.free-page {
    --free-tunnel: #3961f4;
    --free-tunnel-light: rgba(57, 97, 244, .1);
    --free-short: #fa541c;
    --free-short-light: rgba(250, 84, 28, .1);
    --free-long: #52c41a;
    --free-long-light: rgba(82, 196, 26, .1);
    --free-unlimited: #a855f7;
    --free-unlimited-light: rgba(168, 85, 247, .1);
    --free-home: #13c2c2;
    --free-home-light: rgba(19, 194, 194, .1);
    --free-text-main: #1f2329;
    --free-text-sub: #646a73;
    --free-border: #e5e6eb;
    background: url("../img/help_bg.jpg") top center no-repeat;
}

.free-tunnel { color: var(--free-tunnel); }
.free-short { color: var(--free-short); }
.free-long { color: var(--free-long); }
.free-unlimited { color: var(--free-unlimited); }
.free-home { color: var(--free-home); }

.free-hero {
    padding: 64px 0;
    text-align: center;
}

.free-hero .free-hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--free-tunnel-light);
    color: var(--free-tunnel);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 24px;
}

.free-hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    color: var(--free-text-main);
    line-height: 1.25;
    margin: 0 0 24px;
}

.free-hero p {
    font-size: 18px;
    color: var(--free-text-sub);
    margin: 0 0 40px;
}

.free-section-head {
    text-align: center;
    margin-bottom: 64px;
}

.free-section-title {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 700;
    color: var(--free-text-main);
    margin: 0 0 16px;
}

.free-section-subtitle {
    font-size: 18px;
    color: var(--free-text-sub);
    max-width: 672px;
    margin: 0 auto;
}

.free-products {
    max-width: 1200px;
    margin: 0 auto;
    padding: 64px 16px;
}

.free-card-row-top {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.free-card-row-bottom {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.free-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--free-border);
    border-radius: 16px;
    padding: 24px 22px;
    overflow: hidden;
    transition: all .3s ease;
    cursor: pointer;
}

.free-card:hover {
    box-shadow: 0 8px 20px rgba(31, 35, 41, .08);
    transform: translateY(-4px);
}

.free-card.free-card-tunnel:hover { border-color: rgba(57, 97, 244, .5); }
.free-card.free-card-short:hover { border-color: rgba(250, 84, 28, .5); }
.free-card.free-card-long:hover { border-color: rgba(82, 196, 26, .5); }
.free-card.free-card-unlimited:hover { border-color: rgba(168, 85, 247, .5); }
.free-card.free-card-home:hover { border-color: rgba(19, 194, 194, .5); }

.free-card-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.free-card-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.free-card.free-card-tunnel .free-card-icon { background: var(--free-tunnel-light); }
.free-card.free-card-short .free-card-icon { background: var(--free-short-light); }
.free-card.free-card-long .free-card-icon { background: var(--free-long-light); }
.free-card.free-card-unlimited .free-card-icon { background: var(--free-unlimited-light); }
.free-card.free-card-home .free-card-icon { background: var(--free-home-light); }

.free-card.free-card-tunnel .free-card-icon i { color: var(--free-tunnel); }
.free-card.free-card-short .free-card-icon i { color: var(--free-short); }
.free-card.free-card-long .free-card-icon i { color: var(--free-long); }
.free-card.free-card-unlimited .free-card-icon i { color: var(--free-unlimited); }
.free-card.free-card-home .free-card-icon i { color: var(--free-home); }

.free-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--free-text-main);
    margin-bottom: 8px;
}

.free-card-sub {
    font-size: 14px;
    color: var(--free-text-sub);
    margin-top: 0;
}

.free-card-tag {
    position: absolute;
    top: 14px;
    right: 14px;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
}

.free-card.free-card-tunnel .free-card-tag { background: var(--free-tunnel-light); color: var(--free-tunnel); }
.free-card.free-card-short .free-card-tag { background: var(--free-short-light); color: var(--free-short); }
.free-card.free-card-long .free-card-tag { background: var(--free-long-light); color: var(--free-long); }
.free-card.free-card-unlimited .free-card-tag { background: var(--free-unlimited-light); color: var(--free-unlimited); }
.free-card.free-card-home .free-card-tag { background: var(--free-home-light); color: var(--free-home); }

