/* roulang page: index */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1322;
  --bg-2:#101A2C;
  --primary:#2EE6C5;
  --primary-deep:#1FA88F;
  --grad-main:linear-gradient(135deg,#2EE6C5 0%,#2F7BFF 100%);
  --accent:#FFC257;
  --text-1:#EAF2FF;
  --text-2:#9BAEC8;
  --text-3:#66799A;
  --line:rgba(120,170,255,0.16);
  --line-strong:rgba(120,170,255,0.30);
  --glass:rgba(255,255,255,0.055);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
  --maxw:1200px;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(46,230,197,.18);border-radius:4px}
::selection{background:rgba(46,230,197,.28);color:#fff}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;height:64px;
  display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,22,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text-1);white-space:nowrap}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px 2px rgba(46,230,197,.7);flex:none}
.nav-right{display:flex;align-items:center;gap:32px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;font-size:14px;letter-spacing:.04em;color:var(--text-2);
  padding:6px 0;transition:color .2s ease;
}
.nav-links a::before{
  content:"";position:absolute;left:-12px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--primary);transform:translateY(-50%) scale(0);transition:transform .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--primary);transition:left .22s ease,right .22s ease;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a.active{color:var(--text-1)}
.nav-links a.active::after{left:0;right:0}
.nav-links a.active::before{transform:translateY(-50%) scale(1)}
.btn-nav{
  height:36px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;font-size:13px;letter-spacing:.04em;color:var(--text-1);
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.btn-nav:hover{border-color:rgba(46,230,197,.5);background:rgba(46,230,197,.08);color:#fff}
.btn-nav:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;transition:border-color .2s;
}
.nav-toggle:hover{border-color:rgba(46,230,197,.5)}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--text-1);transition:transform .2s}
.drawer{
  position:fixed;inset:0;z-index:130;background:rgba(7,12,22,.97);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  display:flex;flex-direction:column;padding:24px;
  transform:translateY(-101%);visibility:hidden;transition:transform .3s ease,visibility .3s;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px}
.drawer-close{width:42px;height:42px;border:1px solid var(--line-strong);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-2)}
.drawer-nav{margin-top:28px;display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{font-size:18px;padding:20px 0;border-bottom:1px solid var(--line);color:var(--text-1)}
.drawer-nav a.active{color:var(--primary)}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:16px}
.drawer-foot .brand{font-size:15px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;letter-spacing:.03em;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,filter .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-main);color:#04121A}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 6px 24px rgba(46,230,197,.28)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.98)}
.btn-ghost{border-color:var(--line-strong);color:var(--text-1);background:transparent}
.btn-ghost:hover{background:rgba(46,230,197,.08);border-color:rgba(46,230,197,.45)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:13.5px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none;box-shadow:none}

/* ---------- hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;padding:132px 0 88px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center;transform:scale(1.02)}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,12,22,.97) 0%,rgba(7,12,22,.90) 38%,rgba(7,12,22,.62) 72%,rgba(7,12,22,.86) 100%);
}
.hero-bg::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(7,12,22,.72) 0%,rgba(7,12,22,0) 34%,rgba(7,12,22,.94) 100%);
}
.hero-inner{position:relative;z-index:3;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid rgba(46,230,197,.32);background:rgba(46,230,197,.08);
  font-size:12.5px;letter-spacing:.08em;color:var(--primary);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px 2px rgba(46,230,197,.6);display:block}
.hero h1{
  font-size:clamp(30px,4.4vw,54px);line-height:1.15;font-weight:700;letter-spacing:-.01em;
  margin-top:24px;color:#fff;
}
.hero-band{width:64px;height:3px;border-radius:2px;background:var(--grad-main);margin:26px 0 22px}
.hero-sub{font-size:18px;line-height:1.7;color:var(--text-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.chip{
  display:inline-flex;align-items:center;gap:10px;height:38px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  font-size:12.5px;letter-spacing:.05em;color:var(--text-2);
}
.chip b{font-family:var(--mono);font-weight:600;color:var(--accent);letter-spacing:.02em}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:64px;z-index:70;
  background:rgba(11,19,34,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;align-items:center;gap:30px;height:54px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:var(--text-3);
  white-space:nowrap;transition:color .2s ease;position:relative;padding:4px 0;
}
.anchor-inner a:hover{color:var(--text-1)}
.anchor-inner a.is-current{color:var(--primary)}

/* ---------- sections ---------- */
.section{padding:var(--sec-pad) 0;position:relative}
.section--alt{background:var(--bg-1)}
.section-head{max-width:760px;margin-bottom:52px}
.section-tag{font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;color:var(--primary);display:block}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:600;margin-top:14px;letter-spacing:-.01em}
.section-desc{color:var(--text-2);margin-top:16px;font-size:15.5px;max-width:680px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- sell ---------- */
.sell-grid{display:grid;grid-template-columns:440px 1fr;gap:64px;align-items:start}
.sell-left{position:sticky;top:150px}
.sell-list{border-top:1px solid var(--line)}
.sell-item{
  display:grid;grid-template-columns:72px 1fr;gap:20px;
  padding:32px 20px 32px 0;border-bottom:1px solid var(--line);
  transition:background .22s ease,padding .22s ease;
}
.sell-item:hover{background:linear-gradient(90deg,rgba(46,230,197,.06),rgba(46,230,197,0));padding-left:16px}
.sell-num{font-family:var(--mono);font-size:19px;color:var(--primary);letter-spacing:.04em;line-height:1.5}
.sell-item h3{font-size:19px;font-weight:600;line-height:1.4;letter-spacing:-.005em}
.sell-item p{color:var(--text-2);font-size:15px;margin-top:10px;line-height:1.8}

