/* roulang page: index */
:root{
--ink0:#0c0e12;
--ink1:#141821;
--ink2:#1c2130;
--line:#252b39;
--sand:#f0b23c;
--sandl:#ffdda0;
--fog:#eef1f7;
--mist:#98a1b2;
--rad:14px;
--elev:0 18px 42px rgba(0,0,0,.38);
--pad:clamp(52px,6.4vw,88px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink0);color:var(--fog);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol,dl,dd{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
.iua-wrap{width:min(1180px,92vw);margin-inline:auto}

/* 顶栏 */
.iua-head{position:sticky;top:0;z-index:50;background:rgba(12,14,18,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.iua-headin{display:flex;align-items:center;gap:26px;height:68px}
.iua-brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.iua-logo{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:700;font-size:17px;color:#1a1206;background:linear-gradient(140deg,var(--sandl),var(--sand))}
.iua-bname{font-size:17px;font-weight:600;letter-spacing:.06em}
.iua-nav{display:flex;align-items:center;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.iua-nav::-webkit-scrollbar{display:none}
.iua-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;color:var(--mist);font-size:14.5px;white-space:nowrap;transition:color .22s,background .22s}
.iua-nav a:hover{color:var(--fog);background:var(--ink1)}

/* 首屏 */
.iua-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--ink0)}
.iua-heroimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3;filter:saturate(.85)}
.iua-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,14,18,.5),rgba(12,14,18,.95) 82%)}
.iua-heroin{position:relative;z-index:2;padding:clamp(44px,6vw,78px) 0 clamp(34px,4.5vw,52px)}
.iua-kick{display:inline-block;font-size:12.5px;letter-spacing:.18em;color:var(--sand);border:1px solid rgba(240,178,60,.32);border-radius:999px;padding:6px 14px;background:rgba(240,178,60,.07)}
.iua-hero h1{font-size:clamp(30px,4.8vw,54px);line-height:1.16;letter-spacing:-.01em;font-weight:700;margin-top:20px;max-width:760px}
.iua-hero h1 em{font-style:normal;color:var(--sand);border-bottom:4px solid rgba(240,178,60,.3);padding-bottom:2px}
.iua-lead{max-width:720px;margin-top:18px;color:#c3cbd9;font-size:16px;line-height:1.9}
.iua-search{display:flex;gap:10px;margin-top:26px;max-width:520px}
.iua-search input{flex:1 1 auto;min-width:0;min-height:48px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:rgba(20,24,33,.92);transition:border-color .22s,box-shadow .22s}
.iua-search input::placeholder{color:#6f7a8c}
.iua-search input:focus{border-color:var(--sand);box-shadow:0 0 0 3px rgba(240,178,60,.16);outline:none}
.iua-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:0;border-radius:12px;background:var(--sand);color:#1a1206;font-weight:600;font-size:15px;cursor:pointer;transition:background .22s,transform .22s}
.iua-btn:hover{background:var(--sandl);transform:translateY(-1px)}
.iua-nodes{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:22px;border-top:1px solid rgba(255,255,255,.07)}
.iua-node{font-size:13.5px;color:var(--mist);padding:8px 15px;border:1px solid var(--line);border-radius:999px;background:rgba(20,24,33,.62)}
.iua-node b{color:var(--sandl);font-weight:600;margin-right:7px}

/* 板块通用 */
.iua-sec{padding:var(--pad) 0;border-bottom:1px solid var(--line)}
.iua-alt{background:#10141b}
.iua-shead{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:32px;flex-wrap:wrap}
.iua-stitle{font-size:clamp(21px,2.6vw,29px);font-weight:650;letter-spacing:.01em;line-height:1.35}
.iua-ssub{max-width:660px;margin-top:12px;color:var(--mist);font-size:14.5px;line-height:1.9}
.iua-chip{font-size:12.5px;color:var(--sandl);border:1px solid rgba(240,178,60,.28);border-radius:999px;padding:5px 13px;white-space:nowrap}

/* 分类目录 */
.iua-cats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.iua-cat{border:1px solid var(--line);border-radius:var(--rad);background:var(--ink1);padding:20px 22px;transition:border-color .25s,transform .25s}
.iua-cat:hover{border-color:rgba(240,178,60,.42);transform:translateY(-2px)}
.iua-cname{display:block;font-size:16.5px;font-weight:600;color:var(--sandl)}
.iua-cdesc{display:block;margin-top:8px;font-size:14px;color:var(--mist);line-height:1.8}

