/* roulang page: index */
:root{
  --lime:#A8F04B;--lime-h:#92DC33;--lime-a:#7FC61F;
  --violet:#6E5BFF;--amber:#FFB020;--error:#E5484D;--success:#2FBF71;
  --dark:#0C120E;--dark-2:#101713;
  --dark-line:rgba(255,255,255,.08);
  --dark-text:#F2F5EE;--dark-muted:#A8B3A6;
  --bg:#F6F7F3;--card:#FFFFFF;--line:#E3E7DE;
  --ink:#12160F;--muted:#5A6259;
  --r-card:14px;--r-btn:10px;--r-img:12px;--r-block:20px;
  --sh:0 1px 2px rgba(16,23,19,.06),0 8px 24px -12px rgba(16,23,19,.18);
  --font:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'Barlow Condensed','DIN Alternate','Roboto Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.005em}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.005em}
h3{font-size:20px;font-weight:700;line-height:1.35}
h4{font-size:17px;font-weight:600;line-height:1.4}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head p{color:var(--muted);max-width:640px;margin-top:10px;font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--lime)}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--lime);display:block}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--lime);color:#10230A}
.btn-primary:hover{background:var(--lime-h);transform:translateY(-1px)}
.btn-primary:active{background:var(--lime-a)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#101713}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--lime);color:#10230A;background:rgba(168,240,75,.10)}
.btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.22);color:var(--dark-text)}
.btn-ghost-dark:hover{border-color:var(--lime);color:var(--lime)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid rgba(110,91,255,.5);padding-bottom:2px;transition:border-color .18s ease,color .18s ease}
.link-more:hover{border-color:var(--lime);color:#2E6B0E}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:11px;font-weight:600;letter-spacing:.02em;background:rgba(110,91,255,.10);color:#5445C9;white-space:nowrap}
.badge-lime{background:rgba(168,240,75,.22);color:#2E6B0E}
.badge-amber{background:rgba(255,176,32,.16);color:#8A5A00}

/* layout shell */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:248px;z-index:80;background:var(--dark);border-right:1px solid var(--dark-line);display:flex;flex-direction:column;padding:22px 16px 20px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--lime);color:#10230A;font-family:var(--font-num);font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center;letter-spacing:-.02em;flex:none}
.brand-name{color:var(--dark-text);font-size:16px;font-weight:700;white-space:nowrap}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.nav-link{position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 16px;border-radius:10px;color:var(--dark-muted);font-size:14.5px;font-weight:500;transition:background .18s ease,color .18s ease}
.nav-link svg{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-link:hover{background:rgba(255,255,255,.06);color:var(--dark-text)}
.nav-link.active{background:rgba(168,240,75,.10);color:#fff}
.nav-link.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--lime)}
.side-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--dark-line);display:flex;flex-direction:column;gap:10px}
.side-foot .btn{width:100%}
.side-foot-note{font-size:12px;line-height:1.6;color:var(--dark-muted)}
.shell{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.mobile-bar{display:none}
.backdrop{display:none}

/* hero */
.hero{position:relative;background:var(--dark);color:var(--dark-text);overflow:hidden;padding:76px 0 96px}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.26}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(102deg,rgba(12,18,14,.97) 0%,rgba(12,18,14,.86) 44%,rgba(12,18,14,.58) 100%)}
.hero .container{position:relative;z-index:2}
.hero-slash{position:absolute;left:0;right:0;bottom:0;height:5px;background:var(--lime);clip-path:polygon(0 100%,0 46%,40% 0,100% 0,100% 100%);z-index:3}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.hero h1{color:#fff;margin:16px 0 18px}
.hero h1 em{font-style:normal;color:var(--lime)}
.hero-sub{font-size:17px;color:#C8D2C4;max-width:520px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 30px}
.hero-tags span{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;color:#D9E4D3;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.10)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-panel{display:flex;flex-direction:column;gap:16px}
.panel-card{background:#101713;border:1px solid var(--dark-line);border-radius:var(--r-card);padding:20px 22px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.panel-head h3{font-size:15px;color:#fff}
.panel-head span{font-size:11.5px;color:var(--dark-muted)}
.panel-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid rgba(255,255,255,.06);font-size:13.5px;color:#C8D2C4}
.panel-row:first-of-type{border-top:0}
.dot{display:inline-flex;align-items:center;gap:8px}
.dot i{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block}
.dot.warn i{background:var(--amber)}
.panel-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;letter-spacing:-.02em;color:var(--lime);line-height:1.1}
.panel-mini{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.metric{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:8px}
.metric-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.metric-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(32px,3.4vw,52px);font-weight:700;letter-spacing:-.02em;line-height:1.05;color:var(--ink);display:flex;align-items:baseline;gap:4px}
.metric-num small{font-family:var(--font);font-size:14px;font-weight:600;color:var(--muted);letter-spacing:0}
.metric-label{font-size:14.5px;font-weight:600;color:var(--ink)}
.metric-note{font-size:12px;line-height:1.6;color:var(--muted);border-top:1px solid var(--line);padding-top:10px;margin-top:4px}
.trend{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:999px;font-size:11px;font-weight:700;white-space:nowrap}
.trend-up{background:rgba(47,191,113,.12);color:#1E8B4F}
.trend-warn{background:rgba(255,176,32,.16);color:#8A5A00}

/* services */
.services-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:minmax(150px,auto);gap:24px}
.svc-main{grid-column:span 2;grid-row:span 2;position:relative;display:flex;flex-direction:column;justify-content:flex-end;gap:14px;padding:0;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);background:#101713;box-shadow:var(--sh);transition:border-color .2s ease}
.svc-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42;border-radius:0}
.svc-main::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,18,14,.30) 0%,rgba(12,18,14,.92) 74%)}
.svc-main-body{position:relative;z-index:2;padding:28px;color:#fff}
.svc-main-body h3{color:#fff;margin-bottom:10px;font-size:22px}
.svc-main-body p{color:#C8D2C4;font-size:14.5px;max-width:420px}
.svc-main .arrow{position:relative;z-index:2;display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--lime)}
.svc{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);
  display:flex;flex-direction:column;gap:10px;transition:border-color .2s ease,transform .2s ease;
}
.svc:hover{border-color:var(--lime);transform:translateY(-2px)}
.svc-icon{width:38px;height:38px;border-radius:10px;background:rgba(168,240,75,.20);color:#2E6B0E;display:flex;align-items:center;justify-content:center}
.svc-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.svc p{font-size:13.5px;color:var(--muted);line-height:1.7}
.svc .arrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:#2E6B0E;margin-top:auto;transition:transform .2s ease}
.svc:hover .arrow{transform:translateX(4px)}
.svc-main:hover .arrow{transform:translateX(4px)}

/* scenario */
.scenario{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:center}
.scenario-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.scenario-figure img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:4/3}
.scenario-list{display:flex;flex-direction:column;gap:22px;margin-top:28px}
.scenario-item{display:flex;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.scenario-item:last-child{border-bottom:0;padding-bottom:0}
.scenario-idx{font-family:var(--font-num);font-size:15px;font-weight:700;color:#2E6B0E;background:rgba(168,240,75,.22);border-radius:8px;width:34px;height:34px;display:flex;align-items:center;justify-content:center;flex:none;font-variant-numeric:tabular-nums}
.scenario-item h4{margin-bottom:4px}
.scenario-item p{font-size:14px;color:var(--muted)}

/* compare */
.compare-band{background-color:var(--bg);background-image:linear-gradient(rgba(16,23,19,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,23,19,.045) 1px,transparent 1px);background-size:32px 32px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 56px}
.compare-item h4{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:15.5px;margin-bottom:12px}
.compare-item h4 b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;letter-spacing:-.02em;color:#2E6B0E}
.bar{height:9px;border-radius:999px;background:#E3E7DE;overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:var(--lime)}
.compare-item p{font-size:12.5px;color:var(--muted);margin-top:10px;line-height:1.65}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{display:flex;flex-direction:column;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);transition:border-color .2s ease,transform .2s ease;min-height:100%}
.news-card:hover{border-color:var(--lime);transform:translateY(-2px)}
.news-card h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .news-desc{font-size:13.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:8px}
.cms-empty{border:1px dashed #C9D0C2;border-radius:var(--r-card);padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;background:rgba(255,255,255,.6)}
.cms-empty p{color:var(--muted);font-size:14.5px}
.skeleton-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:0}

