:root{
  --bg:#0a0e14;
  --surface:#111827;
  --card:#0f172a;
  --muted:#94a3b8;
  --text:#e5edf5;
  --brand:#0ea5a8;
  --brand-2:#34d399;
  --ring:rgba(14,165,168,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(1200px 600px at 10% -10%,rgba(14,165,168,.15),transparent 60%), radial-gradient(1000px 500px at 90% -20%,rgba(52,211,153,.12),transparent 60%), var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial}
a{color:inherit;text-decoration:none}
.container{max-width:1280px;margin-inline:auto;padding:0 20px}

.site-header{position:sticky;top:0;z-index:50;background:rgba(10,14,20,.45);backdrop-filter:saturate(140%) blur(14px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;gap:14px;min-height:52px}
.logo{font-weight:800;letter-spacing:.3px;color:#eaffff}
.main-nav{display:flex;gap:10px}
.main-nav a{padding:8px 10px;border-radius:8px;color:#cde3e3}
.main-nav a:hover{background:rgba(255,255,255,.06)}
.search{margin-left:auto}
.search input{width:260px;max-width:38vw;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);color:var(--text);padding:10px 12px;border-radius:10px;outline:0}
.search input:focus{border-color:var(--ring);box-shadow:0 0 0 6px var(--ring)}








.page{display:grid;grid-template-columns:300px 1fr;gap:22px;align-items:start;padding:8px 0}
.sidebar .widget{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:16px;margin-bottom:16px}
.widget h3{margin:0 0 8px}
.tags{display:flex;flex-wrap:wrap;gap:8px;padding:0;list-style:none}
.tags a{display:inline-block;background:rgba(255,255,255,.06);padding:6px 10px;border-radius:999px;color:#d6f4f4;border:1px solid rgba(255,255,255,.08)}
.steps{margin:0 0 0 18px}

.content-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
.muted{color:var(--muted)}

.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media (max-width:1199px){.card-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:899px){.page{grid-template-columns:1fr}.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){
  .card-grid{grid-template-columns:1fr}
  .search input{width:58vw}
  /* 移动端汉堡菜单：头部内下拉，不覆盖内容 */
  .main-nav{
    position:static;
    display:none;gap:12px;flex-wrap:wrap;
    background:rgba(10,14,20,.75);
    padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.06);
  }
  .main-nav.open{display:flex}
  .hamburger{display:inline-grid}
  .nav-mask{display:none}
}

.card{position:relative;background:var(--card);border:1px solid rgba(255,255,255,.06);border-radius:16px;overflow:hidden;min-height:180px;display:flex;flex-direction:column;transition:transform .18s ease, box-shadow .18s ease}
.card-media{position:relative;aspect-ratio:16/10;background:#111;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;display:block}
.card-badge{position:absolute;inset:10px auto auto 10px;background:rgba(0,0,0,.5);color:#eaffff;padding:4px 8px;border-radius:999px;font-size:12px;border:1px solid rgba(255,255,255,.15);backdrop-filter:blur(4px)}
.card-body{padding:10px 12px 12px;display:flex;gap:10px;align-items:flex-start}
.card-body .title{margin:0;font-size:18px;line-height:1.3}
.card-body .desc{color:var(--muted);font-size:14px;margin-top:6px}
.card-footer{display:flex;justify-content:space-between;align-items:center;padding:8px 12px 12px;color:#b6c7cf;border-top:1px solid rgba(255,255,255,.06)}
.card-footer a{color:#bfecec}

/* Unified card footer layout */
.card-footer{display:flex;justify-content:space-between;align-items:center;gap:12px}
.card-footer .meta{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#cfe9e9}
.card-footer .cta{color:#cfe9e9;white-space:nowrap}
.card-footer .cta::after{content:"";display:inline-block;width:8px;height:8px;border-right:2px solid currentColor;border-top:2px solid currentColor;transform:rotate(45deg);margin-left:6px}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(0,0,0,.25)}

.empty-state{padding:24px;text-align:center;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);border-radius:14px}

