/* roulang page: index */
:root{
  --ink:#0E1411;
  --ink-soft:#202824;
  --sand:#F4F1E9;
  --card:#FFFFFF;
  --orange:#F0552A;
  --orange-deep:#D8451F;
  --green:#1B6B4F;
  --muted:#6B746E;
  --line:rgba(14,20,17,.10);
  --line-dark:rgba(244,241,233,.14);
  --on-dark:#F4F1E9;
  --on-dark-muted:rgba(244,241,233,.72);
  --r-card:10px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(14,20,17,.06),0 8px 24px -12px rgba(14,20,17,.18);
  --shadow-2:0 2px 4px rgba(14,20,17,.08),0 16px 34px -16px rgba(14,20,17,.26);
  --container:1240px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed",Impact,"Arial Narrow",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--sand);color:var(--ink-soft);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--green)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.25}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(240,85,42,.22)}
.container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.section{padding:96px 0}
.section-tight{padding:72px 0}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:2px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--sand);
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(14,20,17,.06),0 10px 24px -20px rgba(14,20,17,.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:26px;height:26px;border-radius:6px;background:var(--orange);position:relative;display:inline-block}
.brand-mark::after{content:"";position:absolute;left:9px;top:6px;width:8px;height:14px;border-right:3px solid #fff;border-bottom:3px solid #fff;transform:rotate(38deg)}
.brand-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.site-nav{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:15px;color:var(--ink-soft);padding:6px 0;font-weight:500}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:transparent;border-radius:var(--r-btn);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink)}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-ghost-light,.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;line-height:1;
  padding:14px 22px;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-main{background:var(--orange);color:#fff}
.btn-main:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--on-dark)}
.btn-ghost-light{background:transparent;color:var(--on-dark);border:1.5px solid rgba(244,241,233,.55)}
.btn-ghost-light:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark)}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover{background:var(--orange);color:#fff}
.btn-sm{padding:11px 18px;font-size:14px}
.btn-lg{padding:16px 28px;font-size:16px}

/* ---------- hero ---------- */
.hero{background:var(--ink);color:var(--on-dark);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(244,241,233,.055) 1px,transparent 1px);background-size:22px 22px;pointer-events:none}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:88px 0 96px}
.hero h1{color:var(--on-dark);font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.14;margin-bottom:20px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.06em;color:var(--on-dark-muted);font-weight:500;margin-bottom:22px}
.eyebrow-line{display:inline-block;width:26px;height:2px;background:var(--orange)}
.hero-sub{color:var(--on-dark-muted);font-size:17px;line-height:1.75;max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:flex;align-items:stretch;gap:0;flex-wrap:wrap}
.hero-stats li{padding:0 26px;border-left:1px solid var(--line-dark);display:flex;flex-direction:column;gap:2px}
.hero-stats li:first-child{padding-left:0;border-left:0}
.stat-num{font-family:var(--font-num);font-size:26px;font-weight:700;letter-spacing:.02em;color:var(--on-dark);line-height:1.1}
.stat-label{font-size:12.5px;letter-spacing:.06em;color:var(--on-dark-muted)}
.hero-visual{position:relative;min-height:400px}
.hero-visual-bg{position:absolute;inset:0;border-radius:14px;background-size:cover;background-position:center;background-color:#1c2a23;overflow:hidden;border:1px solid rgba(244,241,233,.10)}
.hero-visual-veil{position:absolute;inset:0;background:rgba(14,20,17,.52)}
.hero-shot{position:absolute;left:26px;top:32px;width:calc(100% - 52px);height:calc(100% - 64px);object-fit:cover;border-radius:10px;border:1px solid rgba(244,241,233,.24);box-shadow:0 24px 44px -26px rgba(0,0,0,.85);z-index:2}
.hero-watermark{position:absolute;right:10px;bottom:-14px;font-family:var(--font-num);font-size:104px;line-height:1;font-weight:700;color:rgba(244,241,233,.12);z-index:3;pointer-events:none;letter-spacing:.02em}

/* ---------- generic section head ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.3}
.section-head p{color:var(--muted);max-width:560px;margin:12px 0 0}
.link-more{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--ink);border-bottom:1px solid transparent;padding-bottom:2px}
.link-more:hover{color:var(--orange);border-bottom-color:var(--orange)}
.eyebrow-dark{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.06em;color:var(--muted);margin-bottom:14px;font-weight:500}
.eyebrow-dark .eyebrow-line{background:var(--orange)}

/* ---------- value list ---------- */
.value-grid{display:grid;grid-template-columns:8fr 4fr;gap:56px;align-items:start}
.value-item{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:34px 0;border-top:1px solid var(--line);align-items:start}
.value-item:first-child{border-top:0;padding-top:0}
.value-item:nth-child(2){padding-left:36px}
.value-item:nth-child(3){padding-left:72px}
.value-num{font-family:var(--font-num);font-size:52px;line-height:1;font-weight:700;color:transparent;-webkit-text-stroke:1px rgba(14,20,17,.34);letter-spacing:.02em}
.value-item h3{font-size:20px;margin-bottom:10px}
.value-item p{color:var(--muted);margin:0;max-width:520px}
.value-aside{position:sticky;top:96px}
.value-aside img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line);background:#e7e3d8}
.value-aside figcaption{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.7}

/* ---------- carousel ---------- */
.shot-carousel .carousel-inner{overflow:visible}
.shot-frame{aspect-ratio:16/10;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#e7e3d8}
.shot-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.shot-frame:hover img{transform:scale(1.03)}
.shot-caption{padding-top:18px;max-width:640px}
.shot-tag{display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--green);background:rgba(27,107,79,.10);border-radius:999px;padding:3px 10px;margin-bottom:10px;font-weight:600}
.shot-caption h3{font-size:18px;margin-bottom:6px}
.shot-caption p{color:var(--muted);font-size:14.5px;margin:0}
.shot-controls{display:flex;align-items:center;gap:18px;margin-top:28px}
.carousel-arrow{width:46px;height:46px;border-radius:var(--r-btn);border:1.5px solid var(--ink);background:transparent;color:var(--ink);font-size:18px;line-height:1;display:inline-flex;align-items:center;justify-content:center;transition:background .18s ease,color .18s ease}
.carousel-arrow:hover{background:var(--ink);color:var(--on-dark)}
.shot-index{font-family:var(--font-num);font-size:18px;letter-spacing:.08em;color:var(--muted)}
.shot-index b{color:var(--ink);font-weight:700}
.shot-progress{flex:1 1 auto;max-width:320px;height:2px;background:var(--line);overflow:hidden;border-radius:2px}
.shot-progress i{display:block;height:100%;width:100%;background:var(--orange);transform-origin:left;animation:shotProgress 6s linear infinite}
@keyframes shotProgress{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.shot-carousel:hover ~ .shot-controls .shot-progress i{animation-play-state:paused}

