/* roulang page: index */
:root{
  --bg:#0A0C10;
  --panel:#12161C;
  --panel-2:#171C24;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --primary:#C6FF3D;
  --accent:#2BE3D2;
  --hot:#FF3D7F;
  --text:#E8EDF2;
  --text-2:#9AA6B2;
  --text-3:#6B7683;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh:0 10px 40px -20px rgba(0,0,0,.85);
  --sh-neon:0 0 0 1px rgba(198,255,61,.35), 0 0 28px -6px rgba(198,255,61,.45);
  --ease:cubic-bezier(.4,0,.2,1);
  --section-gap:88px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),opacity .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(198,255,61,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0d1014}
::-webkit-scrollbar-thumb{background:#232a33;border-radius:999px;border:2px solid #0d1014}
::-webkit-scrollbar-thumb:hover{background:#33404d}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:var(--section-gap) 0;position:relative}
.section-tight{padding:56px 0}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,16,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.45) 38%,transparent 72%);
  opacity:.85;
}
.nav-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--primary) 0%,#8fd41f 42%,var(--accent) 100%);
  display:grid;place-items:center;
  color:#07090c;font-weight:900;font-size:15px;letter-spacing:-.04em;
  box-shadow:0 0 0 1px rgba(198,255,61,.4),0 0 22px -8px rgba(198,255,61,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15.5px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.14em;text-transform:uppercase;margin-top:2px}

.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 13px;border-radius:8px;
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:5px;height:2px;
  background:var(--primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--primary);text-shadow:0 0 14px rgba(198,255,61,.5)}
.nav-menu a.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(198,255,61,.7)}

.nav-cta{
  display:inline-flex;align-items:center;gap:7px;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--primary);color:#07090c;font-weight:800;font-size:14px;
  transition:all .2s var(--ease);
  box-shadow:0 0 0 1px rgba(198,255,61,.35);
}
.nav-cta:hover{background:#d6ff6b;transform:translateY(-2px);box-shadow:0 0 26px -6px rgba(198,255,61,.8)}
.nav-cta:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(198,255,61,.35)}

.nav-burger{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);place-items:center;color:var(--text);
}
.nav-burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}

.mobile-panel{
  display:none;border-top:1px solid var(--line);
  background:#0b0e13;padding:10px 0 18px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 20px;
  font-size:15px;color:var(--text-2);border-left:3px solid transparent;
}
.mobile-panel a.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(198,255,61,.06)}
.mobile-panel .mobile-cta{margin:12px 20px 0;justify-content:center;display:flex}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  transition:all .2s var(--ease);white-space:nowrap;cursor:pointer;
}
.btn-primary{background:var(--primary);color:#07090c;box-shadow:0 0 0 1px rgba(198,255,61,.3)}
.btn-primary:hover{background:#d8ff78;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(198,255,61,.55),0 0 28px -6px rgba(198,255,61,.75)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(198,255,61,.3)}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14px;font-weight:600}
.link-more:hover{color:var(--primary);gap:10px}
.link-more svg{transition:transform .2s var(--ease)}
.link-more:hover svg{transform:translateX(2px)}

/* ============ Badges & pills ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.badge-primary{color:var(--primary);background:rgba(198,255,61,.12);border:1px solid rgba(198,255,61,.3)}
.badge-accent{color:var(--accent);background:rgba(43,227,210,.12);border:1px solid rgba(43,227,210,.3)}
.badge-hot{color:var(--hot);background:rgba(255,61,127,.12);border:1px solid rgba(255,61,127,.32)}
.badge-mute{color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 84px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,12,16,.96) 0%,rgba(10,12,16,.9) 46%,rgba(10,12,16,.72) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(115deg,transparent 38%,rgba(198,255,61,.06) 39%,transparent 39.6%),
    linear-gradient(115deg,transparent 56%,rgba(43,227,210,.07) 56.4%,transparent 57%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:56px;align-items:center;
}
.hero h1{
  font-size:44px;line-height:1.14;font-weight:800;letter-spacing:-.02em;margin:18px 0 20px;
}
.hero h1 em{
  font-style:normal;color:var(--primary);
  text-shadow:0 0 26px rgba(198,255,61,.35);
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.trust-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(18,22,28,.7);
  font-size:12.5px;color:var(--text-2);
}
.trust-item b{color:var(--primary);font-weight:700}
.trust-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(198,255,61,.9);flex-shrink:0}

.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid rgba(198,255,61,.28);
  box-shadow:0 0 0 1px rgba(255,255,255,.04),0 30px 80px -30px rgba(0,0,0,.95),0 0 60px -22px rgba(198,255,61,.42);
  aspect-ratio:16/11;background:#0f1319;
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(10,12,16,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(10,12,16,.35) 1px,transparent 1px);
  background-size:32px 32px;
  opacity:.5;pointer-events:none;
}
.hero-chip{
  position:absolute;left:-14px;bottom:26px;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  background:rgba(18,22,28,.96);border:1px solid var(--line);
  box-shadow:var(--sh);
}
.hero-chip .chip-num{font-size:20px;font-weight:800;color:var(--primary)}
.hero-chip .chip-txt{font-size:12px;color:var(--text-2);line-height:1.4}
.hero-chip-r{
  position:absolute;right:-10px;top:22px;
  padding:10px 15px;border-radius:12px;
  background:rgba(23,28,36,.96);border:1px solid rgba(43,227,210,.28);
  box-shadow:var(--sh);font-size:12.5px;color:var(--accent);
  display:flex;align-items:center;gap:8px;
}

/* ============ Section heading ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;flex-wrap:wrap}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--primary);font-weight:700;margin-bottom:12px;
}
.sec-tag::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px;box-shadow:0 0 10px rgba(198,255,61,.8)}
.sec-head h2{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.015em}
.sec-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:660px}

/* ============ Category quick strip ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.cat-card{
  position:relative;display:block;overflow:hidden;
  padding:24px 22px 22px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);
  transition:all .25s var(--ease);
}
.cat-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.2));
  opacity:.55;transition:opacity .25s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(198,255,61,.35);box-shadow:var(--sh-neon)}
.cat-card:hover::before{opacity:1}
.cat-icon{
  width:44px;height:44px;border-radius:12px;margin-bottom:16px;
  display:grid;place-items:center;
  background:rgba(198,255,61,.09);border:1px solid rgba(198,255,61,.26);
  color:var(--primary);
}
.cat-card h3{font-size:17px;font-weight:700;margin-bottom:8px;line-height:1.5}
.cat-card p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.cat-card .cat-index{
  position:absolute;right:18px;top:18px;font-size:12px;color:var(--text-3);
}

/* ============ Screenshot carousel ============ */
.shots-wrap{position:relative}
.shots-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:14px;scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;
  border-radius:var(--r-card);overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  transition:all .25s var(--ease);
}
.shot.is-current{border-color:rgba(198,255,61,.45);box-shadow:var(--sh-neon)}
.shot-img{aspect-ratio:16/9;background:#0f1319;overflow:hidden}
.shot-img img{width:100%;height:100%;object-fit:cover}
.shot-body{padding:16px 18px 18px}
.shot-body h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.shot-body p{font-size:13px;color:var(--text-2);line-height:1.7}
.shots-nav{display:flex;align-items:center;gap:12px;justify-content:flex-end;margin-top:18px}
.shots-dots{display:flex;gap:7px;margin-right:auto}
.shots-dots button{
  width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16);
  transition:all .2s var(--ease);
}
.shots-dots button.is-on{width:24px;border-radius:999px;background:var(--primary);box-shadow:0 0 10px rgba(198,255,61,.8)}
.shots-arrow{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-2);
  transition:all .2s var(--ease);
}
.shots-arrow:hover{border-color:var(--primary);color:var(--primary)}

/* ============ Advantages ============ */
.adv-layout{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.15fr);gap:40px;align-items:center}
.adv-visual{
  border-radius:var(--r-card);overflow:hidden;position:relative;
  border:1px solid var(--line);aspect-ratio:4/3;background:#0f1319;
}
.adv-visual img{width:100%;height:100%;object-fit:cover}
.adv-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,16,0) 42%,rgba(10,12,16,.85) 100%);
}
.adv-stat{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:flex;gap:22px;
}
.adv-stat div b{display:block;font-size:22px;font-weight:800;color:var(--primary);line-height:1.2}
.adv-stat div span{font-size:12px;color:var(--text-2)}
.adv-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.adv-item{
  padding:22px 20px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);
  transition:all .25s var(--ease);
}
.adv-item:hover{border-color:rgba(198,255,61,.35);transform:translateY(-4px);box-shadow:var(--sh-neon)}
.adv-item:nth-child(2){transform:translateY(24px)}
.adv-item:nth-child(2):hover{transform:translateY(20px)}
.adv-item:nth-child(4){transform:translateY(24px)}
.adv-item:nth-child(4):hover{transform:translateY(20px)}
.adv-num{font-size:26px;font-weight:800;color:var(--primary);letter-spacing:-.03em;line-height:1;margin-bottom:14px}
.adv-item h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.adv-item p{font-size:13.5px;color:var(--text-2);line-height:1.75}

