/* =========================================
   核心配色：回归附件原版高级金 (Premium Gold & Black)
   ========================================= */
:root {
    /* 附件原版高级金色值 */
    --primary-gold: #fcd34d;       /* 核心高级金 */
    --deep-gold: #d97706;          /* 深邃金 */
    
    /* 橙黄色系 (用于立即下载按钮) */
    --action-orange: #FF8C00;
    --action-orange-hover: #FFA500;

    /* 背景色：保持帝王黑底 */
    --bg-black: #0a0a0a;           /* 曜石黑 */
    --bg-card: #121212;            /* 卡片黑 */
    
    --text-white: #ffffff;
    --text-gray: #aaaaaa;
    --border-gold: #8B8352;        /* 质感暗金边框 */
    
    /* 蓝色按钮色值 (保留蓝色) */
    --tech-blue: #2563eb;
    --tech-blue-hover: #1d4ed8;
}

/* 全局重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* 强制锁定黑色背景 */
body.obsidian-dark { 
    background-color: var(--bg-black) !important; 
    color: var(--text-white); 
    font-family: 'Segoe UI', "Microsoft YaHei", sans-serif;
    line-height: 1.6;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.text-center { text-align: center; }
.mb-60 { margin-bottom: 60px; }
.mb-80 { margin-bottom: 80px; }

/* =========================================
   1. 导航栏 (修复横条悬停效果 & Logo升级)
   ========================================= */
/* 找到 .navbar，修改 border-bottom 这一行 */
.navbar {
    position: fixed; 
    width: 100%; 
    z-index: 1000;
    background: rgba(10, 10, 10, 0.98); 
    
    /* 【修改这里】把原来的 rgba(...) 改为 #fcd34d 或 var(--primary-gold) */
    border-bottom: 1px solid #fcd34d; 
    
    backdrop-filter: blur(12px); 
    height: 90px; 
    display: flex; 
    align-items: center;
}
.nav-flex { display: flex; justify-content: space-between; align-items: center; width: 100%; }

/* --- Logo 区域重塑 (大、并排、粗体) --- */
.logo { display: flex; align-items: center; gap: 15px; } /* 增加图标与文字间距 */
.logo i { color: var(--primary-gold); font-size: 42px; } /* 图标放大 */

.logo-text { 
    display: flex; 
    flex-direction: row; /* 关键：改为并排显示 */
    align-items: baseline; /* 底部对齐 */
    gap: 10px; /* 文字间距 */
}

.main-name { 
    font-size: 34px; /* 主字极大 */
    font-weight: 900; 
    color: #fff; /* 主字白色，形成层次 */
    line-height: 1; 
    font-family: "Microsoft YaHei", sans-serif;
    letter-spacing: 1px; 
}

.sub-name { 
    font-size: 18px; /* 副字加粗稍小 */
    font-weight: 900; /* 极粗黑体 */
    color: var(--primary-gold); /* 副字金色，形成对比 */
    text-transform: uppercase; 
    font-family: "Microsoft YaHei", sans-serif;
    letter-spacing: 1px;
    position: relative;
    top: -2px; /* 微调对齐 */
}

/* 导航链接 */
.nav-links { display: flex; list-style: none; gap: 40px; align-items: center; }

/* --- 修复导航链接布局与横线 --- */
.nav-links li {
    display: flex;
    align-items: center; /* 确保 li 内部垂直居中 */
}

.nav-links a.nav-link { 
    text-decoration: none; 
    color: #ccc; 
    font-weight: 700; 
    font-size: 16px;
    padding: 10px 0; 
    position: relative; /* 关键：给横线定位 */
    transition: color 0.3s; 
}

.nav-links a.nav-link:hover { color: #fcd34d; }

/* 核心：横线动画 */
.nav-links a.nav-link::after { 
    content: '';
    position: absolute; 
    width: 0; 
    height: 2px; 
    bottom: 0; /* 贴在底部 */
    left: 50%; 
    transform: translateX(-50%);
    background-color: #fcd34d; /* 高级金颜色 */
    transition: width 0.3s ease-in-out;
}

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

/* 2. 【新增】定义横线的样式 */
.nav-links a:not(.nav-btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #fcd34d; /* 使用您的高级金变量 var(--primary-gold) */
    transition: width 0.3s;
}