/* ---------- system requirements ---------- */
.section-dark{background:var(--ink);color:var(--on-dark)}
.section-dark h2{color:var(--on-dark)}
.section-dark .section-head p{color:var(--on-dark-muted)}
.section-dark .eyebrow-dark{color:var(--on-dark-muted)}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-dark);border:1px solid var(--line-dark);border-radius:var(--r-card);overflow:hidden}
.req-item{background:var(--ink);padding:32px 28px}
.req-item h3{color:var(--on-dark);font-size:19px;margin-bottom:8px}
.req-item .req-sub{font-size:13px;color:var(--on-dark-muted);margin-bottom:22px}
.req-list dt{font-size:12.5px;letter-spacing:.06em;color:var(--on-dark-muted);font-weight:500;margin-bottom:6px}
.req-list dd{margin:0 0 18px;display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-block;font-size:13px;line-height:1.4;padding:5px 11px;border-radius:999px;border:1px solid var(--line-dark);color:var(--on-dark);background:rgba(244,241,233,.06)}
.req-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--on-dark);border-bottom:1px solid rgba(244,241,233,.35);padding-bottom:2px;transition:color .18s ease,border-color .18s ease}
.req-link:hover{color:var(--orange);border-bottom-color:var(--orange)}

/* ---------- reviews ---------- */
.review-wall{column-count:3;column-gap:24px}
.review-card{break-inside:avoid;display:inline-block;width:100%;margin:0 0 24px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.review-score{display:inline-flex;align-items:center;gap:6px;background:var(--orange);color:#fff;font-size:12.5px;font-weight:700;border-radius:4px;padding:3px 8px;margin-bottom:14px;letter-spacing:.02em}
.review-text{font-size:15px;color:var(--ink-soft);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.review-foot{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--green);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex:0 0 auto}
.review-name{font-size:13.5px;color:var(--muted)}
.device-pill{margin-left:auto;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 10px}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:28px;align-items:start}
.news-feature{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.news-feature-img{aspect-ratio:4/3;overflow:hidden;background:#e7e3d8}
.news-feature-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-feature:hover .news-feature-img img{transform:scale(1.03)}
.news-feature-body{padding:24px}
.news-feature-body h3{font-size:21px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature-body p{color:var(--muted);font-size:14.5px;margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.pill{display:inline-block;font-size:12px;font-weight:600;color:var(--green);background:rgba(27,107,79,.10);border-radius:999px;padding:3px 10px}
.news-side{display:flex;flex-direction:column;gap:0}
.news-row{display:flex;align-items:flex-start;gap:16px;padding:20px 0;border-top:1px solid var(--line);transition:padding-left .2s ease}
.news-row:first-child{border-top:0;padding-top:0}
.news-row:hover{padding-left:6px}
.news-row-body{flex:1 1 auto;min-width:0}
.news-row h3{font-size:16.5px;line-height:1.45;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row p{color:var(--muted);font-size:14px;margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-arrow{color:var(--orange);font-size:18px;line-height:1.6;flex:0 0 auto}
.news-empty{border:1px dashed rgba(14,20,17,.24);border-radius:var(--r-card);padding:48px 28px;text-align:center;background:rgba(255,255,255,.55)}
.news-empty svg{width:38px;height:38px;color:var(--muted);margin-bottom:14px}
.news-empty p{color:var(--muted);margin-bottom:20px}

/* ---------- download block ---------- */
.dl-block{background:var(--ink);color:var(--on-dark);border-radius:var(--r-card);padding:56px;display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;position:relative;overflow:hidden}
.dl-block::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border:1px solid rgba(244,241,233,.10);border-radius:50%;pointer-events:none}
.dl-block h2{color:var(--on-dark);font-size:clamp(1.5rem,2.4vw,2rem);margin-bottom:12px}
.dl-block .dl-desc{color:var(--on-dark-muted);font-size:15px;margin-bottom:26px}
.qr-box{width:120px;height:120px;background:#fff;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:10px}
.qr-mark{width:58px;height:58px;border-radius:3px;background-image:repeating-conic-gradient(var(--ink) 0 25%,#fff 0 50%);background-size:12px 12px}
.qr-text{font-size:11px;color:var(--ink);letter-spacing:.04em;font-weight:600}
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.dl-btn{display:flex;flex-direction:column;gap:4px;padding:18px 20px;border-radius:var(--r-btn);border:1px solid rgba(244,241,233,.28);color:var(--on-dark);background:transparent;transition:background .18s ease,transform .18s ease,border-color .18s ease}
.dl-btn:hover{background:rgba(244,241,233,.08);color:var(--on-dark);transform:translateY(-1px);border-color:rgba(244,241,233,.5)}
.dl-btn-primary{background:var(--orange);border-color:var(--orange);color:#fff}
.dl-btn-primary:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff}
.dl-name{font-size:16px;font-weight:600}
.dl-meta{font-size:12px;opacity:.78;letter-spacing:.02em}
.dl-hash{margin-top:26px;font-family:var(--font-num);font-size:13px;letter-spacing:.08em;color:rgba(244,241,233,.55);border-top:1px solid var(--line-dark);padding-top:18px}

/* ---------- faq ---------- */
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-item:first-of-type{border-top:1px solid var(--line)}
.accordion-button{background:transparent;box-shadow:none!important;color:var(--ink);font-size:17px;font-weight:600;padding:22px 40px 22px 16px;border-left:4px solid transparent;border-radius:0!important;line-height:1.5}
.accordion-button:not(.collapsed){color:var(--ink);background:transparent;border-left-color:var(--orange)}
.accordion-button::after{content:"+";background-image:none!important;font-size:22px;font-weight:400;line-height:1;color:var(--muted);width:auto;height:auto;transform:none!important;position:absolute;right:8px;top:50%;margin-top:-11px;transition:color .2s ease}
.accordion-button:not(.collapsed)::after{content:"−";color:var(--orange)}
.accordion-body{padding:0 60px 24px 16px;color:var(--muted);font-size:15px;line-height:1.85}
.accordion-collapse{transition:height .22s ease}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--on-dark);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand .brand-text{color:var(--on-dark);font-size:20px}
.footer-brand p{color:var(--on-dark-muted);font-size:14px;margin:16px 0 0;max-width:300px}
.footer-col h3{font-size:13px;letter-spacing:.06em;color:var(--on-dark-muted);font-weight:600;margin-bottom:18px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{color:rgba(244,241,233,.8);font-size:14px}
.footer-col a:hover{color:var(--orange);text-decoration:underline}
.footer-bottom{border-top:1px solid var(--line-dark);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:rgba(244,241,233,.55);letter-spacing:.02em}
.footer-bottom .dot{opacity:.4;margin:0 8px}

