/* Wansen Luxury V3.0 (Final Complete Edition) - style.css */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Open+Sans:wght@400;600&display=swap');

:root {
    --primary: #0f172a; 
    --dark-blue: #020617;
    --gold: linear-gradient(135deg, #b45309 0%, #d97706 50%, #f59e0b 100%);
    --gold-text: #d97706;
    --light: #f8fafc;
    --white: #ffffff;
    --shadow: 0 10px 30px -10px rgba(0,0,0,0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Open Sans', sans-serif; background-color: var(--light); color: #334155; line-height: 1.7; overflow-x: hidden; }
a { text-decoration: none; transition: all 0.3s ease; }
img { max-width: 100%; height: auto; display: block; }

/* --- 导航栏与LOGO --- */
header { 
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.8rem 5%; 
    position: sticky; top: 0; z-index: 1000; 
    display: flex; justify-content: space-between; align-items: center; 
    border-bottom: 1px solid rgba(255,255,255,0.1); 
}

.nav-logo img {
    height: 55px; /* 电脑端 Logo 高度 */
    width: auto;
    display: block;
    transition: transform 0.3s ease;
}
.nav-logo:hover img { transform: scale(1.03); }

nav a { font-family: 'Montserrat', sans-serif; color: #cbd5e1; margin-left: 2rem; font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; position: relative; }
nav a:hover, nav a.active { color: var(--white); }
nav a::after { content: ''; position: absolute; width: 0; height: 2px; background: var(--gold-text); bottom: -5px; left: 0; transition: 0.3s; }
nav a:hover::after, nav a.active::after { width: 100%; }

/* --- 按钮 --- */
.btn { display: inline-block; padding: 1rem 2.5rem; background: var(--gold); color: var(--white); border-radius: 50px; font-weight: 700; font-family: 'Montserrat', sans-serif; text-transform: uppercase; letter-spacing: 1px; border: none; cursor: pointer; box-shadow: 0 4px 15px rgba(217, 119, 6, 0.3); }
.btn:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(217, 119, 6, 0.5); }
.btn-outline { background: transparent; border: 2px solid var(--gold-text); color: var(--gold-text); border-radius: 50px; padding: 0.8rem 2rem; font-weight: 700; font-family: 'Montserrat', sans-serif; text-transform: uppercase; letter-spacing: 1px;}
.btn-outline:hover { background: var(--gold); color: white; border-color: transparent; }
.btn-download { background: #e2e8f0; color: #334155; padding: 0.8rem 1.5rem; border-radius: 8px; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 10px; font-weight: 600; border: 1px solid #cbd5e1; }
.btn-download:hover { background: #cbd5e1; color: #0f172a; transform: translateY(-2px); }

/* --- 通用布局 --- */
.hero { height: 85vh; background-size: cover; background-position: center; background-attachment: fixed; display: flex; align-items: center; justify-content: center; text-align: center; color: var(--white); padding: 0 2rem; }
.section { padding: 6rem 8%; }
.container { max-width: 1200px; margin: 0 auto; }
h1 { font-family: 'Montserrat', sans-serif; font-size: 3.5rem; font-weight: 800; margin-bottom: 1.5rem; line-height: 1.2; text-shadow: 0 2px 15px rgba(0,0,0,0.6); }
h2 { font-family: 'Montserrat', sans-serif; font-size: 2.5rem; margin-bottom: 1.5rem; color: var(--primary); font-weight: 800; text-align: center; }
.subtitle { text-align: center; color: #64748b; margin-bottom: 4rem; font-size: 1.1rem; max-width: 800px; margin-left: auto; margin-right: auto; }

/* --- 卡片网格 --- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.card { background: var(--white); padding: 3rem 2rem; border-radius: 16px; box-shadow: var(--shadow); transition: 0.4s ease; position: relative; overflow: hidden; border: 1px solid #f1f5f9; }
.card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.card-icon { font-size: 3rem; margin-bottom: 1.5rem; color: var(--gold-text); }

/* --- 页脚 --- */
footer { background: var(--dark-blue); color: #94a3b8; padding: 5rem 5% 2rem; font-size: 0.95rem; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 3rem; margin-bottom: 3rem; }
.footer-col h4 { color: var(--white); margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 1px; font-weight: 700; }
.footer-links p, .footer-links a { margin-bottom: 0.8rem; display: block; color: #cbd5e1; }
.footer-links a:hover { color: var(--gold-text); padding-left: 5px; }
.footer-links i { width: 25px; color: var(--gold-text); }

/* --- 悬浮球 --- */
.float-wa { position: fixed; bottom: 30px; right: 30px; background: #25D366; color: white; width: 60px; height: 60px; border-radius: 50%; text-align: center; font-size: 32px; line-height: 60px; box-shadow: 0 10px 20px rgba(37, 211, 102, 0.4); z-index: 2000; transition: 0.3s; }
.float-wa:hover { transform: scale(1.1) rotate(10deg); }

/* --- 手机端适配 --- */
@media (max-width: 768px) {
    header { flex-direction: column; padding: 1rem 5%; gap: 1rem; }
    .nav-logo img { height: 45px; } /* 手机端Logo稍微缩小 */
    nav { flex-wrap: wrap; justify-content: center; gap: 0.8rem; width: 100%; }
    nav a { margin: 0 0.5rem; font-size: 0.8rem; }
    .hero { height: 65vh; }
    h1 { font-size: 2.2rem; }
    .grid-2 { grid-template-columns: 1fr; gap: 2.5rem; }
    .btn, .btn-outline { width: 100%; text-align: center; margin-left: 0 !important; margin-top: 1rem; }
    .section { padding: 4rem 5%; }
}