.free-card-price {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.free-card.free-card-tunnel .free-card-price .num { color: var(--free-tunnel); }
.free-card.free-card-short .free-card-price .num { color: var(--free-short); }
.free-card.free-card-long .free-card-price .num { color: var(--free-long); }
.free-card.free-card-unlimited .free-card-price .num { color: var(--free-unlimited); }
.free-card.free-card-home .free-card-price .num { color: var(--free-home); }

.free-card-price .num {
    font-size: 30px;
    font-weight: 700;
}

.free-card-price .free-card-price-tag {
    font-size: 12px;
    font-weight: 520;
    padding: 2px 8px;
    border-radius: 4px;
}

.free-card.free-card-tunnel .free-card-price .free-card-price-tag { background: var(--free-tunnel-light); }
.free-card.free-card-short .free-card-price .free-card-price-tag { background: var(--free-short-light); }
.free-card.free-card-long .free-card-price .free-card-price-tag { background: var(--free-long-light); }
.free-card.free-card-unlimited .free-card-price .free-card-price-tag { background: var(--free-unlimited-light); }
.free-card.free-card-home .free-card-price .free-card-price-tag { background: var(--free-home-light); }

.free-card-features {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
}

.free-card-features li {
    display: flex;
    align-items: center;
    font-size: 13px;
    color: var(--free-text-sub);
    padding: 4px 0;
}

.free-card-features li img {
    margin-right: 8px;
    flex-shrink: 0;
}

.free-card-scene {
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 12px;
    margin-bottom: 16px;
}

.free-card.free-card-tunnel .free-card-scene { background: var(--free-tunnel-light); color: var(--free-tunnel); }
.free-card.free-card-short .free-card-scene { background: var(--free-short-light); color: var(--free-short); }
.free-card.free-card-long .free-card-scene { background: var(--free-long-light); color: var(--free-long); }
.free-card.free-card-unlimited .free-card-scene { background: var(--free-unlimited-light); color: var(--free-unlimited); }
.free-card.free-card-home .free-card-scene { background: var(--free-home-light); color: var(--free-home); }

.free-card-btn {
    display: block;
    width: 100%;
    border: none;
    cursor: pointer;
    border-radius: 8px;
    padding: 10px 0;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    transition: opacity .3s ease;
}

.free-card-btn:hover { opacity: .88; }
.free-card.free-card-tunnel .free-card-btn { background: var(--free-tunnel); }
.free-card.free-card-short .free-card-btn { background: var(--free-short); }
.free-card.free-card-long .free-card-btn { background: var(--free-long); }
.free-card.free-card-unlimited .free-card-btn { background: linear-gradient(90deg, #a855f7, #d946ef); }
.free-card.free-card-home .free-card-btn { background: var(--free-home); }

.free-card-btn:disabled,
.free-card-btn.free-btn-claimed {
    cursor: not-allowed;
    background: #f2f3f5 !important;
    color: #8f959e;
}

.free-claimed-badge {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, .82);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease;
    font-weight: 600;
    color: #646a73;
    font-size: 15px;
    flex-direction: column;
    gap: 6px;
}

.free-card.free-claimed .free-claimed-badge {
    opacity: 1;
    pointer-events: auto;
}

.free-claimed-badge .free-claimed-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--free-long-light);
    color: var(--free-long);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.free-compare {
    max-width: 1200px;
    margin: 64px auto 0;
    padding: 0 16px;
    overflow-x: auto;
}

.free-compare table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border: 1px solid var(--free-border);
    border-radius: 12px;
    overflow: hidden;
    min-width: 860px;
}

.free-compare th,
.free-compare td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid #f0f1f3;
    text-align: center;
    color: var(--free-text-sub);
    white-space: nowrap;
}

.free-compare th {
    background: rgba(57, 97, 244, .05);
    font-weight: 600;
    color: var(--free-text-main);
}

.free-compare th:first-child,
.free-compare td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--free-text-main);
}

.free-compare tr:last-child td { border-bottom: none; }
.free-compare tr:hover td { background: #fafbfc; }

.free-config-wrapper {
    background: #f3f4f6;
    padding: 32px 16px 64px;
}

.free-config-container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .05);
    overflow: hidden;
    transition: box-shadow .3s ease;
}

.free-config-container:hover {
    box-shadow: 0 6px 16px rgba(0, 0, 0, .08);
}

.free-config-head {
    padding: 24px;
    background: linear-gradient(90deg, rgba(57, 97, 244, .05), rgba(57, 97, 244, .1));
    border-bottom: 1px solid var(--free-border);
    text-align: center;
}