/* ---------- mobile bar ---------- */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;background:var(--orange);color:#fff;font-weight:700;font-size:15px;height:56px;align-items:center;justify-content:center;padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -8px 24px -16px rgba(14,20,17,.6)}
.mobile-bar:hover{color:#fff;background:var(--orange-deep)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s cubic-bezier(.2,.7,.2,1),transform .3s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px;padding:72px 0 80px}
  .value-grid{gap:36px}
  .dl-block{padding:44px;gap:40px}
  .news-grid{gap:24px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;left:0;right:0;top:72px;bottom:0;background:var(--sand);
    flex-direction:column;align-items:stretch;gap:0;padding:18px 24px 40px;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
    overflow-y:auto;border-top:1px solid var(--line);
  }
  body.nav-open .site-nav{opacity:1;visibility:visible;transform:none}
  .nav-link{height:48px;display:flex;align-items:center;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--orange)}
  .nav-cta{margin:20px 0 0;width:100%}
  .hero-grid{grid-template-columns:1fr;padding:56px 0 64px;gap:44px}
  .hero-visual{min-height:320px}
  .hero-watermark{font-size:80px;bottom:-8px}
  .value-grid{grid-template-columns:1fr}
  .value-aside{position:static;max-width:360px}
  .value-aside img{aspect-ratio:16/10}
  .value-item:nth-child(2),.value-item:nth-child(3){padding-left:0}
  .req-grid{grid-template-columns:1fr}
  .review-wall{column-count:2}
  .news-grid{grid-template-columns:1fr}
  .dl-block{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section-head{margin-bottom:36px}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  .header-inner{height:60px}
  .site-nav{top:60px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  body{font-size:15.5px;line-height:1.85}
  .hero h1{font-size:clamp(1.75rem,7vw,2.4rem)}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn-main,.hero-actions .btn-ghost-light{width:100%}
  .hero-stats li{padding:0 16px}
  .stat-num{font-size:22px}
  .hero-visual{min-height:260px}
  .hero-shot{left:16px;top:20px;width:calc(100% - 32px);height:calc(100% - 40px)}
  .value-item{grid-template-columns:1fr;gap:10px;padding:26px 0}
  .value-num{font-size:40px}
  .review-wall{column-count:1;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:8px;-webkit-overflow-scrolling:touch}
  .review-card{flex:0 0 82%;margin-bottom:0;scroll-snap-align:start}
  .dl-grid{grid-template-columns:1fr}
  .dl-block{padding:32px 22px}
  .qr-box{width:104px;height:104px}
  .accordion-body{padding-right:16px}
  .footer-grid{grid-template-columns:1fr}
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
  .shot-carousel .carousel-inner{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;padding-bottom:6px}
  .shot-carousel .carousel-item{display:block!important;flex:0 0 88%;scroll-snap-align:start;transition:none!important;transform:none!important}
  .shot-controls .carousel-arrow,.shot-progress{display:none}
  .shot-controls{margin-top:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0E1411;
  --sand:#F4F1E9;
  --card:#FFFFFF;
  --orange:#F0552A;
  --orange-deep:#D8441C;
  --green:#1B6B4F;
  --text:#202824;
  --muted:#6B746E;
  --line:rgba(14,20,17,.10);
  --line-strong:rgba(14,20,17,.18);
  --line-dark:rgba(244,241,233,.14);
  --paper-dark-text:#F4F1E9;
  --shadow-1:0 1px 2px rgba(14,20,17,.06),0 8px 24px -12px rgba(14,20,17,.18);
  --shadow-2:0 2px 6px rgba(14,20,17,.08),0 18px 38px -18px rgba(14,20,17,.26);
  --r-card:10px;
  --r-btn:4px;
  --r-pill:999px;
  --container:1240px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Helvetica,Arial,sans-serif;
  --font-num:"Barlow Condensed","Arial Narrow",Impact,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--sand);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-card)}
a{color:var(--green);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--orange)}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.25em}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.3}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
::selection{background:rgba(240,85,42,.18)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;background:var(--sand);
  border-bottom:1px solid transparent;transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(14,20,17,.06),0 10px 26px -20px rgba(14,20,17,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.02em}
.brand:hover{color:var(--ink)}
.brand-mark{width:14px;height:26px;background:var(--orange);border-radius:3px;display:inline-block;position:relative;flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;left:3px;top:3px;width:8px;height:8px;background:rgba(255,255,255,.85);border-radius:2px}
.brand-text{font-size:19px;line-height:1}
.site-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--orange);
  transform:scaleX(0);transform-origin:left center;transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink);font-weight:700}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:800}
.nav-cta{margin-left:4px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:transparent;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-line-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:700;letter-spacing:.01em;
  padding:12px 22px;font-size:15px;line-height:1.2;border:1.5px solid transparent;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  cursor:pointer;text-align:center;
}
.btn-main{background:var(--orange);color:#fff;border-color:var(--orange);box-shadow:0 6px 16px -10px rgba(240,85,42,.9)}
.btn-main:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 22px -14px rgba(240,85,42,.95)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--sand);border-color:var(--ink);transform:translateY(-1px)}
.btn-line-light{background:transparent;color:var(--paper-dark-text);border-color:rgba(244,241,233,.55)}
.btn-line-light:hover{background:var(--paper-dark-text);color:var(--ink);border-color:var(--paper-dark-text);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ---------- page head ---------- */
.page-open{padding:32px 0 0}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--muted);margin-bottom:26px}
.breadcrumb-nav a{color:var(--muted);border-bottom:1px solid transparent}
.breadcrumb-nav a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.breadcrumb-nav .sep{opacity:.5}
.breadcrumb-nav .current{color:var(--text);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{max-width:880px;padding-bottom:34px;border-bottom:1px solid var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;color:var(--orange);font-weight:700;text-transform:uppercase;margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);display:inline-block}
.article-title{
  font-size:clamp(1.55rem,3.1vw,2.15rem);line-height:1.35;letter-spacing:-.02em;
  color:var(--ink);margin-bottom:20px;word-break:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:14px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);display:inline-block}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  background:rgba(27,107,79,.10);color:var(--green);border:1px solid rgba(27,107,79,.18);
}
.pill-orange{background:rgba(240,85,42,.10);color:var(--orange-deep);border-color:rgba(240,85,42,.22)}

/* ---------- article layout ---------- */
.article-shell{padding:44px 0 8px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:56px;align-items:start;max-width:1060px}
.article-main{max-width:760px;width:100%}

.mobile-toc{display:none;margin-bottom:24px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);box-shadow:var(--shadow-1)}
.mobile-toc summary{
  list-style:none;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.mobile-toc summary::-webkit-details-marker{display:none}
.mobile-toc summary::after{content:"+";font-size:18px;color:var(--orange);font-weight:700}
.mobile-toc[open] summary::after{content:"−"}
.mobile-toc .toc-list{padding:0 18px 16px}

.article-body{font-size:16px;line-height:1.9;color:var(--text)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin-bottom:1.1em}
.article-body h2{
  position:relative;font-size:28px;line-height:1.35;margin:2.1em 0 .8em;padding-left:34px;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.66em;width:24px;height:3px;border-radius:2px;background:var(--orange);
}
.article-body h3{font-size:20px;margin:1.8em 0 .6em;scroll-margin-top:96px}
.article-body h4{font-size:17px;margin:1.5em 0 .5em}
.article-body a{color:var(--green);border-bottom:1px solid rgba(27,107,79,.35)}
.article-body a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.article-body ul,.article-body ol{padding-left:1.3em;margin-bottom:1.2em}
.article-body li{line-height:1.8;margin-bottom:.45em}
.article-body li::marker{color:var(--orange)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--orange);
  background:rgba(240,85,42,.055);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:10px;margin:1.6em auto;max-width:100%;height:auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:1.8em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px;letter-spacing:.02em}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;background:var(--card);border-radius:var(--r-card);overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:rgba(27,107,79,.07);font-weight:700;color:var(--ink)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{background:rgba(14,20,17,.06);padding:2px 6px;border-radius:4px;font-size:.9em}

