/* roulang page: index */
:root{
  --c-primary:#E8462A;
  --c-primary-hover:#C93A20;
  --c-primary-press:#B23320;
  --c-primary-soft:rgba(232,70,42,.12);
  --c-primary-line:rgba(232,70,42,.30);
  --c-accent:#0FA47F;
  --bg:#F4F2ED;
  --surface:#FFFFFF;
  --ink:#0D0E10;
  --ink-2:#16181B;
  --text:#1B1D20;
  --text-2:#6B6E72;
  --text-3:#9A9DA1;
  --line:#E4E1DA;
  --r-xs:8px;
  --r-sm:10px;
  --r:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,14,16,.06);
  --sh-2:0 14px 32px -16px rgba(13,14,16,.22);
  --sec:104px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Archivo","Barlow Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sidebar-w:240px;
  --topbar-h:56px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-align:left;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-hover)}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;color:var(--ink);letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.button,.button.primary,button.button{
  background:var(--c-primary);border-radius:var(--r-sm);font-family:var(--font-sans);
}
.button:hover,button.button:hover{background:var(--c-primary-hover)}
.label{border-radius:var(--r-pill)}
::selection{background:var(--c-primary-soft);color:var(--c-primary)}

/* ---------- 布局骨架 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 20px 20px;z-index:60;
}
.brand{height:88px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--c-primary);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:5px;right:5px;top:8px;height:2px;background:#fff;
  box-shadow:0 5px 0 #fff;
}
.brand-text{font-weight:800;font-size:16px;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:18px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:var(--r-sm);color:var(--text-2);font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.nav-item:hover{background:#F7F5F1;color:var(--ink)}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.nav-short{display:none}
.side-divider{height:1px;background:var(--line);margin:20px 0}
.side-download{margin-top:auto}
.side-foot{
  margin-top:16px;font-family:var(--font-num);font-size:12px;letter-spacing:.02em;
  color:var(--text-3);line-height:1.6;
}
.site-main{margin-left:var(--sidebar-w);display:block}
.topbar{display:none}
.drawer,.drawer-mask{display:none}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .12s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff}
.btn-primary:active{background:var(--c-primary-press);transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-on-dark{background:#fff;color:var(--ink)}
.btn-on-dark:hover{background:#F4F2ED;color:var(--ink)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover span{transform:translateX(4px)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;letter-spacing:.02em;
  color:var(--c-primary);background:var(--c-primary-soft);border:1px solid var(--c-primary-line);
}
.tag-accent{color:var(--c-accent);background:rgba(15,164,127,.08);border-color:rgba(15,164,127,.32)}
.tag-quiet{color:var(--text-2);background:#F7F5F1;border-color:var(--line)}

/* ---------- 区块 ---------- */
.section{padding:var(--sec) 0}
.section-alt{background:var(--surface)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;
}
.eyebrow{
  display:block;font-family:var(--font-num);font-size:13px;font-weight:700;
  letter-spacing:.08em;color:var(--c-primary);margin-bottom:10px;
}
.section-title{font-size:clamp(24px,3vw,38px)}
.section-sub{margin-top:12px;color:var(--text-2);font-size:16px;max-width:62ch}
.num{font-family:var(--font-num);letter-spacing:.02em}

/* ---------- Hero ---------- */
.hero{
  padding:120px 0 96px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(32px,5vw,60px);font-weight:900;line-height:1.18;letter-spacing:.005em}
.hero-sub{margin-top:18px;font-size:18px;color:var(--text-2);max-width:40ch;line-height:1.75}
.hero .tag{margin-bottom:20px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.stat-row{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:48px;padding-top:32px;
  border-top:1px solid var(--line);
}
.stat-row li{display:flex;flex-direction:column;gap:4px}
.stat-num{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--ink);letter-spacing:.02em;line-height:1.2}
.stat-label{font-size:12px;color:var(--text-3);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-1);background:#E4E1DA;
}
.float-card{
  position:absolute;right:20px;bottom:-26px;min-width:210px;
  padding:16px 18px;border-radius:var(--r);
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.7);box-shadow:var(--sh-2);
}
.float-card .fc-num{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--c-primary);line-height:1.2}
.float-card .fc-label{font-size:12px;color:var(--text-2);margin-top:6px}

/* ---------- 价值说明 ---------- */
.value-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.num-list{margin-top:32px;border-top:1px solid var(--line)}
.num-list li{
  display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.num-list .num{font-size:40px;font-weight:700;color:rgba(232,70,42,.32);line-height:1.1}
.num-list h3{font-size:20px;margin-bottom:8px}
.num-list p{color:var(--text-2);font-size:15.5px;max-width:52ch}
.value-visual img{
  width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);background:#E4E1DA;
}
.value-visual{margin-top:72px}
.value-note{
  margin-top:20px;padding:16px 18px;border-radius:var(--r);
  background:var(--surface);border:1px solid var(--line);font-size:14px;color:var(--text-2);
}

/* ---------- 轮播 ---------- */
.orbit-nav{display:flex;gap:10px}
.orb-btn{
  width:40px;height:40px;border-radius:50%;background:transparent;border:1px solid var(--line);
  color:var(--ink);font-size:16px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.orb-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.orbit{position:relative;overflow:hidden;border-radius:var(--r-lg)}
.orbit-track{display:flex;transition:transform .45s cubic-bezier(.4,0,.2,1)}
.orbit-slide{
  flex:0 0 100%;margin:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
}
.orbit-slide figure{margin:0}
.orbit-slide img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;background:#E4E1DA}
.orbit-slide:hover img{transform:scale(1.03)}
.orbit-cap{padding:20px 24px;display:flex;flex-direction:column;gap:6px}
.orbit-cap strong{font-size:17px;color:var(--ink)}
.orbit-cap span{font-size:14px;color:var(--text-2)}
.orbit-dots{display:flex;gap:8px;justify-content:center;margin-top:24px}
.orbit-dot{
  width:24px;height:4px;border-radius:2px;background:var(--line);border:0;padding:0;cursor:pointer;
  transition:background .2s ease;
}
.orbit-dot.is-active{background:var(--c-primary)}
.orbit-dot:hover{background:var(--c-primary-line)}

/* ---------- 系统要求 ---------- */
.req-box{background:var(--bg);border-radius:var(--r-lg);padding:32px;border:1px solid var(--line)}
.req-box h3{font-size:18px;margin-bottom:18px}
.spec-list li{
  display:grid;grid-template-columns:130px 1fr;gap:16px;padding:12px 0;
  border-bottom:1px dashed var(--line);
}
.spec-list li:last-child{border-bottom:0}
.spec-key{font-size:13px;color:var(--text-2)}
.spec-val{font-family:var(--font-num);font-size:15px;color:var(--ink);letter-spacing:.02em}
.req-note{margin-top:24px;font-size:13.5px;color:var(--text-2)}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.review-col{display:flex;flex-direction:column;gap:24px}
.review-col.offset{margin-top:24px}
.review-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:24px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease;
}
.review-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.review-name{font-size:14px;font-weight:700;color:var(--ink)}
.review-body{font-size:15px;color:var(--text-2);line-height:1.8}
.review-stars{margin-top:14px;color:var(--c-primary);letter-spacing:.16em;font-size:14px}

