/* ============================================
   佳友云 - 劳务派遣行业官网样式
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-bg: #eff6ff;
    --accent: #f59e0b;
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --success: #10b981;
    --gradient-1: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-2: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --gradient-3: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body.no-scroll {
    overflow: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul { list-style: none; }

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-lg {
    padding: 14px 36px;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-primary {
    background: var(--gradient-1);
    color: #fff;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-white {
    background: #fff;
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-white {
    border: 2px solid rgba(255,255,255,0.3);
    color: #fff;
    background: transparent;
}

.btn-outline-white:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.1);
}

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

.btn-arrow {
    transition: transform 0.3s;
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-nav {
    padding: 10px 24px;
    font-size: 0.875rem;
}

/* ---------- Navigation ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 10px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
}

.logo-icon {
    font-size: 1.6rem;
    color: var(--primary);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--primary-bg);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: #2563eb;
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: #7c3aed;
    bottom: -100px;
    left: -100px;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(37,99,235,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--primary-bg);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 24px;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Dashboard Mockup */
.hero-visual {
    position: relative;
    z-index: 1;
}

.dashboard-mockup {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transform: perspective(1000px) rotateY(-5deg) rotateX(3deg);
    transition: var(--transition);
}

.dashboard-mockup:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.mockup-header {
    background: var(--bg-secondary);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.mockup-dots span:nth-child(1) { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #10b981; }

.mockup-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.mockup-body {
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.mockup-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--border);
}

.card-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

.card-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.card-trend.up { color: var(--success); font-size: 0.8rem; }
.card-trend.down { color: #ef4444; font-size: 0.8rem; }

.card-3 {
    grid-column: 1 / -1;
}

.mockup-chart {
    grid-column: 1 / -1;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--border);
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    height: 100px;
}

.bar {
    flex: 1;
    background: linear-gradient(to top, var(--primary-light), var(--primary));
    border-radius: 4px 4px 0 0;
    transition: var(--transition);
    opacity: 0.5;
}

.bar.active {
    opacity: 1;
    background: linear-gradient(to top, #7c3aed, var(--primary));
}

/* ---------- Section Common ---------- */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Products Section ---------- */
.products {
    background: var(--bg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: var(--transition);
    position: relative;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.product-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--primary);
}

.product-icon svg {
    width: 28px;
    height: 28px;
}

.product-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.product-card > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-features li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
}

.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

/* ---------- Architecture Diagram ---------- */
.architecture {
    background: #fff;
    padding: 100px 0;
}

.arch-diagram {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    border: 1px solid var(--border);
    overflow: hidden;
}

/* ---- Layer Common ---- */
.arch-layer {
    border-radius: var(--radius-lg);
    margin-bottom: 0;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.06);
}

.layer-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: rgba(255,255,255,0.6);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.layer-tag {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 20px;
    letter-spacing: 0.05em;
}

.layer-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
}

.layer-content {
    padding: 28px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* ---- Bridge between layers ---- */
.arch-bridge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4px 0;
    position: relative;
}

.bridge-line {
    width: 2px;
    height: 24px;
    background: linear-gradient(to bottom, transparent, var(--primary-light), transparent);
}

.bridge-arrow {
    color: var(--primary);
    font-size: 0.8rem;
    animation: bounceDown 2s infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50% { transform: translateY(6px); opacity: 1; }
}

/* ---- Access Layer ---- */
.arch-layer-access {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 50%, #bbf7d0 100%);
}

.tag-access {
    background: #10b981;
    color: #fff;
}

.access-content .arch-node {
    background: #fff;
    border: 1.5px solid #86efac;
    border-radius: var(--radius-md);
    padding: 18px 24px;
    text-align: center;
    min-width: 130px;
    transition: all 0.3s ease;
    cursor: default;
}

.access-content .arch-node:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.15);
    border-color: #10b981;
}

.access-content .arch-node .node-icon {
    font-size: 1.6rem;
    margin-bottom: 6px;
}