/* ---------- toc ---------- */
.toc-panel{position:sticky;top:96px;align-self:start}
.toc-title{font-size:12.5px;letter-spacing:.16em;color:var(--muted);font-weight:700;margin-bottom:14px;text-transform:uppercase}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:7px 0 7px 16px;margin-left:-1px;border-left:2px solid transparent;
  font-size:13.5px;line-height:1.5;color:var(--muted);
  transition:color .18s ease,border-color .18s ease,padding-left .18s ease;
}
.toc-list a:hover{color:var(--ink);border-left-color:var(--line-strong)}
.toc-list a.is-current{color:var(--orange-deep);font-weight:700;border-left-color:var(--orange);padding-left:18px}
.toc-list .toc-lv3 a{padding-left:28px;font-size:13px}
.toc-empty{font-size:13px;color:var(--muted);padding-left:16px}

/* ---------- article footer ---------- */
.article-foot{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:26px}
.tag-row .label{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:700;margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:var(--card);font-size:13px;color:var(--text);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.tag:hover{border-color:var(--orange);color:var(--orange-deep);transform:translateY(-1px)}

.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:34px}
.share-row .label{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:700}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:transparent;color:var(--text);font-size:13.5px;font-weight:600;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.share-btn:hover{background:var(--ink);color:var(--sand);border-color:var(--ink)}
.share-btn i{font-size:13px}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:44px}
.post-nav-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(240,85,42,.35)}
.post-nav-card .kicker{display:block;font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:700;margin-bottom:8px}
.post-nav-card .t{display:block;font-size:16px;font-weight:800;color:var(--ink);line-height:1.45}
.post-nav-card:hover .t{color:var(--orange-deep)}
.post-nav-card.next{text-align:right}
.post-nav-card.next .kicker{justify-content:flex-end}
.post-nav-card .arrow{font-size:12px;color:var(--orange);margin-left:6px}

/* ---------- related ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:26px}
.section-head .more{font-size:14px;font-weight:700;color:var(--green);white-space:nowrap;border-bottom:1px solid transparent}
.section-head .more:hover{color:var(--orange);border-bottom-color:var(--orange)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(240,85,42,.28)}
.news-thumb{position:relative;overflow:hidden;aspect-ratio:4/3;background:#E7E3D8}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1}
.news-body h3{font-size:16.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--ink)}
.news-body h3 a:hover{color:var(--orange-deep)}
.news-body p{
  font-size:14px;line-height:1.7;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.news-foot .go{color:var(--orange);font-weight:700}

/* ---------- download strip ---------- */
.dl-strip{background:var(--ink);border-radius:14px;padding:40px;color:var(--paper-dark-text);margin:56px 0 0}
.dl-strip-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center}
.dl-strip h2{color:var(--paper-dark-text);font-size:26px;margin-bottom:12px}
.dl-strip p{color:rgba(244,241,233,.75);font-size:15px;margin-bottom:0;max-width:520px}
.dl-strip-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.dl-strip .btn-main{min-width:160px}

/* ---------- back link ---------- */
.back-row{display:flex;justify-content:center;padding:38px 0 0}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;color:var(--ink)}
.back-link:hover{color:var(--orange)}
.back-link i{font-size:12px;color:var(--orange)}

/* ---------- empty state ---------- */
.article-empty{
  background:var(--card);border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:48px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.article-empty .icon{
  width:56px;height:56px;border-radius:14px;background:rgba(240,85,42,.10);color:var(--orange);
  display:inline-flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px;
}
.article-empty h2{font-size:22px;margin-bottom:10px}
.article-empty p{color:var(--muted);font-size:15px;max-width:420px;margin:0 auto 22px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper-dark-text);margin-top:88px;padding:64px 0 0}
.site-footer .brand{color:var(--paper-dark-text)}
.site-footer .brand:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand p{color:rgba(244,241,233,.72);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:330px}
.footer-col h3{font-size:13px;letter-spacing:.16em;color:rgba(244,241,233,.62);font-weight:700;margin-bottom:16px;text-transform:uppercase}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(244,241,233,.82);line-height:1.6}
.footer-col a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12px;color:rgba(244,241,233,.58);line-height:1.7;
}
.footer-bottom .dot{margin:0 8px;opacity:.5}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s cubic-bezier(.2,.7,.2,1),transform .3s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr);max-width:820px}
  .toc-panel{display:none}
  .mobile-toc{display:block}
}
@media (max-width:991.98px){
  .header-inner{height:64px}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;
    background:var(--sand);border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
    padding:8px 18px 20px;display:none;
  }
  .site-nav.is-open{display:flex}
  .nav-link{height:48px;display:flex;align-items:center;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--orange-deep)}
  .nav-cta{margin:16px 0 0;width:100%}
  .nav-toggle{display:flex}
  .related-grid{grid-template-columns:1fr 1fr}
  .dl-strip-inner{grid-template-columns:1fr}
  .dl-strip-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .container{padding:0 18px}
  .page-open{padding-top:22px}
  .article-shell{padding-top:32px}
  .article-title{font-size:1.5rem}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:23px;padding-left:28px}
  .article-body h2::before{width:18px}
  .article-body h3{font-size:18.5px}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.next{text-align:left}
  .related-grid{grid-template-columns:1fr}
  .dl-strip{padding:28px 22px;border-radius:12px}
  .dl-strip h2{font-size:22px}
  .dl-strip-actions .btn-main,.dl-strip-actions .btn-line-light{width:100%}
  .site-footer{padding-top:48px;margin-top:64px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:575.98px){
  .article-meta{font-size:13px;gap:8px 10px}
  .breadcrumb-nav .current{white-space:normal}
  .news-body{padding:16px 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0E1411;
  --sand:#F4F1E9;
  --sand-2:#EDE9DE;
  --card:#FFFFFF;
  --orange:#F0552A;
  --orange-dark:#D8451C;
  --green:#1B6B4F;
  --text:#202824;
  --muted:#6B746E;
  --line:rgba(14,20,17,.10);
  --line-strong:rgba(14,20,17,.16);
  --line-dark:rgba(244,241,233,.14);
  --radius:10px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(14,20,17,.06),0 8px 24px -12px rgba(14,20,17,.18);
  --shadow-2:0 2px 4px rgba(14,20,17,.06),0 16px 36px -16px rgba(14,20,17,.24);
  --ff-base:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --ff-num:"Barlow Condensed","Arial Narrow",Impact,Arial,sans-serif;
  --t:.24s cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff-base);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--t);}
a:hover{color:var(--orange);}
img{display:block;max-width:100%;height:auto;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;letter-spacing:-.02em;line-height:1.3;color:var(--ink);}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:62ch;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600;}
.eyebrow .dash{display:inline-block;width:26px;height:2px;background:var(--orange);border-radius:2px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--sand);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t),border-color var(--t),background var(--t);
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(14,20,17,.04),0 10px 28px -22px rgba(14,20,17,.5);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{width:22px;height:22px;border-radius:5px;background:var(--orange);position:relative;flex:none;}
.brand-mark::after{content:"";position:absolute;left:5px;top:5px;width:12px;height:12px;border-radius:2px;border:2px solid rgba(255,255,255,.92);}
.brand-text{white-space:nowrap;}
.site-nav{display:flex;align-items:center;gap:32px;}
.nav-link{position:relative;font-size:15px;color:#3A443E;padding:6px 0;font-weight:500;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .2s cubic-bezier(.2,.7,.2,1);}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.nav-cta::after{display:none;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);background:transparent;border-radius:var(--radius-btn);flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-main{background:var(--orange);color:#fff;}
.btn-main:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--sand);}
.btn-line{background:transparent;color:var(--sand);border:1.5px solid rgba(244,241,233,.55);}
.btn-line:hover{background:var(--sand);color:var(--ink);border-color:var(--sand);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ---------- breadcrumb ---------- */
.crumb{padding:26px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(14,20,17,.28);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--orange);}
.crumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:28px 0 72px;}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(14,20,17,.045) 1px,transparent 1px);
  background-size:80px 100%;
  opacity:.5;
  mask-image:linear-gradient(to bottom,transparent,#000 30%,#000 70%,transparent);
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 30%,#000 70%,transparent);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.hero-copy h1{
  margin:16px 0 0;
  font-size:clamp(1.9rem,4vw,2.9rem);
  font-weight:800;letter-spacing:-.02em;line-height:1.24;color:var(--ink);
}
.hero-lead{margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--muted);max-width:52ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-metrics{display:flex;flex-wrap:wrap;align-items:stretch;gap:0;margin-top:34px;}
.metric{padding:0 26px;border-left:1px solid var(--line);}
.metric:first-child{padding-left:0;border-left:none;}
.metric-k{display:block;font-size:12.5px;letter-spacing:.06em;color:var(--muted);}
.metric-v{display:block;margin-top:4px;font-family:var(--ff-num);font-size:22px;font-weight:700;letter-spacing:.01em;color:var(--ink);}
.hero-figure{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--sand-2);box-shadow:var(--shadow-1);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure:hover img{transform:scale(1.03);}
.hero-figure img{transition:transform .5s cubic-bezier(.2,.7,.2,1);}