/* ---------- demo ---------- */
.demo-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:48px;align-items:start}
.browser{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-2);
  overflow:hidden;box-shadow:0 0 0 1px rgba(255,255,255,.02) inset;
}
.browser-bar{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 16px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);
}
.browser-dots{display:flex;gap:6px;flex:none}
.browser-dots i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.13);display:block}
.browser-url{
  flex:1;height:26px;border-radius:6px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  display:flex;align-items:center;padding:0 12px;
  font-family:var(--mono);font-size:12px;color:var(--text-3);letter-spacing:.03em;overflow:hidden;white-space:nowrap;
}
.browser-body{position:relative;background:var(--bg-1)}
.browser-body img{width:100%;height:auto;filter:saturate(.9)}
.browser-body::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.12) 0%,rgba(7,12,22,.42) 100%);
  pointer-events:none;
}
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.tab{
  height:36px;padding:0 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);letter-spacing:.03em;transition:all .2s ease;
}
.tab:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(46,230,197,.06)}
.tab.is-active{background:rgba(46,230,197,.13);border-color:rgba(46,230,197,.45);color:var(--primary)}
.demo-side{padding-top:8px}
.demo-side h3{font-size:21px;font-weight:600;line-height:1.45}
.demo-side p{color:var(--text-2);font-size:15px;margin-top:14px}
.demo-note{
  margin-top:26px;padding:20px 22px;border-radius:var(--r-card);
  border:1px solid var(--line);border-left:3px solid var(--primary);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  font-size:14.5px;color:var(--text-2);
}

/* ---------- evidence ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat{padding:38px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{
  font-family:var(--mono);font-size:42px;font-weight:700;line-height:1;letter-spacing:-.02em;
  background:var(--grad-main);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:var(--primary);
}
.stat-label{font-size:12.5px;color:var(--text-3);letter-spacing:.06em;margin-top:12px}
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:60px}
.quote{
  position:relative;padding:30px 28px;border-radius:var(--r-card);
  border:1px solid var(--line);border-left:3px solid var(--primary);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.quote:nth-child(2){transform:translateY(28px)}
.quote:nth-child(2):hover{transform:translateY(24px)}
.quote:hover{border-color:var(--line-strong);box-shadow:0 6px 24px rgba(46,230,197,.18)}
.quote p{font-size:15.5px;line-height:1.85;color:var(--text-1)}
.quote span{display:block;margin-top:18px;font-size:13px;color:var(--text-3);letter-spacing:.06em}

/* ---------- price ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:start}
.price-card{
  position:relative;padding:34px 28px 30px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-2);overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.price-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--grad-main);opacity:.45;transition:opacity .22s ease;
}
.price-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 6px 24px rgba(46,230,197,.18)}
.price-card:hover::before{opacity:1}
.price-card--featured{margin-top:-8px;border-color:rgba(46,230,197,.35);background:linear-gradient(180deg,rgba(46,230,197,.06),rgba(16,26,44,1) 42%)}
.price-card--featured::before{opacity:1}
.price-flag{
  position:absolute;top:14px;right:14px;height:24px;padding:0 10px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;font-size:11.5px;letter-spacing:.08em;
  background:rgba(255,194,87,.14);border:1px solid rgba(255,194,87,.4);color:var(--accent);
}
.price-name{font-size:19px;font-weight:600;letter-spacing:-.005em}
.price-amount{font-family:var(--mono);font-size:36px;font-weight:700;color:var(--accent);line-height:1.15;margin-top:16px;letter-spacing:-.02em}
.price-amount em{font-style:normal;font-size:14px;color:var(--text-3);margin-left:8px;letter-spacing:.06em}
.price-meta{font-size:14px;color:var(--text-2);margin-top:10px;min-height:44px}
.price-list{margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}
.price-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);margin-top:13px;line-height:1.7}
.price-list li:first-child{margin-top:0}
.price-list li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);opacity:.75;
}
.price-card .btn{margin-top:26px}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;text-align:left;font-size:16.5px;font-weight:600;color:var(--text-1);
  line-height:1.55;transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.plus{position:relative;width:18px;height:18px;flex:none;transition:transform .26s ease}
.plus::before,.plus::after{content:"";position:absolute;background:var(--text-3);transition:background .26s ease}
.plus::before{left:50%;top:0;width:1.5px;height:100%;transform:translateX(-50%)}
.plus::after{top:50%;left:0;height:1.5px;width:100%;transform:translateY(-50%)}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-item.is-open .plus::before,.faq-item.is-open .plus::after{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{padding:0 60px 26px 0;color:var(--text-2);font-size:15px;max-width:800px}

/* ---------- latest posts ---------- */
.posts-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.link-more{font-size:14px;color:var(--primary);letter-spacing:.04em;border-bottom:1px solid rgba(46,230,197,.35);padding-bottom:2px;transition:border-color .2s,color .2s}
.link-more:hover{color:#fff;border-bottom-color:#fff}
.lead-card{
  position:relative;display:grid;grid-template-columns:1.05fr 1fr;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-2);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.lead-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-main);opacity:.4;z-index:3;
}
.lead-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 6px 24px rgba(46,230,197,.18)}
.lead-media{position:relative;min-height:280px;overflow:hidden}
.lead-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.92)}
.lead-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,26,44,.1),rgba(16,26,44,.55))}
.lead-body{padding:34px 32px;display:flex;flex-direction:column;gap:16px}
.lead-body h3{font-size:22px;font-weight:600;line-height:1.45;letter-spacing:-.005em;transition:color .2s}
.lead-card:hover .lead-body h3{color:var(--primary)}
.lead-body p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:auto}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(46,230,197,.12);border:1px solid rgba(46,230,197,.35);
  color:var(--primary);font-size:11.5px;letter-spacing:.08em;
}
.meta-time{font-family:var(--mono);font-size:12.5px;color:var(--accent);letter-spacing:.04em}
.card-hit{position:absolute;inset:0;z-index:2;border-radius:inherit}
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:26px}
.mini-card{
  position:relative;display:flex;flex-direction:column;gap:14px;
  padding:24px 22px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.mini-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-main);
  opacity:.22;transition:opacity .22s ease;z-index:3;
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 6px 24px rgba(46,230,197,.18)}
.mini-card:hover::before{opacity:1}
.mini-card h4{font-size:16.5px;font-weight:600;line-height:1.5;transition:color .2s;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card:hover h4{color:var(--primary)}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  max-width:480px;margin:0 auto;padding:52px 28px;text-align:center;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-2);
}
.empty-state p{color:var(--text-2);font-size:15px}
.empty-state .btn{margin-top:22px}

