/* ============================================================
       所有样式都包裹在 .bl310-configurator 下，避免污染全局
       ============================================================ */

    .bl310-configurator * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    .bl310-configurator {
        font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        background: #ffffff;
        color: #1a2c3e;
        line-height: 1.5;
        overflow-x: hidden;
    }

    .bl310-configurator .fas,
    .bl310-configurator .far,
    .bl310-configurator .fab,
    .bl310-configurator .fa-solid,
    .bl310-configurator .fa-regular,
    .bl310-configurator .fa-brands,
    .bl310-configurator i[class*="fa-"] {
        font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands", sans-serif !important;
        font-weight: 400;
        font-style: normal;
        -webkit-font-smoothing: antialiased;
        display: inline-block;
        line-height: 1;
    }
    .bl310-configurator .fa-solid,
    .bl310-configurator .fas {
        font-weight: 900 !important;
    }
    .bl310-configurator .fa-brands {
        font-family: "Font Awesome 6 Brands" !important;
    }

    .bl310-configurator .bg-lines,
    .bl310-configurator .particles {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        z-index: -1;
    }
    .bl310-configurator .line {
        position: absolute;
        background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.04), transparent);
        width: 1px;
        height: 100%;
        animation: bl310-lineMove 15s linear infinite;
    }
    @keyframes bl310-lineMove {
        0% {
            transform: translateY(-100%);
        }
        100% {
            transform: translateY(100%);
        }
    }
    .bl310-configurator .particle {
        position: absolute;
        background: rgba(0, 123, 255, 0.06);
        border-radius: 50%;
        animation: bl310-particleFloat 20s infinite linear;
    }
    @keyframes bl310-particleFloat {
        0% {
            transform: translateY(0) rotate(0deg);
            opacity: 0;
        }
        10% {
            opacity: 1;
        }
        90% {
            opacity: 1;
        }
        100% {
            transform: translateY(-100vh) rotate(360deg);
            opacity: 0;
        }
    }

    .bl310-configurator .container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 20px;
    }

    .bl310-configurator .config-header {
        position: relative;
        padding: 60px 0;
        text-align: center;
        background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
        border-radius: 20px;
        margin-bottom: 40px;
        border: 1px solid #eef2f8;
        box-shadow: 0 10px 40px rgba(0, 123, 255, 0.06);
    }
    .bl310-configurator .config-header h1 {
        font-size: 3rem;
        margin-bottom: 15px;
        font-weight: 800;
        background: linear-gradient(90deg, #1e6fdf, #00c6ff);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .bl310-configurator .config-subtitle {
        font-size: 1.2rem;
        color: #5a6e7c;
        margin-bottom: 30px;
        font-weight: 500;
    }

    .bl310-configurator .config-steps {
        display: flex;
        justify-content: center;
        margin: 40px 0 60px;
        flex-wrap: wrap;
        gap: 20px;
        position: relative;
    }
    .bl310-configurator .step {
        display: flex;
        flex-direction: column;
        align-items: center;
        position: relative;
        z-index: 2;
        background: transparent;
    }
    .bl310-configurator .step-circle {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: #f1f5f9;
        border: 3px solid #e2e8f0;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        color: #94a3b8;
        margin-bottom: 12px;
        transition: all 0.3s;
        font-size: 1.3rem;
        position: relative;
        z-index: 3;
    }
    .bl310-configurator .step.active .step-circle {
        background: linear-gradient(135deg, #1e6fdf, #00c6ff);
        border-color: #1e6fdf;
        color: white;
        transform: scale(1.05);
        box-shadow: 0 5px 15px rgba(30, 111, 223, 0.2);
    }
    .bl310-configurator .step-label {
        font-size: 0.85rem;
        color: #64748b;
        font-weight: 500;
        text-align: center;
    }
    .bl310-configurator .step.active .step-label {
        color: #1e6fdf;
        font-weight: 600;
    }

    .bl310-configurator .step:not(:last-child)::after {
        content: '';
        position: absolute;
        top: 26px;
        left: calc(100% + 10px);
        width: 60px;
        height: 2px;
        background: linear-gradient(90deg, #e2e8f0, #e2e8f0);
        z-index: 1;
    }
    .bl310-configurator .step.active:not(:last-child)::after {
        background: linear-gradient(90deg, #1e6fdf, #00c6ff);
    }
    .bl310-configurator .step:last-child::after {
        display: none;
    }