/* 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:20px;padding:22px 0;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .18s ease}
.faq-q:hover{color:#2E6B0E}
.faq-icon{position:relative;width:22px;height:22px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:#2E6B0E;border-radius:2px;transition:transform .2s ease}
.faq-icon::before{width:12px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:12px;transform:translate(-50%,-50%)}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{padding:0 0 24px;font-size:14.5px;line-height:1.85;color:var(--muted);max-width:860px}

/* cta / form */
.cta-block{background:var(--dark);border-radius:var(--r-block);padding:56px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);gap:48px;color:var(--dark-text);border:1px solid var(--dark-line)}
.cta-block h2{color:#fff;margin-bottom:16px}
.cta-block .lead{color:#C8D2C4;font-size:15px;max-width:400px}
.cta-points{display:flex;flex-direction:column;gap:14px;margin-top:28px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:#C8D2C4;line-height:1.6}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);flex:none;margin-top:9px}
.form-card{background:#fff;border-radius:var(--r-card);padding:28px;box-shadow:0 18px 40px -24px rgba(0,0,0,.6)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field label .req{color:var(--error);margin-left:2px}
.field input,.field select,.field textarea{width:100%;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:#FBFCF9;padding:0 12px;font-size:14px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease}
.field textarea{height:104px;padding:12px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7B847A 50%),linear-gradient(135deg,#7B847A 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--lime-h);box-shadow:0 0 0 3px rgba(168,240,75,.28)}
.field.error input,.field.error select,.field.error textarea{border-color:var(--error);box-shadow:0 0 0 3px rgba(229,72,77,.14)}
.field .err-msg{display:none;font-size:12px;color:var(--error);line-height:1.4}
.field.error .err-msg{display:block}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6}
.form-success{display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-btn);background:rgba(47,191,113,.12);color:#1E8B4F;font-size:13.5px;font-weight:600}
.form-success.show{display:block}

/* footer */
.site-footer{background:var(--dark);color:var(--dark-muted);padding:64px 0 0;border-top:1px solid var(--dark-line)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{padding:0 0 16px}
.footer-brand p{font-size:13.5px;line-height:1.8;max-width:280px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--dark-muted);transition:color .18s ease}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:13.5px;line-height:1.8}
.footer-bottom{margin-top:48px;border-top:1px solid var(--dark-line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px}

/* responsive */
@media (max-width:1439px){
  .container{max-width:1140px}
}
@media (min-width:1024px) and (max-width:1199px){
  .sidebar{width:76px;padding:18px 10px;align-items:center}
  .brand{padding:6px 0 18px;justify-content:center}
  .brand-name{display:none}
  .nav-link{width:44px;padding:0;justify-content:center}
  .nav-link span{display:none}
  .nav-link::after{content:attr(data-label);position:absolute;left:54px;top:50%;transform:translateY(-50%);background:#101713;color:#F2F5EE;font-size:12px;padding:5px 10px;border-radius:6px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s ease;border:1px solid rgba(255,255,255,.10);z-index:5}
  .nav-link:hover::after{opacity:1}
  .side-foot{display:none}
  .shell{margin-left:76px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .scenario{grid-template-columns:1fr;gap:32px}
  .cta-block{grid-template-columns:1fr;padding:40px}
}
@media (max-width:1023px){
  .mobile-bar{display:flex;position:fixed;top:0;left:0;right:0;height:56px;z-index:95;align-items:center;justify-content:space-between;padding:0 16px;background:var(--dark);border-bottom:1px solid var(--dark-line)}
  .mobile-bar .brand{padding:0}
  .burger{width:40px;height:40px;border:1px solid var(--dark-line);border-radius:10px;background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}
  .burger span{width:16px;height:2px;background:#F2F5EE;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
  .burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .burger[aria-expanded="true"] span:nth-child(2){opacity:0}
  .burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .sidebar{width:280px;transform:translateX(-100%);transition:transform .28s ease;z-index:100;padding-top:20px}
  .sidebar.open{transform:translateX(0)}
  .backdrop{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:90}
  .backdrop.show{opacity:1;pointer-events:auto}
  .shell{margin-left:0;padding-top:56px}
  .section{padding:64px 0}
  .hero{padding:56px 0 72px}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .services-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .svc-main{grid-column:span 2;grid-row:span 1;min-height:280px}
  .compare-grid{grid-template-columns:1fr;gap:28px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .skeleton-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{padding:32px}
  .form-row{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .hero-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .skeleton-row{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-block{grid-template-columns:1fr;padding:24px;border-radius:16px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{font-size:15.5px;padding:18px 0}
}
@media (max-width:519px){
  body{font-size:15px}
  .section{padding:48px 0}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .metric{padding:18px}
  .metric-num{font-size:30px}
  .services-grid{grid-template-columns:1fr;gap:16px}
  .svc-main{grid-column:span 1;min-height:240px}
  .hero-tags span{font-size:11.5px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --lime:#A8F04B;
  --lime-hover:#92DC33;
  --lime-press:#7FC61F;
  --violet:#6E5BFF;
  --amber:#FFB020;
  --danger:#E5484D;
  --success:#2FBF71;
  --dark:#0C120E;
  --dark-2:#101713;
  --dark-line:rgba(255,255,255,.08);
  --dark-text:#F2F5EE;
  --dark-muted:#A8B3A6;
  --bg:#F6F7F3;
  --card:#FFFFFF;
  --line:#E3E7DE;
  --ink:#12160F;
  --muted:#5A6259;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-block:20px;
  --shadow:0 1px 2px rgba(16,23,19,.06), 0 8px 24px -12px rgba(16,23,19,.18);
  --sidebar-w:248px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'Barlow Condensed','DIN Alternate','Roboto Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ============ 品牌 ============ */
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  display:flex;align-items:center;justify-content:center;
  background:var(--lime);color:#10230A;
  border-radius:9px;font-size:13px;font-weight:800;letter-spacing:-.03em;
  font-family:var(--font-num);
}
.brand-name{font-size:16px;font-weight:700;letter-spacing:0;white-space:nowrap}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--dark);
  border-right:1px solid var(--dark-line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  transition:transform .26s ease;
}
.sidebar .brand{margin:0 4px 28px;color:var(--dark-text)}
.nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 16px;border-radius:10px;
  color:var(--dark-muted);font-size:14.5px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--dark-text)}
.nav-item.active{background:rgba(168,240,75,.10);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--lime);
}
.nav-ico{width:20px;height:20px;flex:0 0 20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-text{white-space:nowrap}
.side-foot{border-top:1px solid var(--dark-line);padding-top:16px;margin-top:16px}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:10px;background:var(--lime);color:#10230A;
  font-weight:600;font-size:14.5px;width:100%;
  transition:background .18s ease,transform .18s ease;
}
.side-cta:hover{background:var(--lime-hover);transform:translateY(-1px)}
.side-cta:active{background:var(--lime-press);transform:none}
.side-note{margin-top:10px;font-size:11.5px;line-height:1.6;color:#7E8A7B;text-align:center}

/* ============ 移动端顶栏 + 抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;justify-content:space-between;
  padding:0 20px;background:var(--dark);border-bottom:1px solid var(--dark-line);
}
.mobile-bar .brand{color:var(--dark-text)}
.burger{
  width:40px;height:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border-radius:10px;border:1px solid var(--dark-line);
}
.burger span{display:block;width:18px;height:2px;background:var(--dark-text);border-radius:2px;transition:transform .2s ease}
.burger:hover{background:rgba(255,255,255,.06)}
.mask{
  position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:55;
  opacity:0;pointer-events:none;transition:opacity .26s ease;
}
.mask.show{opacity:1;pointer-events:auto}
.drawer-close{
  display:none;position:absolute;top:14px;right:14px;width:32px;height:32px;
  align-items:center;justify-content:center;border-radius:8px;color:var(--dark-muted);
  border:1px solid var(--dark-line);font-size:16px;line-height:1;
}
.drawer-close:hover{color:#fff;background:rgba(255,255,255,.06)}

/* ============ 主区域 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.topbar{
  height:56px;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;position:sticky;top:0;z-index:40;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);max-width:1200px;width:100%;
  margin:0 auto;padding:0 32px;overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--muted);transition:color .18s ease}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--violet);text-underline-offset:3px}
.breadcrumb .sep{color:#B6BDB1}
.breadcrumb .current{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis}

