/* ULT Freezer Systems - Institutional Engineering Grade
   Reference: Thermo Fisher, Waters, Agilent aesthetic
   Dense data, sharp edges, technical document feel */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /*
     * COLOR SYSTEM - Optimized for institutional laboratory buyers
     *
     * Psychology: Trust, precision, scientific credibility, "cold" association
     * Reference: Thermo Fisher, Eppendorf, PHC aesthetic
     */

    /* Primary Navy - Deep trust, institutional gravitas */
    --navy-950: #0a1221;
    --navy-900: #0c1a2e;
    --navy-800: #1a2d47;
    --navy-700: #2a4365;
    --navy-600: #3d5a80;

    /* Neutral Gray - Clean, clinical, precise */
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f8fafc;

    /* Action - Cold scientific blue (cyan-shifted for "freezer" association) */
    --action: #0077b6;
    --action-hover: #005f8a;
    --action-light: #e0f4ff;

    /* Status - Clinical teal-green (less saturated, more medical) */
    --success: #0f766e;
    --success-light: #ccfbf1;

    /* Alert - Clear warning without alarm anxiety */
    --error: #b91c1c;
    --error-light: #fef2f2;

    /* Surfaces */
    --white: #ffffff;
    --page-bg: #f8fafc;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --mono: 'SF Mono', ui-monospace, monospace;

    /* Temperature display - cold blue glow for -86°C readings */
    --temp-display: #7dd3fc;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--gray-800);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
    color: var(--navy-900);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.375rem; margin-bottom: 0.5rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

a {
    color: var(--action);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ============ HEADER ============ */
.site-header {
    background: var(--navy-900);
    border-bottom: 3px solid var(--action);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-mark {
    width: 28px;
    height: 28px;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--navy-900);
}

.logo-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    letter-spacing: -0.01em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.main-nav a {
    color: rgba(255,255,255,0.75);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
}

.main-nav a:hover {
    color: var(--white);
}

.nav-cta {
    background: var(--action) !important;
    color: var(--white) !important;
    padding: 0.5rem 1rem;
}

.nav-cta:hover {
    background: var(--action-hover) !important;
}

/* ============ HERO ============ */
.hero {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: 2.5rem 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 3rem;
    align-items: start;
}

.product-label {
    display: inline-block;
    background: var(--navy-800);
    color: var(--white);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.25rem 0.5rem;
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-size: 1.75rem;
    line-height: 1.25;
    margin-bottom: 0.875rem;
}

.hero-subtitle {
    font-size: 1.0625rem;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    max-width: 540px;
}

.key-specs {
    display: flex;
    gap: 2rem;
    padding: 1rem 0;
    border-top: 1px solid var(--gray-300);
    border-bottom: 1px solid var(--gray-300);
    margin-bottom: 1.5rem;
}

.key-spec {
    display: flex;
    flex-direction: column;
}

.key-spec-value {
    font-family: var(--mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--navy-900);
}

.key-spec-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
}

.hero-cta-note {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: 0.625rem;
}

.btn-primary {
    display: inline-block;
    background: var(--action);
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 0.625rem 1.25rem;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--action-hover);
    text-decoration: none;
}

.btn-outline {
    display: inline-block;
    background: var(--white);
    color: var(--gray-700);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border: 1px solid var(--gray-300);
    cursor: pointer;
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    text-decoration: none;
}

/* Hero Product Box */
.hero-product {
    background: var(--white);
    border: 1px solid var(--gray-300);
}

.product-image {
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--gray-100) 100%);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--gray-200);
}

.product-image img {
    max-width: 100%;
    max-height: 220px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.product-summary {
    padding: 1rem;
}

.product-summary-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: 0.5rem;
}

.product-summary-specs {
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ============ SECONDARY NAV / TRUST BAR ============ */
.trust-bar {
    background: var(--navy-800);
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--navy-700);
}

.trust-items {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.85);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.trust-item::before {
    content: '✓';
    color: #2dd4bf;
    font-weight: 700;
    font-size: 0.875rem;
}

/* ============ SECTIONS ============ */
.section {
    padding: 2.5rem 0;
}

.section-alt {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.section-dark {
    background: var(--navy-900);
    color: var(--white);
}

.section-header {
    margin-bottom: 1.5rem;
}

.section-header h2 {
    margin-bottom: 0.25rem;
}

.section-header p {
    color: var(--gray-600);
    font-size: 0.9375rem;
}

/* ============ REDUNDANCY EXPLANATION ============ */
.redundancy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.redundancy-text h2 {
    margin-bottom: 0.75rem;
}

