:root{
  --primary:#ff7a2f; --primary-dark:#e8621a; --primary-2:#ffb020;
  --brand:linear-gradient(135deg,#ff7a2f 0%,#ffb020 100%);
  --ink:#0f1626; --ink-2:#16203a;
  --bg:#f6f7f9; --card:#fff;
  --text:#1f2328; --muted:#6b7280; --border:#ebedf0; --radius:16px;
  --bg2:#eef0f4;
  /* 导航栏（日间：暖调奶油白，非纯白） */
  --nav-bg:#faf8f3; --nav-strong:#23272e; --nav-link:#5a6274;
  --nav-hover-bg:#f1ecdf; --nav-pop:#fffdf8; --nav-pop-link:#5a6274;
  --nav-pop-hover:#f4efe3; --nav-border:rgba(16,24,40,.08);
  --nav-shadow:0 1px 0 var(--nav-border),0 2px 14px rgba(16,24,40,.06);
  --shadow-sm:0 1px 3px rgba(16,24,40,.05);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 16px 38px rgba(16,24,40,.12);
}
/* ---------- 夜间模式 ---------- */
html.dark{
  --bg:#0e1320; --card:#161e2e; --text:#e7ecf4; --muted:#94a1b6;
  --border:#28324a; --bg2:#121a2b; --ink:#0b101c;
  /* 导航栏（夜间：保持深空色） */
  --nav-bg:var(--ink); --nav-strong:#fff; --nav-link:#c6cede;
  --nav-hover-bg:#1c2740; --nav-pop:var(--ink-2); --nav-pop-link:#c3cbdb;
  --nav-pop-hover:#243150; --nav-border:rgba(255,255,255,.05);
  --nav-shadow:0 2px 16px rgba(255,122,47,.10),0 1px 0 rgba(255,255,255,.03) inset;
  --shadow-sm:0 1px 3px rgba(0,0,0,.3);
  --shadow-md:0 10px 26px rgba(0,0,0,.4);
  --shadow-lg:0 18px 40px rgba(0,0,0,.5);
}
html.dark body{background:var(--bg)}
html.dark .tag{background:#3a2a1a;color:#ffb27a}
html.dark .chip:hover{background:#3a2a1a;color:#ffb27a}
html.dark .sbar input,html.dark .hero-form input{background:#10182a;color:var(--text);border-color:var(--border)}
html.dark .sbar input{border:1.5px solid var(--border)}
html.dark .mountains polygon:nth-child(1){fill:#0a0f1c}
html.dark .mountains polygon:nth-child(2){fill:#101a2e}
html.dark .mountains polygon:nth-child(3){fill:#0e1320}
html.dark .promo:hover{box-shadow:0 10px 26px rgba(0,0,0,.45);border-color:rgba(255,122,47,.4)}
html.dark .card:hover{box-shadow:var(--shadow-lg)}
html.dark .qr-card{box-shadow:0 6px 18px rgba(0,0,0,.4)}
html.dark .qr-card img{background:#fff}
html.dark .lp-item{background:transparent;border-color:#3a4152}
html.dark .qr-row{background:#151b28;border-color:#2a3242}
html.dark .qr-prev{border-color:#3a4152;background:#0f1523}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;background:var(--bg2)}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

