:root {
    --ink: #0e1316;
    --ciano: #00baff;
    --red: #e10600;
    --line: #e1e6e7;
    --wash: #f2f5f6;
    --text: #3a3f44;
    --muted: #6b7378;
}

* {
    box-sizing: border-box;
}

html {
    background: #c8cfd1;
}

body {
    margin: 0 auto;
    max-width: 1180px;
    background: #fff;
    color: var(--text);
    font-family: "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
}

a img {
    border: 0;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 6px 40px;
    flex-wrap: wrap;
    background: var(--ink);
}

.logo-link {
    flex-shrink: 0;
}

.logo-link img {
    display: block;
    width: 160px;
    height: 100px;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 4px;
}

.nav a {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #aeb9bd;
    text-decoration: none;
    padding: 12px 14px;
}

.nav a:hover {
    color: #fff;
}

.nav a.current {
    color: #fff;
    box-shadow: inset 0 -3px 0 var(--ciano);
}

.rule {
    height: 4px;
    margin: 0;
    background: var(--ciano);
    border: 0;
}

.subnav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0 6px;
    padding: 0 40px;
    background: var(--ink);
}

.subnav a {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #aeb9bd;
    text-decoration: none;
    padding: 14px 16px;
}

.subnav a:hover {
    color: #fff;
}

.subnav a.current {
    color: #fff;
    box-shadow: inset 0 -3px 0 var(--ciano);
}

.hero {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 40px;
    align-items: center;
    padding: 56px 40px 60px;
    background: var(--ink);
}

.hero h1 {
    margin: 0;
    font-size: clamp(32px, 4.6vw, 52px);
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: #fff;
}

.hero h1::after {
    content: "";
    display: block;
    width: 72px;
    height: 4px;
    margin: 24px 0 0;
    background: var(--ciano);
}

.hero p {
    margin: 24px 0 0;
    max-width: 400px;
    font-size: 18px;
    color: #9fadb2;
}

.hero .brand {
    margin: 0;
}

.hero .model {
    color: #fff;
}

.hero .lead {
    margin-top: 22px;
    font-size: 19px;
    color: #b7c4c9;
}

.hero .range {
    display: inline-block;
    margin-top: 26px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    color: #fff;
}

.hero-media img {
    display: block;
    width: 100%;
}

.content {
    padding: 52px 40px 60px;
}

.content.wash {
    background: var(--wash);
    border-bottom: 1px solid var(--line);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    text-decoration: none;
    color: inherit;
    background: #fff;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: inset 0 3px 0 var(--ciano), 0 14px 30px rgba(14, 19, 22, 0.14);
}

.product-card img {
    display: block;
    width: 100%;
    aspect-ratio: 3 / 2;
    object-fit: contain;
    margin: 0;
    padding: 12px;
    background: #fff;
    border-bottom: 1px solid var(--line);
}

.product-card .brand {
    padding: 20px 22px 0;
}

.product-card p {
    margin: 12px 0 20px;
    padding: 0 22px;
    font-size: 15px;
    color: #4a5156;
    flex: 1;
}

.product-card .range {
    margin: 0 22px 20px;
    padding-top: 14px;
    border-top: 1px solid var(--line);
}

.range {
    display: block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #111;
}

.brand {
    display: block;
    font-family: Consolas, "Courier New", monospace;
    font-size: 25px;
    font-weight: 600;
    white-space: nowrap;
}

.brand-lg {
    font-size: clamp(30px, 4vw, 42px);
}

.spe,
.or {
    color: var(--ciano);
}

.x {
    color: var(--red);
}

.model {
    color: #111;
}

.version {
    display: block;
    margin-top: 4px;
    font-size: 16px;
    color: #111;
}

.product-hero {
    text-align: left;
}

.product-copy {
    max-width: 720px;
    margin: 0 auto;
    text-align: left;
    font-size: 17px;
}

.product-copy p:first-child {
    margin-top: 0;
}

.note {
    color: #c40000;
    font-weight: 700;
}

.gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 28px;
    text-align: center;
}

