/* roulang page: index */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --shell:#0b0e13;
  --panel:#141922;
  --panel-2:#1b2230;
  --ink:#eef1f6;
  --ink-soft:#9aa5b5;
  --edge:rgba(255,255,255,.09);
  --amber:#e9b364;
  --jade:#4ecfb7;
  --radius-s:12px;
  --radius-l:20px;
  --lift:0 18px 40px rgba(0,0,0,.45);
  --gap-unit:clamp(16px,3vw,28px);
}
html{scroll-behavior:smooth}
body{background:var(--shell);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:8px}
.livbyk-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 18px}

/* 顶栏 */
.livbyk-top{position:sticky;top:0;z-index:40;background:rgba(11,14,19,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--edge)}
.livbyk-bar{max-width:1180px;margin:0 auto;padding:8px 16px 0;display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px}
.livbyk-logo{display:flex;align-items:center;gap:10px;min-height:44px}
.livbyk-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,var(--amber),#c2863a);color:#1a1206;font-weight:800;font-size:16px;display:grid;place-items:center;flex:none}
.livbyk-name{font-size:17px;font-weight:700;letter-spacing:.04em}
.livbyk-jump{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:999px;background:rgba(233,179,100,.14);border:1px solid rgba(233,179,100,.4);color:var(--amber);font-size:14px;font-weight:600;transition:background .2s}
.livbyk-jump:hover{background:rgba(233,179,100,.24)}
.livbyk-nav{order:3;flex:1 0 100%;display:flex;gap:2px;overflow-x:auto;padding-bottom:8px;scrollbar-width:none}
.livbyk-nav::-webkit-scrollbar{display:none}
.livbyk-nav a{display:flex;align-items:center;min-height:44px;padding:0 13px;border-radius:999px;color:var(--ink-soft);font-size:14px;white-space:nowrap;transition:color .2s,background .2s}
.livbyk-nav a:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.livbyk-nav a.is-on{color:#1a1206;background:var(--amber);font-weight:600}
@media(min-width:768px){
  .livbyk-bar{flex-wrap:nowrap;padding:10px 18px}
  .livbyk-nav{order:0;flex:1 1 auto;justify-content:flex-end;overflow:visible;padding-bottom:0}
  .livbyk-jump{margin-left:0}
}

/* 首屏 */
.livbyk-hero{position:relative;overflow:hidden;padding:54px 0 52px;border-bottom:1px solid var(--edge)}
.livbyk-hero-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.livbyk-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(58% 52% at 50% 32%,rgba(233,179,100,.22),transparent 72%),linear-gradient(180deg,rgba(11,14,19,.5),rgba(11,14,19,.95) 90%)}
.livbyk-hero .livbyk-wrap{position:relative;z-index:1;text-align:center}
.livbyk-kicker{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(233,179,100,.36);color:var(--amber);font-size:13px;letter-spacing:.14em}
.livbyk-h1{margin-top:18px;font-size:clamp(28px,7vw,54px);line-height:1.22;letter-spacing:.02em}
.livbyk-h1 em{font-style:normal;color:var(--amber)}
.livbyk-sub{margin-top:14px;color:var(--ink-soft);font-size:15px}
.livbyk-intro{margin:16px auto 0;max-width:720px;color:#c6cdd9;font-size:14px;line-height:1.9;text-align:left}
.livbyk-pills{margin:22px auto 0;display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.livbyk-pills li{display:flex;align-items:center;min-height:38px;padding:6px 14px;border-radius:999px;border:1px solid var(--edge);background:rgba(255,255,255,.035);color:#c6cdd9;font-size:13px}
.livbyk-hero-act{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.livbyk-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s}
.livbyk-btn--main{background:linear-gradient(140deg,var(--amber),#c2863a);color:#1a1206;box-shadow:0 10px 26px rgba(233,179,100,.26)}
.livbyk-btn--main:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(233,179,100,.34)}
.livbyk-btn--ghost{border-color:var(--edge);background:rgba(255,255,255,.045);color:var(--ink)}
.livbyk-btn--ghost:hover{background:rgba(255,255,255,.1)}

/* 通用板块 */
.livbyk-sec{padding:48px 0;scroll-margin-top:120px}
.livbyk-sec--alt{background:linear-gradient(180deg,rgba(255,255,255,.028),transparent 70%)}
@media(min-width:768px){.livbyk-sec{padding:66px 0}}
.livbyk-h2{font-size:clamp(20px,3.6vw,29px);line-height:1.35;letter-spacing:.02em}
.livbyk-h2 em{font-style:normal;color:var(--amber)}
.livbyk-lead{margin-top:12px;max-width:800px;color:var(--ink-soft);font-size:14px;line-height:1.85}
@media(min-width:768px){.livbyk-lead{font-size:15px}}