    .bl310-configurator .config-section {
        margin-bottom: 40px;
        display: none;
        animation: bl310-fadeIn 0.4s ease;
    }
    .bl310-configurator .config-section.active {
        display: block;
    }
    @keyframes bl310-fadeIn {
        from {
            opacity: 0;
            transform: translateY(10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .bl310-configurator .section-header {
        display: flex;
        align-items: center;
        margin-bottom: 30px;
        padding-bottom: 15px;
        border-bottom: 2px solid #f1f5f9;
        position: relative;
    }
    .bl310-configurator .section-header::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 80px;
        height: 2px;
        background: linear-gradient(90deg, #1e6fdf, #00c6ff);
    }
    .bl310-configurator .section-icon {
        width: 60px;
        height: 60px;
        background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 20px;
        color: #1e6fdf;
        font-size: 1.8rem;
        flex-shrink: 0;
    }
    .bl310-configurator .section-icon i {
        font-size: 1.8rem;
        width: auto;
        height: auto;
    }
    .bl310-configurator .section-title {
        font-size: 1.8rem;
        font-weight: 700;
        color: #0a2540;
    }
    .bl310-configurator .section-subtitle {
        color: #5a6e7c;
        font-size: 1rem;
        margin-top: 5px;
    }

    .bl310-configurator .options-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 25px;
        overflow: visible;
    }

    .bl310-configurator .option-card {
        background: white;
        border-radius: 16px;
        padding: 25px;
        border: 2px solid #eef2f8;
        transition: all 0.3s ease;
        cursor: pointer;
        position: relative;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
        min-height: 200px;
    }
    .bl310-configurator .option-card:hover {
        transform: translateY(-5px);
        border-color: #c5d5e8;
        box-shadow: 0 15px 30px rgba(30, 111, 223, 0.08);
    }
    .bl310-configurator .option-card.selected {
        border-color: #1e6fdf;
        background: linear-gradient(135deg, rgba(30, 111, 223, 0.02), rgba(0, 198, 255, 0.02));
        box-shadow: 0 15px 30px rgba(30, 111, 223, 0.1);
    }
    .bl310-configurator .option-card.selected::before {
        content: '✓';
        position: absolute;
        top: 15px;
        right: 15px;
        width: 28px;
        height: 28px;
        background: #1e6fdf;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-weight: bold;
        font-size: 0.9rem;
    }
    .bl310-configurator .option-card.disabled {
        opacity: 0.45;
        cursor: not-allowed;
        pointer-events: none;
        background: #f8fafc;
        filter: grayscale(0.05);
    }
    .bl310-configurator .option-header {
        display: flex;
        align-items: center;
        margin-bottom: 20px;
    }
    .bl310-configurator .option-icon {
        width: 50px;
        height: 50px;
        background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 15px;
        color: #1e6fdf;
        flex-shrink: 0;
    }
    .bl310-configurator .option-icon i {
        font-size: 1.5rem;
        width: auto;
        height: auto;
    }
    .bl310-configurator .option-card.selected .option-icon {
        background: linear-gradient(135deg, #1e6fdf, #00c6ff);
        color: white;
    }
    .bl310-configurator .option-title {
        font-size: 1.3rem;
        font-weight: 600;
        color: #0a2540;
    }
    .bl310-configurator .option-desc {
        color: #475569;
        line-height: 1.6;
        font-size: 0.9rem;
    }
    .bl310-configurator .option-specs {
        margin-top: 15px;
        padding-top: 15px;
        border-top: 1px solid #f1f5f9;
    }
    .bl310-configurator .spec-item {
        display: flex;
        justify-content: space-between;
        padding: 5px 0;
        color: #5a6e7c;
        font-size: 0.85rem;
    }
    .bl310-configurator .spec-value {
        font-weight: 600;
        color: #1e6fdf;
    }

