:root {
    --red: #df171f;
    --red-dark: #a90f16;
    --black: #101010;
    --panel: #181818;
    --ink: #232323;
    --muted: #6c737d;
    --line: #e4e6ea;
    --light: #f5f6f8;
    --white: #ffffff;
    --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--white);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.55;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(12, 12, 12, 0.98);
    border-bottom: 3px solid var(--red);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 22px;
    max-width: 1360px;
    min-height: 78px;
    margin: 0 auto;
    padding: 12px clamp(18px, 3vw, 42px);
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    flex: 0 0 auto;
}
.brand-logo {
    width: 76px;
    height: 42px;
    object-fit: contain;
    flex: 0 0 auto;
}
.brand strong { display: block; font-size: 21px; line-height: 1.1; }
.brand small { display: block; color: #c8cbd0; font-size: 12px; white-space: nowrap; }

.main-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-left: auto;
    color: var(--white);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
}
.main-nav a { color: #f4f4f4; }
.main-nav a { white-space: nowrap; }
.main-nav a:hover { color: var(--red); }
.main-nav a.active { color: var(--red); }

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 6px;
    white-space: nowrap;
}
.whatsapp-link {
    color: #e5e7eb;
    font-size: 13px;
    font-weight: 700;
}
.quote-btn {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 16px;
    color: var(--white);
    background: var(--red);
    font-weight: 900;
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255,255,255,.25);
    background: transparent;
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 5px auto;
    background: var(--white);
}

.hero {
    position: relative;
    overflow: hidden;
    color: var(--white);
    background: #0e0e0e;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(100deg, rgba(10,10,10,.98) 0%, rgba(10,10,10,.92) 44%, rgba(10,10,10,.25) 100%),
        repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0, rgba(255,255,255,.04) 1px, transparent 1px, transparent 18px);
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(420px, 48%);
    align-items: center;
    max-width: 1360px;
    min-height: 690px;
    margin: 0 auto;
    padding: clamp(58px, 7vw, 96px) clamp(18px, 4vw, 48px);
    gap: 34px;
}
.hero-copy { max-width: 760px; }
.eyebrow {
    margin: 0 0 12px;
    color: var(--red);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
    margin-bottom: 18px;
    font-size: clamp(42px, 5.6vw, 70px);
    line-height: 1.02;
    letter-spacing: 0;
}
h2 {
    margin-bottom: 12px;
    color: var(--black);
    font-size: clamp(28px, 3.4vw, 44px);
    line-height: 1.12;
    letter-spacing: 0;
}
h3 { margin-bottom: 8px; color: var(--black); font-size: 20px; }
.hero-subtitle {
    margin-bottom: 10px;
    color: #f1f3f5;
    font-size: clamp(20px, 2.3vw, 28px);
    font-weight: 700;
}
.hero-text {
    max-width: 560px;
    color: #c9ced6;
    font-size: 18px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 30px 0;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 18px;
    border: 2px solid transparent;
    font-weight: 900;
    transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: var(--white); background: var(--red); border-color: var(--red); }
.btn-primary:hover { background: var(--red-dark); border-color: var(--red-dark); }
.btn-outline { color: var(--white); border-color: rgba(255,255,255,.65); }
.btn-light { color: var(--black); background: var(--white); border-color: var(--white); }
.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    max-width: 660px;
}
.hero-metrics span {
    padding: 12px;
    background: rgba(255,255,255,.08);
    border-left: 4px solid var(--red);
    color: #d9dde4;
    font-size: 13px;
}
.hero-metrics strong { display: block; color: var(--white); font-size: 18px; }
.hero-product { align-self: stretch; display: flex; align-items: center; }
.hero-image-card {
    width: 100%;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.14);
    box-shadow: 0 28px 80px rgba(0,0,0,.42);
}
.hero-image-card img {
    width: 100%;
    height: 520px;
    object-fit: contain;
    padding: 34px;
    background: radial-gradient(circle at 50% 45%, #2c2c2c 0, #111 58%, #080808 100%);
}

