/* ============================================
   HuaRui Precision - Main Stylesheet
   华瑞精艺 PCB智能装备企业官网
   ============================================ */

:root {
    --primary: #0F4C81;
    --primary-light: #1A6BB5;
    --primary-dark: #0A3558;
    --accent: #E8792B;
    --accent-light: #F59A4E;
    --accent-dark: #C9621A;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --success: #10B981;
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Orbitron', 'Noto Sans SC', sans-serif;
    --container-max: 1280px;
    --container-padding: 1.5rem;
    --nav-height: 72px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --border-radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }

.section-header { text-align: center; margin-bottom: 3rem; max-width: 680px; margin-left: auto; margin-right: auto; }
.section-header.light .section-title, .section-header.light .section-desc { color: var(--white); }
.section-header.light .section-tag { color: var(--accent-light); border-color: rgba(232,121,43,0.3); }
.section-tag {
    display: inline-block; font-size: 0.8rem; font-weight: 500; color: var(--accent);
    text-transform: uppercase; letter-spacing: 0.15em; padding: 0.35rem 1rem;
    border: 1px solid rgba(232,121,43,0.2); border-radius: var(--border-radius-full); margin-bottom: 1.5rem;
}
.section-title { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; color: var(--gray-900); margin-bottom: 1rem; letter-spacing: -0.02em; }
.section-desc { font-size: 1.05rem; color: var(--gray-500); line-height: 1.8; }

/* NAV */
.navbar { position: fixed; top: 0; left: 0; right: 0; height: var(--nav-height); z-index: 1000; transition: all var(--transition-base); background: transparent; }
.navbar.scrolled { background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); box-shadow: var(--shadow-md); height: 64px; }
.nav-container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; z-index: 1001; }
.logo-img { height: 42px; width: auto; object-fit: contain; transition: all var(--transition-base); }
.navbar.scrolled .logo-img { height: 36px; }

