/* roulang page: index */
:root{
  --bg:#050b18;
  --bg-2:#081226;
  --panel:rgba(17,30,56,.66);
  --panel-soft:rgba(13,23,41,.72);
  --line:rgba(108,152,232,.20);
  --line-strong:rgba(108,152,232,.42);
  --text:#e9effb;
  --muted:#9db0d2;
  --primary:#2f7dff;
  --primary-2:#4f9bff;
  --accent:#22d3ee;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(3,10,26,.55);
  --glow:0 10px 30px rgba(47,125,255,.32);
  --space:26px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 620px at 50% -12%, rgba(47,125,255,.22), transparent 62%),
    radial-gradient(900px 520px at 88% 6%, rgba(34,211,238,.12), transparent 58%),
    var(--bg);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary-2);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--accent);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 14px;}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.4;font-weight:700;letter-spacing:.2px;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.site-container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,11,24,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:14px;padding-bottom:14px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);min-width:0;}
.brand:hover{color:var(--text);}
.brand-mark{width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;font-size:17px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:var(--glow);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:18px;letter-spacing:.5px;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:.6px;white-space:nowrap;}
.site-nav{display:flex;align-items:center;gap:6px;}
.site-nav a{padding:9px 15px;border-radius:999px;color:var(--muted);font-size:15px;font-weight:500;border:1px solid transparent;transition:all .22s ease;}
.site-nav a:hover{color:var(--text);background:rgba(47,125,255,.12);border-color:var(--line);}
.site-nav a.active{color:var(--text);background:rgba(47,125,255,.18);border-color:var(--line-strong);}
.site-nav a.nav-cta{color:#fff;background:linear-gradient(135deg,var(--primary),#1b5ce0);box-shadow:var(--glow);margin-left:8px;}
.site-nav a.nav-cta:hover{filter:brightness(1.1);color:#fff;}
.nav-toggle{display:none;width:44px;height:42px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(47,125,255,.12);color:var(--text);font-size:17px;align-items:center;justify-content:center;cursor:pointer;transition:background .2s ease;}
.nav-toggle:hover{background:rgba(47,125,255,.24);}

/* ---------- step bar ---------- */
.step-bar{border-top:1px solid var(--line);background:rgba(8,18,38,.6);}
.step-inner{display:flex;align-items:center;gap:10px;padding-top:9px;padding-bottom:9px;overflow-x:auto;scrollbar-width:none;}
.step-inner::-webkit-scrollbar{display:none;}
.step-item{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-size:13.5px;white-space:nowrap;transition:all .22s ease;}
.step-item:hover{color:var(--text);border-color:var(--line-strong);background:rgba(47,125,255,.12);}
.step-no{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:11.5px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));}
.step-sep{flex:0 0 16px;height:1px;background:linear-gradient(90deg,var(--line-strong),transparent);}

/* ---------- hero ---------- */
.hero{padding:74px 0 64px;position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;inset:auto 0 -1px 0;height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);}
.hero-inner{text-align:center;max-width:920px;margin:0 auto;}
.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(47,125,255,.12);color:#cfdcff;font-size:13px;letter-spacing:.4px;margin-bottom:22px;}
.hero-badge i{color:var(--accent);}
.hero h1{font-size:clamp(27px,4vw,44px);line-height:1.32;margin-bottom:20px;letter-spacing:.5px;}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--primary-2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{max-width:820px;margin:0 auto 30px;color:var(--muted);font-size:16.5px;text-align:left;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:34px;}
.btn-main,.btn-ghost{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:999px;font-size:15.5px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;}
.btn-main{color:#fff;background:linear-gradient(135deg,var(--primary),#1b5ce0);box-shadow:var(--glow);}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(47,125,255,.46);color:#fff;}
.btn-main:active{transform:translateY(0);}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong);}
.btn-ghost:hover{background:rgba(47,125,255,.16);color:#fff;transform:translateY(-2px);}
.hero-search{display:flex;align-items:center;gap:10px;max-width:640px;margin:0 auto 22px;padding:8px 8px 8px 18px;border-radius:999px;border:1px solid var(--line-strong);background:var(--panel);backdrop-filter:blur(12px);box-shadow:var(--shadow);}
.hero-search i{color:var(--muted);font-size:15px;}
.hero-search input{flex:1 1 auto;min-width:0;background:transparent;border:0;color:var(--text);font-size:15px;padding:9px 2px;outline:none;}
.hero-search input::placeholder{color:#7d90b3;}
.hero-search button{flex:0 0 auto;padding:10px 24px;border-radius:999px;border:0;color:#fff;font-size:15px;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--accent));cursor:pointer;transition:filter .2s ease;}
.hero-search button:hover{filter:brightness(1.12);}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-items:center;margin-bottom:8px;}
.chip-label{font-size:13px;color:var(--muted);letter-spacing:.5px;}
.chip{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--muted);font-size:13.5px;transition:all .2s ease;}
.chip:hover{color:#fff;border-color:var(--line-strong);background:rgba(47,125,255,.18);}
.hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:38px;text-align:left;}
.hero-point{min-width:0;padding:18px 20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(10px);}
.hero-point h3{font-size:15px;margin-bottom:6px;color:#fff;display:flex;align-items:center;gap:8px;}
.hero-point h3 i{color:var(--accent);font-size:14px;}
.hero-point p{font-size:13.8px;color:var(--muted);margin:0;line-height:1.7;}

