/* =====================================================================
   Quanyi Rubber - Frontend Stylesheet
   Industrial theme: Navy #0A2540 + Orange #FF6B1A
   Fonts: Oswald (display) + Inter (body)
   ===================================================================== */

/* ----------------------------- Variables ---------------------------- */
:root {
    --c-navy: #0A2540;
    --c-navy-2: #102F50;
    --c-navy-3: #1B3E63;
    --c-orange: #FF6B1A;
    --c-orange-2: #FF8A4C;
    --c-orange-dark: #E25400;
    --c-whatsapp: #25D366;

    --c-text: #1F2937;
    --c-text-light: #64748B;
    --c-text-muted: #94A3B8;
    --c-line: #E5E7EB;
    --c-line-2: #F1F5F9;
    --c-bg: #FFFFFF;
    --c-bg-alt: #F8FAFC;
    --c-bg-dark: #0A2540;

    --f-display: 'Oswald', 'Arial Narrow', sans-serif;
    --f-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --container: 1240px;
    --radius: 6px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(10, 37, 64, 0.08);
    --shadow: 0 4px 16px rgba(10, 37, 64, 0.10);
    --shadow-lg: 0 12px 40px rgba(10, 37, 64, 0.16);
    --shadow-orange: 0 8px 24px rgba(255, 107, 26, 0.30);
    --t: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ------------------------------- Reset ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--f-body);
    font-size: 16px;
    line-height: 1.65;
    color: var(--c-text);
    background: var(--c-bg);
    overflow-x: hidden;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--c-orange); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--c-orange-dark); }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6 {
    font-family: var(--f-display);
    color: var(--c-navy);
    line-height: 1.2;
    font-weight: 600;
    margin: 0 0 0.5em;
    letter-spacing: 0.005em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
p { margin: 0 0 1em; }

/* ---------------------------- Container ----------------------------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow { max-width: 860px; }
.site-main { min-height: 60vh; }

/* ------------------------------ Buttons ----------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-family: var(--f-body);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all var(--t);
    text-transform: uppercase;
    white-space: nowrap;
    line-height: 1.2;
}
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }

.btn-primary {
    background: var(--c-orange);
    color: #fff;
    border-color: var(--c-orange);
    box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
    background: var(--c-orange-dark);
    border-color: var(--c-orange-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(255, 107, 26, 0.42);
}

.btn-outline {
    background: transparent;
    color: var(--c-navy);
    border-color: var(--c-navy);
}
.btn-outline:hover {
    background: var(--c-navy);
    color: #fff;
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.7);
}
.btn-outline-light:hover {
    background: #fff;
    color: var(--c-navy);
    border-color: #fff;
}

.btn-outline-dark {
    background: transparent;
    color: var(--c-navy);
    border-color: var(--c-navy);
}
.btn-outline-dark:hover {
    background: var(--c-navy);
    color: #fff;
}

.btn-light {
    background: #fff;
    color: var(--c-navy);
    border-color: #fff;
}
.btn-light:hover {
    background: var(--c-orange);
    color: #fff;
    border-color: var(--c-orange);
}

/* --------------------------- Site Header ---------------------------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 37, 64, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(10, 37, 64, 0.18);
    transition: all var(--t);
}
.site-header.scrolled {
    background: rgba(10, 37, 64, 0.98);
    box-shadow: 0 4px 24px rgba(10, 37, 64, 0.28);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
}
.logo img { height: 48px; width: auto; }
.logo-text {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: 20px;
    letter-spacing: 0.02em;
    line-height: 1.1;
    color: #fff;
    display: flex;
    flex-direction: column;
}
.logo-text small {
    font-family: var(--f-body);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: var(--c-orange-2);
    text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; }
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}
.nav-menu > li { position: relative; }
.nav-menu > li > a {
    display: inline-block;
    padding: 10px 16px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    border-radius: 4px;
    transition: all var(--t);
}
.nav-menu > li > a:hover,
.nav-menu > li.active > a {
    color: #fff;
    background: rgba(255, 107, 26, 0.18);
}
.nav-menu > li.active > a::after {
    content: '';
    position: absolute;
    left: 16px; right: 16px;
    bottom: 4px;
    height: 2px;
    background: var(--c-orange);
    border-radius: 2px;
}

/* Dropdown */
.has-dropdown > a::after {
    content: '▾';
    margin-left: 6px;
    font-size: 10px;
    opacity: 0.7;
}
.dropdown {
    position: absolute;
    top: 100%; left: 0;
    min-width: 240px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--t);
}
.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown li a {
    display: block;
    padding: 9px 18px;
    color: var(--c-text);
    font-size: 14px;
    font-weight: 500;
}
.dropdown li a:hover {
    background: var(--c-line-2);
    color: var(--c-orange);
    padding-left: 22px;
}

.dropdown-mega {
    min-width: 640px;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
}
.has-dropdown:hover .dropdown-mega {
    transform: translateX(-50%) translateY(0);
}
.dropdown-mega-col {
    list-style: none;
}
.dropdown-mega-title {
    display: block;
    font-weight: 600;
    color: var(--c-navy) !important;
    font-size: 14px !important;
    padding: 8px 12px !important;
    margin-bottom: 4px;
    border-radius: 6px;
    font-family: var(--ff-heading);
}
.dropdown-mega-title:hover {
    background: var(--c-bg-alt) !important;
    color: var(--c-orange) !important;
    padding-left: 12px !important;
}
.dropdown-mega-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.dropdown-mega-list li a {
    padding: 6px 12px !important;
    font-size: 13px !important;
    color: var(--c-text-light) !important;
    border-radius: 4px;
}
.dropdown-mega-list li a:hover {
    background: var(--c-bg-alt) !important;
    color: var(--c-orange) !important;
    padding-left: 12px !important;
}

.nav-cta { margin-left: 8px; }
.nav-cta .btn { color: #fff; display: inline-flex !important; align-items: center; justify-content: center; gap: 6px; white-space: nowrap; padding: 8px 18px; min-width: 120px; }
.nav-cta .btn svg { flex-shrink: 0; display: inline-block; }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    width: 26px;
    height: 2px;
    background: #fff;
    transition: all var(--t);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------ Hero -------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    color: #fff;
    padding-top: 72px;
}
.hero-inner {
    max-width: 820px;
    padding: 60px 24px;
}
.hero-eyebrow {
    display: inline-block;
    font-family: var(--f-body);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-orange-2);
    margin: 0 0 20px;
    padding: 6px 14px;
    background: rgba(255, 107, 26, 0.12);
    border-left: 3px solid var(--c-orange);
    border-radius: 2px;
}
.hero-title {
    color: #fff;
    font-size: clamp(2.4rem, 6vw, 4.4rem);
    font-weight: 700;
    line-height: 1.05;
    margin: 0 0 24px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.hero-subtitle {
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.6;
    max-width: 640px;
    margin: 0 0 36px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 46px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}
.hero-scroll span {
    display: block;
    width: 4px;
    height: 8px;
    background: #fff;
    border-radius: 2px;
    animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot {
    0% { opacity: 0; transform: translateY(-6px); }
    40% { opacity: 1; }
    80% { opacity: 0; transform: translateY(10px); }
    100% { opacity: 0; }
}

/* ----------------------------- Sections ----------------------------- */
.section { padding: 90px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-dark {
    background: var(--c-navy);
    color: rgba(255, 255, 255, 0.92);
}
.section-dark h2,
.section-dark h3 { color: #fff; }