.free-config-head h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--free-text-main);
    margin: 0 0 10px;
}

.free-config-head p {
    font-size: 14px;
    color: var(--free-text-sub);
    margin: 0;
}

.free-no-product {
    padding: 56px 24px;
    text-align: center;
}

.free-no-product .free-no-product-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: #f2f3f5;
    color: #8f959e;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.free-no-product h3 {
    font-size: 18px;
    color: var(--free-text-main);
    margin: 0 0 14px;
}

.free-no-product p {
    font-size: 14px;
    color: var(--free-text-sub);
    max-width: 420px;
    margin: 0 auto 20px;
}

.free-selected-product {
    padding: 24px;
    border-bottom: 1px solid var(--free-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.free-selected-product .free-selected-main {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1;
    min-width: 280px;
}

.free-selected-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.free-selected-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--free-text-main);
    display: flex;
    align-items: center;
}

.free-selected-name .free-selected-flag {
    margin-left: 10px;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 999px;
}

.free-selected-desc {
    font-size: 13px;
    color: var(--free-text-sub);
    margin-top: 4px;
}

.free-selected-flag.free-card-flag-tunnel { background: var(--free-tunnel-light); color: var(--free-tunnel); }
.free-selected-flag.free-card-flag-short { background: var(--free-short-light); color: var(--free-short); }
.free-selected-flag.free-card-flag-long { background: var(--free-long-light); color: var(--free-long); }
.free-selected-flag.free-card-flag-unlimited { background: var(--free-unlimited-light); color: var(--free-unlimited); }
.free-selected-flag.free-card-flag-home { background: var(--free-home-light); color: var(--free-home); }

.free-change-btn {
    border: none;
    background: none;
    color: var(--free-tunnel);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
}

.free-change-btn:hover { text-decoration: underline; }

.free-config-section {
    padding: 24px;
    background: #f7f8fa;
}

.free-config-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--free-text-main);
    margin: 0 0 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.free-config-panel { display: none; }
.free-config-panel.free-panel-show { display: block; }

.free-config-block {
    background: #fff;
    border: 1px solid var(--free-border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 18px;
}

.free-config-block > label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--free-text-main);
    margin-bottom: 14px;
}

.free-config-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.free-config-option {
    border: 1px solid var(--free-border);
    border-radius: 10px;
    padding: 14px;
    cursor: pointer;
    transition: all .2s ease;
    display: flex;
    align-items: center;
    background: #fff;
}

.free-config-option input[type="radio"] {
    margin-right: 8px;
    accent-color: var(--free-tunnel);
}

.free-config-option .free-option-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--free-text-main);
}

.free-config-option .free-option-desc {
    font-size: 12px;
    color: var(--free-text-sub);
    margin-top: 6px;
}

.free-config-option.free-option-active {
    border-color: var(--free-tunnel);
    background: var(--free-tunnel-light);
}

.free-config-option.free-option-disabled {
    opacity: .55;
    cursor: not-allowed;
}

.free-location-selector {
    display: none;
    margin-top: 14px;
    background: #f7f8fa;
    border: 1px solid var(--free-border);
    border-radius: 10px;
    padding: 16px;
}

.free-location-selector.free-selector-visible { display: block; }

.free-location-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.free-location-row label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--free-text-main);
    margin-bottom: 8px;
}

.free-location-row select {
    width: 100%;
    height: 40px;
    border: 1px solid var(--free-border);
    border-radius: 8px;
    padding: 0 10px;
    font-size: 14px;
    color: var(--free-text-main);
    background: #fff;
    outline: none;
}

.free-location-row select:focus { border-color: var(--free-tunnel); }
.free-location-row select:disabled {
    background: #f2f3f5;
    color: #8f959e;
    cursor: not-allowed;
}

.free-location-selected {
    margin-top: 14px;
    background: #fff;
    border: 1px solid var(--free-border);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--free-text-main);
}

.free-equity-tip {
    display: flex;
    gap: 10px;
    background: var(--free-tunnel-light);
    border: 1px solid rgba(57, 97, 244, .2);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 18px;
}

.free-equity-tip i {
    color: var(--free-tunnel);
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.free-equity-tip .free-equity-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--free-text-main);
    margin-bottom: 8px;
}

.free-equity-tip .free-equity-desc {
    font-size: 12px;
    color: var(--free-text-sub);
}

.free-summary {
    background: rgba(255, 255, 255, .8);
    border: 1px solid var(--free-border);
    border-radius: 12px;
    padding: 16px 20px;
}