.redundancy-text > p {
    color: var(--gray-600);
    margin-bottom: 1.25rem;
}

.redundancy-steps {
    counter-reset: step;
}

.redundancy-step {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.redundancy-step:last-child {
    border-bottom: none;
}

.redundancy-step::before {
    counter-increment: step;
    content: counter(step);
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--navy-800);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-text strong {
    display: block;
    font-size: 0.9375rem;
    color: var(--navy-900);
    margin-bottom: 0.125rem;
}

.step-text span {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* Redundancy Table */
.redundancy-table-wrap {
    background: var(--white);
    border: 1px solid var(--gray-300);
    overflow-x: auto;
}

.redundancy-table-header {
    background: var(--navy-800);
    color: var(--white);
    padding: 0.625rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.redundancy-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.redundancy-table th,
.redundancy-table td {
    padding: 0.625rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.redundancy-table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.75rem;
    text-transform: uppercase;
}

.redundancy-table td:last-child {
    font-family: var(--mono);
    font-weight: 600;
    color: var(--navy-900);
}

.status-ok {
    color: #0d9488;
    font-weight: 600;
}

/* ============ MODELS TABLE ============ */
.models-table-wrap {
    border: 1px solid var(--gray-300);
    background: var(--white);
    overflow-x: auto;
}

.models-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.models-table th,
.models-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.models-table thead {
    background: var(--navy-800);
}

.models-table th {
    color: var(--white);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.models-table th:not(:first-child) {
    text-align: center;
}

.models-table td:not(:first-child) {
    text-align: center;
}

.models-table td:first-child {
    color: var(--gray-600);
}

.models-table tbody tr:hover {
    background: var(--gray-50);
}

.models-table .model-name {
    font-family: var(--mono);
    font-weight: 700;
    color: var(--navy-900);
    font-size: 1rem;
}

.models-table .popular-tag {
    display: inline-block;
    background: #0d9488;
    color: var(--white);
    font-size: 0.5625rem;
    font-weight: 700;
    padding: 0.1875rem 0.5rem;
    margin-left: 0.5rem;
    text-transform: uppercase;
    vertical-align: middle;
    letter-spacing: 0.03em;
}

.models-table .popular-col {
    background: #1a3a5c;
}

.models-table tbody td:nth-child(4) {
    background: rgba(13, 148, 136, 0.04);
}

.models-table tbody tr:hover td:nth-child(4) {
    background: rgba(13, 148, 136, 0.08);
}

.models-table tfoot td {
    background: var(--gray-50);
    font-size: 0.8125rem;
    color: var(--gray-600);
}

/* ============ FULL SPECS ============ */
.specs-table-wrap {
    border: 1px solid var(--gray-300);
    background: var(--white);
    overflow-x: auto;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.specs-table th,
.specs-table td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.specs-table thead {
    background: var(--navy-800);
}

.specs-table th {
    color: var(--white);
    font-weight: 600;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.specs-table th:not(:first-child) {
    text-align: center;
    min-width: 90px;
}

.specs-table td:not(:first-child) {
    text-align: center;
    font-family: var(--mono);
    font-size: 0.8125rem;
}

.specs-table .section-row {
    background: var(--gray-100);
}

.specs-table .section-row td {
    font-weight: 600;
    color: var(--navy-800);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0.75rem;
}

.specs-table tbody tr:hover:not(.section-row) {
    background: var(--gray-50);
}

/* ============ SAFETY / ALARMS ============ */
.safety-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.safety-block {
    background: var(--white);
    border: 1px solid var(--gray-300);
}

.safety-block-header {
    background: var(--navy-800);
    color: var(--white);
    padding: 0.625rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.safety-block-content {
    padding: 1rem;
}

.alarm-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.25rem 1rem;
}

.alarm-item {
    font-size: 0.8125rem;
    color: var(--gray-700);
    padding: 0.375rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alarm-item::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--action);
}

.protection-list {
    list-style: none;
}

.protection-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.875rem;
}

.protection-list li:last-child {
    border-bottom: none;
}

.protection-list strong {
    color: var(--navy-800);
}

.protection-list span {
    display: block;
    color: var(--gray-600);
    font-size: 0.8125rem;
    margin-top: 0.125rem;
}

/* ============ APPLICATIONS ============ */
.applications-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.application-item {
    background: var(--white);
    border: 1px solid var(--gray-300);
    padding: 1rem;
}

