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

/* ================================================================
   主题变量：切换 <html data-theme="..."> 即可整站换肤
   ================================================================ */

:root,
[data-theme="dark"]{
  --bg:#0e1320;
  --card:#171e2e;
  --card2:#1f2840;
  --text:#e8eefc;
  --muted:#94a3b8;
  --accent:#ff8a1f;
  --accent2:#ff5a1f;
  --cyan:#2fd4d0;
  --border:rgba(255,255,255,.06);
  --border-soft:rgba(255,255,255,.05);
  --border-strong:rgba(255,255,255,.1);
  --header-bg:rgba(14,19,32,.85);
  --hover-text:#fff;
  --shadow-card:0 12px 30px rgba(0,0,0,.45);
  --shadow-top:0 8px 20px rgba(255,90,31,.35);
  --thumb-bg:linear-gradient(135deg,#23304a,#1a2233);
  --accent-soft:rgba(255,138,31,.12);
  --accent-hover:rgba(255,138,31,.08);
  --accent-border:rgba(255,138,31,.3);
}

[data-theme="midnight"]{
  --bg:#141b2d;
  --card:#1c2540;
  --card2:#24304d;
  --text:#dde5f5;
  --muted:#8b9ab5;
  --accent:#6ba5ff;
  --accent2:#4d7dff;
  --cyan:#6dd5ed;
  --border:rgba(255,255,255,.06);
  --border-soft:rgba(255,255,255,.05);
  --border-strong:rgba(255,255,255,.1);
  --header-bg:rgba(20,27,45,.85);
  --hover-text:#fff;
  --shadow-card:0 12px 30px rgba(0,0,0,.45);
  --shadow-top:0 8px 20px rgba(77,125,255,.35);
  --thumb-bg:linear-gradient(135deg,#2a3758,#1c2540);
  --accent-soft:rgba(107,165,255,.14);
  --accent-hover:rgba(107,165,255,.1);
  --accent-border:rgba(107,165,255,.3);
}

[data-theme="charcoal"]{
  --bg:#1a1a1a;
  --card:#262626;
  --card2:#333333;
  --text:#e5e5e5;
  --muted:#a3a3a3;
  --accent:#fbbf24;
  --accent2:#f59e0b;
  --cyan:#38bdf8;
  --border:rgba(255,255,255,.06);
  --border-soft:rgba(255,255,255,.05);
  --border-strong:rgba(255,255,255,.1);
  --header-bg:rgba(26,26,26,.85);
  --hover-text:#fff;
  --shadow-card:0 12px 30px rgba(0,0,0,.5);
  --shadow-top:0 8px 20px rgba(245,158,11,.35);
  --thumb-bg:linear-gradient(135deg,#333,#222);
  --accent-soft:rgba(251,191,36,.12);
  --accent-hover:rgba(251,191,36,.1);
  --accent-border:rgba(251,191,36,.3);
}

[data-theme="paper"]{
  --bg:#f5efe0;
  --card:#fdf8ed;
  --card2:#ede4cf;
  --text:#3a2e1f;
  --muted:#7a6a52;
  --accent:#b45309;
  --accent2:#d97706;
  --cyan:#0e7490;
  --border:rgba(58,46,31,.08);
  --border-soft:rgba(58,46,31,.06);
  --border-strong:rgba(58,46,31,.14);
  --header-bg:rgba(245,239,224,.92);
  --hover-text:#1a1410;
  --shadow-card:0 12px 30px rgba(58,46,31,.1);
  --shadow-top:0 8px 20px rgba(180,83,9,.25);
  --thumb-bg:linear-gradient(135deg,#e8dcc0,#d9c9a3);
  --accent-soft:rgba(180,83,9,.1);
  --accent-hover:rgba(180,83,9,.06);
  --accent-border:rgba(180,83,9,.28);
}

[data-theme="eye-care"]{
  --bg:#c7edcc;
  --card:#e6f4e6;
  --card2:#d9ebd9;
  --text:#1a3320;
  --muted:#5a7560;
  --accent:#2e7d32;
  --accent2:#43a047;
  --cyan:#00897b;
  --border:rgba(26,51,32,.08);
  --border-soft:rgba(26,51,32,.06);
  --border-strong:rgba(26,51,32,.14);
  --header-bg:rgba(199,237,204,.92);
  --hover-text:#0f1f12;
  --shadow-card:0 12px 30px rgba(46,125,50,.12);
  --shadow-top:0 8px 20px rgba(46,125,50,.3);
  --thumb-bg:linear-gradient(135deg,#d0e8d0,#b8d9b8);
  --accent-soft:rgba(46,125,50,.1);
  --accent-hover:rgba(46,125,50,.06);
  --accent-border:rgba(46,125,50,.28);
}

[data-theme="light"]{
  --bg:#f7f9fc;
  --card:#ffffff;
  --card2:#eef2f7;
  --text:#1f2937;
  --muted:#64748b;
  --accent:#ff5a1f;
  --accent2:#ea580c;
  --cyan:#0ea5e9;
  --border:rgba(0,0,0,.06);
  --border-soft:rgba(0,0,0,.04);
  --border-strong:rgba(0,0,0,.1);
  --header-bg:rgba(247,249,252,.92);
  --hover-text:#0f172a;
  --shadow-card:0 12px 30px rgba(15,23,42,.08);
  --shadow-top:0 8px 20px rgba(255,90,31,.28);
  --thumb-bg:linear-gradient(135deg,#dde6f0,#c9d6e6);
  --accent-soft:rgba(255,90,31,.1);
  --accent-hover:rgba(255,90,31,.06);
  --accent-border:rgba(255,90,31,.28);
}

