:root{--bg: #ffffff;--ink: #1a1a2e;--ink-soft: #55556b;--accent: #4a6cf7;--accent-dark: #3451d1;--card-radius: 24px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:auto}body{background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans JP,Noto Sans KR,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden;overscroll-behavior-y:none}.hero{position:relative;height:100vh;height:100svh;overflow:hidden;background:radial-gradient(1200px 600px at 50% 38%,#f4f6ff,#fff0 60%),var(--bg)}.hero-card{position:absolute;left:50%;top:50%;transform:translate(-50%,-52%);width:min(560px,calc(100vw - 48px));padding:56px 48px 48px;background:#fff;border-radius:var(--card-radius);text-align:center;box-shadow:0 1px 2px #1a1a2e0a,0 12px 24px -8px #1a1a2e14,0 32px 64px -16px #4a6cf729;animation:hero-float 6s ease-in-out infinite;z-index:2}@keyframes hero-float{0%,to{transform:translate(-50%,-52%)}50%{transform:translate(-50%,calc(-52% - 10px))}}.hero-name{font-size:clamp(2rem,5vw,3rem);font-weight:800;letter-spacing:-.02em;background:linear-gradient(120deg,var(--ink) 40%,var(--accent) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-slogan{margin-top:8px;font-size:clamp(1rem,2.2vw,1.25rem);font-weight:600;color:var(--accent)}.hero-desc{margin:20px auto 0;max-width:42ch;font-size:.95rem;line-height:1.7;color:var(--ink-soft)}.hero-downloads{margin-top:32px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.dl-btn{display:inline-block;padding:12px 26px;border-radius:999px;font-size:.92rem;font-weight:600;text-decoration:none;color:var(--accent);border:1.5px solid rgba(74,108,247,.35);transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.dl-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px -6px #4a6cf759}.dl-primary{background:var(--accent);border-color:var(--accent);color:#fff}.dl-primary:hover{background:var(--accent-dark)}.hero-images{position:absolute;top:0;right:0;bottom:0;left:0;z-index:1}.hero-img{position:absolute;display:block;border-radius:18%;box-shadow:0 6px 18px -4px #1a1a2e2e;transition:transform .25s ease,box-shadow .25s ease;will-change:transform}.hero-img:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 14px 28px -6px #1a1a2e47}.hero-img img{display:block;width:100%;height:100%;border-radius:inherit}.scroll-hint{position:absolute;left:50%;bottom:28px;transform:translate(-50%);z-index:2}.scroll-hint-arrow{display:block;width:14px;height:14px;border-right:2px solid rgba(26,26,46,.35);border-bottom:2px solid rgba(26,26,46,.35);transform:rotate(45deg);animation:hint-bounce 1.8s ease-in-out infinite}@keyframes hint-bounce{0%,to{transform:rotate(45deg) translate(0);opacity:.9}50%{transform:rotate(45deg) translate(5px,5px);opacity:.4}}.details{min-height:100vh;background:var(--bg)}.details-section{max-width:960px;margin:0 auto;padding:96px 32px 0}.details-section h2{font-size:1.75rem;font-weight:700;letter-spacing:-.01em;margin-bottom:32px;text-align:center}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}.feature-card{padding:28px 24px;border:1px solid rgba(26,26,46,.08);border-radius:16px;background:#fbfbfe}.feature-card h3{font-size:1.05rem;margin-bottom:10px;color:var(--accent-dark)}.feature-card p{font-size:.9rem;line-height:1.7;color:var(--ink-soft)}.gallery-row{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}.gallery-row img{border-radius:16px;box-shadow:0 8px 24px -8px #1a1a2e33}.faq details{border:1px solid rgba(26,26,46,.1);border-radius:12px;padding:16px 20px;margin-bottom:12px;background:#fff}.faq summary{font-weight:600;cursor:pointer;list-style-position:inside}.faq details p{margin-top:12px;font-size:.9rem;line-height:1.7;color:var(--ink-soft)}.footer{margin-top:96px;padding:40px 32px 56px;border-top:1px solid rgba(26,26,46,.08);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;max-width:960px;margin-left:auto;margin-right:auto;font-size:.85rem;color:var(--ink-soft)}.footer nav{display:flex;gap:20px}.footer a{color:var(--accent);text-decoration:none}.footer a:hover{text-decoration:underline}@media(max-width:560px){.hero-card{padding:40px 24px 36px}.details-section{padding:64px 20px 0}}@media(prefers-reduced-motion:reduce){.hero-card,.scroll-hint-arrow{animation:none}.hero-img{transition:none}}