/*
Theme Name: RaySensing
Theme URI: https://ray-sensor.com
Author: RaySensing Team
Description: A professional WordPress theme for fiber optic sensing technology company
Version: 1.0.1
License: GNU General Public License v2 or later
Text Domain: ray-sensor
*/

/* ========================================
   CSS Variables
   ======================================== */
:root {
    --primary-color: #0066CC;
    --primary-dark: #0052A3;
    --primary-light: #4D94DB;
    --secondary-color: #00BFFF;
    --accent-color: #00CED1;
    --text-dark: #1A1A1A;
    --text-medium: #4A4A4A;
    --text-light: #6A6A6A;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-color: #E0E0E0;
    --success-color: #28A745;
    --warning-color: #FFC107;
    --error-color: #DC3545;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Sticky header compensation - prevent content from hiding behind the fixed nav */
.site-main {
    padding-top: 70px;
}

@media (max-width: 680px) {
    .site-main {
        padding-top: 60px;
    }
}

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

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

a:hover {
    color: var(--primary-dark);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

h1 { font-size: 2.75rem; font-weight: 400; line-height: 1.3; letter-spacing: -0.01em; }
h2 { font-size: 2rem; font-weight: 400; }
h3 { font-size: 1.5rem; font-weight: 500; }
h4 { font-size: 1.25rem; font-weight: 500; }
h5 { font-size: 1.125rem; font-weight: 500; }
h6 { font-size: 1rem; font-weight: 500; }

p {
    margin-bottom: 1rem;
}

ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1.5rem;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.75rem;
}

.col {
    flex: 1;
    padding: 0 0.75rem;
}

.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* ========================================
   Top Bar
   ======================================== */
.top-bar {
    background-color: var(--primary-dark);
    color: var(--bg-white);
    font-size: 0.85rem;
    padding: 0.5rem 0;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-info {
    display: flex;
    gap: 1.5rem;
}

.top-bar-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.9;
}

.top-bar-links {
    display: flex;
    gap: 1.5rem;
}

.top-bar-links a {
    color: var(--bg-white);
    opacity: 0.9;
    transition: var(--transition);
}

.top-bar-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    position: relative;
}

/* Logo - Fixed to the left */
.site-logo {
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.site-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.site-logo img {
    max-height: 60px;
    width: auto;
    object-fit: cover;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.logo-highlight {
    color: var(--primary-color);
}

/* Navigation - Centered with flexbox */
.primary-navigation {
    display: flex;
    align-items: center;
    margin: 0 auto;
}

.primary-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
}

.primary-menu > li {
    position: relative;
}

.primary-menu > li > a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 1.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.95rem;
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.primary-menu > li > a:hover {
    color: var(--primary-color);
    background-color: var(--bg-light);
}

.dropdown-arrow {
    font-size: 0.6rem;
    opacity: 0.6;
    transition: var(--transition);
}

.primary-menu > li:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.primary-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    min-width: 240px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    list-style: none;
    border: 1px solid var(--border-color);
    margin-top: 0.5rem;
}

.primary-menu > li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.primary-menu .sub-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 2rem;
    width: 12px;
    height: 12px;
    background-color: var(--bg-white);
    border-left: 1px solid var(--border-color);
    border-top: 1px solid var(--border-color);
    transform: rotate(45deg);
}

.primary-menu .sub-menu li {
    margin: 0;
}

.primary-menu .sub-menu a {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    color: var(--text-medium);
    display: block;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.primary-menu .sub-menu a:hover {
    color: var(--primary-color);
    background-color: var(--bg-light);
    padding-left: 1.25rem;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-actions .btn {
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
}

.header-actions .btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.header-actions .btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: var(--bg-white);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--text-dark);
    transition: var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    color: var(--bg-white);
    padding: 8.3rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    color: var(--bg-white);
    line-height: 1.3;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    letter-spacing: -0.01em;
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    font-weight: 300;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-buttons .btn-primary {
    background-color: var(--bg-white);
    color: var(--primary-color);
}