/* ---------- 下载四宫格 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.dl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:24px;display:flex;flex-direction:column;gap:10px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.dl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-line)}
.dl-platform{font-size:16px;font-weight:700;color:var(--ink)}
.dl-meta{font-family:var(--font-num);font-size:13px;color:var(--text-3);letter-spacing:.02em}
.dl-card .btn{margin-top:auto;width:100%}
.qr-card{align-items:center;text-align:center}
.qr-box{
  width:120px;height:120px;border-radius:var(--r-sm);border:1px dashed var(--line);
  background:
    repeating-linear-gradient(45deg,#F4F2ED 0 6px,#EFEDE7 6px 12px);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-3);
}
.qr-note{font-size:12.5px;color:var(--text-2);line-height:1.6}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:5fr 5fr;gap:24px;align-items:start}
.news-lead{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease;
}
.news-lead:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-lead-media{display:block;overflow:hidden}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;background:#E4E1DA}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:24px;display:flex;flex-direction:column;gap:12px}
.news-lead-body h3{font-size:21px;line-height:1.4}
.news-lead-body h3 a{color:var(--ink)}
.news-lead-body h3 a:hover{color:var(--c-primary)}
.news-sum{
  font-size:14.5px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:14px;border-top:1px solid var(--line);
}
.news-meta time{font-family:var(--font-num);font-size:13px;color:var(--text-3);letter-spacing:.02em}
.news-list{display:flex;flex-direction:column;gap:12px}
.news-row{
  display:grid;grid-template-columns:96px 1fr;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:14px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.news-row:hover{border-color:var(--c-primary-line);box-shadow:var(--sh-1);transform:translateY(-2px)}
.news-row-thumb{display:block;overflow:hidden;border-radius:var(--r-xs)}
.news-row-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#E4E1DA;transition:transform .4s ease}
.news-row:hover .news-row-thumb img{transform:scale(1.04)}
.news-row-title{
  margin:8px 0 6px;font-size:15.5px;font-weight:700;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.news-row-title a{color:var(--ink)}
.news-row-title a:hover{color:var(--c-primary)}
.news-row-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-row-meta time{font-family:var(--font-num);font-size:12.5px;color:var(--text-3);letter-spacing:.02em}
.news-row-meta .arrow{color:var(--c-primary);font-weight:700}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:64px 24px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-icon{
  width:48px;height:48px;border-radius:var(--r-sm);border:1.5px solid var(--line);
  position:relative;
}
.empty-icon::after{
  content:"";position:absolute;left:9px;right:9px;top:20px;height:1.5px;background:var(--line);
  box-shadow:0 8px 0 var(--line);
}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:780px;margin:0 auto;padding:0 16px}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:16px 0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;
}
.faq-icon{
  position:relative;width:18px;height:18px;flex:0 0 auto;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:1px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a-inner{padding:0 0 20px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:64ch}
.faq-item.is-open::before{
  content:"";position:absolute;left:-16px;top:14px;bottom:14px;width:3px;
  border-radius:2px;background:var(--c-primary);
}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;opacity:.06;
}
.cta-band .container{position:relative;z-index:1}
.cta-inner{
  min-height:220px;display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;
  padding:48px 0;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,34px)}
.cta-band p{color:#B9BCBF;margin-top:12px;font-size:15.5px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-band a{color:#FF7A5C}
.cta-band a:hover{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#0D0E10;color:#B9BCBF;padding:64px 0 24px;font-size:14.5px}
.footer-brand{font-size:16px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-desc{color:#9A9DA1;line-height:1.85;max-width:34ch}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:#B9BCBF;position:relative}
.footer-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:#FF7A5C;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.footer-list a:hover{color:#FF7A5C}
.footer-list a:hover::after{transform:scaleX(1)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid #24262A;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7C8085;font-family:var(--font-num);letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 平板 ---------- */
@media (min-width:640px) and (max-width:1023px){
  :root{--sidebar-w:88px}
  .app-sidebar{padding:0 12px 16px;align-items:center}
  .brand{width:100%;justify-content:center}
  .brand-text,.label-full{display:none}
  .nav-short{display:inline;font-size:12px}
  .side-nav{width:100%;align-items:center}
  .nav-item{justify-content:center;padding:0;height:48px;flex-direction:column;gap:2px;font-size:12px}
  .nav-item.is-active::before{top:8px;bottom:8px}
  .nav-item:hover::after{
    content:attr(data-label);position:absolute;left:74px;top:50%;transform:translateY(-50%);
    background:var(--ink);color:#fff;font-size:13px;padding:6px 12px;border-radius:var(--r-xs);
    white-space:nowrap;z-index:80;
  }
  .side-download{width:100%;padding:0 8px;font-size:13px}
  .side-foot{font-size:10px;text-align:center}
  .container{padding:0 28px}
  :root{--sec:80px}
  .hero{padding:88px 0 72px}
  .hero-grid,.value-grid,.cta-inner,.news-grid{grid-template-columns:1fr;gap:40px}
  .review-grid{grid-template-columns:1fr}
  .review-col.offset{margin-top:0}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .cta-actions{justify-content:flex-start}
}

/* ---------- 移动端 ---------- */
@media (max-width:639px){
  :root{--sec:60px}
  .app-sidebar{display:none}
  .site-main{margin-left:0}
  body{padding-top:var(--topbar-h)}
  .topbar{
    display:flex;align-items:center;gap:12px;position:fixed;top:0;left:0;right:0;
    height:var(--topbar-h);padding:0 16px;z-index:70;
    background:rgba(244,242,237,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
  }
  .hamburger{
    width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  }
  .hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:1px}
  .topbar-brand{font-size:15px;font-weight:800;color:var(--ink)}
  .drawer{
    display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;width:280px;
    background:#fff;z-index:90;padding:20px;transform:translateX(-100%);
    transition:transform .28s ease;overflow-y:auto;
  }
  .drawer.is-open{transform:none}
  .drawer-brand{height:48px;display:flex;align-items:center;font-weight:800;color:var(--ink);font-size:16px}
  .drawer .nav-item{height:44px}
  .drawer .nav-sub{height:36px;padding-left:26px;font-size:14px;display:flex;align-items:center;color:var(--text-2)}
  .drawer-mask{
    display:block;position:fixed;inset:0;background:rgba(13,14,16,.45);z-index:85;
    opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .container{padding:0 20px}
  .hero{padding:56px 0 48px}
  .hero-grid,.value-grid,.news-grid,.cta-inner{grid-template-columns:1fr;gap:32px}
  .hero-sub{font-size:16.5px}
  .btn-row{gap:12px}
  .btn{height:44px;padding:0 18px;width:100%}
  .btn-row .btn{width:100%}
  .stat-row{gap:24px;margin-top:36px}
  .stat-num{font-size:24px}
  .float-card{position:static;margin-top:16px;min-width:0;width:100%}
  .num-list li{grid-template-columns:48px 1fr;gap:14px;padding:22px 0}
  .num-list .num{font-size:30px}
  .review-grid{grid-template-columns:1fr}
  .review-col.offset{margin-top:0}
  .dl-grid{grid-template-columns:1fr}
  .news-lead-body h3{font-size:18px}
  .news-row{grid-template-columns:80px 1fr}
  .faq-wrap{padding:0}
  .faq-item.is-open::before{left:-10px}
  .cta-actions{justify-content:flex-start}
  .cta-actions .btn{width:100%}
  .footer-bottom{font-size:12px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .orbit-track{transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --brand:#E8462A;
  --brand-hover:#C93A20;
  --brand-press:#B23320;
  --brand-soft:rgba(232,70,42,.12);
  --brand-on-dark:#FF7A5C;
  --accent:#0FA47F;
  --bg:#F4F2ED;
  --surface:#FFFFFF;
  --dark:#0D0E10;
  --dark-2:#16181B;
  --text:#0D0E10;
  --text-2:#6B6E72;
  --text-3:#9A9DA1;
  --border:#E4E1DA;
  --radius-sm:10px;
  --radius-md:14px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(13,14,16,.06);
  --shadow-2:0 14px 32px -16px rgba(13,14,16,.22);
  --shadow-3:0 24px 48px -24px rgba(13,14,16,.30);
  --sidebar-w:240px;
  --sidebar-w-tablet:88px;
  --topbar-h:56px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Barlow Condensed","Archivo",Menlo,Consolas,monospace;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--font-sans);font-weight:700;line-height:1.25;color:var(--text);letter-spacing:.01em}
p{margin:0}
img{max-width:100%;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover,a:focus{color:var(--brand-hover)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font-family:inherit;font-size:16px}
.mono{font-family:var(--font-mono);font-style:normal;letter-spacing:.02em;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

