/* roulang page: index */
:root{
  --za:#1f2a44;
  --zb:#b5513f;
  --zc:#f7f4ee;
  --zd:#1b1f27;
  --ze:#6b7280;
  --zf:#e3ddd3;
  --zg:16px;
  --zh:0 10px 30px rgba(27,31,39,.08);
  --zi:clamp(24px,4vw,64px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;color:var(--zd);background:var(--zc);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.bvgldtf-shell{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.bvgldtf-top{position:sticky;top:0;z-index:60;background:rgba(247,244,238,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--zf)}
.bvgldtf-top-in{display:flex;align-items:center;gap:18px;min-height:68px}
.bvgldtf-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.bvgldtf-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--za);color:#fff;font-size:18px;font-weight:700}
.bvgldtf-brand-txt{font-size:16px;font-weight:700;color:var(--za);white-space:nowrap}
.bvgldtf-nav{display:flex;align-items:center;gap:2px;margin-left:auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.bvgldtf-nav::-webkit-scrollbar{display:none}
.bvgldtf-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;font-size:15px;color:var(--ze);white-space:nowrap;transition:background .2s,color .2s}
.bvgldtf-nav a:hover{color:var(--za);background:rgba(31,42,68,.08)}
.bvgldtf-nav a:focus-visible{outline:2px solid var(--zb);outline-offset:2px}

/* 首屏 */
.bvgldtf-hero{position:relative;overflow:hidden;background:var(--za);color:#fff;padding:clamp(44px,7vw,88px) 0 clamp(48px,7vw,92px)}
.bvgldtf-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.38}
.bvgldtf-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(31,42,68,.97) 0%,rgba(31,42,68,.82) 45%,rgba(31,42,68,.58) 100%)}
.bvgldtf-hero-in{position:relative;z-index:2;max-width:880px}
.bvgldtf-kicker{display:inline-flex;align-items:center;padding:6px 14px;border:1px solid rgba(255,255,255,.28);border-radius:999px;font-size:13px;letter-spacing:.12em;color:#f0d5c3}
.bvgldtf-hero h1{font-size:clamp(30px,5.2vw,54px);line-height:1.15;font-weight:800;margin:20px 0 14px}
.bvgldtf-hero-sub{font-size:clamp(16px,2.1vw,20px);font-weight:600;color:#f3e7d8}
.bvgldtf-hero-txt{margin-top:18px;max-width:820px;font-size:15px;line-height:1.95;color:rgba(255,255,255,.82)}
.bvgldtf-checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 26px;margin-top:26px;max-width:820px}
.bvgldtf-checks li{position:relative;padding-left:28px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.86)}
.bvgldtf-checks li::before{content:"";position:absolute;left:2px;top:8px;width:13px;height:7px;border-left:2px solid #e5a37c;border-bottom:2px solid #e5a37c;transform:rotate(-45deg)}
.bvgldtf-hero-act{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

.bvgldtf-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 26px;border-radius:999px;background:var(--zb);color:#fff;font-size:15px;font-weight:600;border:1px solid transparent;box-shadow:0 8px 20px rgba(181,81,63,.28);transition:transform .2s,box-shadow .2s,background .2s}
.bvgldtf-btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(181,81,63,.34)}
.bvgldtf-btn:focus-visible{outline:3px solid #f0c9b8;outline-offset:2px}
.bvgldtf-btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;box-shadow:none}
.bvgldtf-btn-ghost:hover{background:rgba(255,255,255,.12);box-shadow:none}

/* 板块通用 */
.bvgldtf-sec{padding:var(--zi) 0}
.bvgldtf-sec-alt{background:#fff}
.bvgldtf-hd{max-width:820px;margin-bottom:34px}
.bvgldtf-eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--zb)}
.bvgldtf-hd h2{font-size:clamp(22px,3vw,32px);line-height:1.32;font-weight:800;color:var(--za);margin:10px 0 12px}
.bvgldtf-hd p{font-size:15px;line-height:1.9;color:var(--ze)}

/* 卖点三连 */
.bvgldtf-trio{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.bvgldtf-trio li{background:#fff;border:1px solid var(--zf);border-radius:var(--zg);padding:26px 22px;box-shadow:var(--zh)}
.bvgldtf-trio h3{font-size:17px;color:var(--za);margin-bottom:8px}
.bvgldtf-trio p{font-size:14px;line-height:1.8;color:var(--ze)}

/* 分类频道 */
.bvgldtf-matrix{display:flex;flex-wrap:wrap;gap:12px}
.bvgldtf-matrix li{display:flex;align-items:center;min-height:44px;padding:10px 20px;border-radius:12px;background:var(--zc);border:1px solid var(--zf);font-size:15px;font-weight:600;color:var(--za)}

/* 卡片墙 */
.bvgldtf-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.bvgldtf-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--zf);border-radius:var(--zg);overflow:hidden;box-shadow:var(--zh);transition:transform .25s,box-shadow .25s}
.bvgldtf-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(27,31,39,.13)}
.bvgldtf-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#eae5dc}
.bvgldtf-thumb img{width:100%;height:100%;object-fit:cover}
.bvgldtf-badge{position:absolute;top:12px;left:12px;padding:4px 10px;border-radius:999px;background:rgba(31,42,68,.86);color:#fff;font-size:12px;letter-spacing:.02em}
.bvgldtf-card-bd{padding:18px 20px 22px}
.bvgldtf-card-bd h3{font-size:17px;color:var(--za);margin-bottom:6px}
.bvgldtf-card-bd p{font-size:14px;line-height:1.75;color:var(--ze)}
.bvgldtf-chip{display:inline-block;margin-top:12px;padding:4px 10px;border-radius:999px;background:rgba(181,81,63,.1);color:var(--zb);font-size:12px;font-weight:600}