/* ============ Sysreq ============ */
.req-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.req-card{
  border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--panel);overflow:hidden;
}
.req-card-head{
  padding:16px 22px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:10px;
  font-size:14px;font-weight:700;color:var(--text);
  background:rgba(23,28,36,.6);
}
.req-card-head .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(43,227,210,.85)}
.req-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:14px 22px;border-bottom:1px solid var(--line-soft);
}
.req-row:last-child{border-bottom:none}
.req-row .k{font-size:13.5px;color:var(--text-3);flex-shrink:0}
.req-row .v{font-size:13.5px;color:var(--text);text-align:right;font-weight:600}
.req-row .v.hl{color:var(--primary)}

/* ============ Reviews ============ */
.review-cols{columns:2;column-gap:22px}
.review-card{
  break-inside:avoid;margin-bottom:22px;
  padding:22px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);
  transition:all .25s var(--ease);
}
.review-card:hover{border-color:rgba(43,227,210,.32);transform:translateY(-3px)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-ava{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-weight:800;font-size:15px;color:#07090c;
  background:linear-gradient(140deg,var(--primary),var(--accent));
}
.review-name{font-size:14.5px;font-weight:700}
.review-meta{font-size:12px;color:var(--text-3)}
.stars{display:flex;gap:3px;color:var(--primary);font-size:13px;margin-bottom:10px;letter-spacing:2px}
.review-card p{font-size:13.5px;color:var(--text-2);line-height:1.8}

/* ============ News / CMS ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);background:var(--panel);border:1px solid var(--line);
  transition:all .25s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(198,255,61,.35);box-shadow:var(--sh-neon)}
.news-cover{aspect-ratio:16/10;overflow:hidden;background:#0f1319}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:16px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.5px;color:var(--text-2);line-height:1.75;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:10px;margin-top:auto;padding-top:6px}
.news-foot time{font-size:12.5px;color:var(--text-3)}
.news-empty{
  grid-column:1/-1;padding:56px 24px;text-align:center;
  border-radius:var(--r-card);border:1px dashed rgba(255,255,255,.14);
  background:rgba(18,22,28,.6);
}
.news-empty .empty-icon{
  width:56px;height:56px;border-radius:16px;margin:0 auto 18px;
  display:grid;place-items:center;color:var(--accent);
  background:rgba(43,227,210,.08);border:1px solid rgba(43,227,210,.28);
}
.news-empty p{color:var(--text-2);font-size:14.5px;margin-bottom:18px}
.news-empty-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px 22px 0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{width:13px;height:2px}
.faq-icon::after{width:2px;height:13px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{
  padding:0 48px 24px 16px;font-size:14.5px;color:var(--text-2);line-height:1.9;
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary);padding-left:18px}
.faq-item.is-open{padding-left:0}

/* ============ Download CTA ============ */
.cta-block{
  position:relative;overflow:hidden;
  border-radius:22px;border:1px solid rgba(198,255,61,.22);
  background:linear-gradient(140deg,#10141a 0%,#0c0f14 60%,#0a0c10 100%);
  padding:52px 48px;
}
.cta-block::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(118deg,transparent 30%,rgba(198,255,61,.09) 30.3%,transparent 30.9%),
    linear-gradient(118deg,transparent 52%,rgba(43,227,210,.09) 52.3%,transparent 52.9%),
    linear-gradient(118deg,transparent 74%,rgba(198,255,61,.07) 74.3%,transparent 74.9%);
}
.cta-inner{position:relative;z-index:2}
.cta-inner h2{font-size:30px;font-weight:700;letter-spacing:-.015em;margin-bottom:12px}
.cta-inner > p{color:var(--text-2);font-size:15px;max-width:640px;margin-bottom:32px}
.dl-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.dl-btn{
  display:flex;flex-direction:column;gap:6px;text-align:left;
  padding:18px 18px 16px;border-radius:14px;
  border:1px solid rgba(255,255,255,.14);background:rgba(18,22,28,.72);
  transition:all .2s var(--ease);
}
.dl-btn:hover{border-color:var(--primary);transform:translateY(-3px)}
.dl-btn .dl-plat{font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px}
.dl-btn .dl-info{font-size:12px;color:var(--text-3);letter-spacing:.02em}
.dl-btn.is-main{background:var(--primary);border-color:var(--primary);color:#07090c}
.dl-btn.is-main .dl-info{color:rgba(7,9,12,.68)}
.dl-btn.is-main:hover{background:#d8ff78;box-shadow:0 0 28px -6px rgba(198,255,61,.85)}
.cta-note{margin-top:22px;font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:8px}

/* ============ Footer ============ */
.site-footer{
  margin-top:var(--section-gap);
  border-top:1px solid var(--line);position:relative;
  background:#0b0e13;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.4) 42%,transparent 80%);
}
.footer-cols{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;padding:58px 0 42px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:13px;border-radius:10px}
.footer-brand span{font-size:15px;font-weight:800}
.footer-col p{font-size:13.5px;color:var(--text-2);line-height:1.85;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:18px;color:var(--text)}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:13.5px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--primary)}
.footer-info{font-size:13.5px;color:var(--text-2);line-height:2}
.footer-info b{color:var(--text);font-weight:600}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ Responsive ============ */
@media (max-width:1279px){
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1100px){
  .nav-menu{display:none}
  .nav-cta{display:none}
  .nav-burger{display:grid}
}
@media (max-width:1023px){
  :root{--section-gap:64px}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:36px}
  .hero-visual{order:-1}
  .hero-chip{left:12px;bottom:14px}
  .hero-chip-r{right:12px;top:14px}
  .adv-layout{grid-template-columns:1fr;gap:32px}
  .adv-item:nth-child(2),.adv-item:nth-child(4){transform:none}
  .adv-item:nth-child(2):hover,.adv-item:nth-child(4):hover{transform:translateY(-4px)}
  .review-cols{columns:1}
  .footer-cols{grid-template-columns:1fr 1fr;gap:34px}
  .shot{flex:0 0 calc((100% - 20px)/2)}
}
@media (max-width:767px){
  :root{--section-gap:56px}
  .container{padding:0 20px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .sec-head h2{font-size:25px}
  .sec-head{margin-bottom:28px}
  .cat-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .adv-list{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .cta-block{padding:34px 24px;border-radius:18px}
  .cta-inner h2{font-size:23px}
  .shot{flex:0 0 86%}
  .footer-cols{grid-template-columns:1fr;gap:30px;padding:44px 0 32px}
  .faq-q{font-size:15.5px;padding:18px 0}
  .faq-a-inner{padding-right:20px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
}
@media (max-width:520px){
  .nav-inner{height:60px}
  .brand-sub{display:none}
  .hero h1{font-size:26px}
  .hero-chip,.hero-chip-r{position:static;margin-top:12px;display:inline-flex}
  .hero-visual .hero-chip-r{margin-left:8px}
  .trust-item{font-size:12px;padding:6px 11px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: article */
:root {
    --bg: #0A0C10;
    --panel: #12161C;
    --panel-2: #171C24;
    --line: rgba(255, 255, 255, .08);
    --line-strong: rgba(255, 255, 255, .16);
    --primary: #C6FF3D;
    --accent: #2BE3D2;
    --hot: #FF3D7F;
    --text: #E8EDF2;
    --text-2: #9AA6B2;
    --text-3: #6B7683;
    --input-bg: #0E1218;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-pill: 999px;
    --shadow: 0 10px 40px -20px rgba(0, 0, 0, .85);
    --glow: 0 0 0 1px rgba(198, 255, 61, .35), 0 0 28px -6px rgba(198, 255, 61, .45);
    --ease: cubic-bezier(.4, 0, .2, 1);
  }

  *, *::before, *::after { box-sizing: border-box; }

  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.8;
    overflow-x: hidden;
    background-image:
      linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
    background-size: 24px 24px, 24px 24px;
  }

  img { max-width: 100%; display: block; border-style: none; }
  a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
  button { font-family: inherit; cursor: pointer; }
  input, select, textarea { font-family: inherit; }

  ::selection { background: rgba(198, 255, 61, .28); color: #fff; }

  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: #0A0C10; }
  ::-webkit-scrollbar-thumb { background: #232A34; border-radius: 999px; border: 2px solid #0A0C10; }
  ::-webkit-scrollbar-thumb:hover { background: #38424F; }

  :focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .mono { font-variant-numeric: tabular-nums; letter-spacing: .02em; }
  .sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
  }

  /* ---------- 顶部导航 ---------- */
  .topbar {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(10, 12, 16, .88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
  }
  .topbar::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, rgba(198, 255, 61, .75), rgba(43, 227, 210, .28) 38%, transparent 78%);
    pointer-events: none;
  }
  .nav-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 72px;
  }
  .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand-mark {
    width: 34px; height: 34px;
    display: grid; place-items: center;
    border-radius: 10px;
    background: linear-gradient(140deg, var(--primary), var(--accent));
    color: #08110A;
    font-weight: 800;
    font-size: 14px;
    letter-spacing: .04em;
    box-shadow: 0 0 22px -8px rgba(198, 255, 61, .8);
  }
  .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
  .brand-name { font-size: 16px; font-weight: 800; letter-spacing: -.01em; }
  .brand-sub { font-size: 11px; color: var(--text-3); letter-spacing: .14em; }