.gallery img {
    width: min(700px, 100%);
    background: var(--wash);
}

.howto {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: start;
}

.howto h2 {
    margin: 32px 0 14px;
    font-size: 15px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #111;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--ciano);
}

.howto h2:first-child {
    margin-top: 0;
}

.howto ol {
    margin: 0 0 22px;
    padding-left: 22px;
}

.howto li {
    margin: 0 0 10px;
}

.warn {
    padding: 14px 16px;
    background: #fff5f5;
    border-left: 4px solid var(--red);
}

.howto-photos {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.howto-photos img {
    width: 100%;
    padding: 16px;
    background: var(--wash);
    border: 1px solid var(--line);
}

.specs {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 26px;
    border: 1px solid var(--line);
}

.specs th,
.specs td {
    padding: 13px 16px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
}

.specs tr:last-child th,
.specs tr:last-child td {
    border-bottom: 0;
}

.specs th {
    width: 42%;
    font-weight: 700;
    color: #111;
    background: var(--wash);
}

.specs td {
    color: var(--text);
}

.faq {
    max-width: 820px;
    margin: 0 auto;
}

.faq details {
    border-bottom: 1px solid var(--line);
}

.faq summary {
    cursor: pointer;
    font-size: 17px;
    font-weight: 700;
    padding: 18px 2px;
    color: #111;
}

.faq summary:hover {
    color: #0090c8;
}

.faq details p {
    margin: 0 2px 20px;
    color: #4a5156;
}

.contact-box {
    text-align: center;
    padding: 8px 0;
}

.contact-box p {
    margin: 18px 0 0;
}

.mail-form {
    max-width: 460px;
    margin: 0 auto;
    padding: 32px;
    text-align: left;
    background: var(--wash);
    border: 1px solid var(--line);
}

.mail-form label {
    display: block;
    margin: 16px 0 6px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #111;
}

.mail-form input,
.mail-form textarea {
    width: 100%;
    padding: 12px;
    background: #fff;
    border: 1px solid #d3dadc;
    font-family: inherit;
    font-size: 16px;
}

.mail-form input:focus,
.mail-form textarea:focus {
    outline: 0;
    border-color: var(--ciano);
    box-shadow: 0 0 0 3px rgba(0, 186, 255, 0.2);
}

.mail-form textarea {
    min-height: 150px;
    resize: vertical;
}

.mail-form button {
    width: 100%;
    margin-top: 22px;
    padding: 14px 24px;
    border: 0;
    background: var(--ciano);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
}

.mail-form button:hover:not(:disabled) {
    background: #0090c8;
}

.mail-form button:disabled {
    background: #c2cacd;
    color: #eef1f2;
    cursor: not-allowed;
}

.honey {
    display: none;
}

.mail {
    color: #0090c8;
    text-decoration: none;
}

.mail:hover {
    text-decoration: underline;
}

.site-footer {
    text-align: center;
    padding: 34px 40px;
    background: var(--ink);
}

.site-footer p {
    margin: 0;
}

.site-footer .mail {
    display: inline-block;
    padding: 13px 30px;
    background: var(--ciano);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-footer .mail:hover {
    background: #fff;
    color: var(--ink);
    text-decoration: none;
}

.whatsapp {
    width: 180px;
    height: auto;
    border: 3px solid darkseagreen;
    border-radius: 15px;
}

@media (max-width: 860px) {
    .site-header,
    .subnav,
    .hero,
    .content,
    .site-footer {
        padding-left: 18px;
        padding-right: 18px;
    }

    .site-header {
        position: static;
    }

    .nav {
        justify-content: center;
        width: 100%;
    }

    .hero {
        padding-top: 44px;
        padding-bottom: 44px;
        text-align: center;
    }

    .hero h1::after {
        margin-left: auto;
        margin-right: auto;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
    }

    .content {
        padding-top: 34px;
    }

    .hero,
    .product-grid,
    .howto,
    .gallery {
        grid-template-columns: 1fr;
    }
}