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px;
}
.section-eyebrow {
    font-family: var(--f-body);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-orange);
    margin: 0 0 14px;
}
.section-dark .section-eyebrow { color: var(--c-orange-2); }
.section-title {
    font-size: clamp(1.8rem, 3.4vw, 2.6rem);
    margin: 0 0 16px;
}
.section-subtitle {
    color: var(--c-text-light);
    font-size: 16px;
    margin: 0;
}
.section-dark .section-subtitle { color: rgba(255, 255, 255, 0.75); }

/* ----------------------- Section: Categories ------------------------ */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.category-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--t);
    color: var(--c-text);
}
.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    color: var(--c-text);
}
.category-card-image {
    height: 220px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.category-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(10, 37, 64, 0.85));
}
.category-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.category-card-title {
    font-size: 1.2rem;
    margin: 0 0 10px;
    color: var(--c-navy);
}
.category-card-desc {
    font-size: 14px;
    color: var(--c-text-light);
    margin: 0 0 16px;
    flex: 1;
}
.category-card-link {
    color: var(--c-orange);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: all var(--t);
}
.category-card:hover .category-card-link {
    color: var(--c-orange-dark);
    letter-spacing: 0.08em;
}

/* ------------------------ Section: Manufacturer -------------------- */
.section-manufacturer { background: var(--c-bg-alt); }
.mfr-intro {
    max-width: 880px;
    margin: 0 auto 56px;
    text-align: center;
    font-size: 17px;
    color: var(--c-text-light);
    line-height: 1.8;
}
.mfr-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.mfr-card {
    background: #fff;
    padding: 36px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    border-top: 3px solid transparent;
    box-shadow: var(--shadow-sm);
    transition: all var(--t);
}
.mfr-card:hover {
    transform: translateY(-4px);
    border-top-color: var(--c-orange);
    box-shadow: var(--shadow);
}
.mfr-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, var(--c-orange), var(--c-orange-2));
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-orange);
}
.mfr-icon svg { width: 28px; height: 28px; }
.mfr-title { font-size: 1.15rem; margin: 0 0 10px; color: var(--c-navy); }
.mfr-desc { font-size: 14px; color: var(--c-text-light); margin: 0; line-height: 1.6; }

/* ------------------------- Section: Process ------------------------ */
.process-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.process-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}
.process-content .section-eyebrow { margin-bottom: 12px; }
.process-content .section-title { text-align: left; }
.process-body {
    color: var(--c-text-light);
    line-height: 1.85;
    margin: 0 0 28px;
}

/* ------------------------- Section: Impulse ------------------------- */
.section-test { background: var(--c-bg-alt); }
.test-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.test-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}
.test-content .section-eyebrow { margin-bottom: 12px; }
.test-content .section-title { text-align: left; }
.test-body { color: var(--c-text-light); line-height: 1.85; margin: 0 0 32px; }
.test-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.test-stat {
    text-align: center;
    padding: 24px 14px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border-bottom: 3px solid var(--c-orange);
}
.test-stat-value {
    display: block;
    font-family: var(--f-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--c-navy);
    line-height: 1;
    margin-bottom: 6px;
}
.test-stat-label {
    display: block;
    font-size: 12px;
    color: var(--c-text-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.3;
}

/* ----------------------- Section: Applications --------------------- */
.app-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.app-card {
    position: relative;
    height: 320px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    color: #fff;
    box-shadow: var(--shadow);
    transition: all var(--t);
}
.app-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-lg);
    color: #fff;
}
.app-card-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s ease;
}
.app-card:hover .app-card-image { transform: scale(1.08); }
.app-card-body {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    padding: 24px;
    z-index: 1;
}
.app-card-title {
    color: #fff;
    font-size: 1.3rem;
    margin: 0 0 6px;
}
.app-card-desc {
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
    margin: 0;
}

/* ----------------------- Section: Testimonials --------------------- */
.section-testimonials { background: var(--c-bg-alt); }
.testi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.testi-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: all var(--t);
}
.testi-card::before {
    content: '"';
    position: absolute;
    top: -10px; left: 24px;
    font-family: var(--f-display);
    font-size: 80px;
    color: var(--c-orange);
    line-height: 1;
    opacity: 0.18;
}
.testi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.testi-stars {
    color: #FFB400;
    letter-spacing: 2px;
    font-size: 16px;
    margin-bottom: 14px;
}
.testi-quote {
    margin: 0 0 22px;
    color: var(--c-text);
    font-style: italic;
    line-height: 1.7;
    font-size: 15px;
}
.testi-author {
    display: flex;
    align-items: center;
    gap: 14px;
    border-top: 1px solid var(--c-line);
    padding-top: 18px;
}
.testi-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--c-orange);
}
.testi-name {
    font-family: var(--f-display);
    font-weight: 600;
    color: var(--c-navy);
    margin: 0;
    font-size: 15px;
}
.testi-meta {
    color: var(--c-text-light);
    font-size: 13px;
    margin: 2px 0 0;
}

/* --------------------------- Section: OEM -------------------------- */
.section-oem { padding: 60px 0 90px; }
.oem-banner {
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 60px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.oem-banner::before,
.oem-banner::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 107, 26, 0.10);
}
.oem-banner::before {
    width: 320px; height: 320px;
    top: -160px; right: -80px;
}
.oem-banner::after {
    width: 240px; height: 240px;
    bottom: -120px; left: -60px;
    background: rgba(255, 138, 76, 0.08);
}
.oem-header { position: relative; z-index: 1; margin-bottom: 36px; }
.oem-title {
    color: #fff;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    margin: 0 0 12px;
}
.oem-subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 16px;
    max-width: 720px;
    margin: 0 auto;
}
.oem-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
    margin-bottom: 36px;
}
.oem-feature {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 22px;
    border-radius: var(--radius);
    text-align: left;
}
.oem-feature-icon {
    width: 36px; height: 36px;
    background: var(--c-orange);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}
.oem-feature-icon svg { width: 18px; height: 18px; }
.oem-feature h3 { color: #fff; font-size: 1.05rem; margin: 0 0 6px; }
.oem-feature p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 13px;
    margin: 0;
    line-height: 1.6;
}
.oem-cta { position: relative; z-index: 1; }

/* -------------------------- Section: Agents ------------------------ */
.section-agents {
    background: linear-gradient(rgba(10, 37, 64, 0.92), rgba(10, 37, 64, 0.92)),
                url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60" viewBox="0 0 60 60"><path fill="rgba(255,107,26,0.04)" d="M30 0L0 30l30 30 30-30z"/></svg>');
    color: #fff;
    text-align: center;
}
.agents-inner {
    max-width: 820px;
    margin: 0 auto;
}
.section-agents .section-title { color: #fff; }
.agents-body {
    color: rgba(255, 255, 255, 0.88);
    font-size: 17px;
    line-height: 1.8;
    margin: 0 0 32px;
}

