0}.steps{counter-reset:step;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px;margin:0;padding:0;list-style:none;display:grid}.step{text-align:center}.step__number{background:var(--color-brand);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;margin-bottom:16px;font-weight:700;display:inline-flex}.step__title{margin:0 0 8px;font-size:16px;font-weight:700}.step__description{color:var(--color-muted);margin:0;font-size:14px;line-height:1.7}.footer{padding:48px 0}.footer__inner{text-align:center;flex-direction:column;align-items:center;gap:12px;display:flex}.footer__support{color:var(--color-muted);max-width:560px;margin:0;font-size:14px}.footer__links a{color:var(--color-brand);font-size:14px;font-weight:600;text-decoration:none}.footer__links a:hover{text-decoration:underline}.footer__copyright{color:var(--color-muted);margin:0;font-size:12px}@media (width<=640px){.header__nav{gap:12px}.header__nav a:not(.button){display:none}}