/* ============================== */
    /* SCREW PILES PAGE STYLES        */
    /* ============================== */

    /* HERO (dark, image bg) */
    .sp-hero {
        position: relative;
        min-height: 420px;
        display: flex;
        align-items: flex-end;
        overflow: hidden;
        background: var(--black);
        color: white;
    }

    .sp-hero-bg {
        position: absolute;
        top: 0; left: 0; width: 100%; height: 100%;
        background: #2a2a2a;
        z-index: 0;
    }

    .sp-hero-bg img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .sp-hero::before {
        content: '';
        position: absolute;
        top: 0; left: 0; width: 100%; height: 100%;
        background: linear-gradient(135deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.50) 50%, rgba(0,0,0,0.30) 100%);
        z-index: 1;
    }

    .sp-hero-content {
        position: relative;
        z-index: 2;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 72px 48px 52px;
        width: 100%;
    }

    .sp-hero-eyebrow {
        font-size: 12px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 3px;
        color: var(--red);
        margin-bottom: 14px;
    }

    .sp-hero h1 {
        font-size: 44px;
        font-weight: 800;
        line-height: 1.15;
        margin-bottom: 18px;
        max-width: 650px;
    }

    .sp-hero p {
        font-size: 17px;
        line-height: 1.7;
        color: rgba(255,255,255,0.8);
        max-width: 580px;
    }

    /* TAB NAVIGATION (sticky) */
    .sp-tab-bar {
        position: sticky;
        top: 72px;
        z-index: 100;
        background: var(--white);
        border-bottom: 2px solid var(--light-gray);
    }

    .sp-tab-bar-inner {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 48px;
        display: flex;
        gap: 0;
    }

    .sp-tab-link {
        padding: 18px 32px;
        font-size: 15px;
        font-weight: 700;
        color: var(--mid-gray);
        text-decoration: none;
        border-bottom: 3px solid transparent;
        margin-bottom: -2px;
        transition: all 0.2s;
        white-space: nowrap;
    }

    .sp-tab-link:hover {
        color: var(--black);
    }

    .sp-tab-link.active {
        color: var(--red);
        border-bottom-color: var(--red);
    }

    /* OVERVIEW SECTION */
    .sp-overview {
        padding: 56px 0;
        background: var(--white);
    }

    .sp-overview-inner {
        max-width: 800px;
        margin: 0 auto;
        text-align: center;
    }

    .sp-overview h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--black);
        line-height: 1.2;
        margin-bottom: 20px;
    }

    .sp-overview p {
        font-size: 16px;
        color: var(--dark-gray);
        line-height: 1.8;
        margin-bottom: 28px;
    }

    .sp-download-links {
        display: flex;
        justify-content: center;
        gap: 24px;
        flex-wrap: wrap;
    }

    .sp-download-link {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 28px;
        background: var(--bg-gray);
        border-radius: 8px;
        font-size: 14px;
        font-weight: 700;
        color: var(--black);
        text-decoration: none;
        transition: all 0.2s;
        border: 1px solid var(--light-gray);
    }

    .sp-download-link:hover {
        background: var(--red-light);
        border-color: var(--red);
        color: var(--red);
    }

    .sp-download-link svg {
        width: 18px;
        height: 18px;
        stroke: currentColor;
        fill: none;
        stroke-width: 2;
    }

    /* PRODUCT SERIES SECTIONS */
    .sp-series {
        padding: 56px 0;
    }

    .sp-series.bg-gray {
        background: var(--bg-gray);
    }

    .sp-series.bg-white {
        background: var(--white);
    }

    .sp-series-header {
        margin-bottom: 8px;
    }

    .sp-series-logo {
        height: 52px;
        width: auto;
        display: block;
    }

    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0,0,0,0);
        border: 0;
    }

    .sp-series-intro {
        display: grid;
        grid-template-columns: 1.2fr 0.8fr;
        gap: 60px;
        align-items: start;
        margin-bottom: 48px;
    }

    .sp-series-intro p {
        font-size: 16px;
        color: var(--dark-gray);
        line-height: 1.8;
        margin-bottom: 16px;
    }

    .sp-series-intro-specs {
        list-style: none;
        margin-bottom: 20px;
    }

    .sp-series-intro-specs li {
        font-size: 15px;
        color: var(--dark-gray);
        padding: 8px 0;
        padding-left: 24px;
        position: relative;
        border-bottom: 1px solid #f0f0f0;
    }