/* 卖点三连 */
.iua-three{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.iua-point{border:1px solid var(--line);border-left:2px solid var(--sand);border-radius:var(--rad);background:var(--ink1);padding:24px}
.iua-pt{font-size:16.5px;font-weight:600;margin-bottom:10px}
.iua-pd{font-size:14px;color:var(--mist);line-height:1.85}

/* 更新节奏 */
.iua-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:34px}
.iua-stat{border:1px solid var(--line);border-radius:var(--rad);background:var(--ink1);padding:20px}
.iua-sv{font-size:19px;font-weight:700;color:var(--sandl);letter-spacing:.02em}
.iua-sl{font-size:13.5px;color:var(--mist);margin-top:6px}
.iua-bars{display:grid;gap:15px;max-width:780px}
.iua-bar{display:grid;grid-template-columns:118px 1fr;gap:16px;align-items:center}
.iua-barlab{font-size:14px;color:var(--mist)}
.iua-btrack{height:10px;border-radius:999px;background:var(--ink2);overflow:hidden}
.iua-bfill{height:100%;border-radius:999px;background:linear-gradient(90deg,rgba(240,178,60,.55),var(--sand))}

/* 卡片墙 */
.iua-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.iua-card{background:var(--ink1);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;transition:transform .28s,border-color .28s,box-shadow .28s}
.iua-card:hover{transform:translateY(-3px);border-color:rgba(240,178,60,.4);box-shadow:var(--elev)}
.iua-thumb{position:relative;width:100%;aspect-ratio:3/4;background:var(--ink2);overflow:hidden}
.iua-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .55s}
.iua-card:hover .iua-thumb img{transform:scale(1.05)}
.iua-tag{position:absolute;left:10px;top:10px;font-size:12px;line-height:1.6;padding:2px 9px;border-radius:6px;color:var(--sandl);background:rgba(12,14,18,.8);border:1px solid rgba(240,178,60,.34)}
.iua-score{position:absolute;right:10px;bottom:10px;font-size:13px;font-weight:700;color:var(--sand);background:rgba(12,14,18,.82);padding:2px 8px;border-radius:6px;font-variant-numeric:tabular-nums}
.iua-ct{padding:14px 15px 3px;font-size:15.5px;font-weight:600}
.iua-cd{padding:0 15px 16px;font-size:14px;color:var(--mist)}

/* 排行 */
.iua-rank{display:grid;grid-template-columns:1fr 1fr;grid-auto-flow:column;grid-template-rows:repeat(5,auto);gap:0 38px}
.iua-rank li{display:flex;align-items:center;gap:14px;min-height:52px;padding:10px 0;border-bottom:1px solid var(--line)}
.iua-num{width:26px;flex:0 0 auto;font-size:15px;font-weight:700;color:#5d6879;font-variant-numeric:tabular-nums}
.iua-rank li:nth-child(-n+3) .iua-num{color:var(--sand)}
.iua-rt{font-size:15.5px;font-weight:600}
.iua-note{font-size:13px;color:var(--mist)}
.iua-rm{margin-left:auto;font-size:12.5px;color:var(--mist);padding:3px 10px;border:1px solid var(--line);border-radius:999px;white-space:nowrap;flex:0 0 auto}

/* 专题 */
.iua-topics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.iua-topic{background:var(--ink1);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;transition:border-color .28s,transform .28s}
.iua-topic:hover{border-color:rgba(240,178,60,.4);transform:translateY(-2px)}
.iua-topic .iua-thumb{aspect-ratio:16/9}
.iua-tbody{padding:18px}
.iua-tt{font-size:16.5px;font-weight:600}
.iua-tx{margin-top:8px;font-size:14px;color:var(--mist);line-height:1.8}
.iua-tmeta{margin-top:14px;font-size:12.5px;color:var(--sandl);letter-spacing:.04em}

/* 推荐清单 */
.iua-picks{display:grid;gap:14px;max-width:900px}
.iua-pick{display:grid;grid-template-columns:88px 1fr;gap:18px;align-items:center;background:var(--ink1);border:1px solid var(--line);border-radius:var(--rad);padding:12px;transition:border-color .25s,background .25s}
.iua-pick:hover{border-color:rgba(240,178,60,.38);background:#171c26}
.iua-pickimg{width:88px;height:88px;border-radius:10px;overflow:hidden;background:var(--ink2)}
.iua-pickimg img{width:100%;height:100%;object-fit:cover}
.iua-pn{font-size:16px;font-weight:600}
.iua-px{margin-top:6px;font-size:14px;color:var(--mist);line-height:1.75}

