/* --- 1. 全局样式 (Global Styles) --- */
:root {
    --primary-color: #1e40af; /* 深蓝色 */
    --secondary-color: #3b82f6; /* 亮蓝色 */
    --bg-color: #f8fafc; /* 浅灰背景 */
    --text-main: #1e293b;
    --text-sub: #64748b;
    --white: #ffffff;
    --border: #e2e8f0;
    --band-green: #03c75a; /* Band 品牌绿 */
}

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

body {
    font-family: 'Noto Sans KR', sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.bg-light { background-color: var(--bg-color); }
.text-center { text-align: center; }

/* 按钮样式 (Button Styles) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--band-green);
    color: var(--white);
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 700;
    transition: background 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    gap: 10px;
    text-decoration: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.btn:hover { background-color: #02b351; transform: translateY(-2px); }
.btn img { width: 24px; height: 24px; object-fit: contain; }

/* --- 2. 头部导航 (Header) --- */
header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.98);
    z-index: 1000;
}
.nav-flex { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.3rem; font-weight: 800; color: var(--primary-color); }

/* --- 3. Hero 区域 --- */
.hero {
    padding: 120px 0;
    text-align: center;
    /* 背景图片设置 */
    background-image: url('../img/11.jpg'); /* 请确保图片文件名为 stock-bg.jpg */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    color: var(--white);
}

/* 半透明遮罩层 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.7); /* 深蓝色半透明遮罩 */
    z-index: 1;
}

.hero .container { position: relative; z-index: 2; }

.badge {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 25px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
.hero h1 { font-size: 3rem; margin-bottom: 20px; line-height: 1.3; letter-spacing: -1px; }
.hero p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    word-break: keep-all;
}

/* --- 4. 市场行情条 --- */
.ticker-wrap { background: #0f172a; color: white; padding: 15px 0; }
.ticker-content { display: flex; justify-content: center; gap: 30px; font-size: 0.9rem; }
.ticker-item span { font-weight: bold; margin-left: 5px; }
.up { color: #f87171; }
.down { color: #4ade80; }

/* --- 5. 核心优势 --- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}
.feature-card {
    background: var(--white);
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    transition: transform 0.2s;
}
.feature-card:hover { transform: translateY(-5px); border-color: var(--secondary-color); }
.feature-card h3 { color: var(--primary-color); margin-bottom: 15px; font-size: 1.3rem; }
.feature-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-sub);
}
.feature-list li::before {
    content: "✔";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* --- 6. 评价与日程 --- */
.review-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    border: 1px solid var(--border);
}
.review-author { margin-top: 15px; font-weight: bold; color: var(--primary-color); font-size: 0.9rem; }

.schedule-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 30px;
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.schedule-table th, .schedule-table td {
    padding: 18px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
.schedule-table th { background-color: #f1f5f9; color: var(--text-main); font-weight: 700; }

/* --- 7. FAQ --- */
.faq-item { border-bottom: 1px solid var(--border); padding: 25px 0; }
.faq-question { font-weight: 700; font-size: 1.1rem; margin-bottom: 10px; cursor: pointer; color: var(--text-main); }
.faq-answer { color: var(--text-sub); font-size: 0.95rem; line-height: 1.7; }

/* --- 8. 页脚 --- */
footer { background-color: #1e293b; color: #94a3b8; padding: 60px 0 30px; font-size: 0.85rem; }
.disclaimer-box {
    border: 1px solid #334155;
    padding: 20px;
    margin-top: 30px;
    border-radius: 8px;
    background: #0f172a;
    line-height: 1.6;
    text-align: left;
}

/* --- 9. 底部悬浮按钮 --- */
.sticky-btn-wrapper {
    position: fixed; bottom: 20px; left: 0; width: 100%; z-index: 999;
    padding: 0 20px; display: flex; justify-content: center;
}
.sticky-btn-wrapper .btn {
    width: 100%; max-width: 500px; padding: 16px; font-size: 1.1rem;
    box-shadow: 0 10px 25px rgba(3, 199, 90, 0.4);
}

/* 响应式 */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .ticker-content { flex-direction: column; text-align: center; gap: 10px; }
    header .btn { display: none; }
}
@media (min-width: 769px) { .sticky-btn-wrapper { display: none; } }