    .sp-series-intro-specs li::before {
        content: '\2713';
        position: absolute;
        left: 0;
        color: var(--red);
        font-weight: 700;
    }

    .sp-series-intro-specs li:last-child {
        border-bottom: none;
    }

    .sp-guarantee {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 16px 24px;
        background: var(--black);
        color: white;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 700;
    }

    .sp-guarantee.helix-guarantee {
        background: var(--red);
    }

    .sp-guarantee-number {
        font-size: 28px;
        font-weight: 800;
        line-height: 1;
    }

    .sp-series-image {
        height: 360px;
        background: #e8e8e8;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
    }

    .sp-series-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    /* HELIX installation methods 2x2 grid */
    .sp-install-methods {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        border-radius: 12px;
        overflow: hidden;
    }

    .sp-install-method {
        position: relative;
        aspect-ratio: 4/3;
        overflow: hidden;
    }

    .sp-install-method img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        transition: transform 0.4s ease;
    }

    .sp-install-method:hover img {
        transform: scale(1.04);
    }

    .sp-install-method span {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 6px 10px;
        background: linear-gradient(transparent, rgba(0,0,0,0.65));
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 0.02em;
    }

    /* SUB-TABS */
    .sp-subtabs {
        display: flex;
        gap: 0;
        border-bottom: 2px solid var(--light-gray);
        margin-bottom: 40px;
    }

    .sp-subtab {
        padding: 14px 28px;
        font-size: 14px;
        font-weight: 700;
        color: var(--mid-gray);
        background: none;
        border: none;
        border-bottom: 3px solid transparent;
        margin-bottom: -2px;
        cursor: pointer;
        transition: all 0.2s;
        font-family: inherit;
    }

    .sp-subtab:hover {
        color: var(--black);
    }

    .sp-subtab.active {
        color: var(--red);
        border-bottom-color: var(--red);
    }

    .sp-subtab-panel {
        display: none;
    }

    .sp-subtab-panel.active {
        display: block;
    }

    /* ADVANTAGE CARDS (grid) */
    .sp-advantages-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .sp-advantage-card {
        background: white;
        border-radius: 10px;
        padding: 28px 22px;
        border: 1px solid var(--light-gray);
        transition: box-shadow 0.3s;
    }

    .sp-advantage-card:hover {
        box-shadow: 0 6px 28px rgba(0,0,0,0.06);
    }

    .bg-white .sp-advantage-card {
        background: var(--bg-gray);
        border-color: transparent;
    }

    .sp-advantage-icon {
        width: 44px;
        height: 44px;
        background: var(--red-light);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 16px;
    }

    .sp-advantage-icon svg {
        width: 20px;
        height: 20px;
        stroke: var(--red);
        fill: none;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
    }

    .sp-advantage-label {
        font-size: 11px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: var(--red);
        margin-bottom: 8px;
    }

    .sp-advantage-card h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--black);
        margin-bottom: 8px;
        line-height: 1.3;
    }

    .sp-advantage-card p {
        font-size: 14px;
        color: var(--dark-gray);
        line-height: 1.6;
    }

    .sp-series-cta {
        margin-top: 36px;
    }

    /* CASE STUDY CALLOUTS */
    .sp-case-callouts {
        margin-top: 40px;
        padding-top: 32px;
        border-top: 1px solid var(--light-gray);
    }
    .sp-case-callouts h4 {
        font-size: 13px;
        text-transform: uppercase;
        letter-spacing: 1px;
        color: var(--mid-gray);
        margin-bottom: 16px;
    }
    .sp-case-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    .sp-case-card {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 14px;
        border: 1px solid var(--light-gray);
        border-radius: 8px;
        text-decoration: none;
        color: inherit;
        transition: border-color 0.2s, box-shadow 0.2s;
    }
    .sp-case-card:hover {
        border-color: var(--red);
        box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    }
    .sp-case-card img {
        width: 72px;
        height: 54px;
        object-fit: cover;
        border-radius: 4px;
        flex-shrink: 0;
    }
    .sp-case-card-text strong {
        display: block;
        font-size: 14px;
        margin-bottom: 2px;
    }
    .sp-case-card-text span {
        font-size: 12px;
        color: var(--mid-gray);
    }
    @media (max-width: 768px) {
        .sp-case-grid { grid-template-columns: 1fr; }
    }