/* ============ 文章区 ============ */
.article-section{padding:48px 0 72px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start;
}
.article-head{margin-bottom:28px}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:11.5px;font-weight:600;letter-spacing:.01em;
  background:#EFF6E2;color:#3E6A12;border:1px solid #DCEBC5;
}
.badge.violet{background:#EFEDFF;color:#3A2CB8;border-color:#DCD8FF}
.meta-item{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C3CABD;display:inline-block}
.article-head h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
  color:var(--ink);margin-bottom:14px;
}
.author-line{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.author-line .brand-mark{width:26px;height:26px;flex:0 0 26px;border-radius:7px;font-size:11px}
.hero-figure{margin:0 0 36px;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow);background:#DDE3D6}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-figure figcaption{font-size:13px;color:var(--muted);padding:10px 2px 0;background:transparent}

/* 正文 */
.prose{max-width:720px;font-size:16.5px;line-height:1.85;color:var(--ink)}
.prose p{margin:0 0 1.2em}
.prose h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);line-height:1.35;font-weight:700;
  margin:40px 0 16px;padding-left:16px;color:var(--ink);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:4px;
  border-radius:2px;background:var(--lime);
}
.prose h3{font-size:19px;line-height:1.4;font-weight:700;margin:30px 0 12px;color:var(--ink)}
.prose h4{font-size:16.5px;font-weight:600;margin:22px 0 10px;color:var(--ink)}
.prose a{color:#3A2CB8;text-decoration:underline;text-decoration-color:rgba(110,91,255,.45);text-underline-offset:3px;transition:color .18s ease,text-decoration-color .18s ease}
.prose a:hover{color:#2A1E8F;text-decoration-color:var(--lime-hover)}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:22px;line-height:1.8}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--lime-press)}
.prose blockquote{
  margin:24px 0;padding:18px 20px;background:#F1F7E8;border-left:3px solid var(--lime);
  border-radius:0 10px 10px 0;color:#26301F;font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-img);margin:24px auto}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.prose thead th{background:#F0F3EB;font-weight:600;text-align:left}
.prose th,.prose td{padding:11px 14px;border-bottom:1px solid var(--line)}
.prose tbody tr:nth-child(even){background:#FAFBF7}
.prose code{
  font-family:var(--font-num);font-size:.9em;background:#F0F2ED;color:#2A3520;
  padding:2px 6px;border-radius:6px;
}
.prose pre{background:#F2F4EF;border:1px solid var(--line);border-radius:12px;padding:16px;overflow:auto;margin:22px 0}
.prose pre code{background:none;padding:0}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.empty-box{
  border:1px dashed #C9D2C2;border-radius:var(--r-card);padding:40px 24px;text-align:center;
  background:#FAFBF7;
}
.empty-box p{font-size:16px;color:var(--muted);margin-bottom:16px}

/* 侧栏卡 */
.article-aside{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow);
}
.side-card h4{font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h4::before{content:"";width:6px;height:14px;border-radius:2px;background:var(--lime)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;font-size:13.5px;color:var(--muted);
  border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-list a:hover{background:#F4F7EE;color:var(--ink);border-left-color:var(--lime)}
.link-list{display:flex;flex-direction:column;gap:10px}
.link-list a{font-size:14px;color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed #E9EDE4;transition:color .18s ease}
.link-list a:last-child{border-bottom:0}
.link-list a:hover{color:#3A2CB8}
.link-list a .arrow{color:var(--lime-press);font-size:13px;transition:transform .18s ease}
.link-list a:hover .arrow{transform:translateX(4px)}
.side-tip{font-size:12.5px;color:var(--muted);line-height:1.7}

/* CTA 横条 */
.cta-bar{
  margin:48px 0 0;background:var(--dark);border-radius:var(--r-block);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  border:1px solid var(--dark-line);
}
.cta-bar h3{color:var(--dark-text);font-size:22px;font-weight:700;margin-bottom:8px;line-height:1.4}
.cta-bar p{color:var(--dark-muted);font-size:14px;margin:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-weight:600;font-size:14.5px;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-lime{background:var(--lime);color:#10230A}
.btn-lime:hover{background:var(--lime-hover);transform:translateY(-1px)}
.btn-lime:active{background:var(--lime-press);transform:none}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--lime);color:var(--ink);transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--ink);height:40px}
.btn-text .arrow{transition:transform .18s ease;color:var(--lime-press)}
.btn-text:hover .arrow{transform:translateX(-4px)}
.btn-text:hover{color:#3A2CB8}

/* 相关推荐 */
.related{padding:56px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.sec-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.3;color:var(--ink)}
.sec-head p{font-size:13.5px;color:var(--muted);margin-top:6px}
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.post-card:hover{border-color:var(--lime);transform:translateY(-2px);box-shadow:0 2px 4px rgba(16,23,19,.06),0 16px 32px -18px rgba(16,23,19,.28)}
.post-card .thumb{display:block;overflow:hidden;background:#DDE3D6}
.post-card .thumb img{aspect-ratio:16/10;object-fit:cover;width:100%;transition:transform .3s ease}
.post-card:hover .thumb img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:16.5px;font-weight:700;line-height:1.45;color:var(--ink)}
.post-body p{font-size:13.5px;color:var(--muted);line-height:1.7;flex:1}
.post-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:#8B958A;margin-top:2px}
.post-foot time{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.back-row{padding:36px 0 0}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-muted);margin-top:0;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:var(--dark-text);margin-bottom:16px}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--dark-muted);max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--dark-text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--dark-muted);transition:color .18s ease}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--dark-muted)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--dark-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7E8A7B;
}

/* ============ 响应式 ============ */
@media (max-width:1199px) and (min-width:1024px){
  :root{--sidebar-w:76px}
  .sidebar{padding:24px 12px 20px;align-items:center}
  .sidebar .brand{margin-bottom:24px}
  .sidebar .brand-name{display:none}
  .nav{width:100%;align-items:center}
  .nav-item{justify-content:center;padding:0;width:48px;height:44px}
  .nav-text{display:none}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:60px;top:50%;transform:translateY(-50%);
    background:var(--dark-2);color:var(--dark-text);border:1px solid var(--dark-line);
    font-size:12.5px;padding:6px 10px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s ease;z-index:80;
  }
  .nav-item:hover::after{opacity:1}
  .side-cta{padding:0;width:48px;font-size:0;gap:0}
  .side-cta::before{content:"+";font-size:20px;line-height:1}
  .side-note{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:32px}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .sidebar{
    transform:translateX(-100%);width:280px;padding-top:52px;
    box-shadow:0 0 40px rgba(0,0,0,.4);
  }
  .sidebar.open{transform:translateX(0)}
  .drawer-close{display:flex}
  .mobile-bar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .topbar{top:56px}
  .container{padding:0 24px}
  .breadcrumb{padding:0 24px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-aside{position:static;order:2}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px;gap:20px}
}
@media (max-width:767px){
  .article-section{padding:32px 0 56px}
  .container{padding:0 20px}
  .breadcrumb{padding:0 20px;font-size:12px}
  .topbar{height:52px}
  .prose{font-size:15.5px;line-height:1.85}
  .prose h2{margin-top:32px}
  .post-grid{grid-template-columns:1fr}
  .cta-bar{padding:24px 20px;border-radius:16px}
  .cta-bar h3{font-size:19px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand p{max-width:none}
  .site-footer{padding:48px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-figure figcaption{font-size:12px}
}
@media (max-width:479px){
  .meta-row{gap:8px}
  .article-head h1{font-size:24px}
  .btn{width:100%}
  .cta-bar .btn{width:100%}
  .side-card{padding:16px}
  .post-body{padding:16px 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category1 */
:root{
  --lime:#A8F04B;
  --lime-hover:#92DC33;
  --lime-active:#7FC61F;
  --violet:#6E5BFF;
  --amber:#FFB020;
  --danger:#E5484D;
  --success:#2FBF71;
  --dark:#0C120E;
  --dark-2:#101713;
  --dark-line:rgba(255,255,255,.08);
  --dark-text:#F2F5EE;
  --dark-sub:#A8B3A6;
  --light:#F6F7F3;
  --card:#FFFFFF;
  --line:#E3E7DE;
  --ink:#12160F;
  --ink-sub:#5A6259;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-block:20px;
  --shadow:0 1px 2px rgba(16,23,19,.06),0 8px 24px -12px rgba(16,23,19,.18);
  --shadow-lift:0 2px 6px rgba(16,23,19,.08),0 16px 36px -16px rgba(16,23,19,.24);
  --sidebar-w:248px;
  --font:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --num:'Barlow Condensed','DIN Alternate','Roboto Mono','Menlo',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--light);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:rgba(168,240,75,.4);color:#12160F}

