:root {
    --sp-bg: #0b0f17;
    --sp-surface: rgba(255, 255, 255, 0.06);
    --sp-border: rgba(255, 255, 255, 0.12);
    --sp-text: #eaf2ff;
    --sp-muted: #a9b3c7;
    --sp-primary: #6ea8ff;
    --sp-primary2: #4d86ff;
    --sp-radius: 18px;
    --sp-glass: saturate(180%) blur(8px);
    --sp-shadow: 0 12px 34px rgba(0, 0, 0, 0.35);
}

.sp-header {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border-bottom: 1px solid var(--sp-border);
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: var(--sp-glass);
    -webkit-backdrop-filter: var(--sp-glass);
}

.sp-header__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--sp-text);
    text-decoration: none;
}

.brand__logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.brand__text {
    font-weight: 600;
    letter-spacing: .4px;
}

.sp-nav a {
    color: var(--sp-muted);
    text-decoration: none;
    padding: 8px 10px;
    border-radius: 10px;
}

.sp-nav a:hover {
    color: var(--sp-text);
    background: rgba(255, 255, 255, 0.07);
}

.sp-container {
    min-height: 100dvh;
    background: radial-gradient(1400px 900px at 70% -10%, #1a2240 0%, var(--sp-bg) 55%) fixed;
    padding: clamp(16px, 4vw, 40px);
    display: grid;
    place-items: center;
}

.sp-card {
    width: min(980px, 96vw);
    background: var(--sp-surface);
    border: 1px solid var(--sp-border);
    border-radius: var(--sp-radius);
    box-shadow: var(--sp-shadow);
    padding: clamp(18px, 3.6vw, 28px);
    backdrop-filter: var(--sp-glass);
    -webkit-backdrop-filter: var(--sp-glass);
}

h1 {
    margin: 0 0 8px;
    font-size: clamp(22px, 4.4vw, 30px);
}

h2 {
    margin: 12px 0 6px;
    font-size: clamp(18px, 3.6vw, 22px);
    color: var(--sp-text);
}

.muted {
    color: var(--sp-muted);
}

.pref {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px;
    margin: 12px 0;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.theme-indicator {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: var(--sp-text);
}

.sp-section {
    margin: 16px 0;
}

.sp-list {
    list-style: none;
    padding-left: 0;
    margin: 8px 0 0;
}

.sp-list li {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 10px;
    margin: 6px 0;
    border-radius: 10px;
}

.sp-list a {
    color: var(--sp-primary);
    text-decoration: none;
}

.sp-list a:hover {
    text-decoration: underline;
}

.sp-actions {
    margin-top: 16px;
    display: grid;
    place-items: start;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.24);
    color: var(--sp-text);
    cursor: pointer;
}

.sp-footer {
    text-align: center;
    color: var(--sp-muted);
    padding: 16px;
}