.logo-text { font-size: 1.3rem; font-weight: 900; color: var(--white); transition: color var(--transition-base); letter-spacing: 0.05em; }
.navbar.scrolled .logo-text { color: var(--primary); }
.logo-sub { font-family: var(--font-display); font-size: 0.6rem; color: rgba(255,255,255,0.7); letter-spacing: 0.2em; transition: color var(--transition-base); }
.navbar.scrolled .logo-sub { color: var(--gray-400); }
.nav-menu { display: flex; align-items: center; gap: 2rem; }
.nav-link { font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.85); position: relative; padding: 0.25rem 0; transition: color var(--transition-fast); }
.navbar.scrolled .nav-link { color: var(--gray-600); }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--accent); border-radius: 1px; transition: width var(--transition-base); }
.nav-link:hover, .nav-link.active { color: var(--white); }
.navbar.scrolled .nav-link:hover, .navbar.scrolled .nav-link.active { color: var(--primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; z-index: 1001; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: all var(--transition-base); }
.navbar.scrolled .nav-toggle span { background: var(--gray-700); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* HERO */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; padding-top: var(--nav-height); }
.hero-bg { position: absolute; inset: 0; background: linear-gradient(135deg, #0A3558 0%, #0F4C81 40%, #1A6BB5 70%, #0F4C81 100%); z-index: 0; }
.hero-particles { position: absolute; inset: 0; z-index: 1; }
.hero-gradient { position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 50%, rgba(232,121,43,0.15) 0%, transparent 50%), radial-gradient(ellipse at 80% 20%, rgba(15,76,129,0.3) 0%, transparent 50%), radial-gradient(ellipse at 50% 80%, rgba(232,121,43,0.1) 0%, transparent 50%); z-index: 2; }
.hero-content { position: relative; z-index: 3; text-align: center; max-width: 900px; padding: 3rem var(--container-padding); }
.hero-badge { display: inline-flex; align-items: center; gap: 0.5rem; background: rgba(232,121,43,0.15); border: 1px solid rgba(232,121,43,0.3); padding: 0.5rem 1.25rem; border-radius: var(--border-radius-full); color: var(--accent-light); font-size: 0.85rem; font-weight: 500; margin-bottom: 2rem; animation: fadeInDown 0.8s ease-out; }
.hero-title { margin-bottom: 2rem; animation: fadeInUp 0.8s ease-out 0.2s both; }
.title-line { display: block; font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 300; color: rgba(255,255,255,0.8); margin-bottom: 0.5rem; letter-spacing: 0.1em; }
.title-highlight { display: block; font-size: clamp(2.2rem, 6vw, 3.8rem); font-weight: 900; background: linear-gradient(135deg, #FFF 0%, #F0C27F 50%, #E8792B 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: clamp(1rem, 1.5vw, 1.15rem); color: rgba(255,255,255,0.7); line-height: 1.8; max-width: 650px; margin: 0 auto 3rem; animation: fadeInUp 0.8s ease-out 0.4s both; }
.hero-stats { display: flex; align-items: center; justify-content: center; gap: 3rem; margin-bottom: 3rem; animation: fadeInUp 0.8s ease-out 0.6s both; }
.stat-item { text-align: center; }
.stat-number { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; color: var(--white); line-height: 1.2; }
.stat-suffix { font-family: var(--font-display); font-size: clamp(1.2rem, 2.5vw, 1.8rem); font-weight: 700; color: var(--accent); }
.stat-label { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 0.25rem; }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.2); }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 1.5rem; animation: fadeInUp 0.8s ease-out 0.8s both; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.875rem 2rem; border-radius: var(--border-radius); font-size: 0.95rem; font-weight: 600; transition: all var(--transition-base); position: relative; overflow: hidden; }
.btn-primary { background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); color: var(--white); box-shadow: 0 4px 15px rgba(232,121,43,0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(232,121,43,0.5); }
.btn-outline { border: 2px solid rgba(255,255,255,0.3); color: var(--white); background: rgba(255,255,255,0.05); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-full { width: 100%; justify-content: center; }
.hero-scroll { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 3; animation: fadeIn 1s ease-out 1.2s both; }
.scroll-indicator { width: 24px; height: 40px; border: 2px solid rgba(255,255,255,0.3); border-radius: 12px; display: flex; justify-content: center; padding-top: 8px; }
.scroll-dot { width: 4px; height: 8px; background: var(--white); border-radius: 2px; animation: scrollBounce 2s ease-in-out infinite; }

/* PRODUCTS */
.products { padding: 6rem 0; background: var(--gray-50); }
.product-filter { display: flex; justify-content: center; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
.filter-btn { padding: 0.6rem 1.5rem; border-radius: var(--border-radius-full); font-size: 0.9rem; font-weight: 500; color: var(--gray-500); border: 1px solid var(--gray-200); background: var(--white); transition: all var(--transition-base); }
.filter-btn:hover { border-color: var(--primary-light); color: var(--primary); }
.filter-btn.active { background: var(--primary); color: var(--white); border-color: var(--primary); box-shadow: 0 4px 12px rgba(15,76,129,0.3); }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.product-card { background: var(--white); border-radius: var(--border-radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition-base); border: 1px solid var(--gray-100); }
.product-card.hidden { display: none; }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); border-color: transparent; }
.product-image { position: relative; height: 220px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-image .device-photo { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease, filter 0.4s ease; filter: brightness(1); }
.product-card:hover .device-photo { transform: scale(1.05); filter: brightness(1.05); }
.product-card:nth-child(2n) .product-image { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); }
.product-card:nth-child(3n) .product-image { background: linear-gradient(135deg, #1A6BB5 0%, #0F4C81 100%); }
.product-icon-wrap { width: 80px; height: 80px; background: rgba(255,255,255,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: transform var(--transition-base); }
.product-card:hover .product-icon-wrap { transform: scale(1.1) rotate(5deg); }
.product-icon-wrap i { font-size: 2rem; color: var(--white); }
.product-tag { position: absolute; top: 1rem; right: 1rem; padding: 0.25rem 0.75rem; border-radius: var(--border-radius-full); font-size: 0.75rem; font-weight: 600; background: var(--accent); color: var(--white); }
.product-tag.hot { background: #EF4444; }
.product-tag.new { background: var(--success); }
.product-info { padding: 1.5rem; }
.product-model { font-family: var(--font-display); font-size: 0.85rem; color: var(--accent); font-weight: 700; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
.product-name { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); margin-bottom: 1rem; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-specs { display: flex; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.spec { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.8rem; color: var(--gray-500); background: var(--gray-50); padding: 0.3rem 0.65rem; border-radius: var(--border-radius-sm); }
.spec i { color: var(--primary-light); font-size: 0.7rem; }
.product-feature { font-size: 0.9rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 1.5rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-link { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.9rem; font-weight: 600; color: var(--primary); transition: all var(--transition-fast); }
.product-link:hover { color: var(--accent); gap: 0.65rem; }
.product-link i { font-size: 0.75rem; }

