/* ============================================
   白菜网项目 · 翠韵流香
   设计系统 — 田园现代主义 · 玻璃态 · 渐变流体
   ============================================ */

/* 基础重置 */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #FFFAF3;
    color: #2D3436;
    line-height: 1.6;
}

/* ===== CSS 自定义属性 ===== */
:root {
    --primary: #1A7D4A;
    --primary-light: #E8F5E9;
    --primary-dark: #0F5C33;
    --primary-glow: rgba(26, 125, 74, 0.15);
    --secondary: #FDBB7A;
    --secondary-light: #FFF0E0;
    --accent: #E86A7D;
    --accent-light: #FDE8EC;
    --bg: #FFFAF3;
    --bg-alt: #F5FBF7;
    --bg-card: rgba(255, 255, 255, 0.72);
    --text: #2D3436;
    --text-light: #636E72;
    --text-muted: #A0A8AE;
    --border: rgba(26, 125, 74, 0.12);
    --shadow-sm: 0 2px 12px rgba(26, 125, 74, 0.06);
    --shadow-md: 0 8px 32px rgba(26, 125, 74, 0.10);
    --shadow-lg: 0 16px 56px rgba(26, 125, 74, 0.14);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --glass-bg: rgba(255, 255, 255, 0.68);
    --glass-border: rgba(255, 255, 255, 0.45);
    --font-display: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== 核心布局 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--bg-alt);
}

/* 装饰性背景弧线 — 品牌识别 */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    opacity: 0.15;
    border-radius: 0 0 50% 50%;
    transform: scaleY(0.3);
}

.section:first-of-type::before {
    display: none;
}

/* ===== 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 1px 24px rgba(26, 125, 74, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--primary-dark);
    letter-spacing: -0.3px;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.02);
    color: var(--primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    color: var(--primary);
    box-shadow: 0 2px 8px var(--primary-glow);
    position: relative;
    overflow: hidden;
}

.logo-icon::after {
    content: '';
    position: absolute;
    inset: 2px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.4), transparent);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
    letter-spacing: 0.3px;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
    transition: var(--transition);
}

.main-nav a:hover {
    color: var(--primary);
}

.main-nav a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px !important;
    border-radius: 50px !important;
    color: #fff !important;
    font-weight: 600 !important;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 4px 16px var(--primary-glow);
    transition: var(--transition) !important;
    letter-spacing: 0;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.03) !important;
    box-shadow: 0 8px 28px var(--primary-glow) !important;
    color: #fff !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.menu-toggle:hover {
    background: var(--primary-light);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #FFFAF3 0%, #F0F7F0 40%, #E8F5E9 100%);
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 70%;
    height: 140%;
    background: radial-gradient(ellipse at 80% 50%, rgba(253, 187, 122, 0.12), transparent 60%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 50%;
    height: 80%;
    background: radial-gradient(ellipse at 30% 70%, rgba(26, 125, 74, 0.06), transparent 50%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    max-width: 640px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--secondary-light), var(--accent-light));
    color: var(--primary-dark);
    letter-spacing: 1.2px;
    text-transform: uppercase;
    border: 1px solid rgba(253, 187, 122, 0.25);
    box-shadow: 0 2px 12px rgba(253, 187, 122, 0.12);
}

.hero-eyebrow::before {
    content: '✦';
    font-size: 0.7rem;
    color: var(--secondary);
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    color: var(--primary-dark);
    letter-spacing: -1px;
    text-shadow: 0 2px 12px rgba(26, 125, 74, 0.06);
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.72;
    max-width: 540px;
    margin-bottom: 36px;
    line-height: 1.7;
    color: var(--text-light);
}

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

.hero-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image::before {
    content: '🥬';
    font-size: 8rem;
    opacity: 0.15;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    filter: blur(4px);
}

.hero-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 125, 74, 0.08), rgba(253, 187, 122, 0.08));
    border-radius: var(--radius-lg);
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
    mix-blend-mode: multiply;
    opacity: 0.85;
}

/* hero装饰形状 */
.hero-shape {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-glow), transparent);
    pointer-events: none;
}

.hero-shape-1 {
    width: 300px;
    height: 300px;
    top: -80px;
    right: -60px;
    opacity: 0.3;
}

