/* roulang page: index */
:root{
  --clr-main:#1e5bd6;
  --clr-deep:#0d2350;
  --clr-soft:#eef4ff;
  --clr-bg:#f7f9fd;
  --tx-1:#16233c;
  --tx-2:#5b6a86;
  --line:#dde5f3;
  --rad-l:20px;
  --rad-m:14px;
  --sh-card:0 10px 28px rgba(20,45,95,.08);
  --sh-hover:0 16px 36px rgba(20,45,95,.14);
  --gap:26px;
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;padding-bottom:78px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--clr-bg);color:var(--tx-1);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
input{font:inherit}
button{font:inherit}
.vdmldbac-wrap{width:min(100% - 36px,var(--maxw));margin:0 auto}

/* 顶栏 */
.vdmldbac-head{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.vdmldbac-hin{display:flex;align-items:center;gap:20px;min-height:68px}
.vdmldbac-logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.2px}
.vdmldbac-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,#1e5bd6,#5c94ff);box-shadow:0 6px 14px rgba(30,91,214,.35)}
.vdmldbac-nav{margin-left:auto;display:flex;align-items:center;gap:2px;overflow-x:auto}
.vdmldbac-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;border-radius:10px;font-size:15px;color:var(--tx-2);white-space:nowrap;transition:background .2s,color .2s}
.vdmldbac-nav a:hover,.vdmldbac-nav a:focus-visible{background:var(--clr-soft);color:var(--clr-main)}

/* 首屏 */
.vdmldbac-hero{padding:54px 0 46px;background:linear-gradient(180deg,#eaf1ff 0%,var(--clr-bg) 100%)}
.vdmldbac-hgrid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:46px;align-items:center}
.vdmldbac-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--clr-main);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:18px}
.vdmldbac-h1{font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:-.6px;font-weight:800}
.vdmldbac-sub{margin-top:12px;font-size:clamp(17px,2vw,21px);font-weight:600;color:var(--clr-deep)}
.vdmldbac-sub em{font-style:normal;color:var(--clr-main)}
.vdmldbac-lead{margin-top:18px;font-size:16px;line-height:1.85;color:var(--tx-2)}
.vdmldbac-acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.vdmldbac-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s}
.vdmldbac-btn--main{background:var(--clr-main);color:#fff;box-shadow:0 10px 22px rgba(30,91,214,.28)}
.vdmldbac-btn--main:hover{background:#1a4fbb;transform:translateY(-1px)}
.vdmldbac-btn--ghost{background:#fff;color:var(--clr-main);border-color:#c9d9f7}
.vdmldbac-btn--ghost:hover{background:var(--clr-soft)}
.vdmldbac-btn:focus-visible{outline:2px solid var(--clr-deep);outline-offset:3px}
.vdmldbac-kpis{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.vdmldbac-kpis li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 16px;font-size:14px;color:var(--tx-2);box-shadow:0 4px 12px rgba(20,45,95,.05)}
.vdmldbac-kpis b{color:var(--tx-1);font-weight:700;margin-right:6px}

/* 直播预告卡 */
.vdmldbac-live{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);box-shadow:var(--sh-card);overflow:hidden}
.vdmldbac-live-img{position:relative;aspect-ratio:16/10;overflow:hidden}
.vdmldbac-live-img img{width:100%;height:100%;object-fit:cover}
.vdmldbac-live-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,20,48,0) 38%,rgba(6,20,48,.76));z-index:1}
.vdmldbac-live-tag{position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.94);color:var(--clr-main);font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px}
.vdmldbac-live-cap{position:absolute;left:16px;right:16px;bottom:14px;z-index:2;color:#fff}
.vdmldbac-live-cap b{display:block;font-size:17px}
.vdmldbac-live-cap span{font-size:13px;color:rgba(255,255,255,.84)}
.vdmldbac-live-body{padding:18px 20px 20px}
.vdmldbac-cd{display:flex;gap:10px;margin-bottom:16px}
.vdmldbac-cd i{flex:1;text-align:center;background:var(--clr-soft);border-radius:12px;padding:10px 4px;font-style:normal}
.vdmldbac-cd b{display:block;font-size:20px;font-weight:800;line-height:1.2;color:var(--clr-main)}
.vdmldbac-cd span{font-size:12px;color:var(--tx-2)}

/* 板块通用 */
.vdmldbac-sec{padding:56px 0}
.vdmldbac-sec--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.vdmldbac-shead{max-width:660px;margin-bottom:30px}
.vdmldbac-shead--mid{max-width:720px;margin:0 auto 30px;text-align:center}
.vdmldbac-shead h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.3px}
.vdmldbac-shead p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--tx-2)}