.application-item h4 {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.application-item p {
    font-size: 0.75rem;
    color: var(--gray-600);
    line-height: 1.5;
    margin: 0;
}

.compliance-note {
    background: var(--gray-100);
    border-left: 3px solid var(--gray-400);
    padding: 0.75rem 1rem;
    font-size: 0.8125rem;
    color: var(--gray-700);
}

/* ============ FEATURES ============ */
.features-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.feature-item {
    background: var(--white);
    border: 1px solid var(--gray-300);
    padding: 1rem;
}

.feature-item strong {
    display: block;
    font-size: 0.875rem;
    color: var(--navy-800);
    margin-bottom: 0.25rem;
}

.feature-item p {
    font-size: 0.8125rem;
    color: var(--gray-600);
    margin: 0;
    line-height: 1.5;
}

/* ============ CERTIFICATIONS ============ */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.cert-block {
    display: flex;
    gap: 1rem;
    background: var(--white);
    border: 1px solid var(--gray-300);
    padding: 1.25rem;
}

.cert-mark {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--navy-800);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    line-height: 1.2;
}

.cert-info strong {
    display: block;
    font-size: 0.9375rem;
    color: var(--navy-800);
    margin-bottom: 0.25rem;
}

.cert-info span {
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.5;
}

/* ============ DELIVERY BAR ============ */
.delivery-bar {
    background: var(--navy-900);
    padding: 1.5rem 0;
}

.delivery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.delivery-item h4 {
    color: var(--white);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.delivery-item p {
    color: rgba(255,255,255,0.6);
    font-size: 0.8125rem;
    margin: 0;
    line-height: 1.5;
}

/* ============ QUOTE FORM ============ */
.quote-section {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: 2.5rem 0;
}

.quote-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.quote-info h2 {
    margin-bottom: 0.5rem;
}

.quote-info > p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.quote-includes {
    background: var(--white);
    border: 1px solid var(--gray-300);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.quote-includes h4 {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.quote-includes ul {
    list-style: none;
    font-size: 0.8125rem;
    color: var(--gray-700);
}

.quote-includes li {
    padding: 0.25rem 0;
    padding-left: 1rem;
    position: relative;
}

.quote-includes li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--gray-400);
}

.quote-contact {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.quote-contact a {
    font-weight: 600;
}

/* Form */
.quote-form-wrap {
    background: var(--white);
    border: 1px solid var(--gray-300);
    padding: 1.5rem;
}

.form-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.75rem;
}

.form-time-indicator {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
}

.quote-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.25rem;
}

.required {
    color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: var(--font);
    font-size: 0.9375rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    color: var(--gray-900);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--action);
}

.form-group input.error,
.form-group select.error {
    border-color: var(--error);
    background: var(--error-light);
}

.error-message {
    font-size: 0.75rem;
    color: var(--error);
    margin-top: 0.25rem;
    min-height: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 70px;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M3 5l3 3 3-3'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

.btn-submit {
    margin-top: 0.5rem;
    padding: 0.75rem;
    font-size: 0.9375rem;
}

.form-disclaimer {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-align: center;
    margin: 0.5rem 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
}

.secure-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%236b7280'%3E%3Cpath d='M12 1C8.676 1 6 3.676 6 7v2H4v14h16V9h-2V7c0-3.324-2.676-6-6-6zm0 2c2.276 0 4 1.724 4 4v2H8V7c0-2.276 1.724-4 4-4z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    flex-shrink: 0;
}

/* Form Success */
.form-success {
    text-align: center;
    padding: 2rem 1rem;
}

.form-success.hidden {
    display: none;
}

.success-check {
    width: 48px;
    height: 48px;
    background: var(--success-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--success);
    font-size: 1.5rem;
}

.form-success h3 {
    color: var(--success);
    margin-bottom: 0.5rem;
}

.form-success p {
    color: var(--gray-600);
    font-size: 0.9375rem;
}

/* ============ FOOTER ============ */
.site-footer {
    background: var(--navy-900);
    color: rgba(255,255,255,0.5);
    padding: 2rem 0 1rem;
    border-top: 3px solid var(--action);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: var(--white);
    display: block;
    margin-bottom: 0.25rem;
}

.footer-brand p {
    font-size: 0.8125rem;
    max-width: 280px;
    margin: 0;
}