  .nav-menu { display: flex; align-items: center; gap: 4px; margin-left: 12px; flex: 1; }
  .nav-menu a {
    position: relative;
    padding: 10px 12px;
    font-size: 14px;
    color: var(--text-2);
    border-radius: 8px;
    white-space: nowrap;
    transition: color .2s var(--ease);
  }
  .nav-menu a::after {
    content: "";
    position: absolute;
    left: 12px; right: 12px; bottom: 2px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .2s var(--ease);
    border-radius: 2px;
  }
  .nav-menu a:hover { color: var(--text); }
  .nav-menu a:hover::after { transform: scaleX(1); }
  .nav-menu a.is-active {
    color: var(--primary);
    text-shadow: 0 0 14px rgba(198, 255, 61, .45);
  }
  .nav-menu a.is-active::after { transform: scaleX(1); }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: var(--radius-pill);
    background: var(--primary);
    color: #09120B;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
    transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
  }
  .nav-cta:hover {
    background: #D5FF66;
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(198, 255, 61, .5), 0 0 26px -4px rgba(198, 255, 61, .6);
  }
  .nav-cta:active { transform: translateY(1px); box-shadow: none; }

  .menu-toggle {
    display: none;
    width: 44px; height: 44px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    color: var(--text);
  }
  .menu-toggle span {
    display: block; width: 18px; height: 2px; background: currentColor;
    position: relative; border-radius: 2px;
  }
  .menu-toggle span::before,
  .menu-toggle span::after {
    content: ""; position: absolute; left: 0; width: 18px; height: 2px;
    background: currentColor; border-radius: 2px; transition: transform .2s var(--ease);
  }
  .menu-toggle span::before { top: -6px; }
  .menu-toggle span::after { top: 6px; }

  .mobile-panel {
    display: none;
    border-top: 1px solid var(--line);
    background: rgba(10, 12, 16, .98);
  }
  .mobile-panel.is-open { display: block; }
  .mobile-panel a {
    display: flex;
    align-items: center;
    height: 48px;
    padding: 0 20px;
    font-size: 15px;
    color: var(--text-2);
    border-bottom: 1px solid var(--line);
  }
  .mobile-panel a.is-active {
    color: var(--primary);
    border-left: 3px solid var(--primary);
    padding-left: 17px;
    background: rgba(198, 255, 61, .05);
  }
  .mobile-panel .m-cta {
    margin: 14px 20px 18px;
    justify-content: center;
    border-radius: var(--radius-pill);
    background: var(--primary);
    color: #09120B;
    font-weight: 700;
    border-bottom: none;
    height: 46px;
  }

  /* ---------- 面包屑 ---------- */
  .crumb-wrap { padding: 28px 0 0; }
  .crumb {
    font-size: 13px;
    color: var(--text-2);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    line-height: 1.6;
  }
  .crumb .sep { color: var(--text-3); }
  .crumb a:hover { color: var(--primary); }
  .crumb .current { color: var(--primary); }

  /* ---------- 文章布局 ---------- */
  .article-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    padding: 28px 0 0;
  }
  @media (min-width: 1280px) {
    .article-shell { grid-template-columns: 236px minmax(0, 1fr); gap: 56px; }
  }

  .toc { display: none; }
  @media (min-width: 1280px) {
    .toc { display: block; }
    .toc-inner {
      position: sticky;
      top: 104px;
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: var(--radius-card);
      background: linear-gradient(180deg, var(--panel-2), var(--panel));
      box-shadow: var(--shadow);
    }
    .toc-title {
      font-size: 12px;
      letter-spacing: .16em;
      color: var(--text-3);
      text-transform: uppercase;
      margin: 0 0 12px;
    }
    .toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
    .toc-list a {
      display: block;
      font-size: 13px;
      color: var(--text-2);
      padding: 7px 10px;
      border-radius: 8px;
      border-left: 2px solid transparent;
      line-height: 1.5;
    }
    .toc-list a:hover {
      color: var(--primary);
      background: rgba(198, 255, 61, .06);
      border-left-color: var(--primary);
    }
  }

  .article-head { margin-bottom: 34px; }
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    line-height: 1.6;
    border: 1px solid rgba(198, 255, 61, .35);
    background: rgba(198, 255, 61, .1);
    color: var(--primary);
  }
  .badge.is-cyan {
    border-color: rgba(43, 227, 210, .35);
    background: rgba(43, 227, 210, .1);
    color: var(--accent);
  }
  .badge.is-hot {
    border-color: rgba(255, 61, 127, .35);
    background: rgba(255, 61, 127, .1);
    color: var(--hot);
  }

  .article-head h1 {
    font-size: clamp(24px, 3.2vw, 34px);
    line-height: 1.28;
    font-weight: 800;
    letter-spacing: -.02em;
    margin: 16px 0 14px;
    max-width: 860px;
  }
  .meta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 18px;
    font-size: 13px;
    color: var(--text-2);
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }
  .meta-row .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); }
  .meta-row b { color: var(--text); font-weight: 600; }

  /* ---------- 正文排版 ---------- */
  .article-body {
    max-width: 760px;
    font-size: 16px;
    line-height: 1.85;
    color: #DCE3EA;
  }
  .article-body > *:first-child { margin-top: 0; }
  .article-body p { margin: 16px 0; }
  .article-body h2 {
    position: relative;
    font-size: 27px;
    line-height: 1.4;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--text);
    margin: 40px 0 16px;
    padding-left: 16px;
  }
  .article-body h2::before {
    content: "";
    position: absolute;
    left: 0; top: .22em;
    width: 3px; height: 1em;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--primary), rgba(198, 255, 61, .15));
    box-shadow: 0 0 14px rgba(198, 255, 61, .5);
  }
  .article-body h3 {
    font-size: 21px;
    line-height: 1.5;
    font-weight: 600;
    color: var(--text);
    margin: 32px 0 12px;
  }
  .article-body h4 {
    font-size: 17px;
    font-weight: 600;
    margin: 24px 0 10px;
    color: var(--text);
  }
  .article-body ul, .article-body ol { margin: 16px 0; padding-left: 22px; }
  .article-body ul { list-style: none; padding-left: 4px; }
  .article-body ul > li {
    position: relative;
    padding-left: 20px;
    margin: 10px 0;
  }
  .article-body ul > li::before {
    content: "";
    position: absolute;
    left: 2px; top: .72em;
    width: 7px; height: 7px;
    border-radius: 2px;
    background: var(--primary);
    box-shadow: 0 0 10px rgba(198, 255, 61, .55);
  }
  .article-body ol { list-style: decimal; }
  .article-body ol > li { margin: 10px 0; padding-left: 4px; }
  .article-body ol > li::marker { color: var(--primary); font-variant-numeric: tabular-nums; }
  .article-body blockquote {
    margin: 24px 0;
    padding: 18px 20px;
    border-left: 3px solid var(--primary);
    background: var(--panel);
    border-radius: 0 var(--radius-card) var(--radius-card) 0;
    color: #C7D0D9;
  }
  .article-body blockquote p { margin: 8px 0; }
  .article-body img {
    border-radius: var(--radius-card);
    border: 1px solid var(--line);
    margin: 24px 0 8px;
    width: 100%;
    height: auto;
  }
  .article-body figure { margin: 24px 0; }
  .article-body figcaption {
    font-size: 13px;
    color: var(--text-2);
    text-align: center;
    margin-top: 8px;
  }
  .article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
  }
  .article-body a:hover { color: var(--accent); }
  .article-body code {
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 2px 6px;
    font-size: 14px;
    color: var(--accent);
  }
  .article-body pre {
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 18px;
    overflow-x: auto;
    font-size: 14px;
  }
  .article-body pre code { background: none; border: none; padding: 0; }
  .article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
  }
  .article-body th, .article-body td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
  }
  .article-body th { background: var(--panel-2); color: var(--text); font-weight: 600; }
  .article-body tr:last-child td { border-bottom: none; }
  .article-body hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(198, 255, 61, .4), transparent);
    margin: 36px 0;
  }

  /* ---------- 空状态 ---------- */
  .empty-state {
    max-width: 760px;
    padding: 56px 28px;
    text-align: center;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius-card);
    background: var(--panel);
  }
  .empty-icon {
    width: 56px; height: 56px;
    margin: 0 auto 18px;
    border-radius: 16px;
    background: linear-gradient(140deg, rgba(198, 255, 61, .16), rgba(43, 227, 210, .12));
    border: 1px solid var(--line);
    display: grid; place-items: center;
    color: var(--primary);
    font-size: 22px;
  }
  .empty-state h2 { font-size: 22px; margin: 0 0 10px; font-weight: 700; }
  .empty-state p { color: var(--text-2); margin: 0 0 24px; font-size: 15px; }

  /* ---------- 按钮 ---------- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  }
  .btn-primary {
    background: var(--primary);
    color: #09120B;
    box-shadow: 0 0 0 1px rgba(198, 255, 61, .2), 0 0 26px -10px rgba(198, 255, 61, .8);
  }
  .btn-primary:hover {
    background: #D5FF66;
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(198, 255, 61, .5), 0 0 30px -4px rgba(198, 255, 61, .6);
  }
  .btn-primary:active { transform: translateY(1px); box-shadow: none; }
  .btn-ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--line-strong);
  }
  .btn-ghost:hover {
    border-color: rgba(198, 255, 61, .6);
    color: var(--primary);
    transform: translateY(-2px);
  }
  .btn-ghost:active { transform: translateY(1px); }
  .link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    transition: transform .2s var(--ease), color .2s var(--ease);
  }
  .link-arrow:hover { transform: translateX(2px); color: var(--accent); }

