/* 基础弹窗样式 */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(12px); display: none; align-items: center; justify-content: center; z-index: 9999;
}
.modal-card {
    background: white; width: 90%; max-width: 360px; padding: 25px; border-radius: 40px;
    text-align: center; position: relative; border: 1px solid rgba(255,255,255,0.2);
}
.recommend-badge {
    position: absolute; top: 0; right: 30px; background: #ef4444; color: white;
    padding: 6px 14px; border-radius: 0 0 12px 12px; font-size: 0.7rem; font-weight: 900;
}

/* 功能图标排列 */
.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.f-box { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.f-icon-bg { width: 48px; height: 48px; border-radius: 16px; display: flex; align-items: center; justify-content: center; }
.f-box i { font-size: 1.2rem; }
.f-box span { font-size: 0.65rem; color: #64748b; font-weight: 800; }

/* 预览区与卡片 */
.main-preview-area {
    background: #eef2f6; border: 3px dashed #cbd5e1; border-radius: 30px;
    min-height: 220px; display: flex; align-items: center; justify-content: center;
    cursor: pointer; padding: 10px; transition: 0.3s;
}
@media (min-width: 1024px) { .main-preview-area { min-height: 550px; border-radius: 40px; } }

.tool-card { background: white; border-radius: 32px; border: 1px solid #f1f5f9; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02); }
.section-title { font-size: 0.75rem; font-weight: 900; color: #cbd5e1; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px; }

/* 按钮与交互 */
.btn-download-primary {
    width: 100%; background: #3b82f6; color: white; padding: 16px; border-radius: 20px;
    font-weight: 900; font-size: 1.05rem; box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.3);
}
.btn-go-wx {
    width: 100%; background: #2563eb; color: white; padding: 16px; border-radius: 20px;
    font-weight: 900; box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4);
}
.fmt-btn-new {
    background: #f1f5f9; padding: 10px 0; border-radius: 14px; font-size: 0.75rem;
    font-weight: 900; color: #64748b; border: 2px solid transparent;
}
.fmt-btn-new.active { background: white; border-color: #3b82f6; color: #3b82f6; box-shadow: 0 4px 10px rgba(59, 130, 246, 0.1); }

.spec-card { background: #f8fafc; border: 2px solid #f1f5f9; padding: 10px; border-radius: 15px; text-align: center; cursor: pointer; }
.spec-card.active { border-color: #3b82f6; background: #eff6ff; }
.spec-card b { display: block; font-size: 0.85rem; }
.spec-card span { font-size: 0.65rem; color: #94a3b8; }

.mobile-select-ui {
    width: 100%; padding: 14px; background: #f8fafc; border: 2px solid #f1f5f9; border-radius: 15px;
    font-weight: bold; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 1rem center; background-size: 1.2em;
}

.custom-range { width: 100%; height: 6px; background: #f1f5f9; border-radius: 10px; appearance: none; }
.custom-range::-webkit-slider-thumb { appearance: none; width: 18px; height: 18px; background: #3b82f6; border-radius: 50%; cursor: pointer; border: 3px solid white; box-shadow: 0 0 10px rgba(0,0,0,0.1); }

.plus-icon-btn { width: 55px; height: 55px; background: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #3b82f6; box-shadow: 0 8px 20px rgba(59, 130, 246, 0.15); margin: 0 auto; }
.qr-container { background: #f8fafc; border: 1px solid #f1f5f9; padding: 15px; border-radius: 24px; }