    /* APPLICATIONS LIST */
    .sp-applications-list {
        list-style: none;
        columns: 2;
        column-gap: 40px;
    }

    .sp-applications-list li {
        font-size: 15px;
        color: var(--dark-gray);
        padding: 8px 0;
        padding-left: 22px;
        position: relative;
        break-inside: avoid;
    }

    .sp-applications-list li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 14px;
        width: 8px;
        height: 8px;
        background: var(--red);
        border-radius: 2px;
    }

    /* INSTALLATION INFO */
    .sp-install-info {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .sp-install-info h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--black);
        margin-bottom: 12px;
    }

    .sp-install-info p {
        font-size: 15px;
        color: var(--dark-gray);
        line-height: 1.7;
    }

    .sp-install-info ul {
        list-style: none;
        margin-top: 12px;
    }

    .sp-install-info li {
        font-size: 14px;
        color: var(--dark-gray);
        padding: 5px 0;
        padding-left: 20px;
        position: relative;
    }

    .sp-install-info li::before {
        content: '\2713';
        position: absolute;
        left: 0;
        color: var(--red);
        font-weight: 700;
    }

    /* INSTALLATION STEPS (numbered visual guide) */
    .sp-install-steps {
        display: flex;
        flex-direction: column;
        gap: 36px;
    }

    .sp-install-step {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        align-items: center;
    }

    .sp-install-step:nth-child(even) .sp-install-step-img {
        order: -1;
    }

    .sp-install-step-number {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--red);
        color: #fff;
        font-size: 18px;
        font-weight: 700;
        border-radius: 50%;
        flex-shrink: 0;
        margin-right: 12px;
        vertical-align: middle;
    }

    .sp-install-step h4 {
        display: inline;
        font-size: 18px;
        font-weight: 700;
        color: var(--black);
        vertical-align: middle;
    }

    .sp-install-step-header {
        display: flex;
        align-items: center;
        margin-bottom: 12px;
    }

    .sp-install-step p {
        font-size: 15px;
        color: var(--dark-gray);
        line-height: 1.7;
        margin-top: 8px;
    }

    .sp-install-step-img img {
        width: 100%;
        border-radius: 10px;
        display: block;
    }

    .sp-install-intro {
        max-width: 700px;
        margin-bottom: 28px;
    }

    .sp-install-intro p {
        font-size: 15px;
        color: var(--dark-gray);
        line-height: 1.7;
    }

    .sp-install-tools {
        margin-top: 36px;
        padding: 24px 28px;
        background: var(--bg-gray);
        border-radius: 10px;
    }

    .sp-install-tools h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--black);
        margin-bottom: 10px;
    }

    .sp-install-tools ul {
        list-style: none;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 6px 24px;
    }

    .sp-install-tools li {
        font-size: 14px;
        color: var(--dark-gray);
        padding: 4px 0 4px 20px;
        position: relative;
    }

    .sp-install-tools li::before {
        content: '\2713';
        position: absolute;
        left: 0;
        color: var(--red);
        font-weight: 700;
    }

    /* SIZES TABLE */
    .sp-sizes-table {
        width: 100%;
        border-collapse: collapse;
        font-size: 14px;
    }

    .sp-sizes-table thead {
        background: var(--black);
        color: white;
    }

    .sp-sizes-table th {
        padding: 14px 18px;
        text-align: left;
        font-weight: 700;
        font-size: 13px;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .sp-sizes-table td {
        padding: 12px 18px;
        border-bottom: 1px solid var(--light-gray);
        color: var(--dark-gray);
    }

    .sp-sizes-table tbody tr:hover {
        background: var(--red-light);
    }

    .sp-sizes-note {
        font-size: 13px;
        color: var(--mid-gray);
        margin-top: 14px;
        font-style: italic;
    }

    /* WHY HELICAL PILES (4-quad grid) */
    .sp-why-section {
        padding: 56px 0;
        background: var(--black);
        color: white;
    }

    .sp-why-header {
        text-align: center;
        margin-bottom: 56px;
    }

    .sp-why-header h2 {
        font-size: 36px;
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 16px;
    }

    .sp-why-header p {
        font-size: 16px;
        color: rgba(255,255,255,0.6);
        max-width: 640px;
        margin: 0 auto;
    }

    .sp-why-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .sp-why-card {
        background: rgba(255,255,255,0.05);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 12px;
        padding: 36px 32px;
    }

