:root {
    color-scheme: light;
    --page: #eaf4ff;
    --surface: rgba(255, 255, 255, 0.9);
    --ink: #10204f;
    --muted: #5e74a7;
    --blue: #4267f4;
    --blue-deep: #1f4ee9;
    --line: rgba(66, 103, 244, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    padding: 42px 16px;
    color: var(--ink);
    font-family: Pretendard, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        linear-gradient(160deg, rgba(255, 255, 255, 0.78) 0%, rgba(255, 255, 255, 0) 38%),
        linear-gradient(135deg, #f6fbff 0%, #dceaff 48%, #f9fcff 100%);
}

a {
    color: var(--blue);
    font-weight: 800;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.info-shell {
    width: min(100%, 720px);
    margin: 0 auto;
}

.info-card {
    padding: clamp(26px, 6vw, 46px);
    border: 1px solid rgba(255, 255, 255, 0.82);
    border-radius: 34px;
    background: var(--surface);
    box-shadow:
        0 30px 70px rgba(48, 91, 165, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(18px);
}

.eyebrow {
    display: inline-flex;
    margin: 0 0 18px;
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--blue-deep);
    background: rgba(66, 103, 244, 0.1);
    font-size: 12px;
    font-weight: 900;
}

h1 {
    margin: 0 0 14px;
    font-size: clamp(32px, 8vw, 46px);
    line-height: 1.08;
    letter-spacing: 0;
}

h2 {
    margin: 30px 0 10px;
    font-size: 20px;
}

p,
li {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
    font-weight: 700;
}

p {
    margin: 0 0 14px;
}

ul {
    margin: 0 0 18px;
    padding-left: 20px;
}

.lead {
    color: #3f5488;
    font-size: 16px;
}

.meta {
    margin-top: 8px;
    color: #7b8db9;
    font-size: 13px;
}

.notice-box {
    margin: 20px 0;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
}

.guide-list {
    display: grid;
    gap: 12px;
    margin: 22px 0;
}

.guide-card {
    position: relative;
    display: block;
    overflow: hidden;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 20px;
    color: var(--ink);
    background: #fff;
    box-shadow: 0 12px 24px rgba(80, 116, 178, 0.1);
    transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.guide-card::after {
    content: ">";
    position: absolute;
    top: 18px;
    right: 18px;
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    color: #fff;
    font-size: 18px;
    font-weight: 900;
    background: var(--blue);
    box-shadow: 0 10px 18px rgba(66, 103, 244, 0.22);
}

.guide-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: block;
    margin-bottom: 14px;
    border-radius: 16px;
    object-fit: cover;
    background: #eef7ff;
    box-shadow: inset 0 0 0 1px rgba(66, 103, 244, 0.1);
}

.guide-card-body {
    display: block;
    padding: 2px 4px 2px;
}

.guide-card:hover {
    text-decoration: none;
    border-color: rgba(66, 103, 244, 0.32);
    box-shadow: 0 16px 30px rgba(80, 116, 178, 0.16);
    transform: translateY(-1px);
}

.guide-card strong {
    display: block;
    padding-right: 42px;
    margin-bottom: 6px;
    color: var(--ink);
    font-size: 16px;
}

.guide-card span {
    display: block;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
}

.guide-cta {
    display: inline-flex;
    align-items: center;
    margin-top: 12px;
    padding: 9px 12px;
    border-radius: 999px;
    color: #fff;
    background: var(--blue);
    font-size: 13px;
    font-weight: 900;
    box-shadow: 0 10px 18px rgba(66, 103, 244, 0.18);
}

.top-nav,
.bottom-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
}

.top-nav {
    margin-bottom: 18px;
}

.bottom-nav {
    margin-top: 32px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}

@media (max-width: 520px) {
    body {
        padding: 24px 12px;
    }

    .info-card {
        border-radius: 28px;
    }
}