/* ============ 布局骨架 ============ */
.app-main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--dark);
  border-right:1px solid var(--dark-line);
  display:flex;
  flex-direction:column;
  padding:22px 16px 20px;
  z-index:60;
  transition:width .22s ease,transform .26s ease;
}
.sidebar-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding:0 4px 20px;
  border-bottom:1px solid var(--dark-line);
  margin-bottom:18px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand-mark{
  width:32px;height:32px;
  flex:0 0 32px;
  border-radius:9px;
  background:var(--lime);
  color:#10230A;
  font-family:var(--num);
  font-weight:700;
  font-size:15px;
  letter-spacing:-.02em;
  display:flex;
  align-items:center;
  justify-content:center;
}
.brand-name{
  color:var(--dark-text);
  font-size:15px;
  font-weight:700;
  letter-spacing:0;
  white-space:nowrap;
}
.side-nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  flex:1 1 auto;
  overflow-y:auto;
  padding-bottom:12px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 16px;
  border-radius:var(--r-btn);
  color:var(--dark-sub);
  font-size:14.5px;
  line-height:1;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{
  width:20px;height:20px;
  flex:0 0 20px;
  stroke:currentColor;
  fill:none;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--dark-text)}
.nav-item.is-active{
  background:rgba(168,240,75,.10);
  color:#FFFFFF;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--lime);
}
.sidebar-foot{
  padding-top:16px;
  border-top:1px solid var(--dark-line);
}
.sidebar-note{
  margin-top:10px;
  font-size:12px;
  line-height:1.6;
  color:#7E8A7B;
  text-align:center;
  white-space:nowrap;
}
.drawer-close{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:0;
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{
  background:var(--lime);
  color:#10230A;
}
.btn-primary:hover{background:var(--lime-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--lime-active);transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--dark-text);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn-line{
  background:#FFFFFF;
  color:var(--ink);
  border-color:var(--line);
}
.btn-line:hover{border-color:var(--lime);color:var(--ink)}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ============ 顶部面包屑条 ============ */
.topbar{
  height:56px;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  position:sticky;
  top:0;
  z-index:40;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-sub);
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-sub);transition:color .18s ease}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--violet);text-underline-offset:3px}
.breadcrumb .sep{color:#B9C0B4}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--ink-sub);
  text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;height:3px;
  border-radius:2px;
  background:var(--lime);
}
h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
h3{
  font-size:20px;
  line-height:1.35;
  font-weight:700;
}
h4{font-size:17px;font-weight:600;line-height:1.4}
.lead{
  font-size:16px;
  color:var(--ink-sub);
  max-width:62ch;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid rgba(110,91,255,.5);
  padding-bottom:2px;
  transition:border-color .18s ease,color .18s ease;
}
.text-link:hover{border-bottom-color:var(--lime);color:#000}
.arrow{transition:transform .18s ease}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  background:var(--dark);
  color:var(--dark-text);
  overflow:hidden;
  padding:72px 0 64px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center right;
  opacity:.22;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,#0C120E 12%,rgba(12,18,14,.86) 46%,rgba(12,18,14,.55) 100%);
}
.page-hero .container{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--dark-line);
  background:rgba(168,240,75,.10);
  color:var(--lime);
  font-size:12px;
  font-weight:600;
  margin-bottom:20px;
}
.hero-badge .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(168,240,75,.18);
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:20ch;
  margin-bottom:18px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--lime);
}
.hero-sub{
  font-size:17px;
  line-height:1.75;
  color:var(--dark-sub);
  max-width:56ch;
  margin-bottom:26px;
}
.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:30px;
}
.hero-tags{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--dark-line);
  color:var(--dark-sub);
  font-size:12.5px;
  font-weight:500;
}
.hero-slash{
  position:absolute;
  left:0;right:0;bottom:0;
  height:6px;
  background:linear-gradient(100deg,var(--lime) 0%,var(--lime) 38%,rgba(168,240,75,0) 38%,rgba(168,240,75,0) 100%);
  z-index:3;
}

/* ============ 指标小条 ============ */
.metric-strip{
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  padding:26px 0;
}
.metric-strip .grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.metric-mini{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding-left:16px;
  border-left:3px solid rgba(168,240,75,.55);
}
.metric-mini .num{
  font-family:var(--num);
  font-size:clamp(26px,2.6vw,34px);
  font-weight:700;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  line-height:1;
  color:var(--ink);
}
.metric-mini .unit{
  font-size:13px;
  color:var(--ink-sub);
  font-weight:600;
  margin-left:-4px;
}
.metric-mini .label{
  font-size:13px;
  color:var(--ink-sub);
  line-height:1.5;
}

/* ============ 图文交替块 ============ */
.split-stack{
  display:flex;
  flex-direction:column;
  gap:48px;
}
.split-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  padding:28px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.split-block:hover{border-color:rgba(168,240,75,.8);box-shadow:var(--shadow-lift)}
.split-block:nth-child(even) .split-media{order:2}
.split-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--dark-2);
}
.split-media img{
  width:100%;
  height:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
  transition:transform .5s ease;
}
.split-block:hover .split-media img{transform:scale(1.03)}
.split-media .idx{
  position:absolute;
  top:12px;left:12px;
  height:26px;
  padding:0 10px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  background:rgba(12,18,14,.78);
  color:var(--lime);
  font-family:var(--num);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.04em;
}
.split-body{padding:4px 4px}
.split-body h3{margin-bottom:12px}
.split-body p{
  color:var(--ink-sub);
  font-size:15.5px;
  line-height:1.8;
  margin-bottom:16px;
}
.feature-list{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:20px;
}
.feature-list li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--lime);
}
.split-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  padding:8px 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:#FFFFFF;
  transition:border-color .18s ease,background .18s ease;
}
.split-link:hover{border-color:var(--lime);background:rgba(168,240,75,.10)}
.split-link:hover .arrow{transform:translateX(4px)}

/* ============ 内链分类区 ============ */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.cat-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#FFFFFF;
  box-shadow:var(--shadow);
  transition:border-color .2s ease,transform .2s ease;
}
.cat-card:hover{border-color:var(--lime);transform:translateY(-2px)}
.cat-card .badge{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(110,91,255,.10);
  color:var(--violet);
  font-size:11px;
  font-weight:700;
  letter-spacing:.03em;
}
.cat-card.is-current{
  background:var(--dark);
  border-color:rgba(168,240,75,.4);
  color:var(--dark-text);
}
.cat-card.is-current .badge{background:rgba(168,240,75,.16);color:var(--lime)}
.cat-card.is-current p{color:var(--dark-sub)}
.cat-card h3{font-size:18px}
.cat-card p{font-size:14px;color:var(--ink-sub);line-height:1.7}
.cat-card .go{
  margin-top:auto;
  font-size:13.5px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--ink);
}
.cat-card.is-current .go{color:var(--lime)}

/* ============ FAQ ============ */
.faq-wrap{
  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;
  background:transparent;
  border:0;
  padding:22px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:#000}
.faq-icon{
  position:relative;
  width:22px;height:22px;
  flex:0 0 22px;
  border-radius:50%;
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:1px;
  transition:transform .2s ease,background .2s ease;
}
.faq-icon::before{width:10px;height:2px;left:5.5px;top:9.5px}
.faq-icon::after{width:2px;height:10px;left:9.5px;top:5.5px}
.faq-item.is-open .faq-icon{background:var(--lime);border-color:var(--lime)}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a-inner{
  padding:0 0 24px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-sub);
  max-width:78ch;
}