  /* ---------- 通用板块 ---------- */
  .section { padding: 88px 0 0; }
  .section-tight { padding: 64px 0 0; }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 28px;
  }
  .section-head h2 {
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 700;
    letter-spacing: -.015em;
    margin: 0;
    line-height: 1.3;
  }
  .section-head p { margin: 8px 0 0; color: var(--text-2); font-size: 15px; max-width: 620px; }

  .divider-glow {
    height: 1px;
    background: linear-gradient(90deg, rgba(198, 255, 61, .55), rgba(43, 227, 210, .25) 40%, transparent 85%);
    margin: 56px 0 0;
  }

  /* ---------- 相关推荐卡片 ---------- */
  .rel-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, var(--panel-2), var(--panel));
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), rgba(43, 227, 210, .5), transparent);
    opacity: .7;
  }
  .card:hover {
    transform: translateY(-4px);
    border-color: rgba(198, 255, 61, .35);
    box-shadow: var(--glow);
  }
  .card-media {
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, rgba(198, 255, 61, .12), rgba(43, 227, 210, .1));
    overflow: hidden;
    border-bottom: 1px solid var(--line);
  }
  .card-media img { width: 100%; height: 100%; object-fit: cover; }
  .card-body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
  .card-body h3 {
    font-size: 17px;
    line-height: 1.5;
    font-weight: 600;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .card-body p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .card-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 12px;
    color: var(--text-3);
  }

  /* ---------- 继续查阅 ---------- */
  .nav-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .pair-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--panel);
    transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .pair-item:hover {
    transform: translateY(-3px);
    border-color: rgba(198, 255, 61, .35);
    box-shadow: var(--glow);
  }
  .pair-label { font-size: 12px; letter-spacing: .14em; color: var(--text-3); }
  .pair-item strong { font-size: 16px; font-weight: 600; line-height: 1.6; }
  .pair-item span.desc { font-size: 13px; color: var(--text-2); line-height: 1.7; }

  /* ---------- CTA ---------- */
  .cta-band {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 20px;
    background:
      radial-gradient(120% 140% at 8% 0%, rgba(198, 255, 61, .14), transparent 55%),
      linear-gradient(180deg, var(--panel-2), var(--panel));
    padding: 46px 40px;
    box-shadow: var(--shadow);
  }
  .cta-band::after {
    content: "";
    position: absolute;
    inset: -40% -10% auto auto;
    width: 320px; height: 320px;
    background: repeating-linear-gradient(115deg, rgba(198, 255, 61, .35) 0 1px, transparent 1px 22px);
    transform: rotate(8deg);
    opacity: .45;
    pointer-events: none;
  }
  .cta-inner { position: relative; z-index: 1; display: grid; gap: 24px; }
  .cta-band h2 {
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 700;
    margin: 0 0 10px;
    letter-spacing: -.015em;
  }
  .cta-band p { margin: 0; color: var(--text-2); max-width: 640px; font-size: 15px; }
  .cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }

  /* ---------- FAQ ---------- */
  .faq-list { border-top: 1px solid var(--line); }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 20px 4px 20px 0;
    background: none;
    border: none;
    color: var(--text);
    font-size: 17px;
    font-weight: 600;
    text-align: left;
    line-height: 1.6;
    position: relative;
    transition: color .2s var(--ease);
  }
  .faq-q::before {
    content: "";
    position: absolute;
    left: -14px; top: 16px; bottom: 16px;
    width: 3px;
    border-radius: 2px;
    background: var(--primary);
    box-shadow: 0 0 14px rgba(198, 255, 61, .5);
    opacity: 0;
    transition: opacity .2s var(--ease);
  }
  .faq-item.is-open .faq-q::before { opacity: 1; }
  .faq-q:hover { color: var(--primary); }
  .faq-sign {
    flex-shrink: 0;
    width: 22px; height: 22px;
    position: relative;
  }
  .faq-sign::before, .faq-sign::after {
    content: "";
    position: absolute;
    left: 50%; top: 50%;
    background: var(--primary);
    border-radius: 2px;
    transform: translate(-50%, -50%);
    transition: transform .24s var(--ease), opacity .24s var(--ease);
  }
  .faq-sign::before { width: 14px; height: 2px; }
  .faq-sign::after { width: 2px; height: 14px; }
  .faq-item.is-open .faq-sign::after { transform: translate(-50%, -50%) scaleY(0); opacity: 0; }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .24s var(--ease);
  }
  .faq-a-inner {
    padding: 0 40px 22px 0;
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.85;
  }

  /* ---------- 页脚 ---------- */
  .site-footer {
    margin-top: 88px;
    position: relative;
    background: #080A0D;
    border-top: 1px solid var(--line);
  }
  .site-footer::before {
    content: "";
    position: absolute;
    top: -1px; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--primary), rgba(43, 227, 210, .35) 40%, transparent 80%);
  }
  .footer-cols {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 56px 0 36px;
  }
  .footer-col h4 {
    font-size: 14px;
    margin: 0 0 16px;
    color: var(--text);
    font-weight: 600;
    letter-spacing: .02em;
  }
  .footer-col p { margin: 0; font-size: 14px; line-height: 1.85; color: var(--text-2); }
  .footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
  .footer-col ul a { font-size: 14px; color: var(--text-2); }
  .footer-col ul a:hover { color: var(--primary); }
  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 14px;
    line-height: 1.4;
  }
  .footer-brand .brand-mark { width: 30px; height: 30px; font-size: 13px; }
  .footer-info { font-size: 14px; color: var(--text-2); line-height: 2; }
  .footer-info b { color: var(--text); font-weight: 600; }
  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    padding: 20px 0 28px;
    border-top: 1px solid var(--line);
    font-size: 13px;
    color: var(--text-3);
  }

  /* ---------- 响应式 ---------- */
  @media (min-width: 1024px) {
    .container { padding: 0 32px; }
  }
  @media (max-width: 1023px) {
    .nav-menu { display: none; }
    .nav-cta { display: none; }
    .menu-toggle { display: inline-flex; margin-left: auto; }
    .nav-inner { height: 60px; }
    .rel-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  }
  @media (max-width: 767px) {
    body { font-size: 15px; }
    .section { padding: 56px 0 0; }
    .section-tight { padding: 44px 0 0; }
    .rel-grid { grid-template-columns: minmax(0, 1fr); }
    .nav-pair { grid-template-columns: minmax(0, 1fr); }
    .cta-band { padding: 32px 22px; border-radius: 16px; }
    .cta-band::after { opacity: .25; }
    .article-body h2 { font-size: 22px; }
    .article-body h3 { font-size: 18px; }
    .faq-q { font-size: 16px; }
    .faq-a-inner { padding-right: 10px; }
    .site-footer { margin-top: 64px; }
    .footer-cols { grid-template-columns: minmax(0, 1fr); padding: 44px 0 28px; gap: 28px; }
    .footer-bottom { font-size: 12px; }
  }
  @media (max-width: 520px) {
    .article-head h1 { font-size: 23px; }
    .meta-row { gap: 6px 12px; }
    .btn { width: 100%; }
    .cta-actions { flex-direction: column; }
    .link-arrow { font-size: 13px; }
  }

  @media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
  }

/* roulang page: category1 */
:root{
  --bg:#0A0C10;
  --panel:#12161C;
  --panel-2:#171C24;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --primary:#C6FF3D;
  --accent:#2BE3D2;
  --hot:#FF3D7F;
  --text:#E8EDF2;
  --text-2:#9AA6B2;
  --text-3:#6B7683;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-input:10px;
  --shadow:0 10px 40px -20px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(198,255,61,.35), 0 0 28px -6px rgba(198,255,61,.45);
  --ease:cubic-bezier(.4,0,.2,1);
  --section:88px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.01em;line-height:1.25;}
p{color:var(--text-2);}
::selection{background:rgba(198,255,61,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0B0E13;}
::-webkit-scrollbar-thumb{background:#222A34;border-radius:999px;border:2px solid #0B0E13;}
::-webkit-scrollbar-thumb:hover{background:#2E3947;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.04em;}
.section{padding:var(--section) 0;}
.section-head{margin-bottom:40px;max-width:820px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;}
.section-head p{margin-top:12px;font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--primary),rgba(198,255,61,0));border-radius:2px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,16,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(198,255,61,.85),rgba(43,227,210,.35) 35%,rgba(198,255,61,0) 78%);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(198,255,61,.9),rgba(43,227,210,.75));
  color:#08110B;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 22px -6px rgba(198,255,61,.7);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text b{font-size:15px;letter-spacing:.1em;color:var(--text);}
.logo-text small{font-size:11.5px;color:var(--text-3);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;margin-left:auto;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:72px;
  margin:0 13px;font-size:14.5px;color:var(--text-2);
  transition:color .2s var(--ease);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(198,255,61,0));
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-menu a:hover{color:var(--text);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--primary);text-shadow:0 0 14px rgba(198,255,61,.45);}
.nav-menu a.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(198,255,61,.55);}
.header-cta{margin-left:22px;flex:0 0 auto;}

.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border:1px solid var(--line-strong);border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--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);}