/* 资讯 */
.iua-news{border-top:1px solid var(--line)}
.iua-news li{display:flex;align-items:baseline;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.iua-ntag{flex:0 0 auto;font-size:12px;color:var(--sand);border:1px solid rgba(240,178,60,.3);border-radius:6px;padding:2px 8px}
.iua-nt{font-size:15.5px;line-height:1.7}
.iua-ntime{margin-left:auto;flex:0 0 auto;font-size:13px;color:var(--mist)}

/* 保障 */
.iua-safe{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.iua-sbox{border:1px solid var(--line);border-radius:var(--rad);background:var(--ink1);padding:22px 20px}
.iua-sbox svg{width:22px;height:22px;stroke:var(--sand);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.iua-sbt{font-size:15.5px;font-weight:600;margin-top:14px}
.iua-sbd{font-size:14px;color:var(--mist);line-height:1.8;margin-top:6px}

/* 问答 */
.iua-faq{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.iua-q{border:1px solid var(--line);border-radius:var(--rad);background:var(--ink1);padding:22px}
.iua-q dt{font-size:15.5px;font-weight:600;margin-bottom:9px}
.iua-q dd{font-size:14px;color:var(--mist);line-height:1.85}

/* 订阅 */
.iua-subbox{max-width:760px}
.iua-sub{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.iua-sub input{flex:1 1 260px;min-width:0;min-height:48px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:var(--ink1);transition:border-color .22s,box-shadow .22s}
.iua-sub input::placeholder{color:#6f7a8c}
.iua-sub input:focus{border-color:var(--sand);box-shadow:0 0 0 3px rgba(240,178,60,.16);outline:none}

/* 页脚 */
.iua-foot{background:#0a0c10;border-top:1px solid var(--line);padding:56px 0 26px}
.iua-fgrid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px}
.iua-fbrand{display:inline-flex;align-items:center;gap:10px;font-size:16.5px;font-weight:600}
.iua-fdesc{margin-top:14px;font-size:14px;color:var(--mist);line-height:1.85;max-width:320px}
.iua-fh{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--fog)}
.iua-fl{display:grid;gap:10px}
.iua-fl a,.iua-fl span{font-size:14px;color:var(--mist);transition:color .22s}
.iua-fl a{display:inline-flex;align-items:center;min-height:26px}
.iua-fl a:hover{color:var(--sand)}
.iua-copy{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#76808f}

@media (max-width:1024px){
.iua-stats{grid-template-columns:repeat(2,1fr)}
.iua-safe{grid-template-columns:repeat(2,1fr)}
.iua-faq{grid-template-columns:1fr}
.iua-fgrid{grid-template-columns:1fr 1fr;gap:28px}
.iua-cats{grid-template-columns:repeat(2,1fr)}
.iua-three{grid-template-columns:1fr}
}
@media (max-width:768px){
.iua-headin{flex-wrap:wrap;height:auto;padding:10px 0;gap:8px 16px}
.iua-nav{width:100%;margin-left:0;order:3}
.iua-nav a{padding:0 12px;font-size:14px}
.iua-heroin{padding-top:38px}
.iua-sec{padding:46px 0}
.iua-shead{margin-bottom:24px}
.iua-cards{grid-template-columns:repeat(2,1fr);gap:14px}
.iua-topics{grid-template-columns:1fr}
.iua-rank{grid-auto-flow:row;grid-template-columns:1fr;grid-template-rows:none;gap:0}
.iua-bar{grid-template-columns:96px 1fr}
.iua-news li{flex-wrap:wrap;gap:6px 12px}
.iua-ntime{margin-left:0}
}
@media (max-width:520px){
.iua-cats{grid-template-columns:1fr}
.iua-safe{grid-template-columns:1fr}
.iua-fgrid{grid-template-columns:1fr}
.iua-search{flex-direction:column}
.iua-search .iua-btn{width:100%}
.iua-pick{grid-template-columns:72px 1fr;gap:14px}
.iua-pickimg{width:72px;height:72px}
.iua-ct{font-size:15px}
.iua-cd{font-size:14px}
}