/* roulang page: index */
:root{
  --ink:#14161c;
  --deep:#1c1f27;
  --ember:#e2563a;
  --paper:#f7f5f1;
  --mute:#6b7180;
  --edge:#e4dfd8;
  --rad:16px;
  --lift:0 12px 32px rgba(20,22,28,.10);
  --sec:clamp(50px,6vw,86px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.75;-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;width:100%;height:100%;object-fit:cover}
input{font:inherit}
:focus-visible{outline:2px solid var(--ember);outline-offset:3px}
.rbfphy-wrap{width:min(1180px,92vw);margin:0 auto}

/* 顶栏 */
.rbfphy-top{position:sticky;top:0;z-index:30;background:rgba(247,245,241,.94);border-bottom:1px solid var(--edge);backdrop-filter:blur(12px)}
.rbfphy-topin{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:10px 0}
.rbfphy-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;letter-spacing:.6px;min-height:44px}
.rbfphy-mark{width:34px;height:34px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800}
.rbfphy-nav{display:flex;gap:2px;overflow-x:auto;max-width:100%;scrollbar-width:none}
.rbfphy-nav::-webkit-scrollbar{display:none}
.rbfphy-nav a{display:flex;align-items:center;min-height:44px;padding:0 13px;border-radius:999px;font-size:14px;color:var(--mute);white-space:nowrap;transition:color .18s,background .18s}
.rbfphy-nav a:hover{color:var(--ink);background:#fff}
@media(min-width:768px){
  .rbfphy-topin{flex-wrap:nowrap;padding:0;height:68px}
}

/* 首屏 */
.rbfphy-hero{position:relative;background:var(--ink) url("/assets/images/backpic/back-1.webp") center/cover no-repeat;color:#fff;isolation:isolate}
.rbfphy-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,rgba(9,10,14,.95),rgba(9,10,14,.86) 48%,rgba(9,10,14,.56))}
.rbfphy-heroin{display:grid;gap:32px;padding:46px 0 56px}
.rbfphy-kicker{display:inline-block;font-size:12px;letter-spacing:2px;color:#ffb6a3;border:1px solid rgba(255,182,163,.45);border-radius:999px;padding:5px 12px;margin-bottom:16px}
.rbfphy-hero h1{font-size:clamp(27px,5.6vw,50px);line-height:1.24;letter-spacing:1px;font-weight:800;margin-bottom:14px}
.rbfphy-hl{color:#ff9a7d}
.rbfphy-sub{font-size:16px;color:#dfe1e7;margin-bottom:14px}
.rbfphy-intro{font-size:14px;line-height:1.85;color:#b9bcc6;max-width:560px;margin-bottom:24px}
.rbfphy-acts{display:flex;flex-wrap:wrap;gap:12px}
.rbfphy-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 24px;border-radius:999px;background:var(--ember);color:#fff;font-size:15px;font-weight:600;box-shadow:0 10px 24px rgba(226,86,58,.28);transition:transform .2s,box-shadow .2s}
.rbfphy-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(226,86,58,.36)}
.rbfphy-btn--ghost{background:transparent;border:1px solid rgba(255,255,255,.42);box-shadow:none}
.rbfphy-btn--ghost:hover{background:rgba(255,255,255,.12);box-shadow:none}
.rbfphy-pick{width:100%;max-width:330px;margin:0 auto;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:14px}
.rbfphy-thumb{position:relative;border-radius:14px;overflow:hidden;background:#232730;aspect-ratio:3/4}
.rbfphy-thumb img{transition:transform .5s ease}
.rbfphy-thumb--pick{aspect-ratio:4/5}
.rbfphy-badge{position:absolute;top:10px;left:10px;background:rgba(12,14,18,.78);color:#fff;font-size:12px;padding:3px 8px;border-radius:6px;letter-spacing:.5px}
.rbfphy-score{position:absolute;right:10px;bottom:10px;background:var(--ember);color:#fff;font-size:12px;font-weight:700;padding:3px 8px;border-radius:6px}
.rbfphy-pickname{font-size:17px;font-weight:700;margin-top:14px}
.rbfphy-pickmeta{font-size:13px;color:#a8adba;margin-top:4px}
@media(min-width:1024px){
  .rbfphy-heroin{grid-template-columns:1.18fr .82fr;gap:56px;align-items:center;padding:84px 0 92px}
}