.section { padding: clamp(60px, 7vw, 98px) clamp(18px, 4vw, 48px); }
.section-title {
    max-width: var(--max);
    margin: 0 auto 34px;
}
.section-title > p:not(.eyebrow) { max-width: 700px; color: var(--muted); }
.section-title.dark h2 { color: var(--white); }

.product-grid,
.model-grid,
.why-grid,
.oem-grid,
.certificate-grid {
    display: grid;
    max-width: var(--max);
    margin: 0 auto;
    gap: 20px;
}
.product-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.product-card,
.model-card,
.oem-grid article,
.certificate-grid article {
    background: var(--white);
    border: 1px solid var(--line);
}
.product-card-link {
    display: block;
    color: inherit;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.product-card-link:hover {
    transform: translateY(-2px);
    border-color: rgba(223, 23, 31, .45);
    box-shadow: 0 18px 38px rgba(0,0,0,.10);
}
.product-card img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background: var(--light);
}
.card-body { padding: 20px; }
.card-body p { min-height: 78px; color: var(--muted); }
.card-body a,
.model-card a {
    color: var(--red);
    font-weight: 900;
    text-transform: uppercase;
    font-size: 13px;
}

.category-nav-section {
    padding-top: clamp(42px, 5vw, 66px);
    padding-bottom: clamp(42px, 5vw, 66px);
}
.category-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    max-width: var(--max);
    margin: 0 auto;
    gap: 14px;
}
.category-nav-card {
    display: grid;
    grid-template-columns: 74px minmax(0, 1fr);
    align-items: center;
    min-height: 144px;
    padding: 14px;
    color: inherit;
    background: var(--white);
    border: 1px solid var(--line);
    border-left: 5px solid var(--red);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.category-nav-card:hover {
    transform: translateY(-2px);
    border-color: rgba(223, 23, 31, .45);
    box-shadow: 0 14px 28px rgba(0,0,0,.10);
}
.category-nav-card img {
    width: 64px;
    height: 64px;
    object-fit: contain;
}
.category-nav-card h3 {
    margin-bottom: 5px;
    font-size: 16px;
    line-height: 1.15;
}
.category-nav-card p {
    margin-bottom: 10px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.35;
}
.category-nav-card span {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 5px 10px;
    color: var(--white);
    background: var(--black);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}
.category-nav-card:hover span {
    background: var(--red);
}

.best-sellers,
.certificates { background: var(--light); }
.model-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.model-card { padding-bottom: 20px; }
.model-card img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background: #eef0f4;
}
.model-card h3,
.model-card ul,
.model-card a { margin-left: 18px; margin-right: 18px; }
.model-card h3 { margin-top: 18px; font-size: 26px; }
.model-card ul {
    min-height: 92px;
    padding-left: 18px;
    color: var(--muted);
}

.why {
    background: var(--black);
}
.why-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.why-grid article {
    min-height: 210px;
    padding: 24px;
    background: var(--panel);
    border: 1px solid #333;
}
.why-grid span {
    display: inline-block;
    margin-bottom: 20px;
    color: var(--red);
    font-size: 30px;
    font-weight: 900;
}
.why-grid h3 { color: var(--white); }
.why-grid p { color: #c9cdd4; }

.oem-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.oem-grid article {
    min-height: 150px;
    padding: 22px;
    border-top: 4px solid var(--red);
}
.oem-grid p { color: var(--muted); }

.certificate-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.certificate-grid article {
    padding: 22px;
    text-align: center;
}
.certificate-grid img {
    width: 100%;
    max-width: 260px;
    height: 180px;
    margin: 0 auto 18px;
    border: 1px solid var(--line);
    background: var(--white);
    object-fit: contain;
}