/* ============ 转化表单 ============ */
.cta-section{padding:0 0 88px}
.cta-band{
  background:var(--dark);
  border-radius:var(--r-block);
  padding:48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:start;
  position:relative;
  overflow:hidden;
  border:1px solid var(--dark-line);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(110,91,255,.22),transparent 68%);
}
.cta-left{position:relative;z-index:2}
.cta-left h2{color:var(--dark-text);margin-bottom:14px}
.cta-left p{
  color:var(--dark-sub);
  font-size:15.5px;
  line-height:1.8;
  margin-bottom:22px;
  max-width:44ch;
}
.cta-points{display:flex;flex-direction:column;gap:12px}
.cta-points li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:var(--dark-text);
  font-size:14.5px;
  line-height:1.6;
}
.cta-points li::before{
  content:"";
  margin-top:8px;
  width:6px;height:6px;
  flex:0 0 6px;
  border-radius:2px;
  background:var(--lime);
}
.form-card{
  position:relative;
  z-index:2;
  background:#FFFFFF;
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:0 20px 48px -24px rgba(0,0,0,.55);
}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.field .req{color:var(--danger);margin-left:2px}
.field input,
.field select,
.field textarea{
  width:100%;
  height:44px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#FBFCF9;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{
  height:104px;
  padding:10px 12px;
  line-height:1.7;
  resize:vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  background:#FFFFFF;
  border-color:var(--lime);
  box-shadow:0 0 0 3px rgba(168,240,75,.28);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{border-color:var(--danger)}
.err-msg{
  display:none;
  margin-top:6px;
  font-size:12px;
  line-height:1.4;
  color:var(--danger);
}
.field.has-error .err-msg{display:block}
.form-note{
  margin-top:12px;
  font-size:12px;
  color:var(--ink-sub);
  line-height:1.6;
}
.form-status{
  display:none;
  margin-top:14px;
  padding:10px 12px;
  border-radius:var(--r-btn);
  background:rgba(47,191,113,.12);
  border:1px solid rgba(47,191,113,.4);
  color:#1D7A48;
  font-size:13.5px;
  line-height:1.6;
}
.form-status.show{display:block}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:var(--dark-sub);
  padding:64px 0 0;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  max-width:34ch;
  color:var(--dark-sub);
}
.footer-col h4{
  font-size:14px;
  color:var(--dark-text);
  margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;
  color:var(--dark-sub);
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--dark-sub)}
.footer-bottom{
  border-top:1px solid var(--dark-line);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:#7E8A7B;
}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  background:var(--dark);
  border-bottom:1px solid var(--dark-line);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:80;
}
.burger{
  width:40px;height:40px;
  border:1px solid var(--dark-line);
  border-radius:9px;
  background:transparent;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
}
.burger span{
  display:block;
  width:16px;height:2px;
  border-radius:2px;
  background:var(--dark-text);
  transition:transform .2s ease,opacity .2s ease;
}
.scrim{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.5);
  z-index:70;
  opacity:0;
  transition:opacity .24s ease;
}
body.nav-open .scrim{display:block;opacity:1}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .sidebar{--sidebar-w:248px}
}
@media (max-width:1199px) and (min-width:1024px){
  :root{--sidebar-w:76px}
  .sidebar{padding:22px 12px 20px;align-items:center}
  .sidebar-head{justify-content:center;padding-bottom:18px}
  .brand-name{display:none}
  .brand{gap:0}
  .side-nav{width:100%}
  .nav-item{
    justify-content:center;
    padding:0;
    height:46px;
  }
  .nav-item span{display:none}
  .sidebar-foot .btn{
    width:44px;
    padding:0;
    font-size:0;
    gap:0;
  }
  .sidebar-foot .btn::after{
    content:"+";
    font-size:18px;
    font-weight:700;
  }
  .sidebar-note{display:none}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px}
  .app-main{margin-left:0;padding-top:56px}
  .mobile-bar{display:flex}
  .sidebar{
    width:280px;
    transform:translateX(100%);
    padding:20px 16px;
    box-shadow:-18px 0 40px -20px rgba(0,0,0,.6);
  }
  .sidebar.is-open{transform:translateX(0)}
  .drawer-close{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:32px;height:32px;
    border-radius:8px;
    border:1px solid var(--dark-line);
    background:transparent;
    color:var(--dark-sub);
    font-size:18px;
    line-height:1;
    cursor:pointer;
  }
  .drawer-close:hover{color:var(--dark-text);border-color:rgba(255,255,255,.24)}
  .topbar{position:static}
  .section{padding:64px 0}
  .page-hero{padding:56px 0 52px}
  .split-block{grid-template-columns:1fr;gap:26px;padding:22px}
  .split-block:nth-child(even) .split-media{order:0}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cat-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px;gap:16px}
  .metric-strip .grid{grid-template-columns:1fr;gap:16px}
  .cat-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .page-hero h1{max-width:none}
  .cta-band{padding:24px;border-radius:16px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:16px;padding:18px 0}
}
@media (max-width:479px){
  body{font-size:15px}
  .container{padding:0 16px}
  .metric-mini{padding-left:12px}
  .split-block{padding:18px}
  .cta-band{padding:20px}
  .form-card{padding:18px}
  .brand-name{font-size:14px}
}

/* roulang page: category2 */
:root{
  --lime:#A8F04B;
  --lime-hover:#92DC33;
  --lime-active:#7FC61F;
  --violet:#6E5BFF;
  --amber:#FFB020;
  --danger:#E5484D;
  --success:#2FBF71;
  --dark:#0C120E;
  --dark-2:#101713;
  --dark-border:rgba(255,255,255,.08);
  --dark-text:#F2F5EE;
  --dark-sub:#A8B3A6;
  --light:#F6F7F3;
  --card:#FFFFFF;
  --line:#E3E7DE;
  --text:#12160F;
  --sub:#5A6259;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-lg:20px;
  --shadow-card:0 1px 2px rgba(16,23,19,.06),0 8px 24px -12px rgba(16,23,19,.18);
  --font:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --mono:'Barlow Condensed','DIN Alternate','Roboto Mono',ui-monospace,monospace;
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding-left:var(--sidebar-w);
  font-family:var(--font);font-size:16px;line-height:1.8;
  color:var(--text);background:var(--light);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:32px;height:32px;flex:none;border-radius:8px;
  background:var(--lime);color:#10230A;
  display:grid;place-items:center;
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:0;
}
.brand-name{font-size:15px;font-weight:700;color:var(--dark-text);white-space:nowrap;}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--dark);border-right:1px solid var(--dark-border);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;z-index:80;
  transition:transform .26s ease;
}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 4px;}
.sidebar-close{
  display:none;width:32px;height:32px;border:1px solid var(--dark-border);
  border-radius:8px;background:transparent;color:var(--dark-sub);
  font-size:18px;line-height:1;cursor:pointer;
}
.sidebar-close:hover{color:#fff;border-color:var(--lime);}
.nav{margin-top:30px;display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 16px;border-radius:10px;
  color:var(--dark-sub);font-size:14.5px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:1.6;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.active{background:rgba(168,240,75,.10);color:#fff;}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:2px;background:var(--lime);
}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--dark-border);}
.sidebar-foot .btn{width:100%;}
.sidebar-note{
  margin-top:14px;font-size:12px;line-height:1.7;color:#7E8A7B;
}
.sidebar-note strong{color:var(--dark-sub);font-weight:600;}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--dark);border-bottom:1px solid var(--dark-border);
}
.burger{
  width:40px;height:40px;border:1px solid var(--dark-border);border-radius:10px;
  background:transparent;display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:4px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--dark-text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:75;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ---------- 顶部面包屑 ---------- */
.topbar{
  height:56px;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--sub);flex-wrap:wrap;}
.crumb a{color:var(--sub);transition:color .16s ease;}
.crumb a:hover{color:var(--text);text-decoration:underline;text-decoration-color:var(--violet);text-underline-offset:3px;}
.crumb .sep{color:#B9C0B4;}
.crumb .current{color:var(--text);font-weight:600;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:#10230A;}
.btn-primary:hover{background:var(--lime-hover);transform:translateY(-1px);}
.btn-primary:active{background:var(--lime-active);transform:none;}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--dark-text);}
.btn-ghost:hover{border-color:var(--lime);color:#fff;}
.btn-ghost:active{transform:none;}
.btn-outline{background:#fff;border-color:var(--line);color:var(--text);}
.btn-outline:hover{border-color:var(--lime);background:#F4FBEA;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:0;
  background:none;border:0;color:var(--text);font-weight:600;font-size:14px;cursor:pointer;
  border-bottom:1px solid var(--violet);padding-bottom:2px;
  transition:border-color .18s ease,color .18s ease;
}
.btn-text:hover{border-color:var(--lime);color:#2C3A1E;}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--dark);color:var(--dark-text);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.26;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,rgba(12,18,14,.95) 0%,rgba(12,18,14,.82) 52%,rgba(12,18,14,.62) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;
  padding:80px 0 76px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(168,240,75,.14);color:var(--lime);
  font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;
  letter-spacing:-.01em;color:#fff;
}
.hero-sub{
  margin-top:18px;font-size:clamp(16px,1.5vw,19px);line-height:1.7;
  color:#DCE6D6;font-weight:500;
}
.hero-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--dark-sub);max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px;}
.hero-tags li{
  height:26px;display:inline-flex;align-items:center;padding:0 12px;
  border-radius:999px;border:1px solid var(--dark-border);
  font-size:12.5px;color:#C9D4C2;
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);border:1px solid var(--dark-border);
}
.hero-visual figcaption{
  margin-top:14px;font-size:12.5px;color:#8E9B88;line-height:1.7;
}
.hero-cut{
  position:relative;height:8px;background:var(--lime);
  clip-path:polygon(0 60%,100% 0,100% 40%,0 100%);
}

