:root {
    --primary: #0f172a;
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --accent-dark: #1d4ed8;
    --accent-grad-start: #6366f1;
    --accent-grad-end: #3b82f6;
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --surface-card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gradient-start: #0f172a;
    --gradient-end: #1e3a5f;
}

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--surface);
    overflow-x: hidden;
}

html[lang="zh"] [data-lang="zh"] { display: block; }
html[lang="zh"] [data-lang="en"] { display: none; }
html[lang="en"] [data-lang="en"] { display: block; }
html[lang="en"] [data-lang="zh"] { display: none; }
[data-lang] { display: none; }
[data-lang="en"].active, [data-lang="zh"].active { display: block; }

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}
nav.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(59,130,246,0.3);
}

.nav-links {
    display: flex;
    gap: 36px;
    align-items: center;
}
.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 0.92rem;
    transition: color 0.2s;
    position: relative;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }

.lang-toggle {
    display: flex;
    gap: 4px;
    background: var(--surface-alt);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border);
}
.lang-btn {
    padding: 6px 14px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.2s;
    color: var(--text-light);
}
.lang-btn.active {
    background: white;
    color: var(--accent);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, #1a365d 50%, var(--gradient-end) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}
.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(99,102,241,0.2) 0%, transparent 60%);
    animation: pulse 10s ease-in-out infinite;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 60%);
    animation: pulse 12s ease-in-out infinite reverse;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.3); opacity: 0.9; }
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 30px;
    color: rgba(255,255,255,0.9);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
}
.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: blink 2s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.hero-content h1 {
    font-size: 3.8rem;
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero-content h1 span {
    background: linear-gradient(135deg, var(--accent-light), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-content p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.75);
    margin-bottom: 40px;
    max-width: 560px;
    line-height: 1.8;
}
.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn {
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 4px 20px rgba(59,130,246,0.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59,130,246,0.5);
}
.btn-secondary {
    background: rgba(255,255,255,0.08);
    color: white;
    border: 1px solid rgba(255,255,255,0.25);
    backdrop-filter: blur(10px);
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.atom-visual {
    width: 440px;
    height: 440px;
    position: relative;
}
.atom-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    background: radial-gradient(circle, var(--accent-light), var(--accent));
    border-radius: 50%;
    box-shadow: 0 0 60px rgba(59,130,246,0.7), 0 0 120px rgba(99,102,241,0.3);
    animation: glow 3s ease-in-out infinite;
}
@keyframes glow {
    0%, 100% { box-shadow: 0 0 60px rgba(59,130,246,0.7); }
    50% { box-shadow: 0 0 100px rgba(59,130,246,1); }
}
.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1.5px solid rgba(255,255,255,0.12);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.orbit-1 { width: 130px; height: 130px; animation: rotate 10s linear infinite; }
.orbit-2 { width: 240px; height: 240px; animation: rotate 16s linear infinite reverse; }
.orbit-3 { width: 360px; height: 360px; animation: rotate 22s linear infinite; }
.electron {
    position: absolute;
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 15px white, 0 0 30px rgba(255,255,255,0.5);
}
.orbit-1 .electron { top: -6px; left: 50%; transform: translateX(-50%); }
.orbit-2 .electron { bottom: -6px; left: 50%; transform: translateX(-50%); }
.orbit-3 .electron { top: 50%; right: -6px; transform: translateY(-50%); }
@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Trust bar */
.trust-bar {
    background: var(--surface-alt);
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
}
.trust-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
}
.trust-item .icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
}

/* Section Styles */
section { padding: 100px 0; }
.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 72px;
}
.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(59,130,246,0.1));
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.section-header h2 {
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--primary);
    letter-spacing: -0.5px;
}
.section-header p {
    font-size: 1.15rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* Differentiator Section */
.diff-section {
    background: linear-gradient(135deg, var(--gradient-start), #1a365d);
    color: white;
    padding: 80px 0;
}
.diff-section .section-tag {
    background: rgba(255,255,255,0.15);
    color: white;
}
.diff-section .section-header h2,
.diff-section .section-header p { color: white; }
.diff-section .section-header p { color: rgba(255,255,255,0.7); }

.diff-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.diff-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}
.diff-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.2);
}
.diff-card .icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-light), var(--accent-grad-start));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 20px;
    color: white;
}
.diff-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}
.diff-card p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.6;
}
.diff-card .metric {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-light), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