/* 搜索入口 */
.vdmldbac-search{display:flex;gap:12px;max-width:780px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-card)}
.vdmldbac-search input{flex:1;min-width:0;min-height:46px;padding:0 14px;border:0;outline:0;background:transparent;color:var(--tx-1);font-size:15px;border-radius:10px}
.vdmldbac-search input::placeholder{color:#9aa8c0}
.vdmldbac-search input:focus-visible{outline:2px solid var(--clr-main);outline-offset:2px}
.vdmldbac-quick{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.vdmldbac-quick a{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--tx-2);transition:background .2s,color .2s,border-color .2s}
.vdmldbac-quick a:hover{background:var(--clr-soft);color:var(--clr-main);border-color:#b9cdf5}

/* 分类矩阵 */
.vdmldbac-cats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.vdmldbac-cat{background:#fff;border:1px solid var(--line);border-radius:var(--rad-m);padding:22px;box-shadow:var(--sh-card)}
.vdmldbac-catname{display:inline-block;padding:5px 14px;border-radius:999px;font-size:15px;font-weight:700;color:var(--clr-main);background:var(--clr-soft)}
.vdmldbac-cat p{margin-top:12px;font-size:14px;line-height:1.75;color:var(--tx-2)}

/* 卡片 */
.vdmldbac-grid{display:grid;gap:var(--gap)}
.vdmldbac-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.vdmldbac-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.vdmldbac-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--rad-m);overflow:hidden;box-shadow:var(--sh-card);transition:transform .22s,box-shadow .22s}
.vdmldbac-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.vdmldbac-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--clr-soft)}
.vdmldbac-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.vdmldbac-card:hover .vdmldbac-thumb img{transform:scale(1.04)}
.vdmldbac-badge{position:absolute;left:10px;top:10px;z-index:2;padding:4px 10px;border-radius:999px;background:rgba(13,35,80,.8);color:#fff;font-size:12px;letter-spacing:.3px}
.vdmldbac-cbody{display:flex;flex-direction:column;gap:8px;flex:1;padding:16px 16px 18px}
.vdmldbac-cbody h3{font-size:16px;font-weight:700;line-height:1.4}
.vdmldbac-cbody p{font-size:14px;line-height:1.7;color:var(--tx-2)}
.vdmldbac-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.vdmldbac-tags span{padding:4px 10px;border-radius:8px;font-size:12px;color:var(--clr-main);background:var(--clr-soft)}

/* 卖点三连 */
.vdmldbac-tri{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.vdmldbac-tri li{background:var(--clr-bg);border:1px solid var(--line);border-radius:var(--rad-l);padding:26px;box-shadow:var(--sh-card)}
.vdmldbac-tri svg{width:30px;height:30px;margin-bottom:14px;color:var(--clr-main)}
.vdmldbac-tri h3{font-size:17px;font-weight:700}
.vdmldbac-tri p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--tx-2)}

/* 榜单 */
.vdmldbac-rank{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 26px}
.vdmldbac-rank li{display:flex;align-items:center;gap:14px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 6px 16px rgba(20,45,95,.05)}
.vdmldbac-rank i{min-width:26px;font-style:normal;font-size:17px;font-weight:800;color:#b9c8e4}
.vdmldbac-rank li:nth-child(-n+3) i{color:var(--clr-main)}
.vdmldbac-rank div{display:flex;flex-direction:column;min-width:0}
.vdmldbac-rank b{font-size:15px;line-height:1.4}
.vdmldbac-rank small{font-size:13px;color:var(--tx-2)}
.vdmldbac-rank em{margin-left:auto;flex:none;padding:3px 10px;border-radius:999px;font-style:normal;font-size:12px;color:var(--clr-main);background:var(--clr-soft);white-space:nowrap}

/* 专题横卡 */
.vdmldbac-card--row{flex-direction:row}
.vdmldbac-card--row .vdmldbac-thumb{width:42%;flex:none;aspect-ratio:auto}

/* 创作现场 */
.vdmldbac-story{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;align-items:center}
.vdmldbac-story figure{border-radius:var(--rad-l);overflow:hidden;box-shadow:var(--sh-card)}
.vdmldbac-story img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover}
.vdmldbac-steps{display:flex;flex-direction:column;gap:16px;margin-top:22px}
.vdmldbac-steps li{display:flex;gap:14px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 6px 16px rgba(20,45,95,.05)}
.vdmldbac-steps b{flex:none;font-size:13px;font-weight:800;color:var(--clr-main);padding-top:2px}
.vdmldbac-steps p{font-size:14px;line-height:1.8;color:var(--tx-2)}

/* 口碑 */
.vdmldbac-quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.vdmldbac-quote{padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--rad-m);box-shadow:var(--sh-card)}
.vdmldbac-quote p{font-size:15px;line-height:1.8}
.vdmldbac-quote footer{margin-top:14px;font-size:13px;color:var(--tx-2)}

/* 资讯 */
.vdmldbac-news{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.vdmldbac-new{display:flex;gap:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:var(--rad-m);box-shadow:var(--sh-card)}
.vdmldbac-new img{flex:none;width:132px;height:92px;border-radius:10px;object-fit:cover}
.vdmldbac-new h3{font-size:15px;font-weight:700;line-height:1.5}
.vdmldbac-newtag{display:block;margin-bottom:6px;font-size:13px;font-weight:600;color:var(--clr-main)}
.vdmldbac-new p{margin-top:6px;font-size:13px;line-height:1.7;color:var(--tx-2)}
.vdmldbac-new--text{flex-direction:column;justify-content:center;gap:4px}