/* ---------- sections ---------- */
.section{padding:72px 0;}
.section--alt{background:rgba(8,18,38,.55);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:820px;margin:0 auto 40px;text-align:center;}
.sec-head.left{margin-left:0;text-align:left;}
.sec-tag{display:inline-block;padding:5px 14px;border-radius:999px;font-size:12.5px;color:var(--accent);border:1px solid rgba(34,211,238,.32);background:rgba(34,211,238,.09);letter-spacing:.6px;margin-bottom:14px;}
.sec-title{font-size:clamp(21px,2.7vw,29px);margin-bottom:14px;}
.sec-desc{color:var(--muted);font-size:15.5px;margin:0;}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space);}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space);}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.grid-2 > *,.grid-3 > *,.grid-4 > *{min-width:0;}

.site-card{padding:26px 24px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(12px);box-shadow:var(--shadow);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;height:100%;}
.site-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 52px rgba(3,10,26,.62);}
.card-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:17px;color:#fff;background:linear-gradient(135deg,rgba(47,125,255,.9),rgba(34,211,238,.85));margin-bottom:16px;}
.site-card h3{font-size:17.5px;margin-bottom:10px;}
.site-card p{font-size:14.3px;color:var(--muted);margin:0;}

/* ---------- summary ---------- */
.summary-card{padding:28px 26px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel-soft);backdrop-filter:blur(12px);box-shadow:var(--shadow);}
.summary-list{display:grid;gap:14px;}
.summary-item{display:flex;gap:12px;align-items:flex-start;font-size:14.8px;color:#c8d6ef;}
.summary-item i{color:var(--accent);margin-top:5px;font-size:13px;}
.summary-item b{color:#fff;font-weight:600;}

/* ---------- point strip ---------- */
.point-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.point-box{min-width:0;padding:20px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(255,255,255,.03);transition:border-color .2s ease,background .2s ease;}
.point-box:hover{border-color:var(--line-strong);background:rgba(47,125,255,.1);}
.point-box span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--accent);margin-bottom:8px;}
.point-box p{margin:0;font-size:13.8px;color:var(--muted);line-height:1.7;}

/* ---------- outline / directory ---------- */
.outline{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.outline-group{padding:24px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel);min-width:0;}
.outline-group h3{font-size:16.5px;display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.outline-group h3 i{color:var(--primary-2);font-size:15px;}
.outline-group li{position:relative;padding-left:18px;font-size:14.2px;color:var(--muted);margin-bottom:10px;line-height:1.7;}
.outline-group li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));}
.outline-group li b{color:#dbe6fb;font-weight:600;}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel-soft);box-shadow:var(--shadow);}
.compare-table{width:100%;border-collapse:collapse;min-width:640px;}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;font-size:14.3px;border-bottom:1px solid var(--line);vertical-align:top;}
.compare-table th{color:#fff;background:rgba(47,125,255,.16);font-weight:600;font-size:14px;white-space:nowrap;}
.compare-table td{color:var(--muted);}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr:hover td{background:rgba(47,125,255,.08);color:#c9d8f2;}
.table-note{margin-top:14px;font-size:13.2px;color:#8399bd;}

/* ---------- steps flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:flow;}
.flow-item{position:relative;min-width:0;padding:24px 20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);}
.flow-item::before{counter-increment:flow;content:"0" counter(flow);display:block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--accent);margin-bottom:10px;}
.flow-item h3{font-size:16px;margin-bottom:8px;}
.flow-item p{font-size:13.9px;color:var(--muted);margin:0;}

/* ---------- download ---------- */
.download-panel{padding:38px 34px;border-radius:24px;border:1px solid var(--line-strong);background:linear-gradient(150deg,rgba(47,125,255,.18),rgba(34,211,238,.08) 55%,rgba(13,23,41,.9));backdrop-filter:blur(14px);box-shadow:0 26px 60px rgba(3,10,26,.6);}
.download-panel .sec-head{margin-bottom:28px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.dl-btn{display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:var(--radius);border:1px solid var(--line-strong);background:rgba(255,255,255,.05);color:var(--text);transition:transform .22s ease,background .22s ease,box-shadow .22s ease;min-width:0;}
.dl-btn:hover{transform:translateY(-3px);background:rgba(47,125,255,.22);color:#fff;box-shadow:0 16px 38px rgba(47,125,255,.34);}
.dl-btn i{font-size:22px;color:var(--accent);flex:0 0 auto;}
.dl-btn span{display:flex;flex-direction:column;line-height:1.4;min-width:0;}
.dl-btn strong{font-size:16px;}
.dl-btn small{font-size:12.5px;color:var(--muted);}
.download-note{margin-top:20px;font-size:13.2px;color:#93a8c9;}

