:root {
    --ink-green: #2D4A3E;
    --forest-green: #3E6B4F;
    --jade-green: #4A7C59;
    --bamboo-green: #5B8C5A;
    --emerald: #2E8B57;
    --light-green: #8FBC8F;
    --pale-green: #C1D5C1;
    --cream: #F5F7F2;
    --paper: #F8FAF5;
}

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

body {
    font-family: "Microsoft YaHei", "SimSun", "Noto Serif SC", serif;
    background: linear-gradient(135deg, var(--cream) 0%, #EBF0E4 50%, #E2E8D9 100%);
    min-height: 100vh;
    color: var(--ink-green);
    line-height: 1.8;
}

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

nav {
    background: linear-gradient(180deg, rgba(45, 74, 62, 0.95) 0%, rgba(45, 74, 62, 0.9) 100%);
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(45, 74, 62, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    color: var(--cream);
    letter-spacing: 0.2em;
    font-weight: bold;
}

.logo:hover {
    color: var(--light-green);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--pale-green);
    text-decoration: none;
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    padding: 8px 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(143, 188, 143, 0.2);
    color: var(--cream);
}

header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(180deg, rgba(45, 74, 62, 0.08) 0%, transparent 100%);
    border-bottom: 2px solid rgba(74, 124, 89, 0.2);
    margin-bottom: 40px;
}

h1 {
    font-size: 3rem;
    color: var(--ink-green);
    letter-spacing: 0.3em;
    text-shadow: 2px 2px 4px rgba(45, 74, 62, 0.1);
    margin-bottom: 15px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--jade-green);
    letter-spacing: 0.2em;
}

.decorative-line {
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--emerald), transparent);
    margin: 20px auto;
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px 0;
    gap: 15px;
}

.section-divider span {
    color: var(--bamboo-green);
    font-size: 1rem;
}

.section-divider::before,
.section-divider::after {
    content: "";
    width: 50px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--jade-green));
}

.section-divider::after {
    background: linear-gradient(90deg, var(--jade-green), transparent);
}

.card {
    background: linear-gradient(145deg, var(--paper) 0%, #F0F4EB 100%);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(45, 74, 62, 0.1);
    border: 1px solid rgba(91, 140, 90, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(45, 74, 62, 0.18);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 3px solid var(--pale-green);
    background-color: var(--tw-ring-color);
}

.card-content {
    padding: 20px;
}

.card-title {
    font-size: 1.4rem;
    color: var(--ink-green);
    margin-bottom: 10px;
    letter-spacing: 0.1em;
    padding-bottom: 8px;
    border-bottom: 1px dashed var(--pale-green);
}

.card-desc {
    font-size: 0.95rem;
    color: var(--forest-green);
    line-height: 1.7;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    background: linear-gradient(135deg, var(--jade-green) 0%, var(--emerald) 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
    margin-top: 15px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(74, 124, 89, 0.4);
}

footer {
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    border-top: 2px solid rgba(74, 124, 89, 0.15);
    background: linear-gradient(0deg, rgba(45, 74, 62, 0.06) 0%, transparent 100%);
}

footer p {
    color: var(--jade-green);
    font-size: 0.95rem;
    letter-spacing: 0.1em;
}

footer .copyright {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--bamboo-green);
    opacity: 0.7;
}

@media (max-width: 768px) {
    nav {
        padding: 12px 15px;
    }

    .nav-links {
        gap: 15px;
    }

    .nav-links a {
        font-size: 0.95rem;
        padding: 6px 10px;
    }

    h1 {
        font-size: 2.2rem;
        letter-spacing: 0.2em;
    }

    .subtitle {
        font-size: 1rem;
    }

    header {
        padding: 40px 15px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }

    .nav-links {
        gap: 10px;
    }

    .nav-links a {
        font-size: 0.85rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    .card-image {
        height: 180px;
    }
}