    .sp-why-card h3 {
        font-size: 20px;
        font-weight: 700;
        color: white;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .sp-why-card h3 svg {
        width: 24px;
        height: 24px;
        stroke: var(--red);
        fill: none;
        stroke-width: 2;
        flex-shrink: 0;
    }

    .sp-why-card ul {
        list-style: none;
    }

    .sp-why-card li {
        font-size: 15px;
        color: rgba(255,255,255,0.7);
        padding: 6px 0;
        padding-left: 20px;
        position: relative;
        line-height: 1.5;
    }

    .sp-why-card li::before {
        content: '\2713';
        position: absolute;
        left: 0;
        color: var(--red);
        font-weight: 700;
        font-size: 13px;
    }

    /* SIZE COMPARISON VISUAL */
    .sp-sizes-section {
        padding: 56px 0;
        background: var(--bg-gray);
    }

    .sp-sizes-header {
        text-align: center;
        margin-bottom: 56px;
    }

    .sp-sizes-header h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--black);
        line-height: 1.2;
        margin-bottom: 12px;
    }

    .sp-sizes-visual {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        align-items: end;
    }

    .sp-size-card {
        background: white;
        border-radius: 12px;
        padding: 28px 20px;
        text-align: center;
        border: 1px solid var(--light-gray);
        transition: box-shadow 0.3s;
    }

    .sp-size-card:hover {
        box-shadow: 0 8px 32px rgba(0,0,0,0.08);
    }

    .sp-size-pile {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: 20px;
    }

    .sp-size-pile-shaft {
        width: 6px;
        background: var(--dark-gray);
        border-radius: 3px 3px 0 0;
    }

    .sp-size-pile-helix {
        width: 40px;
        height: 8px;
        background: var(--red);
        border-radius: 4px;
        position: relative;
    }

    .sp-size-pile-helix::after {
        content: '';
        position: absolute;
        top: -4px;
        left: 50%;
        transform: translateX(-50%);
        width: 6px;
        height: 4px;
        background: var(--dark-gray);
    }

    .sp-size-card.size-160 .sp-size-pile-shaft { height: 80px; }
    .sp-size-card.size-160 .sp-size-pile-helix { width: 32px; }

    .sp-size-card.size-200 .sp-size-pile-shaft { height: 110px; }
    .sp-size-card.size-200 .sp-size-pile-helix { width: 40px; }

    .sp-size-card.size-250 .sp-size-pile-shaft { height: 140px; }
    .sp-size-card.size-250 .sp-size-pile-helix { width: 50px; }

    .sp-size-card.size-400 .sp-size-pile-shaft { height: 180px; }
    .sp-size-card.size-400 .sp-size-pile-helix { width: 64px; }

    .sp-size-diameter {
        font-size: 28px;
        font-weight: 800;
        color: var(--black);
        line-height: 1;
        margin-bottom: 4px;
    }

    .sp-size-series {
        font-size: 12px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: var(--mid-gray);
        margin-bottom: 12px;
    }

    .sp-size-install {
        display: inline-block;
        padding: 4px 12px;
        background: var(--bg-gray);
        border-radius: 4px;
        font-size: 12px;
        font-weight: 600;
        color: var(--mid-gray);
        margin-bottom: 12px;
    }

    .sp-size-use {
        font-size: 14px;
        color: var(--dark-gray);
        line-height: 1.5;
        margin-bottom: 10px;
    }

    .sp-size-load {
        font-size: 15px;
        font-weight: 700;
        color: var(--red);
    }

    /* EQUIPMENT SECTION */
    .sp-equipment {
        padding: 56px 0;
        background: var(--white);
    }

    .sp-equipment-header {
        margin-bottom: 56px;
    }

    .sp-equipment-header h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--black);
        line-height: 1.2;
        margin-bottom: 16px;
    }

    .sp-equipment-header p {
        font-size: 16px;
        color: var(--dark-gray);
        line-height: 1.7;
        max-width: 640px;
    }

    .sp-equipment-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
        margin-bottom: 40px;
    }

    .sp-equipment-card {
        background: var(--bg-gray);
        border-radius: 12px;
        overflow: hidden;
        border: 1px solid rgba(0,0,0,0.08);
        box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        transition: box-shadow 0.3s, border-color 0.3s;
    }

    .sp-equipment-card:hover {
        border-color: rgba(0,0,0,0.12);
        box-shadow: 0 8px 32px rgba(0,0,0,0.08);
    }