/* Foundation 覆盖 */
.grid-x{margin-left:0;margin-right:0}
.grid-padding-x{margin-left:-16px;margin-right:-16px}
.grid-padding-x>.cell{padding-left:16px;padding-right:16px}
.row{max-width:none;margin:0}
.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border-radius:var(--radius-sm);
  height:48px;padding:0 24px;font-size:15px;font-weight:600;
  border:1px solid var(--brand);box-shadow:none;line-height:1;
  transition:background .2s ease,transform .15s ease,border-color .2s ease,color .2s ease;
}
.button:hover,.button:focus{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff}
.button:active{background:var(--brand-press);transform:translateY(1px)}
a:not(.button){background:transparent}

/* ============ 布局骨架 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh}
.container{max-width:1200px;margin:0 auto;padding:0 40px;width:100%}
@media (max-width:1023px){
  .main{margin-left:var(--sidebar-w-tablet)}
  .container{padding:0 28px}
}
@media (max-width:639px){
  .main{margin-left:0;padding-top:var(--topbar-h)}
  .container{padding:0 20px}
}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--dark);border-right:1px solid rgba(255,255,255,.06);
  display:flex;flex-direction:column;z-index:60;
}
.brand{
  height:88px;display:flex;align-items:center;gap:10px;
  padding:0 20px;border-bottom:1px solid rgba(255,255,255,.07);
  flex:0 0 auto;
}
.brand:hover{color:#fff}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:8px;
  background:var(--brand);position:relative;display:block;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;right:6px;top:8px;bottom:8px;
  border-radius:2px;
  background:repeating-linear-gradient(90deg,#fff 0 2px,rgba(255,255,255,0) 2px 5px);
}
.brand-text{color:#fff;font-size:16px;font-weight:800;letter-spacing:.01em;line-height:1.2}
.side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px 0 16px;border-radius:var(--radius-sm);
  color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:transparent;transition:background .2s ease;
}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-item.is-active{background:rgba(232,70,42,.16);color:var(--brand-on-dark)}
.nav-item.is-active::before{background:var(--brand)}
.nav-ico{width:18px;text-align:center;font-size:14px;flex:0 0 18px}
.nav-short{display:none}
.side-foot{padding:16px;border-top:1px solid rgba(255,255,255,.07);flex:0 0 auto}
.btn-dl{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:40px;border-radius:var(--radius-sm);background:var(--brand);
  color:#fff;font-size:14px;font-weight:600;transition:background .2s ease,transform .15s ease;
}
.btn-dl:hover{background:var(--brand-hover);color:#fff}
.btn-dl:active{transform:translateY(1px)}
.side-ver{
  margin-top:12px;text-align:center;font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.04em;color:rgba(255,255,255,.38);
}
@media (max-width:1023px) and (min-width:640px){
  .sidebar{width:var(--sidebar-w-tablet)}
  .brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .side-nav{padding:12px 8px;gap:6px}
  .nav-item{
    height:auto;flex-direction:column;gap:6px;padding:12px 4px;
    font-size:11px;line-height:1.2;text-align:center;letter-spacing:0;
  }
  .nav-item::before{top:6px;bottom:6px}
  .nav-ico{font-size:15px}
  .nav-txt{display:none}
  .nav-short{display:block}
  .side-foot{padding:12px 8px}
  .btn-dl span{display:none}
  .side-ver{font-size:10px}
}
@media (max-width:639px){
  .sidebar{display:none}
}

/* ============ 移动端顶栏 / 抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  background:var(--dark);z-index:70;align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid rgba(255,255,255,.07);
}
.topbar-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:15.5px;font-weight:800}
.topbar-brand:hover{color:#fff}
.topbar-brand .brand-mark{width:24px;height:24px;flex:0 0 24px;border-radius:7px}
.topbar-brand .brand-mark::after{left:5px;right:5px;top:7px;bottom:7px}
.hamburger{
  width:40px;height:40px;border-radius:9px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
  background:rgba(255,255,255,.06);transition:background .2s ease;
}
.hamburger:hover{background:rgba(255,255,255,.13)}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:#fff}
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,14,16,.55);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--dark);
  z-index:90;transform:translateX(-100%);transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  height:64px;display:flex;align-items:center;gap:10px;padding:0 16px;
  border-bottom:1px solid rgba(255,255,255,.08);flex:0 0 auto;
}
.drawer-brand{color:#fff;font-size:15px;font-weight:800;flex:1 1 auto}
.drawer-close{
  width:34px;height:34px;border-radius:8px;color:rgba(255,255,255,.7);
  font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(255,255,255,.1);color:#fff}
.drawer-nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
.drawer-nav .nav-item{height:44px;font-size:15px}
.drawer-nav .sub{padding-left:34px;font-size:14px;color:rgba(255,255,255,.6)}
.drawer-foot{padding:16px;border-top:1px solid rgba(255,255,255,.08);flex:0 0 auto}
@media (max-width:639px){
  .topbar{display:flex}
}
@media (min-width:640px){
  .drawer,.drawer-mask{display:none}
}

/* ============ 通用组件 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:600;line-height:1;
  letter-spacing:.01em;white-space:nowrap;
}
.pill-brand{color:var(--brand);background:var(--brand-soft);border:1px solid rgba(232,70,42,.28)}
.pill-accent{color:var(--accent);background:rgba(15,164,127,.1);border:1px solid rgba(15,164,127,.3)}
.pill-plain{color:var(--text-2);background:#fff;border:1px solid var(--border)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid rgba(13,14,16,.75)}
.btn-ghost:hover{background:var(--dark);color:#fff;border-color:var(--dark)}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.42)}
.btn-ghost-light:hover{background:#fff;color:var(--dark);border-color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand);position:relative;
}
.link-more i{transition:transform .2s ease}
.link-more::after{
  content:"";position:absolute;left:0;right:22px;bottom:-3px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.link-more:hover::after{transform:scaleX(1)}
.link-more:hover i{transform:translateX(4px)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:800}
.sec-sub{color:var(--text-2);font-size:14.5px;margin-top:8px}

