@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+KR:wght@400;500;600;700&display=swap');

:root {
    --bg: #edf3fb;
    --surface: #ffffff;
    --ink: #10223d;
    --ink-soft: #456082;
    --line: rgba(20, 55, 100, 0.14);
    --primary: #1e4ea8;
    --primary-2: #0f7d9c;
    --shadow: 0 18px 36px rgba(16, 44, 88, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'IBM Plex Sans KR', 'Segoe UI', sans-serif;
    color: var(--ink);
    background:
        radial-gradient(900px 520px at 16% -10%, rgba(30, 78, 168, 0.10) 0%, rgba(30, 78, 168, 0) 60%),
        radial-gradient(900px 520px at 84% -16%, rgba(15, 125, 156, 0.10) 0%, rgba(15, 125, 156, 0) 60%),
        var(--bg);
    padding: 24px 12px;
}

.page {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
}

.hero,
.section {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 22px;
    box-shadow: var(--shadow);
}

.hero-logo {
    width: 250px;
    max-width: 100%;
    height: auto;
}

h1 {
    margin: 12px 0 8px;
    font-size: clamp(1.5rem, 2.3vw, 2rem);
}

h2 {
    margin: 0 0 14px;
    font-size: 1.25rem;
}

h3 {
    margin: 0 0 10px;
}

p {
    margin: 0;
    line-height: 1.6;
    color: var(--ink-soft);
}

ul {
    margin: 10px 0 0;
    padding-left: 18px;
    display: grid;
    gap: 6px;
    color: var(--ink-soft);
}

.hero-actions {
    margin-top: 14px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
}

.btn-primary {
    color: #f5f9ff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
}

.btn-outline {
    color: var(--primary);
    border: 1px solid rgba(30, 78, 168, 0.28);
    background: #f8fbff;
}

.card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px;
    background: #fbfdff;
}

.sample-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.sample-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px;
    background: #fbfdff;
}

.sample-time {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.88rem;
}

.sample-title {
    margin-top: 6px;
    color: var(--ink);
    font-weight: 700;
}

.sample-desc {
    margin-top: 4px;
}

.faq {
    display: grid;
    gap: 8px;
}

details {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 12px;
    background: #fbfdff;
}

summary {
    cursor: pointer;
    font-weight: 700;
    color: var(--ink);
}

.note {
    margin-top: 10px;
    font-size: 0.86rem;
}

.ad-slot-demo {
    margin-top: 10px;
    border: 1px dashed rgba(30, 78, 168, 0.35);
    border-radius: 10px;
    min-height: 76px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4e6690;
    background: #f4f8ff;
    font-weight: 700;
}

@media (max-width: 760px) {
    .sample-grid {
        grid-template-columns: 1fr;
    }
}