/* ------------------------ Section: Footer CTA ---------------------- */
.section-footer-cta {
    background: var(--c-bg-alt);
    text-align: center;
    padding: 90px 0;
}
.footer-cta-inner { max-width: 820px; margin: 0 auto; }
.footer-cta-title {
    font-size: clamp(1.7rem, 3.2vw, 2.4rem);
    margin: 0 0 18px;
}
.footer-cta-body {
    color: var(--c-text-light);
    font-size: 17px;
    line-height: 1.8;
    margin: 0 0 32px;
}
.footer-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* ----------------------------- Footer ------------------------------ */
.site-footer {
    background: #06182B;
    color: rgba(255, 255, 255, 0.75);
    padding: 70px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 50px;
}
.footer-title {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-orange);
    display: inline-block;
}
.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    margin: 0 0 18px;
    color: rgba(255, 255, 255, 0.65);
}
.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin: 0 0 10px;
    color: rgba(255, 255, 255, 0.85);
}
.footer-contact p svg { color: var(--c-orange); flex-shrink: 0; }
.footer-contact a { color: rgba(255, 255, 255, 0.85); }
.footer-contact a:hover { color: var(--c-orange); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    transition: all var(--t);
    display: inline-block;
}
.footer-links a:hover {
    color: var(--c-orange);
    transform: translateX(4px);
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 22px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
}

/* -------------------------- WhatsApp Float ------------------------- */
.whatsapp-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 60px;
    height: 60px;
    background: var(--c-whatsapp);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
    z-index: 999;
    transition: all var(--t);
    animation: waPulse 2.4s infinite;
}
.whatsapp-float:hover {
    transform: scale(1.08);
    color: #fff;
    background: #20BD5A;
}
.whatsapp-float svg { width: 32px; height: 32px; }
.whatsapp-tooltip {
    position: absolute;
    right: 72px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--c-navy);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--t);
    pointer-events: none;
}
.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 6px solid var(--c-navy);
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}
.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    right: 80px;
}
@keyframes waPulse {
    0% { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45), 0 0 0 0 rgba(37, 211, 102, 0.55); }
    70% { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45), 0 0 0 16px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45), 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ===================== Page Hero (inner pages) ===================== */
.page-hero {
    padding: 140px 0 56px;
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: rgba(255, 107, 26, 0.06);
    top: -200px; right: -100px;
}
.page-hero-title {
    color: #fff;
    font-size: clamp(2rem, 4vw, 3rem);
    margin: 0 0 12px;
    position: relative;
}
.page-hero-subtitle {
    color: rgba(255, 255, 255, 0.88);
    font-size: 16px;
    max-width: 720px;
    margin: 0 auto;
    position: relative;
}

/* Breadcrumbs */
.breadcrumbs ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin: 18px 0 0;
    font-size: 13px;
    position: relative;
}
.breadcrumbs li { color: rgba(255, 255, 255, 0.6); }
.breadcrumbs li::after {
    content: '/';
    margin-left: 8px;
    color: rgba(255, 255, 255, 0.3);
}
.breadcrumbs li:last-child::after { display: none; }
.breadcrumbs a { color: rgba(255, 255, 255, 0.8); }
.breadcrumbs a:hover { color: var(--c-orange-2); }
.breadcrumbs li[aria-current="page"] { color: var(--c-orange-2); }

/* ====================== Page: Products List ======================== */
.section-products-list { padding: 50px 0 80px; }
.section-products-list .container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 36px;
    align-items: start;
}
.products-sidebar {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 26px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 90px;
}
.sidebar-title {
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-orange);
    color: var(--c-navy);
}
.cat-nav { list-style: none; margin: 0 0 24px; }
.cat-nav li { margin-bottom: 4px; }
.cat-nav a {
    display: block;
    padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--c-text);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--t);
}
.cat-nav a:hover {
    background: var(--c-bg-alt);
    color: var(--c-orange);
    padding-left: 18px;
}
.cat-nav li.active a {
    background: var(--c-navy);
    color: #fff;
}

.cat-nav-horizontal {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin: 0 0 40px;
}
.cat-nav-horizontal li a {
    display: inline-block;
    padding: 8px 18px;
    border: 1px solid var(--c-line);
    border-radius: 20px;
    color: var(--c-text);
    font-size: 13px;
    font-weight: 500;
    transition: all var(--t);
}
.cat-nav-horizontal li a:hover,
.cat-nav-horizontal li.active a {
    background: var(--c-orange);
    color: #fff;
    border-color: var(--c-orange);
}

.search-form {
    display: flex;
    margin-bottom: 24px;
    position: relative;
}
.search-form input {
    flex: 1;
    width: 100%;
    padding: 10px 14px 10px 38px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    font-family: var(--f-body);
    font-size: 13px;
    transition: border-color var(--t);
}
.search-form input:focus {
    outline: none;
    border-color: var(--c-orange);
}
.search-form button {
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 0;
    cursor: pointer;
    color: var(--c-text-muted);
    padding: 4px;
    display: flex;
}
.search-form button:hover { color: var(--c-orange); }

.sidebar-cta {
    background: linear-gradient(135deg, var(--c-navy), var(--c-navy-3));
    color: #fff;
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
}
.sidebar-cta h4 {
    color: #fff;
    font-size: 15px;
    margin: 0 0 6px;
}
.sidebar-cta p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 12px;
    margin: 0 0 14px;
}

.products-content { min-width: 0; }

.sub-categories {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}
.sub-cat-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--c-navy);
    margin: 0 0 16px;
    font-family: var(--ff-heading);
}
.sub-cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.sub-cat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    color: var(--c-text);
    font-size: 14px;
    text-decoration: none;
    transition: all var(--t);
}
.sub-cat-item:hover {
    border-color: var(--c-orange);
    color: var(--c-orange);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.sub-cat-item.active {
    background: var(--c-navy);
    color: #fff;
    border-color: var(--c-navy);
}
.sub-cat-image {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    background-size: cover;
    background-position: center;
    background-color: var(--c-bg-alt);
    flex-shrink: 0;
}
.sub-cat-name {
    line-height: 1.4;
    font-weight: 500;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--t);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.product-card-image {
    aspect-ratio: 4 / 3;
    background: var(--c-line-2);
    overflow: hidden;
    position: relative;
    display: block;
}
.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.product-card:hover .product-card-image img { transform: scale(1.06); }
.product-card-tag,
.product-card-featured {
    position: absolute;
    top: 12px; left: 12px;
    background: var(--c-orange);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.product-card-body {
    padding: 18px 20px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.product-card-title {
    font-size: 15px;
    line-height: 1.4;
    margin: 0 0 8px;
    color: var(--c-navy);
    min-height: 42px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card-title a { color: inherit; }
.product-card:hover .product-card-title,
.product-card:hover .product-card-title a { color: var(--c-orange); }
.product-card-summary {
    font-size: 13px;
    color: var(--c-text-light);
    margin: 0 0 14px;
    line-height: 1.55;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card-link {
    color: var(--c-orange);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 40px;
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    color: var(--c-text);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--t);
}
.pagination a:hover {
    background: var(--c-navy);
    color: #fff;
    border-color: var(--c-navy);
}
.pagination .active {
    background: var(--c-orange);
    color: #fff;
    border-color: var(--c-orange);
}
.pagination .disabled { color: var(--c-text-muted); cursor: not-allowed; }

/* ==================== Page: Product Detail ======================== */
.product-detail { padding: 40px 0 80px; }
.product-breadcrumb {
    font-size: 13px;
    color: var(--c-text-light);
    margin-bottom: 24px;
}
.product-breadcrumb a { color: var(--c-text-light); }
.product-breadcrumb a:hover { color: var(--c-orange); }
.product-breadcrumb span { margin: 0 8px; color: var(--c-text-muted); }