/* ============ 文章页 ============ */
.page{padding:48px 0 0}
.crumb{
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);
  margin-bottom:26px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--border);font-size:12px}
.crumb .cur{color:var(--text-3);overflow:hidden;text-overflow:ellipsis}
.post-shell{max-width:1060px;margin:0 auto}
.post-head{padding-bottom:8px}
.post-title{
  font-size:clamp(26px,3.6vw,42px);font-weight:800;line-height:1.28;
  margin:16px 0 18px;letter-spacing:.005em;
}
.post-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--text-2);
}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--border);display:inline-block}
.post-meta .mono{color:var(--text-2)}
.post-cover{
  margin:26px 0 0;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--border);aspect-ratio:16/9;position:relative;
}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,0,.2,1)}
.post-cover:hover img{transform:scale(1.03)}
.post-cover::before{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,14,16,0) 60%,rgba(13,14,16,.28));
  pointer-events:none;
}
.post-body-grid{display:grid;grid-template-columns:1fr;gap:40px;margin-top:44px}
@media (min-width:1200px){
  .post-body-grid{grid-template-columns:220px minmax(0,760px);gap:56px}
}
.aside-note{
  align-self:start;position:sticky;top:32px;
  border:1px solid var(--border);background:#fff;border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.aside-note h2{font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--text-2)}
.aside-note ul{margin-top:14px;display:flex;flex-direction:column;gap:12px}
.aside-note li{font-size:14px;color:var(--text-2);line-height:1.6;padding-left:16px;position:relative}
.aside-note li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--brand-soft);
  border:1px solid rgba(232,70,42,.5);
}
@media (max-width:1199px){
  .aside-note{position:static;border:0;background:transparent;padding:0;box-shadow:none}
  .aside-note ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .aside-note li{
    background:#fff;border:1px solid var(--border);border-radius:var(--radius-pill);
    padding:6px 14px 6px 26px;font-size:13px;
  }
  .aside-note li::before{left:10px;top:50%;transform:translateY(-50%)}
}

/* 正文排版 */
.cms-article-body{font-size:17px;line-height:1.9;color:#22252A;max-width:760px}
.cms-article-body>p:first-child{font-size:17.5px;color:#33363B}
.cms-article-body p{margin:0 0 1.2em}
.cms-article-body h2{
  font-size:clamp(21px,2.2vw,26px);font-weight:800;line-height:1.3;
  margin:48px 0 16px;padding-left:15px;position:relative;
}
.cms-article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:2px;background:var(--brand);
}
.cms-article-body h3{font-size:20px;font-weight:700;line-height:1.4;margin:32px 0 12px}
.cms-article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px;color:var(--text-2)}
.cms-article-body ul,.cms-article-body ol{margin:0 0 1.2em;padding-left:0}
.cms-article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.cms-article-body ul li::before{
  content:"";position:absolute;left:4px;top:.74em;width:7px;height:7px;
  border-radius:2px;background:var(--brand);
}
.cms-article-body ol{counter-reset:li}
.cms-article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:li}
.cms-article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:var(--font-mono);font-size:13px;color:var(--brand);font-weight:600;
}
.cms-article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--bg);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  color:#3D4045;font-size:16px;
}
.cms-article-body blockquote p:last-child{margin-bottom:0}
.cms-article-body img{border-radius:12px;margin:24px auto;height:auto}
.cms-article-body figure{margin:26px 0}
.cms-article-body figcaption{
  text-align:center;font-size:13px;color:var(--text-3);margin-top:10px;
}
.cms-article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.cms-article-body a:hover{color:var(--brand-hover)}
.cms-article-body strong{font-weight:700;color:#111}
.cms-article-body code{
  font-family:var(--font-mono);font-size:14px;background:var(--bg);
  border:1px solid var(--border);border-radius:6px;padding:1px 6px;
}
.cms-article-body pre{
  background:var(--dark-2);color:#E8E6E1;border-radius:12px;padding:20px;
  overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7;margin:0 0 1.2em;
}
.cms-article-body pre code{background:none;border:0;padding:0;color:inherit}
.cms-article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.4em;
  border:1px solid var(--border);border-radius:12px;overflow:hidden;
}
.cms-article-body th,.cms-article-body td{
  padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;
}
.cms-article-body thead th{background:var(--bg);font-weight:700;font-size:14px;color:var(--text-2)}
.cms-article-body tbody tr:last-child td{border-bottom:0}
.cms-article-body hr{border:0;border-top:1px solid var(--border);margin:36px 0}

/* 空态 */
.empty-state{
  border:1px dashed var(--border);background:#fff;border-radius:var(--radius-md);
  padding:56px 32px;text-align:center;
}
.empty-state i{font-size:44px;color:var(--text-3);margin-bottom:18px;display:block}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:24px}

/* 标签 / 文末 */
.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--border)}
.post-tags .pill{height:28px;padding:0 14px}
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;
}
.post-nav-card{
  border:1px solid var(--border);background:#fff;border-radius:var(--radius-md);
  padding:20px 22px;display:flex;flex-direction:column;gap:8px;
  box-shadow:var(--shadow-1);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.post-nav-card:hover{border-color:rgba(232,70,42,.4);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.post-nav-card .dir{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.post-nav-card .ttl{
  font-size:15.5px;font-weight:600;color:var(--text);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.post-nav-card:hover .ttl{color:var(--brand)}
@media (max-width:639px){
  .post-nav{grid-template-columns:1fr}
}

/* 相关推荐 */
.related{padding:88px 0 0}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-md);overflow:hidden;height:100%;
  box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,70,42,.3)}
.rel-thumb{aspect-ratio:16/9;background:var(--border);overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.rel-body .ttl{font-size:16.5px;font-weight:700;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover .rel-body .ttl{color:var(--brand)}
.rel-body .desc{font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--font-mono);font-size:12.5px;color:var(--text-3)}
.rel-foot i{color:var(--brand);transition:transform .2s ease}
.rel-card:hover .rel-foot i{transform:translateX(4px)}

/* ============ CTA 条 ============ */
.cta-band{
  margin-top:96px;background:var(--dark);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(232,70,42,.06) 0 2px,rgba(232,70,42,0) 2px 26px);
  pointer-events:none;
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:40px;padding-top:64px;padding-bottom:64px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:800;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.62);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0;padding-top:64px}
.footer-brand{color:#fff;font-size:17px;font-weight:800;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:280px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-list li{font-size:14px;line-height:2;color:rgba(255,255,255,.55)}
.footer-list a{color:rgba(255,255,255,.72);position:relative;display:inline-block}
.footer-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.footer-list a:hover{color:#fff}
.footer-list a:hover::after{transform:scaleX(1)}
.footer-bottom{
  margin-top:36px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom span:last-child{font-family:var(--font-mono);letter-spacing:.03em}
@media (max-width:639px){
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
@media (max-width:1023px){
  .page{padding-top:36px}
  .related{padding-top:72px}
  .cta-band{margin-top:72px}
  .cta-inner{padding-top:52px;padding-bottom:52px}
}
@media (max-width:639px){
  body{font-size:15.5px}
  .page{padding-top:24px}
  .post-title{font-size:24px}
  .cms-article-body{font-size:16.5px}
  .cms-article-body h2{margin-top:36px}
  .post-body-grid{margin-top:32px}
  .related{padding-top:56px}
  .cta-band{margin-top:56px}
  .cta-inner{padding-top:44px;padding-bottom:44px;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .btn{height:44px;padding:0 20px}
}