/* ---------- category entry ---------- */
.cat-wall{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.cat-card{display:block;padding:28px 26px;border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:linear-gradient(140deg,rgba(47,125,255,.2),rgba(13,23,41,.9));color:var(--text);transition:transform .22s ease,box-shadow .22s ease;min-width:0;}
.cat-card:hover{transform:translateY(-4px);color:#fff;box-shadow:0 22px 52px rgba(47,125,255,.28);}
.cat-card h3{font-size:19px;margin-bottom:10px;}
.cat-card p{color:var(--muted);font-size:14.2px;margin-bottom:16px;}
.cat-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--accent);font-weight:600;}
.cat-note{padding:24px 22px;border-radius:var(--radius-lg);border:1px dashed var(--line-strong);background:rgba(255,255,255,.02);font-size:14px;color:var(--muted);}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:28px;}
.news-list{display:grid;gap:16px;}
.news-card{display:block;padding:22px 24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);transition:border-color .22s ease,transform .22s ease,background .22s ease;color:var(--text);min-width:0;}
.news-card:hover{transform:translateX(4px);border-color:var(--line-strong);background:rgba(47,125,255,.12);color:var(--text);}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;font-size:12.6px;color:#8ea4c8;}
.news-meta .tag{padding:3px 10px;border-radius:999px;border:1px solid rgba(34,211,238,.3);background:rgba(34,211,238,.1);color:var(--accent);}
.news-card h3{font-size:16.8px;margin-bottom:8px;}
.news-excerpt{font-size:14px;color:var(--muted);margin:0;}
.news-empty{padding:30px 24px;border-radius:var(--radius);border:1px dashed var(--line-strong);color:var(--muted);font-size:14.5px;text-align:center;}
.side-panel{padding:24px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel-soft);height:100%;min-width:0;}
.side-panel h3{font-size:16.5px;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.side-panel h3 i{color:var(--accent);font-size:14px;}
.side-list li{padding:12px 0;border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{display:block;font-size:14.2px;color:#c6d5ef;line-height:1.6;}
.side-list a:hover{color:var(--accent);}
.side-time{display:block;font-size:12.4px;color:#7f94b8;margin-top:4px;}

/* ---------- topics ---------- */
.topic-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.topic-pill{padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:14px;color:#c3d2ec;transition:all .2s ease;}
.topic-pill:hover{border-color:var(--line-strong);color:#fff;background:rgba(47,125,255,.16);}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;position:relative;}
.tl-item{min-width:0;padding:22px 20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);position:relative;}
.tl-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 0 4px rgba(47,125,255,.18);margin-bottom:14px;}
.tl-item h3{font-size:15.8px;margin-bottom:8px;}
.tl-item p{font-size:13.8px;color:var(--muted);margin:0;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:940px;margin:0 auto;}
.faq-item{border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);overflow:hidden;}
.faq-item summary{list-style:none;cursor:pointer;padding:19px 24px;font-size:15.8px;font-weight:600;color:#eaf1fd;display:flex;align-items:center;justify-content:space-between;gap:14px;transition:background .2s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(47,125,255,.1);}
.faq-item summary::after{content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--accent);flex:0 0 auto;transition:transform .25s ease;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 24px 20px;font-size:14.4px;color:var(--muted);}

/* ---------- guarantee ---------- */
.guarantee{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.gua-item{min-width:0;padding:22px 20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel-soft);text-align:center;}
.gua-item i{font-size:20px;color:var(--accent);margin-bottom:12px;display:block;}
.gua-item h3{font-size:15.2px;margin-bottom:8px;}
.gua-item p{font-size:13.5px;color:var(--muted);margin:0;}

/* ---------- final cta ---------- */
.final-cta{padding:46px 34px;border-radius:24px;border:1px solid var(--line-strong);text-align:center;background:linear-gradient(150deg,rgba(34,211,238,.1),rgba(47,125,255,.16) 50%,rgba(13,23,41,.92));box-shadow:0 26px 60px rgba(3,10,26,.58);}
.final-cta h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:14px;}
.final-cta p{max-width:760px;margin:0 auto 26px;color:var(--muted);font-size:15px;}
.final-cta .hero-actions{margin-bottom:0;}

/* ---------- friend links ---------- */
.friend-links{padding:34px 0;border-top:1px solid var(--line);background:rgba(5,11,24,.6);}
.friend-links h2{font-size:15px;color:#c9d8f2;margin-bottom:16px;letter-spacing:.5px;}
.friend-grid{display:flex;flex-wrap:wrap;gap:10px;}
.friend-grid a{padding:7px 15px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:13.4px;color:#a9bcda;transition:all .2s ease;}
.friend-grid a:hover{color:#fff;background:rgba(47,125,255,.18);border-color:var(--line-strong);}

/* ---------- footer ---------- */
.site-footer{background:rgba(4,9,20,.92);border-top:1px solid var(--line);padding:52px 0 26px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));gap:34px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;color:var(--text);}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:15px;border-radius:11px;}
.footer-brand strong{font-size:17px;}
.footer-about{font-size:13.8px;color:var(--muted);max-width:420px;margin:0;}
.footer-col h3{font-size:14.5px;color:#d6e2f8;margin-bottom:14px;letter-spacing:.5px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.8px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7c90b2;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid-4,.point-strip,.flow,.timeline,.guarantee{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-layout{grid-template-columns:minmax(0,1fr);}
  .hero-points{grid-template-columns:repeat(3,minmax(0,1fr));}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-about{max-width:none;}
}
@media (max-width:820px){
  .nav-toggle{display:inline-flex;}
  .site-nav{position:absolute;left:0;right:0;top:100%;margin-top:10px;flex-direction:column;align-items:stretch;gap:8px;padding:16px;border-radius:var(--radius);border:1px solid var(--line-strong);background:rgba(8,16,32,.98);box-shadow:var(--shadow);display:none;}
  .site-nav.is-open{display:flex;}
  .site-nav a{padding:11px 16px;border-radius:var(--radius-sm);}
  .site-nav a.nav-cta{margin-left:0;justify-content:center;text-align:center;}
  .hero{padding:54px 0 48px;}
  .hero-points{grid-template-columns:minmax(0,1fr);}
  .section{padding:56px 0;}
  .download-panel{padding:28px 22px;}
}
@media (max-width:768px){
  .grid-2,.grid-3,.grid-4,.outline,.cat-wall,.dl-grid,.point-strip,.flow,.timeline,.guarantee{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .hero-lead{font-size:15.5px;}
  .hero-search{padding:7px 7px 7px 16px;}
  .hero-search button{padding:10px 18px;font-size:14px;}
  .brand-text small{display:none;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .hero h1{font-size:24px;}
  .hero-badge{font-size:12px;padding:6px 13px;}
  .btn-main,.btn-ghost{padding:12px 20px;font-size:14.5px;width:100%;justify-content:center;}
  .hero-actions{gap:10px;}
  .dl-btn{padding:15px 16px;}
  .news-card{padding:18px 16px;}
  .friend-grid a{font-size:12.8px;padding:6px 13px;}
}

