*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', 'Noto Sans JP', -apple-system, sans-serif;
    background: #fff;
    color: #444;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

a { color: #888; }
a:hover { color: #333; }

main {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero */
.hero {
    padding: 100px 0 48px;
}

.badge {
    font-size: 11px;
    font-weight: 500;
    color: #aaa;
    letter-spacing: 0.04em;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 600;
    color: #111;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 8px;
}

.lead {
    font-size: 18px;
    color: #666;
    margin-bottom: 8px;
}

.sub {
    font-size: 14px;
    color: #aaa;
}

/* Video */
.video {
    padding-bottom: 64px;
}

.video video {
    width: 100%;
    border-radius: 8px;
    display: block;
}

/* Features */
.features {
    padding-bottom: 56px;
    border-bottom: 1px solid #eee;
}

.features ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.features li {
    font-size: 14px;
    color: #888;
    padding-left: 16px;
    position: relative;
}

.features li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: #ccc;
}

.features li strong {
    color: #333;
    font-weight: 500;
}

/* Tech */
.tech {
    padding: 56px 0;
    border-bottom: 1px solid #eee;
}

.tech h2 {
    font-size: 14px;
    font-weight: 500;
    color: #aaa;
    margin-bottom: 12px;
    letter-spacing: 0.03em;
}

.tech p {
    font-size: 13px;
    color: #888;
    margin-bottom: 12px;
}

.tech p:last-child {
    margin-bottom: 0;
}

/* Link */
.link {
    padding: 48px 0;
}

.link a {
    font-size: 13px;
    color: #aaa;
    text-decoration: none;
    transition: color 0.15s;
}

.link a:hover {
    color: #555;
}

/* Footer */
footer {
    max-width: 720px;
    margin: 0 auto;
    padding: 32px 24px;
    border-top: 1px solid #eee;
}

footer p {
    font-size: 11px;
    color: #ccc;
}

footer a {
    color: #bbb;
    text-decoration: none;
}

@media (max-width: 600px) {
    .hero { padding: 64px 0 32px; }
    .hero h1 { font-size: 36px; }
}