/* roulang page: category1 */
:root{
  --brand:#E8462A;
  --brand-hover:#C93A20;
  --brand-press:#B23320;
  --brand-soft:rgba(232,70,42,.10);
  --brand-line:rgba(232,70,42,.30);
  --accent:#0FA47F;
  --bg:#F4F2ED;
  --surface:#FFFFFF;
  --dark:#0D0E10;
  --dark-2:#16181B;
  --ink:#0D0E10;
  --ink-2:#4B4E52;
  --ink-3:#6B6E72;
  --ink-4:#9A9DA1;
  --line:#E4E1DA;
  --radius:10px;
  --radius-card:14px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(13,14,16,.06);
  --shadow-2:0 14px 32px -16px rgba(13,14,16,.22);
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"Archivo","Barlow Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shell-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;background-color:transparent}
a:hover{color:var(--brand)}
p{margin:0 0 1.2em}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:.01em;color:var(--ink)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(232,70,42,.18)}
.container{max-width:1200px;margin:0 auto;padding:0 40px}
.mono{font-family:var(--font-mono);letter-spacing:.02em}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .12s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff}
.btn-primary:active{background:var(--brand-press)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(13,14,16,.35)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-on-dark{background:#fff;color:var(--ink);border-color:#fff}
.btn-on-dark:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-on-dark-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-on-dark-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-block{width:100%}
.link-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-more i{transition:transform .2s ease}
.link-more:hover i{transform:translateX(4px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-soft);border:1px solid var(--brand-line);
}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand);background:rgba(232,70,42,.08);border:1px solid var(--brand-line);
}
.tag-accent{color:#0B7A5F;background:rgba(15,164,127,.08);border-color:rgba(15,164,127,.3)}

/* ---------- Side shell ---------- */
.side-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.side-logo{
  height:88px;display:flex;align-items:center;gap:10px;padding:0 20px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.logo-mark{width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;border-radius:8px;background:var(--brand)}
.logo-mark svg{width:18px;height:18px;display:block}
.logo-text{font-size:15px;font-weight:800;letter-spacing:.01em;color:var(--ink);line-height:1.2}
.side-nav{padding:16px 0;display:flex;flex-direction:column;gap:2px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 20px;font-size:15px;color:var(--ink-3);
  border-left:3px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item i{width:16px;font-size:14px;color:var(--ink-4);transition:color .2s ease}
.nav-item:hover{background:rgba(232,70,42,.05);color:var(--ink)}
.nav-item:hover i{color:var(--brand)}
.nav-item.is-active{border-left-color:var(--brand);background:rgba(232,70,42,.08);color:var(--brand);font-weight:700}
.nav-item.is-active i{color:var(--brand)}
.side-foot{flex:0 0 auto;padding:16px 20px 22px;border-top:1px solid var(--line)}
.side-meta{margin-top:14px;font-family:var(--font-mono);font-size:12px;line-height:1.8;color:var(--ink-4)}

/* ---------- Mobile bar & drawer ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;padding:0 20px;
}
.mobile-brand{font-size:15px;font-weight:800;color:var(--ink)}
.rn-burger{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.rn-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.rn-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.rn-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.rn-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.rn-drawer{position:fixed;inset:0;z-index:120;visibility:hidden;pointer-events:none}
.rn-drawer.is-open{visibility:visible;pointer-events:auto}
.rn-drawer__scrim{position:absolute;inset:0;background:rgba(13,14,16,.5);opacity:0;transition:opacity .25s ease}
.rn-drawer.is-open .rn-drawer__scrim{opacity:1}
.rn-drawer__panel{
  position:absolute;top:0;left:0;bottom:0;width:280px;background:#fff;
  transform:translateX(-100%);transition:transform .28s ease;
  display:flex;flex-direction:column;box-shadow:var(--shadow-2);
}
.rn-drawer.is-open .rn-drawer__panel{transform:translateX(0)}
.rn-drawer__head{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line)}
.rn-drawer__head .brand-inline{font-size:15px;font-weight:800}
.rn-drawer__close{width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;color:var(--ink-3)}
.rn-drawer__nav{display:flex;flex-direction:column;padding:10px 0}
.drawer-item{
  display:flex;align-items:center;height:44px;padding:0 18px;font-size:15px;color:var(--ink-2);
  border-left:3px solid transparent;
}
.drawer-item.is-active{color:var(--brand);font-weight:700;border-left-color:var(--brand);background:rgba(232,70,42,.07)}
.drawer-item:hover{background:rgba(232,70,42,.05);color:var(--ink)}
.rn-drawer__foot{margin-top:auto;padding:18px;border-top:1px solid var(--line)}
.no-scroll{overflow:hidden}

/* ---------- App main ---------- */
.app-main{margin-left:var(--shell-w)}
.page-block{padding:88px 0;border-bottom:1px solid var(--line)}
.page-block:last-of-type{border-bottom:0}

/* ---------- Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.cat-hero__texture{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(13,14,16,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(13,14,16,.045) 1px,transparent 1px);
  background-size:32px 32px;
  pointer-events:none;
}
.cat-hero__photo{
  position:absolute;right:0;top:0;bottom:0;width:46%;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 45%);
  mask-image:linear-gradient(90deg,transparent,#000 45%);
}
.cat-hero__inner{position:relative;padding:64px 0 60px;min-height:280px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:18px}
.cat-h1{font-size:clamp(32px,5vw,54px);font-weight:800;letter-spacing:0}
.cat-h1 .brand-part{color:var(--brand);margin-right:10px}
.cat-hero__desc{font-size:18px;color:var(--ink-2);max-width:640px;margin:0}
.cat-hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:4px}

/* ---------- Anchor bar ---------- */
.anchor-bar{position:sticky;top:0;z-index:40;background:rgba(244,242,237,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.pill{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--ink-2);background:#fff;border:1px solid var(--line);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.pill:hover{border-color:var(--brand-line);color:var(--brand)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ---------- Split sections ---------- */
.split{display:grid;grid-template-columns:260px 1fr;gap:56px;align-items:start}
.split-head{position:sticky;top:96px}
.split-num{font-family:var(--font-mono);font-size:14px;color:var(--brand);letter-spacing:.1em;display:block;margin-bottom:8px}
.split-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.25}
.split-head p{margin:14px 0 0;font-size:14px;color:var(--ink-3);line-height:1.8}
.split-body{max-width:760px}
.split-body h3{font-size:20px;font-weight:700;margin:2em 0 .7em}
.split-body h3:first-child{margin-top:0}
.split-body p{font-size:17px;line-height:1.9;color:var(--ink-2)}
.lead{font-size:17px;color:var(--ink);font-weight:600;line-height:1.9}
.check-list{margin:24px 0 0;display:flex;flex-direction:column;gap:14px}
.check-list li{position:relative;padding-left:26px;font-size:16px;color:var(--ink-2);line-height:1.85}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;border-radius:2px;background:var(--brand);
}
.check-list strong{color:var(--ink);font-weight:700}
.figure{margin:28px 0 0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:#E4E1DA}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.figure:hover img{transform:scale(1.03)}
.figure figcaption{font-size:13px;color:var(--ink-3);padding:12px 16px;background:#fff;text-align:center}