/* ---------- topnav (跟随日夜模式的导航) ---------- */
.topnav{background:var(--nav-bg);position:sticky;top:0;z-index:80;
  box-shadow:var(--nav-shadow);transition:transform .28s ease}
.topnav.hide{transform:translateY(-100%)}
.topnav-in{display:flex;align-items:stretch;height:64px;gap:4px}
.tn-logo{display:flex;align-items:center;gap:11px;margin-right:22px;flex-shrink:0}
.tn-logo .mark{width:38px;height:38px;border-radius:11px;background:transparent;
  color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;
  box-shadow:none;overflow:visible}
.tn-logo .mark svg{display:block}
.tn-logo .mark img{width:38px;height:38px;object-fit:contain}
.tn-logo b{color:var(--nav-strong);font-size:18px;letter-spacing:.5px}
.tn-menu{list-style:none;display:flex;align-items:stretch;margin:0;padding:0;min-width:0}
.tn-menu>li{position:relative;display:flex}
.tn-menu>li>a{display:flex;align-items:center;padding:0 14px;color:var(--nav-link);font-size:15px;
  font-weight:500;position:relative;transition:.15s;border-radius:0;white-space:nowrap}
.tn-menu>li>a:hover{color:var(--nav-strong);background:var(--nav-hover-bg)}
.tn-menu>li.on>a{color:var(--nav-strong)}
.tn-menu>li.on>a::after{content:"";position:absolute;left:15px;right:15px;bottom:12px;height:3px;
  background:var(--brand);border-radius:2px}
.tn-menu .sub{display:none;position:absolute;top:100%;left:0;background:var(--nav-pop);min-width:152px;
  border-radius:0 0 12px 12px;padding:6px 0;box-shadow:var(--shadow-lg);z-index:90;
  border:1px solid var(--nav-border);border-top:0}
.tn-menu>li:hover .sub{display:block}
.tn-menu .sub a{display:block;padding:8px 16px;color:var(--nav-pop-link);font-size:13.5px;transition:.12s}
.tn-menu .sub a:hover{background:var(--nav-pop-hover);color:var(--nav-strong)}
.tn-right{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0}
.tn-search{display:flex;align-items:center;gap:7px;background:var(--card);border:1px solid var(--nav-border);
  border-radius:20px;padding:0 14px;height:36px;width:168px;transition:.2s;flex-shrink:0}
.tn-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,122,47,.14);width:210px}
.tn-search .tn-si{font-size:13px;opacity:.55}
.tn-search input{border:0;background:transparent;outline:0;font-size:13.5px;width:100%;color:var(--text)}
.tn-search input::placeholder{color:var(--muted)}
.tn-search-ico{background:none;border:0;color:var(--nav-link);font-size:16px;cursor:pointer;padding:6px;transition:.15s}
.tn-search-ico:hover{color:var(--nav-strong);transform:scale(1.1)}
.tn-mode{background:none;border:0;color:var(--nav-link);font-size:17px;cursor:pointer;padding:6px;line-height:1;transition:.15s}
.tn-mode:hover{color:var(--nav-strong);transform:scale(1.12)}
.tn-cta{background:var(--brand);color:#fff;padding:9px 18px;border-radius:9px;
  font-size:14px;font-weight:600;transition:.15s;box-shadow:0 4px 12px rgba(255,122,47,.3)}
.tn-cta:hover{filter:brightness(1.06);color:#fff;transform:translateY(-1px)}