/* ---------- 指标小条 ---------- */
.metric-strip{background:#fff;border-bottom:1px solid var(--line);}
.metric-strip .inner{
  display:grid;grid-template-columns:repeat(3,1fr);
  padding:26px 0;gap:24px;
}
.metric-item{display:flex;align-items:baseline;gap:10px;padding-left:16px;border-left:3px solid rgba(168,240,75,.55);}
.metric-item .num{
  font-family:var(--mono);font-size:clamp(26px,2.6vw,36px);font-weight:700;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--text);line-height:1;
}
.metric-item .unit{font-size:13px;color:var(--sub);font-weight:600;}
.metric-item .lab{display:block;font-size:12.5px;color:var(--sub);margin-top:6px;line-height:1.6;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:#5F7A3A;padding-left:12px;position:relative;margin-bottom:14px;text-transform:uppercase;
}
.sec-kicker::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:14px;border-radius:2px;background:var(--lime);}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;}
.sec-head p{margin-top:14px;color:var(--sub);font-size:15.5px;line-height:1.85;}

/* ---------- 特性网格 2×3 ---------- */
.features{background:var(--light);}
.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  position:relative;overflow:hidden;
}
.feature-card::after{
  content:"";position:absolute;right:-30px;top:-30px;width:80px;height:80px;
  background:radial-gradient(circle,rgba(168,240,75,.28),transparent 68%);
  opacity:0;transition:opacity .24s ease;
}
.feature-card:hover{border-color:var(--lime);transform:translateY(-2px);box-shadow:0 2px 4px rgba(16,23,19,.06),0 16px 32px -18px rgba(16,23,19,.28);}
.feature-card:hover::after{opacity:1;}
.feature-icon{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  background:#F1F9E6;color:#3E6B14;margin-bottom:16px;
}
.feature-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;}
.feature-card h3{font-size:18px;line-height:1.4;margin-bottom:10px;}
.feature-card p{font-size:14.5px;line-height:1.8;color:var(--sub);margin-bottom:0;}
.feature-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;margin-top:16px;
  border-radius:999px;background:#F3F1FF;color:#4B3ACF;
  font-size:11px;font-weight:600;letter-spacing:.02em;
}
.feature-tag.amber{background:#FFF6E6;color:#9A6200;}

/* ---------- 长文段落区 ---------- */
.longform{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.longform-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:start;}
.longform-body p{font-size:16px;line-height:1.9;color:#2C332A;}
.longform-body h3{
  font-size:19px;margin:32px 0 12px;padding-left:14px;position:relative;
}
.longform-body h3::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--lime);
}
.aside-card{
  background:var(--light);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;position:sticky;top:24px;
}
.aside-card h4{font-size:16px;margin-bottom:14px;}
.check-list li{
  position:relative;padding-left:26px;font-size:14px;line-height:1.8;color:var(--sub);margin-bottom:12px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:3px;
  background:var(--lime);
}

/* ---------- 内链区 ---------- */
.crosslinks{background:var(--light);}
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.link-card{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;transition:border-color .2s ease,transform .2s ease;
}
.link-card:hover{border-color:var(--lime);transform:translateY(-2px);}
.link-card img{
  width:64px;height:64px;flex:none;object-fit:cover;border-radius:var(--radius-img);
}
.link-card h4{font-size:16px;line-height:1.4;margin-bottom:6px;}
.link-card p{font-size:13px;line-height:1.7;color:var(--sub);margin:0;}
.link-card .arrow{margin-left:auto;color:var(--violet);transition:transform .2s ease,color .2s ease;}
.link-card:hover .arrow{transform:translateX(4px);color:var(--lime-active);}

/* ---------- FAQ ---------- */
.faq{background:#fff;}
.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:20px;
  background:none;border:0;padding:22px 0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.5;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:#3E6B14;}
.faq-q .ico{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform .2s ease;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;background:var(--text);border-radius:2px;
  left:50%;top:50%;transition:background .18s ease;
}
.faq-q .ico::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-q .ico::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-item.open .faq-q .ico{transform:rotate(135deg);}
.faq-item.open .faq-q .ico::before,.faq-item.open .faq-q .ico::after{background:var(--lime-active);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-item.open .faq-a{max-height:460px;}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--sub);max-width:820px;}

/* ---------- 转化区 ---------- */
.cta-section{background:var(--light);padding:88px 0;}
.cta-box{
  background:var(--dark);border:1px solid var(--dark-border);border-radius:var(--radius-lg);
  padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
  position:relative;overflow:hidden;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-3.webp) center/cover no-repeat;opacity:.12;
}
.cta-box > *{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);color:#fff;line-height:1.3;}
.cta-copy p{margin-top:14px;color:var(--dark-sub);font-size:15px;line-height:1.85;}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#C9D4C2;line-height:1.7;}
.cta-points li::before{
  content:"";flex:none;width:8px;height:8px;margin-top:8px;border-radius:2px;background:var(--lime);
}
.form-card{
  background:#fff;border-radius:var(--radius-card);padding:28px;
}
.form-card h3{font-size:17px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--sub);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;color:#2C332A;}
.field label .req{color:var(--danger);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#FCFDFB;font-size:14.5px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--lime);background:#fff;
  box-shadow:0 0 0 3px rgba(168,240,75,.24);
}
.field.error input,.field.error select,.field.error textarea{border-color:var(--danger);background:#FFF7F7;}
.err-msg{display:none;margin-top:6px;font-size:12px;color:var(--danger);line-height:1.6;}
.field.error .err-msg{display:block;}
.form-submit{width:100%;margin-top:6px;}
.form-note{margin-top:14px;font-size:12px;color:var(--sub);line-height:1.7;}
.form-success{
  display:none;margin-top:14px;padding:12px 14px;border-radius:10px;
  background:#EDF9F1;border:1px solid #BFE8CE;color:#1F7F4C;font-size:13.5px;
}
.form-success.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);color:var(--dark-sub);padding:64px 0 0;
  border-top:1px solid var(--dark-border);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.85;color:#7E8A7B;max-width:300px;}
.footer-col h4{font-size:14px;color:var(--dark-text);margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--dark-sub);transition:color .18s ease;}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:13.5px;line-height:1.9;color:#7E8A7B;}
.footer-bottom{
  border-top:1px solid var(--dark-border);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#6E7A6B;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px) and (min-width:1024px){
  :root{--sidebar-w:76px;}
  .sidebar{padding:24px 10px 20px;align-items:center;}
  .sidebar-head{justify-content:center;}
  .brand-name{display:none;}
  .nav{width:100%;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item .nav-label{display:none;}
  .nav-item.tip::after{
    content:attr(data-label);position:absolute;left:64px;top:50%;transform:translateY(-50%);
    background:#182018;color:#fff;font-size:12px;padding:5px 10px;border-radius:6px;
    white-space:nowrap;opacity:0;visibility:hidden;transition:opacity .16s ease;pointer-events:none;
    border:1px solid var(--dark-border);z-index:5;
  }
  .nav-item.tip:hover::after{opacity:1;visibility:visible;}
  .sidebar-foot .btn{padding:0;width:44px;}
  .sidebar-foot .btn .btn-label{display:none;}
  .sidebar-note{display:none;}
}
@media (max-width:1023px){
  body{padding-left:0;padding-top:56px;}
  .sidebar{
    width:280px;transform:translateX(-100%);
    box-shadow:0 0 40px rgba(0,0,0,.5);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar-close{display:block;}
  .mobile-bar{display:flex;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 56px;}
  .hero-visual{order:-1;}
  .hero-visual img{aspect-ratio:16/10;}
  .longform-wrap{grid-template-columns:1fr;gap:36px;}
  .aside-card{position:static;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .link-grid{grid-template-columns:1fr 1fr;}
  .cta-box{grid-template-columns:1fr;gap:32px;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .cta-section{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:15px;}
  .metric-strip .inner{grid-template-columns:1fr;gap:16px;padding:22px 0;}
  .metric-item .num{font-size:30px;}
  .feature-grid{grid-template-columns:1fr;}
  .link-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .cta-box{padding:28px 20px;border-radius:16px;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .section{padding:48px 0;}
  .cta-section{padding:48px 0;}
  .faq-q{font-size:16px;}
  .topbar{height:auto;min-height:52px;padding:10px 0;}
}
@media (max-width:479px){
  .hero h1{font-size:28px;}
  .metric-strip .inner{grid-template-columns:1fr 1fr;gap:16px;}
  .metric-item{padding-left:12px;}
  .metric-item .num{font-size:26px;}
  .footer-grid{gap:22px;}
}