/* ---------- contact ---------- */
.contact-wrap{
  display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start;
}
.contact-points{margin-top:28px;border-top:1px solid var(--line)}
.contact-points li{padding:18px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-2);display:flex;gap:14px;align-items:flex-start}
.contact-points li b{font-family:var(--mono);color:var(--primary);font-weight:600;flex:none}
.form-card{
  padding:34px 30px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-2);position:relative;overflow:hidden;
}
.form-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-main);opacity:.5}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.field{display:flex;flex-direction:column;gap:9px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.04em}
.field input,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-1);
  transition:border-color .2s ease,background .2s ease;
}
.field textarea{height:auto;min-height:124px;padding:12px 14px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{border-color:rgba(46,230,197,.5);background:rgba(46,230,197,.05);outline:none}
.field input:disabled,.field textarea:disabled{opacity:.45;cursor:not-allowed}
.form-card .btn{margin-top:22px}
.form-msg{font-size:13.5px;margin-top:14px;letter-spacing:.03em;color:var(--text-3);min-height:20px}
.form-msg.is-ok{color:var(--primary)}
.form-msg.is-error{color:var(--accent)}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  border-radius:var(--r-pill);background:var(--grad-main);color:#04121A;
  font-size:14.5px;font-weight:700;letter-spacing:.03em;
  box-shadow:0 6px 24px rgba(46,230,197,.28);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s,filter .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{filter:brightness(1.08)}
.float-cta:active{transform:translateY(1px)}
.float-cta i{width:8px;height:8px;border-radius:50%;background:#04121A;display:block;opacity:.7}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:76px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:18px;max-width:320px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:var(--text-3);font-weight:600;margin-bottom:20px}
.footer-col li{margin-bottom:13px}
.footer-col a{font-size:14.5px;color:var(--text-2);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-col span{font-size:14.5px;color:var(--text-2);display:block;line-height:1.8}
.footer-bottom{
  margin-top:60px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{letter-spacing:.04em}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{max-width:1080px}
  .sell-grid{grid-template-columns:400px 1fr;gap:48px}
}
@media (max-width:1024px){
  :root{--sec-pad:72px}
  .nav-links,.btn-nav{display:none}
  .nav-toggle{display:flex}
  .sell-grid{grid-template-columns:1fr;gap:36px}
  .sell-left{position:static}
  .demo-grid{grid-template-columns:1fr;gap:34px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card--featured{margin-top:0}
  .lead-card{grid-template-columns:1fr}
  .lead-media{min-height:220px}
  .mini-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .hero{min-height:76vh;padding:112px 0 64px}
  .hero-sub{font-size:16.5px}
  .anchor-bar{top:64px}
  .quotes{grid-template-columns:1fr;gap:20px;margin-top:44px}
  .quote:nth-child(2){transform:none}
  .quote:nth-child(2):hover{transform:translateY(-4px)}
  .mini-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .faq-a p{padding-right:20px}
  .float-cta{
    left:16px;right:16px;bottom:16px;justify-content:center;height:52px;
    border-radius:var(--r-btn);transform:translateY(90px);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .section-title{font-size:24px}
}
@media (max-width:520px){
  .section{padding:56px 0}
  .hero h1{font-size:30px}
  .hero-chips{gap:8px}
  .chip{font-size:12px;padding:0 12px;height:34px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .price-card,.form-card,.mini-card{padding-left:18px;padding-right:18px}
  .stat{padding:28px 18px}
  .stat-num{font-size:34px}
  .footer-grid{grid-template-columns:1fr}
  .lead-body{padding:26px 20px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1322;
  --bg-2:#101A2C;
  --primary:#2EE6C5;
  --primary-deep:#1FA88F;
  --accent:#FFC257;
  --grad-main:linear-gradient(135deg,#2EE6C5 0%,#2F7BFF 100%);
  --text-1:#EAF2FF;
  --text-2:#9BAEC8;
  --text-3:#66799A;
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(120,170,255,.30);
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.08);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
  --dur:.2s;
  --space:96px;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--text-1);text-decoration:none;transition:color var(--dur) ease,border-color var(--dur) ease,background-color var(--dur) ease}
a:hover{color:var(--primary)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.mono{font-family:var(--mono);letter-spacing:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(46,230,197,.22);border-radius:4px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:64px;
  display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) ease,border-color var(--dur) ease;
}
.site-header.scrolled{
  background:rgba(7,12,22,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:16px;font-weight:600;letter-spacing:.02em;color:var(--text-1);
  white-space:nowrap;
}
.brand .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(46,230,197,.9);
  flex:0 0 auto;
}
.nav-right{display:flex;align-items:center;gap:28px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;
  font-size:14px;letter-spacing:.04em;color:var(--text-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--primary);transform:translateX(-50%);
  transition:width var(--dur) ease;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--text-1)}
.nav-links a.active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--primary);
}
.nav-links a.active::after{width:100%}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.06em;color:var(--text-1);
  transition:background-color var(--dur) ease,border-color var(--dur) ease,transform var(--dur) ease;
}
.btn-nav:hover{background:rgba(46,230,197,.08);border-color:var(--primary);color:var(--primary)}
.btn-nav:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:40px;height:40px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--text-1);transition:transform var(--dur) ease,opacity var(--dur) ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:56px 0 40px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(90deg,rgba(7,12,22,.96) 0%,rgba(11,19,34,.82) 55%,rgba(7,12,22,.96) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.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-3)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3);opacity:.6}
.crumbs .current{color:var(--text-2)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;
  color:var(--primary);
  background:rgba(46,230,197,.12);
  border:1px solid rgba(46,230,197,.35);
}
.badge.amber{color:var(--accent);background:rgba(255,194,87,.12);border-color:rgba(255,194,87,.35)}
.meta-item{font-size:13px;color:var(--text-3)}
.meta-item.mono{font-family:var(--mono)}
.page-head h1{
  font-size:42px;line-height:1.18;font-weight:700;letter-spacing:-.01em;
  max-width:900px;margin-bottom:20px;
}
.head-band{width:64px;height:3px;border-radius:2px;background:var(--grad-main);margin-bottom:22px}
.page-lead{max-width:760px;color:var(--text-2);font-size:16px}