.hero-buttons .btn-primary:hover {
    background-color: var(--bg-light);
}

.hero-buttons .btn-secondary {
    border-color: var(--bg-white);
    color: var(--bg-white);
}

.hero-buttons .btn-secondary:hover {
    background-color: var(--bg-white);
    color: var(--primary-color);
}

/* ========================================
   Section Styles
   ======================================== */
.section {
    padding: 5rem 0;
}

.section + .section {
    padding-top: 4rem;
}

.section-light {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-medium);
    margin-bottom: 0;
}

/* ========================================
   Product Grid
   ======================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.product-card-image {
    aspect-ratio: 4/3;
    overflow: hidden;
}

.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-card-image img {
    transform: scale(1.05);
}

.product-card-content {
    padding: 1.5rem;
}

.product-card-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.product-card-title a {
    color: var(--text-dark);
}

.product-card-title a:hover {
    color: var(--primary-color);
}

.product-card-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.product-card-link {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.product-card-link::after {
    content: '→';
    transition: var(--transition);
}

.product-card-link:hover::after {
    transform: translateX(4px);
}

/* ========================================
   Solution Cards
   ======================================== */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.solution-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.solution-card:hover {
    box-shadow: var(--shadow-md);
}

.solution-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.solution-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.solution-card:hover .solution-card-image img {
    transform: scale(1.05);
}

.solution-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    color: var(--bg-white);
}

.solution-card-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--bg-white);
}

.solution-card-excerpt {
    opacity: 0.9;
    margin-bottom: 1rem;
}

/* ========================================
   Features Grid
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
}

.feature-item {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.section-light .feature-item {
    background: var(--bg-white);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--bg-white);
    box-shadow: var(--shadow-sm);
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: var(--text-light);
    margin-bottom: 0;
}

/* ========================================
   Stats Section
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-medium);
    font-size: 1rem;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    position: relative;
    background: linear-gradient(135deg, #0A1A2F 0%, #0D1F3F 50%, #0f2240 100%);
    color: #ffffff;
    padding: 80px 0 40px;
    text-align: center;
    overflow: hidden;
}

.cta-section h2 {
    font-size: 36px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 16px;
    line-height: 1.25;
}

.cta-section p {
    font-size: 18px;
    color: #B0D4FF;
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.cta-section .btn-white {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #ffffff;
    color: #0A1A2F;
    padding: 16px 32px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-section .btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

/* Trust badges inside CTA bottom */
.cta-trust-badges {
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: 60px;
    padding: 32px 0 36px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 48px;
}

.cta-trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #7EABE8;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.cta-trust-badge .badge-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 8px;
    background: rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

/* UW-FBG optical signal bridge between CTA and footer */
.cta-to-footer-bridge {
    height: 40px;
    background: #0f2240;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    position: relative;
}

/* Core fiber line */
.cta-to-footer-bridge::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(59,130,246,0.08) 10%,
        rgba(59,130,246,0.25) 30%,
        rgba(147,197,253,0.4) 50%,
        rgba(59,130,246,0.25) 70%,
        rgba(59,130,246,0.08) 90%,
        transparent 100%
    );
}

/* Cladding glow */
.cta-to-footer-bridge::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 3px;
    transform: translateY(-50%);
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(59,130,246,0.02) 15%,
        rgba(59,130,246,0.08) 35%,
        rgba(147,197,253,0.12) 50%,
        rgba(59,130,246,0.08) 65%,
        rgba(59,130,246,0.02) 85%,
        transparent 100%
    );
    filter: blur(3px);
}

/* Light pulses traveling along the fiber */
.cta-to-footer-bridge .bridge-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #60a5fa;
    position: relative;
    z-index: 1;
    animation: pulseTravel 2.5s ease-in-out infinite;
}

