:root {
    --brand-blue: #21409a;
    --brand-blue-dark: #292663;
    --brand-yellow: #ffd400;
    --brand-white: #ffffff;
    --surface: #ffffff;
    --surface-muted: #f4f6fb;
    --surface-blue: #eef2fa;
    --text-primary: #1a1f36;
    --text-muted: #5c6378;
    --border: #dde3ef;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 12px 40px rgba(33, 64, 154, 0.12);
    --header-h: 72px;
    --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --transition: 0.2s ease;

    --mg-ink: var(--text-primary);
    --mg-water: #3d5fad;
    --mg-green: #21409a;
    --mg-blue: var(--brand-blue);
    --mg-orange: #f0961e;
    --mg-purple: #5b7fd6;
    --mg-red: #dc2626;
    --mg-surface: var(--surface);
    --mg-muted: var(--text-muted);
    --mg-border: var(--border);
    --mg-shadow: var(--shadow);
}

* { box-sizing: border-box; }

body {
    min-width: 320px;
    margin: 0;
    overflow: hidden;
    background: linear-gradient(145deg, var(--brand-blue-dark) 0%, #1a3578 42%, var(--brand-blue) 100%);
    color: var(--text-primary);
    font-family: var(--font);
}

button, a { font: inherit; }

/* ========== Topbar / navbar ========== */
.mg-topbar {
    position: fixed;
    z-index: 30;
    top: 0;
    right: 0;
    left: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 var(--border), 0 4px 24px rgba(33, 64, 154, 0.06);
}

.mg-topbar__inner {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    max-width: 1320px;
    min-height: var(--header-h);
    margin: 0 auto;
    padding: 0 1.5rem;
    gap: 1rem;
}

.mg-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 0.5rem;
    text-decoration: none;
}

.mg-brand-logo {
    display: block;
    width: auto;
    height: 36px;
    max-width: min(200px, 42vw);
    object-fit: contain;
}

.mg-nav-toggle {
    display: none;
    margin-left: auto;
    width: 42px;
    height: 42px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.mg-nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--brand-blue);
    transition: transform var(--transition), opacity var(--transition);
}

.mg-topbar.is-nav-open .mg-nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mg-topbar.is-nav-open .mg-nav-toggle span:nth-child(2) {
    opacity: 0;
}
.mg-topbar.is-nav-open .mg-nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mg-nav-panel {
    display: flex;
    flex: 1 1 auto;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    min-width: 0;
}

.mg-nav {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 0.1rem;
}

.mg-nav a {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
    line-height: 1.2;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition), background var(--transition);
}

.mg-nav a:hover,
.mg-nav a:focus-visible {
    color: var(--brand-blue);
    background: var(--surface-blue);
    outline: none;
}

.mg-nav a[aria-current="page"] {
    color: var(--brand-blue);
    font-weight: 600;
    background: var(--surface-blue);
}

.mg-topbar-actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: 0.75rem;
}

.mg-btn-brand {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.25rem;
    border-radius: 999px;
    background: var(--brand-yellow);
    color: var(--brand-blue-dark);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.mg-btn-brand:hover,
.mg-btn-brand:focus-visible {
    background: #f5c800;
    color: var(--brand-blue-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 212, 0, 0.45);
    outline: none;
}

.mg-app,
.mg-scene-shell {
    width: 100vw;
    height: 100vh;
}

.mg-scene-shell {
    position: relative;
    overflow: hidden;
    background: linear-gradient(145deg, var(--brand-blue-dark) 0%, #1a3578 42%, var(--brand-blue) 100%);
}

/* ========== Sky (hero mesh) ========== */
.mg-sky {
    position: absolute;
    z-index: 0;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.mg-sky-mesh {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 15% 20%, rgba(255, 212, 0, 0.16) 0%, transparent 42%),
        radial-gradient(circle at 85% 12%, rgba(255, 255, 255, 0.08) 0%, transparent 35%),
        linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
    background-size: auto, auto, 48px 48px, 48px 48px;
    animation: mg-mesh-drift 28s linear infinite;
}

.mg-sky-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
}

.mg-sky-orb--1 {
    top: -80px;
    right: 8%;
    width: 300px;
    height: 300px;
    background: var(--brand-yellow);
    opacity: 0.2;
    animation: mg-orb-pulse 7s ease-in-out infinite;
}

