/* ============================================================
   homepage.css — 首页独立样式文件
   从 homepage.html 内联 <style> 提取整合
   ============================================================ */

/* Google Fonts 已移除（会阻塞国内手机端渲染导致白屏），改用系统字体 */

:root {
    --primary-green: #059669;
    --dark-green: #064e3b;
    --light-emerald: #ecfdf5;
    --accent-lime: #84cc16;
}

body {
    font-family: 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    scroll-behavior: smooth;
}

/* ── 导航栏玻璃效果 ── */
.glass-nav {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* ── 渐变色 ── */
.gradient-green-bg {
    background: linear-gradient(135deg, #064e3b 0%, #059669 100%);
}

.gradient-green-text {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ── 卡片悬浮动效 ── */
.card-hover {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(5, 150, 105, 0.1);
}

/* ── 模糊色块背景 ── */
.eco-blob {
    position: absolute;
    filter: blur(80px);
    z-index: -1;
    border-radius: 50%;
}

/* ── 自定义滚动条 ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #059669; border-radius: 10px; }

/* ── 响应式导航菜单（备用） ── */
.mobile-menu {
    display: none;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
}
.mobile-menu.active {
    transform: translateX(0);
}

/* ── 返回顶部按钮 ── */
.back-to-top {
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* ── 加载入场动画 ── */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── 按钮发光效果 ── */
.glow-btn:hover {
    box-shadow: 0 0 30px rgba(5, 150, 105, 0.4);
}

/* ── 卡片悬浮发光 ── */
.glow-card:hover {
    box-shadow: 0 0 40px rgba(16, 185, 129, 0.2);
}

/* ── 脉冲动画 ── */
@keyframes pulse-ring {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}
.pulse-ring::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: inherit;
    border: 2px solid currentColor;
    animation: pulse-ring 1.5s ease-out infinite;
}

/* ── 导航栏滚动态 ── */
nav.scrolled {
    background: rgba(255,255,255,0.98) !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}