    .bl310-configurator .wireless-options {
        display: flex;
        gap: 20px;
        margin-top: 20px;
        flex-wrap: wrap;
    }
    .bl310-configurator .wireless-option {
        flex: 1;
        min-width: 180px;
        background: white;
        border-radius: 12px;
        padding: 20px;
        border: 2px solid #eef2f8;
        transition: all 0.3s;
        cursor: pointer;
        text-align: center;
    }
    .bl310-configurator .wireless-option:hover {
        border-color: #c5d5e8;
        transform: translateY(-3px);
    }
    .bl310-configurator .wireless-option.selected {
        border-color: #1e6fdf;
        background: linear-gradient(135deg, rgba(30, 111, 223, 0.02), rgba(0, 198, 255, 0.02));
    }
    .bl310-configurator .wireless-icon {
        font-size: 2rem;
        color: #94a3b8;
        margin-bottom: 10px;
    }
    .bl310-configurator .wireless-option.selected .wireless-icon {
        color: #1e6fdf;
    }
    .bl310-configurator .wireless-title {
        font-weight: 600;
        color: #0a2540;
        margin-bottom: 5px;
    }

    .bl310-configurator .config-nav {
        display: flex;
        justify-content: space-between;
        margin-top: 50px;
        padding-top: 30px;
        border-top: 1px solid #f1f5f9;
        flex-wrap: wrap;
        gap: 12px;
    }
    .bl310-configurator .nav-btn {
        display: flex;
        align-items: center;
        gap: 10px;
        background: linear-gradient(135deg, #1e6fdf, #00c6ff);
        color: white;
        border: none;
        padding: 14px 32px;
        border-radius: 12px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s;
        box-shadow: 0 5px 15px rgba(30, 111, 223, 0.15);
    }
    .bl310-configurator .nav-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 20px rgba(30, 111, 223, 0.25);
    }
    .bl310-configurator .nav-btn:disabled {
        background: #cbd5e1;
        cursor: not-allowed;
        transform: none;
        box-shadow: none;
    }
    .bl310-configurator .nav-btn.prev {
        background: #f1f5f9;
        color: #5a6e7c;
        box-shadow: none;
    }
    .bl310-configurator .nav-btn.prev:hover:not(:disabled) {
        background: #e2e8f0;
        transform: translateY(-3px);
    }

    .bl310-configurator .result-section {
        background: white;
        border-radius: 20px;
        padding: 40px;
        margin-top: 50px;
        border: 1px solid #eef2f8;
        display: none;
        animation: bl310-fadeIn 0.5s;
    }
    .bl310-configurator .result-section.active {
        display: block;
    }
    .bl310-configurator .final-model {
        background: linear-gradient(135deg, #f8fafc, #f1f5f9);
        border-radius: 16px;
        padding: 30px;
        text-align: center;
        margin: 30px 0;
        border: 2px solid #eef2f8;
    }
    .bl310-configurator .model-value {
        font-size: 1.8rem;
        font-weight: 800;
        color: #1e6fdf;
        word-break: break-all;
        font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Cascadia Code', monospace;
        letter-spacing: 0.3px;
    }
    .bl310-configurator .specs-summary {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
        margin-top: 30px;
    }
    .bl310-configurator .spec-summary-card {
        background: white;
        border-radius: 12px;
        padding: 20px;
        border: 1px solid #eef2f8;
    }
    .bl310-configurator .spec-summary-title {
        font-weight: 600;
        color: #1e6fdf;
        font-size: 0.85rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 8px;
    }
    .bl310-configurator .spec-summary-value {
        font-weight: 700;
        color: #0a2540;
        font-size: 1.1rem;
        margin-bottom: 4px;
    }
    .bl310-configurator .spec-summary-desc {
        color: #5a6e7c;
        font-size: 0.85rem;
    }

    .bl310-configurator .warning-box {
        background: rgba(255, 193, 7, 0.08);
        border: 1px solid #ffc107;
        border-radius: 12px;
        padding: 20px;
        margin: 20px 0;
        display: none;
        align-items: center;
        gap: 15px;
    }
    .bl310-configurator .warning-box.active {
        display: flex;
        animation: bl310-fadeIn 0.3s;
    }

