:root {
    --grad-1: #667eea;
    --grad-2: #764ba2;
    --card: rgba(255, 255, 255, 0.10);
    --card-border: rgba(255, 255, 255, 0.18);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
    color: #fff;
    background: linear-gradient(160deg, var(--grad-1) 0%, var(--grad-2) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* Language switcher */
.lang-switch {
    display: flex; justify-content: flex-end; align-items: center;
    gap: 6px; padding-top: 20px; font-size: 0.85rem;
}
.lang-switch a {
    color: #fff; text-decoration: none; opacity: 0.7;
    padding: 5px 12px; border-radius: 999px;
    border: 1px solid transparent; transition: opacity 0.15s, background 0.15s;
}
.lang-switch a:hover { opacity: 1; background: rgba(255,255,255,0.10); }
.lang-switch a[aria-current="true"] {
    opacity: 1; font-weight: 700;
    background: rgba(255,255,255,0.16);
    border-color: var(--card-border);
}

/* Hero */
header.hero { text-align: center; padding: 52px 0 48px; }
.logo {
    width: 104px; height: 104px; margin: 0 auto 24px;
    display: block;
    border-radius: 24px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.28);
    object-fit: cover;
}
.hero h1 { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
.hero .tagline { font-size: 1.15rem; opacity: 0.92; margin-bottom: 8px; }
.hero .sub { font-size: 0.98rem; opacity: 0.72; max-width: 480px; margin: 0 auto 36px; }

/* Store buttons */
.stores { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.store-btn {
    display: inline-flex; align-items: center; gap: 12px;
    min-width: 210px;
    padding: 12px 22px;
    background: #000; color: #fff;
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 14px;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s;
    box-shadow: 0 6px 20px rgba(0,0,0,0.28);
}
.store-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,0,0,0.36); }
.store-btn:active { transform: translateY(0); }
.store-btn svg { flex-shrink: 0; }
.store-btn .txt { text-align: left; line-height: 1.15; }
.store-btn .txt small { display: block; font-size: 0.66rem; opacity: 0.8; font-weight: 500; letter-spacing: 0.02em; }
.store-btn .txt span { display: block; font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em; }
.store-btn.recommended { outline: 2px solid #fff; outline-offset: 2px; }
.reco-note { font-size: 0.82rem; opacity: 0.8; margin-top: 18px; min-height: 1.2em; }

/* Sections */
section { padding: 28px 0; }
.section-title { text-align: center; font-size: 1.5rem; font-weight: 700; margin-bottom: 28px; letter-spacing: -0.01em; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 26px 22px;
    text-align: center;
    backdrop-filter: blur(6px);
}
.feature .ico { font-size: 2rem; margin-bottom: 12px; }
.feature h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; }
.feature p { font-size: 0.92rem; opacity: 0.82; }

/* Steps */
.steps { max-width: 560px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.step {
    display: flex; align-items: flex-start; gap: 16px;
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 18px 20px;
}
.step .num {
    flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%;
    background: #fff; color: var(--grad-2);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 0.95rem;
}
.step .st-body h4 { font-size: 1rem; font-weight: 700; margin-bottom: 2px; }
.step .st-body p { font-size: 0.9rem; opacity: 0.8; }

/* CTA */
.cta { text-align: center; padding: 20px 0 8px; }
.cta p { opacity: 0.85; font-size: 0.95rem; }

/* Footer */
footer { text-align: center; padding: 40px 0 56px; opacity: 0.72; font-size: 0.85rem; }
footer a { color: #fff; text-decoration: underline; opacity: 0.9; }
footer .fnav { margin-bottom: 10px; }
footer .fnav a { margin: 0 10px; }
footer .meta { margin-bottom: 8px; opacity: 0.8; }

@media (max-width: 720px) {
    header.hero { padding: 36px 0 40px; }
    .hero h1 { font-size: 2rem; }
    .features { grid-template-columns: 1fr; }
    .store-btn { flex: 1 1 100%; justify-content: center; min-width: 0; }
}