/* roulang page: category3 */
:root{
  --lime:#A8F04B;
  --lime-hover:#92DC33;
  --lime-active:#7FC61F;
  --violet:#6E5BFF;
  --amber:#FFB020;
  --red:#E5484D;
  --green:#2FBF71;
  --dark:#0C120E;
  --dark-2:#101713;
  --dark-line:rgba(255,255,255,.08);
  --dark-text:#F2F5EE;
  --dark-muted:#A8B3A6;
  --light:#F6F7F3;
  --card:#FFFFFF;
  --border:#E3E7DE;
  --text:#12160F;
  --muted:#5A6259;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-block:20px;
  --shadow-card:0 1px 2px rgba(16,23,19,.06),0 8px 24px -12px rgba(16,23,19,.18);
  --sidebar-w:248px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'Barlow Condensed','DIN Alternate','Roboto Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--light);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--dark);
  border-right:1px solid var(--dark-line);
  display:flex;
  flex-direction:column;
  padding:22px 16px 18px;
  z-index:60;
  transition:transform .26s ease,width .26s ease;
}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 4px;margin-bottom:26px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  border-radius:8px;
  background:var(--lime);
  color:#10230A;
  font-family:var(--font-num);
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-name{
  font-size:15px;font-weight:700;color:var(--dark-text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav .nav-label{
  font-size:11px;letter-spacing:.14em;color:#6C7A6B;
  padding:0 16px;margin-bottom:8px;text-transform:uppercase;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  color:var(--dark-muted);
  font-size:14.5px;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(168,240,75,.10);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--lime);
}
.sidebar-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--dark-line)}
.sidebar-foot p{font-size:12px;line-height:1.6;color:#7E8A7B;margin-top:10px;padding:0 4px}
.drawer-close{
  display:none;
  width:32px;height:32px;border-radius:8px;
  border:1px solid var(--dark-line);background:transparent;color:var(--dark-muted);
  font-size:18px;line-height:1;
}
.drawer-close:hover{color:#fff;border-color:rgba(255,255,255,.2)}
.overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transition:opacity .24s ease;z-index:55;
}
.overlay.show{opacity:1;visibility:visible}

/* ============ 移动顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--dark);
  border-bottom:1px solid var(--dark-line);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:50;
}
.burger{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--dark-line);
  background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:#DDE5D8;transition:transform .2s ease,opacity .2s ease}
.burger:hover span{background:var(--lime)}

/* ============ 主区 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.topbar{
  height:56px;
  background:var(--light);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;
  position:sticky;top:0;z-index:30;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.crumb a{color:var(--muted);transition:color .18s ease}
.crumb a:hover{color:var(--text);text-decoration:underline;text-decoration-color:var(--violet);text-underline-offset:3px}
.crumb .sep{color:#B9C0B4}
.crumb .current{color:var(--text);font-weight:600}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--lime);color:#10230A}
.btn-primary:hover{background:var(--lime-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--lime-active);transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--dark-text);border-color:rgba(255,255,255,.22)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn-outline{background:transparent;color:var(--text);border-color:var(--border)}
.btn-outline:hover{border-color:var(--lime);color:#10230A;background:rgba(168,240,75,.14)}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--text);
  text-decoration:underline;text-decoration-color:var(--violet);text-underline-offset:4px;
  transition:color .18s ease,text-decoration-color .18s ease;
}
.link-more:hover{color:#3E4A38;text-decoration-color:var(--lime)}

/* ============ Hero ============ */
.hero{
  position:relative;
  background-color:var(--dark);
  background-image:linear-gradient(115deg,rgba(12,18,14,.94) 0%,rgba(12,18,14,.82) 52%,rgba(16,23,19,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  color:var(--dark-text);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:4px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--lime) 34%,var(--violet) 34%,var(--violet) 42%,transparent 42%);
  transform:skewY(-.6deg);opacity:.9;
}
.hero-grid{
  display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;
  padding:76px 0 82px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(168,240,75,.12);
  border:1px solid rgba(168,240,75,.3);
  color:var(--lime);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--lime)}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;font-weight:800;letter-spacing:-.01em;
  margin:20px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--lime)}
.hero-sub{font-size:18px;font-weight:600;color:#DDE6D9;margin-bottom:14px}
.hero-text{font-size:15.5px;line-height:1.85;color:var(--dark-muted);max-width:520px}
.hero-actions{display:flex;gap:12px;margin:30px 0 26px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap}
.hero-tags li{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--dark-line);
  font-size:12.5px;color:#C9D3C5;
}
.hero-tags li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--lime)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--dark-line);
}
.hero-card{
  position:absolute;left:-18px;bottom:-20px;
  background:var(--dark-2);
  border:1px solid var(--dark-line);
  border-radius:var(--radius-card);
  padding:14px 18px;
  min-width:190px;
}
.hero-card .hc-label{font-size:11.5px;color:var(--dark-muted);letter-spacing:.06em}
.hero-card .hc-value{font-size:26px;font-weight:700;color:var(--lime);font-family:var(--font-num);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-card .hc-value small{font-size:13px;color:var(--dark-muted);font-family:var(--font-cn);font-weight:500;margin-left:4px}

/* ============ 指标小条 ============ */
.mini-metrics{border-bottom:1px solid var(--border);background:var(--light)}
.mini-metrics-inner{
  display:grid;grid-template-columns:repeat(3,1fr);
  padding:26px 0;gap:24px;
}
.mini-item{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.mini-item .mv{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(26px,2.6vw,34px);font-weight:700;letter-spacing:-.02em;color:var(--text)}
.mini-item .mv small{font-size:14px;font-family:var(--font-cn);font-weight:600;color:var(--muted);margin-left:3px}
.mini-item .ml{font-size:13px;color:var(--muted)}
.mini-item + .mini-item{border-left:1px solid var(--border);padding-left:24px}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-dark{background:var(--dark);color:var(--dark-text)}
.section-tint{
  background-color:var(--light);
  background-image:linear-gradient(rgba(18,22,15,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(18,22,15,.045) 1px,transparent 1px);
  background-size:36px 36px;
}
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;
  margin-bottom:14px;
}
.sec-kicker::before{content:"";width:18px;height:2px;background:var(--lime)}
.section-dark .sec-kicker{color:var(--dark-muted)}
.sec-head h2{
  font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
  margin-bottom:14px;
}
.sec-head p{font-size:15.5px;color:var(--muted);line-height:1.85}
.section-dark .sec-head p{color:var(--dark-muted)}

/* ============ 时间线 ============ */
.timeline{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px;
  margin-top:8px;
}
.tl-step{position:relative;padding-top:52px}
.tl-step::before{
  content:"";position:absolute;top:16px;left:38px;right:-20px;height:1px;
  background:rgba(255,255,255,.16);
}
.tl-step:last-child::before{display:none}
.tl-num{
  position:absolute;top:0;left:0;
  width:34px;height:34px;border-radius:50%;
  background:rgba(168,240,75,.14);
  border:1px solid rgba(168,240,75,.45);
  color:var(--lime);
  font-family:var(--font-num);font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.tl-step h3{font-size:17px;font-weight:700;color:var(--dark-text);margin-bottom:10px;line-height:1.4}
.tl-step p{font-size:14px;line-height:1.75;color:var(--dark-muted)}
.tl-step .tl-meta{
  display:inline-block;margin-top:12px;font-size:11.5px;
  padding:2px 10px;border-radius:999px;
  background:rgba(110,91,255,.18);color:#BDB4FF;border:1px solid rgba(110,91,255,.3);
}