/* ---------- Field cards ---------- */
.field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:28px 0 0}
.field-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.field-card:hover{border-color:var(--brand-line);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.field-card i{font-size:16px;color:var(--brand)}
.field-card h4{font-size:16px;font-weight:700;margin:12px 0 6px}
.field-card p{font-size:14px;line-height:1.8;color:var(--ink-3);margin:0}
.field-card .val{font-family:var(--font-mono);font-size:13px;color:var(--accent);display:block;margin-top:10px}

/* ---------- Steps ---------- */
.steps{margin:26px 0 0;border-top:1px solid var(--line)}
.step{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.step-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-family:var(--font-mono);font-size:14px;font-weight:700;
}
.step-body h4{font-size:17px;font-weight:700;margin-bottom:6px}
.step-body p{font-size:15px;line-height:1.85;color:var(--ink-3);margin:0}

/* ---------- Spec cards ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:28px}
.spec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.spec-card:hover{border-color:var(--brand-line);box-shadow:var(--shadow-2)}
.spec-card__head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px}
.spec-card__head i{color:var(--brand);font-size:15px}
.spec-card__head h3{font-size:17px;font-weight:700}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line)}
.spec-row:last-child{border-bottom:0}
.spec-label{font-size:13px;color:var(--ink-4)}
.spec-value{font-family:var(--font-mono);font-size:15px;color:var(--ink);text-align:right}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px}
.accordion.rn-faq{background:transparent;margin:0;list-style:none;border:0}
.rn-faq .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.rn-faq .accordion-item:hover{border-color:var(--brand-line)}
.rn-faq .accordion-item.is-active{box-shadow:var(--shadow-2)}
.rn-faq .accordion-title{
  position:relative;display:block;padding:0 54px 0 24px;height:56px;line-height:56px;
  font-size:16px;font-weight:700;color:var(--ink);border:0;border-bottom:0;background:transparent;
}
.rn-faq .accordion-item.is-active > .accordion-title{color:var(--brand)}
.rn-faq .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%) rotate(0deg);
  font-family:var(--font-mono);font-size:22px;font-weight:400;color:var(--brand);
  width:auto;height:auto;margin:0;transition:transform .25s ease;line-height:1;
}
.rn-faq .accordion-item.is-active > .accordion-title::before{content:"+";transform:translateY(-50%) rotate(45deg)}
.rn-faq .accordion-item.is-active{position:relative}
.rn-faq .accordion-item.is-active::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}
.rn-faq .accordion-content{border:0;padding:0 24px 22px;background:transparent}
.rn-faq .accordion-content p{font-size:15px;line-height:1.85;color:var(--ink-3);margin:0}

/* ---------- CTA strip ---------- */
.cta-strip{position:relative;background:var(--dark);color:#fff;overflow:hidden;padding:64px 0}
.cta-strip::before{
  content:"";position:absolute;inset:-40% -10%;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.06) 0 1px,transparent 1px 46px);
  pointer-events:none;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);color:#fff;font-weight:800;max-width:560px}
.cta-inner p{margin:12px 0 0;font-size:15px;color:rgba(255,255,255,.65);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Related cards ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:32px}
.rel-card{
  display:grid;grid-template-columns:150px 1fr;gap:18px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:16px;
  box-shadow:var(--shadow-1);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.rel-card:hover{border-color:var(--brand-line);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rel-thumb{border-radius:10px;overflow:hidden;background:#E4E1DA}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rel-body h3{font-size:17px;font-weight:700;margin-bottom:6px}
.rel-body p{font-size:14px;color:var(--ink-3);line-height:1.8;margin:0 0 8px}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#fff;padding:64px 0 24px;margin-top:0}
.footer-brand{font-size:18px;font-weight:800;color:#fff;margin-bottom:12px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin:0}
.footer-title{font-size:14px;font-weight:700;color:#FF7A5C;margin-bottom:16px;letter-spacing:.02em}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:10px;line-height:1.7}
.footer-list a{color:rgba(255,255,255,.62);position:relative;display:inline-block}
.footer-list a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:#FF7A5C;transition:width .2s ease;
}
.footer-list a:hover{color:#fff}
.footer-list a:hover::after{width:100%}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:16px;padding-top:20px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  :root{--shell-w:88px}
  .logo-text{display:none}
  .side-logo{justify-content:center;padding:0;height:76px}
  .nav-item{flex-direction:column;gap:6px;height:auto;padding:14px 4px;font-size:12px;line-height:1.3;text-align:center;border-left-width:3px}
  .nav-item i{font-size:16px}
  .side-foot{padding:14px 8px 18px}
  .side-foot .btn{padding:0 8px;font-size:12px}
  .side-meta{font-size:10px;text-align:center}
  .split{grid-template-columns:1fr;gap:24px}
  .split-head{position:static}
  .page-block{padding:72px 0}
  .field-grid,.spec-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
}
@media (max-width:639px){
  .side-shell{display:none}
  .mobile-bar{display:flex}
  .app-main{margin-left:0;padding-top:56px}
  .container{padding:0 20px}
  .page-block{padding:56px 0}
  .cat-hero__inner{padding:48px 0 44px;min-height:260px}
  .cat-h1 .brand-part{display:block;margin:0 0 6px}
  .cat-hero__photo{width:70%;opacity:.12}
  .anchor-bar{top:56px}
  .btn{height:44px;padding:0 18px;font-size:15px}
  .cta-strip{padding:48px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .rel-card{grid-template-columns:1fr;gap:14px}
  .footer-bottom{flex-direction:column;gap:8px}
  .rn-faq .accordion-title{height:auto;line-height:1.5;padding:18px 52px 18px 20px;font-size:15px}
  .rn-faq .accordion-content{padding:0 20px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#E8462A;
  --brand-hover:#C93A20;
  --brand-press:#B23320;
  --brand-on-dark:#FF7A5C;
  --accent:#0FA47F;
  --bg:#F4F2ED;
  --surface:#FFFFFF;
  --surface-2:#FAF9F6;
  --ink:#0D0E10;
  --ink-2:#16181B;
  --text:#1B1D20;
  --muted:#6B6E72;
  --faint:#9A9DA1;
  --line:#E4E1DA;
  --r-sm:10px;
  --r:14px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(13,14,16,.06);
  --sh-2:0 14px 32px -16px rgba(13,14,16,.22);
  --nav-w:240px;
  --sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"Barlow Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-hover)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.22;letter-spacing:0.01em;color:var(--ink)}
p{margin:0}
::selection{background:rgba(232,70,42,.16)}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}