/* ---------- hero 横幅：白天=晨光晴空 / 夜间=深空星野 ---------- */
.hero{position:relative;overflow:hidden;text-align:center;
  background:linear-gradient(180deg,#dceeff 0%,#edf3f7 52%,#faf8f3 100%);
  padding:70px 16px 78px}
/* 星星：白天隐藏，夜里亮起 */
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .5s;
  background-image:
    radial-gradient(1.6px 1.6px at 8% 22%,#ffffffd9 50%,transparent 52%),
    radial-gradient(1.2px 1.2px at 15% 55%,#ffffffb3 50%,transparent 52%),
    radial-gradient(2px 2px at 23% 28%,#ffffffcc 50%,transparent 52%),
    radial-gradient(1.4px 1.4px at 31% 62%,#ffffffa6 50%,transparent 52%),
    radial-gradient(1.8px 1.8px at 39% 18%,#ffffffd9 50%,transparent 52%),
    radial-gradient(1.2px 1.2px at 47% 45%,#ffffffb3 50%,transparent 52%),
    radial-gradient(2.1px 2.1px at 55% 24%,#ffffffcc 50%,transparent 52%),
    radial-gradient(1.4px 1.4px at 62% 58%,#ffffffa6 50%,transparent 52%),
    radial-gradient(1.7px 1.7px at 70% 15%,#ffffffd9 50%,transparent 52%),
    radial-gradient(1.2px 1.2px at 78% 42%,#ffffffb3 50%,transparent 52%),
    radial-gradient(2px 2px at 86% 30%,#ffffffcc 50%,transparent 52%),
    radial-gradient(1.5px 1.5px at 93% 60%,#ffffffa6 50%,transparent 52%)}
/* 白天：太阳光晕 */
.hero::after{content:"";position:absolute;top:-160px;left:50%;width:620px;height:320px;transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(255,199,90,.5),transparent 70%);pointer-events:none;z-index:1}
.hero h1{color:#fff;font-size:34px;letter-spacing:1px;font-weight:800;position:relative;z-index:2;
  margin-bottom:12px;
  background:linear-gradient(120deg,#ffb84d 0%,#ff8c1f 55%,#f56a00 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{color:#7d8698;font-size:15px;position:relative;z-index:2;margin-bottom:28px;opacity:.92}
.hero-tabs{display:flex;justify-content:center;gap:2px;position:relative;z-index:2;margin-bottom:0}
.hero-tabs button{background:transparent;border:0;color:#8b93a5;padding:7px 15px;font-size:13.5px;
  cursor:pointer;font-family:inherit;border-radius:9px 9px 0 0;transition:.15s}
.hero-tabs button:hover{color:#4c5566}
.hero-tabs button.on{background:rgba(255,255,255,.85);color:#1f2328;font-weight:600;
  box-shadow:0 2px 10px rgba(60,90,140,.12)}
.hero-form{max-width:680px;margin:0 auto;display:flex;position:relative;z-index:2;
  background:rgba(255,255,255,.6);padding:6px;border-radius:14px;backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.85);box-shadow:0 12px 32px rgba(60,90,140,.16)}
.hero-form input{flex:1;height:50px;border:0;border-radius:9px 0 0 9px;padding:0 18px;
  font-size:15px;outline:0;font-family:inherit;background:rgba(255,255,255,.96);color:#1f2328;box-shadow:none}
.hero-form button{width:130px;height:50px;border:0;border-radius:0 9px 9px 0;background:var(--brand);
  color:#fff;font-size:15.5px;font-weight:700;cursor:pointer;font-family:inherit;transition:.15s}
.hero-form button:hover{filter:brightness(1.06)}
.mountains{position:absolute;left:0;right:0;bottom:-1px;width:100%;height:130px;pointer-events:none;z-index:1}
/* 白天远山：雾蓝远岭 + 暖沙中层 + 奶油底融入页面 */
.mountains polygon:nth-child(1){fill:#c7d6ea}
.mountains polygon:nth-child(2){fill:#e9e1d0}
.mountains polygon:nth-child(3){fill:#faf8f3}
/* 夜间：换回深空星野 */
html.dark .hero{background:radial-gradient(120% 90% at 50% -10%,#27345a 0%,#16203a 45%,#0f1626 100%)}
html.dark .hero::before{opacity:1}
html.dark .hero::after{background:radial-gradient(closest-side,rgba(255,122,47,.28),transparent 70%)}
html.dark .hero h1{background:linear-gradient(120deg,#ffd089 0%,#ff9a3d 55%,#ff7a2f 100%);
  -webkit-background-clip:text;background-clip:text}
html.dark .hero-sub{color:#c5d0e6}
html.dark .hero-tabs button{color:#8fa0c0}
html.dark .hero-tabs button:hover{color:#dfe7f5}
html.dark .hero-tabs button.on{background:rgba(255,255,255,.14);color:#fff;box-shadow:none}
html.dark .hero-form{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.14);
  box-shadow:0 14px 40px rgba(0,0,0,.35)}

/* ---------- promos (首页快捷卡片) ---------- */
.promos{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0 4px}
.promo{background:var(--card);border-radius:14px;padding:16px;display:flex;align-items:center;gap:13px;
  border:1px solid var(--border);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;box-shadow:var(--shadow-sm)}
.promo:hover{transform:translateY(-4px);box-shadow:0 10px 26px rgba(255,122,47,.16),0 2px 6px rgba(255,122,47,.08);
  border-color:rgba(255,122,47,.35)}
.promo:hover .pi{transform:scale(1.08) rotate(-3deg)}
.promo .pi{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;
  justify-content:center;font-size:23px;flex-shrink:0;box-shadow:var(--shadow-sm);transition:transform .2s ease}
.promo b{display:block;font-size:14.5px;line-height:1.4}
.promo span{font-size:12px;color:var(--muted)}

