/* ===== 海底火山专属样式 ===== */

/* ---- Hero ---- */
.submarine-hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0a1628 0%, #0d2b4a 40%, #0a1a2e 100%);
    padding-top: 72px;
}
.submarine-hero-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
}
.submarine-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--space-lg);
}
.submarine-hero-content h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.submarine-hero-content p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.75);
    line-height: 1.8;
    max-width: 640px;
    margin: 0 auto;
}

/* ---- Section Canvas ---- */
.submarine-section-canvas {
    width: 100%;
    height: 420px;
    background: linear-gradient(180deg, #0a1628 0%, #0d2b4a 50%, #0a1a2e 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

/* ---- Eruption Compare ---- */
.eruption-compare-wrap {
    width: 100%;
    height: 380px;
    position: relative;
}
.eruption-compare-wrap canvas {
    width: 100%; height: 100%;
    display: block;
}

/* ---- Structure Canvas ---- */
.structure-canvas-wrap {
    width: 100%;
    height: 380px;
    position: relative;
}
.structure-canvas-wrap canvas {
    width: 100%; height: 100%;
    display: block;
}

/* ---- Submarine Map ---- */
.submarine-map-wrap {
    width: 100%;
    height: 420px;
    position: relative;
    background: #e8f4f8;
    border-radius: var(--radius-xl);
    overflow: hidden;
}
.submarine-map-wrap canvas {
    width: 100%; height: 100%;
    display: block;
}

/* ---- Hydrothermal Canvas ---- */
.hydrothermal-canvas {
    width: 100%;
    height: 420px;
    background: linear-gradient(180deg, #0a1628 0%, #0d2b4a 50%, #1a3a5c 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

/* ---- Responsive ---- */
@media (max-width: 1023px) {
    .submarine-section-canvas { height: 340px; }
    .eruption-compare-wrap { height: 320px; }
    .structure-canvas-wrap { height: 320px; }
    .submarine-map-wrap { height: 340px; }
    .hydrothermal-canvas { height: 340px; }
}
@media (max-width: 767px) {
    .submarine-section-canvas { height: 280px; }
    .eruption-compare-wrap { height: 260px; }
    .structure-canvas-wrap { height: 260px; }
    .submarine-map-wrap { height: 280px; }
    .hydrothermal-canvas { height: 280px; }
    .submarine-hero { min-height: 50vh; }
}