/* ADVANTAGES */
.advantages { padding: 6rem 0; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); position: relative; overflow: hidden; }
.advantages::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 10% 20%, rgba(232,121,43,0.1) 0%, transparent 40%), radial-gradient(circle at 90% 80%, rgba(232,121,43,0.08) 0%, transparent 40%); }
.advantages-grid { position: relative; display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 1.5rem; }
.advantage-card { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--border-radius-lg); padding: 2rem; backdrop-filter: blur(10px); transition: all var(--transition-base); }
.advantage-card:hover { background: rgba(255,255,255,0.12); transform: translateY(-4px); border-color: rgba(232,121,43,0.3); }
.advantage-icon { width: 56px; height: 56px; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); border-radius: var(--border-radius); display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; box-shadow: 0 4px 15px rgba(232,121,43,0.3); }
.advantage-icon i { font-size: 1.4rem; color: var(--white); }
.advantage-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.advantage-card p { font-size: 0.9rem; color: rgba(255,255,255,0.65); line-height: 1.7; }

/* APPLICATION */
.application { padding: 6rem 0; background: var(--white); }
.app-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1.5rem; }
.app-item { text-align: center; padding: 1.5rem; border-radius: var(--border-radius); border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.app-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.app-icon { width: 64px; height: 64px; background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; transition: all var(--transition-base); }
.app-item:hover .app-icon { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); }
.app-icon i { font-size: 1.5rem; color: var(--primary); transition: color var(--transition-base); }
.app-item:hover .app-icon i { color: var(--white); }
.app-item h4 { font-size: 1rem; font-weight: 600; color: var(--gray-900); margin-bottom: 0.25rem; }
.app-item p { font-size: 0.8rem; color: var(--gray-400); }

/* ABOUT */
.about { padding: 6rem 0; background: var(--gray-50); }
.about-subtitle { font-size: 1.3rem; font-weight: 700; color: var(--gray-900); margin-bottom: 2rem; text-align: center; position: relative; padding-bottom: 1rem; }
.about-subtitle::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 50px; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 2px; }

/* About Intro */
.about-intro { margin-bottom: 4rem; }
.about-intro-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 3rem; align-items: start; }
.about-intro-text .about-lead { font-size: 1.1rem; font-weight: 500; color: var(--gray-800); line-height: 1.9; margin-bottom: 1.5rem; }
.about-intro-text p { color: var(--gray-600); line-height: 1.8; margin-bottom: 1rem; }
.about-intro-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.highlight-card { background: var(--white); border-radius: var(--border-radius); padding: 1.5rem; text-align: center; border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.highlight-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--accent); }
.highlight-icon { width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 0.75rem; }
.highlight-icon i { color: var(--white); font-size: 0.9rem; }
.highlight-number { font-family: var(--font-display); font-size: 2rem; font-weight: 900; color: var(--primary); line-height: 1.2; }
.highlight-label { font-size: 0.85rem; color: var(--gray-400); margin-top: 0.25rem; }

/* Tech Cards */
.about-tech { margin-bottom: 4rem; }
.tech-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.tech-card { background: var(--white); border-radius: var(--border-radius-lg); padding: 2rem; border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.tech-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--primary-light); }
.tech-card-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.tech-card-icon { width: 48px; height: 48px; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); border-radius: var(--border-radius); display: flex; align-items: center; justify-content: center; flex-shrink: 0; box-shadow: 0 4px 12px rgba(232,121,43,0.3); }
.tech-card-icon i { color: var(--white); font-size: 1.2rem; }
.tech-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--gray-900); line-height: 1.4; }
.tech-card p { font-size: 0.9rem; color: var(--gray-500); line-height: 1.8; }

