/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0d4f1c;
    --secondary-color: #1a7a2e;
    --accent-color: #ffd700;
    --dark-bg: #0a1a0f;
    --card-bg: #1a2e1f;
    --text-light: #e8f5e9;
    --text-dark: #2d4a35;
    --border-color: #2d5a3d;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0f2a15 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header e Navegação */
header {
    background: var(--primary-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.logo h1 {
    color: var(--accent-color);
    font-size: 1.8rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-menu a:hover {
    color: var(--accent-color);
    background: rgba(255, 215, 0, 0.1);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
    background: linear-gradient(rgba(13, 79, 28, 0.8), rgba(10, 26, 15, 0.9)), url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%230a1a0f" width="1200" height="600"/></svg>');
    background-size: cover;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-light);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    margin-top: 2rem;
}

/* Sections */
section {
    padding: 3rem 0;
}

section h2 {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

section h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Intro Section */
.intro {
    background: var(--card-bg);
    margin: 2rem auto;
    border-radius: 10px;
    padding: 2rem;
    max-width: 1000px;
}

.intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.content-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem auto;
    display: block;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* Feature Grid */
.features {
    background: rgba(26, 46, 31, 0.5);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-color);
}

.feature-card h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.feature-card p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.feature-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-top: 1rem;
}

/* Strategy Preview */
.strategy-preview {
    background: var(--card-bg);
    margin: 2rem auto;
    border-radius: 10px;
    padding: 2rem;
    max-width: 1000px;
}

.strategy-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.tip {
    background: rgba(13, 79, 28, 0.3);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.tip h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* Terminology */
.terminology {
    background: rgba(26, 46, 31, 0.5);
}

.term-list {
    max-width: 900px;
    margin: 0 auto;
}

.term-item {
    background: var(--card-bg);
    padding: 1.2rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
    transition: transform 0.2s;
}

.term-item:hover {
    transform: translateX(5px);
    border-left-color: var(--accent-color);
}

.term-item strong {
    color: var(--accent-color);
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* CTA Section */
.cta {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 4rem 0;
    margin-top: 3rem;
}

.cta h2 {
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--accent-color);
    color: var(--dark-bg);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
}

/* Footer */
footer {
    background: var(--dark-bg);
    padding: 2rem 0;
    text-align: center;
    border-top: 2px solid var(--border-color);
    margin-top: 3rem;
}

footer p {
    margin-bottom: 0.5rem;
    color: var(--text-light);
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    section h2 {
        font-size: 1.5rem;
    }

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

    .strategy-tips {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 90%;
        max-width: 300px;
    }

    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }

    .logo h1 {
        font-size: 1.3rem;
    }

    section {
        padding: 2rem 0;
    }
}

/* SEO优化 - 图片加载 */
img {
    loading: lazy;
    alt: "";
}

/* 打印样式 */
@media print {
    .navbar,
    .hamburger,
    .cta,
    footer {
        display: none;
    }
}