    .bl310-configurator .y-slot-section {
        margin-bottom: 40px;
    }
    .bl310-configurator .y-slot-header {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 20px;
        padding-bottom: 12px;
        border-bottom: 2px solid #eef2f8;
        flex-wrap: wrap;
    }
    .bl310-configurator .y-slot-header .slot-icon {
        width: 36px;
        height: 36px;
        background: #eef2ff;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #1e6fdf;
        font-size: 1.1rem;
    }
    .bl310-configurator .y-slot-header .slot-title {
        font-size: 1.2rem;
        font-weight: 600;
        color: #0a2540;
    }
    .bl310-configurator .y-slot-header .slot-badge {
        font-size: 0.7rem;
        padding: 4px 12px;
        border-radius: 20px;
        background: #e6f7e6;
        color: #2e7d32;
        font-weight: 500;
    }
    .bl310-configurator .slot-2-section {
        margin-top: 40px;
        border-top: 2px dashed #cbd5e1;
        padding-top: 30px;
    }
    .bl310-configurator .info-tip {
        background: linear-gradient(135deg, #eef2ff, #f5f9ff);
        border-left: 4px solid #1e6fdf;
        padding: 14px 20px;
        border-radius: 12px;
        margin-bottom: 30px;
        display: flex;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
    }
    .bl310-configurator .info-tip i {
        font-size: 1.2rem;
        color: #1e6fdf;
    }
    .bl310-configurator .info-tip span {
        color: #1e2c3e;
        font-size: 0.9rem;
    }
    .bl310-configurator .info-tip strong {
        color: #1e6fdf;
    }
    .bl310-configurator .scroll-hint {
        display: inline-block;
        background: #e8f0fe;
        border-radius: 20px;
        padding: 4px 12px;
        font-size: 0.7rem;
        color: #1e6fdf;
        margin-left: 12px;
    }

    .bl310-configurator .example-model {
        font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Cascadia Code', monospace;
        font-weight: 700;
        color: #1e6fdf;
        margin-bottom: 8px;
        font-size: 0.9rem;
        letter-spacing: 0.3px;
    }

    .bl310-configurator .result-title {
        font-size: 1.8rem;
        font-weight: 700;
        color: #0a2540;
        text-align: center;
        margin-bottom: 10px;
    }
    .bl310-configurator .model-label {
        font-size: 1rem;
        color: #5a6e7c;
        margin-bottom: 8px;
    }

    @media (max-width: 1024px) {
        .bl310-configurator .options-grid {
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        }
    }

    @media (max-width: 768px) {
        .bl310-configurator .config-header h1 {
            font-size: 2rem;
        }
        .bl310-configurator .options-grid {
            grid-template-columns: 1fr;
        }
        .bl310-configurator .step:not(:last-child)::after {
            width: 25px;
            left: calc(100% + 4px);
            top: 22px;
        }
        .bl310-configurator .step-circle {
            width: 40px;
            height: 40px;
            font-size: 1rem;
        }
        .bl310-configurator .info-tip {
            font-size: 0.85rem;
        }
        .bl310-configurator .section-icon,
        .bl310-configurator .option-icon {
            width: 48px;
            height: 48px;
        }
        .bl310-configurator .section-icon i,
        .bl310-configurator .option-icon i {
            font-size: 1.4rem;
        }
        .bl310-configurator .model-value {
            font-size: 1.2rem;
        }
        .bl310-configurator .scroll-hint {
            font-size: 0.6rem;
            margin-left: 6px;
        }
        .bl310-configurator .config-nav {
            flex-direction: column;
            align-items: stretch;
        }
        .bl310-configurator .nav-btn {
            justify-content: center;
        }
        .bl310-configurator .config-steps {
            gap: 12px;
        }
        .bl310-configurator .step-label {
            font-size: 0.7rem;
        }
        .bl310-configurator .section-title {
            font-size: 1.3rem;
        }
        .bl310-configurator .config-header {
            padding: 30px 0;
        }
        .bl310-configurator .config-subtitle {
            font-size: 1rem;
        }
        .bl310-configurator .option-card {
            min-height: auto;
            padding: 20px;
        }
        .bl310-configurator .option-title {
            font-size: 1.1rem;
        }
    }

    @media (max-width: 480px) {
        .bl310-configurator .config-header h1 {
            font-size: 1.5rem;
        }
        .bl310-configurator .step:not(:last-child)::after {
            width: 16px;
            left: calc(100% + 2px);
            top: 18px;
        }
        .bl310-configurator .step-circle {
            width: 32px;
            height: 32px;
            font-size: 0.8rem;
        }
        .bl310-configurator .container {
            padding: 10px;
        }
        .bl310-configurator .option-card {
            padding: 16px;
        }
        .bl310-configurator .option-specs .spec-item {
            font-size: 0.75rem;
        }
        .bl310-configurator .nav-btn {
            padding: 12px 20px;
            font-size: 0.9rem;
        }
        .bl310-configurator .result-section {
            padding: 20px;
        }
        .bl310-configurator .specs-summary {
            grid-template-columns: 1fr;
        }
    }