/* 专题卡 */
.bvgldtf-topics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.bvgldtf-topic{display:grid;grid-template-columns:160px minmax(0,1fr);background:#fff;border:1px solid var(--zf);border-radius:var(--zg);overflow:hidden;box-shadow:var(--zh);transition:transform .25s,box-shadow .25s}
.bvgldtf-topic:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(27,31,39,.13)}
.bvgldtf-topic .bvgldtf-thumb{aspect-ratio:auto;min-height:168px;height:100%}
.bvgldtf-topic-bd{display:flex;flex-direction:column;justify-content:center;padding:22px}
.bvgldtf-topic-bd h3{font-size:17px;color:var(--za);margin-bottom:8px}
.bvgldtf-topic-bd p{font-size:14px;line-height:1.75;color:var(--ze)}

/* 榜单 */
.bvgldtf-rank{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 26px}
.bvgldtf-rank li{display:flex;align-items:center;gap:14px;min-height:58px;padding:12px 18px;background:#fff;border:1px solid var(--zf);border-radius:12px}
.bvgldtf-no{display:grid;place-items:center;flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--zc);color:var(--za);font-size:14px;font-weight:700}
.bvgldtf-rank li:nth-child(-n+3) .bvgldtf-no{background:var(--zb);color:#fff}
.bvgldtf-rank b{font-size:15px;font-weight:700;color:var(--zd)}
.bvgldtf-meta{margin-left:auto;font-size:13px;color:var(--ze);white-space:nowrap}

/* 资讯 */
.bvgldtf-news li{display:flex;gap:18px;align-items:baseline;padding:17px 0;border-bottom:1px dashed var(--zf);font-size:15px}
.bvgldtf-news li:last-child{border-bottom:none}
.bvgldtf-date{flex:0 0 auto;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--zb)}

/* 指标 */
.bvgldtf-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.bvgldtf-stat{background:#fff;border:1px solid var(--zf);border-radius:var(--zg);padding:24px 20px}
.bvgldtf-stat b{display:block;margin-bottom:8px;font-size:15px;letter-spacing:.06em;color:var(--zb)}
.bvgldtf-stat p{font-size:14px;line-height:1.8;color:var(--ze)}

/* 口碑 */
.bvgldtf-quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.bvgldtf-quote{background:var(--zc);border:1px solid var(--zf);border-radius:var(--zg);padding:26px 22px;box-shadow:var(--zh)}
.bvgldtf-quote p{font-size:14px;line-height:1.9;color:var(--zd)}
.bvgldtf-quote cite{display:block;margin-top:14px;font-size:13px;font-style:normal;color:var(--ze)}

/* 反馈入口 */
.bvgldtf-contact{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;padding:clamp(28px,5vw,52px);border-radius:24px;background:var(--za);color:#fff}
.bvgldtf-contact-h{font-size:clamp(20px,2.6vw,28px);font-weight:800;margin-bottom:12px}
.bvgldtf-contact p{max-width:700px;font-size:14px;line-height:1.95;color:rgba(255,255,255,.8)}

/* 页脚 */
.bvgldtf-foot{background:#151a26;color:rgba(255,255,255,.66);padding:56px 0 0}
.bvgldtf-foot-grid{display:grid;grid-template-columns:1.5fr repeat(2,1fr) 1fr;gap:32px;padding-bottom:40px}
.bvgldtf-foot h4{margin-bottom:14px;font-size:15px;font-weight:700;color:#fff}
.bvgldtf-foot-txt{font-size:14px;line-height:1.85}
.bvgldtf-foot li{padding:5px 0;font-size:14px}
.bvgldtf-foot li a{transition:color .2s}
.bvgldtf-foot li a:hover{color:#fff}
.bvgldtf-foot li a:focus-visible{outline:2px solid var(--zb);outline-offset:2px}
.bvgldtf-copy{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px}

@media (max-width:1024px){
  .bvgldtf-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bvgldtf-trio{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bvgldtf-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bvgldtf-quotes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bvgldtf-foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .bvgldtf-top-in{gap:12px}
  .bvgldtf-brand-txt{font-size:15px}
  .bvgldtf-hero h1{font-size:clamp(26px,7vw,38px)}
  .bvgldtf-checks{grid-template-columns:1fr}
  .bvgldtf-trio{grid-template-columns:1fr}
  .bvgldtf-topics{grid-template-columns:1fr}
  .bvgldtf-topic{grid-template-columns:132px minmax(0,1fr)}
  .bvgldtf-rank{grid-template-columns:1fr}
  .bvgldtf-quotes{grid-template-columns:1fr}
  .bvgldtf-meta{white-space:normal}
}
@media (max-width:520px){
  .bvgldtf-cards{grid-template-columns:1fr}
  .bvgldtf-stats{grid-template-columns:1fr}
  .bvgldtf-topic{grid-template-columns:1fr}
  .bvgldtf-topic .bvgldtf-thumb{min-height:150px}
  .bvgldtf-foot-grid{grid-template-columns:1fr}
  .bvgldtf-hero-act .bvgldtf-btn{width:100%}
  .bvgldtf-contact .bvgldtf-btn{width:100%}
}