/* ---------- article layout ---------- */
.section{padding:var(--space) 0}
.section.alt{background:var(--bg-1)}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 220px;
  gap:48px;
  align-items:start;
}
.article-body{
  max-width:760px;
  font-size:16px;line-height:1.95;color:var(--text-2);
}
.article-body > * + *{margin-top:1.2em}
.article-body p{color:var(--text-2)}
.article-body h2{
  font-size:26px;line-height:1.35;color:var(--text-1);
  margin-top:48px;padding-left:14px;
  border-left:3px solid var(--primary);
}
.article-body h3{font-size:20px;color:var(--text-1);margin-top:32px}
.article-body strong{color:var(--text-1)}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(46,230,197,.4)}
.article-body a:hover{color:var(--primary-deep);border-bottom-color:var(--primary-deep)}
.article-body ul,.article-body ol{padding-left:22px;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.5em 0}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-card) var(--r-card) 0;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  color:var(--text-1);
}
.article-body img{
  border-radius:12px;border:1px solid var(--line);
  margin:28px 0;
  background:var(--bg-2);
}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);margin-top:10px;text-align:center}
.article-body pre{
  background:#050A13;border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;overflow-x:auto;
  font-family:var(--mono);font-size:14px;line-height:1.7;color:var(--text-1);
}
.article-body code{
  font-family:var(--mono);font-size:14px;
  background:rgba(120,170,255,.10);
  border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;color:var(--primary);
}
.article-body pre code{background:none;border:0;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:28px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--bg-2);color:var(--text-1);font-weight:600}

/* toc */
.toc{
  position:sticky;top:96px;
  padding:20px 18px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.toc h4{font-size:13px;letter-spacing:.1em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.toc ol{list-style:none;padding:0;counter-reset:toc}
.toc li{counter-increment:toc;margin-bottom:10px}
.toc li a{
  display:block;font-size:13.5px;color:var(--text-2);line-height:1.6;
  padding-left:2px;
}
.toc li a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--mono);font-size:11px;color:var(--text-3);
  margin-right:8px;
}
.toc li a:hover{color:var(--primary)}

/* empty state */
.empty-state{
  max-width:480px;margin:0 auto;padding:48px 32px;text-align:center;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--glass);
}
.empty-state h2{font-size:22px;color:var(--text-1);margin-bottom:12px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:500;
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,background-color var(--dur) ease,filter var(--dur) ease,color var(--dur) ease;
}
.btn-primary{
  background:var(--grad-main);color:#04121A;font-weight:600;
  box-shadow:0 0 0 rgba(46,230,197,0);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 6px 24px rgba(46,230,197,.28);color:#04121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  border:1px solid var(--line-strong);color:var(--text-1);background:transparent;
}
.btn-ghost:hover{background:rgba(46,230,197,.08);border-color:var(--primary);color:var(--primary)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* related */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:30px;color:var(--text-1)}
.sec-head p{color:var(--text-2);font-size:15px;margin-top:10px}
.sec-head .more{font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line-strong);padding-bottom:2px}
.sec-head .more:hover{color:var(--primary);border-bottom-color:var(--primary)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  position:relative;
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:transform var(--dur) ease,border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(46,230,197,0),rgba(46,230,197,.85),rgba(47,123,255,0));
  opacity:.45;transition:opacity var(--dur) ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 6px 24px rgba(46,230,197,.18)}
.card:hover::before{opacity:1}
.card-cover{
  border-radius:10px;border:1px solid var(--line);
  aspect-ratio:16/9;object-fit:cover;width:100%;
  margin-bottom:18px;background:var(--bg-2);
}
.card h3{font-size:18px;line-height:1.5;color:var(--text-1);margin-bottom:10px}
.card p{font-size:14px;color:var(--text-2);line-height:1.75}
.card-meta{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:12.5px;color:var(--text-3)}
.card-meta .mono{font-family:var(--mono)}

/* faq */
.faq-list{max-width:860px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;cursor:pointer;list-style:none;
  font-size:17px;color:var(--text-1);font-weight:500;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;
  font-family:var(--mono);font-size:20px;line-height:1;
  color:var(--text-3);
  transition:transform var(--dur) ease,color var(--dur) ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent)}
.faq-item summary:hover{color:var(--primary)}
.faq-item .faq-body{padding:0 0 24px;color:var(--text-2);font-size:15px;max-width:760px}

/* cta band */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:36px 36px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.cta-band h2{font-size:26px;color:var(--text-1);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* float cta */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;gap:10px;align-items:center;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--dur) ease,transform var(--dur) ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta a{
  display:inline-flex;align-items:center;gap:6px;
  height:42px;padding:0 18px;border-radius:var(--r-pill);
  font-size:13.5px;
  background:rgba(16,26,44,.85);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.float-cta a:hover{border-color:var(--primary);color:var(--primary)}
.float-cta a.main{background:var(--grad-main);color:#04121A;border-color:transparent;font-weight:600}
.float-cta a.main:hover{filter:brightness(1.08);color:#04121A}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;margin-bottom:48px}
.footer-brand .brand{margin-bottom:16px;font-size:16px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:var(--text-1);margin-bottom:18px;font-weight:600}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:var(--text-3);line-height:1.75}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding-top:26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{font-family:var(--mono)}