/* ---------- 回到顶部 ---------- */
.totop{position:fixed;right:22px;bottom:76px;width:42px;height:42px;border:1px solid var(--border);
  border-radius:50%;background:var(--card);color:var(--primary);cursor:pointer;z-index:95;
  box-shadow:0 2px 8px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.08);
  opacity:0;visibility:hidden;transform:translateY(10px) scale(.92);
  transition:opacity .25s,transform .25s,box-shadow .25s,background .25s,color .25s,border-color .25s;
  display:flex;align-items:center;justify-content:center}
.totop::before{content:"";position:absolute;left:50%;top:50%;width:9px;height:9px;
  border-left:1.8px solid currentColor;border-top:1.8px solid currentColor;
  transform:translate(-50%,-32%) rotate(45deg);border-radius:2px}
.totop.show{opacity:1;visibility:visible;transform:none}
.totop:hover{background:var(--primary);border-color:var(--primary);color:#fff;
  box-shadow:0 6px 18px rgba(255,122,47,.32);transform:translateY(-2px)}
.totop:active{transform:translateY(0)}
html.dark .totop{box-shadow:0 2px 8px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35)}
@media (max-width:760px){
  .totop{right:14px;bottom:56px;width:38px;height:38px}
}

/* ---------- 首页轮播banner + 热榜（双栏） ---------- */
.bn-sec{margin-top:22px}
.bn-wrap{display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:26px;align-items:stretch;
  max-width:1150px;margin:0 auto}
.banner{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:16/9;
  background:#0f1626;box-shadow:0 12px 32px rgba(15,22,38,.16);border:1px solid var(--border)}
/* ---- 热榜（抖音榜样式） ---- */
.hotrank{border-radius:16px;background:var(--card);border:1px solid var(--border);
  box-shadow:var(--shadow-sm);padding:18px 20px 14px;display:flex;flex-direction:column;min-width:0}
.hr-hd{display:flex;align-items:center;gap:10px;padding-bottom:6px}
.hr-ic{font-size:20px;line-height:1}
.hr-hd b{font-size:19px;font-weight:800;color:var(--text);letter-spacing:1px}
.hr-sub{margin-left:auto;font-size:12px;color:var(--muted)}
.hr-list{display:flex;flex-direction:column;justify-content:space-around;flex:1;padding-top:2px}
.hr-item{display:flex;align-items:center;gap:16px;padding:7px 10px;margin:0 -10px;border-radius:10px;
  transition:background .15s}
.hr-item:hover{background:var(--bg2)}
.hr-no{width:28px;height:28px;border-radius:9px;background:var(--bg2);color:var(--muted);
  font-size:14px;font-weight:700;font-style:normal;display:flex;align-items:center;
  justify-content:center;flex-shrink:0}
.hr-no.n1{background:linear-gradient(135deg,#fe2c55,#ff4d6a);color:#fff}
.hr-no.n2{background:linear-gradient(135deg,#ff6a3d,#ff8a3d);color:#fff}
.hr-no.n3{background:linear-gradient(135deg,#ffb020,#ffc94d);color:#fff}
html.dark .hr-no{background:#232c42;color:#94a1b6}
.hr-t{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  font-size:15px;font-weight:500;color:var(--text)}
.hr-item:hover .hr-t{color:var(--primary)}
.hr-ft{display:flex;align-items:center;justify-content:space-between;padding-top:10px;
  border-top:1px dashed var(--border);font-size:12px;color:var(--muted)}
.bn-slide{position:absolute;inset:0;opacity:0;transition:opacity .55s ease;pointer-events:none;display:block}
.bn-slide.on{opacity:1;pointer-events:auto}
.bn-slide img{width:100%;height:100%;object-fit:cover;display:block}
.bn-cap{position:absolute;left:0;right:0;bottom:0;padding:44px 22px 20px;color:#fff;
  background:linear-gradient(transparent,rgba(8,12,22,.86))}
.bn-cap b{font-size:19px;font-weight:700;text-shadow:0 1px 6px rgba(0,0,0,.4)}
.bn-cap span{display:block;font-size:13px;opacity:.88;margin-top:5px}
.bn-ar{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border:0;
  border-radius:50%;background:rgba(8,12,22,.42);color:#fff;font-size:24px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .2s;z-index:3}
.bn-ar:hover{background:rgba(8,12,22,.72)}
.bn-prev{left:12px}.bn-next{right:12px}
.bn-dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:7px;z-index:3}
.bn-dots i{width:8px;height:8px;border-radius:9px;background:rgba(255,255,255,.45);cursor:pointer;transition:.3s}
.bn-dots i.on{background:#fff;width:22px}
@media (max-width:960px){
  .bn-wrap{grid-template-columns:1fr}
  .hr-list{justify-content:flex-start}
  .hr-item{padding:7px 6px}
}
@media (max-width:720px){
  .banner{border-radius:12px}
  .bn-cap{padding:32px 15px 16px}
  .bn-cap b{font-size:16px}
  .bn-cap span{font-size:12px}
  .bn-ar{width:32px;height:32px;font-size:20px}
  .bn-prev{left:8px}.bn-next{right:8px}
}