.cta-to-footer-bridge .bridge-dot:nth-child(1) { animation-delay: 0s; }
.cta-to-footer-bridge .bridge-dot:nth-child(2) { animation-delay: 0.3s; }
.cta-to-footer-bridge .bridge-dot:nth-child(3) { animation-delay: 0.6s; }
.cta-to-footer-bridge .bridge-dot:nth-child(4) { animation-delay: 0.9s; }
.cta-to-footer-bridge .bridge-dot:nth-child(5) { animation-delay: 1.2s; }

/* Light reflection halo */
.cta-to-footer-bridge .bridge-dot::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(96,165,250,0.4) 0%, transparent 70%);
    animation: reflectionGlow 2.5s ease-in-out infinite;
}

.cta-to-footer-bridge .bridge-dot:nth-child(1)::after { animation-delay: 0s; }
.cta-to-footer-bridge .bridge-dot:nth-child(2)::after { animation-delay: 0.3s; }
.cta-to-footer-bridge .bridge-dot:nth-child(3)::after { animation-delay: 0.6s; }
.cta-to-footer-bridge .bridge-dot:nth-child(4)::after { animation-delay: 0.9s; }
.cta-to-footer-bridge .bridge-dot:nth-child(5)::after { animation-delay: 1.2s; }

@keyframes pulseTravel {
    0% { opacity: 0.2; transform: scale(1); }
    25% { opacity: 1; transform: scale(1.6); }
    60% { opacity: 0.6; transform: scale(1.2); }
    100% { opacity: 0.2; transform: scale(1); }
}

@keyframes reflectionGlow {
    0% { opacity: 0; transform: scale(1); }
    25% { opacity: 1; transform: scale(1.3); }
    60% { opacity: 0.5; transform: scale(1.1); }
    100% { opacity: 0; transform: scale(1); }
}

@media (max-width: 768px) {
    .cta-section { padding: 60px 0 30px; }
    .cta-section h2 { font-size: 28px; }
    .cta-section p { font-size: 16px; }
    .cta-trust-badges { gap: 24px; padding: 24px 0 28px; }
    .cta-trust-badge { font-size: 13px; }
    .cta-to-footer-bridge { height: 30px; gap: 28px; }
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background-color: var(--text-dark);
    color: var(--bg-white);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-logo img {
    max-height: 40px;
    width: auto;
}

.footer-description {
    color: rgba(255,255,255,0.7);
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.footer-widget-title {
    font-size: 1.125rem;
    color: var(--bg-white);
    margin-bottom: 1.5rem;
}

.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-menu li {
    margin-bottom: 0.75rem;
}

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

.footer-menu a:hover {
    color: var(--bg-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

/* ========================================
   Footer Feature Tags (Floating Labels)
   ======================================== */
.footer-feature-tags {
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 1.5rem !important;
    padding: 1.5rem 2rem !important;
    background: linear-gradient(135deg, rgba(0,102,204,0.15) 0%, rgba(0,206,209,0.1) 100%);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    flex-wrap: wrap !important;
    flex-direction: row !important;
}

.feature-tag {
    display: inline-flex !important;
    align-items: center !important;
    padding: 0.75rem 1.5rem !important;
    background: rgba(59, 130, 246, 0.1) !important;
    border: 1px solid rgba(59, 130, 246, 0.3) !important;
    border-radius: 50px !important;
    color: #e2e8f0 !important;
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    animation: floatTag 3s ease-in-out infinite !important;
}

.feature-tag:nth-child(2) {
    animation-delay: 0.5s !important;
}

.feature-tag:nth-child(3) {
    animation-delay: 1s !important;
}

@keyframes floatTag {
    0%, 100% {
        transform: translateY(0);
        border-color: rgba(59, 130, 246, 0.3);
        background: rgba(59, 130, 246, 0.1);
    }
    50% {
        transform: translateY(-5px);
        border-color: rgba(0, 229, 255, 0.5);
        background: rgba(0, 229, 255, 0.08);
    }
}

.feature-tag:hover {
    background: rgba(59, 130, 246, 0.25) !important;
    border-color: rgba(0, 229, 255, 0.5) !important;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.tag-icon {
    display: none !important;
    font-size: 1.2rem;
}