/* mobile drawer */
.nav-drawer{
  position:fixed;inset:64px 0 0;z-index:55;
  background:rgba(7,12,22,.98);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:24px;display:none;
}
.nav-drawer.open{display:block}
.nav-drawer a{
  display:block;padding:18px 0;font-size:18px;color:var(--text-1);
  border-bottom:1px solid var(--line);
}
.nav-drawer a:hover{color:var(--primary)}
.nav-drawer .drawer-foot{margin-top:28px}
.nav-drawer .drawer-foot .btn{width:100%}

@media (max-width:1280px){
  .container{max-width:1080px}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:36px}
  .toc{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-links,.btn-nav{display:none}
  .nav-toggle{display:flex}
  .page-head h1{font-size:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  :root{--space:56px}
  .container{padding:0 20px}
  .page-head{padding:36px 0 30px}
  .page-head h1{font-size:28px}
  .section{padding:56px 0}
  .sec-head h2{font-size:24px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .article-body h2{font-size:22px}
  .float-cta{
    left:12px;right:12px;bottom:12px;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .float-cta a{flex:1;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .card{padding:16px}
  .page-head h1{font-size:24px}
  .brand{font-size:15px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .article-body{font-size:15.5px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1322;
  --bg-2:#101A2C;
  --primary:#2EE6C5;
  --primary-deep:#1FA88F;
  --accent:#FFC257;
  --grad-main:linear-gradient(135deg,#2EE6C5 0%,#2F7BFF 100%);
  --text-1:#EAF2FF;
  --text-2:#9BAEC8;
  --text-3:#66799A;
  --line:rgba(120,170,255,0.16);
  --line-strong:rgba(120,170,255,0.30);
  --glass:rgba(255,255,255,0.055);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-hover:0 6px 24px rgba(46,230,197,0.18);
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --tr:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--tr),border-color var(--tr),background var(--tr);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(46,230,197,0.28);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(46,230,197,0.22);border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.mono{font-family:var(--mono);letter-spacing:0;}
.band{
  height:4px;
  width:64px;
  border-radius:var(--radius-pill);
  background:var(--grad-main);
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,12,22,0.68);
  border-bottom:1px solid transparent;
  transition:background var(--tr),border-color var(--tr),backdrop-filter var(--tr);
}
.site-header.scrolled{
  background:rgba(7,12,22,0.88);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  letter-spacing:0.02em;
  color:var(--text-1);
  white-space:nowrap;
}
.brand:hover{color:#fff;}
.brand .dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(46,230,197,0.9);
  flex:0 0 auto;
}
.nav-right{display:flex;align-items:center;gap:26px;}
.nav-links{display:flex;align-items:center;gap:24px;}
.nav-links a{
  position:relative;
  font-size:14px;
  letter-spacing:0.04em;
  color:var(--text-2);
  padding:6px 0 6px 0;
}
.nav-links a::before{
  content:"";
  position:absolute;
  left:-12px;
  top:50%;
  transform:translateY(-50%) scale(0);
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--primary);
  transition:transform var(--tr);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:0;
  height:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width var(--tr);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--text-1);}
.nav-links a.active::before{transform:translateY(-50%) scale(1);}
.nav-links a.active::after{width:100%;}
.btn-nav{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 18px;
  font-size:13px;
  letter-spacing:0.04em;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);
  color:var(--text-1);
  background:transparent;
}
.btn-nav:hover{background:rgba(46,230,197,0.08);border-color:var(--primary);color:var(--primary);}
.btn-nav:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  background:transparent;
  cursor:pointer;
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;
  width:16px;
  height:1.5px;
  background:var(--text-1);
  transition:transform var(--tr),opacity var(--tr);
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-toggle:hover{border-color:var(--primary);}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  opacity:0.9;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(7,12,22,0.97) 0%,rgba(7,12,22,0.86) 46%,rgba(7,12,22,0.55) 100%);
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:76px 0 72px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:26px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:var(--text-3);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 268px;
  gap:56px;
  align-items:end;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--primary);
  opacity:0.7;
}
.cat-hero h1{
  font-size:clamp(32px,4.6vw,52px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-0.01em;
  margin-bottom:22px;
}
.hero-lead{
  max-width:640px;
  font-size:17px;
  color:var(--text-2);
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-index{
  border-left:1px solid var(--line-strong);
  padding-left:22px;
}
.hero-index h2{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.16em;
  color:var(--text-3);
  text-transform:uppercase;
  margin-bottom:16px;
  font-weight:500;
}
.hero-index li{
  display:flex;
  gap:12px;
  align-items:baseline;
  padding:9px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
}
.hero-index li:last-child{border-bottom:none;}
.hero-index li i{
  font-style:normal;
  font-family:var(--mono);
  font-size:12px;
  color:var(--primary);
  opacity:0.85;
}
.hero-index a:hover{color:var(--text-1);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:500;
  letter-spacing:0.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),border-color var(--tr),color var(--tr),opacity var(--tr);
}
.btn-primary{
  background:var(--grad-main);
  color:#04121A;
  font-weight:600;
  box-shadow:0 0 0 rgba(46,230,197,0);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 8px 28px rgba(46,230,197,0.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 3px 12px rgba(46,230,197,0.22);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{background:rgba(46,230,197,0.08);border-color:var(--primary);color:var(--primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:0.45;pointer-events:none;}
.btn-block{width:100%;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  font-size:12px;
  letter-spacing:0.08em;
  border-radius:var(--radius-pill);
  background:rgba(46,230,197,0.12);
  border:1px solid rgba(46,230,197,0.35);
  color:var(--primary);
  line-height:1.6;
}
.badge-amber{
  background:rgba(255,194,87,0.12);
  border-color:rgba(255,194,87,0.34);
  color:var(--accent);
}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:52px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  margin:18px 0 16px;
}
.section-head p{color:var(--text-2);font-size:16px;}