/* Comparison Table */
.compare-section {
    background: var(--surface);
    padding: 80px 0;
}
.compare-table-wrapper {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}
.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}
.compare-table th {
    background: var(--surface-alt);
    padding: 18px 24px;
    text-align: left;
    font-weight: 600;
    color: var(--text);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}
.compare-table th:first-child { width: 30%; }
.compare-table td {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: top;
}
.compare-table tr:hover td { background: var(--surface-alt); }
.compare-table .highlight {
    background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(99,102,241,0.08));
    font-weight: 600;
    color: var(--accent-dark);
}
.compare-table .check { color: var(--success); font-weight: 700; }
.compare-table .partial { color: var(--warning); }
.compare-table .na { color: var(--text-muted); }
.tag-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}
.tag-ai { background: rgba(59,130,246,0.12); color: var(--accent-dark); }
.tag-wt { background: rgba(100,116,139,0.12); color: var(--text-light); }

/* Product Section */
.product-section { background: var(--surface); }
.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.product-visual {
    background: linear-gradient(135deg, var(--surface-alt), #f1f5f9);
    border-radius: 24px;
    padding: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 420px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.product-visual::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99,102,241,0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59,130,246,0.06) 0%, transparent 50%);
}
.software-mockup {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 500px;
    background: white;
    border-radius: 14px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.12);
    overflow: hidden;
}
.mockup-header {
    background: var(--primary);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.mockup-dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #22c55e; }
.mockup-title {
    color: rgba(255,255,255,0.7);
    font-size: 0.8rem;
    margin-left: 8px;
    font-weight: 500;
}
.mockup-body {
    padding: 28px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.mockup-panel {
    background: var(--surface-alt);
    border-radius: 10px;
    padding: 18px;
    border: 1px solid var(--border);
}
.mockup-panel-title {
    font-size: 0.7rem;
    color: var(--text-light);
    margin-bottom: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.mockup-chart {
    height: 50px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 6px;
    opacity: 0.85;
    position: relative;
}
.mockup-chart::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 30%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3));
    border-radius: 0 0 6px 6px;
}
.mockup-image-placeholder {
    height: 90px;
    background: linear-gradient(135deg, #1e293b, #334155);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.5);
    font-size: 0.75rem;
    font-weight: 500;
}
.mockup-status {
    grid-column: 1 / -1;
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(99,102,241,0.08));
    border-radius: 10px;
    border: 1px solid rgba(59,130,246,0.15);
}
.mockup-status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: blink 2s infinite;
}
.mockup-status-text {
    font-size: 0.8rem;
    color: var(--accent-dark);
    font-weight: 600;
}

.product-features { display: flex; flex-direction: column; gap: 28px; }
.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 20px;
    border-radius: 14px;
    transition: all 0.3s;
}
.feature-item:hover {
    background: var(--surface-alt);
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}
.feature-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(59,130,246,0.12));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}
.feature-text h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--primary);
}
.feature-text p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}
.feature-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(16,185,129,0.1);
    color: var(--success);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-top: 8px;
}

/* Hardware Section */
.hardware-section { background: var(--surface-alt); }
.hardware-tabs {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}
.hardware-tab {
    padding: 12px 28px;
    border-radius: 10px;
    border: 1.5px solid var(--border);
    background: white;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text-light);
}
.hardware-tab.active {
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(59,130,246,0.3);
}
.hardware-tab:hover:not(.active) {
    border-color: var(--accent);
    color: var(--accent);
}
.hardware-content { display: none; }
.hardware-content.active { display: block; }

.hardware-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.hardware-card {
    background: white;
    border-radius: 18px;
    padding: 32px 28px;
    border: 1px solid var(--border);
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}
.hardware-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--accent-grad-start), var(--accent-grad-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s;
}
.hardware-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 48px rgba(0,0,0,0.08);
    border-color: transparent;
}
.hardware-card:hover::before { transform: scaleX(1); }
.hardware-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
.hardware-brand-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--surface-alt), #f1f5f9);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--accent);
    border: 1px solid var(--border);
}
.hardware-brand-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
}
.hardware-brand-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}
.hardware-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary);
}
.hardware-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 16px;
}
.hardware-specs {
    list-style: none;
}
.hardware-specs li {
    padding: 5px 0;
    color: var(--text-light);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hardware-specs li::before {
    content: '▸';
    color: var(--accent);
    font-weight: 700;
}
.hardware-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(16,185,129,0.1);
    color: var(--success);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-top: 12px;
}
.hardware-badge.beta {
    background: rgba(245,158,11,0.1);
    color: var(--warning);
}