.access-content .arch-node span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
}

.arch-connector {
    width: 40px;
    height: 1.5px;
    background: linear-gradient(to right, #86efac, #86efac 50%, transparent 50%);
    background-size: 8px 2px;
    opacity: 0.5;
}

/* ---- Business Layer ---- */
.arch-layer-business {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #bfdbfe 100%);
}

.tag-business {
    background: #2563eb;
    color: #fff;
}

.business-content {
    gap: 28px;
}

.biz-group {
    background: rgba(255,255,255,0.7);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    border: 1px solid rgba(37, 99, 235, 0.15);
    flex: 1;
    min-width: 220px;
}

.biz-group-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 14px;
    text-align: center;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.biz-nodes {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.node-biz {
    background: #fff;
    border: 1.5px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    text-align: center;
    flex: 1;
    transition: all 0.3s ease;
    cursor: default;
}

.node-biz:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
    border-color: var(--primary);
}

.node-biz .node-icon {
    font-size: 1.3rem;
    margin-bottom: 4px;
}

.node-biz span {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
}

/* ---- Platform Layer ---- */
.arch-layer-platform {
    background: linear-gradient(135deg, #faf5ff 0%, #f3e8ff 50%, #e9d5ff 100%);
}

.tag-platform {
    background: #7c3aed;
    color: #fff;
}

.platform-content {
    gap: 16px;
}

.node-platform {
    background: #fff;
    border: 1.5px solid rgba(124, 58, 237, 0.2);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    text-align: center;
    min-width: 140px;
    transition: all 0.3s ease;
    cursor: default;
}

.node-platform:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.15);
    border-color: #7c3aed;
}

.node-platform .node-icon {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.node-platform span {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}

.node-platform small {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ---- Data Layer ---- */
.arch-layer-data {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 50%, #fecaca 100%);
}

.tag-data {
    background: #ef4444;
    color: #fff;
}

.data-content {
    gap: 16px;
}

.node-data {
    background: #fff;
    border: 1.5px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    text-align: center;
    min-width: 140px;
    transition: all 0.3s ease;
    cursor: default;
}

.node-data:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.15);
    border-color: #ef4444;
}

.node-data .node-icon {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.node-data span {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}

.node-data small {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ---- External System Sidebar ---- */
.arch-external {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    box-shadow: var(--shadow-md);
    width: 160px;
}

.external-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text);
    text-align: center;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border);
    letter-spacing: 0.05em;
}

.external-items {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.external-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.external-item:hover {
    background: var(--primary-bg);
    color: var(--primary);
}

.ext-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}

/* ---- Architecture Responsive ---- */
@media (max-width: 1200px) {
    .arch-external {
        position: static;
        transform: none;
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        margin-top: 20px;
    }

    .external-items {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .arch-diagram {
        padding: 32px 24px;
    }
}

@media (max-width: 768px) {
    .arch-diagram {
        padding: 24px 16px;
    }

    .layer-header {
        padding: 12px 16px;
    }

    .layer-content {
        padding: 20px 16px;
        gap: 12px;
    }

    .biz-nodes {
        flex-direction: column;
    }

    .node-platform,
    .node-data {
        min-width: 120px;
        padding: 12px 14px;
    }

    .node-platform span,
    .node-data span {
        font-size: 0.78rem;
    }

    .arch-connector {
        display: none;
    }

    .access-content .arch-node {
        min-width: 100px;
        padding: 14px 16px;
    }
}

@media (max-width: 480px) {
    .business-content {
        flex-direction: column;
        gap: 12px;
    }

    .biz-group {
        min-width: auto;
    }

    .biz-nodes {
        flex-direction: row;
    }
}

/* ---------- Features Section ---------- */
.features {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-item {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature-item:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.feature-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-bg);
    line-height: 1;
    margin-bottom: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

.feature-item h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---------- Solutions Section ---------- */
.solutions {
    background: var(--bg);
}

.solutions-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 24px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: var(--primary-light);
    color: var(--primary);
}