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    margin-bottom: 60px;
}
.product-gallery { position: sticky; top: 90px; height: fit-content; }
.gallery-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--c-line-2);
    aspect-ratio: 1;
    box-shadow: var(--shadow);
}
.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.gallery-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.gallery-thumbs .thumb,
.gallery-thumb {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color var(--t);
    background: var(--c-line-2);
    padding: 0;
}
.gallery-thumbs .thumb img,
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs .thumb.active,
.gallery-thumbs .thumb:hover,
.gallery-thumb.active,
.gallery-thumb:hover { border-color: var(--c-orange); }

.product-info h1 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin: 0 0 16px;
    line-height: 1.2;
}
.product-info-summary {
    color: var(--c-text-light);
    font-size: 16px;
    line-height: 1.7;
    margin: 0 0 24px;
}
.product-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 24px 0 28px;
}

.quick-specs {
    background: var(--c-bg-alt);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}
.quick-specs h3 {
    font-size: 1.05rem;
    margin: 0 0 14px;
    color: var(--c-navy);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--c-line);
}
.quick-specs dl {
    margin: 0;
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 8px 16px;
}
.quick-specs dt {
    font-weight: 600;
    color: var(--c-text);
    font-size: 13px;
}
.quick-specs dd {
    margin: 0;
    color: var(--c-text-light);
    font-size: 13px;
}

/* Product detail sections */
.product-section {
    margin-bottom: 50px;
}
.product-section h2 {
    font-size: 1.5rem;
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-orange);
    display: inline-block;
}
.spec-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.spec-table th,
.spec-table td {
    padding: 14px 20px;
    text-align: left;
    border-bottom: 1px solid var(--c-line);
    font-size: 14px;
}
.spec-table th {
    background: var(--c-navy);
    color: #fff;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.04em;
}
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table tr:nth-child(even) td { background: var(--c-bg-alt); }
.spec-table td:first-child {
    font-weight: 600;
    color: var(--c-navy);
    width: 40%;
}

.product-description { line-height: 1.8; color: var(--c-text); }
.product-description :last-child { margin-bottom: 0; }
.product-description ul { padding-left: 22px; margin-bottom: 1em; }
.product-description li { margin-bottom: 6px; }

.related-products { background: var(--c-bg-alt); padding: 60px 0; margin: 60px 0 0; }
.related-products .section-title { text-align: center; margin-bottom: 40px; }

/* Inquiry section (product detail) */
.section-inquiry {
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
    padding: 70px 0;
}
.inquiry-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 48px;
    max-width: 760px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}
.inquiry-header { text-align: center; margin-bottom: 32px; }
.inquiry-header h2 {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    margin: 0 0 10px;
}
.inquiry-header p { color: var(--c-text-light); margin: 0; }
.inquiry-form .form-field label { color: var(--c-navy); }
.inquiry-form .btn { width: 100%; }

/* =================== Page: Articles List ========================== */
.section-articles { padding: 50px 0 80px; }
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.article-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--t);
    display: flex;
    flex-direction: column;
}
.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.article-card-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--c-line-2);
    position: relative;
    display: block;
}
.article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.article-card:hover .article-card-image img { transform: scale(1.06); }
.article-card-tag {
    position: absolute;
    top: 12px; left: 12px;
    background: var(--c-orange);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.article-card-body {
    padding: 22px 24px 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--c-text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.article-card-title {
    font-size: 1.15rem;
    line-height: 1.4;
    margin: 0 0 10px;
    color: var(--c-navy);
}
.article-card-title a { color: inherit; }
.article-card:hover .article-card-title,
.article-card:hover .article-card-title a { color: var(--c-orange); }
.article-card-excerpt,
.article-card-summary {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.6;
    margin: 0 0 14px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-card-link {
    color: var(--c-orange);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* =================== Page: Article Detail ========================= */
.article-detail-hero {
    padding: 130px 0 40px;
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
    color: #fff;
}
.article-detail-hero .breadcrumbs { margin-bottom: 16px; }
.article-detail {
    padding: 50px 0 80px;
}
.article-header { margin-bottom: 30px; }
.article-cat-tag {
    display: inline-block;
    background: var(--c-orange);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
}
.article-title {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    margin: 0 0 16px;
    line-height: 1.2;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--c-text-light);
    font-size: 13px;
    margin: 0;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--c-line);
}
.article-cover {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}
.article-cover img { width: 100%; }
.article-excerpt {
    font-size: 17px;
    color: var(--c-text-light);
    line-height: 1.7;
    font-style: italic;
    margin: 0 0 30px;
    padding-left: 18px;
    border-left: 3px solid var(--c-orange);
}
.article-content,
.rich-text {
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
}
.article-content :last-child,
.rich-text :last-child { margin-bottom: 0; }
.article-content h2, .rich-text h2 { margin-top: 1.5em; }
.article-content h3, .rich-text h3 { margin-top: 1.3em; }
.article-content img, .rich-text img { border-radius: var(--radius); margin: 1.5em 0; }
.article-content ul, .article-content ol,
.rich-text ul, .rich-text ol { padding-left: 24px; margin: 1em 0; }
.article-content li, .rich-text li { margin-bottom: 8px; }
.article-content blockquote, .rich-text blockquote {
    border-left: 4px solid var(--c-orange);
    background: var(--c-bg-alt);
    padding: 16px 20px;
    margin: 1.5em 0;
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--c-text-light);
    font-style: italic;
}
.article-content pre, .rich-text pre {
    background: var(--c-navy);
    color: #E2E8F0;
    padding: 18px;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 13px;
}
.article-content code, .rich-text code {
    background: var(--c-line-2);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
}
.article-content table, .rich-text table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
}
.article-content table th, .article-content table td,
.rich-text table th, .rich-text table td {
    border: 1px solid var(--c-line);
    padding: 10px 14px;
    text-align: left;
    font-size: 14px;
}

.article-cta {
    margin-top: 50px;
    padding: 36px;
    background: linear-gradient(135deg, var(--c-navy), var(--c-navy-3));
    color: #fff;
    border-radius: var(--radius-lg);
    text-align: center;
}
.article-cta h3 { color: #fff; font-size: 1.4rem; margin: 0 0 8px; }
.article-cta p { color: rgba(255, 255, 255, 0.85); margin: 0 0 20px; }
.article-cta .btn { margin: 0 6px; }

.section-related-articles {
    background: var(--c-bg-alt);
    padding: 60px 0;
}
.section-related-articles .section-title { text-align: center; margin-bottom: 40px; }

/* ========================= Page: About ============================ */
.page-hero-about {
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
}
.section-about-stats { padding: 60px 0; background: #fff; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-card {
    text-align: center;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: var(--c-bg-alt);
    transition: all var(--t);
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.stat-value {
    font-family: var(--f-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--c-orange);
    line-height: 1;
    margin-bottom: 8px;
}
.stat-label {
    font-size: 14px;
    color: var(--c-text-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.section-about-intro { padding: 70px 0; background: var(--c-bg-alt); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.about-grid img,
.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}
.about-body {
    color: var(--c-text-light);
    line-height: 1.85;
    margin: 0 0 14px;
}

.section-about-history { padding: 70px 0; }
.content-block { max-width: 860px; margin: 0 auto; }
.content-block .section-eyebrow { margin-bottom: 12px; }
.content-block .section-title { text-align: left; }
.content-block p { color: var(--c-text-light); line-height: 1.85; }