.contact {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(420px, .85fr);
    gap: 38px;
    color: var(--white);
    background: var(--black);
}
.contact h2 { color: var(--white); }
.contact-panel,
.inquiry-form {
    width: 100%;
    max-width: 620px;
}
.contact-panel { justify-self: end; }
dl { margin: 28px 0 0; }
dt { color: var(--red); font-weight: 900; }
dd { margin: 0 0 18px; color: #e5e7eb; }
.inquiry-form {
    display: grid;
    gap: 14px;
    padding: 26px;
    color: var(--black);
    background: var(--white);
}
.inquiry-form label {
    display: grid;
    gap: 7px;
    color: #343a40;
    font-weight: 900;
}
.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd1d8;
    color: var(--black);
    font: inherit;
}
.inquiry-form textarea { resize: vertical; }

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 26px clamp(18px, 4vw, 48px);
    color: #d8dbe0;
    background: #070707;
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--white); font-weight: 900; }
.site-footer div {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.floating-whatsapp {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 60;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    color: var(--white);
    background: #128c43;
    border-left: 5px solid var(--red);
    box-shadow: 0 14px 34px rgba(0,0,0,.28);
    font-weight: 900;
}
.floating-whatsapp:hover {
    background: #0f7a39;
}

.inner-hero {
    position: relative;
    overflow: hidden;
    min-height: 430px;
    padding: clamp(70px, 8vw, 120px) clamp(18px, 4vw, 48px);
    color: var(--white);
    background:
        linear-gradient(100deg, rgba(10,10,10,.97), rgba(10,10,10,.78)),
        url("../images2026/open-frame-generator.jpg") center right / contain no-repeat,
        #101010;
    border-bottom: 4px solid var(--red);
}
.inner-hero > div {
    max-width: var(--max);
    margin: 0 auto;
}
.inner-hero h1 {
    max-width: 780px;
    margin-bottom: 16px;
    font-size: clamp(38px, 5vw, 64px);
}
.inner-hero p:not(.eyebrow) {
    max-width: 620px;
    color: #d7dbe2;
    font-size: 18px;
}
.oem-hero {
    background:
        linear-gradient(100deg, rgba(10,10,10,.97), rgba(10,10,10,.78)),
        url("../images2026/silent-inverter-generator.jpg") center right / contain no-repeat,
        #101010;
}
.cert-hero,
.download-hero,
.contact-hero {
    background:
        linear-gradient(100deg, rgba(10,10,10,.97), rgba(10,10,10,.78)),
        repeating-linear-gradient(135deg, rgba(255,255,255,.045) 0, rgba(255,255,255,.045) 1px, transparent 1px, transparent 18px),
        #101010;
}

.cta-band {
    color: var(--white);
    background: var(--black);
    text-align: center;
}
.cta-band h2 {
    color: var(--white);
}
.cta-band p {
    max-width: 760px;
    margin: 0 auto 26px;
    color: #d7dbe2;
}
.cta-band .hero-actions {
    justify-content: center;
}