.tag-text {
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    color: #e2e8f0 !important;
}

/* ========================================
   Footer Brand Title & Layout
   ======================================== */
.footer-brand-title {
    font-size: 1.4rem !important;
    font-weight: 600 !important;
    color: #ffffff !important;
    margin-bottom: 1rem;
    line-height: 1.4;
    letter-spacing: -0.01em;
    text-shadow: none !important;
}

.footer-brand .footer-description {
    color: rgba(255,255,255,0.75);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ========================================
   Footer Contact Button
   ======================================== */
.footer-contact-column {
    display: flex !important;
    align-items: flex-start !important;
    justify-content: center !important;
    padding-top: 0 !important;
}

.footer-contact-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 1.75rem !important;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%) !important;
    color: #ffffff !important;
    font-weight: 600 !important;
    font-size: 0.95rem !important;
    border-radius: 8px !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3) !important;
    text-decoration: none !important;
}

.footer-contact-btn:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4) !important;
}

.footer-contact-btn:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,102,204,0.4);
}

.footer-contact-btn .btn-icon {
    font-size: 1.1rem;
}

/* ========================================
   Footer Social Icons (Updated)
   ======================================== */
.footer-social {
    display: flex;
    gap: 0.85rem;
    margin-bottom: 1.5rem;
}

.footer-social a {
    width: 42px;
    height: 42px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.85);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,102,204,0.4);
}

/* ========================================
   Footer Grid Layout (Optimized)
   ======================================== */
.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
    align-items: start;
}

.footer-brand {
    max-width: 340px;
}

.footer-widget {
    padding-top: 0.25rem;
}

.footer-widget-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--bg-white);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.title-line {
    display: inline-block;
    width: 4px;
    height: 18px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-menu li {
    margin-bottom: 0.65rem;
}

.footer-menu a {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    position: relative;
    padding-left: 0;
    transition: var(--transition);
}

.footer-menu a::before {
    content: '›';
    position: absolute;
    left: -12px;
    opacity: 0;
    transition: var(--transition);
    color: var(--primary-color);
}

.footer-menu a:hover {
    color: var(--bg-white);
    padding-left: 12px;
}

.footer-menu a:hover::before {
    opacity: 1;
}

/* ========================================
   Footer Certifications (Refined)
   ======================================== */
.footer-certifications {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 1.75rem;
    margin-bottom: 2rem;
    text-align: center;
}

.cert-label {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.cert-badges {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.cert-badge {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    color: rgba(255,255,255,0.7);
    font-size: 0.8rem;
    font-weight: 500;
}

/* ========================================
   Footer Bottom (Refined)
   ======================================== */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.footer-divider {
    color: rgba(255,255,255,0.2);
}

.footer-link {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.footer-link:hover {
    color: var(--bg-white);
}

.location-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.location-dot {
    width: 8px;
    height: 8px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ========================================
   Product Detail Page Styles
   ======================================== */
.product-hero {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    color: var(--bg-white);
    padding: 6rem 0;
    margin-bottom: 0;
}

.product-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.product-hero-content {
    max-width: 100%;
    width: 100%;
}

.product-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--bg-white);
    line-height: 1.2;
}

.product-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.product-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.product-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.product-hero-image {
    text-align: center;
}

.product-hero-image img {
    max-width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Product Types Grid */
.product-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-type-card {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.product-type-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.product-type-content h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.product-type-content p {
    color: var(--text-medium);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.product-type-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.product-type-content ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-medium);
}

.product-type-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* Specs Columns */
.specs-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.specs-column {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.specs-column h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.specs-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.specs-column ul li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-medium);
}

.specs-column ul li:last-child {
    border-bottom: none;
}

/* Specs Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.specs-table thead {
    background: var(--primary-color);
    color: var(--bg-white);
}

.specs-table th,
.specs-table td {
    padding: 1.25rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.specs-table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.specs-table tbody tr:hover {
    background: var(--bg-light);
}

