:root {
    --hlt-primary: #1b64f2;
    --hlt-primary-dark: #0c2461;
    --hlt-sky: #48dbfb;
    --hlt-blue-light: #eaf2ff;
    --hlt-blue-subtle: #f4f8ff;
    --hlt-dark: #1e272e;
    --hlt-border: #e2ebf6;
    --hlt-text: #2f3542;
    --hlt-text-muted: #747d8c;
    --hlt-white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    background-color: #f7faff;
    color: var(--hlt-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 13px;
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
a:hover { color: var(--hlt-primary); }

.hlt-container { max-width: 1220px; margin: 0 auto; padding: 0 15px; }

.hlt-header {
    background: var(--hlt-white);
    border-bottom: 1px solid var(--hlt-border);
}
.hlt-header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}
.hlt-logo img { height: 38px; max-width: 180px; object-fit: contain; }

.hlt-search-box {
    display: flex;
    align-items: center;
    border: 1px solid var(--hlt-border);
    border-radius: 20px;
    padding: 4px 15px;
    background: var(--hlt-blue-subtle);
    width: 320px;
}
.hlt-search-box input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 12px;
    width: 100%;
    color: #333;
}

.hlt-nav-bar {
    background: var(--hlt-white);
    border-top: 1px solid #ebf2fa;
    border-bottom: 1px solid var(--hlt-border);
}
.hlt-nav-list {
    display: flex;
    list-style: none;
    align-items: center;
    justify-content: center;
    overflow-x: auto;
    white-space: nowrap;
}
.hlt-nav-list li a {
    display: block;
    padding: 12px 22px;
    color: var(--hlt-dark);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.hlt-nav-list li a:hover, .hlt-nav-list li.active a {
    color: var(--hlt-primary);
}

.hlt-notice-bar {
    background: var(--hlt-blue-light);
    border-bottom: 1px solid #d0e3ff;
    padding: 10px 0;
    color: var(--hlt-primary);
    font-size: 12px;
}

.hlt-sec-title {
    text-align: center;
    margin: 40px 0 25px;
}
.hlt-sec-title h2 {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--hlt-dark);
}
.hlt-sec-title p {
    font-size: 12px;
    color: var(--hlt-text-muted);
    margin-top: 4px;
}

.hlt-hero-duos {
    margin: 25px 0 35px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.hlt-hero-card {
    background: linear-gradient(135deg, #0c2461 0%, #1e3799 100%);
    border-radius: 8px;
    padding: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    box-shadow: 0 4px 15px rgba(27,100,242,0.15);
}
.hlt-hero-info { flex: 1; padding-right: 15px; }
.hlt-hero-badge {
    display: inline-block;
    background: var(--hlt-sky);
    color: #000;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 20px;
    margin-bottom: 8px;
    font-weight: 700;
}
.hlt-hero-name {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.hlt-hero-price { font-size: 20px; font-weight: 800; color: #fff; }
.hlt-hero-img {
    width: 85px;
    height: 85px;
    object-fit: contain;
    background: #fff;
    padding: 6px;
    border-radius: 6px;
}

.hlt-depth-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 35px;
}
.hlt-depth-card {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 20px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}
.hlt-depth-card img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-right: 20px;
    background: var(--hlt-blue-subtle);
    padding: 6px;
    border-radius: 4px;
}
.hlt-depth-info { flex: 1; overflow: hidden; }
.hlt-depth-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--hlt-dark);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hlt-depth-price { font-size: 18px; font-weight: 800; color: var(--hlt-primary); }

.hlt-purity-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.hlt-purity-card {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 20px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.hlt-purity-card img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-right: 15px;
    background: var(--hlt-blue-light);
    padding: 4px;
    border-radius: 6px;
}
.hlt-purity-info { flex: 1; overflow: hidden; }
.hlt-purity-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--hlt-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.hlt-artesian-banner {
    background: var(--hlt-dark);
    border-radius: 6px;
    padding: 25px 20px;
    margin-bottom: 40px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    border-left: 4px solid var(--hlt-primary);
}
.hlt-artesian-card {
    background: #25313a;
    border-radius: 4px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.hlt-artesian-name {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hlt-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 40px;
}
.hlt-card-4 {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 15px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.hlt-card-4:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(27,100,242,0.08);
}
.hlt-card-4 img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-right: 12px;
    background: var(--hlt-blue-subtle);
    padding: 4px;
    border-radius: 4px;
}
.hlt-card-4-info { flex: 1; overflow: hidden; }
.hlt-card-4-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--hlt-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}
.hlt-card-4-price { font-size: 14px; font-weight: 800; color: var(--hlt-primary); }