.mg-sky-orb--2 {
    bottom: 8%;
    left: -50px;
    width: 240px;
    height: 240px;
    background: #5b7fd6;
    opacity: 0.35;
    animation: mg-orb-pulse-2 9s ease-in-out infinite;
}

@keyframes mg-mesh-drift {
    from { background-position: 0 0, 0 0, 0 0, 0 0; }
    to { background-position: 0 0, 0 0, 48px 48px, 48px 48px; }
}

@keyframes mg-orb-pulse {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50% { transform: scale(1.08); opacity: 0.28; }
}

@keyframes mg-orb-pulse-2 {
    0%, 100% { transform: scale(1); opacity: 0.32; }
    50% { transform: scale(1.1); opacity: 0.42; }
}

.mg-scene {
    position: absolute;
    z-index: 1;
    inset: 0;
}
.mg-scene canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

/* ========== Welcome ========== */
.mg-welcome {
    position: absolute;
    z-index: 10;
    top: calc(var(--header-h) + 36px);
    left: 28px;
    width: min(420px, calc(100vw - 48px));
    color: var(--brand-white);
    text-align: left;
    pointer-events: none;
    transition: opacity 260ms ease, visibility 260ms ease;
}

.mg-welcome .mg-eyebrow {
    display: inline-flex;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.4rem 0.9rem;
    border: 1px solid rgba(255, 212, 0, 0.35);
    border-radius: 999px;
    background: rgba(255, 212, 0, 0.15);
    color: var(--brand-yellow);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.mg-welcome h1 {
    margin: 0;
    font-size: clamp(2.25rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.02em;
}

.mg-welcome h1 em {
    font-style: normal;
    color: var(--brand-yellow);
}

.mg-welcome p:last-of-type {
    margin: 1rem 0 0;
    max-width: 420px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 1.05rem;
    font-weight: 500;
    line-height: 1.6;
}

.mg-is-exploring .mg-welcome {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}

.mg-overview-islands {
    position: absolute;
    z-index: 9;
    right: 0;
    bottom: 36px;
    left: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 280px));
    justify-content: center;
    gap: 1rem;
    padding: 0 1.5rem;
    pointer-events: none;
}

.mg-overview-islands button {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
    width: 100%;
    margin: 0;
    padding: 1rem 1.15rem 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.94);
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    box-shadow: 0 16px 40px rgba(20, 30, 70, 0.22);
    backdrop-filter: blur(12px);
    pointer-events: auto;
    transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.mg-overview-islands button strong {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.mg-overview-kicker {
    color: var(--brand-blue);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mg-overview-hint {
    color: var(--text-muted);
    font-size: 0.82rem;
    font-weight: 500;
    line-height: 1.35;
}

.mg-overview-islands button:hover,
.mg-overview-islands button:focus-visible {
    border-color: transparent;
    background: var(--brand-yellow);
    outline: none;
    transform: translateY(-4px);
    box-shadow: 0 18px 36px rgba(255, 212, 0, 0.28);
}

.mg-overview-islands button:hover .mg-overview-kicker,
.mg-overview-islands button:focus-visible .mg-overview-kicker {
    color: var(--brand-blue-dark);
}

.mg-overview-islands button:hover .mg-overview-hint,
.mg-overview-islands button:focus-visible .mg-overview-hint {
    color: rgba(41, 38, 99, 0.72);
}

.mg-is-exploring .mg-overview-islands {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 1100px) {
    .mg-overview-islands {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.75rem;
        bottom: 24px;
    }

    .mg-overview-islands button {
        padding: 0.85rem 0.9rem;
    }

    .mg-overview-islands button strong {
        font-size: 0.95rem;
    }

    .mg-overview-hint {
        font-size: 0.75rem;
    }
}

.mg-scene-copy,
.mg-island-guide,
.mg-island-tabs,
.mg-floating-labels {
    visibility: hidden;
    opacity: 0;
    transition: opacity 220ms ease, visibility 220ms ease;
}

.mg-is-exploring .mg-scene-copy,
.mg-is-exploring .mg-island-guide,
.mg-is-exploring .mg-island-tabs,
.mg-is-exploring .mg-floating-labels {
    visibility: visible;
    opacity: 1;
}