/* roulang page: article */
:root{
  --bg:#050b18;
  --bg-2:#081226;
  --panel:rgba(17,30,56,.66);
  --panel-soft:rgba(13,23,41,.72);
  --line:rgba(108,152,232,.20);
  --line-strong:rgba(108,152,232,.42);
  --text:#e9effb;
  --muted:#9db0d2;
  --primary:#2f7dff;
  --primary-2:#4f9bff;
  --accent:#22d3ee;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(3,10,26,.55);
  --glow:0 10px 30px rgba(47,125,255,.32);
  --space:26px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 620px at 50% -12%, rgba(47,125,255,.22), transparent 62%),
    radial-gradient(900px 520px at 88% 6%, rgba(34,211,238,.12), transparent 58%),
    var(--bg);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary-2);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--accent);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin-top:0;}
ul,ol{padding-left:20px;}
.site-container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,11,24,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:14px;padding-bottom:14px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);min-width:0;}
.brand:hover{color:var(--text);}
.brand-mark{width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;font-size:17px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:var(--glow);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:18px;letter-spacing:.5px;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:.6px;white-space:nowrap;}
.site-nav{display:flex;align-items:center;gap:6px;}
.site-nav a{padding:9px 15px;border-radius:999px;color:var(--muted);font-size:15px;font-weight:500;border:1px solid transparent;transition:all .22s ease;}
.site-nav a:hover{color:var(--text);background:rgba(47,125,255,.12);border-color:var(--line);}
.site-nav a.active{color:var(--text);background:rgba(47,125,255,.18);border-color:var(--line-strong);}
.site-nav a.nav-cta{color:#fff;background:linear-gradient(135deg,var(--primary),#1b5ce0);box-shadow:var(--glow);margin-left:8px;}
.site-nav a.nav-cta:hover{filter:brightness(1.1);color:#fff;}
.nav-toggle{display:none;width:44px;height:42px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(47,125,255,.12);color:var(--text);font-size:17px;align-items:center;justify-content:center;cursor:pointer;transition:background .2s ease;}
.nav-toggle:hover{background:rgba(47,125,255,.24);}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.step-bar{border-top:1px solid var(--line);background:rgba(8,18,38,.6);}
.step-inner{display:flex;align-items:center;gap:10px;padding-top:9px;padding-bottom:9px;overflow-x:auto;scrollbar-width:none;}
.step-inner::-webkit-scrollbar{display:none;}
.step-item{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-size:13.5px;white-space:nowrap;transition:all .22s ease;flex:0 0 auto;}
.step-item:hover{color:var(--text);border-color:var(--line-strong);background:rgba(47,125,255,.12);}
.step-no{width:18px;height:18px;border-radius:50%;display:inline-grid;place-items:center;font-size:11px;font-weight:700;color:#04101f;background:linear-gradient(135deg,var(--accent),var(--primary-2));}
.step-sep{flex:0 0 22px;height:1px;background:linear-gradient(90deg,var(--line-strong),transparent);}

/* ---------- shared ---------- */
.btn-main,.btn-ghost{display:inline-flex;align-items:center;gap:9px;padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;}
.btn-main{color:#fff;background:linear-gradient(135deg,var(--primary),#1b5ce0);box-shadow:var(--glow);}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(47,125,255,.46);color:#fff;}
.btn-main:active{transform:translateY(0);}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong);}
.btn-ghost:hover{background:rgba(47,125,255,.16);color:#fff;transform:translateY(-2px);}
.btn-main:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.section{padding:66px 0;}
.section-alt{background:linear-gradient(180deg,rgba(8,18,38,0),rgba(8,18,38,.72) 42%,rgba(8,18,38,0));}
.section-head{max-width:820px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(47,125,255,.12);color:#cfdcff;font-size:12.5px;letter-spacing:.6px;margin-bottom:14px;}
.section-tag i{color:var(--accent);}
.section-head h2{font-size:clamp(21px,2.6vw,29px);line-height:1.4;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:15.5px;margin-bottom:0;}

/* ---------- article hero ---------- */
.article-hero{padding:44px 0 34px;border-bottom:1px solid var(--line);background:radial-gradient(900px 420px at 20% -20%,rgba(47,125,255,.20),transparent 62%);}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:rgba(157,176,210,.55);}
.article-hero h1{font-size:clamp(24px,3.2vw,36px);line-height:1.42;letter-spacing:.3px;margin-bottom:18px;max-width:920px;}
.article-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.meta-item{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--muted);font-size:13px;}
.meta-item i{color:var(--accent);font-size:12px;}
.article-lead{max-width:900px;color:var(--muted);font-size:15.5px;margin-bottom:0;padding-left:16px;border-left:3px solid var(--line-strong);}