.mobile-panel{
  display:none;border-top:1px solid var(--line);
  background:rgba(12,15,20,.98);padding:8px 0 18px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 20px;
  font-size:15px;color:var(--text-2);border-left:3px solid transparent;
}
.mobile-panel a.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(198,255,61,.05);}
.mobile-panel .mobile-cta{margin:14px 20px 0;}
.mobile-panel .mobile-cta .btn{width:100%;justify-content:center;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;line-height:1.2;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  border:1px solid transparent;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--primary);color:#0A1005;box-shadow:0 0 0 1px rgba(198,255,61,.2);}
.btn-primary:hover{background:#D6FF66;box-shadow:var(--glow);}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:rgba(255,255,255,.02);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:var(--radius-pill);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14.5px;font-weight:600;transition:transform .2s var(--ease),color .2s var(--ease);
}
.link-arrow:hover{transform:translateX(3px);color:#D6FF66;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12.5px;line-height:1.6;letter-spacing:.02em;
  border:1px solid transparent;white-space:nowrap;
}
.badge-primary{color:var(--primary);background:rgba(198,255,61,.12);border-color:rgba(198,255,61,.35);}
.badge-accent{color:var(--accent);background:rgba(43,227,210,.12);border-color:rgba(43,227,210,.32);}
.badge-hot{color:var(--hot);background:rgba(255,61,127,.12);border-color:rgba(255,61,127,.32);}
.badge-mute{color:var(--text-2);background:rgba(255,255,255,.05);border-color:var(--line);}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.34;filter:saturate(.7);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,16,.86) 0%,rgba(10,12,16,.94) 62%,var(--bg) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:74px 20px 66px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.page-hero h1{
  font-size:clamp(26px,3.7vw,42px);font-weight:800;letter-spacing:-.02em;line-height:1.18;
  max-width:900px;
}
.page-hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{margin-top:18px;max-width:720px;font-size:16.5px;color:var(--text-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:40px;padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-stat b{display:block;font-size:24px;font-weight:700;color:var(--primary);}
.hero-stat span{font-size:13px;color:var(--text-3);}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--text-3);opacity:.6;}
.crumb a:hover{color:var(--accent);}
.crumb .current{color:var(--primary);}

/* ---------- checklist panel ---------- */
.checklist-wrap{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.checklist-head{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:22px 26px;border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(198,255,61,.07),rgba(43,227,210,.03) 55%,transparent);
}
.checklist-head h3{font-size:18px;}
.checklist-head .hint{font-size:13px;color:var(--text-3);}
.checklist-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
.check-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:18px 26px;border-bottom:1px solid var(--line);
}
.check-row:nth-child(odd){border-right:1px solid var(--line);}
.check-label{display:flex;gap:12px;font-size:14.5px;color:var(--text-2);}
.check-label i{
  flex:0 0 auto;width:20px;height:20px;margin-top:4px;border-radius:6px;
  border:1px solid rgba(198,255,61,.45);display:grid;place-items:center;
  font-size:11px;color:var(--primary);font-style:normal;
}
.check-value{font-size:14px;color:var(--text);white-space:nowrap;text-align:right;}

/* ---------- zigzag ---------- */
.zz-list{display:flex;flex-direction:column;gap:28px;}
.zz-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:52px;align-items:center;
  padding:34px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(23,28,36,.9),rgba(18,22,28,.9));
  box-shadow:var(--shadow);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.zz-row:hover{border-color:rgba(198,255,61,.32);box-shadow:0 0 0 1px rgba(198,255,61,.18),0 18px 50px -30px rgba(198,255,61,.4);transform:translateY(-3px);}
.zz-row.reverse .zz-media{order:2;}
.zz-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);}
.zz-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);}
.zz-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,16,0) 40%,rgba(10,12,16,.55));
  pointer-events:none;
}
.zz-num{
  font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--primary);
  display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;
}
.zz-num::after{content:"";width:38px;height:1px;background:linear-gradient(90deg,var(--primary),rgba(198,255,61,0));}
.zz-body h3{font-size:21px;margin-bottom:12px;}
.zz-body > p{font-size:15.5px;}
.zz-points{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.zz-points li{
  position:relative;padding-left:20px;font-size:14.8px;color:var(--text-2);line-height:1.75;
}
.zz-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:rgba(198,255,61,.85);box-shadow:0 0 10px rgba(198,255,61,.5);
}

/* ---------- hint table ---------- */
.hint-list{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:var(--panel);box-shadow:var(--shadow);
}
.hint-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr) 150px;
  gap:20px;align-items:center;padding:20px 26px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);font-size:14.8px;
}
.hint-row:last-child{border-bottom:0;}
.hint-row:hover{background:rgba(255,255,255,.025);}
.hint-row .t{color:var(--text);font-weight:600;}
.hint-row .d{color:var(--text-2);font-size:14.5px;}
.hint-row .s{text-align:right;}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px 22px 0;text-align:left;font-size:17px;font-weight:600;
  color:var(--text);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-item.open .faq-q{color:var(--primary);}
.faq-item::before{
  content:"";position:absolute;left:-16px;top:22px;bottom:22px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .24s var(--ease);
  box-shadow:0 0 14px rgba(198,255,61,.6);
}
.faq-item.open::before{opacity:1;}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);
  transform:translate(-50%,-50%);transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-icon::before{width:10px;height:1.5px;}
.faq-icon::after{width:1.5px;height:10px;}
.faq-item.open .faq-icon{border-color:rgba(198,255,61,.6);}
.faq-item.open .faq-icon::before{background:var(--primary);}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a-inner{padding:0 40px 24px 0;font-size:15.5px;color:var(--text-2);}
.faq-a-inner p{font-size:15.5px;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(23,28,36,.95),rgba(13,16,21,.98));
  padding:52px 44px;box-shadow:var(--shadow);
}
.cta-band::before,
.cta-band::after{
  content:"";position:absolute;width:1px;height:180%;top:-40%;
  background:linear-gradient(180deg,rgba(198,255,61,0),rgba(198,255,61,.75),rgba(198,255,61,0));
  transform:rotate(18deg);opacity:.5;
}
.cta-band::before{left:22%;}
.cta-band::after{left:34%;opacity:.22;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);position:relative;z-index:2;}
.cta-band p{margin-top:14px;max-width:640px;position:relative;z-index:2;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;position:relative;z-index:2;}
.cta-meta{margin-top:26px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);position:relative;z-index:2;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;margin-top:var(--section);
  background:#0B0E13;border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,rgba(198,255,61,.8),rgba(43,227,210,.3) 40%,rgba(198,255,61,0) 85%);
}
.footer-cols{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px;
  padding:60px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(198,255,61,.9),rgba(43,227,210,.75));
  color:#08110B;font-weight:800;font-size:13px;
}
.footer-brand span:last-child{font-size:14.5px;font-weight:600;color:var(--text);}
.footer-col p{font-size:14px;color:var(--text-2);max-width:360px;}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text);margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.footer-col ul a:hover{color:var(--primary);}
.footer-info{font-size:13.5px;color:var(--text-2);line-height:2;}
.footer-info b{color:var(--text);font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 34px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-menu a{margin:0 9px;font-size:13.8px;}
  .header-cta{margin-left:14px;}
}
@media (max-width:1024px){
  :root{--section:72px;}
  .nav-menu,.header-cta{display:none;}
  .nav-toggle{display:flex;}
  .zz-row{grid-template-columns:1fr;gap:26px;padding:26px;}
  .zz-row.reverse .zz-media{order:0;}
  .checklist-grid{grid-template-columns:1fr;}
  .check-row:nth-child(odd){border-right:0;}
  .hint-row{grid-template-columns:1fr;gap:8px;}
  .hint-row .s{text-align:left;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px;}
}
@media (max-width:768px){
  :root{--section:56px;}
  .page-hero-inner{padding:52px 20px 48px;}
  .hero-stats{gap:24px;margin-top:30px;}
  .hero-stat b{font-size:20px;}
  .cta-band{padding:36px 24px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .faq-item::before{left:-10px;}
  .faq-a-inner{padding-right:16px;}
  .footer-cols{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .zz-num{font-size:12px;}
  .badge{font-size:11.8px;}
}