.section-about-cert { padding: 70px 0; background: var(--c-bg-alt); }
.cert-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.cert-list {
    list-style: none;
    margin: 20px 0 0;
}
.cert-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--c-line);
    color: var(--c-text-light);
    font-size: 15px;
}
.cert-list li:last-child { border-bottom: 0; }
.cert-list strong {
    color: var(--c-navy);
    font-family: var(--f-display);
    font-size: 16px;
    display: inline-block;
    min-width: 140px;
}
.cert-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}

.section-about-team { padding: 70px 0; }

.section-about-cta { padding: 70px 0; background: var(--c-navy); color: #fff; }
.about-cta-inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}
.about-cta-inner h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 14px; }
.about-cta-inner p { color: rgba(255, 255, 255, 0.85); margin: 0 0 26px; font-size: 16px; }

/* ========================= Page: Contact ========================== */
.section-contact { padding: 60px 0 80px; }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}
.contact-info { }
.contact-info .section-title { text-align: left; margin-bottom: 12px; }
.contact-intro {
    color: var(--c-text-light);
    line-height: 1.7;
    margin: 0 0 28px;
}
.contact-list {
    list-style: none;
    margin: 0 0 28px;
}
.contact-list li {
    display: flex;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--c-line);
}
.contact-list li:last-child { border-bottom: 0; }
.contact-icon {
    width: 44px; height: 44px;
    background: rgba(255, 107, 26, 0.12);
    color: var(--c-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.contact-icon svg { width: 20px; height: 20px; }
.contact-list h4 {
    font-family: var(--f-body);
    font-size: 12px;
    color: var(--c-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 4px;
    font-weight: 600;
}
.contact-list p,
.contact-list a {
    color: var(--c-text);
    font-size: 15px;
    margin: 0;
    word-break: break-word;
}
.contact-list a:hover { color: var(--c-orange); }

.contact-quick-cta { margin-top: 24px; }

.contact-form-wrap,
.contact-form-block {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}
.contact-form-wrap .section-title { text-align: left; font-size: 1.5rem; margin: 0 0 8px; }
.contact-form-wrap > p { color: var(--c-text-light); margin: 0 0 24px; }
.contact-form { }

/* Form fields (shared) */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
.form-field { margin-bottom: 16px; }
.form-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-navy);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.form-field label .req { color: var(--c-orange); }
.form-field input,
.form-field select,
.form-field textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    font-family: var(--f-body);
    font-size: 14px;
    color: var(--c-text);
    background: #fff;
    transition: all var(--t);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--c-orange);
    box-shadow: 0 0 0 3px rgba(255, 107, 26, 0.12);
}
.form-field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: 12px; color: var(--c-text-muted); margin: 12px 0 0; }

/* Form result / feedback messages */
.form-result,
.form-feedback {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin: 16px 0 0;
    font-size: 14px;
    line-height: 1.5;
    display: none;
}
.form-result.show,
.form-feedback.show { display: block; }
.form-result.success,
.form-feedback.success {
    background: #ECFDF5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}
.form-result.error,
.form-feedback.error {
    background: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}
.form-result.loading,
.form-feedback.loading {
    background: #EFF6FF;
    color: #1E40AF;
    border: 1px solid #93C5FD;
}

/* ============================= 404 ================================= */
.page-404 {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 130px 0 80px;
}
.error-code {
    font-family: var(--f-display);
    font-size: clamp(6rem, 18vw, 12rem);
    font-weight: 700;
    color: var(--c-orange);
    line-height: 1;
    margin: 0;
}
.page-404 h1 { font-size: 2rem; margin: 16px 0 12px; }
.page-404 p { color: var(--c-text-light); max-width: 500px; margin: 0 auto 28px; }

/* ===================== Empty state / utility ====================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--c-text-light);
    grid-column: 1 / -1;
}
.empty-state svg {
    width: 56px; height: 56px;
    color: var(--c-line);
    margin: 0 auto 16px;
}
.empty-state h3 { color: var(--c-navy); margin: 0 0 8px; }
.empty-state p { margin: 0 0 18px; }

.text-center { text-align: center; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

/* ====================== Responsive Breakpoints ===================== */
@media (max-width: 1100px) {
    .category-grid,
    .mfr-grid,
    .app-grid { grid-template-columns: repeat(2, 1fr); }
    .testi-grid { grid-template-columns: 1fr; }
    .oem-features { grid-template-columns: 1fr; }
    .product-grid,
    .article-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed;
        top: 72px; right: 0;
        flex-direction: column;
        align-items: stretch;
        width: 280px;
        max-width: 80vw;
        height: calc(100vh - 72px);
        background: var(--c-navy);
        padding: 20px 16px;
        gap: 4px;
        transform: translateX(100%);
        transition: transform var(--t);
        overflow-y: auto;
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.3);
    }
    .nav-menu.open { transform: translateX(0); }
    .nav-menu > li { width: 100%; }
    .nav-menu > li > a { display: block; padding: 14px 16px; }
    .nav-menu > li.active > a::after { display: none; }
    .has-dropdown > a::after { display: none; }
    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.06);
        margin: 4px 0 8px;
        padding: 4px 0;
    }
    .dropdown li a { color: rgba(255, 255, 255, 0.8); padding: 8px 24px; }
    .dropdown-mega {
        min-width: auto;
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 8px 0;
        background: transparent;
        box-shadow: none;
        left: auto;
        transform: none;
        position: static;
        opacity: 1;
        visibility: visible;
    }
    .dropdown-mega-title {
        color: rgba(255, 255, 255, 0.95) !important;
    }
    .dropdown-mega-list li a {
        color: rgba(255, 255, 255, 0.7) !important;
    }
    .nav-cta { margin: 12px 0 0; }
    .nav-cta .btn { width: 100%; }

    .process-grid,
    .test-grid,
    .product-detail-grid,
    .contact-grid,
    .about-grid,
    .cert-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .product-gallery { position: static; }
    .section-products-list .container { grid-template-columns: 1fr; }
    .products-sidebar { position: static; }
    .sub-cat-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .container { padding: 0 16px; }
    .section { padding: 60px 0; }
    .hero { min-height: 90vh; }
    .hero-inner { padding: 40px 0; }
    .hero-cta .btn,
    .footer-cta-actions .btn { width: 100%; }
    .category-grid,
    .mfr-grid,
    .app-grid,
    .product-grid,
    .article-grid,
    .stats-grid { grid-template-columns: 1fr; }
    .test-stats { grid-template-columns: 1fr; }
    .oem-banner { padding: 40px 24px; }
    .contact-form-wrap,
    .contact-form-block,
    .inquiry-card { padding: 28px 22px; }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .whatsapp-float {
        right: 16px;
        bottom: 16px;
        width: 54px;
        height: 54px;
    }
    .whatsapp-float svg { width: 28px; height: 28px; }
    .logo-text { font-size: 17px; }
    .logo-text small { font-size: 10px; }
    .page-hero { padding: 120px 0 40px; }
}

/* =====================================================================
   B2B UPGRADE - New Sections (Hero / Industries / Solutions / Why Us
   / Manufacturing / QC / Certifications / Final CTA / SEO Landing Pages
   / Product Detail Upgrade / FAQ)
   ===================================================================== */

