:root {
        --eco-bg: #f4f7fb;
        --eco-surface: #ffffff;
        --eco-ink: #0f172a;
        --eco-muted: #64748b;
        --eco-border: #dbe5ef;
        --eco-blue: #0d6efd;
        --eco-green: #16a34a;
        --eco-yellow: #ffd100;
        --eco-red: #e30613;
        --eco-navy: #07142b;
        --eco-shadow: 0 18px 46px rgba(15, 23, 42, 0.08);
    }

    .eco-page {
        background:
            radial-gradient(circle at 8% 0%, rgba(13,110,253,.10), transparent 26%),
            radial-gradient(circle at 92% 3%, rgba(255,209,0,.12), transparent 24%),
            linear-gradient(180deg, #f8fbff 0%, var(--eco-bg) 52%, #edf3f8 100%);
        color: var(--eco-ink);
        font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
        padding: 42px 18px 70px;
    }

    .eco-shell {
        width: min(1220px, 100%);
        margin: 0 auto;
    }

    .eco-hero {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
        gap: 28px;
        align-items: center;
        padding: 34px;
        border: 1px solid rgba(13,110,253,.16);
        border-radius: 28px;
        background: linear-gradient(135deg, #ffffff 0%, #f8fbff 58%, #eef6ff 100%);
        box-shadow: var(--eco-shadow);
        position: relative;
        overflow: hidden;
    }

    .eco-hero:before {
        content: "";
        position: absolute;
        inset: 0 0 auto 0;
        height: 5px;
        background: linear-gradient(90deg, var(--eco-blue) 0%, var(--eco-yellow) 55%, var(--eco-red) 100%);
    }

    .eco-kicker {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 14px;
        padding: 7px 11px;
        border-radius: 999px;
        color: var(--eco-blue);
        background: #eff6ff;
        font-size: 13px;
        font-weight: 900;
    }

    .eco-kicker i,
    .eco-btn i,
    .eco-mini-btn i {
        width: 1.1em;
        height: 1.1em;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
        line-height: 1;
    }

    .eco-hero h1 {
        margin: 0;
        font-size: clamp(34px, 5vw, 58px);
        line-height: 1.02;
        letter-spacing: 0;
        font-weight: 950;
    }

    .eco-hero p {
        max-width: 780px;
        margin: 16px 0 0;
        color: var(--eco-muted);
        font-size: 17px;
        line-height: 1.7;
        font-weight: 650;
    }

    .eco-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 24px;
    }

    .eco-btn {
        min-height: 46px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 9px;
        padding: 12px 17px;
        border-radius: 14px;
        border: 1px solid #c7ddff;
        color: var(--eco-blue);
        background: #ffffff;
        text-decoration: none;
        font-weight: 900;
        line-height: 1.15;
    }

    .eco-btn.primary {
        color: #ffffff;
        border-color: transparent;
        background: linear-gradient(135deg, var(--eco-blue), #075bb8);
        box-shadow: 0 14px 30px rgba(13,110,253,.22);
    }

    .eco-device-panel {
        padding: 18px;
        border-radius: 24px;
        background: #0b1020;
        color: #ffffff;
        box-shadow: 0 18px 46px rgba(8, 13, 28, .22);
    }

    .eco-device-panel h2 {
        margin: 0 0 16px;
        color: #ffffff;
        font-size: 20px;
        font-weight: 950;
        letter-spacing: 0;
    }

    .eco-device-list {
        display: grid;
        gap: 12px;
    }

    .eco-device-link {
        display: grid;
        grid-template-columns: 58px minmax(0, 1fr);
        gap: 13px;
        align-items: center;
        padding: 15px;
        border: 1px solid rgba(255,255,255,.10);
        border-radius: 18px;
        background: rgba(255,255,255,.045);
        color: #ffffff;
        text-decoration: none;
        transition: transform .18s ease, border-color .18s ease, background .18s ease;
    }

    .eco-device-link:hover,
    .eco-device-link.is-active {
        transform: translateY(-2px);
        border-color: rgba(13,110,253,.65);
        background: linear-gradient(135deg, rgba(13,110,253,.28), rgba(255,255,255,.06));
    }

    .eco-device-icon {
        width: 54px;
        height: 54px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 16px;
        background: rgba(255,255,255,.10);
        color: #ffffff;
        font-size: 24px;
    }

    .eco-device-icon i {
        display: block;
        line-height: 1;
    }

    .eco-device-link strong {
        display: block;
        color: #ffffff;
        font-size: 18px;
        font-weight: 950;
        line-height: 1.12;
    }

    .eco-device-link > span:not(.eco-device-icon) {
        display: block;
        min-width: 0;
        margin-top: 0;
    }

    .eco-device-link > span:not(.eco-device-icon) > span {
        display: block;
        margin-top: 5px;
        color: #a8b3c7;
        font-size: 14px;
        font-weight: 700;
    }