/* ---------- Two column / sticky ---------- */
.two-col{
  display:grid;
  grid-template-columns:420px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.sticky-side{position:sticky;top:96px;}
.sticky-side .band{margin-bottom:22px;}
.sticky-side h2{
  font-size:26px;
  line-height:1.35;
  margin-bottom:16px;
}
.sticky-side p{color:var(--text-2);font-size:15px;margin-bottom:18px;}
.side-meta{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.side-meta span{
  font-family:var(--mono);
  font-size:13px;
  color:var(--text-3);
}
.side-meta strong{color:var(--accent);font-weight:500;}

/* ---------- Entry cards ---------- */
.entry-list{display:flex;flex-direction:column;gap:18px;}
.entry-card{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) 132px;
  gap:24px;
  align-items:center;
  padding:26px 26px 26px 28px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.entry-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(46,230,197,0.75),rgba(47,123,255,0.15),transparent);
  opacity:0.55;
  transition:opacity var(--tr);
}
.entry-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.entry-card:hover::before{opacity:1;}
.entry-num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--primary);
  letter-spacing:0.06em;
  display:block;
  margin-bottom:10px;
}
.entry-card h3{font-size:20px;line-height:1.4;margin-bottom:10px;}
.entry-card p{font-size:15px;color:var(--text-2);}
.entry-card .entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.entry-thumb{
  width:132px;
  height:96px;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;filter:saturate(0.9);}
.entry-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,0.1),rgba(7,12,22,0.55));
}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.step{
  position:relative;
  padding:28px 22px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-2);
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.step::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(46,230,197,0.7),transparent);
  opacity:0.6;
}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.step:hover::before{opacity:1;}
.step .step-num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:0.1em;
  display:block;
  margin-bottom:14px;
}
.step h3{font-size:19px;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--text-2);}

/* ---------- Stats + quotes ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin-bottom:56px;
}
.stat{
  padding:32px 24px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:none;}
.stat .num{
  font-family:var(--mono);
  font-size:34px;
  color:var(--accent);
  line-height:1.2;
  display:block;
  margin-bottom:8px;
}
.stat span.label{font-size:12px;color:var(--text-3);letter-spacing:0.06em;}
.quotes{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.quote{
  position:relative;
  padding:26px 26px 26px 30px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.quote::before{
  content:"";
  position:absolute;
  left:14px;
  top:26px;
  bottom:26px;
  width:3px;
  border-radius:2px;
  background:var(--primary);
  opacity:0.75;
}
.quote p{font-size:15.5px;color:var(--text-1);margin-bottom:14px;}
.quote cite{
  font-style:normal;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--text-3);
}
.quote:nth-child(2){margin-top:26px;}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:860px;
  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:24px;
  padding:24px 4px;
  background:transparent;
  border:none;
  text-align:left;
  cursor:pointer;
  font-size:17px;
  font-weight:500;
  color:var(--text-1);
  transition:color var(--tr);
}
.faq-q:hover{color:var(--primary);}
.faq-plus{
  flex:0 0 auto;
  width:22px;
  height:22px;
  position:relative;
  transition:transform var(--tr);
}
.faq-plus::before,.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--text-2);
  transition:background var(--tr);
}
.faq-plus::before{left:0;top:10px;width:22px;height:2px;}
.faq-plus::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.open .faq-plus{transform:rotate(45deg);}
.faq-item.open .faq-plus::before,.faq-item.open .faq-plus::after{background:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms ease;
}
.faq-a-inner{
  padding:0 60px 26px 4px;
  font-size:15.5px;
  color:var(--text-2);
}

/* ---------- Form ---------- */
.form-wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);
  gap:56px;
  align-items:start;
}
.form-info h2{font-size:30px;line-height:1.35;margin:18px 0 16px;}
.form-info p{color:var(--text-2);font-size:15.5px;margin-bottom:22px;}
.form-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-top:1px solid var(--line);
  font-size:14.5px;
  color:var(--text-2);
}
.form-list li i{
  font-style:normal;
  font-family:var(--mono);
  color:var(--primary);
  font-size:12px;
  padding-top:4px;
}
.form-card{
  padding:32px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  position:relative;
  overflow:hidden;
}
.form-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(46,230,197,0.7),rgba(47,123,255,0.2),transparent);
}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:13px;
  letter-spacing:0.06em;
  color:var(--text-2);
  margin-bottom:8px;
}
.field input,.field textarea{
  width:100%;
  padding:12px 14px;
  background:rgba(7,12,22,0.55);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--text-1);
  font-size:15px;
  transition:border-color var(--tr),background var(--tr),box-shadow var(--tr);
}
.field textarea{min-height:118px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:hover,.field textarea:hover{border-color:var(--line-strong);}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(7,12,22,0.8);
  box-shadow:0 0 0 4px rgba(46,230,197,0.16);
}
.form-hint{
  font-size:13px;
  color:var(--text-3);
  margin-top:14px;
  line-height:1.7;
}
.form-msg{
  margin-top:14px;
  font-size:14px;
  color:var(--accent);
  min-height:22px;
}