/* Hero - Industrial upgrade */
.hero-industrial .hero-inner { max-width: 880px; }
.hero-eyebrow-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--c-orange);
    border-radius: 50%;
    margin-right: 10px;
    vertical-align: middle;
    box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.25);
    animation: pulseDot 2s infinite;
}
@keyframes pulseDot {
    0%, 100% { box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.25); }
    50% { box-shadow: 0 0 0 8px rgba(255, 107, 26, 0.1); }
}
.hero-trust {
    margin-top: 36px;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.hero-trust strong { color: var(--c-orange-2); font-weight: 700; margin-right: 4px; }

/* ------------------ Section: Industries (6 cards) ------------------ */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.industry-card {
    position: relative;
    display: block;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 280px;
    color: #fff;
    transition: transform var(--t), box-shadow var(--t);
    box-shadow: var(--shadow-sm);
}
.industry-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    color: #fff;
}
.industry-card-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
}
.industry-card:hover .industry-card-image { transform: scale(1.08); }
.industry-card-body {
    position: relative;
    z-index: 2;
    padding: 24px;
    margin-top: auto;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 37, 64, 0.55) 50%, rgba(10, 37, 64, 0.95) 100%);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 280px;
}
.industry-card-title {
    color: #fff;
    font-size: 1.3rem;
    margin: 0 0 8px;
}
.industry-card-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    margin: 0 0 14px;
}
.industry-card-link {
    color: var(--c-orange-2);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: color var(--t);
}
.industry-card:hover .industry-card-link { color: #fff; }

/* ------------------ Category grid - 6 cards ------------------ */
.category-grid-6 {
    grid-template-columns: repeat(3, 1fr);
}
.category-card-index {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(255, 107, 26, 0.95);
    color: #fff;
    font-family: var(--f-display);
    font-size: 14px;
    font-weight: 700;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(255, 107, 26, 0.4);
}

/* ------------------ Two-level category layout ------------------ */
.category-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 32px;
    align-items: start;
}
.category-main-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 12px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 24px;
}
.category-main-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--t);
    border: 2px solid transparent;
}
.category-main-item:hover {
    background: var(--c-bg-alt);
}
.category-main-item.active {
    background: var(--c-navy);
    border-color: var(--c-navy);
}
.category-main-item.active .category-main-title,
.category-main-item.active .category-main-count {
    color: #fff;
}
.category-main-item.active .category-main-arrow {
    color: #fff;
    transform: translateX(4px);
}
.category-main-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background-size: cover;
    background-position: center;
    background-color: var(--c-bg-alt);
    flex-shrink: 0;
}
.category-main-info {
    flex: 1;
    min-width: 0;
}
.category-main-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--c-navy);
    margin: 0 0 2px;
    font-family: var(--ff-heading);
}
.category-main-count {
    font-size: 12px;
    color: var(--c-text-light);
}
.category-main-arrow {
    color: var(--c-text-light);
    transition: all var(--t);
    flex-shrink: 0;
}
.category-sub-panel {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    min-height: 400px;
}
.category-sub-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}
.category-sub-pane.active {
    display: block;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.category-sub-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--c-line);
}
.category-sub-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--c-navy);
    margin: 0 0 10px;
    font-family: var(--ff-heading);
}
.category-sub-desc {
    font-size: 15px;
    color: var(--c-text-light);
    line-height: 1.7;
    margin: 0 0 16px;
}
.category-sub-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.sub-category-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--c-text);
    transition: all var(--t);
    background: #fff;
}
.sub-category-card:hover {
    border-color: var(--c-orange);
    color: var(--c-orange);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.sub-cat-thumb {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background-size: cover;
    background-position: center;
    background-color: var(--c-bg-alt);
    flex-shrink: 0;
}
.sub-cat-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: var(--c-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-orange);
    flex-shrink: 0;
}
.sub-cat-label {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
}
.sub-cat-arrow {
    color: var(--c-text-light);
    flex-shrink: 0;
    transition: transform var(--t);
}
.sub-category-card:hover .sub-cat-arrow {
    color: var(--c-orange);
    transform: translateX(4px);
}

/* ------------------ Section: Solutions ------------------ */
.solutions-head {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: end;
    margin-bottom: 48px;
}
.solutions-intro {
    color: var(--c-text-light);
    font-size: 16px;
    line-height: 1.75;
    margin: 0;
}
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.solution-card {
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    transition: all var(--t);
    display: flex;
    flex-direction: column;
}
.solution-card:hover {
    border-color: var(--c-orange);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.solution-card-num {
    font-family: var(--f-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--c-orange);
    line-height: 1;
    margin-bottom: 14px;
}
.solution-card-title {
    font-size: 1.1rem;
    margin: 0 0 10px;
    color: var(--c-navy);
}
.solution-card-desc {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.6;
    flex: 1;
    margin: 0 0 16px;
}
.solution-card-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--c-orange);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ------------------ Section: Why Choose Us ------------------ */
.whyus-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}
.whyus-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 22px;
    border-top: 3px solid transparent;
    transition: all var(--t);
    box-shadow: var(--shadow-sm);
    text-align: left;
}
.whyus-card:hover {
    border-top-color: var(--c-orange);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.whyus-num {
    font-family: var(--f-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--c-orange);
    line-height: 1;
    margin-bottom: 14px;
}
.whyus-title {
    font-size: 1.05rem;
    margin: 0 0 10px;
    color: var(--c-navy);
    line-height: 1.3;
}
.whyus-desc {
    font-size: 13.5px;
    color: var(--c-text-light);
    line-height: 1.6;
    margin: 0;
}

/* ------------------ Section: Manufacturing ------------------ */
.mfg-process {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px 32px;
}
.mfg-step {
    position: relative;
    padding-left: 64px;
}
.mfg-step-num {
    position: absolute;
    top: 0;
    left: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--c-navy), var(--c-navy-3));
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--f-display);
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 6px 16px rgba(10, 37, 64, 0.25);
}
.mfg-step-num::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--c-orange);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--t);
}
.mfg-step:hover .mfg-step-num::after { opacity: 1; }
.mfg-step-title {
    font-size: 1.1rem;
    margin: 4px 0 8px;
    color: var(--c-navy);
}
.mfg-step-desc {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.6;
    margin: 0;
}

/* ------------------ Section: Quality Control ------------------ */
.qc-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 56px;
    align-items: center;
}
.qc-body {
    color: var(--c-text-light);
    font-size: 16px;
    line-height: 1.85;
    margin: 0 0 28px;
}
.qc-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.qc-stat {
    background: #fff;
    border-radius: var(--radius);
    padding: 22px 16px;
    text-align: center;
    border: 1px solid var(--c-line);
    transition: all var(--t);
}
.qc-stat:hover {
    border-color: var(--c-orange);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.qc-stat-value {
    display: block;
    font-family: var(--f-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--c-orange);
    line-height: 1;
    margin-bottom: 8px;
}
.qc-stat-label {
    font-size: 12px;
    color: var(--c-text-light);
    line-height: 1.4;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.qc-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.qc-image img {
    width: 100%;
    height: 460px;
    object-fit: cover;
}

/* ------------------ Section: Certifications ------------------ */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 18px;
}
.cert-badge {
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-lg);
    padding: 32px 16px;
    text-align: center;
    transition: all var(--t);
}
.cert-badge:hover {
    border-color: var(--c-orange);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.cert-badge-mark {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    background: linear-gradient(135deg, var(--c-navy), var(--c-navy-3));
    color: var(--c-orange-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--f-display);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.05em;
}
.cert-badge h3 {
    font-size: 1rem;
    margin: 0 0 6px;
    color: var(--c-navy);
}
.cert-badge p {
    font-size: 12px;
    color: var(--c-text-light);
    margin: 0;
    line-height: 1.4;
}

