:root {
    --bg: #eff4f8;
    --surface: #ffffff;
    --ink: #10293b;
    --muted: #496273;
    --accent: #0f9d8f;
    --line: #d4e0e8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Manrope", "Trebuchet MS", sans-serif;
    color: var(--ink);
    background: radial-gradient(circle at 8% 0%, #ffffff 0%, #edf3f8 45%, #e3ecf3 100%);
}

.wrap {
    width: min(1080px, 92vw);
    margin: 0 auto;
    padding: 1.6rem 0 2.5rem;
}

.back-link {
    display: inline-block;
    color: #145e78;
    text-decoration: none;
    margin-bottom: 1rem;
    font-weight: 700;
}

.product-hero {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 1.15rem;
    align-items: stretch;
}

.product-media,
.hero-copy,
.description {
    background: color-mix(in srgb, var(--surface), #ffffff 78%);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: 0 14px 36px rgba(15, 39, 56, 0.08);
}

.product-media {
    width: 100%;
    max-width: 520px;
    justify-self: start;
    padding: 0.7rem;
}

.hero-image {
    display: block;
    width: 100%;
    height: clamp(220px, 30vw, 320px);
    object-fit: contain;
    background: #ffffff;
    border-radius: 12px;
    padding: 0;
}

.thumb-strip {
    margin-top: 0.75rem;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.45rem;
}

.thumb-item {
    border: 2px solid #d5e3ec;
    border-radius: 10px;
    padding: 0;
    background: #edf3f8;
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.thumb-item:hover {
    border-color: #91acbe;
    transform: translateY(-1px);
}

.thumb-item.is-active {
    border-color: #0f9d8f;
}

.thumb-image {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    background: #ffffff;
    border-radius: 8px;
}

.hero-copy {
    padding: 1.4rem;
}

.eyebrow {
    margin: 0;
    color: var(--accent);
    font-size: 0.84rem;
    letter-spacing: 0.08em;
    font-weight: 700;
    text-transform: uppercase;
}

h1,
h2,
strong {
    font-family: "Space Grotesk", "Verdana", sans-serif;
}

h1 {
    margin: 0.6rem 0 0.7rem;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    line-height: 1.12;
}

.lead {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
    margin-top: 1rem;
}

.spec {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f8fbfd;
    padding: 0.65rem 0.75rem;
}

.spec strong,
.spec span {
    display: block;
}

.spec strong {
    font-size: 0.9rem;
}

.spec span {
    font-size: 0.95rem;
    color: var(--muted);
}

.cta {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.72rem 1.05rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    color: #f6fffd;
    background: linear-gradient(135deg, #0f9d8f, #0a7c89);
}

.description {
    margin-top: 1rem;
    padding: 1.2rem;
}

.bullet-sections {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

.bullet-card {
    background: color-mix(in srgb, var(--surface), #ffffff 78%);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: 0 14px 36px rgba(15, 39, 56, 0.08);
    padding: 1rem 1.15rem;
}

.bullet-card h2 {
    margin: 0 0 0.55rem;
    font-size: 1.2rem;
}

.bullet-card ul {
    margin: 0;
    padding-left: 1.15rem;
    color: var(--muted);
    line-height: 1.65;
}

.technical-table-section {
    margin-top: 1rem;
    background: color-mix(in srgb, var(--surface), #ffffff 78%);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: 0 14px 36px rgba(15, 39, 56, 0.08);
    padding: 1rem 1.15rem;
}

.technical-table-section h2 {
    margin: 0 0 0.8rem;
}

.table-wrap {
    overflow-x: auto;
}

.technical-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 520px;
}

.technical-table th,
.technical-table td {
    border: 1px solid #d8e4ec;
    padding: 0.62rem 0.72rem;
    text-align: left;
    vertical-align: top;
}

.technical-table th {
    width: 34%;
    background: #f0f6fb;
    font-family: "Space Grotesk", "Verdana", sans-serif;
    font-weight: 600;
}

.technical-table td {
    color: var(--muted);
}

.description h2 {
    margin: 0 0 0.65rem;
}

.description p {
    margin: 0;
    color: var(--muted);
    line-height: 1.75;
}

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

    .product-media {
        max-width: 100%;
    }

    .spec-grid {
        grid-template-columns: 1fr;
    }

    .thumb-strip {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .bullet-sections {
        grid-template-columns: 1fr;
    }
}