:root {
    --bg: #0b0c10;
    --bg-elevated: #161820;
    --bg-elevated-soft: #1f2230;
    --accent: #2998f2;
    --accent-soft: #55a9ed;
    --danger: #f74b4b;
    --text: #e0e0e0;
    --muted: #a0a0a0;
    --border-subtle: #252836;
    --radius-lg: 12px;
    --radius-md: 8px;
    --shadow-soft: 0 14px 28px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    background: var(--bg);
    overscroll-behavior: none;
    height: 100%;
}

body {
    font-family:
        "Segoe UI",
        -apple-system,
        BlinkMacSystemFont,
        "Helvetica Neue",
        Arial,
        sans-serif;

    background: radial-gradient(circle at top, #1b2838 0, #050608 55%);
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

.page-shell {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.page-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    width: 48px;
    height: 48px;
    background-image: url("/assets/img/logo.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.brand-text-main {
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: 0.03em;
}

.brand-text-sub {
    color: var(--muted);
    font-size: 0.82rem;
}

.link-card {
    padding: 2rem;
    text-align: center;
}

.hero-logo {
    max-width: 250px;
    margin-bottom: 1.2rem;
}

h1 {
    font-size: 1.9rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--muted);
    margin-bottom: 1.5rem;
}

.link-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.link-item {
    background: linear-gradient(135deg, #1b2838, #111722);
    border: 1px solid #233a57;
    color: white;
    padding: 0.9rem 1.4rem;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    text-decoration: none;
    transition: background-color 0.2s, transform 0.12s, box-shadow 0.2s;
}

.link-item:hover {
    background-color: #233a57;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.5);
}

.footer {
    margin-top: 2.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--muted);
}

@media (max-width: 600px) {
    .hero-logo { max-width: 200px; }
    h1 { font-size: 1.6rem; }
    .link-item { font-size: 1rem; }
}