.detail-layout {
    display: grid;
    grid-template-columns: minmax(360px, .95fr) minmax(0, 1fr);
    max-width: var(--max);
    margin: 0 auto;
    gap: 38px;
    align-items: start;
}
.gallery,
.detail-summary {
    min-width: 0;
}
.main-product-image {
    display: grid;
    min-height: 420px;
    place-items: center;
    padding: 28px;
    background: radial-gradient(circle at 50% 45%, #2c2c2c 0, #111 58%, #080808 100%);
    border: 1px solid var(--line);
}
.main-product-image img {
    max-height: 360px;
    object-fit: contain;
}
.thumb-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 12px;
}
.thumb-row img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    padding: 12px;
    background: var(--light);
    border: 1px solid var(--line);
}
.detail-summary h1 {
    color: var(--black);
    font-size: clamp(34px, 4vw, 54px);
}
.detail-summary > p:not(.eyebrow) {
    color: var(--muted);
}
.spec-chips {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 24px 0;
}
.spec-chips span {
    display: grid;
    gap: 4px;
    padding: 14px;
    background: var(--light);
    border-left: 4px solid var(--red);
    color: var(--black);
}
.spec-chips strong {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}
.dark-outline {
    color: var(--black);
    border-color: var(--black);
}
.btn-dark-line {
    color: var(--black);
    border-color: var(--line);
    background: var(--white);
}
.feature-section {
    background: var(--light);
}
.feature-grid,
.process-grid,
.download-list {
    display: grid;
    max-width: var(--max);
    margin: 0 auto;
    gap: 18px;
}
.feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}
.feature-grid article,
.process-grid article,
.download-list article {
    padding: 24px;
    background: var(--white);
    border: 1px solid var(--line);
    border-top: 4px solid var(--red);
}
.feature-grid p,
.process-grid p,
.download-list p {
    color: var(--muted);
}
.specs-section {
    padding-top: 40px;
}
.spec-table {
    width: min(100%, var(--max));
    margin: 0 auto;
    border-collapse: collapse;
    background: var(--white);
    border: 1px solid var(--line);
}
.spec-table th,
.spec-table td {
    padding: 15px 18px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}
.spec-table th {
    width: 260px;
    color: var(--black);
    background: var(--light);
}
.split-section {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: var(--max);
    margin: 0 auto;
    gap: 28px;
}
.option-list,
.related-list {
    display: grid;
    gap: 10px;
}
.option-list span,
.related-list a {
    padding: 14px 16px;
    background: var(--light);
    border-left: 4px solid var(--red);
    font-weight: 800;
}
.process-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}
.process-grid span {
    display: block;
    margin-bottom: 18px;
    color: var(--red);
    font-size: 30px;
    font-weight: 900;
}
.compliance-grid article {
    min-height: 190px;
}
.download-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}
.download-list article {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px 18px;
    align-items: center;
}
.download-list h3,
.download-list p {
    margin-bottom: 0;
}
.download-list p {
    grid-column: 1;
}
.download-list .btn {
    grid-column: 2;
    grid-row: 1 / span 2;
    white-space: nowrap;
}
.product-inquiry {
    margin-top: 0;
}
.contact-page {
    align-items: start;
}

.model-name {
    margin: -4px 18px 10px;
    color: var(--muted);
    font-weight: 800;
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: var(--max);
    margin: 0 auto 28px;
    gap: 18px;
}
.catalog-card {
    display: grid;
    grid-template-rows: auto 1fr;
    background: var(--white);
    border: 1px solid var(--line);
}
.catalog-card img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    padding: 14px;
    background: var(--light);
}
.catalog-card div {
    padding: 18px;
}
.catalog-card p:not(.eyebrow) {
    color: var(--muted);
}
.catalog-card a,
.product-table a {
    color: var(--red);
    font-weight: 900;
}
.product-table {
    margin-top: 10px;
}
.certificate-proof {
    max-width: var(--max);
    margin: 28px auto 0;
    padding: 18px;
    background: var(--white);
    border: 1px solid var(--line);
}
.certificate-proof img {
    width: 100%;
    height: auto;
    aspect-ratio: 2742 / 1590;
    object-fit: contain;
    background: var(--light);
}
.certificate-proof-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}
.certificate-proof-grid img {
    aspect-ratio: 3 / 4;
    border: 1px solid var(--line);
    padding: 8px;
    background: var(--white);
}