/* 产品价值 */
.livbyk-vals{display:grid;gap:14px;margin-top:26px;grid-template-columns:1fr}
.livbyk-val{padding:20px;border:1px solid var(--edge);border-radius:var(--radius-l);background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.014))}
.livbyk-val span{width:34px;height:34px;border-radius:11px;background:rgba(233,179,100,.15);color:var(--amber);font-weight:800;font-size:15px;display:grid;place-items:center;margin-bottom:12px}
.livbyk-val h3{font-size:16px;margin-bottom:8px}
.livbyk-val p{color:var(--ink-soft);font-size:14px;line-height:1.8}
@media(min-width:520px){.livbyk-vals{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.livbyk-vals{grid-template-columns:repeat(4,1fr)}}

/* 卡片通用 */
.livbyk-films{display:grid;gap:16px;margin-top:26px;grid-template-columns:repeat(2,1fr)}
@media(min-width:768px){.livbyk-films{grid-template-columns:repeat(3,1fr);gap:20px}}
.livbyk-card{transition:transform .25s}
.livbyk-card:hover{transform:translateY(-4px)}
.livbyk-shot{position:relative;display:block;overflow:hidden;border-radius:var(--radius-s);background:var(--panel-2);padding-top:148%}
.livbyk-shot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.livbyk-card:hover .livbyk-shot img{transform:scale(1.05)}
.livbyk-tag{position:absolute;left:8px;top:8px;padding:2px 8px;border-radius:6px;background:rgba(78,207,183,.92);color:#06231e;font-size:11px;font-weight:700}
.livbyk-score{position:absolute;right:8px;bottom:8px;padding:2px 9px;border-radius:999px;background:rgba(11,14,19,.8);color:var(--amber);font-size:12px;font-weight:700}
.livbyk-title{margin-top:10px;font-size:15px;font-weight:600;line-height:1.4}
.livbyk-meta{margin-top:3px;color:var(--ink-soft);font-size:13px}

/* 分类频道 */
.livbyk-cats{display:grid;gap:12px;margin-top:26px;grid-template-columns:1fr}
.livbyk-cats li{padding:18px;border:1px solid var(--edge);border-radius:16px;background:linear-gradient(150deg,rgba(78,207,183,.09),rgba(255,255,255,.018))}
.livbyk-catname{display:inline-block;padding:2px 11px;border-radius:8px;background:rgba(78,207,183,.14);color:var(--jade);font-size:15px;font-weight:700}
.livbyk-cats p{margin-top:10px;color:var(--ink-soft);font-size:14px;line-height:1.8}
@media(min-width:520px){.livbyk-cats{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.livbyk-cats{grid-template-columns:repeat(3,1fr)}}

/* 排行榜 */
.livbyk-rank{display:grid;gap:10px;margin-top:26px;grid-template-columns:1fr}
.livbyk-rank li{display:flex;align-items:center;gap:14px;min-height:64px;padding:12px 16px;border:1px solid var(--edge);border-radius:14px;background:rgba(255,255,255,.025)}
.livbyk-no{flex:none;width:32px;color:var(--amber);font-size:17px;font-weight:800;font-variant-numeric:tabular-nums}
.livbyk-rank h3{font-size:15px;font-weight:600}
.livbyk-rank p{margin-top:2px;color:var(--ink-soft);font-size:12.5px}
.livbyk-trend{margin-left:auto;padding:3px 10px;border-radius:999px;border:1px solid rgba(78,207,183,.32);color:var(--jade);font-size:12px;white-space:nowrap}
@media(min-width:768px){.livbyk-rank{grid-template-columns:1fr 1fr}}

/* 主题片单 */
.livbyk-specs{display:grid;gap:16px;margin-top:26px;grid-template-columns:1fr}
.livbyk-spec .livbyk-shot{padding-top:64%}
.livbyk-spec h3{margin-top:12px;font-size:16px}
.livbyk-spec p{margin-top:6px;color:var(--ink-soft);font-size:14px;line-height:1.8}
.livbyk-spec em{display:inline-block;margin-top:10px;font-style:normal;font-size:12.5px;color:var(--amber);border:1px solid rgba(233,179,100,.3);border-radius:999px;padding:3px 10px}
@media(min-width:768px){.livbyk-specs{grid-template-columns:repeat(3,1fr)}}

/* 高分好评 */
.livbyk-praises{display:grid;gap:12px;margin-top:26px;grid-template-columns:1fr}
.livbyk-praises li{display:flex;gap:14px;padding:16px;border:1px solid var(--edge);border-radius:16px;background:rgba(255,255,255,.024)}
.livbyk-praise-score{flex:none;width:46px;height:46px;border-radius:14px;background:rgba(233,179,100,.14);color:var(--amber);font-weight:800;font-size:15px;display:grid;place-items:center}
.livbyk-praises h3{font-size:15px;font-weight:600}
.livbyk-praises p{margin-top:4px;color:var(--ink-soft);font-size:13.5px;line-height:1.75}
@media(min-width:768px){.livbyk-praises{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.livbyk-praises{grid-template-columns:repeat(3,1fr)}}