/* ---------- article layout ---------- */
.article-main{padding:52px 0 20px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:30px;align-items:start;}
.article-panel{min-width:0;padding:32px 34px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel-soft);box-shadow:var(--shadow);}
.article-body{font-size:16.4px;color:#dae4f6;line-height:1.9;word-break:normal;overflow-wrap:break-word;}
.article-body h2{font-size:21px;line-height:1.5;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--primary);color:#fff;}
.article-body h3{font-size:17.5px;line-height:1.55;margin:26px 0 10px;color:#fff;}
.article-body h4{font-size:16px;margin:20px 0 8px;color:#e6eefc;}
.article-body p{margin:0 0 16px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body li{margin-bottom:8px;}
.article-body strong{color:#fff;}
.article-body img{border-radius:var(--radius);margin:20px 0;width:100%;height:auto;border:1px solid var(--line);}
.article-body blockquote{margin:20px 0;padding:16px 20px;border-left:3px solid var(--accent);background:rgba(34,211,238,.07);border-radius:0 var(--radius) var(--radius) 0;color:#c6d6ef;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.8px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:rgba(47,125,255,.14);color:#fff;font-weight:600;}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#fff;}
.article-body pre{background:rgba(4,10,22,.85);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;overflow-x:auto;font-size:14px;color:#cfe0f8;}
.article-body code{background:rgba(47,125,255,.16);border-radius:6px;padding:1px 6px;font-size:14px;color:#bfe3ff;}
.article-empty{text-align:center;padding:40px 10px;color:var(--muted);}
.article-empty h2{font-size:20px;color:#fff;margin-bottom:12px;border:0;padding:0;}
.article-empty p{margin-bottom:22px;}

/* ---------- side ---------- */
.article-side{display:grid;gap:18px;min-width:0;}
.side-card{padding:22px 22px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(10px);}
.side-card h3{font-size:15.5px;display:flex;align-items:center;gap:9px;margin-bottom:14px;color:#fff;}
.side-card h3 i{color:var(--accent);font-size:14px;}
.side-card p{font-size:14px;color:var(--muted);margin-bottom:14px;line-height:1.8;}
.side-list{list-style:none;padding:0;margin:0;display:grid;gap:9px;}
.side-list li{min-width:0;}
.side-list a,.side-list span{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:var(--radius-sm);border:1px solid var(--line);background:rgba(255,255,255,.025);color:#cfdcf2;font-size:13.8px;transition:all .2s ease;}
.side-list a:hover{color:#fff;border-color:var(--line-strong);background:rgba(47,125,255,.16);transform:translateX(2px);}
.side-list i{color:var(--accent);font-size:12.5px;flex:0 0 auto;}
.side-note{font-size:13.2px;color:var(--muted);line-height:1.85;margin-bottom:0;}

/* ---------- knowledge ---------- */
.k-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.k-card{min-width:0;padding:24px 24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;}
.k-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.k-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.k-ico{width:38px;height:38px;flex:0 0 38px;border-radius:11px;display:grid;place-items:center;font-size:15px;color:#fff;background:linear-gradient(135deg,rgba(47,125,255,.9),rgba(34,211,238,.8));}
.k-card h3{font-size:16.5px;margin-bottom:0;color:#fff;}
.k-card p{font-size:14.6px;color:var(--muted);margin-bottom:0;line-height:1.85;}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.check-item{min-width:0;padding:20px 20px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(13,23,41,.6);transition:border-color .2s ease,background .2s ease;}
.check-item:hover{border-color:var(--line-strong);background:rgba(47,125,255,.10);}
.check-no{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;font-size:13px;font-weight:700;color:#04101f;background:linear-gradient(135deg,var(--accent),var(--primary-2));margin-bottom:12px;}
.check-item h3{font-size:15.5px;margin-bottom:8px;color:#fff;}
.check-item p{font-size:14.2px;color:var(--muted);margin-bottom:0;line-height:1.8;}

/* ---------- download ---------- */
.download-panel{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:32px;align-items:center;padding:36px;border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:linear-gradient(135deg,rgba(47,125,255,.18),rgba(34,211,238,.07));box-shadow:var(--shadow);}
.download-copy{min-width:0;}
.download-copy h2{font-size:clamp(20px,2.4vw,27px);margin-bottom:14px;}
.download-copy p{color:var(--muted);font-size:15px;margin-bottom:0;}
.download-actions{display:grid;gap:12px;min-width:0;}
.dl-btn{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:var(--radius);border:1px solid var(--line-strong);background:rgba(8,18,38,.78);color:var(--text);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;}
.dl-btn:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:var(--glow);color:#fff;background:rgba(13,26,50,.95);}
.dl-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.dl-btn i{font-size:20px;color:var(--accent);flex:0 0 auto;width:24px;text-align:center;}
.dl-txt{min-width:0;}
.dl-txt strong{display:block;font-size:15px;line-height:1.4;}
.dl-txt small{display:block;font-size:12.3px;color:var(--muted);line-height:1.5;}