/* ---------- main layout ---------- */
.main-section{padding:8px 0 96px;}
.layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:56px;align-items:start;}
.content-col{min-width:0;}
.rows-head{margin-bottom:8px;}
.rows-head h2{font-size:clamp(1.4rem,2.2vw,1.85rem);font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.35;}
.rows-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:60ch;}

.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  padding:44px 0;
  border-top:1px solid var(--line);
}
.alt-row:first-of-type{border-top:none;}
.alt-row.reverse .alt-text{order:2;}
.alt-row.reverse .alt-media{order:1;}
.alt-index{
  font-family:var(--ff-num);font-size:46px;line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(240,85,42,.55);
  letter-spacing:.02em;display:block;margin-bottom:10px;
}
.alt-text h3{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--ink);line-height:1.4;}
.alt-text p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--muted);}
.alt-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--sand-2);}
.alt-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1);}
.alt-media:hover img{transform:scale(1.03);}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.chip{display:inline-block;font-size:12.5px;line-height:1.6;padding:4px 11px;border-radius:999px;background:#EDF3EF;color:var(--green);border:1px solid rgba(27,107,79,.18);}
.alt-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;font-weight:600;color:var(--green);}
.alt-link::after{content:"→";transition:transform var(--t);}
.alt-link:hover{color:var(--orange);}
.alt-link:hover::after{transform:translateX(3px);}

/* ---------- sticky download card ---------- */
.dl-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
}
.dl-card h2{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.dl-card .dl-tip{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.7;}
.dl-list{margin-top:18px;border-top:1px solid var(--line);}
.dl-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);}
.dl-list .name{font-size:14.5px;font-weight:600;color:var(--ink);}
.dl-list .meta{font-family:var(--ff-num);font-size:13px;letter-spacing:.04em;color:var(--muted);}
.dl-card .btn-main{width:100%;margin-top:20px;}
.dl-card .btn-ghost{width:100%;margin-top:10px;height:42px;font-size:14px;}
.dl-note{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line-strong);font-size:12.5px;line-height:1.8;color:var(--muted);}
.dl-note strong{color:var(--ink);font-weight:700;}

/* ---------- recommend cards ---------- */
.recommend{padding:0 0 96px;}
.read-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);transition:transform var(--t),box-shadow var(--t);display:flex;flex-direction:column;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-media{display:block;overflow:hidden;background:var(--sand-2);}
.news-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:16.5px;font-weight:800;line-height:1.45;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a:hover{color:var(--orange);}
.news-body p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);}
.news-meta .tag{display:inline-block;padding:2px 10px;border-radius:999px;background:#EDF3EF;color:var(--green);border:1px solid rgba(27,107,79,.18);font-size:12px;}
.news-meta time{font-family:var(--ff-num);letter-spacing:.04em;}
.news-meta .arrow{margin-left:auto;color:var(--orange);font-weight:700;transition:transform var(--t);}
.news-card:hover .news-meta .arrow{transform:translateX(3px);}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:var(--sand);padding:80px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center;}
.cta-copy h2{font-size:clamp(1.5rem,2.6vw,2.05rem);font-weight:800;letter-spacing:-.02em;line-height:1.32;color:var(--sand);}
.cta-copy p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(244,241,233,.72);max-width:46ch;}
.qr-row{display:flex;align-items:center;gap:16px;margin-top:28px;}
.qr-box{width:120px;height:120px;border-radius:10px;background:#fff;flex:none;display:grid;place-items:center;position:relative;overflow:hidden;}
.qr-box::before{content:"";width:88px;height:88px;background:repeating-conic-gradient(var(--ink) 0% 25%,#fff 0% 50%) 0 0/11px 11px;border-radius:2px;opacity:.92;}
.qr-box::after{content:"";position:absolute;inset:26px;border-radius:4px;background:#fff;border:2px solid var(--ink);}
.qr-cap{font-size:13px;line-height:1.7;color:rgba(244,241,233,.66);max-width:16ch;}
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.dl-btn{
  display:flex;flex-direction:column;justify-content:center;gap:4px;
  min-height:78px;padding:14px 18px;border-radius:var(--radius);
  border:1px solid rgba(244,241,233,.28);background:rgba(244,241,233,.04);
  transition:background var(--t),border-color var(--t),transform var(--t),color var(--t);
}
.dl-btn:hover{background:rgba(244,241,233,.1);border-color:rgba(244,241,233,.5);color:var(--sand);transform:translateY(-2px);}
.dl-btn .dl-name{font-size:16px;font-weight:600;color:var(--sand);line-height:1.4;}
.dl-btn .dl-sub{font-family:var(--ff-num);font-size:12px;letter-spacing:.05em;color:rgba(244,241,233,.6);}
.dl-btn.primary{background:var(--orange);border-color:var(--orange);}
.dl-btn.primary .dl-name{color:#fff;}
.dl-btn.primary .dl-sub{color:rgba(255,255,255,.85);}
.dl-btn.primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);}
.cta-foot{margin-top:26px;font-family:var(--ff-num);font-size:12.5px;letter-spacing:.06em;color:rgba(244,241,233,.45);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(244,241,233,.8);padding-top:4px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:40px;padding:64px 0 44px;}
.site-footer .brand{color:var(--sand);}
.site-footer .brand:hover{color:var(--sand);}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.85;color:rgba(244,241,233,.6);max-width:34ch;}
.footer-col h3{font-size:13px;letter-spacing:.06em;font-weight:700;color:rgba(244,241,233,.55);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(244,241,233,.8);line-height:1.7;}
.footer-col a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0 34px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12px;color:rgba(244,241,233,.5);line-height:1.7;
}
.footer-bottom .dot{margin:0 8px;opacity:.45;}