/* Timeline */
.about-timeline { margin-bottom: 4rem; }
.timeline { position: relative; max-width: 700px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 24px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%); }
.timeline-item { position: relative; padding-left: 70px; padding-bottom: 2.5rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: 16px; top: 4px; width: 18px; height: 18px; background: var(--white); border: 3px solid var(--primary); border-radius: 50%; z-index: 1; transition: all var(--transition-base); }
.timeline-item:last-child .timeline-dot { border-color: var(--accent); background: var(--accent); }
.timeline-item:last-child .timeline-dot::after { content: ''; position: absolute; inset: 3px; background: var(--white); border-radius: 50%; }
.timeline-item:hover .timeline-dot { box-shadow: 0 0 0 4px rgba(15,76,129,0.15); transform: scale(1.2); }
.timeline-content { background: var(--white); border-radius: var(--border-radius); padding: 1.25rem 1.5rem; border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.timeline-item:hover .timeline-content { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.timeline-year { font-family: var(--font-display); font-size: 0.9rem; font-weight: 700; color: var(--accent); margin-bottom: 0.35rem; }
.timeline-title { font-size: 1.05rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.5rem; }
.timeline-desc { font-size: 0.88rem; color: var(--gray-500); line-height: 1.7; }

/* Values Cards */
.about-values-section { margin-bottom: 4rem; }
.values-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; max-width: 800px; margin: 0 auto; }
.value-card { text-align: center; padding: 2rem 1.5rem; background: var(--white); border-radius: var(--border-radius-lg); border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.value-card-icon { width: 64px; height: 64px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 1.25rem; box-shadow: 0 4px 15px rgba(15,76,129,0.2); }
.value-card-icon i { color: var(--white); font-size: 1.5rem; }
.value-card h4 { font-size: 1.2rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.5rem; }
.value-card p { font-size: 0.95rem; color: var(--gray-500); line-height: 1.6; }

/* Honors */
.honors { padding: 6rem 0; background: var(--white); }

/* Patent Wall */
.honors-patent { margin-bottom: 4rem; }
.honors-patent-header { display: flex; align-items: center; gap: 1.5rem; margin-bottom: 2rem; padding: 1.5rem 2rem; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); border-radius: var(--border-radius-lg); }
.honors-patent-icon { width: 56px; height: 56px; background: rgba(232,121,43,0.2); border-radius: var(--border-radius); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.honors-patent-icon i { color: var(--accent-light); font-size: 1.5rem; }
.honors-patent-header h3 { font-size: 1.2rem; font-weight: 700; color: var(--white); margin-bottom: 0.25rem; }
.honors-patent-header p { font-size: 0.9rem; color: rgba(255,255,255,0.65); }
.patent-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }
.patent-item { display: flex; align-items: center; gap: 1rem; padding: 1.25rem 1.5rem; background: var(--gray-50); border-radius: var(--border-radius); border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.patent-item:hover { background: var(--white); box-shadow: var(--shadow-md); border-color: var(--primary-light); transform: translateX(4px); }
.patent-icon { width: 44px; height: 44px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: var(--border-radius-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.patent-icon i { color: var(--white); font-size: 1rem; }
.patent-label { font-size: 0.78rem; font-weight: 600; color: var(--accent); margin-bottom: 0.15rem; }
.patent-name { font-size: 0.9rem; font-weight: 600; color: var(--gray-800); line-height: 1.4; }

/* Awards */
.honors-subtitle { font-size: 1.2rem; font-weight: 600; color: var(--gray-700); margin-bottom: 1.5rem; text-align: center; }
.awards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; margin-bottom: 4rem; }
.award-card { text-align: center; padding: 2rem 1.5rem; background: var(--gray-50); border-radius: var(--border-radius-lg); border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.award-card:hover { background: var(--white); box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--accent); }
.award-icon { width: 64px; height: 64px; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 1.25rem; box-shadow: 0 4px 15px rgba(232,121,43,0.3); }
.award-icon i { color: var(--white); font-size: 1.4rem; }
.award-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.5rem; line-height: 1.4; }
.award-card p { font-size: 0.88rem; color: var(--gray-500); line-height: 1.6; }