/* ---------- news / reading ---------- */
.read-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.read-card{min-width:0;padding:22px 22px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);transition:transform .22s ease,border-color .22s ease;}
.read-card:hover{transform:translateY(-3px);border-color:var(--line-strong);}
.read-tag{display:inline-block;padding:4px 11px;border-radius:999px;font-size:12px;color:#bfe3ff;background:rgba(47,125,255,.16);border:1px solid var(--line);margin-bottom:12px;}
.read-card h3{font-size:16px;line-height:1.55;margin-bottom:10px;color:#fff;}
.read-card p{font-size:14.2px;color:var(--muted);margin-bottom:0;line-height:1.82;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;gap:14px;max-width:940px;}
.faq-item{border-radius:var(--radius);border:1px solid var(--line);background:var(--panel-soft);overflow:hidden;transition:border-color .2s ease,background .2s ease;}
.faq-item[open],.faq-item:hover{border-color:var(--line-strong);}
.faq-item details{padding:0;}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 52px 18px 22px;font-size:15.6px;font-weight:600;color:#eaf1fd;position:relative;transition:color .2s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--accent);transition:transform .22s ease;}
.faq-item details[open] summary::after{transform:translateY(-50%) rotate(180deg);}
.faq-item summary:hover{color:#fff;}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-3px;}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:14.6px;line-height:1.88;}
.faq-body p{margin-bottom:0;}

/* ---------- closing cta ---------- */
.closing{padding:20px 0 76px;}
.closing-inner{padding:40px 36px;border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:radial-gradient(700px 320px at 12% 0%,rgba(47,125,255,.26),transparent 65%),var(--panel);text-align:center;box-shadow:var(--shadow);}
.closing-inner h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:14px;}
.closing-inner p{color:var(--muted);font-size:15px;max-width:760px;margin:0 auto 24px;}
.closing-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(4,10,22,.9);padding:54px 0 26px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:34px;margin-bottom:34px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{font-size:17px;letter-spacing:.5px;}
.footer-about{font-size:13.8px;color:var(--muted);line-height:1.9;margin-bottom:0;max-width:520px;}
.footer-col h3{font-size:15px;margin-bottom:14px;color:#fff;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.footer-col ul li{min-width:0;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:#7d90b3;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{grid-template-columns:repeat(2,minmax(0,1fr));}
  .download-panel{grid-template-columns:minmax(0,1fr);}
  .read-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .site-nav{display:none;position:absolute;top:calc(100% + 8px);right:22px;left:22px;flex-direction:column;align-items:stretch;gap:8px;padding:16px;border-radius:var(--radius);border:1px solid var(--line-strong);background:rgba(6,15,32,.99);box-shadow:var(--shadow);}
  .site-nav.open{display:flex;}
  .site-nav a{text-align:center;padding:11px 14px;}
  .site-nav a.nav-cta{margin-left:0;}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .article-main{padding:40px 0 10px;}
  .article-panel{padding:24px 20px;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .k-grid{grid-template-columns:minmax(0,1fr);}
  .read-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .download-panel{padding:26px 22px;gap:24px;}
  .closing-inner{padding:30px 22px;}
  .article-body{font-size:15.8px;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .brand-text small{display:none;}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .article-hero{padding:30px 0 26px;}
  .article-panel{padding:20px 16px;}
  .btn-main,.btn-ghost{padding:11px 20px;font-size:14.5px;}
  .closing-actions{flex-direction:column;align-items:stretch;}
  .closing-actions .btn-main,.closing-actions .btn-ghost{justify-content:center;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --bg:#050b18;
  --bg-2:#081226;
  --panel:rgba(17,30,56,.66);
  --panel-soft:rgba(13,23,41,.72);
  --line:rgba(108,152,232,.20);
  --line-strong:rgba(108,152,232,.42);
  --text:#e9effb;
  --muted:#9db0d2;
  --primary:#2f7dff;
  --primary-2:#4f9bff;
  --accent:#22d3ee;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(3,10,26,.55);
  --glow:0 10px 30px rgba(47,125,255,.32);
  --space:26px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 620px at 50% -12%, rgba(47,125,255,.22), transparent 62%),
    radial-gradient(900px 520px at 88% 6%, rgba(34,211,238,.12), transparent 58%),
    var(--bg);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
a{color:var(--primary-2);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--accent);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}
.site-container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,11,24,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:14px;padding-bottom:14px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);min-width:0;}
.brand:hover{color:var(--text);}
.brand-mark{width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;font-size:17px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:var(--glow);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:18px;letter-spacing:.5px;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:.6px;white-space:nowrap;}
.site-nav{display:flex;align-items:center;gap:6px;}
.site-nav a{padding:9px 15px;border-radius:999px;color:var(--muted);font-size:15px;font-weight:500;border:1px solid transparent;transition:all .22s ease;}
.site-nav a:hover{color:var(--text);background:rgba(47,125,255,.12);border-color:var(--line);}
.site-nav a.active{color:var(--text);background:rgba(47,125,255,.18);border-color:var(--line-strong);}
.site-nav a.nav-cta{color:#fff;background:linear-gradient(135deg,var(--primary),#1b5ce0);box-shadow:var(--glow);margin-left:8px;}
.site-nav a.nav-cta:hover{filter:brightness(1.1);color:#fff;}
.nav-toggle{display:none;width:44px;height:42px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(47,125,255,.12);color:var(--text);font-size:17px;align-items:center;justify-content:center;cursor:pointer;transition:background .2s ease;}
.nav-toggle:hover{background:rgba(47,125,255,.24);}
.step-bar{background:rgba(8,18,38,.9);border-top:1px solid rgba(108,152,232,.12);}
.step-inner{display:flex;align-items:center;gap:10px;padding-top:9px;padding-bottom:9px;overflow-x:auto;scrollbar-width:none;}
.step-inner::-webkit-scrollbar{display:none;}
.step-item{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-size:13.5px;white-space:nowrap;transition:all .22s ease;}
.step-item:hover{color:var(--text);border-color:var(--line-strong);background:rgba(47,125,255,.12);}
.step-no{display:inline-grid;place-items:center;width:19px;height:19px;border-radius:50%;font-size:11.5px;color:#05101f;background:linear-gradient(135deg,var(--accent),var(--primary-2));font-weight:700;}
.step-sep{flex:0 0 16px;height:1px;background:rgba(108,152,232,.35);}