.power-grid,
.series-grid,
.compact-grid {
    display: grid;
    max-width: var(--max);
    margin: 0 auto;
    gap: 20px;
}
.selector-layout {
    display: grid;
    grid-template-columns: minmax(280px, .72fr) minmax(0, 1fr);
    max-width: var(--max);
    margin: 0 auto;
    gap: 24px;
    align-items: stretch;
}
.selector-controls {
    display: grid;
    align-content: start;
    gap: 22px;
    padding: 24px;
    background: var(--white);
    border: 1px solid var(--line);
}
.selector-controls h3 {
    margin-bottom: 12px;
}
.selector-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.selector-btn {
    min-height: 42px;
    padding: 8px 13px;
    color: var(--white);
    background: var(--black);
    border: 0;
    border-left: 5px solid var(--red);
    font: inherit;
    font-weight: 900;
    cursor: pointer;
}
.selector-buttons-series .selector-btn {
    min-width: 42px;
    font-size: 20px;
}
.selector-btn.is-active,
.selector-btn:hover {
    background: var(--red);
    border-left-color: var(--black);
}
.selector-preview {
    display: grid;
    grid-template-columns: minmax(260px, .95fr) minmax(0, 1fr);
    background: var(--white);
    border: 1px solid var(--line);
}
.selector-preview img {
    width: 100%;
    height: 100%;
    min-height: 430px;
    object-fit: contain;
    padding: 24px;
    background: radial-gradient(circle at 50% 45%, #f8f9fb 0, #eef1f5 70%);
}
.selector-preview-body {
    display: grid;
    align-content: center;
    gap: 16px;
    padding: 30px;
}
.selector-preview-body h3 {
    margin-bottom: 0;
    font-size: clamp(28px, 3vw, 42px);
}
.selector-preview-body ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}
.selector-facts {
    display: grid;
    gap: 8px;
    padding-left: 0 !important;
    list-style: none;
}
.selector-facts li {
    display: grid;
    grid-template-columns: minmax(120px, .55fr) minmax(0, 1fr);
    gap: 12px;
    color: var(--muted);
}
.selector-facts strong {
    color: var(--black);
}
.selector-facts span {
    min-width: 0;
}
.power-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}
.power-card {
    display: grid;
    grid-template-columns: minmax(190px, .82fr) minmax(0, 1fr);
    min-height: 280px;
    background: var(--white);
    border: 1px solid var(--line);
}
.power-card img {
    width: 100%;
    height: 100%;
    min-height: 280px;
    object-fit: contain;
    padding: 18px;
    background: radial-gradient(circle at 50% 45%, #f8f9fb 0, #eef1f5 70%);
}
.power-card-body {
    display: grid;
    align-content: start;
    gap: 12px;
    padding: 24px;
}
.power-card h3 {
    margin-bottom: 0;
    font-size: 28px;
}
.power-card ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}
.series-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.series-badges span {
    display: inline-grid;
    place-items: center;
    min-width: 34px;
    min-height: 32px;
    padding: 4px 9px;
    color: var(--white);
    background: var(--black);
    border-left: 4px solid var(--red);
    font-weight: 900;
}
.series-badges span.is-active {
    background: var(--red);
    border-left-color: var(--black);
}
.series-switcher {
    display: flex;
    flex-wrap: wrap;
    max-width: var(--max);
    margin: -10px auto 28px;
    gap: 10px;
}
.series-switch-btn {
    display: inline-grid;
    place-items: center;
    min-width: 42px;
    min-height: 42px;
    padding: 8px 13px;
    color: var(--white);
    background: var(--black);
    border: 0;
    border-left: 5px solid var(--red);
    font: inherit;
    font-size: 20px;
    font-weight: 900;
    cursor: pointer;
}
.series-switch-btn.is-active,
.series-switch-btn:hover {
    background: var(--red);
    border-left-color: var(--black);
}
.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 4px;
}
.card-actions .btn {
    min-height: 42px;
    padding: 9px 13px;
    font-size: 13px;
}
.series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.series-card,
.compact-product {
    background: var(--white);
    border: 1px solid var(--line);
}
.compact-product[data-detail-url] {
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.compact-product[data-detail-url]:hover,
.compact-product[data-detail-url]:focus {
    border-color: rgba(227, 24, 35, .45);
    box-shadow: var(--shadow);
    outline: none;
    transform: translateY(-3px);
}
.series-card img,
.compact-product img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    padding: 14px;
    background: var(--light);
}
.series-card div,
.compact-product div {
    padding: 20px;
}
.series-card p,
.compact-product p {
    color: var(--muted);
}
.series-card a,
.compact-product a {
    color: var(--red);
    font-weight: 900;
    text-transform: uppercase;
    font-size: 13px;
}
.range-note {
    color: var(--black) !important;
    font-weight: 900;
}
.compact-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}
.full-data {
    max-width: var(--max);
    margin: 0 auto;
    background: var(--white);
    border: 1px solid var(--line);
}
.full-data summary {
    cursor: pointer;
    padding: 20px 24px;
    color: var(--black);
    background: var(--light);
    border-left: 5px solid var(--red);
    font-size: 20px;
    font-weight: 900;
}
.full-data-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 24px 0;
}
.full-data-note {
    margin: 18px 24px 0;
    color: var(--muted);
}
.spec-preview-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    max-width: var(--max);
    margin: 24px auto 0;
}
.table-scroll {
    overflow-x: auto;
    padding: 20px 24px 24px;
}
.table-scroll .spec-table {
    min-width: 1180px;
}