/* ---------- reveal motion ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .3s cubic-bezier(.2,.7,.2,1),transform .3s cubic-bezier(.2,.7,.2,1);}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:40px;}
  .layout{gap:40px;}
  .alt-row{gap:32px;}
}
@media (max-width:991.98px){
  .header-inner{height:60px;}
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    background:var(--sand);
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    padding:20px 24px 40px;
    border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    overflow-y:auto;
  }
  .site-nav.open{transform:none;opacity:1;visibility:visible;pointer-events:auto;}
  .nav-link{font-size:16px;height:48px;display:flex;align-items:center;padding:0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--orange);}
  .site-nav .nav-cta{margin-top:20px;height:46px;padding:0 22px;font-size:15px;border-bottom:none;color:#fff;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:-1;}
  .hero-figure img{aspect-ratio:16/10;}
  .layout{grid-template-columns:1fr;gap:40px;}
  .dl-card{position:static;order:2;}
  .content-col{order:1;}
  .read-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px;}
  .main-section{padding-bottom:72px;}
  .recommend{padding-bottom:72px;}
  .page-hero{padding-bottom:56px;}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px;}
  .alt-row{grid-template-columns:1fr;gap:22px;padding:34px 0;}
  .alt-row.reverse .alt-text{order:1;}
  .alt-row.reverse .alt-media{order:2;}
  .hero-metrics{gap:0;margin-top:28px;}
  .metric{padding:0 18px;}
  .metric-v{font-size:20px;}
  .read-grid{grid-template-columns:1fr;}
  .dl-grid{grid-template-columns:1fr;}
  .cta-band{padding:60px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;font-size:11.5px;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;line-height:1.85;}
  .container{padding-left:18px;padding-right:18px;}
  .brand{font-size:17px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{flex:1 1 100%;}
  .metric{padding:0 14px;}
  .metric:first-child{padding-left:0;}
  .qr-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .qr-cap{max-width:none;}
  .dl-card{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category2 */
:root{
  --ink:#0E1411;
  --sand:#F4F1E9;
  --surface:#FFFFFF;
  --orange:#F0552A;
  --orange-dark:#D9451D;
  --green:#1B6B4F;
  --text:#202824;
  --muted:#6B746E;
  --light:#F4F1E9;
  --line:rgba(14,20,17,.10);
  --line-strong:rgba(14,20,17,.18);
  --line-dark:rgba(244,241,233,.14);
  --r-card:10px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(14,20,17,.06),0 8px 24px -12px rgba(14,20,17,.18);
  --shadow-2:0 2px 4px rgba(14,20,17,.08),0 18px 40px -18px rgba(14,20,17,.26);
  --container:1240px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","Arial Narrow",Impact,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);background:var(--sand);color:var(--text);
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
@media (max-width:767.98px){body{font-size:15.5px;line-height:1.85}}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--orange)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.25}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
@media (max-width:767.98px){.container{padding-left:18px;padding-right:18px}}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-light-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  text-decoration:none;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-main{background:var(--orange);border-color:var(--orange);color:#fff}
.btn-main:hover,.btn-main:focus{background:var(--orange-dark);border-color:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(240,85,42,.9)}
.btn-ghost{background:transparent;border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:var(--light);border-color:var(--ink);transform:translateY(-1px)}
.btn-light-outline{background:transparent;border:1.5px solid rgba(244,241,233,.55);color:var(--light)}
.btn-light-outline:hover,.btn-light-outline:focus{background:rgba(244,241,233,.12);border-color:var(--light);color:#fff;transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;background:var(--sand);
  border-bottom:1px solid transparent;transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 8px 20px -18px rgba(14,20,17,.55)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{width:12px;height:26px;border-radius:2px;background:var(--orange);display:inline-block}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.site-nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--text);text-decoration:none;white-space:nowrap;transition:color .18s ease}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--orange);transition:width .2s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{width:100%}
.nav-cta{margin-left:8px}
.nav-cta::after{display:none}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:var(--r-btn);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;margin-left:auto}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
@media (max-width:991.98px){
  .header-inner{height:60px;gap:12px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;left:0;right:0;top:60px;bottom:0;z-index:999;margin-left:0;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    background:var(--sand);padding:12px 18px calc(32px + env(safe-area-inset-bottom));
    border-top:1px solid var(--line);overflow-y:auto;
    transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.7,.2,1);
  }
  .site-nav.is-open{transform:translateX(0)}
  .nav-link{display:flex;align-items:center;height:48px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--orange);font-weight:700}
  .nav-cta{margin:18px 0 0;height:48px}
}

/* ---------- breadcrumb ---------- */
.crumbs{padding:22px 0 0;font-size:13px;letter-spacing:.02em;color:var(--muted)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line-strong)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--orange)}
.crumbs .current{color:var(--ink);font-weight:600}

/* ---------- category hero ---------- */
.cat-hero{position:relative;padding:34px 0 76px;overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  opacity:.5;
  mask-image:radial-gradient(120% 90% at 20% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 20% 0%,#000 0%,transparent 78%);
}
.cat-hero .container{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;font-weight:600;color:var(--muted);text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);display:inline-block}
.cat-hero h1{font-size:clamp(2rem,4.6vw,3.15rem);line-height:1.12;margin:16px 0 18px;letter-spacing:-.03em}
.cat-lead{max-width:30em;color:var(--muted);font-size:16.5px;line-height:1.85;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);letter-spacing:.02em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:#E7E3D8;aspect-ratio:4/3.2}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure figcaption{position:absolute;left:14px;bottom:14px;background:rgba(14,20,17,.82);color:var(--light);font-size:12px;letter-spacing:.08em;padding:6px 12px;border-radius:999px}
@media (max-width:991.98px){.cat-hero{padding:24px 0 56px}.hero-figure{margin-top:32px;aspect-ratio:16/10}}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2rem)}
.sec-head .sec-sub{margin:8px 0 0;color:var(--muted);font-size:15px;max-width:34em}
.sec-link{font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-link::after{content:"→";transition:transform .18s ease}
.sec-link:hover{color:var(--orange)}
.sec-link:hover::after{transform:translateX(3px)}

/* ---------- main body ---------- */
.cat-main{padding:64px 0 0}
@media (max-width:767.98px){.cat-main{padding:44px 0 0}}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:52px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:16px;top:10px;bottom:26px;width:1px;background:var(--line-strong)}
.tl-item{position:relative;padding-bottom:38px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:-52px;top:0;width:32px;height:32px;border-radius:50%;
  background:#fff;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em;
  transition:border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.tl-item:hover .tl-num{border-color:var(--orange);color:var(--orange);box-shadow:0 0 0 4px rgba(240,85,42,.08)}
.tl-item h3{font-size:19px;margin-bottom:8px;line-height:1.4}
.tl-item p{color:var(--muted);font-size:15.5px;margin-bottom:12px;max-width:38em}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px}
.pill{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:12.5px;letter-spacing:.03em;background:rgba(27,107,79,.08);color:var(--green);border:1px solid rgba(27,107,79,.16)}
.pill-orange{background:rgba(240,85,42,.08);color:var(--orange-dark);border-color:rgba(240,85,42,.2)}