.specs-table tbody tr:last-child td {
    border-bottom: none;
}

/* Related Products */
.related-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.related-product-card {
    background: var(--bg-white);
    padding: 1.75rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.related-product-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.related-product-card h4 {
    margin-bottom: 0.5rem;
}

.related-product-card h4 a {
    color: var(--text-dark);
    font-size: 1.15rem;
}

.related-product-card h4 a:hover {
    color: var(--primary-color);
}

.related-product-card p {
    color: var(--text-light);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    color: var(--bg-white);
    padding: 4rem 0;
    text-align: center;
}

.page-title {
    font-size: 2.75rem;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--bg-white);
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.125rem;
    font-weight: 300;
    line-height: 1.6;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.product-category-card {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.product-category-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.product-category-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.product-category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-category-card:hover .product-category-image img {
    transform: scale(1.05);
}

.product-category-content {
    padding: 2rem;
}

.product-category-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.product-category-desc {
    color: var(--text-medium);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.product-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.product-features li {
    padding: 0.4rem 0;
    padding-left: 1.25rem;
    position: relative;
    color: var(--text-medium);
    font-size: 0.95rem;
}

.product-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ========================================
   Tech Page Hero - Basic Styles
   (Full styles with background images defined inline in each page)
   ======================================== */
.tech-page-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #081424 0%, #0A1A2F 45%, #12355D 100%);
    color: #ffffff;
    padding: 200px 0 300px;
    min-height: auto;
}

.tech-page-hero .hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.tech-page-hero .hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    animation: heroSlide 20s infinite;
}

@keyframes heroSlide {
    0% { opacity: 0; }
    8% { opacity: 1; }
    20% { opacity: 1; }
    28% { opacity: 0; }
    100% { opacity: 0; }
}

.tech-page-hero .hero-slider-overlay,
.products-hero-section .hero-slider-overlay,
.hero-section .hero-slider-overlay,
.tech-hero .hero-slider-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(8, 20, 36, 0.85) 0%, rgba(8, 20, 36, 0.40) 50%, rgba(8, 20, 36, 0.60) 100%);
    z-index: 1;
}

.tech-page-hero .hero-content {
    position: relative;
    z-index: 2;
    max-width: 100%;
    width: 100%;
    padding: 0 !important;
}

.tech-page-hero .hero-content h1 {
    font-size: 42px;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #ffffff;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    max-width: 100%;
}

.tech-page-hero .hero-subtitle {
    font-size: 18px;
    color: #93C5FD;
    margin-bottom: 30px;
    font-weight: 400;
    max-width: 600px;
}

.tech-page-hero .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.tech-page-hero .hero-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.tech-page-hero .btn-primary {
    background: #1098ea;
    color: #ffffff;
    border: none;
}

.tech-page-hero .btn-primary:hover {
    background: #0d8bd8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 152, 234, 0.3);
}

.tech-page-hero .btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.tech-page-hero .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 768px) {
    .tech-page-hero {
        padding: 120px 0 80px;
        min-height: auto;
    }
    .tech-page-hero .hero-content h1 {
        font-size: 32px;
    }
}

/* ========================================
   Responsive Styles
   ======================================== */

@media (max-width: 1024px) {
    .top-bar {
        display: none;
    }
    
    .header-inner {
        height: 62px;
    }
    
    .primary-navigation {
        display: none;
    }
    
    .header-actions {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .footer-contact-column {
        grid-column: 1 / -1;
        justify-content: flex-start;
    }

    .footer-brand {
        grid-column: 1 / -1;
        max-width: 100%;
    }

    .footer-feature-tags {
        gap: 1rem;
        padding: 1.25rem 1rem;
    }

    .feature-tag {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .logo-text {
        font-size: 1.5rem;
    }
    
    .primary-navigation {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--bg-white);
        box-shadow: var(--shadow-md);
        padding: 1rem;
        transform: translateX(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        display: flex;
        margin: 0;
        z-index: 999;
        overflow-y: auto;
    }
    