/* 3. 【新增】鼠标放上去横线变宽 */
.nav-links a:not(.nav-btn):hover::after {
    width: 100%;
}

/* 右上角立即下载按钮 - 位置修正版 */
/* --- 修复右上角按钮：位置上提 + 亮黄色 --- */
.nav-btn { 
    background: #FFD700 !important; /* 强制使用明黄色 */
    color: #000 !important;         /* 黑色文字 */
    padding: 10px 30px; 
    border-radius: 50px; 
    font-weight: 900; 
    text-decoration: none; 
    
    /* 核心位置修复 */
    display: inline-block; 
    vertical-align: middle;
    margin-top: -5px; /* 强制向上提 5px */
    
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.4);
    transition: 0.3s;
}

.nav-btn:hover { 
    background: #fff !important; 
    transform: scale(1.05); 
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
}

/* 悬停文字变色 */
.nav-links a.nav-link:hover { color: var(--primary-gold); }

/* 修复：悬停下方出现横条动画 */
.nav-links a.nav-link::after { 
    content: '';
    position: absolute; 
    width: 0; 
    height: 3px; 
    bottom: 0; 
    left: 50%; 
    transform: translateX(-50%);
    background-color: var(--primary-gold); 
    transition: width 0.3s ease-in-out;
}
.nav-links a.nav-link:hover::after { width: 100%; }

/* 传奇客服宝 - 高亮文字，但也保留横条效果 */
.nav-special { color: var(--primary-gold) !important; text-shadow: 0 0 8px rgba(252, 211, 77, 0.2); }

 

/* =========================================
   Hero Section (高级金视觉)
   ========================================= */
.hero { height: 100vh; display: flex; align-items: center; position: relative; background: var(--bg-black); overflow: hidden; }
.glow-bg { 
    position: absolute; inset: 0;
    /* 附件风格的光效背景 */
    background: radial-gradient(circle at 50% 50%, rgba(252, 211, 77, 0.1), transparent 75%);
}
.hero-center { position: relative; z-index: 10; text-align: center; width: 100%; }
.hero-title { font-size: 72px; font-weight: 950; color: #fff; line-height: 1.2; margin-bottom: 30px; letter-spacing: -2px; }

/* 附件原版渐变 */
.gold-gradient { 
    background: linear-gradient(to right, var(--primary-gold), var(--deep-gold));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; 
}

.hero-subtitle { font-size: 24px; color: #aaa; margin-bottom: 50px; }
.yellow-bold { color: var(--primary-gold); font-weight: 900; border-bottom: 2px solid var(--primary-gold); padding-bottom: 2px; }

/* 核心大按钮 */
.btn { display: inline-block; text-decoration: none; border-radius: 12px; font-weight: 950; transition: 0.4s; cursor: pointer; }

/* 金色按钮：使用附件的渐变色 */
.btn-gold-large { 
    background: linear-gradient(to right, var(--deep-gold), var(--primary-gold)); 
    color: #000; 
    padding: 22px 65px; font-size: 20px; 
    box-shadow: 0 10px 30px rgba(217, 119, 6, 0.3);
}
.btn-gold-large:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 15px 40px rgba(217, 119, 6, 0.5); 
}

/* 描边按钮 */
.btn-outline-large { 
    border: 2px solid #444; 
    color: #fff; 
    padding: 20px 55px; font-size: 20px; margin-left: 20px; 
    background: transparent;
}
.btn-outline-large:hover { 
    background: rgba(255, 255, 255, 0.05); 
    border-color: #fff;
}

/* 蓝色按钮 (恢复原版蓝色) */
.btn-blue-large { 
    background: var(--tech-blue); 
    color: #fff; 
    padding: 22px 65px; font-size: 20px; margin-left: 20px; 
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}
.btn-blue-large:hover { 
    background: var(--tech-blue-hover); 
    transform: translateY(-5px); 
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.5); 
}

/* =========================================
   内容板块 (布局修正核心)
   ========================================= */
.section-padding { padding: 120px 0; border-top: 1px solid #1a1a1a; }
.section-tag { font-size: 14px; letter-spacing: 6px; color: var(--primary-gold); font-weight: bold; margin-bottom: 15px; }
.section-main-title { font-size: 52px; font-weight: 900; color: #fff; }
.text-gold { color: var(--primary-gold); }

/* 基础 Flex 行设置 */
.flex-row { 
    display: flex; 
    align-items: center; 
    gap: 80px; 
    margin-bottom: 100px; 
}

