.guess-page { min-height: 100vh; padding: 1.5rem 1rem; background: radial-gradient(circle at top right, #e0f7fa, #f3e5f5, #ffffff); }
.guess-title { text-align: center; font-size: 1.75rem; font-weight: 700; color: #0891b2; margin-bottom: 0.25rem; }
.guess-subtitle { text-align: center; color: #6b7280; margin-bottom: 1.5rem; }
.guess-stage { position: relative; width: 100%; max-width: 420px; margin: 0 auto 1.25rem; border-radius: 1rem; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.12); background: #000; }
.guess-stage img { width: 100%; height: auto; display: block; transition: filter 0.2s; }
.guess-cover { position: absolute; inset: 0; background: rgba(0,0,0,0.85); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.25rem; font-weight: 700; transition: opacity 0.5s; }
.guess-cover.hidden { opacity: 0; pointer-events: none; }
.guess-toolbar { max-width: 420px; margin: 0 auto 1.5rem; display: flex; flex-direction: column; gap: 0.75rem; }
.guess-slider-wrap { display: flex; align-items: center; gap: 0.75rem; background: #fff; padding: 0.75rem 1rem; border-radius: 0.75rem; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.guess-slider-wrap input { flex: 1; }
.guess-slider-wrap span { width: 3.5rem; text-align: center; font-weight: 600; color: #0891b2; }
.guess-actions { display: flex; gap: 0.75rem; }
.guess-btn { flex: 1; padding: 0.75rem; border-radius: 0.75rem; border: none; background: linear-gradient(135deg, #0891b2, #06b6d4); color: #fff; font-weight: 600; cursor: pointer; transition: transform 0.15s; text-align: center; text-decoration: none; }
.guess-btn:hover { transform: translateY(-2px); text-decoration: none; color: #fff; }
.guess-btn.secondary { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.guess-tip { text-align: center; color: #6b7280; font-size: 0.9rem; }
@media (max-width: 600px) {
    .guess-page { padding: 1rem 0.75rem; }
    .guess-title { font-size: 1.35rem; }
    .guess-subtitle { margin-bottom: 1rem; font-size: 0.85rem; }
    .guess-stage { max-width: 100%; }
    .guess-toolbar { max-width: 100%; gap: 0.6rem; }
    .guess-slider-wrap { padding: 0.6rem; gap: 0.5rem; }
    .guess-actions { flex-direction: column; }
    .guess-btn { width: 100%; box-sizing: border-box; }
    .guess-tip { font-size: 0.8rem; }
}