/* ---------- section ---------- */
.sec{margin-top:28px}
.sec-hd{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.sec-hd h2{font-size:19px;position:relative;padding-left:13px;font-weight:700}
.sec-hd h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:3px;background:var(--brand)}
.sec-hd .more{margin-left:auto;font-size:13px;color:var(--muted);transition:.15s}
.sec-hd .more:hover{color:var(--primary)}
.sec-hd .cnt{font-size:12.5px;color:var(--muted);background:var(--card);border:1px solid var(--border);
  padding:2px 10px;border-radius:20px}

/* ---------- card grid ---------- */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{position:relative;background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
/* 整卡点击跳转：覆盖层铺满卡片，标题链接保持可点 */
.card .stretch{position:absolute;inset:0;z-index:3;border-radius:inherit}
.card h3 a{position:relative;z-index:4}
.card .thumb{position:relative;padding-top:56.25%;background:var(--bg2);overflow:hidden}
.card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .thumb img{transform:scale(1.06)}
.card .badge{position:absolute;top:9px;left:9px;background:var(--brand);color:#fff;
  font-size:11px;padding:3px 9px;border-radius:20px;font-weight:600;z-index:2;box-shadow:var(--shadow-sm)}
.card .body{padding:13px 14px 14px;display:flex;flex-direction:column;flex:1}
.card .cats{display:flex;gap:8px;font-size:11.5px;color:var(--muted);margin-bottom:7px;flex-wrap:wrap}
.card .cats i{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:4px;vertical-align:1px}
.card h3{font-size:14.5px;line-height:1.5;font-weight:600;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover h3{color:var(--primary-dark)}
.card p{font-size:12.5px;color:var(--muted);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{margin-top:auto;padding-top:11px;font-size:11.5px;color:var(--muted);display:flex;gap:12px}

/* ---------- page head ---------- */
.phead{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px 24px;margin-top:22px;box-shadow:var(--shadow-sm)}
.phead h1{font-size:22px;margin-bottom:6px;font-weight:700}
.phead .crumb{font-size:12.5px;color:var(--muted);margin-bottom:8px}
.phead .crumb a:hover{color:var(--primary)}
.phead .desc{font-size:13.5px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{font-size:12.5px;padding:6px 14px;border-radius:20px;background:var(--bg2);color:var(--muted);transition:.15s}
.chip:hover{background:#fff2e8;color:var(--primary-dark)}
.chip.on{background:var(--primary);color:#fff;box-shadow:0 4px 10px rgba(255,122,47,.28)}

/* ---------- detail ---------- */
.dt{display:grid;grid-template-columns:1fr 300px;gap:20px;margin-top:22px;align-items:start}
.dt-main{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.dt-main h1{font-size:24px;line-height:1.45;margin-bottom:12px;font-weight:700}
.dt-meta{font-size:12.5px;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap;
  padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:18px}
.dt-cover{border-radius:12px;overflow:hidden;margin-bottom:18px;background:var(--bg2)}
.dt-cover img{width:100%}
.dt-body p{font-size:14.5px;line-height:1.95;color:var(--text);margin-bottom:14px}
.dt-body h2{font-size:17px;margin:22px 0 10px;padding-left:11px;position:relative;font-weight:700}
.dt-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:3.5px;
  border-radius:3px;background:var(--brand)}
.dt-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--border)}
.tag{font-size:12px;background:#fff2e8;color:var(--primary-dark);padding:4px 11px;border-radius:6px;font-weight:500}