.hero-shape-2 {
    width: 200px;
    height: 200px;
    bottom: 40px;
    left: -40px;
    opacity: 0.2;
    background: radial-gradient(circle, rgba(253, 187, 122, 0.25), transparent);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.92rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: var(--transition);
    letter-spacing: 0.2px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), transparent);
    opacity: 0;
    transition: var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px var(--primary-glow);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--primary-dark);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--primary-glow);
}

.btn-accent {
    background: linear-gradient(135deg, var(--secondary), #F9A85A);
    color: #fff;
    box-shadow: 0 4px 20px rgba(253, 187, 122, 0.3);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(253, 187, 122, 0.35);
}

/* ===== 标签/标题 ===== */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    margin-bottom: 14px;
    text-transform: uppercase;
    color: var(--primary);
    padding: 4px 16px;
    border-radius: 50px;
    background: var(--primary-light);
    border: 1px solid rgba(26, 125, 74, 0.08);
}

.section-label::before {
    content: '◆';
    font-size: 0.5rem;
    color: var(--secondary);
}

.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--primary-dark);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.section-desc {
    max-width: 640px;
    opacity: 0.7;
    margin-bottom: 48px;
    font-size: 1.05rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 卡片网格 ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: var(--radius);
    padding: 32px 28px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: var(--transition);
    border-radius: 0 0 4px 4px;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(26, 125, 74, 0.2);
}

.category-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.4rem;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    color: var(--primary);
    box-shadow: 0 2px 12px var(--primary-glow);
    transition: var(--transition);
}

.category-card:hover .card-icon {
    transform: scale(1.05) rotate(-3deg);
}

.category-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.category-card p {
    font-size: 0.9rem;
    opacity: 0.65;
    margin-bottom: 18px;
    line-height: 1.6;
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.card-link::after {
    content: '→';
    transition: var(--transition);
}

.card-link:hover {
    gap: 10px;
    color: var(--primary-dark);
}

.card-link:hover::after {
    transform: translateX(4px);
}

/* ===== 特性块 ===== */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--secondary-light), var(--primary-light));
    aspect-ratio: 4/3;
    position: relative;
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 125, 74, 0.04), rgba(253, 187, 122, 0.04));
    border-radius: var(--radius-lg);
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.feature-image:hover img {
    transform: scale(1.03);
}

.feature-text {
    padding: 8px 0;
}

.feature-text .section-label {
    margin-bottom: 12px;
}

.feature-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 16px;
    line-height: 1.25;
}

.feature-text p {
    opacity: 0.7;
    margin-bottom: 24px;
    line-height: 1.7;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text);
    border-bottom: 1px solid rgba(26, 125, 74, 0.04);
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: '✓';
    font-weight: 700;
    color: var(--primary);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: 50%;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* ===== 数据条 ===== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    text-align: center;
}

.stat-item {
    padding: 32px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 3px 3px 0 0;
    opacity: 0.3;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
}

.stat-item:hover::before {
    opacity: 1;
    left: 10%;
    right: 10%;
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-top: 8px;
    color: var(--text-light);
    font-weight: 500;
}

/* ===== 内容墙 ===== */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.content-wall-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(26, 125, 74, 0.15);
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

.content-wall-item:hover img {
    transform: scale(1.03);
}

.content-wall-body {
    padding: 24px;
}

.content-wall-body .tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 50px;
    background: var(--primary-light);
    color: var(--primary);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.content-wall-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.content-wall-body p {
    font-size: 0.88rem;
    opacity: 0.65;
    line-height: 1.6;
}

.content-wall-body .meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    font-size: 0.78rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    padding-top: 14px;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(26, 125, 74, 0.2);
    box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
    padding: 18px 24px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary-dark);
    font-size: 1rem;
    transition: var(--transition);
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
    color: var(--accent);
}

.faq-item .faq-answer {
    padding: 0 24px 18px;
    display: none;
    opacity: 0.72;
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--text-light);
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeInUp 0.35s ease;
}