    .eco-section {
        margin-top: 30px;
        padding: 28px;
        border: 1px solid var(--eco-border);
        border-radius: 26px;
        background: rgba(255,255,255,.92);
        box-shadow: 0 14px 34px rgba(15,23,42,.06);
    }

    .eco-section.plain {
        background: transparent;
        border: 0;
        padding: 0;
        box-shadow: none;
    }

    .eco-section-head {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 18px;
        margin-bottom: 18px;
    }

    .eco-section h2 {
        margin: 0;
        color: var(--eco-navy);
        font-size: clamp(25px, 3vw, 36px);
        line-height: 1.08;
        font-weight: 950;
        letter-spacing: 0;
    }

    .eco-section-lead {
        max-width: 820px;
        margin: 8px 0 0;
        color: var(--eco-muted);
        font-size: 16px;
        line-height: 1.68;
        font-weight: 650;
    }

    .eco-grid {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 16px;
    }

    .eco-grid.two {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .eco-card,
    .eco-app-card,
    .eco-step {
        min-width: 0;
        border: 1px solid var(--eco-border);
        border-radius: 20px;
        background: #ffffff;
        box-shadow: 0 10px 26px rgba(15,23,42,.05);
    }

    .eco-card {
        padding: 20px;
    }

    .eco-card-icon,
    .eco-app-icon {
        width: 58px;
        height: 58px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 17px;
        background: #eff6ff;
        color: var(--eco-blue);
        font-size: 24px;
        overflow: hidden;
    }

    .eco-card h3,
    .eco-app-card h3,
    .eco-step h3 {
        margin: 14px 0 8px;
        color: var(--eco-ink);
        font-size: 20px;
        line-height: 1.15;
        font-weight: 950;
        letter-spacing: 0;
    }

    .eco-card p,
    .eco-app-card p,
    .eco-step p,
    .eco-card li {
        color: #475569;
        line-height: 1.62;
        font-weight: 650;
    }

    .eco-app-card {
        padding: 18px;
        display: flex;
        flex-direction: column;
        gap: 13px;
    }

    .eco-app-top {
        display: grid;
        grid-template-columns: 64px minmax(0, 1fr);
        gap: 13px;
        align-items: center;
    }

    .eco-app-icon img {
        width: 52px;
        height: 52px;
        object-fit: contain;
        border-radius: 14px;
    }

    .eco-app-tag {
        display: inline-flex;
        width: fit-content;
        padding: 5px 9px;
        border-radius: 999px;
        color: #166534;
        background: #dcfce7;
        font-size: 12px;
        font-weight: 900;
    }

    .eco-app-card h3 {
        margin: 6px 0 0;
    }

    .eco-app-meta {
        color: var(--eco-muted);
        font-size: 13px;
        font-weight: 800;
    }

    .eco-app-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: auto;
    }

    .eco-mini-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 40px;
        padding: 10px 13px;
        border-radius: 12px;
        color: var(--eco-blue);
        background: #eff6ff;
        text-decoration: none;
        font-weight: 900;
        border: 1px solid #bfdbfe;
    }

    .eco-tutorial {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 14px;
        counter-reset: eco-steps;
    }

    .eco-step {
        padding: 18px;
        position: relative;
    }

    .eco-step:before {
        counter-increment: eco-steps;
        content: counter(eco-steps);
        width: 34px;
        height: 34px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        color: #ffffff;
        background: var(--eco-blue);
        font-weight: 950;
    }

    .eco-note {
        margin-top: 18px;
        padding: 15px 16px;
        border: 1px dashed #bfdbfe;
        border-radius: 18px;
        background: #f8fbff;
        color: #475569;
        line-height: 1.6;
        font-weight: 700;
    }

    .eco-device-hero-list {
        list-style: none;
        margin: 20px 0 0;
        padding: 0;
        display: grid;
        gap: 10px;
    }

    .eco-device-hero-list li {
        display: flex;
        gap: 10px;
        align-items: flex-start;
        color: #475569;
        font-weight: 750;
        line-height: 1.5;
    }

    .eco-device-hero-list i {
        width: 20px;
        height: 20px;
        margin-top: 1px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 20px;
        border-radius: 999px;
        background: #dcfce7;
        color: var(--eco-green);
        font-size: 12px;
        line-height: 1;
    }

    @media (max-width: 980px) {
        .eco-hero,
        .eco-grid,
        .eco-grid.two,
        .eco-tutorial {
            grid-template-columns: 1fr;
        }

        .eco-section-head {
            display: block;
        }
    }

    @media (max-width: 620px) {
        .eco-page {
            padding: 24px 10px 52px;
        }

        .eco-hero,
        .eco-section {
            padding: 20px;
            border-radius: 22px;
        }

        .eco-actions,
        .eco-app-actions {
            display: grid;
            grid-template-columns: 1fr;
        }

        .eco-btn,
        .eco-mini-btn {
            width: 100%;
        }

        .eco-device-link {
            grid-template-columns: 50px minmax(0, 1fr);
            padding: 13px;
        }

        .eco-device-icon {
            width: 48px;
            height: 48px;
        }
    }