/* ---------- 详情页下载区（正文内联式） ---------- */
.dl-h{font-size:17.5px;margin:24px 0 16px;padding:2px 0 2px 12px;border-left:4px solid var(--primary);line-height:1.4;font-weight:700}
.dl-btn{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;
  padding:12px 28px;border-radius:9px;font-size:14.5px;font-weight:600;transition:.18s;margin-bottom:16px;
  box-shadow:0 6px 16px rgba(255,122,47,.32)}
.dl-btn:hover{filter:brightness(1.05);transform:translateY(-2px);color:#fff}
.dl-code{display:inline-block;margin-left:12px;font-size:13px;color:var(--muted);background:var(--bg2);
  border:1px dashed var(--border);padding:9px 14px;border-radius:8px;vertical-align:middle}
.dl-imp{font-size:13.5px;color:var(--primary-dark);font-weight:600;margin:6px 0;line-height:1.8}
.dl-stm{font-size:13.5px;color:var(--muted);margin:6px 0 20px;line-height:1.8}
.disc{background:var(--bg2);border-radius:10px;padding:16px 20px;font-size:13px;color:var(--muted);
  line-height:1.95;margin-bottom:18px}
.disc .red{color:#e23c3c;font-weight:600}
.dt-kw{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:12px 0 4px;
  font-size:13.5px;color:var(--muted);font-weight:600}
.dt-kw span{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  background:var(--bg2);border:1px solid var(--border);color:var(--primary);font-weight:600;font-size:13px}

.side{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;
  margin-bottom:16px;box-shadow:var(--shadow-sm)}
.side h4{font-size:15px;margin-bottom:12px;padding-left:10px;position:relative;font-weight:700}
.side h4::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:3px;background:var(--brand)}
.side-list a{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid var(--border);font-size:13.5px}
.side-list a:last-child{border:0}
.side-list a:hover{color:var(--primary)}
.side-list .n{width:20px;height:20px;border-radius:5px;background:var(--bg2);color:var(--muted);font-size:11.5px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:3px;font-weight:700}
.side-list .n.hot{background:var(--primary);color:#fff}
.side-list span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}

/* ---------- search ---------- */
.search-page{margin-top:22px}
.sbar{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;gap:10px;box-shadow:var(--shadow-sm)}
.sbar input{flex:1;height:42px;border:1.5px solid var(--border);border-radius:9px;padding:0 14px;
  font-size:14.5px;outline:0;font-family:inherit;transition:.15s}
.sbar input:focus{border-color:var(--primary)}
.sbar button{height:42px;padding:0 26px;border:0;background:var(--primary);color:#fff;border-radius:9px;
  font-size:14.5px;font-weight:600;cursor:pointer;font-family:inherit;transition:.15s}
.sbar button:hover{background:var(--primary-dark)}
.sres{margin-top:14px;font-size:13.5px;color:var(--muted)}
.kwcloud{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px}
.kwcloud-h{font-size:13.5px;color:var(--muted);font-weight:600;margin-right:2px}
.kwchip{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:13px;text-decoration:none;font-weight:500;
  transition:.15s;white-space:nowrap}
.kwchip:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 10px rgba(255,122,47,.28)}
/* 搜索结果里的外链站点卡片 */
.card-ext .ext-thumb{display:flex;align-items:center;justify-content:center;height:100%;
  font-size:46px;background:linear-gradient(135deg,#eef2ff,#fef3f2)}
.card-ext .ext-url{font-size:12px;color:var(--muted);word-break:break-all;margin-top:6px}
.empty{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:60px 20px;text-align:center;color:var(--muted);margin-top:20px}
.empty b{display:block;font-size:16px;color:var(--text);margin-bottom:8px}

/* ---------- pager ---------- */
.pager{display:flex;justify-content:center;gap:8px;margin:28px 0 10px;flex-wrap:wrap}
.pager a,.pager span{min-width:38px;height:38px;padding:0 12px;display:flex;align-items:center;
  justify-content:center;border-radius:9px;background:var(--card);border:1px solid var(--border);
  font-size:14px;color:var(--muted);transition:.15s}
.pager a:hover{border-color:var(--primary);color:var(--primary)}
.pager .cur{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:700;box-shadow:0 4px 10px rgba(255,122,47,.28)}
.pager .pinfo{background:none;border:none;color:var(--muted,#888);font-size:14px;min-width:auto;padding:0 8px}