/* Honors Stats */
.honors-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); border-radius: var(--border-radius-lg); padding: 3rem 2rem; position: relative; overflow: hidden; }
.honors-stats::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 80% 20%, rgba(232,121,43,0.15) 0%, transparent 50%); }
.honor-stat { text-align: center; position: relative; z-index: 1; }
.honor-stat-number { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 900; color: var(--white); line-height: 1.2; }
.honor-stat-number span { font-size: 0.7em; color: var(--accent-light); }
.honor-stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.65); margin-top: 0.5rem; }

/* Clients */
.clients-section { text-align: center; }
.clients-title { font-size: 1.2rem; font-weight: 600; color: var(--gray-700); margin-bottom: 1.5rem; }
.clients-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.client-item { background: var(--white); padding: 1.5rem; border-radius: var(--border-radius-sm); font-size: 0.9rem; font-weight: 500; color: var(--gray-600); border: 1px solid var(--gray-100); transition: all var(--transition-base); }
.client-item:hover { border-color: var(--primary-light); color: var(--primary); box-shadow: var(--shadow-sm); }
.clients-note { font-size: 0.85rem; color: var(--gray-400); font-style: italic; }

/* CONTACT */
.contact { padding: 6rem 0; background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; }
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item { display: flex; align-items: flex-start; gap: 1.5rem; padding: 1.5rem; background: rgba(255,255,255,0.05); border-radius: var(--border-radius); border: 1px solid rgba(255,255,255,0.08); transition: all var(--transition-base); }
.contact-item:hover { background: rgba(255,255,255,0.08); border-color: rgba(232,121,43,0.3); }
.contact-icon { width: 44px; height: 44px; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); border-radius: var(--border-radius-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-icon i { color: var(--white); font-size: 1rem; }
.contact-item h4 { font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.5); margin-bottom: 0.2rem; }
.contact-item p { font-size: 0.95rem; color: rgba(255,255,255,0.9); }
.contact-form-wrap { background: var(--white); border-radius: var(--border-radius-lg); padding: 2rem; box-shadow: var(--shadow-xl); }
.contact-form { display: flex; flex-direction: column; gap: 1.5rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 0.5rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--gray-200); border-radius: var(--border-radius-sm); font-size: 0.95rem; color: var(--gray-800); transition: all var(--transition-fast); background: var(--gray-50); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(15,76,129,0.1); background: var(--white); }
.form-group textarea { resize: vertical; min-height: 100px; }
.contact-form .btn-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); box-shadow: 0 4px 15px rgba(15,76,129,0.3); }

/* FOOTER */
.footer { background: var(--gray-900); padding: 3rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 2rem; padding-bottom: 2rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logo { margin-bottom: 1.5rem; }
.footer-logo .logo-img { height: 48px; width: auto; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 0.9rem; color: var(--gray-400); line-height: 1.7; }
.footer-links h4, .footer-contact h4 { font-size: 0.95rem; font-weight: 600; color: var(--white); margin-bottom: 1.5rem; }
.footer-links ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { font-size: 0.9rem; color: var(--gray-400); transition: all var(--transition-fast); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p { font-size: 0.9rem; color: var(--gray-400); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.5rem; }
.footer-contact i { color: var(--accent); font-size: 0.8rem; width: 16px; }
.footer-bottom { padding: 1.5rem 0; text-align: center; }
.footer-bottom p { font-size: 0.85rem; color: var(--gray-500); }

/* BACK TO TOP */
.back-to-top { position: fixed; bottom: 2rem; right: 2rem; width: 44px; height: 44px; background: var(--primary); color: var(--white); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(10px); transition: all var(--transition-base); z-index: 999; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--accent); transform: translateY(-3px); }

