:root {
    --primary: #E85A3D;
    --primary-dark: #D14A2D;
    --primary-light: #FFF5F3;
    --text-dark: #1A1A1A;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-white: #FFFFFF;
    --bg-light: #FAFAFA;
    --border: #EEEEEE;
    --shadow: 0 4px 20px rgba(232, 90, 61, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

@media (max-width: 768px) { html { font-size: 14px; } }

.page-wrap { min-height: 100vh; display: flex; flex-direction: column; }
.page-wrap footer { margin-top: auto; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

/* Header */
header {
    background: var(--bg-white);
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
header .container { display: flex; align-items: center; justify-content: space-between; height: 60px; }
@media (max-width: 768px) { header .container { height: 56px; } }

.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--text-dark); text-decoration: none; }
.logo-icon { width: 36px; height: 36px; background: var(--primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-size: 20px; font-weight: 800; }
@media (max-width: 768px) { .logo-icon { width: 32px; height: 32px; font-size: 16px; } .logo { font-size: 18px; } }

.menu-toggle { display: none; }  /* 不再需要汉堡菜单 */

@media (max-width: 768px) {
    nav { display: flex; align-items: center; gap: 12px; }
    nav a { display: inline; padding: 0; margin: 0 !important; border: none; font-size: 14px; white-space: nowrap; }
}
nav a { color: var(--text-gray); text-decoration: none; margin-left: 32px; font-size: 15px; font-weight: 500; transition: color .2s; }
nav a:hover { color: var(--primary); }

/* Page Header */
.page-hero { padding: 120px 0 60px; background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg-white) 100%); text-align: center; }
.page-hero h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--text-gray); max-width: 500px; margin: 0 auto; }
@media (max-width: 768px) { .page-hero { padding: 100px 0 40px; } .page-hero h1 { font-size: 26px; } }

/* Content */
.page-content { padding: 60px 0 80px; max-width: 800px; margin: 0 auto; }
@media (max-width: 768px) { .page-content { padding: 40px 0 60px; } }

.page-content h2 { font-size: 22px; font-weight: 700; color: var(--primary); margin: 40px 0 16px; }
.page-content h2:first-child { margin-top: 0; }
.page-content h3 { font-size: 18px; font-weight: 600; margin: 24px 0 12px; }
.page-content p { font-size: 15px; color: var(--text-gray); line-height: 1.8; margin-bottom: 16px; }
.page-content ul { margin: 12px 0 16px; padding-left: 24px; }
.page-content li { font-size: 15px; color: var(--text-gray); line-height: 1.8; margin-bottom: 8px; }
.page-content strong { color: var(--text-dark); }

/* Table */
.page-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 24px;
    font-size: 14px;
}
.page-content th {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    text-align: left;
    padding: 10px 14px;
    border: 1px solid var(--border);
}
.page-content td {
    padding: 10px 14px;
    border: 1px solid var(--border);
    color: var(--text-gray);
    line-height: 1.7;
}
.page-content tr:nth-child(even) td {
    background: var(--bg-light);
}
@media (max-width: 768px) {
    .page-content table { font-size: 13px; }
    .page-content th, .page-content td { padding: 8px 10px; }
}

/* Footer */
footer { background: #1A1A1A; color: #888; padding: 60px 0 24px; }
@media (max-width: 768px) { footer { padding: 40px 0 20px; } }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }
.footer-brand .logo { color: white; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer-col h4 { color: white; font-size: 14px; font-weight: 600; margin-bottom: 16px; text-transform: uppercase; letter-spacing: .5px; }
.footer-col a { display: block; color: #888; text-decoration: none; font-size: 14px; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: white; }
.footer-bottom { border-top: 1px solid #333; padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
@media (max-width: 640px) { .footer-bottom { flex-direction: column; text-align: center; } }
.footer-bottom p { font-size: 13px; }
.footer-bottom a { color: #888; text-decoration: none; margin-left: 24px; font-size: 13px; }
@media (max-width: 640px) { .footer-bottom a { margin: 0 12px; } }