.friends{padding:36px 0;background:linear-gradient(180deg,transparent,rgba(14,165,168,.15))}
.friend-links{display:flex;gap:14px;flex-wrap:wrap;list-style:none;padding:0;margin:10px 0 0}
.friend-links a{background:rgba(255,255,255,.06);padding:8px 12px;border:1px solid rgba(255,255,255,.08);border-radius:10px}
.friend-links a:hover{border-color:var(--ring)}

.site-footer{padding:18px 0;border-top:1px solid rgba(255,255,255,.06)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.footer-nav{display:flex;gap:12px}
.footer-nav a{color:#cfe9e9}

.visually-hidden{position:absolute !important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* 侧栏广告轮播 */
.ad-slider{position:relative;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);border-radius:14px;overflow:hidden}
.ad-slider-viewport{position:relative;isolation:isolate;aspect-ratio:16/10;overflow:hidden}
.ad-slides{display:flex;transition:transform .4s ease}
.ad-slide{min-width:100%;position:relative}
.ad-slide a{display:block;position:relative}
.ad-slide img{width:100%;height:100%;object-fit:cover;display:block}
.ad-caption{position:absolute;left:10px;bottom:10px;background:rgba(0,0,0,.45);backdrop-filter:blur(4px);color:#eaffff;border:1px solid rgba(255,255,255,.15);padding:6px 10px;border-radius:10px;font-size:13px}
.ad-tag{margin-left:8px;font-size:12px;opacity:.9}
.ad-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:2;border:1px solid rgba(255,255,255,.15);background:rgba(0,0,0,.35);color:#eaffff;border-radius:10px;width:32px;height:32px;display:grid;place-items:center;cursor:pointer}
.ad-nav:hover{background:rgba(0,0,0,.5)}
.ad-nav.prev{left:8px}
.ad-nav.next{right:8px}
.ad-dots{display:flex;gap:6px;justify-content:center;padding:10px}
.ad-dot{width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.25);border:1px solid rgba(255,255,255,.2);cursor:pointer}
.ad-dot[aria-selected="true"]{background:var(--brand);border-color:var(--brand)}
.sidebar .ad-slider{margin-bottom:16px}

/* Desktop fixed ad (ensures follow on scroll) */
@media (min-width:900px){
  .ad-slider{
    position:fixed;
    top:52px;            /* align with header height */
    width:300px;         /* match sidebar column width */
    z-index:30;
  }
  .ad-slider-viewport{width:100%}
}

/* Sticky follow for sidebar ads */

/* 汉堡按钮（默认桌面隐藏，移动端显示时开启） */
.hamburger{
  display:none;place-items:center;gap:4px;border:1px solid rgba(255,255,255,.12);
  background:rgba(0,0,0,.25);color:#eaffff;width:36px;height:36px;border-radius:8px;cursor:pointer;
}
.hamburger span{display:block;width:16px;height:2px;background:#eaffff}

.nav-mask{display:none} /* 桌面默认关闭，移动端在媒体查询中打开 */


@media (max-width:768px){
  /* 强覆盖：移动端隐藏/展开主导航，并固定汉堡按钮位置 */
  .site-header .header-inner{position:relative}
  .hamburger{position:absolute;right:12px;top:8px;display:inline-grid}
  .main-nav{display:none !important}
  .main-nav.open{display:flex !important}
}
 
/* 移动端展开导航统一覆盖（下拉式） */
@media (max-width:768px){
  .main-nav{ z-index:auto !important }
  .main-nav.open{ display:flex !important; flex-direction:column }
  .main-nav a{ display:block; padding:12px 14px; border-radius:8px }
  .nav-mask.show{ display:none }
}
/* 展开时允许页面滚动 */
body.nav-open{ overflow:auto }

/* 回到顶部浮窗 */
.back-top{
  position:fixed;right:22px;bottom:22px;z-index:60;
  width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;
  color:#eaffff;background:rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.15);
  backdrop-filter:blur(6px);
  cursor:pointer;
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .2s ease, transform .2s ease, background .2s ease;
}
.back-top:hover{background:rgba(0,0,0,.6)}
.back-top.show{opacity:1;transform:translateY(0);pointer-events:auto}
@media (max-width:768px){.back-top{right:14px;bottom:14px;width:36px;height:36px}}