@media (max-width: 1180px) {
    .header-actions .whatsapp-link { display: none; }
    .main-nav { gap: 13px; font-size: 12px; }
    .category-nav-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .model-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .why-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .oem-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .process-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .power-grid,
    .series-grid,
    .compact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .power-card { grid-template-columns: 1fr; }
    .selector-layout,
    .selector-preview { grid-template-columns: 1fr; }
    .selector-preview img { min-height: 320px; }
}

@media (max-width: 900px) {
    .header-inner { min-height: 70px; }
    .nav-toggle { display: block; margin-left: auto; }
    .main-nav {
        position: absolute;
        top: 70px;
        right: 0;
        left: 0;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 12px 24px 18px;
        background: #161616;
    }
    .main-nav.is-open { display: flex; }
    .main-nav a {
        width: 100%;
        padding: 12px 0;
        border-bottom: 1px solid #2b2b2b;
    }
    .header-actions { display: none; }
    .hero-inner,
    .contact { grid-template-columns: 1fr; }
    .hero-inner { min-height: 0; }
    .hero-product { order: -1; }
    .hero-image-card img { height: 340px; }
    .contact-panel { justify-self: start; }
    .inner-hero {
        background:
            linear-gradient(100deg, rgba(10,10,10,.97), rgba(10,10,10,.84)),
            #101010;
    }
    .detail-layout,
    .split-section {
        grid-template-columns: 1fr;
    }
    .download-list {
        grid-template-columns: 1fr;
    }
    .product-list-section {
        overflow-x: auto;
    }
    .product-table {
        min-width: 760px;
    }
}

@media (max-width: 620px) {
    .brand small { display: none; }
    h1 { font-size: 40px; }
    .hero-actions,
    .hero-actions .btn { width: 100%; }
    .hero-metrics,
    .product-grid,
    .model-grid,
    .why-grid,
    .oem-grid,
    .catalog-grid,
    .power-grid,
    .series-grid,
    .compact-grid,
    .certificate-grid,
    .certificate-proof-grid { grid-template-columns: 1fr; }
    .card-body p,
    .model-card ul { min-height: 0; }
    .category-nav-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .category-nav-card {
        grid-template-columns: 1fr;
        align-items: start;
        min-height: 150px;
    }
    .contact { grid-template-columns: 1fr; }
    .inquiry-form { padding: 20px; }
    .site-footer { flex-direction: column; }
    .spec-chips,
    .feature-grid,
    .process-grid {
        grid-template-columns: 1fr;
    }
    .download-list article {
        grid-template-columns: 1fr;
    }
    .download-list .btn {
        grid-column: auto;
        grid-row: auto;
        width: 100%;
    }
    .spec-table th,
    .spec-table td {
        display: block;
        width: 100%;
    }
    .main-product-image {
        min-height: 280px;
    }
    .power-card img {
        min-height: 220px;
    }
    .card-actions .btn {
        width: 100%;
    }
}

@media (max-width: 430px) {
    .category-nav-grid { grid-template-columns: 1fr; }
    .category-nav-card {
        grid-template-columns: 64px minmax(0, 1fr);
        min-height: 132px;
    }
}