.tab-btn.active {
    background: var(--gradient-1);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.solutions-content {
    position: relative;
    min-height: 320px;
}

.solution-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    animation: fadeIn 0.4s ease;
}

.solution-panel.active {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.solution-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.solution-text > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.solution-text ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.solution-text ul li {
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.check {
    color: var(--primary);
    font-weight: 700;
}

.solution-image {
    display: flex;
    justify-content: center;
}

.solution-illustration {
    width: 280px;
    height: 280px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.illust-icon {
    font-size: 5rem;
}

.manufacturing { background: linear-gradient(135deg, #eff6ff, #dbeafe); }
.service { background: linear-gradient(135deg, #f0fdf4, #dcfce7); }
.construction { background: linear-gradient(135deg, #fffbeb, #fef3c7); }
.flexible { background: linear-gradient(135deg, #faf5ff, #f3e8ff); }
.outsource { background: linear-gradient(135deg, #fff7ed, #ffedd5); }

/* ---------- Cases Section ---------- */
.cases {
    background: var(--bg-secondary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.case-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.case-avatar {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.3rem;
    color: #fff;
    flex-shrink: 0;
}

.case-avatar-1 { background: var(--gradient-1); }
.case-avatar-2 { background: var(--gradient-2); }
.case-avatar-3 { background: var(--gradient-3); }

.case-meta h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.case-meta span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.case-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-results {
    display: flex;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.result-item {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    flex: 1;
}

.result-num {
    display: block;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 2px;
}

/* ---------- About Section ---------- */
.about {
    background: var(--bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-numbers {
    display: flex;
    gap: 40px;
    margin-top: 32px;
}

.about-num {
    display: flex;
    flex-direction: column;
}

.num-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.num-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.about-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.about-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.about-card-icon {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.about-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.about-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ---------- CTA Section ---------- */
.cta {
    background: var(--gradient-1);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    top: -100px;
    right: -100px;
}

.cta::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    bottom: -80px;
    left: -80px;
}

.cta-content {
    text-align: center;
    color: #fff;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.05rem;
    opacity: 0.9;
    margin-bottom: 36px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---------- Contact Section ---------- */
.contact {
    background: var(--bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-info-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.contact-info-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Contact Form */
.contact-form {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--text);
    background: var(--bg-secondary);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.contact-form .btn-block {
    margin-top: 8px;
    padding: 14px;
    font-size: 1rem;
}

/* ---------- Footer ---------- */
.footer {
    background: var(--bg-dark);
    color: #cbd5e1;
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 20px 0 24px;
    max-width: 300px;
}

.footer-brand .logo {
    color: #fff;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
}

.footer-links h4 {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.85rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.8rem;
    color: #64748b;
}

.footer-bottom a {
    color: #94a3b8;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: #fff;
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-1);
    color: #fff;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
}

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success);
    color: #fff;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    animation: toastIn 0.4s ease, toastOut 0.4s ease 2.6s forwards;
    pointer-events: none;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to { opacity: 0; transform: translateX(-50%) translateY(-20px); }
}

/* ---------- Scroll Animations ---------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-visual {
        order: -1;
        max-width: 600px;
        margin: 0 auto;
    }

    .hero-title {
        font-size: 2.6rem;
    }

    .hero-content {
        text-align: center;
    }

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

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

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

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .solution-panel {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .solution-image {
        order: -1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .btn-nav {
        display: none;
    }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: #fff;
        justify-content: center;
        align-items: center;
        gap: 16px;
        z-index: 1000;
    }

    .nav-links.open .nav-link {
        font-size: 1.2rem;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-desc {
        font-size: 0.95rem;
    }

    .hero-stats {
        gap: 16px;
        flex-wrap: wrap;
    }

    .stat-number {
        font-size: 1.4rem;
    }

    .stat-divider {
        display: none;
    }

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

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

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

    .about-visual {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

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

    .contact-form {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .cta-actions {
        flex-direction: column;
    }

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