```css
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --bg: #f8f9fc;
    --text: #1a1a2e;
    --primary: #2d6a4f;
    --secondary: #40916c;
    --accent: #52b788;
    --light: #d8f3dc;
    --glass: rgba(255,255,255,0.7);
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --radius: 20px;
    --max-w: 1200px;
    --nav-bg: rgba(255,255,255,0.85);
    --card-bg: #fff;
    --border: rgba(0,0,0,0.06);
    --gradient1: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient2: linear-gradient(135deg, #2d6a4f 0%, #40916c 100%);
}
[data-theme="dark"] {
    --bg: #0f0f1a;
    --text: #e0e0e0;
    --primary: #52b788;
    --secondary: #40916c;
    --accent: #2d6a4f;
    --light: #1a2e1a;
    --glass: rgba(20,20,40,0.8);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --nav-bg: rgba(15,15,26,0.9);
    --card-bg: #1a1a2e;
    --border: rgba(255,255,255,0.08);
    --gradient1: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 100%);
    --gradient2: linear-gradient(135deg, #1a3a2a 0%, #2d6a4f 100%);
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background 0.4s, color 0.4s;
}
a {
    color: var(--primary);
    text-decoration: none;
}
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background 0.4s;
}
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 24px;
    max-width: var(--max-w);
    margin: 0 auto;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--primary);
}
.logo svg {
    width: 36px;
    height: 36px;
}
.nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
}
.nav-links a {
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    transition: all 0.3s;
}
.nav-links a:hover, .nav-links a.active {
    background: var(--primary);
    color: #fff;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    transition: background 0.3s;
    font-size: 1.2rem;
}
.theme-toggle:hover {
    background: var(--border);
}
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text);
    font-size: 1.5rem;
}
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg);
    border-radius: 12px;
    padding: 4px 12px;
    border: 1px solid var(--border);
}
.search-box input {
    background: none;
    border: none;
    outline: none;
    padding: 6px;
    font-size: 0.9rem;
    color: var(--text);
    width: 140px;
}
.search-box button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
}
@media (max-width: 900px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open {
        display: flex;
    }
    .menu-toggle {
        display: block;
    }
    .search-box input {
        width: 100px;
    }
}
section {
    padding: 100px 0;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.section-subtitle {
    font-size: 1.1rem;
    color: var(--secondary);
    margin-bottom: 48px;
    max-width: 600px;
}
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}
.btn-primary {
    background: var(--gradient2);
    color: #fff;
    box-shadow: 0 4px 15px rgba(45,106,79,0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(45,106,79,0.4);
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}
.text-center {
    text-align: center;
}
.mb-16 {
    margin-bottom: 16px;
}
.mb-32 {
    margin-bottom: 32px;
}
.mb-48 {
    margin-bottom: 48px;
}
.mt-32 {
    margin-top: 32px;
}
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.gap-16 {
    gap: 16px;
}
.gap-24 {
    gap: 24px;
}
.flex-wrap {
    flex-wrap: wrap;
}
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient1);
    color: #fff;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(82,183,136,0.15) 0%, transparent 60%);
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 500px;
    margin-bottom: 32px;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-visual svg {
    width: 100%;
    max-width: 500px;
    height: auto;
}
.banner-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}
.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.3s;
}
.banner-dot.active {
    background: var(--accent);
    width: 36px;
    border-radius: 6px;
}
@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
    .grid-4 {
        grid-template-columns: 1fr 1fr;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    section {
        padding: 60px 0;
    }
}
.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
}
.stat-label {
    font-size: 0.95rem;
    color: var(--secondary);
}
.faq-item {
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    cursor: pointer;
}
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s;
    color: var(--secondary);
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding-top: 16px;
}
.faq-icon {
    transition: transform 0.3s;
}
.faq-item.open .faq-icon {
    transform: rotate(180deg);
}
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s;
    z-index: 999;
}
.back-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-top:hover {
    transform: scale(1.1);
}
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}
.lazy-svg {
    opacity: 0;
    transition: opacity 0.6s;
}
.lazy-svg.loaded {
    opacity: 1;
}
footer {
    background: var(--gradient1);
    color: #ccc;
    padding: 60px 0 30px;
}
footer a {
    color: #aaa;
    transition: color 0.3s;
}
footer a:hover {
    color: var(--accent);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
}
.breadcrumb {
    display: flex;
    gap: 8px;
    padding: 16px 0;
    font-size: 0.9rem;
    color: var(--secondary);
}
.breadcrumb a {
    color: var(--primary);
}
.theme-toggle svg {
    width: 22px;
    height: 22px;
}
.tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    background: var(--light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 500;
}
.avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.4rem;
}
.rating {
    color: #f4b942;
}
.news-card img, .case-card img {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 16px;
}
.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 40px;
}
.pagination a {
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text);
}
.pagination a.active {
    background: var(--primary);
    color: #fff;
}
.related-articles {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 24px;
    margin-top: 32px;
}
@media (max-width: 768px) {
    .related-articles {
        grid-template-columns: 1fr;
    }
}
```