/* Detector specific */
.detector-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.detector-card {
    background: white;
    border-radius: 16px;
    padding: 28px 24px;
    border: 1px solid var(--border);
    transition: all 0.3s;
    text-align: center;
}
.detector-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.08);
    border-color: transparent;
}
.detector-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 16px;
    color: white;
    box-shadow: 0 8px 20px rgba(59,130,246,0.25);
}
.detector-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--primary);
}
.detector-card .maker {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    font-weight: 500;
}
.detector-card p {
    color: var(--text-light);
    font-size: 0.85rem;
    line-height: 1.6;
}
.detector-meta {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 14px;
    flex-wrap: wrap;
}
.detector-meta span {
    padding: 3px 10px;
    background: var(--surface-alt);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 500;
    border: 1px solid var(--border);
}

/* Services Section */
.services-section { background: var(--surface); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: white;
    border-radius: 18px;
    padding: 36px 28px;
    border: 1px solid var(--border);
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--accent-grad-start), var(--accent-grad-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 48px rgba(0,0,0,0.08);
    border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: white;
    box-shadow: 0 8px 20px rgba(59,130,246,0.25);
}
.service-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary);
}
.service-card p {
    color: var(--text-light);
    font-size: 0.92rem;
    line-height: 1.7;
}
.service-list {
    margin-top: 16px;
    list-style: none;
}
.service-list li {
    padding: 6px 0;
    color: var(--text-light);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.service-list li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 800;
    font-size: 0.9rem;
}
.service-price {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.service-price-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.service-price-value {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--accent-dark);
}

/* Technology Section */
.tech-section { background: var(--surface-alt); }
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.tech-card {
    background: white;
    border-radius: 16px;
    padding: 36px 24px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.3s;
}
.tech-card:hover {
    background: white;
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
    transform: translateY(-4px);
    border-color: transparent;
}
.tech-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: -1px;
}
.tech-label {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 600;
}
.tech-sublabel {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Process Section */
.process-section {
    background: linear-gradient(135deg, var(--gradient-start), #1a365d);
    color: white;
}
.process-section .section-header h2,
.process-section .section-header p { color: white; }
.process-section .section-header p { color: rgba(255,255,255,0.7); }
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.process-step {
    text-align: center;
    position: relative;
    padding: 20px;
    background: rgba(255,255,255,0.04);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s;
}
.process-step:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-4px);
}
.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 40px;
    right: -14px;
    width: 28px;
    height: 2px;
    background: rgba(255,255,255,0.25);
}
.step-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(59,130,246,0.3));
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    font-weight: 800;
    margin: 0 auto 20px;
    color: white;
}
.process-step h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}
.process-step p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
}

/* Use Cases Section */
.usecase-section { background: var(--surface); }
.usecase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.usecase-card {
    background: white;
    border-radius: 18px;
    padding: 36px;
    border: 1px solid var(--border);
    transition: all 0.3s;
    display: flex;
    gap: 24px;
    align-items: flex-start;
}
.usecase-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
    transform: translateY(-4px);
}
.usecase-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(59,130,246,0.25);
}
.usecase-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--primary);
}
.usecase-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 12px;
}
.usecase-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.usecase-tag {
    padding: 4px 12px;
    background: var(--surface-alt);
    border-radius: 6px;
    font-size: 0.78rem;
    color: var(--text-light);
    font-weight: 500;
    border: 1px solid var(--border);
}

/* About Section */
.about-section { background: var(--surface-alt); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.about-content h3 {
    font-size: 1.9rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--primary);
    letter-spacing: -0.5px;
}
.about-content p {
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 20px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 36px;
}
.about-stat {
    text-align: center;
    padding: 24px;
    background: white;
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}
.about-stat:hover {
    background: white;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.about-stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}
.about-stat-label {
    font-size: 0.88rem;
    color: var(--text-light);
    font-weight: 500;
}
.about-visual {
    background: white;
    border-radius: 24px;
    padding: 40px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 40px rgba(0,0,0,0.04);
}
.team-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.team-member {
    text-align: center;
    padding: 24px 16px;
    border-radius: 14px;
    background: var(--surface-alt);
    transition: all 0.3s;
    border: 1px solid transparent;
}
.team-member:hover {
    background: white;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    border-color: var(--border);
}
.team-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-grad-start), var(--accent-grad-end));
    border-radius: 50%;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    font-weight: 700;
    box-shadow: 0 6px 16px rgba(59,130,246,0.3);
}
.team-member h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--primary);
}
.team-member p {
    font-size: 0.82rem;
    color: var(--text-light);
}

/* Contact Section */
.contact-section { background: var(--surface); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-info h3 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--primary);
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    margin-bottom: 28px;
}
.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(59,130,246,0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent);
    flex-shrink: 0;
}
.contact-text h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--primary);
}
.contact-text p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}
.contact-form {
    background: white;
    border-radius: 20px;
    padding: 40px;
    border: 1px solid var(--border);
    box-shadow: 0 8px 32px rgba(0,0,0,0.04);
}
.form-group { margin-bottom: 22px; }
.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--surface-alt);
    transition: all 0.2s;
    color: var(--text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    background: white;
    box-shadow: 0 0 0 4px rgba(59,130,246,0.1);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}
.form-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(59,130,246,0.3);
}
.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59,130,246,0.4);
}