/* ---------- CTA strip ---------- */
.cta-strip{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:40px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-strip::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(46,230,197,0.75),rgba(47,123,255,0.25),transparent);
}
.cta-strip h2{font-size:24px;line-height:1.4;margin-bottom:10px;}
.cta-strip p{color:var(--text-2);font-size:15px;max-width:620px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:72px 0 34px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;font-size:16px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.85;max-width:340px;}
.footer-col h4{
  font-size:13px;
  letter-spacing:0.1em;
  color:var(--text-3);
  font-weight:500;
  margin-bottom:18px;
  text-transform:uppercase;
  font-family:var(--mono);
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .mono{color:var(--text-3);}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .container{max-width:1080px;}
  .two-col{grid-template-columns:360px minmax(0,1fr);gap:44px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .nav-right{gap:14px;}
  .btn-nav{display:none;}
  .site-header.menu-open{
    background:var(--bg-0);
    border-bottom-color:var(--line);
  }
  .site-header.menu-open .nav-links{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:fixed;
    top:64px;
    left:0;
    right:0;
    bottom:0;
    padding:12px 24px 40px;
    background:var(--bg-0);
    overflow-y:auto;
    z-index:75;
  }
  .site-header.menu-open .nav-links a{
    font-size:18px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
    color:var(--text-1);
  }
  .site-header.menu-open .nav-links a::before{left:-14px;}
  .site-header.menu-open .nav-links a::after{display:none;}
  .site-header.menu-open .nav-links a.active{color:var(--primary);}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:40px;align-items:start;}
  .hero-index{border-left:none;border-top:1px solid var(--line-strong);padding-left:0;padding-top:22px;}
  .two-col{grid-template-columns:minmax(0,1fr);gap:36px;}
  .sticky-side{position:static;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .form-wrap{grid-template-columns:minmax(0,1fr);gap:36px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .cat-hero-inner{padding:56px 0 52px;}
  .hero-lead{font-size:16px;}
  .section{padding:56px 0;}
  .entry-card{grid-template-columns:minmax(0,1fr);gap:18px;padding:24px 20px;}
  .entry-thumb{width:100%;height:150px;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .stats{grid-template-columns:minmax(0,1fr);}
  .stat{border-right:none;border-bottom:1px solid var(--line);padding:26px 20px;}
  .stat:last-child{border-bottom:none;}
  .quotes{grid-template-columns:minmax(0,1fr);}
  .quote:nth-child(2){margin-top:0;}
  .faq-a-inner{padding-right:20px;}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .form-card{padding:24px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .cat-hero h1{font-size:30px;}
  .section-head h2{font-size:23px;}
  .entry-card{padding:20px 16px;}
  .entry-card h3{font-size:18px;}
  .sticky-side h2{font-size:22px;}
  .cta-strip h2{font-size:20px;}
  .form-info h2{font-size:24px;}
  .stat .num{font-size:28px;}
  .footer-brand p{font-size:13.5px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1322;
  --bg-2:#101A2C;
  --primary:#2EE6C5;
  --primary-deep:#1FA88F;
  --accent:#FFC257;
  --text-1:#EAF2FF;
  --text-2:#9BAEC8;
  --text-3:#66799A;
  --line:rgba(120,170,255,0.16);
  --line-strong:rgba(120,170,255,0.30);
  --glass:rgba(255,255,255,0.055);
  --grad-main:linear-gradient(135deg,#2EE6C5 0%,#2F7BFF 100%);
  --radius-card:14px;
  --radius-btn:10px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:-0.005em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
.mono{font-family:var(--font-mono);letter-spacing:0.01em;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(7,12,22,0.68);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.scrolled{background:rgba(7,12,22,0.9);border-bottom-color:var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:16px;font-weight:600;letter-spacing:0.02em;color:var(--text-1);
  white-space:nowrap;
}
.brand .dot{
  width:8px;height:8px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 10px rgba(46,230,197,.9);flex:none;
}
.nav-right{display:flex;align-items:center;gap:26px;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;padding:6px 0;font-size:14px;letter-spacing:0.04em;
  color:var(--text-2);transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--grad-main);transition:left .25s ease,right .25s ease;
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{left:0;right:0;}
.nav-links a.active{color:var(--text-1);}
.nav-links a.active::after{left:0;right:0;}
.nav-links a.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--primary);
}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 18px;border-radius:999px;border:1px solid var(--line-strong);
  font-size:13.5px;letter-spacing:0.04em;color:var(--text-1);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-nav:hover{background:rgba(46,230,197,0.08);border-color:rgba(46,230,197,0.55);}
.btn-nav:active{transform:translateY(1px);}
.nav-toggle{
  display:none;width:40px;height:40px;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{background:rgba(46,230,197,0.08);border-color:rgba(46,230,197,0.5);}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text-1);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 88px;border-bottom:1px solid var(--line);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.3;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.72) 0%,rgba(7,12,22,.9) 62%,var(--bg-0) 100%);
}
.hero-inner{position:relative;max-width:860px;margin:0 auto;text-align:center;}
.light-bar{
  width:64px;height:3px;border-radius:2px;background:var(--grad-main);
  margin:0 auto 30px;box-shadow:0 0 18px rgba(46,230,197,.55);
}
.eyebrow{
  display:inline-block;margin-bottom:18px;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);
  font-size:12px;letter-spacing:0.08em;color:var(--primary);
}
.hero-title{
  font-size:clamp(32px,4.4vw,52px);line-height:1.15;font-weight:700;
  letter-spacing:-0.01em;margin-bottom:20px;
}
.hero-lead{
  font-size:17px;line-height:1.85;color:var(--text-2);
  max-width:660px;margin:0 auto 34px;
}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:0.01em;
  transition:filter .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,transform .15s ease;
}
.btn-primary{background:var(--grad-main);color:#04121A;}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 6px 24px rgba(46,230,197,.28);}
.btn-primary:active{transform:translateY(1px);}
.btn-primary[disabled]{opacity:.45;pointer-events:none;}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text-1);background:transparent;}
.btn-ghost:hover{background:rgba(46,230,197,.08);border-color:rgba(46,230,197,.5);}
.btn-ghost:active{transform:translateY(1px);}
.btn-ghost[disabled]{opacity:.45;pointer-events:none;}
.status-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:34px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);
  font-size:13px;color:var(--text-2);
}
.pill .mono{color:var(--text-1);font-size:12.5px;}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(255,194,87,.8);flex:none;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line);}
.section.alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-label{
  display:block;font-family:var(--font-mono);font-size:12.5px;letter-spacing:0.14em;
  color:var(--primary);margin-bottom:14px;text-transform:uppercase;
}
.section-title{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.section-sub{font-size:15.5px;color:var(--text-2);max-width:680px;}
.section-head.center .section-sub{margin:0 auto;}