/* ---------- Foundation 覆盖 ---------- */
a{color:var(--brand)}
a:hover,a:focus{color:var(--brand-hover)}
.button,.button:focus{
  background:var(--brand);
  border:0;
  border-radius:var(--r-sm);
  color:#fff;
  font-weight:600;
  padding:12px 24px;
  line-height:1.4;
}
.button:hover{background:var(--brand-hover);color:#fff}
.button.secondary{background:transparent;border:1px solid var(--ink);color:var(--ink)}
.button.secondary:hover{background:var(--ink);color:#fff}
.off-canvas{background:var(--ink);border:0;z-index:70;transition:transform .3s ease}
.off-canvas.position-left{left:-280px;width:280px}
.off-canvas.position-left.is-open{transform:translateX(280px)}
.off-canvas-content{transition:none;box-shadow:none;padding-left:var(--nav-w)}
@media screen and (min-width:640px){
  .off-canvas,.off-canvas.position-left{display:none !important}
}
@media screen and (max-width:639px){
  .off-canvas.position-left{position:fixed;top:0;left:-280px;height:100%;width:280px;display:block}
  .off-canvas-content{padding-left:0;padding-top:56px}
}
.accordion{background:transparent;border:0;margin:0}
.accordion-item{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.accordion-item:hover{border-color:rgba(232,70,42,.3)}
.accordion-item.is-active{border-color:rgba(232,70,42,.4);box-shadow:var(--sh-1)}
.accordion-title{
  display:block;position:relative;
  padding:17px 56px 17px 20px;
  font-size:16px;font-weight:700;color:var(--ink);
  background:transparent;border:0;line-height:1.5;
  transition:background .2s ease,color .2s ease;
}
.accordion-title:hover{background:var(--surface-2);color:var(--brand)}
.accordion-item.is-active .accordion-title{box-shadow:inset 3px 0 0 var(--brand)}
.accordion-title::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;right:20px;top:50%;
  transform:translateY(-50%);
  font-size:13px;color:var(--faint);
  transition:color .2s ease,transform .25s ease;
}
.accordion-item.is-active .accordion-title::before{content:"\f068";color:var(--brand)}
.accordion-content{
  padding:0 20px 20px;
  border:0;background:transparent;
  font-size:15px;color:var(--muted);line-height:1.85;
}
.grid-margin-x>.cell{padding-left:0;padding-right:0}

/* ---------- 侧边导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  z-index:50;
}
.nav-logo{
  height:88px;display:flex;align-items:center;gap:10px;
  padding:0 6px;flex:0 0 auto;
}
.logo-mark{
  width:26px;height:26px;flex:0 0 auto;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),#F2764F);
  position:relative;
}
.logo-mark::before,.logo-mark::after{
  content:"";position:absolute;left:5px;right:5px;height:2px;background:rgba(255,255,255,.9);border-radius:2px;
}
.logo-mark::before{top:9px}
.logo-mark::after{top:15px;right:9px}
.logo-text{
  font-size:14px;font-weight:800;color:var(--ink);line-height:1.25;
  letter-spacing:0.01em;
}
.nav-links{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.nav-item{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--muted);
  position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{font-size:14px;width:18px;text-align:center;color:var(--faint);transition:color .2s ease}
.nav-item:hover{background:var(--surface-2);color:var(--ink)}
.nav-item:hover i{color:var(--brand)}
.nav-item.is-active{
  background:rgba(232,70,42,.08);
  color:var(--brand);
}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.nav-item.is-active i{color:var(--brand)}
.nav-divider{height:1px;background:var(--line);margin:20px 6px}
.btn-nav{
  display:block;text-align:center;
  height:42px;line-height:42px;padding:0 12px;
  border-radius:var(--r-sm);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s ease,transform .15s ease;
}
.btn-nav:hover{background:var(--brand-hover);color:#fff}
.btn-nav:active{transform:translateY(1px)}
.nav-foot{
  margin-top:auto;padding:14px 6px 0;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;
  color:var(--faint);line-height:1.7;
}
@media screen and (min-width:640px) and (max-width:1023px){
  .side-nav{width:88px;padding:0 8px 16px}
  .nav-logo{height:76px;justify-content:center;padding:0}
  .logo-text{display:none}
  .nav-item{flex-direction:column;justify-content:center;gap:4px;height:66px;padding:0 2px;font-size:11px;font-weight:600;line-height:1.2;text-align:center}
  .nav-item i{font-size:16px;width:auto}
  .nav-item span{font-size:11px}
  .btn-nav{height:38px;line-height:38px;font-size:12px;padding:0 4px}
  .nav-foot{font-size:10px;text-align:center;padding:10px 0 0}
  .off-canvas-content{padding-left:88px}
}
@media screen and (max-width:639px){
  .side-nav{display:none}
}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;
}
@media screen and (max-width:639px){
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;
    padding:0 16px;background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
    z-index:55;
  }
  .mobile-logo{font-size:14px;font-weight:800;color:var(--ink)}
  .burger{
    width:40px;height:40px;border:0;background:transparent;
    display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
    cursor:pointer;border-radius:8px;
  }
  .burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease}
  .burger:hover span{background:var(--brand)}
}
body.nav-locked{overflow:hidden}

/* ---------- 抽屉 ---------- */
.drawer-head{
  height:64px;display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;border-bottom:1px solid rgba(255,255,255,.1);
}
.drawer-brand{font-size:14px;font-weight:800;color:#fff}
.drawer-close{background:transparent;border:0;color:#9A9DA1;font-size:18px;cursor:pointer;padding:6px}
.drawer-close:hover{color:#fff}
.drawer-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px}
.drawer-link{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  color:#C9C7C3;font-size:14px;font-weight:600;
  transition:background .2s ease,color .2s ease;
}
.drawer-link i{font-size:14px;width:18px;text-align:center;color:#6B6E72}
.drawer-link:hover{background:rgba(255,255,255,.06);color:#fff}
.drawer-link.is-active{background:rgba(232,70,42,.16);color:var(--brand-on-dark)}
.drawer-link.is-active i{color:var(--brand-on-dark)}
.drawer-sub{padding-left:30px;font-size:13px;color:#8B8E92;height:38px}
.drawer-foot{padding:16px 26px 30px;font-family:var(--mono);font-size:12px;color:#6B6E72;letter-spacing:.04em}

/* ---------- 容器 ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 40px;width:100%}
@media screen and (max-width:1023px){.container{padding:0 28px}}
@media screen and (max-width:639px){.container{padding:0 20px}}

/* ---------- 通用组件 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.pill-brand{background:rgba(232,70,42,.1);color:var(--brand);border:1px solid rgba(232,70,42,.24)}
.pill-accent{background:rgba(15,164,127,.09);color:var(--accent);border:1px solid rgba(15,164,127,.28)}
.pill-ghost{
  background:transparent;color:var(--muted);border:1px solid var(--line);
  height:32px;padding:0 14px;font-size:13px;font-weight:500;
  transition:all .2s ease;
}
.pill-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(232,70,42,.05)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-hover);color:#fff;box-shadow:0 10px 22px -12px rgba(232,70,42,.7)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--bg);color:var(--ink)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);position:relative;
}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(4px)}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--brand);transition:width .2s ease;
}
.link-arrow:hover::after{width:100%}

.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-ink{background:var(--ink);color:#E8E6E2}
@media screen and (max-width:1023px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media screen and (max-width:639px){.section{padding:56px 0}.section-tight{padding:44px 0}}

.sec-head{margin-bottom:44px;max-width:760px}
.sec-head h2{font-size:clamp(24px,3vw,40px);margin-bottom:12px}
.sec-head p{font-size:16px;color:var(--muted);line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:13px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--brand);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--brand);border-radius:2px}