/* Footer */
footer {
    background: var(--primary);
    color: rgba(255,255,255,0.65);
    padding: 64px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 56px;
}
.footer-brand { max-width: 320px; }
.footer-brand .logo { color: white; margin-bottom: 18px; }
.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.55);
}
.footer-links h4 {
    color: white;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 22px;
}
.footer-links a {
    display: block;
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 12px;
    transition: color 0.2s;
}
.footer-links a:hover { color: white; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.45);
}

/* Results Section */
.results-section { background: var(--surface-alt); }
.results-hero { margin-bottom: 28px; }
.results-hero img { width: 100%; border-radius: 18px; border: 1px solid var(--border); display: block; }
.results-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.result-card { background: white; border-radius: 18px; border: 1px solid var(--border); overflow: hidden; transition: all 0.3s; }
.result-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.result-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; }
.result-body { padding: 20px 22px 24px; }
.result-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.result-body p { font-size: 0.88rem; color: var(--text-light); line-height: 1.65; margin-bottom: 10px; }
.result-cite { font-size: 0.75rem; color: var(--text-muted); font-style: italic; }
.results-note { text-align: center; margin-top: 28px; font-size: 0.85rem; color: var(--text-muted); }

/* Process merged into Services (light variant) */
.process-light { margin-top: 80px; padding-top: 8px; }
.process-light .process-title { text-align: center; font-size: 1.7rem; font-weight: 800; color: var(--primary); margin-bottom: 12px; }
.process-light .process-sub { text-align: center; font-size: 1rem; color: var(--text-light); margin-bottom: 44px; }
.process-light .process-step { background: white; border: 1px solid var(--border); }
.process-light .process-step:hover { background: var(--surface-alt); transform: translateY(-4px); }
.process-light .process-step h3 { color: var(--primary); }
.process-light .process-step p { color: var(--text-light); }
.process-light .step-number { background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(59,130,246,0.12)); border: 2px solid var(--accent); color: var(--accent-dark); }
.process-light .process-step:not(:last-child)::after { background: var(--border); }

/* Technology detail cards */
.tech-detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.tech-detail-card { background: white; border-radius: 18px; padding: 32px 28px; border: 1px solid var(--border); }
.tech-detail-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.tech-detail-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.7; margin-bottom: 14px; }
.tech-detail-card .vs { font-size: 0.85rem; color: var(--accent-dark); background: rgba(59,130,246,0.08); padding: 10px 14px; border-radius: 10px; display: block; line-height: 1.6; }

/* Datasheet CTA */
.datasheet-cta { text-align: center; margin-top: 56px; }

/* Client portal banner */
.portal-banner { background: linear-gradient(135deg, var(--gradient-start), #1a365d); border-radius: 20px; padding: 40px 44px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; margin-bottom: 64px; }
.portal-banner h3 { color: white; font-size: 1.4rem; font-weight: 800; margin-bottom: 8px; }
.portal-banner p { color: rgba(255,255,255,0.7); font-size: 0.95rem; max-width: 620px; line-height: 1.7; }
.portal-soon { display: inline-block; margin-left: 10px; padding: 3px 10px; background: rgba(245,158,11,0.2); color: #fbbf24; border-radius: 6px; font-size: 0.72rem; font-weight: 700; vertical-align: middle; }

/* Responsive */
@media (max-width: 1024px) {
    .results-grid,
    .tech-detail-grid { grid-template-columns: 1fr; }
    .hero-container,
    .product-grid,
    .about-grid,
    .contact-grid,
    .usecase-grid { grid-template-columns: 1fr; }
    .services-grid,
    .hardware-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-grid,
    .detector-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .diff-grid { grid-template-columns: repeat(2, 1fr); }
    .process-step:not(:last-child)::after { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-content h1 { font-size: 2.6rem; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .hero-content h1 { font-size: 2rem; }
    .hero-content p { font-size: 1rem; }
    .services-grid,
    .hardware-grid,
    .tech-grid,
    .detector-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; }
    .diff-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .atom-visual { width: 280px; height: 280px; }
    .orbit-1 { width: 80px; height: 80px; }
    .orbit-2 { width: 150px; height: 150px; }
    .orbit-3 { width: 220px; height: 220px; }
    .usecase-card { flex-direction: column; }
    .trust-container { gap: 20px; }
}

html { scroll-behavior: smooth; }
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Multi-page: spacer below fixed nav on subpages */
.page-offset { height: 72px; }