/* --- Section 2: Catchcopy (SONAR + KINETIC) --- */
#section_2 {
    background: #000;
    color: #fff;
    position: relative;
    width: 100%;
    height: 100vh; /* スクロール効果を魅せるため画面いっぱいに */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.sec2-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- SONAR PULSE --- */
.sonar {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0;
    /* transitionはJSでリアルタイム更新するため外すか、極小にする */
}

/* --- KINETIC PRICE --- */
.bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display);
    font-size: 30vw;
    font-weight: 900;
    color: #fff;
    opacity: 0.05;
    white-space: nowrap;
    z-index: 1;
}

.sec2-content {
    text-align: center;
    z-index: 10;
    position: relative;
}

.price-main {
    font-family: var(--font-display);
    font-size: clamp(5rem, 15vw, 15rem);
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    text-shadow: 0 0 40px rgba(0,122,255,0.5);
}

.sub-text {
    font-family: var(--font-serif);
    font-size: clamp(1.2rem, 4vw, 2.5rem);
    font-weight: 900;
    margin-top: 20px;
    letter-spacing: 0.3em;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
    line-height: 1.5;
}

.sub-text.active {
    opacity: 1;
    transform: translateY(0);
}