    .primary-navigation.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }
    
    .primary-menu {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }
    
    .primary-menu > li {
        border-bottom: 1px solid var(--border-color);
    }
    
    .primary-menu > li > a {
        padding: 1rem;
        justify-content: space-between;
    }
    
    .primary-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        display: none;
        margin-top: 0;
        padding: 0 0 0 1rem;
    }
    
    .primary-menu .sub-menu::before {
        display: none;
    }
    
    .primary-menu > li.active .sub-menu {
        display: block;
    }
    
    .dropdown-arrow {
        transform: rotate(-90deg);
    }
    
    .primary-menu > li.active .dropdown-arrow {
        transform: rotate(0deg);
    }
    
    .hero-title {
        font-size: 2.25rem;
        font-weight: 400;
        line-height: 1.3;
    }
    
    .section-title {
        font-size: 1.75rem;
        font-weight: 400;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-contact-column {
        padding-top: 0;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-brand-title {
        font-size: 1.15rem;
    }

    .footer-feature-tags {
        flex-direction: column;
        align-items: center;
        gap: 0.85rem;
        padding: 1.25rem 1rem;
    }

    .feature-tag {
        width: fit-content;
        font-size: 0.9rem;
        animation: none;
    }

    .footer-contact-btn {
        width: 100%;
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-bottom-left {
        justify-content: center;
    }

    .cert-badges {
        gap: 0.75rem;
    }

    .cert-badge {
        font-size: 0.75rem;
        padding: 0.4rem 0.75rem;
    }
    
    /* Product Detail Mobile Styles */
    .product-hero {
        padding: 3rem 0;
    }
    
    .product-hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-title {
        font-size: 2.25rem;
        font-weight: 400;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .product-actions .btn {
        width: 100%;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section + .section {
        padding-top: 2.5rem;
    }
    
    .features-grid {
        gap: 1.5rem;
    }
    
    .feature-item {
        padding: 1.5rem;
    }
    
    .product-types-grid {
        gap: 1.5rem;
    }
    
    .product-type-card {
        padding: 1.5rem;
    }
    
    .specs-columns {
        gap: 1.5rem;
    }
    
    .specs-column {
        padding: 1.5rem;
    }
    
    .specs-table th,
    .specs-table td {
        padding: 1rem;
        font-size: 0.9rem;
    }
    
    .cta-section {
        padding: 3rem 0;
    }
    
    .cta-title {
        font-size: 1.75rem;
        font-weight: 400;
    }
    
    .page-title {
        font-size: 2.25rem;
        font-weight: 400;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.25rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
        font-weight: 400;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ========================================
   Product 子页面：图片+文字排版修复
   - 图片列与文字列齐高，文字滚动时图片同步
   - 图片统一缩放，不超出边框
   ======================================== */
.product-display-wrap {
    align-items: stretch !important;
}

.product-img-viewer {
    position: relative !important;
    top: auto !important;
    height: 100%;
}

.product-img-main {
    aspect-ratio: 16/10 !important;
    margin-top: 60px !important;
}

.product-img-main img {
    object-fit: contain !important;
    background: transparent;
}

/* ========================================
   全站 Hero Section 统一 — 高度、字体、按钮
   ======================================== */
.products-hero-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #081424 0%, #0A1A2F 45%, #12355D 100%);
    color: #ffffff;
    padding: 200px 0 300px;
    min-height: auto;
}

.hero-section {
    padding: 200px 0 300px;
}

.tech-hero {
    padding: 200px 0 300px;
}

.about-hero,
.clients-hero,
.solution-hero,
.case-studies-hero {
    padding: 200px 0 300px;
}

.products-hero-section .products-hero-content,
.hero-section .hero-content,
.tech-hero .hero-content,
.about-hero,
.clients-hero,
.solution-hero,
.case-studies-hero {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.products-hero-section .products-hero-title,
.hero-section .hero-content h1,
.tech-hero .hero-content h1,
.about-hero h1,
.clients-hero h1,
.solution-hero h1,
.case-studies-hero h1 {
    font-size: 42px;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #ffffff;
}