/* ============ 对照条块 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 48px}
.compare-item{padding:22px 24px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}
.compare-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px}
.compare-head h3{font-size:16px;font-weight:700}
.compare-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.02em}
.bar-track{height:8px;border-radius:999px;background:#ECEFF0;background:#EBEFE7;overflow:hidden;position:relative}
.bar-base{position:absolute;inset:0;background:#E1E6DD;border-radius:999px}
.bar-fill{
  position:relative;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--lime-hover) 100%);
  width:var(--w,80%);
}
.compare-note{font-size:12.5px;line-height:1.7;color:var(--muted);margin-top:10px}
.compare-legend{display:flex;gap:20px;margin-top:26px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.compare-legend span{display:inline-flex;align-items:center;gap:7px}
.legend-swatch{width:14px;height:8px;border-radius:999px;display:inline-block}
.legend-swatch.base{background:#E1E6DD}
.legend-swatch.fill{background:var(--lime)}

/* ============ 保障模块（非对称） ============ */
.guard-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:32px;align-items:stretch}
.guard-main{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;display:flex;flex-direction:column;
}
.guard-main img{width:100%;height:260px;object-fit:cover;border-radius:0}
.guard-main .gm-body{padding:26px 26px 28px}
.guard-main h3{font-size:20px;font-weight:700;margin-bottom:12px;line-height:1.35}
.guard-main p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.guard-list{display:flex;flex-direction:column;gap:14px}
.guard-card{
  display:flex;gap:16px;
  padding:22px 24px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease,transform .18s ease;
}
.guard-card:hover{border-color:var(--lime);transform:translateY(-2px)}
.guard-ico{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;
  background:rgba(168,240,75,.16);
  display:flex;align-items:center;justify-content:center;
}
.guard-ico svg{width:22px;height:22px;stroke:#3D6A14;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.guard-card h4{font-size:16px;font-weight:700;margin-bottom:6px}
.guard-card p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ 内链分类 ============ */
.cat-links{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-link{
  display:block;padding:22px 24px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease,transform .18s ease;
}
.cat-link:hover{border-color:var(--lime);transform:translateY(-2px)}
.cat-link .cl-tag{font-size:11.5px;font-weight:600;color:#4B3FD6;background:rgba(110,91,255,.1);border-radius:999px;padding:2px 10px;display:inline-block;margin-bottom:10px}
.cat-link h4{font-size:16px;font-weight:700;margin-bottom:8px}
.cat-link p{font-size:13px;color:var(--muted);line-height:1.7}
.cat-link .cl-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:600;color:var(--text);transition:transform .18s ease}
.cat-link:hover .cl-arrow{transform:translateX(4px);color:#2F5E0E}

/* ============ FAQ ============ */
.faq{max-width:880px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;padding:22px 4px 22px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:#2F5E0E}
.faq-icon{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  position:relative;transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--text);border-radius:2px;
}
.faq-icon::before{width:11px;height:1.6px}
.faq-icon::after{width:1.6px;height:11px;transition:transform .2s ease,opacity .2s ease}
.faq-item.open .faq-icon{background:rgba(168,240,75,.2);border-color:var(--lime);transform:rotate(180deg)}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a-inner{padding:0 44px 24px 0;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ============ 表单 ============ */
.contact-wrap{
  background:var(--dark);
  border-radius:var(--radius-block);
  border:1px solid var(--dark-line);
  padding:52px;
  display:grid;grid-template-columns:1fr .92fr;gap:48px;align-items:start;
  color:var(--dark-text);
}
.contact-copy h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;margin-bottom:16px}
.contact-copy p{font-size:15px;color:var(--dark-muted);line-height:1.85;margin-bottom:24px}
.contact-points{display:flex;flex-direction:column;gap:14px}
.contact-points li{display:flex;gap:12px;font-size:14.5px;color:#D3DCCF;line-height:1.7}
.contact-points li .pt{
  width:20px;height:20px;flex:0 0 20px;border-radius:50%;
  border:1px solid rgba(168,240,75,.5);
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.contact-points li .pt::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime)}
.form-card{background:#fff;border-radius:var(--radius-card);padding:28px;color:var(--text)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:7px}
.field label .req{color:var(--red);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;height:44px;
  border:1px solid var(--border);border-radius:var(--radius-btn);
  padding:0 14px;font-size:14.5px;font-family:inherit;color:var(--text);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235A6259' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(168,240,75,.32);
}
.field .err{display:none;font-size:12px;line-height:1.5;color:var(--red);margin-top:6px}
.field.invalid input,.field.invalid select{border-color:var(--red)}
.field.invalid .err{display:block}
.form-note{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--radius-btn);
  background:#F1F7E8;border:1px solid #D5E8B8;color:#2F5E0E;font-size:13px;line-height:1.7;
}
.form-note.show{display:block}
.form-tip{font-size:12px;color:var(--muted);line-height:1.6;margin-top:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-muted);padding:64px 0 26px;margin-top:auto;border-top:1px solid var(--dark-line)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:13.5px;line-height:1.85;color:var(--dark-muted);max-width:280px}
.footer-col h4{font-size:13px;font-weight:700;color:var(--dark-text);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:13.5px;color:var(--dark-muted);transition:color .18s ease}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:13px;line-height:1.85;color:var(--dark-muted)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--dark-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7E8A7B;
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .hero-grid{gap:44px}
}
@media (max-width:1199px){
  :root{--sidebar-w:76px}
  .sidebar{padding:22px 10px 18px;align-items:center}
  .brand-name,.side-nav .nav-label,.nav-item span,.sidebar-foot p{display:none}
  .sidebar-head{justify-content:center;margin-bottom:22px}
  .nav-item{justify-content:center;padding:0;width:48px}
  .nav-item.active::before{left:-10px}
  .sidebar-foot .btn{padding:0;width:48px}
  .sidebar-foot .btn span{display:none}
  .sidebar-foot .btn::after{content:"＋";font-size:18px;line-height:1}
  .compare-grid{gap:22px 32px}
  .contact-wrap{padding:40px;gap:32px}
}
@media (max-width:1023px){
  .sidebar{
    width:280px;padding:22px 16px 18px;align-items:stretch;
    transform:translateX(-100%);
    box-shadow:0 24px 60px rgba(0,0,0,.4);
  }
  .sidebar.open{transform:translateX(0)}
  .brand-name,.side-nav .nav-label,.nav-item span,.sidebar-foot p{display:block}
  .sidebar-head{justify-content:space-between}
  .nav-item{justify-content:flex-start;padding:0 16px;width:auto}
  .nav-item.active::before{left:0}
  .sidebar-foot .btn{width:100%;padding:0 20px}
  .sidebar-foot .btn::after{content:none}
  .sidebar-foot .btn span{display:inline}
  .drawer-close{display:flex;align-items:center;justify-content:center}
  .main{margin-left:0;padding-top:56px}
  .mobile-bar{display:flex}
  .topbar{top:56px}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:56px 0 64px}
  .hero-text{max-width:none}
  .hero-visual{order:-1}
  .hero-visual img{aspect-ratio:16/9}
  .hero-card{left:auto;right:14px;bottom:-16px}
  .section{padding:64px 0}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .tl-step::before{display:none}
  .compare-grid{grid-template-columns:1fr}
  .guard-grid{grid-template-columns:1fr}
  .cat-links{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:15px}
  .hero h1{font-size:clamp(27px,7vw,36px)}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .mini-metrics-inner{grid-template-columns:1fr 1fr;gap:18px;padding:22px 0}
  .mini-item + .mini-item{border-left:0;padding-left:0}
  .mini-item:nth-child(2){border-left:1px solid var(--border);padding-left:18px}
  .mini-item:nth-child(3){grid-column:1/-1;border-top:1px solid var(--border);padding-top:16px}
  .section{padding:48px 0}
  .sec-head{margin-bottom:32px}
  .timeline{grid-template-columns:1fr;gap:22px}
  .tl-step{padding-top:46px;padding-left:0}
  .faq-q{font-size:15.5px;padding:18px 0}
  .faq-a-inner{padding-right:0}
  .contact-wrap{padding:24px 20px;border-radius:16px}
  .form-card{padding:22px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:32px}
  .guard-main img{height:200px}
  .guard-main .gm-body{padding:20px 18px 22px}
  .guard-card{padding:18px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .mini-metrics-inner{grid-template-columns:1fr 1fr;gap:14px}
  .mini-item .mv{font-size:24px}
  .hero-card{position:static;margin-top:14px;min-width:0}
  .cat-links{gap:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}