/* roulang page: index */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1424;
  --bg-2:#101C33;
  --line:rgba(122,170,255,0.14);
  --brand:#3A7BFF;
  --brand-glow:#38D0F0;
  --accent:#FFB65C;
  --ok:#46E0B0;
  --danger:#FF7A7A;
  --text:#E7EEFB;
  --text-2:#9DB0CC;
  --text-3:#6B7E9C;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 20px 44px -26px rgba(0,0,0,0.85);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:#7FC8FF;text-decoration:none;}
a:hover{color:#B7E4FF;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
table{border-collapse:collapse;}

.wl-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.wl-header{
  position:sticky;top:0;z-index:200;
  background:rgba(7,12,22,0.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.wl-nav{position:relative;display:flex;align-items:center;gap:18px;height:72px;}
.wl-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.wl-logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,rgba(58,123,255,0.28),rgba(56,208,240,0.16));
  border:1px solid rgba(122,190,255,0.35);
  box-shadow:0 0 18px -6px rgba(58,123,255,0.9);
  color:#BEE9FF;
}
.wl-logo-text b{display:block;font-size:18px;letter-spacing:1px;color:var(--text);line-height:1.25;}
.wl-logo-text span{display:block;font-size:11px;letter-spacing:3px;color:var(--text-3);line-height:1.4;}
.wl-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.wl-menu li{display:block;}
.wl-menu a{
  display:block;padding:9px 13px;border-radius:10px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.wl-menu a:hover{color:var(--text);background:rgba(58,123,255,0.14);}
.wl-menu a.active{color:#FFFFFF;background:rgba(58,123,255,0.2);box-shadow:inset 0 0 0 1px rgba(122,190,255,0.28);}
.wl-nav-cta{flex:0 0 auto;padding:11px 22px;font-size:14px;}
.wl-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(58,123,255,0.1);border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  cursor:pointer;padding:0;
}
.wl-burger span{display:block;width:18px;height:2px;background:#BEE9FF;border-radius:2px;}

/* ---------- Buttons ---------- */
.wl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;
  transition:filter .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease,color .18s ease,background-color .18s ease;
}
.wl-btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-glow));
  color:#04101F;
  box-shadow:0 0 0 1px rgba(140,210,255,0.35),0 12px 32px -12px rgba(58,123,255,0.85);
}
.wl-btn-primary:hover{color:#04101F;filter:brightness(1.08);box-shadow:0 0 0 1px rgba(140,210,255,0.55),0 18px 42px -12px rgba(58,123,255,0.95);}
.wl-btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(140,210,255,0.4),0 8px 20px -12px rgba(58,123,255,0.8);}
.wl-btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.wl-btn-ghost:hover{border-color:var(--brand-glow);color:#FFFFFF;background:rgba(56,208,240,0.07);}
.wl-btn:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;}
.wl-btn-sm{min-height:40px;padding:10px 18px;font-size:14px;}

/* ---------- Layout ---------- */
.wl-section{padding:96px 0;position:relative;border-top:1px solid var(--line);}
.wl-section.alt{background:var(--bg-1);}
.wl-sec-head{max-width:780px;margin-bottom:38px;}
.wl-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:var(--brand-glow);
  margin-bottom:12px;font-weight:600;
}
.wl-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-glow));}
.wl-sec-head h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.wl-sec-head p{color:var(--text-2);font-size:16px;max-width:72ch;}

.wl-grid{display:grid;gap:18px;}
.wl-g2{grid-template-columns:repeat(2,minmax(0,1fr));}
.wl-g3{grid-template-columns:repeat(3,minmax(0,1fr));}
.wl-g4{grid-template-columns:repeat(4,minmax(0,1fr));}
.wl-grid > *{min-width:0;}

/* ---------- Card ---------- */
.wl-card{
  background:linear-gradient(160deg,rgba(30,48,84,0.62),rgba(11,19,35,0.5));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.07),var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  padding:24px;
  min-width:0;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.wl-card:hover{border-color:rgba(122,190,255,0.32);transform:translateY(-3px);}
.wl-card h3{font-size:20px;margin-bottom:10px;}
.wl-card p{color:var(--text-2);font-size:15px;}

.wl-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(58,123,255,0.55);
  color:#8FC6FF;font-size:12px;letter-spacing:.5px;line-height:1;
  background:rgba(58,123,255,0.1);
}
.wl-tag-warn{border-color:rgba(255,182,92,0.55);color:var(--accent);background:rgba(255,182,92,0.08);}
.wl-tag-ok{border-color:rgba(70,224,176,0.5);color:var(--ok);background:rgba(70,224,176,0.08);}