/* 多端入口 */
.livbyk-ends{display:grid;gap:12px;margin-top:26px;grid-template-columns:1fr 1fr}
.livbyk-ends li{padding:18px;border:1px solid var(--edge);border-radius:16px;background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012))}
.livbyk-ends h3{font-size:15px;color:var(--amber);margin-bottom:8px}
.livbyk-ends p{color:var(--ink-soft);font-size:13.5px;line-height:1.8}
@media(min-width:1024px){.livbyk-ends{grid-template-columns:repeat(4,1fr)}}

/* 评价墙 */
.livbyk-wall{display:grid;gap:12px;margin-top:26px;grid-template-columns:1fr}
.livbyk-wall blockquote{padding:18px;border:1px solid var(--edge);border-left:3px solid var(--jade);border-radius:14px;background:rgba(255,255,255,.022)}
.livbyk-wall p{color:#cdd4df;font-size:14px;line-height:1.8}
.livbyk-wall cite{display:block;margin-top:10px;color:var(--ink-soft);font-size:13px;font-style:normal}
@media(min-width:768px){.livbyk-wall{grid-template-columns:1fr 1fr}}

/* 播放环境 */
.livbyk-req{margin-top:26px;display:grid;gap:1px;background:var(--edge);border:1px solid var(--edge);border-radius:16px;overflow:hidden}
.livbyk-req dt{padding:14px 18px;background:var(--panel);font-size:14px;font-weight:600;color:var(--ink)}
.livbyk-req dd{padding:14px 18px;background:rgba(255,255,255,.02);color:var(--ink-soft);font-size:14px;line-height:1.8}
@media(min-width:768px){.livbyk-req{grid-template-columns:220px 1fr}}

/* 资讯 */
.livbyk-news{display:grid;gap:12px;margin-top:26px;grid-template-columns:1fr}
.livbyk-news li{display:flex;align-items:center;gap:14px;padding:12px;border:1px solid var(--edge);border-radius:16px;background:rgba(255,255,255,.024)}
.livbyk-news img{flex:none;width:92px;height:70px;object-fit:cover;border-radius:10px}
.livbyk-news h3{font-size:14.5px;line-height:1.5;font-weight:600}
.livbyk-news p{margin-top:5px;color:var(--ink-soft);font-size:12.5px}
@media(min-width:768px){.livbyk-news{grid-template-columns:repeat(3,1fr)}}

/* 问答 */
.livbyk-faq{margin-top:26px;display:grid;gap:10px;max-width:900px}
.livbyk-faq details{border:1px solid var(--edge);border-radius:14px;background:rgba(255,255,255,.024);padding:0 18px}
.livbyk-faq summary{display:flex;align-items:center;min-height:48px;padding:12px 0;cursor:pointer;font-size:15px;font-weight:600;list-style:none}
.livbyk-faq summary::-webkit-details-marker{display:none}
.livbyk-faq summary::after{content:"+";margin-left:auto;color:var(--amber);font-size:20px;line-height:1}
.livbyk-faq details[open] summary::after{content:"−"}
.livbyk-faq p{padding:0 0 16px;color:var(--ink-soft);font-size:14px;line-height:1.85}

/* 收口 */
.livbyk-cta{position:relative;overflow:hidden;padding:60px 0;border-top:1px solid var(--edge);border-bottom:1px solid var(--edge)}
.livbyk-cta-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3}
.livbyk-cta::after{content:"";position:absolute;inset:0;background:radial-gradient(55% 60% at 50% 50%,rgba(78,207,183,.2),transparent 72%),linear-gradient(180deg,rgba(11,14,19,.86),rgba(11,14,19,.96))}
.livbyk-cta .livbyk-wrap{position:relative;z-index:1;text-align:center}
.livbyk-cta h2{font-size:clamp(21px,4vw,32px);line-height:1.35}
.livbyk-cta p{margin:12px auto 0;max-width:620px;color:#c3cbd7;font-size:14px;line-height:1.85}
.livbyk-cta .livbyk-hero-act{margin-top:24px}

/* 页脚 */
.livbyk-foot{background:#080a0e;padding:44px 0 24px}
.livbyk-foot-grid{display:grid;gap:26px;grid-template-columns:1fr 1fr}
.livbyk-foot h3{margin-bottom:12px;color:var(--amber);font-size:14px;letter-spacing:.08em}
.livbyk-foot p{color:var(--ink-soft);font-size:13.5px;line-height:1.85}
.livbyk-foot li{margin-bottom:8px;font-size:14px}
.livbyk-foot li a{color:var(--ink-soft);display:inline-flex;align-items:center;min-height:32px;transition:color .2s}
.livbyk-foot li a:hover{color:var(--amber)}
.livbyk-copy{margin-top:28px;padding-top:18px;border-top:1px solid var(--edge);text-align:center;color:#6c7686;font-size:13px}
@media(min-width:1024px){.livbyk-foot-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}