.free-summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 24px;
}

.free-summary-item {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid #f0f1f3;
}

.free-summary-item:last-child,
.free-summary-item:nth-last-child(2):nth-child(odd) { border-bottom: none; }

.free-summary-item .free-summary-label { color: var(--free-text-sub); }
.free-summary-item .free-summary-value { font-weight: 600; color: var(--free-text-main); }

.free-status-section {
    padding: 24px;
    border-top: 1px solid var(--free-border);
}

.free-status-card {
    text-align: center;
    padding: 16px 0;
    display: none;
}

.free-status-card.free-status-show { display: block; }

.free-status-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 14px;
}

.free-status-icon.free-status-icon-primary { background: var(--free-tunnel-light); color: var(--free-tunnel); }
.free-status-icon.free-status-icon-success { background: var(--free-long-light); color: var(--free-long); }

.free-status-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--free-text-main);
    margin: 0 0 12px;
}

.free-status-card p {
    font-size: 13px;
    color: var(--free-text-sub);
    margin: 0 0 20px;
}

.free-status-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
}

.free-btn-primary {
    display: inline-block;
    background: var(--free-tunnel);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 11px 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity .3s ease;
    text-decoration: none;
}

.free-btn-primary:hover { opacity: .88; color: #fff; }
.free-btn-primary:disabled { background: #f2f3f5; color: #8f959e; cursor: not-allowed; }

.free-btn-secondary {
    display: inline-block;
    background: #fff;
    color: var(--free-tunnel);
    border: 1px solid var(--free-tunnel);
    border-radius: 8px;
    padding: 10px 28px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all .3s ease;
    text-decoration: none;
}

.free-btn-secondary:hover { background: var(--free-tunnel-light); color: var(--free-tunnel); }

.free-status-tip {
    font-size: 12px;
    color: #8f959e;
    margin-top: 14px !important;
    margin-bottom: 0 !important;
}

.free-modal-mask {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .5);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.free-modal-mask.free-modal-show { display: flex; }

.free-modal {
    background: #fff;
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    padding: 28px 24px;
    text-align: center;
}

.free-modal-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--free-tunnel-light);
    color: var(--free-tunnel);
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}

.free-modal h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--free-text-main);
    margin: 0 0 18px;
}

.free-modal .free-modal-desc1 {
    font-size: 14px;
    color: var(--free-text-sub);
    margin: 0 0 8px;
}

.free-modal .free-modal-desc2 {
    font-size: 14px;
    color: var(--free-text-sub);
    margin: 0 0 18px;
}

.free-modal-contact {
    background: #f7f8fa;
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 18px;
}

.free-modal-contact .free-contact-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    color: var(--free-text-main);
    margin-bottom: 8px;
}

.free-modal-contact .free-contact-row:last-child { margin-bottom: 0; }
.free-modal-contact .free-contact-row i { color: var(--free-tunnel); }
.free-modal-contact .free-contact-time {
    font-size: 12px;
    color: #8f959e;
    text-align: center;
    margin-top: 10px;
}

.free-notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, .75);
    color: #fff;
    padding: 14px 22px;
    border-radius: 10px;
    font-size: 14px;
    z-index: 10000;
    max-width: 320px;
    text-align: center;
    animation: freeFadeIn .3s ease;
}

@keyframes freeFadeIn {
    from { opacity: 0; transform: translate(-50%, -46%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

.free-page .section3 li {
    background-image: none;
}

.free-page .section3 li p {
    width: calc(100% + 1px);
}

.free-page .section3 .main_title b {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 700;
    color: #1f2937;
}

@media (min-width: 768px) {
    .free-hero { padding: 96px 0; }
    .free-hero p { font-size: 20px; }
    .free-section-subtitle { font-size: 20px; }
    .free-products { padding: 96px 24px; }
}

@media (max-width: 992px) {
    .free-card-row-bottom { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .free-card-row-top,
    .free-card-row-bottom {
        grid-template-columns: 1fr;
    }
    .free-card-row-bottom { grid-template-columns: repeat(1, 1fr); }
    .free-location-row { grid-template-columns: 1fr; }
    .free-summary-grid { grid-template-columns: 1fr; }
    .free-summary-item { border-bottom: 1px solid #f0f1f3; }
    .free-summary-item:last-child { border-bottom: none; }
    .free-selected-product { flex-direction: column; align-items: flex-start; }
}