/* ---------- footer ---------- */
.ft{background:var(--card);border-top:1px solid var(--border);margin-top:44px;padding:34px 0 26px}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr .8fr 1fr;gap:24px}
.ft h5{font-size:14.5px;margin-bottom:12px;font-weight:700}
.ft p,.ft li{font-size:12.8px;color:var(--muted);line-height:1.9}
.ft ul{list-style:none}
.ft a:hover{color:var(--primary)}
.ft .disc{margin-top:22px;padding-top:16px;border-top:1px solid var(--border);
  font-size:12px;color:var(--muted);line-height:1.85}
.ft .copy{text-align:center;font-size:12.3px;color:var(--muted);margin-top:16px}
.ft .copy .icp-link{color:var(--text);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.ft .copy .icp-link:hover{color:var(--primary)}

/* ---------- 联系我们页（三个版本） ---------- */
.contact-body{margin-top:16px}
.contact-body p{font-size:14.5px;line-height:2;color:var(--text);margin-bottom:12px}
.qr-grid{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px}
.qr-card{margin:0;width:170px;background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:16px 12px;text-align:center;box-shadow:var(--shadow-sm);transition:.2s}
.qr-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:transparent}
.qr-card img{width:138px;height:138px;object-fit:contain;background:#fff;border-radius:10px;padding:6px}
.qr-card figcaption{margin-top:11px;font-size:14px;color:var(--text);line-height:1.6}
.qr-card figcaption b{display:block;font-weight:700}
.qr-card figcaption span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px}
.contact-split{display:flex;gap:44px;align-items:flex-start;flex-wrap:wrap;margin-top:16px}
.contact-split .contact-body{flex:1 1 380px;margin-top:0}
.contact-split .contact-qr{flex:0 0 auto;padding-top:10px}
.contact-split .contact-qr .qr-grid{margin-top:0;flex-direction:column}
.ct-v3 .qr-grid{justify-content:center;margin-top:26px}
.ct-v3 .qr-card{width:200px;padding:18px 14px}
.ct-v3 .qr-card img{width:164px;height:164px}
.ct-v3 .ct-lead{max-width:720px}
.ct-v1 .qr-grid{margin-top:20px}
.hint{color:var(--muted);font-size:13.5px}

/* ---------- 滚动入场动效（仅在 JS 开启且非减弱动效时生效） ---------- */
html.js .sec,html.js .phead,html.js .qr-card,html.js .side{
  opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
html.js .sec.in,html.js .phead.in,html.js .qr-card.in,html.js .side.in{
  opacity:1;transform:none}
/* 分类卡只淡入不动 transform，避免覆盖 hover 悬浮 */
html.js .promo{opacity:0;transition:opacity .55s ease}
html.js .promo.in{opacity:1}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .sec,html.js .promo,html.js .phead,html.js .qr-card,html.js .side{opacity:1;transform:none;transition:none}
  .card,.promo,.qr-card,.dl-btn,.tn-cta{transition:none}
}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .promos{grid-template-columns:repeat(3,1fr)}
  .dt{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .topnav-in{flex-wrap:wrap;height:auto;padding:8px 0}
  .tn-logo{margin-right:8px}
  .tn-menu{order:3;flex-basis:100%;overflow-x:auto;height:44px;-webkit-overflow-scrolling:touch;gap:0}
  .tn-menu>li>a{padding:0 13px;font-size:14px;white-space:nowrap}
  .tn-menu>li.on>a::after{bottom:6px}
  .tn-menu .sub{top:44px}
  .tn-cta{display:none}
  .tn-search{width:150px}
  .tn-search:focus-within{width:170px}
  .hero{padding:52px 14px 68px}
  .hero h1{font-size:24px;letter-spacing:.5px}
  .promos{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .wrap{padding:0 13px}
  .grid{grid-template-columns:1fr}
  .hero{padding:42px 14px 62px}
  .hero h1{font-size:21px}
  .tn-search{width:118px}
  .tn-search:focus-within{width:140px}
  .hero-sub{font-size:13.5px;margin-bottom:20px}
  .hero-form{margin:0 4px;padding:5px}
  .hero-form input{height:46px;padding:0 14px;font-size:15px}
  .hero-form button{width:84px;height:46px;font-size:14px}
  .sec{margin-top:22px}
  .sec-hd h2{font-size:17px}
  .phead{padding:18px 16px;margin-top:18px}
  .phead h1{font-size:19px}
  .dt-main{padding:18px}
  .dt-main h1{font-size:20px}
  .dt-body p{font-size:14px}
  .card .body{padding:11px 12px 12px}
  .card h3{font-size:14px}
  .promo{padding:14px;gap:11px}
  .promo .pi{width:42px;height:42px;font-size:21px}
  .ft{padding:28px 0 22px}
  .qr-card{width:150px}
  .qr-card img{width:120px;height:120px}
  .pager a,.pager span{min-width:34px;height:34px;padding:0 9px;font-size:13px}
  .sbar{padding:12px;gap:8px}
  .sbar input{height:40px}
  .sbar button{padding:0 18px;height:40px}
  .empty{padding:44px 16px}
}
@media(max-width:400px){
  .hero h1{font-size:19px}
  .topnav-in{gap:2px}
  .tn-logo b{font-size:16px}
  .tn-logo .mark{width:34px;height:34px;font-size:16px}
  .tn-search{width:104px;padding:0 10px}
  .tn-search:focus-within{width:120px}
}