.hlt-service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.hlt-service-card {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 20px;
    text-align: center;
}
.hlt-service-card img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    margin: 0 auto 10px;
}
.hlt-service-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--hlt-dark);
    height: 32px;
    overflow: hidden;
    margin-bottom: 4px;
}

.hlt-review-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.hlt-review-card {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 20px;
    display: flex;
    align-items: center;
}
.hlt-review-card img {
    width: 70px;
    height: 70px;
    object-fit: contain;
    margin-right: 15px;
    background: var(--hlt-blue-subtle);
    padding: 4px;
    border-radius: 6px;
}
.hlt-review-info { flex: 1; overflow: hidden; }
.hlt-review-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--hlt-dark);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hlt-delivery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.hlt-delivery-card {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.hlt-delivery-img {
    width: 55px;
    height: 55px;
    object-fit: contain;
    background: var(--hlt-blue-light);
    padding: 4px;
    border-radius: 4px;
}

.hlt-catalog-box {
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 50px;
}
.hlt-catalog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.hlt-catalog-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--hlt-blue-subtle);
    border-radius: 4px;
}
.hlt-catalog-item:hover { background: var(--hlt-blue-light); }
.hlt-catalog-left { display: flex; align-items: center; flex: 1; overflow: hidden; }
.hlt-catalog-left img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    margin-right: 10px;
    background: #fff;
    padding: 2px;
}
.hlt-catalog-title {
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hlt-catalog-right {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 10px;
}

.hlt-panel-wrap {
    max-width: 980px;
    margin: 40px auto 60px;
    background: var(--hlt-white);
    border: 1px solid var(--hlt-border);
    border-radius: 6px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}
.hlt-detail-layout {
    display: flex;
    flex-wrap: wrap;
    padding: 35px;
    gap: 35px;
}
.hlt-detail-media {
    flex: 0 0 340px;
    text-align: center;
    border-right: 1px solid var(--hlt-border);
    padding-right: 35px;
}
.hlt-detail-media img {
    max-width: 240px;
    max-height: 240px;
    object-fit: contain;
}
.hlt-detail-form { flex: 1; min-width: 300px; }
.hlt-detail-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--hlt-dark);
    margin-bottom: 12px;
}
.hlt-price-badge-box {
    background: var(--hlt-blue-light);
    border: 1px solid #d4e5ff;
    padding: 15px 20px;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}
.hlt-price-lg { font-size: 26px; font-weight: 800; color: var(--hlt-primary); }

.hlt-form-group { margin-bottom: 18px; }
.hlt-form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--hlt-dark);
    margin-bottom: 6px;
}
.hlt-form-control {
    width: 100%;
    height: 40px;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 0 12px;
    font-size: 13px;
    outline: none;
}
.hlt-form-control:focus { border-color: var(--hlt-primary); }
.hlt-btn-submit {
    width: 100%;
    height: 44px;
    background: var(--hlt-primary);
    color: var(--hlt-white);
    font-size: 14px;
    font-weight: 700;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease;
}
.hlt-btn-submit:hover { background: #1351cc; }

.hlt-tabs-head {
    display: flex;
    background: var(--hlt-blue-subtle);
    border-bottom: 1px solid var(--hlt-border);
}
.hlt-tab-btn {
    flex: 1;
    text-align: center;
    padding: 14px 0;
    font-weight: 600;
    color: #666;
    border-right: 1px solid var(--hlt-border);
}
.hlt-tab-btn:last-child { border-right: none; }
.hlt-tab-btn.active {
    background: var(--hlt-white);
    color: var(--hlt-primary);
    border-top: 3px solid var(--hlt-primary);
}

.hlt-footer {
    background: var(--hlt-primary-dark);
    color: #a4b0be;
    padding: 35px 0 25px;
    text-align: center;
    font-size: 12px;
    border-top: 3px solid var(--hlt-primary);
}
.hlt-footer-nav { margin-bottom: 12px; }
.hlt-footer-nav a { color: #dcdde1; margin: 0 12px; }
.hlt-footer-nav a:hover { color: var(--hlt-white); }
.hlt-copyright { color: #718093; font-size: 11px; }

@media (max-width: 1024px) {
    .hlt-purity-grid, .hlt-grid-4, .hlt-service-grid { grid-template-columns: repeat(2, 1fr); }
    .hlt-catalog-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .hlt-hero-duos, .hlt-depth-grid, .hlt-purity-grid, .hlt-artesian-banner, .hlt-grid-4, .hlt-service-grid, .hlt-review-grid, .hlt-delivery-grid { grid-template-columns: 1fr; }
    .hlt-detail-layout { flex-direction: column; }
    .hlt-detail-media { border-right: none; border-bottom: 1px solid var(--hlt-border); padding-right: 0; padding-bottom: 25px; }
}