/* 核心修正：强制覆盖 .reverse 类名 
   解释：HTML 中第二步带有 reverse 类名，通常会导致 flex-direction: row-reverse。
   为了让图片都在同一侧（右侧），我们强制所有 flex-row 都为 row 方向，忽略 HTML 中的 reverse。
*/
.flex-row.reverse { 
    flex-direction: row !important; 
}

.info-side { flex: 1; }
.info-side h3 { font-size: 36px; color: #fff; margin-bottom: 25px; }
.info-p { font-size: 18px; color: #aaa; margin-bottom: 30px; }
.tag-group span { display: block; margin-bottom: 12px; color: var(--primary-gold); font-weight: bold; font-size: 16px; }

/* 修复图片容器：确保图片清晰显示 */
.screenshot-box {
    flex: 1.3; 
    border: 4px solid #1e293b; 
    border-radius: 12px; 
    overflow: hidden; 
    background: #000; 
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    transition: 0.3s;
    position: relative;
}
.screenshot-box img { 
    width: 100%; 
    height: auto; 
    display: block; 
    opacity: 0.9; /* 默认轻微透明增加质感 */
    transition: 0.5s; 
}
.screenshot-box:hover img { 
    opacity: 1; /* 悬停全亮 */
    transform: scale(1.02); 
}
.quote-box { background: rgba(255, 215, 0, 0.05); border-left: 5px solid var(--primary-gold); padding: 25px; }

/* =========================================
   AI客服 & 其他
   ========================================= */
.ai-section { background: var(--bg-black); padding: 120px 0; border-top: 1px solid #1a1a1a; }
.ai-badge { 
    border: 1px solid var(--primary-gold); 
    color: var(--primary-gold); 
    background: rgba(252, 211, 77, 0.1);
    padding: 5px 15px; border-radius: 4px; font-weight: bold; font-size: 14px; 
}
.ai-title { font-size: 60px; font-weight: 900; color: #fff; margin: 25px 0; }
.ai-strong { font-size: 32px; color: #fff; font-weight: 800; margin-bottom: 20px; }
.ai-desc { font-size: 18px; color: #aaa; max-width: 800px; margin: 0 auto 50px; }
.ai-btns { display: flex; justify-content: center; gap: 20px; }
.ai-btn-gold { background: var(--primary-gold); color: #000; padding: 15px 45px; border-radius: 10px; font-weight: 900; text-decoration: none; }
.ai-btn-outline { border: 1px solid #444; color: #999; padding: 15px 45px; border-radius: 10px; text-decoration: none; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.glass-card { 
    background: rgba(30, 41, 59, 0.4); 
    backdrop-filter: blur(12px); 
    border: 1px solid rgba(255, 255, 255, 0.1); 
    padding: 40px; border-radius: 20px; text-align: center; transition: 0.3s; 
}
.glass-card:hover { 
    border-color: var(--primary-gold); 
    transform: translateY(-5px); 
    background: rgba(30, 41, 59, 0.6);
}
.glass-card b { display: block; font-size: 42px; color: var(--primary-gold); margin-bottom: 10px; }

.legend-title { font-size: 36px; color: white; font-weight: 800; margin-top: 50px; }
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 50px; }
.card-item { padding: 45px 30px; text-align: center; }
.card-item i { font-size: 45px; margin-bottom: 25px; color: var(--primary-gold); }

/* 下载卡片 */
.download-card { background: linear-gradient(135deg, #111, #080808); padding: 80px 40px; border-radius: 40px; border: 1px solid #333; text-align: center; }
.download-card:hover { border-color: var(--primary-gold); }

/* 页脚 */
.footer { padding: 100px 0; border-top: 1px solid #1a1a1a; text-align: center; background: #000; }
.footer-logo { font-size: 32px; font-weight: 950; color: #fff; margin-bottom: 20px; }
.footer-logo i { color: var(--primary-gold); margin-right: 12px; }
.copyright { color: #444; font-size: 12px; margin-top: 20px; }

@media (max-width: 1024px) {
    .hero-main-title { font-size: 48px; }
    .flex-row, .flex-row.reverse, .stats-grid, .cards-grid { grid-template-columns: 1fr; flex-direction: column !important; }
    .btn { margin-left: 0; margin-top: 15px; width: 100%; }
}