/* ---------- scope list ---------- */
.scope-block{margin-top:52px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 26px 8px;box-shadow:var(--shadow-1)}
.scope-block h3{font-size:19px;margin-bottom:6px}
.scope-block .scope-note{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.scope-list li{display:grid;grid-template-columns:150px 1fr;gap:18px;padding:16px 0;border-top:1px solid var(--line)}
.scope-list li span{font-weight:700;font-size:14.5px;color:var(--ink)}
.scope-list li p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.75}
@media (max-width:575.98px){
  .timeline{padding-left:44px}
  .tl-num{left:-44px;width:28px;height:28px;font-size:13px}
  .timeline::before{left:14px}
  .scope-list li{grid-template-columns:1fr;gap:6px}
  .scope-block{padding:20px 18px 4px}
}

/* ---------- sticky download card ---------- */
.dl-card{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);transition:box-shadow .22s ease}
.dl-card:hover{box-shadow:var(--shadow-2)}
.dl-card h3{font-size:19px;margin-bottom:6px}
.dl-card .dl-note{font-size:14px;color:var(--muted);margin-bottom:18px}
.dl-list{border-top:1px solid var(--line);margin-bottom:20px}
.dl-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
.dl-list .dl-name{font-size:14.5px;font-weight:600;color:var(--ink)}
.dl-list .dl-size{display:block;font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.02em}
.dl-get{font-size:13px;font-weight:600;color:var(--green);white-space:nowrap}
.dl-get:hover{color:var(--orange)}
.dl-tip{font-size:12.5px;color:var(--muted);line-height:1.7;margin:14px 0 0}
@media (max-width:991.98px){.dl-card{position:static;margin-top:44px}}

/* ---------- reading cards ---------- */
.read-more{padding:76px 0 0}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;height:100%;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.news-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E7E3D8}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-media img{transform:scale(1.03)}
.news-body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;line-height:1.45;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.news-foot .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong)}
.news-foot .cat{color:var(--green);font-weight:600}

/* ---------- tail CTA ---------- */
.tail-cta{margin-top:84px}
.tail-cta-inner{background:var(--ink);color:var(--light);border-radius:var(--r-card);padding:48px;display:grid;grid-template-columns:1.5fr .9fr;gap:36px;align-items:center}
.tail-cta-inner h2{color:var(--light);font-size:clamp(1.5rem,2.8vw,2.05rem);margin-bottom:12px}
.tail-cta-inner p{color:rgba(244,241,233,.72);font-size:15px;margin:0;max-width:32em}
.tail-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
@media (max-width:991.98px){
  .tail-cta-inner{grid-template-columns:1fr;padding:34px 24px;gap:24px}
  .tail-actions{justify-content:flex-start}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(244,241,233,.8);padding:64px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.15fr;gap:40px}
.footer-brand .brand-text{color:var(--light)}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.8;color:rgba(244,241,233,.68);max-width:26em}
.footer-col h3{font-size:13px;letter-spacing:.12em;font-weight:700;color:rgba(244,241,233,.55);margin-bottom:16px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:rgba(244,241,233,.8);text-decoration:none;transition:color .18s ease}
.footer-col ul li a:hover{color:var(--orange);text-decoration:underline}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;margin-top:48px;padding:20px 0 26px;border-top:1px solid var(--line-dark);font-size:12px;color:rgba(244,241,233,.55);letter-spacing:.02em}
.footer-bottom .dot{margin:0 8px;opacity:.6}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:72px;padding-top:48px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* ---------- motion ---------- */
.fade-up{animation:fadeUp .5s cubic-bezier(.2,.7,.2,1) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .news-card:hover,{transform:none !important}
}

/* roulang page: category3 */
:root{
  --ink:#0E1411;
  --ink-soft:#202824;
  --muted:#6B746E;
  --paper:#F4F1E9;
  --card:#FFFFFF;
  --orange:#F0552A;
  --green:#1B6B4F;
  --line:rgba(14,20,17,.10);
  --line-strong:rgba(14,20,17,.18);
  --line-dark:rgba(244,241,233,.14);
  --paper-ink:#F4F1E9;
  --radius:10px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(14,20,17,.06), 0 8px 24px -12px rgba(14,20,17,.18);
  --shadow-2:0 2px 4px rgba(14,20,17,.08), 0 18px 44px -18px rgba(14,20,17,.26);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --num:"Barlow Condensed",Impact,"Arial Narrow",Arial,sans-serif;
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--green);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.25;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(244,241,233,.96);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.site-header.is-scrolled{
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(14,20,17,.05),0 10px 26px -20px rgba(14,20,17,.35);
  background:rgba(244,241,233,.99);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:12px;height:28px;border-radius:3px;
  background:linear-gradient(180deg,var(--orange) 0%,#D8431C 100%);
  display:inline-block;
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.site-nav{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink);font-weight:700;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:800;}
.nav-link.active::after{transform:scaleX(1);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--orange);color:#fff;border:1.5px solid var(--orange);
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:11px 22px;line-height:1.2;cursor:pointer;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-main:hover{background:#DE471F;border-color:#DE471F;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(240,85,42,.7);}
.btn-main:active{transform:translateY(0);}
.nav-cta{margin-left:8px;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);border:1.5px solid var(--ink);
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:11px 22px;line-height:1.2;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:var(--paper);border:1.5px solid rgba(244,241,233,.55);
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:11px 22px;line-height:1.2;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-ghost-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);
  background:transparent;border-radius:var(--radius-btn);padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);letter-spacing:.02em;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line-strong);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--orange);}
.crumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{padding:36px 0 64px;}
.cat-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--green);font-weight:700;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);display:inline-block;}
.cat-hero h1{
  font-size:clamp(2rem,4.2vw,3.1rem);
  line-height:1.18;margin-bottom:18px;
}
.cat-hero h1 .hl{
  display:inline-block;
  background:linear-gradient(180deg,transparent 62%,rgba(240,85,42,.22) 62%);
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:36em;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(27,107,79,.10);color:var(--green);border:1px solid rgba(27,107,79,.16);
}
.pill-orange{background:rgba(240,85,42,.10);color:#C8411C;border-color:rgba(240,85,42,.20);}
.hero-media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:#E7E3D8;
  box-shadow:var(--shadow-1);aspect-ratio:5/4;
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.hero-media:hover img{transform:scale(1.03);}
.hero-media::after{
  content:"v3.4";position:absolute;right:14px;bottom:2px;
  font-family:var(--num);font-size:64px;line-height:1;
  color:rgba(244,241,233,.42);letter-spacing:.02em;pointer-events:none;
}

/* ---------- layout ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.sec-head{margin-bottom:34px;max-width:44em;}
.sec-head h2{font-size:clamp(1.5rem,2.4vw,1.95rem);margin-bottom:12px;}
.sec-head p{color:var(--muted);margin:0;font-size:15.5px;}
.layout-8-4{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start;}
.content-col{min-width:0;}
.content-col>*+*{margin-top:28px;}