/* roulang page: category2 */
:root{
  --bg:#0A0C10;
  --panel:#12161C;
  --panel-2:#171C24;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --primary:#C6FF3D;
  --accent:#2BE3D2;
  --hot:#FF3D7F;
  --text:#E8EDF2;
  --text-2:#9AA6B2;
  --text-3:#6B7683;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --shadow:0 10px 40px -20px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(198,255,61,.35), 0 0 28px -6px rgba(198,255,61,.45);
  --ease:cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease)}
p{margin:0 0 18px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.02em}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(198,255,61,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0C0F14}
::-webkit-scrollbar-thumb{background:#242A33;border-radius:999px;border:2px solid #0C0F14}
::-webkit-scrollbar-thumb:hover{background:#31394a}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,16,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--primary) 0%,rgba(43,227,210,.5) 32%,rgba(10,12,16,0) 72%);
  pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:18px;height:60px}
@media (min-width:1024px){.header-inner{height:72px;gap:24px}}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-size:13px;font-weight:800;letter-spacing:.06em;color:#06080B;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 24px -8px rgba(198,255,61,.75);
}
.brand-text strong{display:block;font-size:14.5px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.1em}
@media (max-width:400px){.brand-text em{display:none}}
.nav-menu{display:none;align-items:center;gap:2px;margin-left:auto}
@media (min-width:1024px){.nav-menu{display:flex}}
.nav-menu a{
  position:relative;padding:10px 9px;font-size:13.5px;color:var(--text-2);border-radius:8px;white-space:nowrap;
}
@media (min-width:1280px){.nav-menu a{padding:10px 12px;font-size:14px}}
.nav-menu a::after{
  content:"";position:absolute;left:9px;right:9px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--primary);text-shadow:0 0 12px rgba(198,255,61,.5)}
.nav-menu a.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(198,255,61,.65)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
@media (min-width:1024px){.header-actions{margin-left:16px}}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
}
@media (min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);margin:2.5px 0;border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-4px) rotate(-45deg)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(10,12,16,.98)}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);border-left:3px solid transparent;
}
.mobile-panel a:hover{color:var(--text);background:rgba(255,255,255,.02)}
.mobile-panel a.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(198,255,61,.05)}
@media (min-width:1024px){.mobile-panel{display:none!important}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;font-size:15px;font-weight:600;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#07090C;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(198,255,61,.6),0 0 36px -4px rgba(198,255,61,.8)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:999px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-arrow:hover{transform:translateX(2px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;border:1px solid transparent;line-height:1.7;
}
.badge-lime{color:var(--primary);background:rgba(198,255,61,.12);border-color:rgba(198,255,61,.35)}
.badge-accent{color:var(--accent);background:rgba(43,227,210,.12);border-color:rgba(43,227,210,.32)}
.badge-hot{color:var(--hot);background:rgba(255,61,127,.12);border-color:rgba(255,61,127,.3)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:44px 0 52px}
@media (min-width:1024px){.page-hero{padding:64px 0 72px}}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,16,.86) 0%,rgba(10,12,16,.93) 55%,rgba(10,12,16,.98) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(198,255,61,.16) 0 2px,transparent 2px 100%),
                   linear-gradient(115deg,rgba(43,227,210,.1) 0 1px,transparent 1px 100%);
  background-size:520px 520px,340px 340px;
  background-position:-60px -140px,180px -220px;
  opacity:.5;pointer-events:none;
}
.hero-content{position:relative;z-index:2}
.breadcrumb{margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.6}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary)}
.page-hero h1{
  font-size:clamp(28px,5.2vw,44px);font-weight:800;line-height:1.16;letter-spacing:-.02em;
  margin:16px 0 18px;max-width:900px;
}
.page-hero h1 .hl{color:var(--primary)}
.hero-sub{max-width:720px;font-size:16px;color:var(--text-2);margin:0 0 8px}
.hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:30px;max-width:760px}
@media (min-width:720px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{
  padding:14px 16px;border:1px solid var(--line);border-radius:12px;
  background:rgba(18,22,28,.78);
}
.stat span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.08em}
.stat b{display:block;font-size:19px;font-weight:700;color:var(--primary);margin-top:2px;font-variant-numeric:tabular-nums}
.stat.is-accent b{color:var(--accent)}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-tight{padding:48px 0}
@media (min-width:1024px){.section-tight{padding:64px 0}}
.section-head{max-width:760px;margin-bottom:32px}
.section-head .eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--accent);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:clamp(22px,3.4vw,32px);font-weight:700;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
.divider{height:1px;background:linear-gradient(90deg,rgba(198,255,61,.5),rgba(255,255,255,.06) 40%,transparent);border:none;margin:0}

/* ---------- 文档式布局 ---------- */
.doc-layout{display:grid;gap:28px}
@media (min-width:1024px){.doc-layout{grid-template-columns:264px minmax(0,1fr);gap:48px;align-items:start}}
.doc-side{position:relative}
@media (min-width:1024px){.doc-side{position:sticky;top:96px}}
.toc{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
  padding:20px;box-shadow:var(--shadow);
}
.toc h2{font-size:13px;letter-spacing:.14em;color:var(--text-3);font-weight:700;margin-bottom:14px}
.toc ol{counter-reset:toc}
.toc li{counter-increment:toc;border-top:1px solid var(--line)}
.toc li:first-child{border-top:none}
.toc a{
  display:flex;gap:10px;align-items:baseline;padding:11px 0;font-size:14px;color:var(--text-2);
}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-size:11.5px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.toc a:hover{color:var(--primary)}
.toc a:hover::before{color:var(--primary)}
.toc-note{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:12.5px;color:var(--text-3);line-height:1.75;
}

.doc-list{border-top:1px solid var(--line)}
.doc-row{
  display:flex;align-items:flex-start;gap:16px;padding:20px 6px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease),padding-left .2s var(--ease);
}
.doc-row:hover{background:rgba(255,255,255,.022);padding-left:14px}
.doc-row .num{
  flex:0 0 auto;font-size:13px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;padding-top:3px;min-width:26px;
}
.doc-row .body{min-width:0}
.doc-row h3{font-size:17px;font-weight:600;margin-bottom:6px}
.doc-row p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75}
.doc-row .arrow{
  margin-left:auto;flex:0 0 auto;color:var(--text-3);font-size:16px;padding-top:2px;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.doc-row:hover .arrow{color:var(--primary);transform:translateX(4px)}

/* ---------- 锚点内容区块 ---------- */
.anchor-block{padding-top:44px}
.anchor-block:first-of-type{padding-top:0}
.anchor-block > h2{
  font-size:clamp(20px,2.8vw,26px);font-weight:700;padding-left:14px;position:relative;margin-bottom:16px;
}
.anchor-block > h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),rgba(43,227,210,.5));
  box-shadow:0 0 14px -2px rgba(198,255,61,.7);
}
.anchor-block p{color:var(--text-2);font-size:15.5px;max-width:760px}
.point-list{margin:18px 0 0;display:grid;gap:10px}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.75}
.point-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px -1px rgba(198,255,61,.8);
}
.point-list li b{color:var(--text);font-weight:600}

.doc-figure{
  display:grid;gap:20px;margin:24px 0 8px;padding:20px;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
}
@media (min-width:768px){.doc-figure{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center}}
.doc-figure img{aspect-ratio:16/10;object-fit:cover;width:100%;border:1px solid var(--line)}
.doc-figure figcaption{font-size:13.5px;color:var(--text-3);margin-top:10px}
.doc-figure .fig-text h3{font-size:18px;font-weight:600;margin-bottom:10px}
.doc-figure .fig-text p{font-size:14.5px;margin:0}

/* ---------- 参数行组 ---------- */
.spec-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
  padding:8px 22px;box-shadow:var(--shadow);
}
.spec-grid{display:grid;gap:0 44px}
@media (min-width:1024px){.spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:15px 0;border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:none}
.spec-row dt{font-size:14px;color:var(--text-2);flex:0 0 auto}
.spec-row dd{margin:0;font-size:14.5px;font-weight:600;text-align:right;color:var(--text)}
.spec-row dd.mono{color:var(--primary);font-variant-numeric:tabular-nums}
.spec-row dd.muted{color:var(--text-2);font-weight:500}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 44px 20px 16px;font-size:17px;font-weight:600;
  transition:color .2s var(--ease),background-color .2s var(--ease),padding-left .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--text-3);line-height:1;transition:color .2s var(--ease),transform .2s var(--ease);
}
.faq details[open] summary::after{content:"−";color:var(--primary)}
.faq summary:hover{color:var(--primary);background:rgba(255,255,255,.02);padding-left:22px}
.faq details[open] summary{color:var(--primary);padding-left:22px}
.faq details[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px -2px rgba(198,255,61,.8);
}
.faq .answer{padding:0 44px 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:760px}
.faq .answer p:last-child{margin-bottom:0}