.products-hero-section .hero-subtitle,
.hero-section .hero-subtitle,
.tech-hero .hero-subtitle,
.about-hero p,
.clients-hero p,
.solution-hero p,
.case-studies-hero p {
    font-size: 18px;
    color: #93C5FD;
    margin-bottom: 30px;
    font-weight: 400;
    max-width: 600px;
}

.products-hero-section .hero-actions .btn,
.hero-section .hero-actions .btn,
.tech-hero .hero-actions .btn,
.about-hero .btn,
.clients-hero .btn,
.solution-hero .btn,
.case-studies-hero .btn {
    border-radius: 8px;
    padding: 12px 28px;
    font-weight: 600;
    font-size: 15px;
}

@media (max-width: 768px) {
    .products-hero-section,
    .hero-section,
    .tech-hero,
    .about-hero,
    .clients-hero,
    .solution-hero,
    .case-studies-hero {
        padding: 120px 0 80px;
    }
    .products-hero-section .products-hero-title,
    .hero-section .hero-content h1,
    .tech-hero .hero-content h1,
    .about-hero h1,
    .clients-hero h1,
    .solution-hero h1,
    .case-studies-hero h1 {
        font-size: 32px;
    }
}

/* ========================================
   Product Models 缩略图 — 居中对齐 + 统一尺寸
   ======================================== */
.product-img-thumbs {
    display: flex !important;
    gap: 0.5rem !important;
    margin-top: 0.75rem !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
}

.product-img-thumb {
    width: 56px !important;
    height: 42px !important;
    border-radius: 6px !important;
    overflow: hidden !important;
    border: 2px solid transparent !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    background: #e0e0e0 !important;
    flex: 0 0 auto !important;
}

.product-img-thumb img {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    background: #e8edf2 !important;
}

.product-img-thumb.active { border-color: #1098ea !important; }
.product-img-thumb:hover { border-color: #0A1A2F !important; }

/* 主图区域 — 居中显示大图 */
.product-img-main {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

/* =====================================================
   Our Solutions for Your Company — Unified Image Cards
   ===================================================== */
.solutions-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.solution-card-img {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: all 0.4s ease;
    border: none;
}
.solution-card-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    transition: all 0.4s ease;
    filter: blur(0.5px);
    transform: scale(1.01);
}
.solution-card-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 30%, rgba(0,0,0,0.2) 60%, rgba(0,0,0,0.1) 100%);
    transition: all 0.4s ease;
}
.solution-card-content {
    position: relative;
    z-index: 2;
    transition: all 0.4s ease;
}
.solution-card-content h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 0;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
    transition: all 0.4s ease;
}
.solution-card-desc {
    font-size: 14px;
    line-height: 1.6;
    color: #ffffff;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
    max-height: 0;
    overflow: hidden;
    margin-top: 0;
    text-shadow: 0 1px 3px rgba(0,0,0,0.7);
}
.solution-card-img:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}
.solution-card-img:hover .solution-card-bg {
    filter: blur(1px);
    transform: scale(1.02);
}
.solution-card-img:hover .solution-card-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.7) 40%, rgba(0,0,0,0.4) 70%, rgba(0,0,0,0.2) 100%);
}
.solution-card-img:hover .solution-card-content {
    transform: translateY(-30px);
}
.solution-card-img:hover .solution-card-content h4 {
    margin-bottom: 12px;
}
.solution-card-img:hover .solution-card-desc {
    opacity: 1;
    transform: translateY(0);
    max-height: 150px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.3);
}
@media (max-width: 1024px) {
    .solutions-cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .solutions-cards-grid { grid-template-columns: 1fr; }
    .solution-card-img { height: 280px; padding: 20px; }
    .solution-card-content h4 { font-size: 18px; }
    .solution-card-desc { font-size: 13px; }
    .solution-card-img:hover .solution-card-content { transform: translateY(-20px); }
}