/* 板块通用 */
.rbfphy-sec{padding:var(--sec) 0}
.rbfphy-sec--alt{background:#fff}
.rbfphy-sec h2{font-size:clamp(20px,2.6vw,27px);letter-spacing:.4px;line-height:1.35}
.rbfphy-lead{font-size:14px;color:var(--mute);line-height:1.85;max-width:760px;margin:12px 0 26px}

/* 卖点三连 */
.rbfphy-trio{display:grid;gap:16px}
.rbfphy-trioitem{background:#fff;border:1px solid var(--edge);border-radius:var(--rad);padding:24px 22px}
.rbfphy-num{display:block;font-size:12px;letter-spacing:2px;color:var(--ember);font-weight:700;margin-bottom:10px}
.rbfphy-trioitem h3{font-size:16px;margin-bottom:8px}
.rbfphy-trioitem p{font-size:14px;color:var(--mute);line-height:1.8}
@media(min-width:768px){
  .rbfphy-trio{grid-template-columns:repeat(3,1fr);gap:20px}
}

/* 分类频道 */
.rbfphy-cats{display:grid;gap:14px;grid-template-columns:1fr}
.rbfphy-cat{background:var(--paper);border:1px solid var(--edge);border-radius:14px;padding:18px 16px;transition:border-color .2s,transform .2s}
.rbfphy-cat:hover{border-color:#d8b4a8;transform:translateY(-3px)}
.rbfphy-cat b{display:block;font-size:15px;margin-bottom:6px}
.rbfphy-cat span{font-size:13px;color:var(--mute);line-height:1.7}
@media(min-width:520px){
  .rbfphy-cats{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1024px){
  .rbfphy-cats{grid-template-columns:repeat(3,1fr)}
}

/* 卡片网格 */
.rbfphy-grid{display:grid;gap:16px;grid-template-columns:repeat(2,1fr)}
.rbfphy-card{background:#fff;border:1px solid var(--edge);border-radius:var(--rad);padding:10px;transition:transform .22s,box-shadow .22s}
.rbfphy-card:hover{transform:translateY(-4px);box-shadow:var(--lift)}
.rbfphy-card:hover .rbfphy-thumb img{transform:scale(1.05)}
.rbfphy-cardname{font-size:14px;font-weight:600;margin-top:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rbfphy-cardtag{font-size:12px;color:var(--mute);margin-top:2px}
@media(min-width:768px){
  .rbfphy-grid{grid-template-columns:repeat(3,1fr);gap:20px}
}
@media(min-width:1024px){
  .rbfphy-grid{grid-template-columns:repeat(6,1fr);gap:16px}
}

/* 专题 */
.rbfphy-topics{display:grid;gap:18px}
.rbfphy-topic{position:relative;overflow:hidden;border-radius:18px;aspect-ratio:16/10;color:#fff}
.rbfphy-topic img{transition:transform .5s ease}
.rbfphy-topic:hover img{transform:scale(1.06)}
.rbfphy-topicbody{position:absolute;left:0;right:0;bottom:0;padding:22px;background:linear-gradient(transparent,rgba(10,12,16,.9))}
.rbfphy-topicbody h3{font-size:18px;margin-bottom:6px}
.rbfphy-topicbody p{font-size:13px;color:#d4d7de;line-height:1.7}
@media(min-width:768px){
  .rbfphy-topics{grid-template-columns:repeat(2,1fr)}
}

/* 排行榜 */
.rbfphy-rank{display:grid;gap:6px}
.rbfphy-rankitem{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:12px;background:#fff;border:1px solid transparent;min-height:52px;transition:transform .2s,border-color .2s}
.rbfphy-rankitem:hover{border-color:var(--edge);transform:translateX(3px)}
.rbfphy-idx{width:26px;height:26px;flex:none;display:grid;place-items:center;border-radius:8px;background:#f0ece4;color:var(--mute);font-size:13px;font-weight:700}
.rbfphy-rankitem:nth-child(-n+3) .rbfphy-idx{background:var(--ink);color:#fff}
.rbfphy-rankname{flex:1;font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rbfphy-tag{font-size:11px;color:var(--mute);border:1px solid var(--edge);border-radius:6px;padding:1px 6px;flex:none}
.rbfphy-rankpts{font-size:13px;color:var(--ember);font-weight:700}
@media(min-width:768px){
  .rbfphy-rank{grid-template-columns:repeat(2,1fr);gap:6px 26px}
}