.mg-scene-copy {
    position: absolute;
    z-index: 4;
    top: calc(var(--header-h) + 28px);
    left: 28px;
    max-width: 380px;
    pointer-events: none;
}

.mg-scene-copy .mg-eyebrow,
.mg-detail-kicker {
    margin: 0 0 8px;
    color: var(--brand-yellow);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-shadow: 0 1px 8px rgba(20, 30, 70, 0.35);
}

.mg-scene-copy h2 {
    margin: 0;
    color: var(--brand-white);
    font-size: clamp(1.7rem, 3vw, 2.15rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 16px rgba(20, 30, 70, 0.35);
}

.mg-scene-copy p:last-child {
    margin: 10px 0 0;
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.5;
    text-shadow: 0 1px 10px rgba(20, 30, 70, 0.3);
}

.mg-floating-labels {
    position: absolute;
    z-index: 5;
    inset: 0;
    pointer-events: none;
}

.mg-floating-label {
    position: absolute;
    max-width: 128px;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.96);
    color: var(--text-primary);
    font-size: 0.7rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    box-shadow: 0 6px 18px rgba(33, 64, 154, 0.12);
    transform: translate(-50%, -50%);
    transition: opacity 160ms ease, transform 160ms ease, border-color var(--transition), background var(--transition);
}

.mg-floating-label.is-active {
    border-color: var(--brand-blue);
    background: var(--surface-blue);
    color: var(--brand-blue);
    transform: translate(-50%, -50%) scale(1.06);
}

.mg-floating-label.is-hidden {
    opacity: 0 !important;
}

.mg-details {
    position: absolute;
    z-index: 8;
    right: 28px;
    bottom: 34px;
    width: min(360px, calc(100vw - 48px));
    padding: 1.35rem 1.4rem 1.4rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
}

.mg-details h2 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.mg-details p {
    margin: 8px 0 14px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.mg-details ul {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 0 0 18px;
    padding: 0;
    list-style: none;
}

.mg-details li {
    padding: 5px 9px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface-muted);
    color: var(--brand-blue-dark);
    font-size: 0.72rem;
    font-weight: 600;
}

.mg-details.is-highlighted {
    border-color: rgba(33, 64, 154, 0.35);
    animation: mg-card-arrival 800ms ease-out;
}

@keyframes mg-card-arrival {
    0% {
        box-shadow: 0 0 0 rgba(33, 64, 154, 0);
        transform: translateY(12px) scale(0.97);
    }
    45% {
        box-shadow: 0 0 0 10px rgba(33, 64, 154, 0.12), var(--shadow);
        transform: translateY(0) scale(1.015);
    }
    100% {
        box-shadow: var(--shadow);
        transform: translateY(0) scale(1);
    }
}

.mg-icon-button {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: var(--surface-muted);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.35rem;
    line-height: 1;
    transition: background var(--transition), color var(--transition);
}

.mg-icon-button:hover,
.mg-icon-button:focus-visible {
    background: var(--surface-blue);
    color: var(--brand-blue);
    outline: none;
}

.mg-detail-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1.15rem;
    border-radius: 999px;
    background: var(--brand-yellow);
    color: var(--brand-blue-dark);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.mg-detail-action:hover,
.mg-detail-action:focus-visible {
    background: #f5c800;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 212, 0, 0.4);
    outline: none;
}

.mg-island-guide {
    position: absolute;
    z-index: 7;
    bottom: 28px;
    left: 28px;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    width: min(320px, calc(100vw - 56px));
    padding: 0.9rem 0.95rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 16px 40px rgba(20, 30, 70, 0.22);
    backdrop-filter: blur(12px);
}

.mg-island-guide__title {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mg-island-guide__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.45rem;
}

.mg-island-guide button {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0.55rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-muted);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.25;
    text-align: left;
    transition: border-color var(--transition), background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.mg-island-guide button:hover,
.mg-island-guide button:focus-visible {
    border-color: rgba(33, 64, 154, 0.35);
    background: var(--surface-blue);
    color: var(--brand-blue);
    outline: none;
    transform: translateY(-1px);
}

