/* ===================================================================
 * 门户公共样式（基础变量 + 顶部导航 + 页脚）
 * 由 index.html 抽离，供 index/login/register/pay 四个页面共用。
 * 修改导航/页脚的外观只需改这一处。
 * =================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --gold: #e6b800;
    --gold-2: #ffd75e;
    --dark: #0e0e12;
    --dark-2: #16161d;
    --panel: #1c1c25;
    --line: #2c2c38;
    --text: #e8e8ea;
    --muted: #9a9aa6;
}
html, body { background: var(--dark); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 18px; }

/* ===== 顶部导航 ===== */
#top { position: sticky; top: 0; z-index: 100; background: rgba(14,14,18,.92); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 800; letter-spacing: 3px; color: var(--gold); }
.logo .logo-img { height: 58px; width: auto; display: block; }
.logo .mark { width: 34px; height: 34px; border-radius: 6px; background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #111; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.menu { display: flex; align-items: center; gap: 6px; }
.menu a { padding: 8px 18px; border-radius: 6px; font-size: 16px; color: var(--text); transition: .2s; }
.menu a:hover { color: var(--gold); background: rgba(230,184,0,.08); }
.menu a.active { color: var(--gold); }
.menu a.btn-play { background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #151515; font-weight: 700; }
.menu a.btn-play:hover { filter: brightness(1.08); }
.burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.burger span { width: 24px; height: 2px; background: var(--gold); }

/* ===== 页脚 ===== */
#footer { border-top: 1px solid var(--line); background: var(--dark-2); padding: 34px 0; margin-top: 40px; }
#footer .ft { display: flex; gap: 26px; flex-wrap: wrap; justify-content: space-between; }
#footer .brand { max-width: 320px; }
#footer .brand .logo { margin-bottom: 12px; }
#footer .brand p { font-size: 13px; color: var(--muted); line-height: 1.8; }
#footer .cols { display: flex; gap: 60px; flex-wrap: wrap; }
#footer .col h4 { font-size: 15px; color: #fff; margin-bottom: 12px; }
#footer .col a { display: block; font-size: 13px; color: var(--muted); padding: 5px 0; }
#footer .col a:hover { color: var(--gold); }
#footer .copy { width: 100%; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 12px; color: #6a6a76; line-height: 1.9; text-align: center; }

/* ===== 响应式（导航折叠） ===== */
@media (max-width: 768px) {
    .burger { display: flex; }
    .menu { position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--dark-2); border-bottom: 1px solid var(--line); padding: 10px 18px 18px; display: none; }
    .menu.open { display: flex; }
    .menu a { padding: 12px; border-radius: 6px; }
}