/* ---------- panels ---------- */
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow-1);
}
.panel h3{font-size:20px;margin-bottom:10px;}
.panel p{font-size:15px;color:var(--muted);margin-bottom:0;}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.panel-num{
  font-family:var(--num);font-size:26px;color:transparent;
  -webkit-text-stroke:1px rgba(14,20,17,.35);line-height:1;
}
.panel-head h3{margin:0;}

/* ---------- compare dual column ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px;}
.compare-col{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:var(--paper);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.compare-col:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:var(--line-strong);}
.compare-col.is-dark{background:var(--ink);border-color:var(--ink);}
.compare-col.is-dark h4,.compare-col.is-dark strong{color:var(--paper);}
.compare-col.is-dark p{color:rgba(244,241,233,.72);}
.compare-col.is-dark .tagline{color:var(--orange);}
.compare-col h4{font-size:17px;margin-bottom:6px;}
.tagline{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--green);font-weight:700;margin-bottom:14px;display:block;}
.compare-col p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.compare-list li{
  position:relative;padding-left:22px;font-size:14.5px;line-height:1.9;
  color:var(--ink-soft);
}
.compare-col.is-dark .compare-list li{color:rgba(244,241,233,.82);}
.compare-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;
  border-radius:2px;background:var(--orange);
}
.compare-col.is-dark .compare-list li::before{background:var(--orange);}
.compare-list li+li{margin-top:4px;}

/* ---------- matrix rows ---------- */
.matrix{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--card);}
.matrix-row{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px;padding:16px 20px;align-items:center;font-size:14.5px;}
.matrix-row+.matrix-row{border-top:1px solid var(--line);}
.matrix-row.head{background:rgba(14,20,17,.035);font-weight:700;color:var(--ink);font-size:13px;letter-spacing:.06em;}
.matrix-row .cell-name{font-weight:600;color:var(--ink);min-width:0;}
.matrix-row .cell-val{color:var(--muted);display:flex;align-items:center;gap:8px;}
.dot-ok{width:8px;height:8px;border-radius:50%;background:var(--green);flex:0 0 auto;}
.dot-part{width:8px;height:8px;border-radius:50%;background:var(--orange);flex:0 0 auto;}
.dot-no{width:8px;height:8px;border-radius:50%;background:rgba(107,116,110,.45);flex:0 0 auto;}
.matrix-note{font-size:13px;color:var(--muted);margin-top:14px;padding-left:2px;}

/* ---------- sticky side ---------- */
.side-col{position:sticky;top:96px;}
.dl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
}
.dl-card h3{font-size:17px;margin-bottom:6px;}
.dl-card .dl-sub{font-size:13px;color:var(--muted);margin-bottom:18px;}
.dl-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-top:1px solid var(--line);font-size:14.5px;
}
.dl-list li:first-child{border-top:none;}
.dl-list .plat{font-weight:600;color:var(--ink);}
.dl-list .size{font-size:12.5px;color:var(--muted);font-family:var(--num);letter-spacing:.06em;}
.dl-card .btn-main{width:100%;margin-top:16px;}
.dl-card .btn-ghost{width:100%;margin-top:10px;}
.dl-hint{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);margin-top:24px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-btn{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  background:transparent;border:none;border-left:4px solid transparent;
  padding:20px 8px 20px 16px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;
  transition:border-color .22s ease,color .18s ease,background .22s ease;
}
.faq-btn:hover{background:rgba(14,20,17,.025);}
.faq-btn[aria-expanded="true"]{border-left-color:var(--orange);color:var(--ink);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:2px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--green);border-radius:1px;
  transition:transform .22s ease,opacity .22s ease,background .22s ease;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-btn[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-btn[aria-expanded="true"] .faq-icon::before{background:var(--orange);}
.faq-panel{
  max-height:0;overflow:hidden;
  transition:max-height .22s ease;
}
.faq-panel-inner{padding:0 8px 22px 16px;font-size:15px;line-height:1.85;color:var(--muted);max-width:44em;}

/* ---------- rec cards ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.rec-thumb{aspect-ratio:16/10;overflow:hidden;background:#E7E3D8;}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.03);}
.rec-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.rec-body h3{font-size:16.5px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-body p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--muted);}
.rec-foot .arrow{font-family:var(--num);color:var(--orange);font-weight:700;font-size:15px;letter-spacing:.04em;}
.rec-card:hover h3{color:var(--green);}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:72px 0;}
.cta-band h2{color:var(--paper);font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:12px;}
.cta-band p{color:rgba(244,241,233,.72);max-width:40em;margin-bottom:0;font-size:15.5px;}
.cta-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-foot{
  margin-top:32px;padding-top:20px;border-top:1px solid var(--line-dark);
  font-family:var(--num);font-size:12px;letter-spacing:.12em;
  color:rgba(244,241,233,.5);display:flex;flex-wrap:wrap;gap:18px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(244,241,233,.8);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;border-bottom:1px solid var(--line-dark);}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:var(--paper);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(244,241,233,.66);max-width:30em;margin:0;}
.footer-col h3{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:rgba(244,241,233,.55);font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(244,241,233,.72);}
.footer-col a{color:rgba(244,241,233,.8);font-size:14px;}
.footer-col a:hover{color:var(--orange);text-decoration:underline;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:22px;font-size:12px;color:rgba(244,241,233,.5);
}
.footer-bottom .dot{margin:0 8px;opacity:.6;}

/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:var(--ink);color:var(--paper);
  padding:10px 18px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
  border-top:1px solid var(--line-dark);
}
.mobile-bar span{font-size:13px;color:rgba(244,241,233,.8);}
.mobile-bar .btn-main{padding:9px 18px;font-size:14px;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s cubic-bezier(.2,.7,.2,1),transform .3s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .cat-hero-grid{gap:32px;}
  .layout-8-4{grid-template-columns:1fr;}
  .side-col{position:static;order:2;}
}
@media (max-width:991.98px){
  .site-nav{
    display:none;position:absolute;top:60px;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:12px 24px 24px;box-shadow:var(--shadow-1);
  }
  .site-nav.is-open{display:flex;}
  .site-nav .nav-link{height:48px;display:flex;align-items:center;font-size:16px;}
  .site-nav .nav-link::after{display:none;}
  .site-nav .nav-link.active{color:var(--orange);}
  .nav-cta{margin:12px 0 0;width:100%;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;}
  .cat-hero-grid{grid-template-columns:1fr;}
  .hero-media{aspect-ratio:16/10;order:-1;}
  .cta-grid{grid-template-columns:1fr;gap:24px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .rec-grid{grid-template-columns:1fr 1fr;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .cat-hero{padding:24px 0 40px;}
  .hero-lead{font-size:15.5px;}
  .compare-grid{grid-template-columns:1fr;}
  .matrix-row{grid-template-columns:1fr;gap:6px;padding:14px 16px;}
  .matrix-row.head{display:none;}
  .matrix-row .cell-val{font-size:13.5px;}
  .rec-grid{grid-template-columns:1fr;}
  .panel{padding:20px;}
  .faq-btn{font-size:16px;padding:18px 6px 18px 12px;}
  .cta-band{padding:52px 0 64px;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 88px;}
  .mobile-bar{display:flex;}
  .hero-media::after{font-size:46px;}
  body{font-size:15.5px;line-height:1.85;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}