/* 常见问题 */
.vdmldbac-faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 26px}
.vdmldbac-faq article{padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 6px 16px rgba(20,45,95,.05)}
.vdmldbac-faq h3{font-size:15px;font-weight:700}
.vdmldbac-faq p{margin-top:8px;font-size:14px;line-height:1.85;color:var(--tx-2)}

/* 收藏入口 */
.vdmldbac-favor{display:flex;flex-wrap:wrap;align-items:center;gap:24px;padding:34px 36px;border-radius:var(--rad-l);background:linear-gradient(120deg,#0d2350,#1e5bd6);color:#fff;box-shadow:0 18px 40px rgba(13,35,80,.28)}
.vdmldbac-favor h2{font-size:clamp(20px,2.4vw,26px);font-weight:800}
.vdmldbac-favor p{max-width:620px;margin-top:8px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.84)}
.vdmldbac-favor-act{margin-left:auto}
.vdmldbac-favor .vdmldbac-btn--main{background:#fff;color:#12439f;box-shadow:none}
.vdmldbac-favor .vdmldbac-btn--main:hover{background:#eef4ff}

/* 保障条 */
.vdmldbac-guard{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.vdmldbac-guard li{padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 6px 16px rgba(20,45,95,.05)}
.vdmldbac-guard b{display:block;margin-bottom:6px;font-size:15px}
.vdmldbac-guard p{font-size:13px;line-height:1.7;color:var(--tx-2)}

/* 页脚 */
.vdmldbac-foot{margin-top:20px;padding-top:52px;background:#0b1c3c;color:#c6d2e8}
.vdmldbac-fgrid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;padding-bottom:36px}
.vdmldbac-foot h3{margin-bottom:14px;font-size:15px;font-weight:700;color:#fff}
.vdmldbac-foot li{margin-bottom:10px;font-size:14px}
.vdmldbac-foot li a{transition:color .2s}
.vdmldbac-foot li a:hover{color:#fff}
.vdmldbac-fbrand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.vdmldbac-fbrand i{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,#4b8bff,#1e5bd6)}
.vdmldbac-fdesc{max-width:340px;margin-top:14px;font-size:14px;line-height:1.8;color:#93a5c6}
.vdmldbac-copy{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding:18px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#8397b8}

/* 底部固定条 */
.vdmldbac-bar{position:fixed;left:0;right:0;bottom:0;z-index:90;padding:10px 0;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(20,45,95,.08)}
.vdmldbac-bar-in{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.vdmldbac-bar p{font-size:14px;color:var(--tx-2)}
.vdmldbac-bar p b{color:var(--tx-1)}
.vdmldbac-bar .vdmldbac-btn{margin-left:auto;min-height:44px;padding:0 20px;font-size:14px}

@media (max-width:1024px){
  .vdmldbac-hgrid{grid-template-columns:1fr;gap:32px}
  .vdmldbac-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vdmldbac-cats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vdmldbac-tri{grid-template-columns:1fr}
  .vdmldbac-quotes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vdmldbac-guard{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vdmldbac-story{grid-template-columns:1fr;gap:28px}
  .vdmldbac-fgrid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .vdmldbac-hin{flex-wrap:wrap;gap:8px;padding:12px 0}
  .vdmldbac-nav{width:100%;margin-left:0;gap:0}
  .vdmldbac-rank{grid-template-columns:1fr}
  .vdmldbac-news{grid-template-columns:1fr}
  .vdmldbac-faq{grid-template-columns:1fr}
  .vdmldbac-card--row{flex-direction:row}
  .vdmldbac-card--row .vdmldbac-thumb{width:40%}
  .vdmldbac-favor{padding:26px 22px}
  .vdmldbac-favor-act{margin-left:0;width:100%}
  .vdmldbac-favor-act .vdmldbac-btn{width:100%}
}
@media (max-width:520px){
  body{padding-bottom:84px}
  .vdmldbac-sec{padding:42px 0}
  .vdmldbac-hero{padding:38px 0 34px}
  .vdmldbac-h1{font-size:28px}
  .vdmldbac-grid--4,.vdmldbac-grid--2,.vdmldbac-cats,.vdmldbac-quotes,.vdmldbac-guard,.vdmldbac-fgrid{grid-template-columns:1fr}
  .vdmldbac-card--row{flex-direction:column}
  .vdmldbac-card--row .vdmldbac-thumb{width:100%;aspect-ratio:16/10}
  .vdmldbac-new{flex-direction:column}
  .vdmldbac-new img{width:100%;height:150px}
  .vdmldbac-search{flex-direction:column}
  .vdmldbac-search .vdmldbac-btn{width:100%}
  .vdmldbac-bar p{display:none}
  .vdmldbac-bar .vdmldbac-btn{width:100%;margin-left:0}
}