.faq-item.open {
    background: var(--primary-light);
    border-color: rgba(26, 125, 74, 0.15);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== CTA横幅 ===== */
.cta-banner {
    padding: 72px 32px;
    text-align: center;
    border-radius: var(--radius-lg);
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #0F5C33);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(253, 187, 122, 0.12), transparent 60%);
    pointer-events: none;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 40%;
    height: 100%;
    background: radial-gradient(ellipse, rgba(232, 106, 125, 0.08), transparent 50%);
    pointer-events: none;
}

.cta-banner h2 {
    color: #fff;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 560px;
    margin: 0 auto 32px;
    font-size: 1.05rem;
    position: relative;
    z-index: 2;
    opacity: 0.85;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
    background: var(--secondary-light);
}

/* ===== 页脚 ===== */
.site-footer {
    padding: 64px 0 28px;
    background: linear-gradient(180deg, #F5FBF7, #EFF7F2);
    border-top: 1px solid var(--border);
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    opacity: 0.25;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.65;
    line-height: 1.7;
    max-width: 320px;
    color: var(--text-light);
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul a {
    text-decoration: none;
    color: var(--text-light);
    font-size: 0.88rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-col ul a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-col ul a::before {
    content: '—';
    color: var(--secondary);
    opacity: 0.3;
    font-size: 0.7rem;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.85rem;
    transition: var(--transition);
    text-decoration: none;
}

.footer-social a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}

/* ===== 工具类 ===== */
.text-accent {
    color: var(--primary);
}

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

.text-center .section-desc {
    margin-left: auto;
    margin-right: auto;
}

.seo-description {
    max-width: 640px;
    margin: 0 auto 48px;
    opacity: 0.7;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-light);
}

.mt-0 {
    margin-top: 0;
}

.mb-0 {
    margin-bottom: 0;
}

/* 装饰性分割线 */
.divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 3px;
    margin: 20px 0 32px;
}

.text-center .divider {
    margin-left: auto;
    margin-right: auto;
}

/* 圆角装饰元素 */
.deco-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 2px solid rgba(26, 125, 74, 0.06);
    position: absolute;
    pointer-events: none;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero h1 {
        font-size: 2.6rem;
    }

    .hero-image {
        aspect-ratio: 16/9;
        max-width: 600px;
        margin: 0 auto;
    }

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

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

@media (max-width: 768px) {
    .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .feature-block .feature-image {
        order: -1;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }

    .main-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        padding: 24px 32px;
        gap: 16px;
        border-bottom: 1px solid var(--glass-border);
        box-shadow: var(--shadow-md);
        animation: navSlideDown 0.3s ease;
    }

    .main-nav.open a {
        padding: 8px 0;
        font-size: 1rem;
    }

    .main-nav.open .nav-cta {
        text-align: center;
        margin-top: 8px;
    }

    @keyframes navSlideDown {
        from {
            opacity: 0;
            transform: translateY(-8px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero {
        min-height: 70vh;
    }

    .section {
        padding: 72px 0;
    }

    .cta-banner {
        padding: 48px 24px;
    }

    .cta-banner h2 {
        font-size: 1.8rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-buttons .btn {
        justify-content: center;
    }

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

    .section-title {
        font-size: 1.6rem;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .header-inner {
        height: 64px;
    }

    .container {
        padding: 0 16px;
    }

    .section {
        padding: 56px 0;
    }

    .footer-bottom {
        font-size: 0.78rem;
    }

    .logo {
        font-size: 1.05rem;
    }

    .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 1.1rem;
    }
}

/* ===== 选中文本高亮 ===== */
::selection {
    background: var(--primary);
    color: #fff;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ===== 打印样式 ===== */
@media print {
    .site-header {
        position: relative;
        box-shadow: none;
        border-bottom: 1px solid #ddd;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
        background: #fff;
    }

    .hero-image {
        box-shadow: none;
        border: 1px solid #eee;
    }

    .btn,
    .nav-cta,
    .cta-banner .btn-primary {
        box-shadow: none;
        border: 1px solid #999;
        color: #333;
        background: #fff;
    }

    .section::before {
        display: none;
    }

    .category-card:hover,
    .content-wall-item:hover {
        transform: none;
        box-shadow: none;
    }

    .footer-social {
        display: none;
    }
}