    .sp-equipment-card-image {
        height: 200px;
        background: var(--white);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        color: var(--mid-gray);
        border-bottom: 1px solid var(--light-gray);
    }

    .sp-equipment-card-body {
        padding: 24px;
    }

    .sp-equipment-card-body h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--black);
        margin-bottom: 8px;
    }

    .sp-equipment-card-body p {
        font-size: 14px;
        color: var(--dark-gray);
        line-height: 1.6;
        margin-bottom: 12px;
    }

    .sp-equipment-spec {
        font-size: 13px;
        font-weight: 700;
        color: var(--red);
    }

    /* PURCHASE vs RENTAL */
    .sp-purchase-rental {
        padding: 56px 0;
        background: var(--bg-gray);
    }

    .sp-purchase-rental-header {
        text-align: center;
        margin-bottom: 48px;
    }

    .sp-purchase-rental-header h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--black);
        margin-bottom: 12px;
    }

    .sp-purchase-rental-header p {
        font-size: 16px;
        color: var(--mid-gray);
        max-width: 540px;
        margin: 0 auto;
    }

    .sp-pr-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }

    .sp-pr-card {
        background: white;
        border-radius: 12px;
        padding: 40px 36px;
        border: 1px solid var(--light-gray);
        transition: box-shadow 0.3s;
    }

    .sp-pr-card:hover {
        box-shadow: 0 8px 32px rgba(0,0,0,0.06);
    }

    .sp-pr-card h3 {
        font-size: 22px;
        font-weight: 800;
        color: var(--black);
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .sp-pr-card h3 svg {
        width: 28px;
        height: 28px;
        stroke: var(--red);
        fill: none;
        stroke-width: 2;
    }

    .sp-pr-card p {
        font-size: 15px;
        color: var(--dark-gray);
        line-height: 1.7;
        margin-bottom: 20px;
    }

    .sp-pr-card ul {
        list-style: none;
    }

    .sp-pr-card li {
        font-size: 14px;
        color: var(--dark-gray);
        padding: 7px 0;
        padding-left: 22px;
        position: relative;
        border-bottom: 1px solid #f0f0f0;
    }

    .sp-pr-card li:last-child {
        border-bottom: none;
    }

    .sp-pr-card li::before {
        content: '\2713';
        position: absolute;
        left: 0;
        color: var(--red);
        font-weight: 700;
    }

    /* ANNOTATION (design notes) */
    .annotation {
        background: #fffde7;
        border: 2px dashed #f9a825;
        border-radius: 8px;
        padding: 14px 18px;
        margin: 8px 0;
        font-size: 13px;
        color: #795548;
        font-style: italic;
    }

    /* RESPONSIVE */
    @media (max-width: 1024px) {
        .sp-hero h1 { font-size: 38px; }
        .sp-advantages-grid { grid-template-columns: repeat(2, 1fr); }
        .sp-series-intro { grid-template-columns: 1fr; }
        .sp-why-grid { grid-template-columns: 1fr; }
        .sp-sizes-visual { grid-template-columns: repeat(2, 1fr); }
        .sp-equipment-grid { grid-template-columns: 1fr; }
        .sp-pr-grid { grid-template-columns: 1fr; }
        .sp-install-info { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
        .sp-hero { min-height: 340px; }
        .sp-hero-content { padding: 68px 24px 36px; }
        .sp-hero h1 { font-size: 30px; }
        .sp-tab-bar-inner { overflow-x: auto; -webkit-overflow-scrolling: touch; }
        .sp-tab-link { padding: 14px 20px; font-size: 14px; }
        .sp-advantages-grid { grid-template-columns: 1fr; }
        .sp-applications-list { columns: 1; }
        .sp-sizes-visual { grid-template-columns: repeat(2, 1fr); }
        .sp-download-links { flex-direction: column; align-items: center; }
        .sp-subtabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
        .sp-subtab { padding: 12px 20px; font-size: 13px; }
        .sp-install-step { grid-template-columns: 1fr; gap: 16px; }
        .sp-install-step:nth-child(even) .sp-install-step-img { order: 0; }
        .sp-install-tools ul { grid-template-columns: 1fr; }
    }

    @media (max-width: 480px) {
        .sp-sizes-visual { grid-template-columns: 1fr 1fr; gap: 12px; }
        .sp-size-card { padding: 20px 14px; }
    }