/* ---------- hero ---------- */
.cat-hero{padding:58px 0 50px;position:relative;overflow:hidden;}
.cat-hero::after{content:"";position:absolute;inset:auto 0 -1px 0;height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);}
.cat-hero-inner{max-width:960px;}
.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(47,125,255,.12);color:#cfdcff;font-size:13px;letter-spacing:.4px;margin-bottom:20px;}
.hero-badge i{color:var(--accent);}
.cat-hero h1{font-size:clamp(26px,3.6vw,40px);line-height:1.34;letter-spacing:.5px;margin-bottom:18px;}
.cat-hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--primary-2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{color:var(--muted);font-size:16px;max-width:880px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.btn-main,.btn-ghost{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:999px;font-size:15.5px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;}
.btn-main{color:#fff;background:linear-gradient(135deg,var(--primary),#1b5ce0);box-shadow:var(--glow);}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(47,125,255,.46);color:#fff;}
.btn-main:active{transform:translateY(0);}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong);}
.btn-ghost:hover{background:rgba(47,125,255,.16);color:#fff;transform:translateY(-2px);}
.status-strip{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.status-item{display:inline-flex;align-items:center;gap:9px;padding:9px 16px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--panel-soft);color:var(--muted);font-size:13.5px;}
.status-item i{color:var(--accent);font-size:13px;}
.status-item strong{color:var(--text);font-weight:600;}

/* ---------- generic section ---------- */
.section{padding:56px 0;}
.section-alt{background:rgba(8,18,38,.55);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;color:var(--accent);font-weight:600;text-transform:uppercase;}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;}
.section-head{max-width:900px;margin-bottom:30px;}
.section-head h2{font-size:clamp(21px,2.6vw,29px);line-height:1.44;margin:12px 0 12px;}
.section-lead{color:var(--muted);font-size:15.5px;}

/* ---------- icon matrix ---------- */
.icon-matrix{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.matrix-card{min-width:0;padding:20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(12px);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;}
.matrix-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.matrix-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:16px;color:var(--accent);background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.28);}
.matrix-card h3{font-size:16px;margin:14px 0 7px;}
.matrix-card p{font-size:14px;color:var(--muted);}

/* ---------- variable cards ---------- */
.var-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.var-card{min-width:0;padding:24px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(12px);}
.var-card h3{font-size:17.5px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.var-card h3 span.tag-no{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:9px;font-size:13px;color:#05101f;background:linear-gradient(135deg,var(--accent),var(--primary-2));font-weight:700;flex:0 0 26px;}
.var-card p{font-size:14.8px;color:var(--muted);}
.var-card p + p{margin-top:10px;}

/* ---------- ratio table ---------- */
.table-scroll{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel-soft);}
.ratio-table{min-width:580px;width:100%;}
.ratio-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.ratio-row > div{padding:13px 16px;font-size:14.5px;border-bottom:1px solid rgba(108,152,232,.12);min-width:0;word-break:normal;overflow-wrap:anywhere;}
.ratio-row:last-child > div{border-bottom:0;}
.ratio-head > div{color:#c2d2ee;font-size:13px;letter-spacing:.5px;background:rgba(47,125,255,.14);font-weight:600;}
.ratio-row .strong{color:var(--accent);font-weight:600;}
.table-note{font-size:13px;color:var(--muted);margin-top:12px;}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.check-item{display:flex;gap:12px;align-items:flex-start;min-width:0;padding:15px 17px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--panel-soft);font-size:14.8px;color:#c9d6ee;}
.check-item i{color:var(--accent);margin-top:5px;font-size:14px;flex:0 0 14px;}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.scene-card{min-width:0;padding:24px;border-radius:var(--radius-lg);border:1px solid var(--line);background:linear-gradient(160deg,rgba(20,35,64,.72),rgba(10,19,36,.72));transition:border-color .22s ease,transform .22s ease;}
.scene-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.scene-card .tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(47,125,255,.14);color:#cfdcff;font-size:12.5px;margin-bottom:12px;}
.scene-card h3{font-size:17px;margin-bottom:10px;}
.scene-card p{font-size:14.8px;color:var(--muted);}
.scene-card ul{margin-top:12px;display:grid;gap:8px;}
.scene-card li{position:relative;padding-left:18px;font-size:14.2px;color:#bccbe6;}
.scene-card li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--accent);opacity:.85;}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(196px,1fr));gap:16px;}
.flow-card{min-width:0;padding:22px 20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);position:relative;}
.flow-no{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1px;}
.flow-card h3{font-size:16px;margin:8px 0 8px;}
.flow-card p{font-size:14.2px;color:var(--muted);}