/* ANIMATIONS */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scrollBounce { 0%,100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(8px); opacity: 0.3; } }
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .about-intro-grid { grid-template-columns: 1fr; }
    .about-intro-highlights { grid-template-columns: repeat(4, 1fr); }
    .tech-cards { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .honors-stats { grid-template-columns: repeat(4, 1fr); padding: 2rem 1.5rem; }
}

@media (max-width: 768px) {
    :root { --container-padding: 1rem; }
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: var(--white); flex-direction: column; justify-content: center;
        gap: 2rem; box-shadow: var(--shadow-xl); transition: right var(--transition-base);
        padding: 2rem;
    }
    .nav-menu.active { right: 0; }
    .nav-menu .nav-link { font-size: 1.1rem; color: var(--gray-800); }
    .nav-menu .nav-link:hover, .nav-menu .nav-link.active { color: var(--primary); }
    .hero-stats { gap: 1.5rem; }
    .stat-divider { height: 30px; }
    .hero-actions { flex-direction: column; gap: 1rem; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .product-grid { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .app-grid { grid-template-columns: repeat(2, 1fr); }
    .about-intro-highlights { grid-template-columns: 1fr 1fr; }
    .tech-cards { grid-template-columns: 1fr; }
    .timeline { max-width: 100%; }
    .timeline::before { left: 12px; }
    .timeline-item { padding-left: 48px; }
    .timeline-dot { left: 4px; width: 16px; height: 16px; }
    .values-cards { grid-template-columns: 1fr; gap: 1rem; }
    .awards-grid { grid-template-columns: 1fr; }
    .honors-stats { grid-template-columns: 1fr 1fr; gap: 1.5rem; padding: 2rem 1.5rem; }
    .patent-wall { grid-template-columns: 1fr; }
    .clients-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
    .contact-form-wrap { padding: 1.5rem; }
}

@media (max-width: 480px) {
    .hero-stats { flex-direction: column; gap: 1rem; }
    .stat-divider { width: 40px; height: 1px; }
    .app-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
    .app-item { padding: 1rem; }
    .app-icon { width: 48px; height: 48px; }
    .app-icon i { font-size: 1.2rem; }
    .about-intro-highlights { grid-template-columns: 1fr 1fr; }
    .highlight-card { padding: 1rem; }
    .highlight-number { font-size: 1.5rem; }
    .honors-stats { grid-template-columns: 1fr 1fr; }
    .honor-stat-number { font-size: 1.8rem; }
    .honors-patent-header { flex-direction: column; text-align: center; gap: 1rem; padding: 1.25rem; }
    .clients-grid { grid-template-columns: 1fr 1fr; }
}

/* Product Detail Page Specific */
.product-detail-hero { padding-top: calc(var(--nav-height) + 3rem); padding-bottom: 3rem; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); }
.product-detail-hero .container { display: flex; flex-direction: column; align-items: center; text-align: center; }
.product-detail-hero h1 { font-size: clamp(1.5rem, 4vw, 2.5rem); color: var(--white); font-weight: 700; margin-bottom: 0.5rem; }
.product-detail-hero .model { font-family: var(--font-display); font-size: 1.1rem; color: var(--accent-light); margin-bottom: 1rem; }
.breadcrumb { display: flex; gap: 0.5rem; font-size: 0.85rem; margin-bottom: 2rem; }
.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: var(--accent-light); }

.spec-table-section { padding: 3rem 0; }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table tr:nth-child(even) { background: var(--gray-50); }
.spec-table td { padding: 0.75rem 1.5rem; border-bottom: 1px solid var(--gray-100); font-size: 0.95rem; }
.spec-table td:first-child { font-weight: 600; color: var(--gray-700); width: 200px; }
.spec-table td:last-child { color: var(--gray-600); }

.related-products { padding: 4rem 0; background: var(--gray-50); }

/* Toast notification */
.toast { position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%) translateY(100px); background: var(--gray-800); color: var(--white); padding: 1rem 2rem; border-radius: var(--border-radius); font-size: 0.9rem; z-index: 9999; opacity: 0; transition: all var(--transition-base); box-shadow: var(--shadow-xl); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }