:root {
    color-scheme: light;
    --bg: #f7f7f8;
    --bg-accent: #ececf1;
    --text-primary: #202123;
    --text-secondary: #4b5563;
    --accent: #10a37f;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Noto Sans JP', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
}

.hero {
    background: linear-gradient(135deg, #40414f, #343541 55%, #202123);
    color: #f7f7f8;
    padding: 72px 16px 56px;
}

.hero__inner {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: center;
    text-align: center;
}

.avatar {
    width: 128px;
    height: 128px;
    border-radius: 24px;
    background: var(--bg-accent);
    padding: 8px;
    box-shadow: 0 16px 28px rgba(16, 14, 23, 0.4);
}

.hero__name {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin: 0;
}

.tagline {
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
    color: rgba(255, 255, 255, 0.85);
}

main {
    max-width: 960px;
    margin: -48px auto 96px;
    padding: 0 16px;
}

.card {
    background: #ffffff;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 24px 48px rgba(15, 15, 20, 0.08);
    display: grid;
    gap: 32px;
}

section {
    display: grid;
    gap: 12px;
}

h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

p {
    margin: 0;
    color: var(--text-secondary);
}

ul {
    margin: 0;
    padding-left: 20px;
    color: var(--text-secondary);
}

li+li {
    margin-top: 6px;
}

.highlight {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(16, 163, 127, 0.1);
    color: var(--accent);
    font-weight: 500;
    font-size: 0.95rem;
}

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

    .hero {
        padding: 56px 16px 48px;
    }

    .hero__inner {
        gap: 20px;
    }
}