/* ------------------ Section: Final CTA ------------------ */
.section-final-cta {
    background:
      radial-gradient(circle at 20% 50%, rgba(255, 107, 26, 0.15), transparent 60%),
      linear-gradient(135deg, var(--c-navy) 0%, #071628 100%);
    color: #fff;
    padding: 100px 0;
}
.final-cta-inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.final-cta-inner .section-eyebrow { color: var(--c-orange-2); }
.final-cta-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: #fff;
    margin: 0 0 18px;
    line-height: 1.2;
}
.final-cta-body {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.75;
    margin: 0 0 36px;
}
.final-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}

/* =====================================================================
   SEO Landing Pages
   ===================================================================== */
.seo-hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 120px 0 80px;
}
.seo-hero h1 {
    color: #fff;
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    margin: 0 0 22px;
    max-width: 880px;
    line-height: 1.15;
}
.seo-hero-sub {
    color: rgba(255, 255, 255, 0.92);
    font-size: clamp(1rem, 1.5vw, 1.18rem);
    line-height: 1.7;
    max-width: 780px;
    margin: 0 0 30px;
}
.seo-content {
    font-size: 17px;
    line-height: 1.85;
    color: var(--c-text);
}
.seo-content h2 {
    margin: 0 0 22px;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
}
.seo-content p { color: var(--c-text); margin: 0 0 18px; }
.seo-content strong { color: var(--c-navy); }

.seo-product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.seo-product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 26px 22px;
    border: 1px solid var(--c-line);
    transition: all var(--t);
    display: flex;
    flex-direction: column;
}
.seo-product-card:hover {
    border-color: var(--c-orange);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.seo-product-card h3 {
    font-size: 1.05rem;
    margin: 0 0 10px;
    color: var(--c-navy);
}
.seo-product-card p {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.65;
    margin: 0 0 14px;
    flex: 1;
}
.link-arrow {
    font-size: 13px;
    font-weight: 600;
    color: var(--c-orange);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.seo-application-list {
    list-style: none;
    margin: 24px 0 0;
    padding: 0;
}
.seo-application-list li {
    padding: 14px 0 14px 28px;
    border-bottom: 1px solid var(--c-line);
    position: relative;
    color: var(--c-text);
}
.seo-application-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 22px;
    width: 14px;
    height: 2px;
    background: var(--c-orange);
}
.seo-application-list li:last-child { border-bottom: 0; }

.seo-steps {
    counter-reset: step;
    list-style: none;
    margin: 24px 0 18px;
    padding: 0;
}
.seo-steps li {
    counter-increment: step;
    padding: 14px 0 14px 56px;
    position: relative;
    color: var(--c-text);
    line-height: 1.75;
}
.seo-steps li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 14px;
    font-family: var(--f-display);
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    background: var(--c-orange);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.seo-whyus-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.seo-whyus-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    border: 1px solid var(--c-line);
    transition: all var(--t);
}
.seo-whyus-card:hover {
    border-color: var(--c-orange);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.seo-whyus-icon {
    font-family: var(--f-display);
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--c-navy), var(--c-navy-3));
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}
.seo-whyus-card h3 {
    font-size: 1.05rem;
    margin: 0 0 8px;
    color: var(--c-navy);
}
.seo-whyus-card p {
    font-size: 14px;
    color: var(--c-text-light);
    line-height: 1.6;
    margin: 0;
}

.seo-mfg-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 40px;
}
.seo-mfg-grid > div {
    border-left: 2px solid var(--c-orange);
    padding-left: 18px;
}
.seo-mfg-grid strong {
    display: block;
    color: #fff;
    font-size: 1.05rem;
    margin-bottom: 6px;
    font-family: var(--f-display);
}
.seo-mfg-grid p {
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    line-height: 1.65;
    margin: 0;
}

/* =====================================================================
   Product Detail - Upgraded Sections
   ===================================================================== */
.product-content-grid {
    max-width: 1000px;
    margin: 0 auto;
}
.content-block {
    margin-bottom: 56px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--c-line);
}
.content-block:last-child { border-bottom: 0; }
.content-block .section-eyebrow { margin-bottom: 8px; }
.content-block-title {
    font-size: clamp(1.4rem, 2.5vw, 1.9rem);
    margin: 0 0 20px;
    color: var(--c-navy);
}
.content-block .rich-text {
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
}
.content-block .rich-text p { margin: 0 0 14px; }
.content-block .rich-text ul,
.content-block .rich-text ol { margin: 0 0 14px 22px; }
.content-block .rich-text li { margin-bottom: 6px; }

.feature-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 28px;
}
.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--c-text);
    line-height: 1.5;
}
.feature-check {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    background: var(--c-orange);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.feature-check svg { width: 13px; height: 13px; }

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 28px;
}
.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--c-bg-alt);
    border-radius: var(--radius);
    border-left: 3px solid var(--c-orange);
    font-size: 15px;
    color: var(--c-text);
    line-height: 1.5;
}
.advantage-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    color: var(--c-orange);
}
.advantage-icon svg { width: 100%; height: 100%; }

.specs-table.full {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.specs-table.full th,
.specs-table.full td {
    padding: 13px 18px;
    text-align: left;
    border-bottom: 1px solid var(--c-line);
    font-size: 14.5px;
}
.specs-table.full th {
    background: var(--c-navy);
    color: #fff;
    font-weight: 500;
    width: 38%;
    font-family: var(--f-body);
}
.specs-table.full tr:last-child th,
.specs-table.full tr:last-child td { border-bottom: 0; }
.specs-table.full tr:nth-child(even) td { background: var(--c-bg-alt); }

/* FAQ - accordion */
.faq-list {
    max-width: 100%;
    margin-top: 12px;
}
.faq-item {
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color var(--t);
}
.faq-item[open] { border-color: var(--c-orange); }
.faq-item summary {
    cursor: pointer;
    padding: 18px 22px;
    font-weight: 600;
    color: var(--c-navy);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    list-style: none;
    transition: background var(--t);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: var(--c-bg-alt); }
.faq-q { font-size: 15.5px; flex: 1; }
.faq-toggle {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    background: var(--c-bg-alt);
    color: var(--c-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    transition: transform var(--t), background var(--t);
}
.faq-item[open] .faq-toggle {
    transform: rotate(45deg);
    background: var(--c-orange);
    color: #fff;
}
.faq-a {
    padding: 0 22px 20px;
    color: var(--c-text-light);
    font-size: 14.5px;
    line-height: 1.7;
}

.product-trust {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--c-line);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    font-size: 13px;
    color: var(--c-text-light);
}
.product-trust strong { color: var(--c-navy); font-weight: 700; margin-right: 4px; }

