:root {
    --about-bg: #eef3f8;
    --about-surface: rgba(255, 255, 255, 0.92);
    --about-surface-strong: #ffffff;
    --about-text: #1f2a37;
    --about-muted: #5f6f82;
    --about-line: rgba(15, 23, 42, 0.08);
    --about-accent: #007bff;
    --about-accent-soft: rgba(0, 123, 255, 0.12);
    --about-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(0, 123, 255, 0.14), transparent 36%),
        linear-gradient(180deg, #f8fbff 0%, var(--about-bg) 100%);
    color: var(--about-text);
}

a {
    color: inherit;
}

.about-shell {
    width: min(980px, calc(100% - 32px));
    margin: 24px auto 56px;
}

.about-hero {
    position: relative;
    overflow: hidden;
    padding: 28px;
    border-radius: 28px;
    background: linear-gradient(145deg, rgba(255,255,255,0.98), rgba(245,250,255,0.94));
    border: 1px solid rgba(255,255,255,0.7);
    box-shadow: var(--about-shadow);
}

.about-hero::after {
    content: "";
    position: absolute;
    inset: auto -80px -120px auto;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 123, 255, 0.24), transparent 66%);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid var(--about-line);
    background: rgba(255,255,255,0.9);
    color: var(--about-accent);
    text-decoration: none;
    font-weight: 700;
}

.about-kicker {
    margin: 28px 0 10px;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--about-accent);
}

.about-hero h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.08;
}

.about-lead {
    max-width: 720px;
    margin: 18px 0 0;
    color: var(--about-muted);
    font-size: 1.02rem;
    line-height: 1.9;
}

.about-grid {
    display: grid;
    gap: 18px;
    margin-top: 22px;
}

.about-card {
    padding: 28px;
    border-radius: 24px;
    background: var(--about-surface);
    border: 1px solid rgba(255,255,255,0.75);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(10px);
}

.about-card h2 {
    margin: 0 0 14px;
    font-size: 1.35rem;
}

.about-card p,
.about-card li {
    margin: 0 0 14px;
    color: var(--about-muted);
    line-height: 1.95;
    font-size: 1rem;
}

.about-card ul {
    margin: 0;
    padding-left: 1.2rem;
}

.legal-divider {
    width: 100%;
}

.legal-section {
    overflow-x: auto;
}

.legal-table th,
.legal-table td {
    vertical-align: top;
    line-height: 1.7;
    color: var(--about-text);
}

.legal-table small {
    color: var(--about-muted);
}

.profile-box {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 20px;
    align-items: start;
    margin-top: 14px;
    padding: 20px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(0, 123, 255, 0.08), rgba(255,255,255,0.9));
    border: 1px dashed rgba(0, 123, 255, 0.28);
}

.profile-placeholder {
    aspect-ratio: 1;
    border-radius: 18px;
    border: 1px dashed rgba(0, 123, 255, 0.4);
    background:
        linear-gradient(135deg, rgba(0,123,255,0.18), rgba(255,255,255,0.5)),
        repeating-linear-gradient(45deg, rgba(0,123,255,0.08) 0, rgba(0,123,255,0.08) 12px, transparent 12px, transparent 24px);
    display: grid;
    place-items: center;
    color: var(--about-accent);
    font-weight: 700;
    text-align: center;
    padding: 16px;
}

.profile-meta strong {
    display: block;
    margin-bottom: 8px;
    font-size: 1.1rem;
    color: var(--about-text);
}

.about-footer {
    margin-top: 16px;
    text-align: center;
    color: var(--about-muted);
    font-size: 0.92rem;
}

@media (max-width: 720px) {
    .about-shell {
        width: min(100%, calc(100% - 18px));
        margin: 12px auto 36px;
    }

    .about-hero,
    .about-card {
        padding: 20px;
        border-radius: 22px;
    }

    .profile-box {
        grid-template-columns: 1fr;
    }

    .about-card p,
    .about-card li,
    .about-lead {
        line-height: 1.82;
    }

    .legal-table th,
    .legal-table td {
        display: block;
        width: 100% !important;
    }
}