/* ---------- Hero ---------- */
.hero-search{
  position:relative;overflow:hidden;
  padding:84px 0 76px;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.hero-search::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.11;pointer-events:none;
}
.hero-search::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(13,14,16,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(13,14,16,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(90deg,rgba(0,0,0,.55),transparent 78%);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.55),transparent 78%);
}
.hero-search .container{position:relative;z-index:2}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--faint);margin-bottom:22px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:var(--line)}
.hero-search h1{
  font-size:clamp(30px,4.4vw,54px);
  font-weight:900;letter-spacing:0.005em;
  max-width:860px;margin:16px 0 18px;
}
.hero-search .hero-sub{
  font-size:17px;color:var(--muted);max-width:620px;line-height:1.8;
}
.hero-search .pill-brand{margin-top:4px}
.search-wrap{margin-top:34px;max-width:640px}
.search-box{
  display:flex;align-items:center;gap:10px;
  height:52px;padding:0 8px 0 20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(232,70,42,.15);
}
.search-box i{color:var(--faint);font-size:15px}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;
  height:100%;font-size:15px;color:var(--text);outline:none;
}
.search-box input::placeholder{color:var(--faint)}
.search-box button{
  height:40px;padding:0 22px;border:0;border-radius:999px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background .2s ease;
}
.search-box button:hover{background:var(--brand-hover)}
.search-note{margin-top:12px;font-size:13px;color:var(--faint)}
.hot-words{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px}
.hot-label{font-size:13px;color:var(--faint)}
@media screen and (max-width:639px){
  .hero-search{padding:56px 0 52px}
  .hero-search h1{font-size:clamp(26px,7.5vw,34px)}
  .search-box{height:50px;padding:0 6px 0 16px}
  .search-box button{padding:0 16px}
}

/* ---------- 不规则卡片网格 ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:24px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(232,70,42,.3);
  box-shadow:var(--sh-2);
}
.card-lg{padding:0;overflow:hidden;border-radius:var(--r-lg);display:flex;flex-direction:column;height:100%}
.card-lg .card-media{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--line);
}
.card-lg .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card-lg:hover .card-media img{transform:scale(1.03)}
.card-lg .card-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-lg h3{font-size:24px;font-weight:800}
.card-lg p{font-size:15px;color:var(--muted)}
.meta-row{
  display:flex;flex-wrap:wrap;gap:16px;
  font-family:var(--mono);font-size:13px;letter-spacing:.03em;color:var(--faint);
}
.meta-row b{color:var(--ink);font-weight:600}
.card-sm{display:flex;gap:16px;align-items:flex-start;height:100%}
.icon-box{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(232,70,42,.08);color:var(--brand);font-size:18px;
}
.icon-box.accent{background:rgba(15,164,127,.1);color:var(--accent)}
.card-sm h3{font-size:16px;font-weight:700;margin-bottom:6px}
.card-sm p{font-size:14px;color:var(--muted);line-height:1.75}
.card-sm .tag-line{margin-top:10px;font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:.03em}
@media screen and (max-width:639px){
  .card{padding:20px}
  .card-lg h3{font-size:20px}
}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:1fr;gap:0}
.flow-item{
  display:flex;gap:24px;
  padding:26px 0;
  border-top:1px solid var(--line);
  transition:background .2s ease;
}
.flow-item:last-child{border-bottom:1px solid var(--line)}
.flow-num{
  font-family:var(--mono);font-size:36px;font-weight:600;line-height:1;
  color:rgba(232,70,42,.22);flex:0 0 auto;width:64px;
  letter-spacing:.02em;
}
.flow-body h3{font-size:18px;font-weight:700;margin-bottom:8px}
.flow-body p{font-size:15px;color:var(--muted)}
.flow-side{
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--line);aspect-ratio:4/5;
}
.flow-side img{width:100%;height:100%;object-fit:cover}

/* ---------- 参数对照 ---------- */
.spec-panel{
  background:var(--bg);
  border-radius:16px;
  padding:32px;
  border:1px solid var(--line);
  height:100%;
  transition:border-color .2s ease;
}
.spec-panel:hover{border-color:rgba(232,70,42,.3)}
.spec-panel h3{
  font-size:17px;font-weight:700;margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.spec-panel h3 i{color:var(--brand)}
.spec-list{display:flex;flex-direction:column}
.spec-row{
  display:flex;justify-content:space-between;align-items:baseline;gap:20px;
  padding:12px 0;border-bottom:1px dashed var(--line);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:13px;color:var(--faint);flex:0 0 auto}
.spec-row dd{
  margin:0;font-family:var(--mono);font-size:15px;font-weight:600;
  color:var(--ink);letter-spacing:.03em;text-align:right;
}
@media screen and (max-width:639px){
  .spec-panel{padding:20px}
  .spec-row{flex-direction:column;align-items:flex-start;gap:2px}
  .spec-row dd{text-align:left}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px}
.faq-group{margin-bottom:48px}
.faq-group:last-child{margin-bottom:0}
.faq-group h2{
  font-size:22px;font-weight:800;margin-bottom:20px;
  display:flex;align-items:center;gap:12px;
}
.faq-group h2 .g-num{
  font-family:var(--mono);font-size:14px;font-weight:600;
  color:var(--brand);letter-spacing:.08em;
  background:rgba(232,70,42,.08);
  border-radius:8px;padding:3px 10px;
}
.faq-group h2::after{content:none}

/* ---------- 相关链接 ---------- */
.rel-list{display:flex;flex-direction:column}
.rel-item{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding .2s ease;
}
.rel-item:first-child{border-top:1px solid var(--line)}
.rel-item:hover{background:var(--surface-2);padding-left:12px;padding-right:12px}
.rel-left{display:flex;align-items:center;gap:16px;min-width:0}
.rel-left i{color:var(--brand);font-size:14px;width:18px;text-align:center}
.rel-item h3{font-size:16px;font-weight:700;margin-bottom:4px}
.rel-item p{font-size:13px;color:var(--muted)}
.rel-item .arrow{color:var(--faint);font-size:14px;transition:transform .2s ease,color .2s ease}
.rel-item:hover .arrow{color:var(--brand);transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:56px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:180%;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 26px);
  opacity:.7;pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{
  color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:800;margin-bottom:10px;
}
.cta-band p{color:#A9A6A1;font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media screen and (max-width:639px){
  .cta-band{padding:36px 22px;border-radius:16px}
  .cta-actions .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:#A9A6A1;
  padding:72px 0 0;margin-top:0;
}
.site-footer .grid-x{margin-left:-16px;margin-right:-16px}
.footer-brand{
  font-size:16px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.01em;
}
.footer-desc{font-size:14px;line-height:1.85;color:#8B8E92;max-width:320px}
.footer-title{
  font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-list{display:flex;flex-direction:column;gap:11px}
.footer-list li{font-size:14px;color:#8B8E92;line-height:1.7}
.footer-list a{
  color:#8B8E92;position:relative;display:inline-block;
}
.footer-list a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--brand-on-dark);transition:width .2s ease;
}
.footer-list a:hover{color:#fff}
.footer-list a:hover::after{width:100%}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 16px 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:#6B6E72;
}
@media screen and (max-width:639px){
  .site-footer{padding-top:52px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.reveal.in{opacity:1;transform:translateY(0)}
.flow-item.reveal:nth-child(1){transition-delay:0ms}
.flow-item.reveal:nth-child(2){transition-delay:60ms}
.flow-item.reveal:nth-child(3){transition-delay:120ms}
.flow-item.reveal:nth-child(4){transition-delay:180ms}
.flow-item.reveal:nth-child(5){transition-delay:240ms}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}