/* ---------- CTA 下载 ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(160deg,var(--panel-2) 0%,#0D1116 68%);
  padding:40px 24px;box-shadow:var(--shadow);
}
@media (min-width:1024px){.cta-band{padding:56px 48px}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(198,255,61,.22) 0 2px,transparent 2px 100%),
                   linear-gradient(115deg,rgba(43,227,210,.12) 0 1px,transparent 1px 100%);
  background-size:460px 460px,300px 300px;
  background-position:-40px 20px,240px -60px;
  opacity:.45;pointer-events:none;
}
.cta-band .cta-inner{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,3.2vw,30px);font-weight:700;margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:640px;margin-bottom:26px}
.plat-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:640px){.plat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.plat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.plat-btn{
  display:flex;flex-direction:column;gap:4px;align-items:flex-start;
  padding:18px 20px;border-radius:14px;border:1px solid var(--line-strong);
  background:rgba(18,22,28,.85);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.plat-btn strong{font-size:15.5px;font-weight:700}
.plat-btn span{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.plat-btn:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:var(--glow)}
.plat-btn:hover span{color:var(--text-2)}
.plat-btn.is-primary{background:var(--primary);border-color:var(--primary);color:#07090C;box-shadow:var(--glow)}
.plat-btn.is-primary span{color:rgba(7,9,12,.72)}
.plat-btn.is-primary:hover{box-shadow:0 0 0 1px rgba(198,255,61,.6),0 0 36px -4px rgba(198,255,61,.85)}
.cta-foot{margin-top:22px;font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:56px;padding:52px 0 28px;
  background:#080A0E;border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.4) 45%,rgba(8,10,14,0) 85%);
}
.footer-cols{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-cols{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;margin-bottom:14px}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.85;margin:0;max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:var(--text-2);margin-bottom:14px;font-weight:700}
.footer-col ul{display:grid;gap:9px}
.footer-col ul a{font-size:13.5px;color:var(--text-3)}
.footer-col ul a:hover{color:var(--primary)}
.footer-info{font-size:13.5px;color:var(--text-3);line-height:2}
.footer-info b{color:var(--text-2);font-weight:600}
.footer-info b.mono{color:var(--primary)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:var(--text-3);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;gap:24px}}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg:#0A0C10;
  --panel:#12161C;
  --panel-2:#171C24;
  --line:rgba(255,255,255,.08);
  --primary:#C6FF3D;
  --accent:#2BE3D2;
  --hot:#FF3D7F;
  --text:#E8EDF2;
  --text-2:#9AA6B2;
  --text-3:#6B7683;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow:0 10px 40px -20px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(198,255,61,.35), 0 0 28px -6px rgba(198,255,61,.45);
  --ease:cubic-bezier(.4,0,.2,1);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:24px 24px;
}
header,main,footer{position:relative;z-index:1}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 18px}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(198,255,61,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0C1014}
::-webkit-scrollbar-thumb{background:#222A34;border-radius:8px;border:2px solid #0C1014}
::-webkit-scrollbar-thumb:hover{background:#33404D}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.04em}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,16,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(198,255,61,.05) 55%,transparent);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(198,255,61,.95),rgba(43,227,210,.85));
  color:#080A0D;font-weight:800;font-size:15px;letter-spacing:.06em;
  box-shadow:var(--glow);
}
.brand-text b{display:block;font-size:15px;font-weight:700;line-height:1.25;white-space:nowrap}
.brand-text i{display:block;font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.1em}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-menu a{
  position:relative;padding:10px 12px;font-size:14px;color:var(--text-2);
  border-radius:8px;transition:color .2s var(--ease);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--primary);text-shadow:0 0 12px rgba(198,255,61,.45)}
.nav-menu a.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(198,255,61,.7)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);color:var(--text);font-size:20px;
  align-items:center;justify-content:center;transition:all .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.header-cta{margin-left:8px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .2s var(--ease);cursor:pointer;
}
.btn-primary{background:var(--primary);color:#0A0C10;box-shadow:0 0 0 1px rgba(198,255,61,.28)}
.btn-primary:hover{background:#D6FF6A;box-shadow:var(--glow);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14px;font-weight:600;transition:transform .2s var(--ease)}
.link-arrow:hover{transform:translateX(2px);color:var(--primary)}

/* ===== Badges ===== */
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;border:1px solid;
}
.pill-lime{color:var(--primary);border-color:rgba(198,255,61,.35);background:rgba(198,255,61,.12)}
.pill-cyber{color:var(--accent);border-color:rgba(43,227,210,.35);background:rgba(43,227,210,.12)}
.pill-hot{color:var(--hot);border-color:rgba(255,61,127,.35);background:rgba(255,61,127,.12)}

/* ===== Section base ===== */
.section{padding:var(--sec) 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{font-size:30px;font-weight:700;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;font-weight:700;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--accent)}

/* ===== Page hero ===== */
.page-hero{position:relative;overflow:hidden;padding:64px 0 56px;border-bottom:1px solid var(--line)}
.page-hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-1.png) center/cover no-repeat;opacity:.34}
.page-hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,16,.62) 0%,rgba(10,12,16,.9) 62%,rgba(10,12,16,.98) 100%);
}
.page-hero .container{position:relative}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px}
.crumbs a{color:var(--text-2);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3);opacity:.6}
.crumbs .current{color:var(--primary)}
.page-hero h1{font-size:38px;font-weight:800;letter-spacing:-.02em;line-height:1.18;margin:14px 0 16px;max-width:900px}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.page-hero .lead{color:var(--text-2);font-size:16px;max-width:700px;margin:0 0 26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:13px;color:var(--text-3)}
.hero-meta b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}
@media (max-width:767px){
  .page-hero{padding:44px 0 40px}
  .page-hero h1{font-size:27px}
}

/* ===== Timeline ===== */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:56px}
.timeline::before{
  content:"";position:absolute;left:21px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(198,255,61,0),rgba(198,255,61,.85) 10%,rgba(43,227,210,.6) 82%,rgba(43,227,210,0));
}
.tl-item{position:relative;padding-bottom:44px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-41px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(198,255,61,.12),0 0 18px rgba(198,255,61,.65);
}
.tl-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 26px 22px;box-shadow:var(--shadow);transition:all .25s var(--ease);
}
.tl-card:hover{border-color:rgba(198,255,61,.35);transform:translateY(-3px);box-shadow:var(--glow)}
.tl-num{
  font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.14em;
  font-variant-numeric:tabular-nums;margin-bottom:8px;
}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.tl-card p{color:var(--text-2);font-size:15px;margin:0}
.tl-figure{margin-top:18px;border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:linear-gradient(120deg,rgba(198,255,61,.1),rgba(43,227,210,.08))}
.tl-figure img{width:100%;height:100%;object-fit:cover}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
@media (max-width:767px){
  .timeline{padding-left:36px}
  .timeline::before{left:13px}
  .tl-dot{left:-29px}
  .tl-card{padding:20px 18px 18px}
}

/* ===== Spec rows ===== */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
@media (max-width:1023px){.spec-grid{grid-template-columns:1fr}}
.spec-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 24px;box-shadow:var(--shadow);
}
.spec-card h3{font-size:17px;font-weight:600;padding:20px 0 14px;border-bottom:1px solid var(--line)}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:none}
.spec-row .k{color:var(--text-2);font-size:14px}
.spec-row .v{color:var(--text);font-weight:600;font-size:14px;font-variant-numeric:tabular-nums;text-align:right}
.spec-row .v.lime{color:var(--primary)}

/* ===== Info cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media (max-width:1279px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:767px){.card-grid{grid-template-columns:1fr}}
.card{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);overflow:hidden;transition:all .25s var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.35),transparent);
  opacity:.75;
}
.card:hover{border-color:rgba(198,255,61,.35);transform:translateY(-4px);box-shadow:var(--glow)}
.card h3{font-size:18px;font-weight:600;margin:6px 0 10px}
.card p{color:var(--text-2);font-size:14.5px;margin:0}

/* ===== Bullet list ===== */
.row-list{border-top:1px solid var(--line)}
.row-item{
  display:flex;align-items:flex-start;gap:18px;padding:22px 8px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.row-item:hover{background:rgba(255,255,255,.025)}
.row-item .idx{
  flex-shrink:0;width:44px;font-size:14px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;padding-top:2px;
}
.row-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.row-item p{color:var(--text-2);font-size:14.5px;margin:0}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;
  background:var(--primary);opacity:0;transition:opacity .24s var(--ease);
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;
  padding:22px 8px;text-align:left;font-size:18px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  display:grid;place-items:center;font-size:15px;line-height:1;color:var(--text-2);
  transition:all .24s var(--ease);
}
.faq-item.is-open .faq-icon{border-color:var(--primary);color:var(--primary);transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 46px 22px 8px;color:var(--text-2);font-size:15px;margin:0}

/* ===== CTA ===== */
.cta-panel{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:22px;
  background:var(--panel-2);padding:52px 44px;box-shadow:var(--shadow);
}
.cta-panel .speed{position:absolute;top:-30%;width:1px;height:160%;background:linear-gradient(180deg,transparent,rgba(198,255,61,.65),transparent);transform:rotate(20deg)}
.cta-panel .speed.s1{left:12%}
.cta-panel .speed.s2{left:30%;opacity:.5;background:linear-gradient(180deg,transparent,rgba(43,227,210,.6),transparent)}
.cta-panel .speed.s3{left:76%;opacity:.4}
.cta-inner{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
@media (max-width:1023px){.cta-inner{grid-template-columns:1fr;gap:28px}.cta-panel{padding:36px 22px}}
.cta-inner h2{font-size:30px;font-weight:700;margin-bottom:14px}
.cta-inner p{color:var(--text-2);font-size:15px;margin:0}
.dl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (max-width:520px){.dl-grid{grid-template-columns:1fr}}
.dl-btn{
  display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:var(--radius-card);
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.02);
  transition:all .2s var(--ease);
}
.dl-btn:hover{border-color:var(--primary);transform:translateY(-2px)}
.dl-btn .name{font-size:15px;font-weight:600;color:var(--text)}
.dl-btn .meta{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.dl-btn.is-primary{background:var(--primary);border-color:var(--primary)}
.dl-btn.is-primary .name,.dl-btn.is-primary .meta{color:#0A0C10}
.dl-btn.is-primary:hover{box-shadow:var(--glow)}
.cta-note{margin-top:26px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{
  margin-top:20px;border-top:1px solid var(--line);background:#080A0E;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.4) 40%,transparent);
}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.1fr;gap:36px;padding:56px 0 36px}
@media (max-width:1023px){.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}}
@media (max-width:600px){.footer-cols{grid-template-columns:1fr;padding:40px 0 26px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-weight:700;font-size:15px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px}
.footer-col p{color:var(--text-3);font-size:13.5px;line-height:1.85;margin:0;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px;color:var(--text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--text-2);font-size:13.5px;transition:color .2s var(--ease)}
.footer-col ul a:hover{color:var(--primary)}
.footer-info{color:var(--text-3);font-size:13.5px;line-height:2}
.footer-info b{color:var(--text-2);font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 28px;border-top:1px solid var(--line);color:var(--text-3);font-size:12.5px;
}
@media (max-width:767px){
  :root{--sec:56px}
  .header-inner{height:60px}
  .page-hero h1{font-size:26px}
  .section-head h2{font-size:23px}
  .cta-inner h2{font-size:23px}
}

