* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: #111827;
    background: #f8fafc;
    line-height: 1.7;
}

.page {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
    padding: 56px 0;
}

.hero,
.card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
}

.hero {
    padding: 40px;
    margin-bottom: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
}

h1 {
    margin: 0;
    font-size: 34px;
    line-height: 1.2;
}

.subtitle {
    margin: 6px 0 0;
    color: #6b7280;
}

.lead {
    margin: 0;
    color: #374151;
    font-size: 17px;
}

.nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 16px;
    border-radius: 10px;
    color: #fff;
    background: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

.button.secondary {
    color: #1d4ed8;
    background: #dbeafe;
}

.card {
    padding: 32px 40px;
    margin-bottom: 20px;
}

h2 {
    margin: 0 0 12px;
    font-size: 24px;
}

h3 {
    margin: 24px 0 8px;
    font-size: 18px;
}

p,
li {
    color: #374151;
}

ul {
    padding-left: 20px;
}

.meta {
    color: #6b7280;
    font-size: 14px;
}

.footer {
    color: #6b7280;
    font-size: 13px;
    text-align: center;
    margin-top: 32px;
}

@media (max-width: 640px) {
    .page {
        padding: 24px 0;
    }

    .hero,
    .card {
        padding: 24px;
        border-radius: 12px;
    }

    .brand {
        align-items: flex-start;
    }

    h1 {
        font-size: 28px;
    }
}