/* ---------- 三列速查 ---------- */
.tri-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.tri-col{
  position:relative;padding:30px 26px;border:1px solid var(--line);
  border-radius:var(--radius-card);background:var(--glass);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tri-col::before{
  content:"";position:absolute;top:0;left:16px;right:16px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,230,197,.75),transparent);
  opacity:.65;transition:opacity .2s ease;
}
.tri-col:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 6px 24px rgba(46,230,197,.18);}
.tri-col:hover::before{opacity:1;}
.tri-num{
  display:block;font-family:var(--font-mono);font-size:12.5px;letter-spacing:0.12em;
  color:var(--primary);margin-bottom:12px;
}
.tri-col h3{font-size:20px;margin-bottom:10px;}
.tri-col > p{font-size:14.5px;color:var(--text-2);margin-bottom:16px;}
.tri-col ul li{
  display:flex;gap:10px;padding:11px 0;
  border-top:1px solid var(--line);
  font-size:14.5px;color:var(--text-2);line-height:1.7;
}
.tri-col ul li::before{
  content:"";flex:none;width:5px;height:5px;border-radius:50%;
  background:var(--primary-deep);margin-top:11px;
}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;}
.split figure{margin:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;position:relative;}
.split figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,0) 40%,rgba(7,12,22,.55) 100%);
  pointer-events:none;
}
.split figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split figcaption{
  position:absolute;left:18px;bottom:14px;z-index:2;
  font-size:13px;color:var(--text-2);font-family:var(--font-mono);
}
.feature-list{display:grid;gap:14px;margin-top:26px;}
.feature-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-2);font-size:14.5px;color:var(--text-2);
  transition:border-color .2s ease,transform .2s ease;
}
.feature-list li:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.feature-list li strong{display:block;color:var(--text-1);font-weight:600;margin-bottom:2px;font-size:15px;}
.feature-list .idx{font-family:var(--font-mono);font-size:13px;color:var(--accent);flex:none;padding-top:2px;}

/* ---------- 公告列表 ---------- */
.notice-list{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--glass);}
.notice-list li{
  display:flex;gap:22px;align-items:baseline;flex-wrap:wrap;
  padding:20px 24px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.notice-list li:last-child{border-bottom:0;}
.notice-list li:hover{background:rgba(46,230,197,.05);}
.notice-list time{
  font-family:var(--font-mono);font-size:13px;color:var(--accent);
  flex:none;min-width:104px;
}
.notice-list span{font-size:15px;color:var(--text-2);}
.notice-list strong{color:var(--text-1);font-weight:600;}

/* ---------- 流程 ---------- */
.steps{display:grid;gap:16px;}
.step{
  display:flex;gap:20px;align-items:flex-start;
  padding:24px 26px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-2);
  transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.step-num{
  font-family:var(--font-mono);font-size:13px;color:var(--accent);
  flex:none;padding-top:4px;letter-spacing:0.06em;
}
.step h3{font-size:17.5px;margin-bottom:6px;}
.step p{font-size:14.5px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-icon{position:relative;width:22px;height:22px;flex:none;transition:transform .25s ease;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--primary);transition:background .25s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 0 24px;font-size:15px;color:var(--text-2);max-width:720px;}

/* ---------- 表单 ---------- */
.form-wrap{display:grid;grid-template-columns:0.9fr 1.1fr;gap:44px;align-items:start;}
.form-intro h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.form-intro p{font-size:15.5px;color:var(--text-2);margin-bottom:22px;}
.form-meta{display:grid;gap:10px;}
.form-meta li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text-3);
}
.form-meta li::before{
  content:"";flex:none;width:5px;height:5px;border-radius:50%;
  background:var(--primary-deep);margin-top:9px;
}
.form-card{
  padding:32px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  position:relative;
}
.form-card::before{
  content:"";position:absolute;top:0;left:18px;right:18px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,230,197,.7),transparent);
}
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:13.5px;letter-spacing:0.04em;color:var(--text-2);margin-bottom:8px;
}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);background:rgba(7,12,22,.62);
  font-size:15px;color:var(--text-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:hover,.field textarea:hover{border-color:rgba(46,230,197,.4);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(46,230,197,.14);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.75;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px;}
.form-note{font-size:13px;color:var(--text-3);}
.form-feedback{margin-top:14px;font-size:13.5px;color:var(--primary);min-height:20px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap;
  padding:40px 42px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(135deg,rgba(46,230,197,.10) 0%,rgba(47,123,255,.08) 100%);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,230,197,.8),transparent);
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:320px;line-height:1.85;}
.footer-col h4{
  font-size:13.5px;letter-spacing:0.08em;color:var(--text-1);
  margin-bottom:18px;font-weight:600;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-col li a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{font-size:12.5px;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{max-width:1080px;}
}
@media (max-width:1024px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:64px;left:0;right:0;bottom:0;z-index:99;
    flex-direction:column;align-items:stretch;gap:0;
    padding:20px 24px 40px;
    background:rgba(7,12,22,.98);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{
    font-size:18px;padding:20px 0;border-bottom:1px solid var(--line);color:var(--text-1);
  }
  .nav-links a::after,.nav-links a.active::before{display:none;}
  .nav-links a:hover{color:var(--primary);}
  .tri-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .form-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .hero{padding:72px 0 64px;min-height:76vh;display:flex;align-items:center;}
  .hero-title{font-size:32px;}
  .hero-lead{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .btn{padding:12px 20px;font-size:14.5px;}
  .btn-nav{display:none;}
  .cta-band{padding:30px 24px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{margin-top:36px;flex-direction:column;align-items:flex-start;gap:8px;}
  .notice-list li{padding:18px 20px;gap:8px;}
  .notice-list time{min-width:auto;}
}
@media (max-width:520px){
  .tri-col{padding:22px 18px;}
  .step{padding:20px 18px;gap:14px;}
  .form-card{padding:24px 18px;}
  .brand{font-size:15px;}
  .hero-title{font-size:28px;}
  .section-title{font-size:22px;}
  .faq-q{font-size:16px;}
  .pill{font-size:12.5px;}
}