.footer-contact {
    text-align: right;
    font-size: 0.8125rem;
}

.footer-contact p {
    margin: 0 0 0.25rem;
}

.footer-contact a {
    color: rgba(255,255,255,0.7);
}

.footer-legal {
    font-size: 0.6875rem;
    line-height: 1.6;
    color: rgba(255,255,255,0.35);
}

.footer-legal p {
    margin: 0 0 0.25rem;
}

/* ============ RESPONSIVE ============ */

/* Tablet */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .hero-product {
        max-width: 100%;
        display: grid;
        grid-template-columns: 200px 1fr;
    }

    .product-image {
        padding: 1rem;
        border-bottom: none;
        border-right: 1px solid var(--gray-200);
    }

    .product-image img {
        max-height: 160px;
    }

    .redundancy-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .applications-list {
        grid-template-columns: repeat(3, 1fr);
    }

    .delivery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

/* Mobile */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 1rem;
    }

    .section {
        padding: 2rem 0;
    }

    /* Header */
    .header-inner {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0.75rem 0;
    }

    .main-nav {
        width: 100%;
        justify-content: space-between;
        gap: 0;
    }

    .main-nav a {
        font-size: 0.8125rem;
        padding: 0.5rem;
    }

    .nav-cta {
        padding: 0.5rem 0.75rem !important;
    }

    /* Trust bar */
    .trust-bar {
        padding: 0.75rem 0;
    }

    .trust-items {
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 0.5rem 1rem;
    }

    .trust-item {
        font-size: 0.75rem;
    }

    /* Hero */
    .hero {
        padding: 1.5rem 0;
    }

    .hero h1 {
        font-size: 1.5rem;
        line-height: 1.3;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
    }

    .key-specs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
        padding: 1rem 0;
    }

    .key-spec-value {
        font-size: 1.125rem;
    }

    .key-spec-label {
        font-size: 0.6875rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn-primary,
    .btn-outline {
        width: 100%;
        text-align: center;
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }

    .hero-product {
        display: none;
    }

    /* Section headers */
    .section-header {
        margin-bottom: 1.25rem;
    }

    .section-header h2 {
        font-size: 1.25rem;
    }

    .section-header p {
        font-size: 0.875rem;
    }

    /* Redundancy */
    .redundancy-step {
        padding: 0.625rem 0;
    }

    .redundancy-step::before {
        width: 20px;
        height: 20px;
        font-size: 0.6875rem;
    }

    .step-text strong {
        font-size: 0.875rem;
    }

    .step-text span {
        font-size: 0.8125rem;
    }

    /* Tables - horizontal scroll */
    .models-table-wrap,
    .specs-table-wrap,
    .redundancy-table-wrap {
        margin: 0 -1rem;
        border-left: none;
        border-right: none;
        border-radius: 0;
    }

    .models-table,
    .specs-table,
    .redundancy-table {
        font-size: 0.75rem;
    }

    .models-table th,
    .models-table td,
    .specs-table th,
    .specs-table td {
        padding: 0.5rem 0.625rem;
        white-space: nowrap;
    }

    .models-table th:first-child,
    .models-table td:first-child,
    .specs-table th:first-child,
    .specs-table td:first-child {
        position: sticky;
        left: 0;
        background: var(--white);
        z-index: 1;
        border-right: 1px solid var(--gray-200);
    }

    .models-table thead th:first-child,
    .specs-table thead th:first-child {
        background: var(--navy-800);
    }

    .specs-table .section-row td {
        position: sticky;
        left: 0;
        right: 0;
        background: var(--gray-100);
        z-index: 2;
        width: calc(100vw - 2rem);
        min-width: calc(100vw - 2rem);
        max-width: calc(100vw - 2rem);
        white-space: normal;
        clip: rect(auto, auto, auto, auto);
    }

    .models-table .model-name {
        font-size: 0.875rem;
    }

    .models-table .popular-tag {
        display: none;
    }

    .models-table tfoot td {
        position: sticky;
        left: 0;
        right: 0;
        width: calc(100vw - 2rem);
        min-width: calc(100vw - 2rem);
        max-width: calc(100vw - 2rem);
        font-size: 0.6875rem;
        white-space: normal;
        padding: 0.75rem;
        line-height: 1.5;
        z-index: 2;
        background: var(--gray-50);
    }

    /* Safety */
    .safety-block-header {
        font-size: 0.6875rem;
        padding: 0.5rem 0.75rem;
    }