/* =====================================================================
   Responsive - B2B Upgrade
   ===================================================================== */
@media (max-width: 1100px) {
    .industries-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid-6 { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .whyus-grid { grid-template-columns: repeat(2, 1fr); }
    .mfg-process { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    .seo-product-grid { grid-template-columns: repeat(2, 1fr); }
    .seo-whyus-grid { grid-template-columns: repeat(2, 1fr); }
    .seo-mfg-grid { grid-template-columns: repeat(2, 1fr); }
    .qc-grid { grid-template-columns: 1fr; gap: 32px; }
    .qc-image img { height: 360px; }
    .solutions-head { grid-template-columns: 1fr; gap: 20px; }
    .feature-list { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
    .industries-grid,
    .category-grid-6,
    .solutions-grid,
    .whyus-grid,
    .mfg-process,
    .certs-grid,
    .seo-product-grid,
    .seo-whyus-grid,
    .seo-mfg-grid { grid-template-columns: 1fr; }
    .qc-stats { grid-template-columns: 1fr; }
    .hero-trust { gap: 14px; font-size: 12px; }
    .final-cta-actions .btn { width: 100%; }
    .seo-hero { min-height: 60vh; padding: 100px 0 60px; }
    .seo-hero h1 { font-size: 1.9rem; }
    .seo-hero-sub { font-size: 1rem; }
    .product-trust { grid-template-columns: 1fr; }
    .content-block { margin-bottom: 36px; padding-bottom: 28px; }
    .faq-item summary { padding: 14px 16px; }
    .faq-a { padding: 0 16px 16px; }
    .engsupport-grid { grid-template-columns: 1fr; }
    .trust-stats-grid { grid-template-columns: 1fr; }
    .trust-stat-row { grid-template-columns: repeat(2, 1fr); }
    .mid-cta-inner { flex-direction: column; align-items: stretch; text-align: center; }
    .mid-cta-actions .btn { width: 100%; }
    .hero-trust-line { font-size: 0.95rem; }
}

/* ============================================================ */
/* B2B Upgrade v2: Hero trust line, Engineering Support,
   Mid-page CTA, Trust & Production, Solution v2 cards
   ============================================================ */

/* Hero trust line - sits between subtitle and CTA */
.hero-trust-line {
    color: rgba(255, 255, 255, 0.88);
    font-size: 1.02rem;
    font-weight: 500;
    margin: 0 0 24px;
    letter-spacing: 0.01em;
}
.hero-trust-line::before {
    content: "";
    display: inline-block;
    width: 28px;
    height: 2px;
    background: var(--c-orange);
    vertical-align: middle;
    margin-right: 12px;
    margin-bottom: 3px;
}

/* ------------------ Section: Engineering Support ------------------ */
.section-eng-support {
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}
.engsupport-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}
.engsupport-card {
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all var(--t);
    text-align: left;
}
.engsupport-card:hover {
    border-color: var(--c-orange);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.engsupport-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 107, 26, 0.12) 0%, rgba(255, 138, 76, 0.18) 100%);
    color: var(--c-orange);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.engsupport-title {
    font-size: 1.1rem;
    color: var(--c-navy);
    margin: 0 0 10px;
    font-weight: 600;
}
.engsupport-desc {
    font-size: 14px;
    line-height: 1.65;
    color: var(--c-text-light);
    margin: 0;
}
.engsupport-cta {
    background: var(--c-navy);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.engsupport-cta p {
    color: #fff;
    font-size: 1.15rem;
    font-weight: 500;
    margin: 0;
}
.engsupport-cta .btn {
    flex-shrink: 0;
}

/* ------------------ Solution v2 cards (challenge + solution) ------------------ */
.solution-card-v2 {
    border-top: 3px solid var(--c-orange);
}
.solution-card-v2 .solution-card-desc + .solution-card-desc {
    margin-top: -8px;
    padding-top: 14px;
    border-top: 1px dashed var(--c-line);
}
.solution-card-solution {
    color: var(--c-text);
}
.solution-card-solution strong {
    color: var(--c-orange-dark);
}

/* ------------------ Section: Mid-page CTA ------------------ */
.section-mid-cta {
    background: linear-gradient(120deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
    padding: 64px 0;
}
.mid-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.mid-cta-text {
    flex: 1;
    min-width: 280px;
}
.mid-cta-text .section-eyebrow {
    color: var(--c-orange-2);
    margin-bottom: 10px;
}
.mid-cta-text h2 {
    color: #fff;
    font-size: 1.85rem;
    font-family: var(--f-display);
    font-weight: 600;
    margin: 0 0 12px;
    line-height: 1.25;
}
.mid-cta-text p {
    color: rgba(255, 255, 255, 0.82);
    font-size: 1rem;
    line-height: 1.7;
    margin: 0;
    max-width: 640px;
}
.mid-cta-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
}

/* ------------------ Section: Trust & Production ------------------ */
.section-trust {
    background: var(--c-bg-alt);
}
.trust-scenarios {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 56px;
}
.scenario-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: all var(--t);
}
.scenario-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}
.scenario-marker {
    font-family: var(--f-display);
    font-size: 64px;
    line-height: 0.7;
    color: var(--c-orange);
    opacity: 0.25;
    position: absolute;
    top: 24px;
    right: 28px;
}
.scenario-text {
    color: var(--c-text);
    font-size: 14px;
    line-height: 1.7;
    margin: 0 0 18px;
    position: relative;
    z-index: 1;
}
.scenario-author {
    color: var(--c-navy);
    font-weight: 600;
    font-size: 13px;
    margin: 0;
    padding-top: 14px;
    border-top: 2px solid var(--c-orange);
    display: inline-block;
}

/* Trust stats grid (export markets + production strength) */
.trust-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
    align-items: start;
}
.trust-stats-block {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
}
.trust-block-title {
    font-size: 1.15rem;
    color: var(--c-navy);
    margin: 0 0 18px;
    font-weight: 600;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-orange);
    display: inline-block;
}
.trust-market-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.trust-market-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--c-line-2);
    color: var(--c-text-light);
    font-size: 14px;
    line-height: 1.5;
}
.trust-market-list li:last-child { border-bottom: none; }
.trust-market-list strong {
    color: var(--c-navy);
    font-weight: 600;
    margin-right: 6px;
}
.trust-stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 18px;
}
.trust-stat {
    text-align: center;
    padding: 16px 8px;
    background: var(--c-bg-alt);
    border-radius: var(--radius);
}
.trust-stat-value {
    display: block;
    font-family: var(--f-display);
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--c-orange);
    line-height: 1;
    margin-bottom: 6px;
}
.trust-stat-label {
    display: block;
    font-size: 12px;
    color: var(--c-text-light);
    font-weight: 500;
    line-height: 1.4;
}
.trust-block-note {
    font-size: 13px;
    color: var(--c-text-light);
    line-height: 1.6;
    margin: 0;
    padding-top: 14px;
    border-top: 1px solid var(--c-line);
}

/* ------------------ Responsive: Engineering Support, Trust, Mid-CTA ------------------ */
@media (max-width: 1100px) {
    .engsupport-grid { grid-template-columns: repeat(2, 1fr); }
    .trust-scenarios { grid-template-columns: 1fr 1fr; }
    .trust-stats-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
    .mid-cta-inner { flex-direction: column; align-items: stretch; text-align: center; }
    .mid-cta-actions { flex-direction: row; justify-content: center; flex-wrap: wrap; }
    .mid-cta-actions .btn { width: auto; }
    .category-layout { grid-template-columns: 1fr; }
    .category-main-list { position: static; }
    .category-sub-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
    .engsupport-grid { grid-template-columns: 1fr; }
    .trust-scenarios { grid-template-columns: 1fr; }
    .trust-stat-row { grid-template-columns: repeat(2, 1fr); }
    .mid-cta-actions { flex-direction: column; }
    .mid-cta-actions .btn { width: 100%; }
    .engsupport-cta { flex-direction: column; text-align: center; }
    .mid-cta-text h2 { font-size: 1.5rem; }
}