/* ================================================================
   以下样式全部通过变量换肤，不再写死颜色
   ================================================================ */

body{background:var(--bg);color:var(--text);font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.5}
.container{width:min(1200px,92%);margin:0 auto}

/* ===== 头部 ===== */
.site-header{padding:14px 0;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;background:var(--header-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font-size:20px;font-weight:700;text-decoration:none;background:linear-gradient(90deg,var(--cyan),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

.btn-app{display:inline-block;padding:8px 16px;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff;text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap;transition:filter .2s,transform .15s}
.btn-app:hover{filter:brightness(1.08);transform:translateY(-1px)}

.cat-nav{position:relative}
.btn-cat{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:999px;background:var(--card);color:var(--text);border:1px solid var(--border-strong);font-size:14px;cursor:pointer;white-space:nowrap;transition:.2s}
.btn-cat:hover{border-color:var(--accent);color:var(--accent)}
.btn-cat.active{border-color:var(--accent);color:var(--accent);background:var(--accent-hover)}
.btn-cat .arrow{display:inline-block;font-size:11px;transition:transform .2s;line-height:1}
.btn-cat.active .arrow{transform:rotate(180deg)}

.cat-dropdown{position:absolute;top:calc(100% + 10px);right:0;min-width:180px;max-height:70vh;overflow-y:auto;background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:8px;display:none;z-index:30;box-shadow:var(--shadow-card)}
.cat-dropdown.open{display:block}
.cat-dropdown a{display:block;padding:9px 14px;border-radius:8px;color:var(--muted);text-decoration:none;font-size:14px;white-space:nowrap}
.cat-dropdown a:hover,.cat-dropdown a.active{background:var(--accent-soft);color:var(--accent)}

/* ===== 首屏 ===== */
.hero{padding:10px 0 10px;text-align:center}
.hero-badge{display:inline-block;padding:6px 14px;border-radius:999px;font-size:13px;background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent-border);margin-bottom:5px}
.hero h1{font-size:clamp(26px,4vw,42px);margin-bottom:10px}
.hero p{color:var(--muted);font-size:15px}

/* ===== 中间筛选 ===== */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin:14px auto}
.filter{padding:8px 18px;border-radius:999px;background:var(--card);color:var(--muted);text-decoration:none;font-size:14px;transition:.2s}
.filter:hover{color:var(--hover-text)}
.filter.active{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff}

/* ===== 游戏卡片 ===== */
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:32px}
.game-card{display:block;background:var(--card);border-radius:14px;overflow:hidden;text-decoration:none;color:inherit;border:1px solid var(--border-soft);transition:transform .2s,box-shadow .2s}
.game-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card)}
.game-thumb{position:relative;aspect-ratio:16/10;background:var(--thumb-bg);display:flex;align-items:center;justify-content:center;overflow:hidden}
.game-thumb img{width:100%;height:100%;object-fit:cover}
.thumb-placeholder{font-size:34px;color:var(--cyan);opacity:.7}
.game-badge{position:absolute;top:8px;right:8px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff;font-size:12px;padding:2px 8px;border-radius:6px}
.game-body{padding:12px 14px 16px}
.game-head{display:flex;align-items:baseline;gap:8px;margin-bottom:6px;min-width:0}
.game-title{font-size:15px;margin:0;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.game-sub{font-size:12px;color:var(--accent);margin:0;flex-shrink:0;max-width:55%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.game-desc{font-size:12px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== 加载更多 ===== */
.load-more-wrap{text-align:center;margin-bottom:40px}
#loadMore{padding:11px 40px;border-radius:999px;border:1px solid var(--border-strong);background:var(--card2);color:var(--text);cursor:pointer;font-size:14px}
#loadMore:hover{border-color:var(--accent);color:var(--accent)}
#loadMore:disabled{opacity:.6;cursor:default}

/* ===== 友情链接 ===== */
.links{margin-bottom:40px}
.links h2{font-size:15px;color:var(--muted);margin-bottom:12px}
.links-list{display:flex;flex-wrap:wrap;gap:8px 16px}
.links-list a{color:var(--muted);font-size:13px;text-decoration:none}
.links-list a:hover{color:var(--accent)}

/* ===== 页脚 ===== */
.site-footer{border-top:1px solid var(--border);padding:24px 0;text-align:center;color:var(--muted);font-size:13px}

/* ===== 返回顶部 ===== */
.back-to-top{position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:20px;line-height:1;cursor:pointer;z-index:50;box-shadow:var(--shadow-top);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s,transform .25s,visibility .25s,filter .2s}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{filter:brightness(1.1)}

/* ===== 移动端 ===== */
@media (max-width:640px){
  .site-header{padding:10px 0}
  .logo{font-size:16px;max-width:40%}
  .btn-app,.btn-cat{padding:7px 12px;font-size:13px}
  .header-actions{gap:8px}
  .cat-dropdown{min-width:160px}
  .back-to-top{right:14px;bottom:16px;width:42px;height:42px;font-size:18px}
}