    .safety-block-content {
        padding: 0.75rem;
    }

    .alarm-list {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .alarm-item {
        font-size: 0.75rem;
        padding: 0.25rem 0;
    }

    .protection-list li {
        padding: 0.5rem 0;
        font-size: 0.8125rem;
    }

    .protection-list span {
        font-size: 0.75rem;
    }

    /* Applications */
    .applications-list {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .application-item {
        padding: 0.75rem;
    }

    .application-item h4 {
        font-size: 0.8125rem;
    }

    .application-item p {
        font-size: 0.6875rem;
    }

    .compliance-note {
        font-size: 0.75rem;
        padding: 0.625rem 0.75rem;
    }

    /* Features */
    .features-list {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .feature-item {
        padding: 0.75rem;
    }

    .feature-item strong {
        font-size: 0.8125rem;
    }

    .feature-item p {
        font-size: 0.75rem;
    }

    /* Certs */
    .cert-block {
        padding: 1rem;
    }

    .cert-mark {
        width: 48px;
        height: 48px;
        font-size: 0.6875rem;
    }

    .cert-info strong {
        font-size: 0.875rem;
    }

    .cert-info span {
        font-size: 0.75rem;
    }

    /* Delivery */
    .delivery-bar {
        padding: 1.25rem 0;
    }

    .delivery-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .delivery-item h4 {
        font-size: 0.8125rem;
    }

    .delivery-item p {
        font-size: 0.75rem;
    }

    /* Quote form */
    .quote-section {
        padding: 2rem 0;
    }

    .quote-info h2 {
        font-size: 1.25rem;
    }

    .quote-info > p {
        font-size: 0.875rem;
    }

    .quote-includes {
        padding: 0.875rem;
    }

    .quote-includes h4 {
        font-size: 0.8125rem;
    }

    .quote-includes li {
        font-size: 0.75rem;
    }

    .quote-form-wrap {
        padding: 1.25rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .form-group label {
        font-size: 0.75rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 1rem;
        padding: 0.75rem;
    }

    .btn-submit {
        padding: 1rem;
        font-size: 1rem;
    }

    .form-disclaimer {
        font-size: 0.6875rem;
    }

    /* Footer */
    .site-footer {
        padding: 1.5rem 0 1rem;
    }

    .footer-main {
        flex-direction: column;
        gap: 1rem;
        padding-bottom: 1rem;
    }

    .footer-brand .logo-text {
        font-size: 0.9375rem;
    }

    .footer-brand p {
        font-size: 0.75rem;
    }

    .footer-contact {
        text-align: left;
        font-size: 0.75rem;
    }

    .footer-legal {
        font-size: 0.625rem;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 0.875rem;
    }

    .hero h1 {
        font-size: 1.375rem;
    }

    .key-specs {
        grid-template-columns: 1fr 1fr;
    }

    .applications-list {
        grid-template-columns: 1fr;
    }

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

    .trust-items {
        justify-content: center;
        text-align: center;
    }
}

/* Ensure tables scroll */
.models-table-wrap,
.specs-table-wrap {
    -webkit-overflow-scrolling: touch;
}

/* Touch-friendly tap targets */
@media (hover: none) and (pointer: coarse) {
    .main-nav a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        min-height: 48px;
    }

    .btn-primary,
    .btn-outline,
    .btn-submit {
        min-height: 48px;
    }
}

/* iOS safe areas */
@supports (padding: env(safe-area-inset-bottom)) {
    .site-footer {
        padding-bottom: calc(1rem + env(safe-area-inset-bottom));
    }

    .quote-form-wrap {
        padding-bottom: calc(1.5rem + env(safe-area-inset-bottom));
    }
}

/* Prevent iOS zoom on input focus */
@media (max-width: 768px) {
    input[type="text"],
    input[type="email"],
    select,
    textarea {
        font-size: 16px !important;
    }
}

/* ============ STICKY CTA ============ */
.sticky-cta {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--action);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.875rem 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 119, 182, 0.35);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(1rem);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}

.sticky-cta:hover {
    background: var(--action-hover);
    text-decoration: none;
    transform: translateY(0) scale(1.02);
}

.sticky-cta.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .sticky-cta {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        text-align: center;
        padding: 1rem;
    }
}

/* Print */
@media print {
    .site-header,
    .trust-bar,
    .quote-section,
    .site-footer,
    .sticky-cta {
        display: none;
    }

    body {
        font-size: 10pt;
        color: #000;
    }

    .section {
        padding: 1rem 0;
    }
}