/* 高分横排 */
.rbfphy-lines{display:grid;gap:14px}
.rbfphy-line{display:flex;gap:14px;background:#fff;border:1px solid var(--edge);border-radius:var(--rad);padding:12px;transition:transform .22s,box-shadow .22s}
.rbfphy-line:hover{transform:translateY(-3px);box-shadow:var(--lift)}
.rbfphy-line .rbfphy-thumb{width:88px;flex:none;aspect-ratio:3/4;border-radius:10px}
.rbfphy-linebody{display:flex;flex-direction:column;justify-content:center;gap:4px;min-width:0}
.rbfphy-linebody h3{font-size:15px}
.rbfphy-linepts{font-size:13px;font-weight:700;color:var(--ember)}
.rbfphy-linebody p{font-size:13px;color:var(--mute);line-height:1.7}
@media(min-width:1024px){
  .rbfphy-lines{grid-template-columns:repeat(3,1fr)}
}

/* 资讯 */
.rbfphy-news{border-top:1px solid var(--edge)}
.rbfphy-newsitem{display:grid;gap:6px;padding:20px 0;border-bottom:1px solid var(--edge)}
.rbfphy-when{font-size:12px;color:var(--ember);letter-spacing:1px;font-weight:600}
.rbfphy-newsitem h3{font-size:16px;margin-bottom:4px}
.rbfphy-newsitem p{font-size:13px;color:var(--mute);line-height:1.75}
@media(min-width:768px){
  .rbfphy-newsitem{grid-template-columns:110px 1fr;gap:20px;align-items:baseline}
}

/* 深色观察区 */
.rbfphy-watch{position:relative;isolation:isolate;background:var(--deep) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;color:#fff;padding:var(--sec) 0}
.rbfphy-watch::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(18,20,26,.94),rgba(18,20,26,.87))}
.rbfphy-watch h2{color:#fff}
.rbfphy-watch .rbfphy-lead{color:#b7bbc5}
.rbfphy-stats{display:grid;gap:16px;grid-template-columns:1fr}
.rbfphy-stat{border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:20px 18px;background:rgba(255,255,255,.04)}
.rbfphy-stat b{display:block;font-size:16px;color:#ffb6a3;margin-bottom:6px}
.rbfphy-stat span{font-size:13px;color:#c2c6d0;line-height:1.7}
@media(min-width:520px){
  .rbfphy-stats{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1024px){
  .rbfphy-stats{grid-template-columns:repeat(4,1fr)}
}

/* 口碑 */
.rbfphy-voices{display:grid;gap:16px}
.rbfphy-voice{background:var(--paper);border:1px solid var(--edge);border-radius:var(--rad);padding:22px}
.rbfphy-voice p{font-size:14px;line-height:1.8;color:#31343c}
.rbfphy-voice cite{display:block;margin-top:12px;font-size:12px;color:var(--mute);font-style:normal}
@media(min-width:768px){
  .rbfphy-voices{grid-template-columns:repeat(3,1fr)}
}

/* 问答 */
.rbfphy-faq{display:grid;gap:14px}
.rbfphy-faqitem{background:#fff;border:1px solid var(--edge);border-left:3px solid var(--ember);border-radius:12px;padding:18px 20px}
.rbfphy-faqitem h3{font-size:15px;margin-bottom:6px}
.rbfphy-faqitem p{font-size:13px;color:var(--mute);line-height:1.8}
@media(min-width:1024px){
  .rbfphy-faq{grid-template-columns:repeat(2,1fr);gap:16px 24px}
}

/* 收口 */
.rbfphy-end{background:var(--ink);color:#fff;padding:var(--sec) 0;text-align:center}
.rbfphy-end h2{font-size:clamp(20px,3vw,28px);margin-bottom:12px}
.rbfphy-end p{font-size:14px;color:#b9bcc6;max-width:600px;margin:0 auto 22px;line-height:1.85}

/* 页脚 */
.rbfphy-foot{background:#101218;color:#a9adb8;padding:56px 0 0;font-size:13px}
.rbfphy-fgrid{display:grid;gap:28px;grid-template-columns:1fr}
.rbfphy-fcol h3{font-size:14px;color:#fff;margin-bottom:12px;letter-spacing:.5px}
.rbfphy-fcol p{line-height:1.85;color:#8f949f}
.rbfphy-fcol li a{display:inline-flex;align-items:center;min-height:34px;color:#a9adb8;transition:color .2s}
.rbfphy-fcol li a:hover{color:#fff}
.rbfphy-copy{margin-top:36px;border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:12px;color:#767b86;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
@media(min-width:520px){
  .rbfphy-fgrid{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1024px){
  .rbfphy-fgrid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
}