.mg-island-guide button.is-active {
    border-color: transparent;
    background: var(--brand-yellow);
    color: var(--brand-blue-dark);
    box-shadow: 0 6px 16px rgba(255, 212, 0, 0.35);
}

.mg-island-tabs {
    position: absolute;
    z-index: 7;
    top: calc(var(--header-h) + 24px);
    right: 28px;
    display: flex;
    gap: 6px;
    padding: 5px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(10px);
}

.mg-island-tabs button {
    padding: 0.45rem 0.85rem;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: rgba(255, 255, 255, 0.88);
    cursor: pointer;
    font-size: 0.76rem;
    font-weight: 600;
    transition: background var(--transition), color var(--transition);
}

.mg-island-tabs button:hover,
.mg-island-tabs button:focus-visible {
    background: rgba(255, 255, 255, 0.16);
    outline: none;
}

.mg-island-tabs button[aria-pressed="true"] {
    background: var(--brand-yellow);
    color: var(--brand-blue-dark);
}

.mg-noscript {
    margin: 24px;
    color: var(--brand-white);
}

@media (max-width: 991.98px) {
    .mg-nav-toggle {
        display: inline-flex;
    }

    .mg-nav-panel {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0.25rem;
        padding: 0.75rem 1.5rem 1.1rem;
        background: rgba(255, 255, 255, 0.98);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 28px rgba(33, 64, 154, 0.1);
    }

    .mg-topbar.is-nav-open .mg-nav-panel {
        display: flex;
    }

    .mg-nav {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .mg-nav a {
        padding: 0.7rem 0.5rem;
    }

    .mg-topbar-actions {
        flex-direction: column;
        align-items: stretch;
        margin-left: 0;
        padding-top: 0.35rem;
    }

    .mg-btn-brand {
        width: 100%;
    }
}

@media (max-width: 720px) {
    .mg-topbar__inner {
        min-height: 64px;
        padding: 0 1rem;
    }

    .mg-brand-logo {
        height: 30px;
    }

    .mg-scene-copy {
        top: calc(var(--header-h) + 16px);
        left: 16px;
        max-width: 250px;
    }

    .mg-scene-copy h2 { font-size: 1.55rem; }
    .mg-scene-copy p:last-child { font-size: 0.8rem; }

    .mg-welcome {
        top: calc(var(--header-h) + 28px);
        left: 16px;
        width: min(320px, calc(100vw - 32px));
    }

    .mg-welcome h1 { font-size: 2rem; }
    .mg-welcome p:last-of-type { font-size: 0.92rem; }

    .mg-floating-label {
        max-width: 94px;
        padding: 4px 6px;
        font-size: 0.6rem;
    }

    .mg-details {
        right: 16px;
        bottom: 168px;
        left: 16px;
        width: auto;
        padding: 1.1rem;
    }

    .mg-details h2 { font-size: 1.1rem; }
    .mg-details p { font-size: 0.82rem; }

    .mg-island-guide {
        right: 12px;
        bottom: 12px;
        left: 12px;
        width: auto;
        padding: 0.75rem;
    }

    .mg-island-guide__list {
        grid-template-columns: 1fr 1fr;
        gap: 0.35rem;
        max-height: 120px;
        overflow-y: auto;
    }

    .mg-island-guide button {
        padding: 0.45rem 0.5rem;
        font-size: 0.68rem;
    }

    .mg-island-tabs {
        top: calc(var(--header-h) + 12px);
        right: 12px;
        left: 12px;
        justify-content: space-between;
        overflow-x: auto;
    }

    .mg-island-tabs button {
        padding: 0.4rem 0.55rem;
        font-size: 0.68rem;
        flex: 1 1 auto;
    }

    .mg-overview-islands {
        bottom: 16px;
        grid-template-columns: 1fr;
        gap: 0.55rem;
        padding: 0 1rem;
        max-height: 42vh;
        overflow-y: auto;
    }

    .mg-overview-islands button {
        padding: 0.75rem 0.9rem;
    }

    .mg-overview-islands button strong {
        font-size: 0.95rem;
    }

    .mg-overview-hint {
        font-size: 0.76rem;
    }

    .mg-sky-orb--1 {
        width: 180px;
        height: 180px;
        right: -20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mg-sky-mesh,
    .mg-sky-orb {
        animation: none !important;
    }
}