:root {
    --portal-bg: #060d18;
    --portal-surface: rgba(255, 255, 255, 0.06);
    --portal-border: rgba(255, 255, 255, 0.1);
    --portal-text: #f1f5f9;
    --portal-muted: #94a3b8;
    --portal-accent: #38bdf8;
    --portal-by: #38bdf8;
    --portal-brand: #fbbf24;
    --portal-admin: #818cf8;
    --portal-radius: 20px;
    --portal-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

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

html,
body {
    min-height: 100%;
    margin: 0;
}

body.portal-page {
    position: relative;
    min-height: 100vh;
    font-family: "DM Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-weight: 400;
    color: var(--portal-text);
    background: var(--portal-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

.portal-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.portal-bg__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 20%, transparent 75%);
}

.portal-bg__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.55;
    animation: portal-float 18s ease-in-out infinite;
}

.portal-bg__orb--1 {
    top: -120px;
    left: -80px;
    width: 420px;
    height: 420px;
    background: #0ea5e9;
}

.portal-bg__orb--2 {
    top: 20%;
    right: -100px;
    width: 360px;
    height: 360px;
    background: #6366f1;
    animation-delay: -6s;
}

.portal-bg__orb--3 {
    bottom: -80px;
    left: 35%;
    width: 300px;
    height: 300px;
    background: #f59e0b;
    animation-delay: -12s;
}

@keyframes portal-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -16px) scale(1.05); }
}

#mainbody {
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 72px);
}

.portal {
    max-width: 1120px;
    margin: 0 auto;
    padding: 56px 24px 40px;
}

.portal-header {
    text-align: center;
    margin-bottom: 48px;
}

.portal-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
    padding: 8px 14px 8px 8px;
    border: 1px solid var(--portal-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(12px);
}

.portal-brand__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #0f172a;
    background: linear-gradient(135deg, #38bdf8, #818cf8);
}

.portal-brand__name {
    font-size: 13px;
    font-weight: 600;
    color: var(--portal-muted);
    letter-spacing: 0.5px;
}

.portal-eyebrow {
    display: inline-block;
    margin: 0 0 18px;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--portal-accent);
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 999px;
}

.portal-title {
    margin: 0 0 14px;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.5px;
    background: linear-gradient(180deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.portal-subtitle {
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
    color: var(--portal-muted);
}

.portal-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.portal-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-height: 260px;
    padding: 28px 24px 22px;
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    background: var(--portal-surface);
    backdrop-filter: blur(16px);
    box-shadow: var(--portal-shadow);
    overflow: hidden;
    transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease, background 0.28s ease;
}

.portal-card::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.28s ease;
    pointer-events: none;
}

.portal-card--byc::before {
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.18), transparent 55%);
}

.portal-card--brand::before {
    background: radial-gradient(circle at top right, rgba(251, 191, 36, 0.18), transparent 55%);
}

.portal-card--admin::before {
    background: radial-gradient(circle at top right, rgba(129, 140, 248, 0.18), transparent 55%);
}

.portal-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.09);
}

.portal-card:hover::before {
    opacity: 1;
}

.portal-card__badge {
    position: absolute;
    top: 18px;
    right: 18px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.35);
}

.portal-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin-bottom: 22px;
    border-radius: 16px;
    position: relative;
    z-index: 1;
}

.portal-card__icon::before {
    content: "";
    display: block;
    width: 26px;
    height: 26px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

.portal-card__icon--wrench {
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.portal-card__icon--wrench::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2338bdf8' stroke-width='1.8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M11.42 15.17l-4.24 4.24a2.12 2.12 0 01-3-3l4.24-4.24M14.83 11.76l2.12-2.12a4.24 4.24 0 10-6-6l-2.12 2.12M16.95 7.05l-9.9 9.9'/%3E%3C/svg%3E");
}

.portal-card__icon--tag {
    background: rgba(251, 191, 36, 0.15);
    border: 1px solid rgba(251, 191, 36, 0.3);
}

.portal-card__icon--tag::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23fbbf24' stroke-width='1.8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M7 7h.01M3 11l8.59 8.59a2 2 0 002.83 0l6.17-6.17a2 2 0 000-2.83L12.41 2.41a2 2 0 00-2.83 0L3 9v2z'/%3E%3C/svg%3E");
}

.portal-card__icon--cog {
    background: rgba(129, 140, 248, 0.15);
    border: 1px solid rgba(129, 140, 248, 0.3);
}

.portal-card__icon--cog::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23818cf8' stroke-width='1.8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z'/%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M15 12a3 3 0 11-6 0 3 3 0 016 0z'/%3E%3C/svg%3E");
}

.portal-card__title {
    position: relative;
    z-index: 1;
    margin-bottom: 10px;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.portal-card__desc {
    position: relative;
    z-index: 1;
    flex: 1;
    margin-bottom: 22px;
    font-size: 14px;
    line-height: 1.75;
    color: var(--portal-muted);
}

.portal-card__action {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: gap 0.2s ease, color 0.2s ease;
}

.portal-card:hover .portal-card__action {
    gap: 12px;
}

.portal-card--byc:hover .portal-card__action {
    color: var(--portal-by);
}

.portal-card--brand:hover .portal-card__action {
    color: var(--portal-brand);
}

.portal-card--admin:hover .portal-card__action {
    color: var(--portal-admin);
}

.portal-features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.portal-feature {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 18px 20px;
    border: 1px solid var(--portal-border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
}

.portal-feature strong {
    font-size: 14px;
    font-weight: 600;
    color: #e2e8f0;
}

.portal-feature span {
    font-size: 13px;
    color: var(--portal-muted);
    line-height: 1.5;
}

.footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--portal-border);
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(8px);
}

.footer__inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 20px 24px;
    text-align: center;
}

.footer p {
    margin: 0;
    font-size: 13px;
    color: rgba(148, 163, 184, 0.85);
}

.footer a {
    margin-left: 8px;
    color: var(--portal-muted);
    transition: color 0.2s ease;
}

.footer a:hover {
    color: var(--portal-accent);
}

@media (max-width: 960px) {
    .portal-grid,
    .portal-features {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

    .portal-features {
        margin-top: 0;
    }

    .portal {
        padding-top: 40px;
    }
}

@media (max-width: 767px) {
    .portal {
        padding: 32px 16px 28px;
    }

    .portal-header {
        margin-bottom: 36px;
    }

    .portal-brand {
        margin-bottom: 22px;
    }

    .portal-card {
        min-height: 220px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .portal-bg__orb {
        animation: none;
    }

    .portal-card,
    .portal-card__action,
    .footer a {
        transition: none;
    }
}