/* ===== Mobile nav ===== */
@media (max-width:1023px){
  .nav-menu{
    position:fixed;top:60px;left:0;right:0;margin:0;flex-direction:column;align-items:stretch;gap:0;
    background:#0C1014;border-bottom:1px solid var(--line);
    padding:8px 0 16px;max-height:calc(100vh - 60px);overflow:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .nav-menu.is-open{opacity:1;visibility:visible;transform:none}
  .nav-menu a{height:48px;display:flex;align-items:center;padding:0 20px;font-size:15px;border-radius:0}
  .nav-menu a::after{display:none}
  .nav-menu a.is-active{background:rgba(198,255,61,.06);box-shadow:inset 3px 0 0 var(--primary)}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-cta{display:none}
  .brand-text b{font-size:13.5px;white-space:normal;max-width:180px}
  .brand-text i{display:none}
}

/* roulang page: category4 */
:root{
  --bg:#0A0C10;
  --panel:#12161C;
  --panel-2:#171C24;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --primary:#C6FF3D;
  --accent:#2BE3D2;
  --hot:#FF3D7F;
  --text:#E8EDF2;
  --text-2:#9AA6B2;
  --text-3:#6B7683;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow:0 10px 40px -20px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(198,255,61,.35), 0 0 28px -6px rgba(198,255,61,.45);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(198,255,61,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0d1015}
::-webkit-scrollbar-thumb{background:#242b35;border-radius:999px;border:2px solid #0d1015}
::-webkit-scrollbar-thumb:hover{background:#33404f}

.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,16,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(198,255,61,0) 62%);
  opacity:.85;pointer-events:none;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#8fd41f);
  color:#0A0C10;font-weight:900;font-size:15px;letter-spacing:.04em;
  box-shadow:0 0 22px -6px rgba(198,255,61,.6);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text b{font-size:15px;font-weight:800;letter-spacing:.06em;color:var(--text)}
.logo-text i{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--primary);text-shadow:0 0 12px rgba(198,255,61,.45)}
.nav-menu a.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(198,255,61,.7)}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;cursor:pointer;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:rgba(12,15,20,.98);
}
.mobile-panel.open{display:block}
.mobile-panel a{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;
  color:var(--text-2);border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--primary);border-left:3px solid var(--primary);padding-left:17px;background:rgba(198,255,61,.05)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:999px}
.btn-primary{background:var(--primary);color:#0A0C10;box-shadow:0 0 22px -10px rgba(198,255,61,.8)}
.btn-primary:hover{background:#d5ff67;box-shadow:0 0 0 1px rgba(198,255,61,.4),0 0 32px -6px rgba(198,255,61,.65)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{
  background:transparent;border:0;color:var(--accent);padding:6px 0;font-size:14.5px;
}
.btn-ghost:hover{transform:translateX(2px);color:var(--primary)}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;line-height:1.6;border:1px solid transparent;letter-spacing:.01em;
}
.badge-primary{color:var(--primary);border-color:rgba(198,255,61,.36);background:rgba(198,255,61,.1)}
.badge-accent{color:var(--accent);border-color:rgba(43,227,210,.34);background:rgba(43,227,210,.1)}
.badge-hot{color:var(--hot);border-color:rgba(255,61,127,.36);background:rgba(255,61,127,.12)}
.badge-muted{color:var(--text-2);border-color:var(--line);background:rgba(255,255,255,.03)}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(1200px 420px at 18% -10%,rgba(198,255,61,.16),transparent 62%),
             linear-gradient(180deg,rgba(10,12,16,.9),rgba(10,12,16,.97));
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:64px}
.breadcrumb{font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary)}
.page-hero h1{
  font-size:34px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 0;max-width:900px;
}
.page-hero h1 em{
  font-style:normal;color:var(--primary);
  text-shadow:0 0 26px rgba(198,255,61,.35);
}
.lead{margin-top:18px;max-width:760px;color:var(--text-2);font-size:16px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.fact{
  display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(18,22,28,.72);
}
.fact b{font-size:15px;color:var(--primary)}
.fact span{font-size:13px;color:var(--text-2)}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:32px}
.section-head h2{font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.section-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}

/* ---------- 筛选标签行 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.filter-tag{
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  background:rgba(18,22,28,.7);color:var(--text-2);font-size:13.5px;
}
.filter-tag.is-on{color:#0A0C10;background:var(--primary);border-color:var(--primary);box-shadow:0 0 22px -8px rgba(198,255,61,.8);font-weight:700}
.filter-tag:hover{color:var(--text);border-color:rgba(198,255,61,.4)}
.filter-tag.is-on:hover{color:#0A0C10}

/* ---------- 瀑布卡片 ---------- */
.masonry{columns:3;column-gap:24px}
@media (max-width:1023px){.masonry{columns:2;column-gap:20px}}
@media (max-width:767px){.masonry{columns:1}}
.qcard{
  break-inside:avoid;margin-bottom:24px;display:block;
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.qcard:hover{transform:translateY(-4px);border-color:rgba(198,255,61,.35);box-shadow:var(--glow)}
.qcard-cover{position:relative;aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line)}
.qcard-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.qcard:hover .qcard-cover img{transform:scale(1.04)}
.qcard-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,16,.05),rgba(10,12,16,.65))}
.qcard-body{padding:20px 20px 22px}
.qcard-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.qcard h3{font-size:18px;font-weight:650;line-height:1.45;letter-spacing:-.005em}
.qcard p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.qcard-meta{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--text-3);
}
.qcard-meta b{color:var(--primary);font-weight:700}
.qcard-more{color:var(--accent);font-size:13px}
.qcard:hover .qcard-more{color:var(--primary)}

/* ---------- 参数行组 ---------- */
.spec-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:1023px){.spec-wrap{grid-template-columns:1fr}}
.spec-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 22px;box-shadow:var(--shadow);
}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:14px;color:var(--text-2)}
.spec-row dd{font-size:15px;font-weight:600;color:var(--text);text-align:right}
.spec-row dd.hl{color:var(--primary)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);position:relative;
  transition:color .2s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:-14px;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .24s var(--ease);
}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q::before{opacity:1}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--accent);font-size:16px;line-height:1;
  transition:transform .24s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.open .faq-icon{color:var(--primary);border-color:rgba(198,255,61,.45);transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{padding:0 4px 22px;color:var(--text-2);font-size:15px;max-width:780px}

/* ---------- 下载 CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:24px;
  background:linear-gradient(160deg,#141a22,#0C1015 70%);
  padding:52px 32px;box-shadow:var(--shadow);
}
.cta-block::before{
  content:"";position:absolute;top:-60%;right:-10%;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,255,61,.16),transparent 68%);
}
.cta-block::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:.6;
}
.cta-lines{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.cta-lines i{
  position:absolute;top:-20%;height:140%;width:1px;
  background:linear-gradient(180deg,transparent,rgba(198,255,61,.5),transparent);
  transform:rotate(18deg);
}
.cta-inner{position:relative;z-index:2}
.cta-block h2{font-size:28px;font-weight:800;letter-spacing:-.02em}
.cta-block p.desc{margin-top:14px;color:var(--text-2);max-width:720px;font-size:15px}
.dl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
@media (max-width:1023px){.dl-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.dl-grid{grid-template-columns:1fr}}
.dl-btn{
  display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:14px;
  border:1px solid var(--line-strong);background:rgba(10,13,18,.65);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.dl-btn:hover{transform:translateY(-3px);border-color:rgba(198,255,61,.45);box-shadow:var(--glow)}
.dl-btn b{font-size:15.5px;font-weight:700}
.dl-btn span{font-size:12.5px;color:var(--text-3)}
.dl-btn.is-main{background:var(--primary);border-color:var(--primary);color:#0A0C10;box-shadow:0 0 30px -10px rgba(198,255,61,.85)}
.dl-btn.is-main span{color:rgba(10,12,16,.66)}
.dl-note{margin-top:22px;font-size:12.5px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;border-top:1px solid var(--line);background:#0B0E13;position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(43,227,210,.35),transparent 78%);
}
.footer-cols{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;gap:36px;
  padding:60px 0 40px;
}
@media (max-width:1023px){.footer-cols{grid-template-columns:1fr 1fr;gap:30px}}
@media (max-width:600px){.footer-cols{grid-template-columns:1fr;padding:44px 0 30px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15.5px;margin-bottom:16px}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#8fd41f);color:#0A0C10;font-weight:900;font-size:13px;
}
.footer-col p{color:var(--text-3);font-size:13.5px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;color:var(--text)}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:13.5px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-info{font-size:13.5px;color:var(--text-3);line-height:2}
.footer-info b{color:var(--text-2)}
.footer-info b.mono{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 30px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
}

@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:block}
  .header-inner{height:60px}
  .section{padding:56px 0}
  .page-hero .container{padding-top:40px;padding-bottom:48px}
  .page-hero h1{font-size:28px}
  .site-footer{margin-top:64px}
}
@media (max-width:520px){
  .page-hero h1{font-size:24px}
  .section-head h2{font-size:22px}
  .cta-block{padding:38px 20px;border-radius:18px}
  .cta-block h2{font-size:22px}
  .logo-text i{display:none}
}