/* ===== 舒尔特方格 ===== */
#sgApp .sg-hero { text-align: center; padding: 12px 10px 0; }
#sgApp .sg-hero h1 { font-size: 30px; font-weight: 800; color: var(--c-text); margin-bottom: 10px; }
#sgApp .sg-hero p { font-size: 15px; color: var(--c-text-sub); line-height: 1.7; }

#sgApp .sg-bar { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 18px 0; }
#sgApp .sg-tab {
    border: 2px solid var(--c-primary); background: transparent; color: var(--c-primary);
    border-radius: 999px; padding: 8px 16px; font-size: 14px; font-weight: 700;
    cursor: pointer; transition: background .15s, color .15s;
}
#sgApp .sg-tab.is-on { background: var(--c-primary); color: #fff; }
#sgApp .sg-tab.gray { border-color: var(--c-border); color: var(--c-text-sub); }
#sgApp .sg-tab.gray.is-on { background: var(--c-text-sub); color: #fff; border-color: var(--c-text-sub); }

#sgApp .sg-panel {
    max-width: 620px; margin: 0 auto; background: var(--c-surface);
    border: 1px solid var(--c-border); border-radius: var(--radius-md);
    padding: 22px 18px; box-shadow: var(--shadow-md); text-align: center;
}
#sgApp .sg-hud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 16px; }
#sgApp .sg-chip {
    background: var(--c-surface-soft); border: 1px solid var(--c-border); border-radius: 999px;
    padding: 7px 14px; font-size: 14px; font-weight: 700; color: var(--c-text-sub);
}
#sgApp .sg-chip b { color: var(--c-primary); font-size: 17px; }

#sgApp .sg-tip {
    display: inline-block; margin-bottom: 14px; padding: 9px 18px; border-radius: 999px;
    background: var(--c-primary-soft); border: 1px solid var(--c-border);
    font-size: 16px; font-weight: 800; color: var(--c-primary);
}

#sgApp .sg-grid { display: grid; gap: 8px; margin: 0 auto; max-width: 500px; }
#sgApp .sg-cell {
    aspect-ratio: 1 / 1; border: 2px solid var(--c-border); border-radius: 12px;
    background: var(--c-surface-soft); color: var(--c-text);
    font-size: clamp(16px, 4.2vw, 28px); font-weight: 800; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: transform .12s, background .15s, color .15s, border-color .15s;
    user-select: none;
}
#sgApp .sg-cell:hover { border-color: var(--c-primary); color: var(--c-primary); }
#sgApp .sg-cell.done { background: var(--c-primary-soft); color: var(--c-primary); border-color: var(--c-primary); opacity: .55; }
#sgApp .sg-cell.hit { animation: sgPop .3s ease; }
#sgApp .sg-cell.bad { animation: sgShake .32s ease; border-color: #e03131; color: #e03131; background: #fff0f0; }
@keyframes sgPop { 0% { transform: scale(1); } 45% { transform: scale(1.16); } 100% { transform: scale(1); } }
@keyframes sgShake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }

#sgApp .sg-mask {
    margin: 0 auto; max-width: 500px; aspect-ratio: 1 / 1; border-radius: 16px;
    border: 2px dashed var(--c-primary); background: var(--c-primary-soft);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 20px;
}
#sgApp .sg-mask .big { font-size: 40px; line-height: 1; margin-bottom: 12px; }
#sgApp .sg-mask .t1 { font-size: 22px; font-weight: 800; color: var(--c-primary); margin-bottom: 8px; }
#sgApp .sg-mask .t2 { font-size: 14px; color: var(--c-text-sub); line-height: 1.8; }

#sgApp .sg-msg { font-size: 17px; font-weight: 800; min-height: 26px; margin-top: 16px; color: var(--c-text); }
#sgApp .sg-msg.ok { color: var(--c-primary); }
#sgApp .sg-msg.bad { color: #e03131; }

#sgApp .sg-ctrl { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 18px; }
#sgApp .sg-btn {
    border: none; border-radius: 999px; padding: 12px 20px; font-size: 15px; font-weight: 700;
    color: #fff; cursor: pointer; background: linear-gradient(135deg, var(--c-primary), var(--c-accent-cyan));
    box-shadow: var(--shadow-md);
}
#sgApp .sg-btn.gray { background: var(--c-surface-2); color: var(--c-text); box-shadow: none; border: 1px solid var(--c-border); }

#sgApp .sg-stat {
    max-width: 620px; margin: 18px auto 0; background: var(--c-surface);
    border: 1px solid var(--c-border); border-radius: var(--radius-md);
    padding: 14px 18px; box-shadow: var(--shadow-md); text-align: center;
    font-size: 14px; line-height: 1.9; color: var(--c-text-sub);
}
#sgApp .sg-stat b { color: var(--c-primary); font-size: 17px; }

#sgApp .sg-ai, #sgApp .sg-info { max-width: 720px; margin: 30px auto 0; }
#sgApp .sg-ai h2, #sgApp .sg-info h2 { font-size: 20px; font-weight: 800; color: var(--c-text); margin-bottom: 10px; }
#sgApp .sg-ai p { font-size: 14px; color: var(--c-text-sub); line-height: 1.8; margin-bottom: 14px; }
#sgApp .sg-ai-row { display: flex; gap: 10px; flex-wrap: wrap; }
#sgApp .sg-out {
    margin-top: 14px; background: var(--c-surface-soft); border: 1px solid var(--c-border);
    border-radius: var(--radius-sm); padding: 16px 18px;
    font-size: 15px; line-height: 1.85; color: var(--c-text); white-space: pre-wrap;
}
#sgApp .sg-info ul { list-style: disc; padding-left: 22px; margin-bottom: 24px; }
#sgApp .sg-info li { font-size: 14px; line-height: 1.9; color: var(--c-text-sub); margin-bottom: 8px; }
#sgApp .sg-info li b { color: var(--c-text); }

@media (max-width: 560px) {
    #sgApp .sg-hero h1 { font-size: 24px; }
    #sgApp .sg-grid { gap: 6px; }
}