/* ---------- 网站导航页（site cards） ---------- */
.site-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));gap:12px}
.site-card{display:flex;align-items:center;gap:9px;background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:11px 12px;text-decoration:none;transition:.18s;box-shadow:var(--shadow-sm);min-width:0}
.site-card:hover{transform:translateY(-3px);box-shadow:0 10px 22px rgba(255,122,47,.16);border-color:rgba(255,122,47,.45)}
.site-ico{position:relative;width:30px;height:30px;border-radius:8px;flex-shrink:0;display:flex;align-items:center;justify-content:center;overflow:hidden}
.site-ico b{color:#fff;font-size:14px;font-weight:700}
.site-ico img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#fff;border-radius:8px}
.site-name{font-size:13.5px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.site-arrow{color:#c2c8d2;font-size:16px;flex-shrink:0;transition:.18s}
.site-card:hover .site-arrow{color:var(--primary);transform:translateX(2px)}
html.dark .site-card:hover{box-shadow:0 10px 26px rgba(0,0,0,.45);border-color:rgba(255,122,47,.4)}
html.dark .site-ico img{background:#e8ecf2}
@media(max-width:560px){.site-grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- 网站导航页：左栏 + 内容 左右结构 ---------- */
.sites-wrap{display:grid;grid-template-columns:176px 1fr;gap:26px;align-items:start;margin-top:6px}
.sites-side{position:sticky;top:80px;display:flex;flex-direction:column;gap:3px;
  background:var(--card);border:1px solid var(--border);border-radius:14px;padding:10px}
.ss-item{display:flex;align-items:center;gap:8px;padding:9px 11px;border-radius:9px;
  text-decoration:none;color:var(--muted);font-size:14px;font-weight:500;transition:.15s}
.ss-item span{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ss-item em{font-style:normal;font-size:11.5px;background:var(--bg2);border-radius:10px;padding:1px 7px;color:var(--muted)}
.ss-item:hover{background:var(--bg2);color:var(--text)}
.ss-item.on{background:var(--primary);color:#fff;font-weight:600}
.ss-item.on em{background:rgba(255,255,255,.22);color:#fff}
.site-sec{scroll-margin-top:80px}
.site-txt{display:flex;flex-direction:column;min-width:0;flex:1}
.site-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-desc{font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}
.site-card{align-items:center}
@media(max-width:900px){
  .sites-wrap{grid-template-columns:1fr;gap:14px}
  /* 手机端：分组条贴顶(与顶栏同高，靠 z-index 让位)——顶栏下滑隐藏后自然露出，不再悬空遮卡片 */
  .sites-side{position:sticky;top:0;z-index:70;flex-direction:row;overflow-x:auto;
    -webkit-overflow-scrolling:touch;padding:8px;gap:5px;scrollbar-width:none;
    border-radius:0;border-left:0;border-right:0;border-top:0;
    box-shadow:0 4px 14px rgba(16,24,40,.07)}
  .sites-side::-webkit-scrollbar{display:none}
  .ss-item{flex-shrink:0;padding:8px 12px}
  .ss-item em{display:none}
  .site-sec{scroll-margin-top:126px}
}

/* SEO：仅供搜索引擎识别的页面主标题（视觉隐藏，不破坏现有设计） */
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}