/* ---------- risk ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.risk-panel{min-width:0;padding:26px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(12px);}
.risk-panel h3{font-size:17.5px;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.risk-panel h3 i{color:var(--accent);font-size:16px;}
.risk-list{display:grid;gap:12px;}
.risk-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.6px;color:#c9d6ee;}
.risk-list i{color:var(--primary-2);margin-top:5px;font-size:13px;flex:0 0 13px;}
.mis-list{display:grid;gap:14px;}
.mis-item{padding:14px 16px;border-radius:var(--radius-sm);border:1px solid rgba(108,152,232,.16);background:rgba(6,14,30,.55);min-width:0;}
.mis-item .mis-wrong{display:block;font-size:14.4px;color:#ffb4b4;margin-bottom:5px;}
.mis-item .mis-right{display:block;font-size:14.4px;color:#a9e7d6;}
.mis-item .mis-right i{color:var(--accent);margin-right:6px;}

/* ---------- download ---------- */
.download-panel{border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:linear-gradient(150deg,rgba(23,42,78,.86),rgba(8,17,34,.9));box-shadow:var(--shadow);padding:36px 32px;position:relative;overflow:hidden;}
.download-panel::before{content:"";position:absolute;top:-120px;right:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(47,125,255,.35),transparent 68%);pointer-events:none;}
.download-panel h2{font-size:clamp(21px,2.6vw,28px);margin:12px 0 12px;}
.download-panel .section-lead{max-width:820px;}
.dl-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:26px;}
.dl-btn{display:flex;align-items:center;gap:13px;min-width:0;padding:16px 18px;border-radius:var(--radius);border:1px solid var(--line-strong);background:linear-gradient(135deg,rgba(47,125,255,.26),rgba(34,211,238,.10));color:#fff;font-size:15.5px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;}
.dl-btn:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(47,125,255,.35);color:#fff;background:linear-gradient(135deg,rgba(47,125,255,.4),rgba(34,211,238,.18));}
.dl-btn i{font-size:20px;color:var(--accent);flex:0 0 20px;}
.dl-btn span{display:flex;flex-direction:column;line-height:1.35;min-width:0;}
.dl-btn small{font-size:12.5px;color:#bfd0ea;font-weight:400;}
.dl-note{margin-top:18px;font-size:13.2px;color:var(--muted);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.news-card{min-width:0;display:flex;flex-direction:column;gap:10px;padding:20px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--muted);}
.news-meta .news-cat{color:#cfdcff;padding:2px 10px;border-radius:999px;border:1px solid var(--line);background:rgba(47,125,255,.12);}
.news-card h3{font-size:16.4px;line-height:1.55;}
.news-card h3 a{color:var(--text);}
.news-card h3 a:hover{color:var(--accent);}
.news-card p{font-size:14px;color:var(--muted);}
.news-empty{padding:26px;border-radius:var(--radius);border:1px dashed var(--line-strong);background:rgba(8,17,34,.5);color:var(--muted);font-size:14.5px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:940px;}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel-soft);overflow:hidden;transition:border-color .2s ease;}
.faq-item[open]{border-color:var(--line-strong);}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 20px;cursor:pointer;font-size:15.6px;font-weight:600;color:var(--text);list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-ico{color:var(--accent);font-size:13px;transition:transform .2s ease;flex:0 0 13px;}
.faq-item[open] summary .faq-ico{transform:rotate(180deg);}
.faq-item .faq-body{padding:0 20px 18px;font-size:14.8px;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{margin-top:24px;background:rgba(6,13,28,.94);border-top:1px solid var(--line);padding:48px 0 22px;}
.footer-grid{display:grid;grid-template-columns:1.65fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-size:18px;color:var(--text);}
.footer-about{font-size:14px;color:var(--muted);line-height:1.85;}
.footer-col h3{font-size:15px;margin-bottom:14px;color:var(--text);}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:34px;padding-top:18px;border-top:1px solid rgba(108,152,232,.14);font-size:13px;color:#8296b8;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .icon-matrix{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .brand-text small{white-space:normal;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:6px;padding:14px 20px 18px;background:rgba(6,13,28,.98);border-bottom:1px solid var(--line);box-shadow:var(--shadow);}
  .site-nav.open{display:flex;}
  .site-nav a{padding:12px 14px;}
  .site-nav a.nav-cta{margin-left:0;}
}
@media (max-width:768px){
  .cat-hero{padding:44px 0 38px;}
  .section{padding:44px 0;}
  .var-grid,.check-grid,.scene-grid,.risk-grid{grid-template-columns:minmax(0,1fr);}
  .dl-buttons{grid-template-columns:minmax(0,1fr);}
  .news-grid{grid-template-columns:minmax(0,1fr);}
  .download-panel{padding:28px 20px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .hero-actions{width:100%;}
  .btn-main,.btn-ghost{flex:1 1 auto;justify-content:center;}
}
@media (max-width:520px){
  .icon-matrix{grid-template-columns:minmax(0,1fr);}
  .site-container{padding:0 16px;}
  .brand-text strong{font-size:16px;}
  .brand-text small{font-size:11px;}
  .status-strip{gap:10px;}
  .status-item{width:100%;justify-content:flex-start;}
  .faq-item summary{font-size:15px;padding:14px 16px;}
  .faq-item .faq-body{padding:0 16px 16px;}
}