:root {
    --bg: #1a1510;
    --accent: #c9a227;
    --accent-dim: #8b6914;
    --text: #f5f0e6;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'jiangxizhuokai', 'Segoe UI', system-ui, sans-serif;
    color: var(--text);
}

body.body-no-scroll {
    overflow: hidden;
}

.entry-wrap {
    text-align: center;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.entry-wrap.entry-hidden {
    display: none;
}

.entry-wrap h1 {
    font-weight: 600;
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    letter-spacing: 0.12em;
    margin: 0 0 2rem;
    opacity: 0.92;
}

.btn-open-game {
    appearance: none;
    border: none;
    cursor: pointer;
    padding: 0.85rem 2.25rem;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--bg);
    background: linear-gradient(165deg, #e8d48b 0%, var(--accent) 45%, var(--accent-dim) 100%);
    border-radius: 999px;
    box-shadow:
        0 4px 0 #5c4a1a,
        0 8px 24px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.35);
    transition:
        transform 0.15s ease,
        box-shadow 0.15s ease;
}

.btn-open-game:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 0 #5c4a1a,
        0 12px 28px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-open-game:active {
    transform: translateY(1px);
    box-shadow:
        0 2px 0 #5c4a1a,
        0 4px 16px rgba(0, 0, 0, 0.35);
}

.game-root {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: auto;
}

.game-root[hidden] {
    display: none !important;
}

.game-root canvas {
    display: block;
}

.btn-close-game {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 1001;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.35rem;
    line-height: 1;
    color: var(--text);
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: background 0.15s ease;
}

.btn-close-game:hover {
    background: rgba(180, 60, 50, 0.85);
}