* {
    box-sizing: border-box;
}

:root {
    --bg-1: #07115c;
    --bg-2: #142da4;
    --bg-3: #eef4ff;
    --card: rgba(255, 255, 255, 0.94);
    --text: #172044;
    --muted: #59607a;
    --accent: #3159e8;
    --accent-2: #ff8a35;
    --danger: #d74040;
    --success: #1b8f61;
    --border: rgba(49, 89, 232, 0.16);
    --shadow: 0 18px 50px rgba(1, 10, 55, 0.22);
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, Meiryo, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 20% 10%, rgba(255, 255, 255, 0.22), transparent 32%),
        linear-gradient(160deg, var(--bg-1) 0%, var(--bg-2) 48%, #526ef0 100%);
    min-height: 100vh;
    line-height: 1.75;
}

.page {
    width: min(980px, 100%);
    margin: 0 auto;
    padding: 22px 16px 56px;
}

.hero {
    border-radius: 26px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: #101b65;
}

.hero__image {
    display: block;
    width: 100%;
    height: auto;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: 0 12px 38px rgba(0, 11, 68, 0.12);
    backdrop-filter: blur(8px);
}

.intro {
    margin: -28px auto 18px;
    position: relative;
    width: min(900px, calc(100% - 20px));
    padding: 26px 28px;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 0 8px;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(49, 89, 232, 0.1);
    color: var(--accent);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 0.06em;
}

h1, h2, h3 {
    margin: 0;
    line-height: 1.35;
}

h1 {
    font-size: clamp(24px, 4vw, 40px);
    letter-spacing: 0.02em;
}

h2 {
    font-size: clamp(20px, 3vw, 27px);
    margin-bottom: 14px;
}

h3 {
    font-size: 17px;
}

.lead,
.section-lead {
    margin: 12px 0 0;
    color: var(--muted);
}

.section-block {
    width: min(900px, calc(100% - 20px));
    margin: 18px auto 0;
    padding: 26px 28px;
}

.voice-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.voice-card {
    padding: 18px;
    border-radius: 18px;
    background: #fff;
    border: 1px solid rgba(49, 89, 232, 0.14);
}

.voice-card h3 {
    margin-bottom: 10px;
}

.voice-card audio {
    display: block;
    width: 100%;
}

.small-note {
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.notes ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.notes li + li {
    margin-top: 10px;
}

@media (max-width: 640px) {
    .page {
        padding: 12px 12px 40px;
    }

    .hero {
        border-radius: 18px;
    }

    .intro,
    .section-block {
        width: 100%;
        padding: 22px 18px;
        border-radius: 18px;
    }

    .intro {
        margin-top: -18px;
    }

    .voice-list {
        grid-template-columns: 1fr;
    }
}