/* ---------- Hero ---------- */
.wl-hero{
  position:relative;overflow:hidden;
  padding:84px 0 76px;
  background:
    radial-gradient(760px 420px at 82% -10%,rgba(56,208,240,0.16),transparent 62%),
    radial-gradient(620px 380px at 8% 8%,rgba(58,123,255,0.14),transparent 66%),
    var(--bg-0);
}
.wl-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(122,170,255,0.055) 1px,transparent 1px),linear-gradient(90deg,rgba(122,170,255,0.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 10%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 20%,#000 10%,transparent 78%);
}
.wl-hero-inner{position:relative;z-index:1;}
.wl-hero-head{max-width:880px;}
.wl-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  letter-spacing:.5px;
  margin-bottom:20px;
}
.wl-hero h1 em{font-style:normal;background:linear-gradient(120deg,#7FC8FF,var(--brand-glow));-webkit-background-clip:text;background-clip:text;color:transparent;}
.wl-hero-lead{color:var(--text-2);font-size:17px;max-width:72ch;margin-bottom:28px;}
.wl-hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

.wl-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:44px;}
.wl-compare-card{
  background:linear-gradient(160deg,rgba(30,48,84,0.6),rgba(11,19,35,0.55));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.07),var(--shadow);
  padding:26px;min-width:0;
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
}
.wl-compare-card.before{border-color:rgba(255,122,122,0.28);}
.wl-compare-card.after{border-color:rgba(70,224,176,0.3);}
.wl-compare-title{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.wl-compare-title strong{font-size:17px;}
.wl-cmp-row{display:flex;gap:10px;align-items:flex-start;padding:11px 0;border-top:1px dashed rgba(122,170,255,0.16);color:var(--text-2);font-size:15px;}
.wl-cmp-row:first-of-type{border-top:0;}
.wl-dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto;margin-top:9px;}
.wl-dot-bad{background:var(--danger);box-shadow:0 0 10px rgba(255,122,122,0.7);}
.wl-dot-good{background:var(--ok);box-shadow:0 0 10px rgba(70,224,176,0.7);}

/* ---------- Metrics ---------- */
.wl-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.wl-metric{padding:22px;}
.wl-metric-num{
  display:block;font-size:34px;font-weight:700;line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,#7FC8FF,var(--brand-glow));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:6px;
}
.wl-metric-name{display:block;font-size:15px;font-weight:600;color:var(--text);margin-bottom:6px;}
.wl-metric-note{font-size:13px;color:var(--text-2);line-height:1.7;}

/* ---------- Download ---------- */
.wl-download-band{
  border:1px solid rgba(122,190,255,0.22);
  border-radius:var(--radius-lg);
  background:linear-gradient(150deg,rgba(30,48,84,0.72),rgba(9,16,30,0.72));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow);
  padding:34px;
}
.wl-dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px;}
.wl-dl-card{
  background:rgba(7,12,22,0.55);
  border:1px solid var(--line);border-radius:14px;
  padding:22px;min-width:0;
  transition:border-color .2s ease,transform .2s ease;
}
.wl-dl-card:hover{border-color:rgba(122,190,255,0.4);transform:translateY(-3px);}
.wl-dl-icon{
  width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(58,123,255,0.14);border:1px solid rgba(122,190,255,0.3);color:#BEE9FF;margin-bottom:14px;
}
.wl-dl-card h3{font-size:17px;margin-bottom:8px;}
.wl-dl-card p{font-size:14px;color:var(--text-2);margin-bottom:16px;}
.wl-dl-path{display:block;font-size:12px;color:var(--text-3);margin-top:10px;letter-spacing:.5px;}
.wl-note{font-size:13px;color:var(--text-3);margin-top:18px;}

/* ---------- Matrix ---------- */
.wl-matrix-card{display:flex;flex-direction:column;height:100%;}
.wl-matrix-icon{
  width:40px;height:40px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(122,190,255,0.3);background:rgba(58,123,255,0.12);color:#9FE6FF;margin-bottom:14px;
}
.wl-matrix-card p{flex:1 1 auto;}
.wl-link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;color:#7FC8FF;border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease;align-self:flex-start;}
.wl-link-arrow:hover{color:#B7E4FF;border-bottom-color:rgba(183,228,255,0.6);}

/* ---------- Tabs ---------- */
.wl-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.wl-tab{
  min-height:42px;padding:9px 20px;border-radius:999px;
  background:rgba(16,28,51,0.7);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;font-weight:600;cursor:pointer;
  transition:all .18s ease;
}
.wl-tab:hover{color:var(--text);border-color:rgba(122,190,255,0.35);}
.wl-tab.active{color:#04101F;background:linear-gradient(135deg,var(--brand),var(--brand-glow));border-color:transparent;box-shadow:0 10px 26px -14px rgba(58,123,255,0.9);}
.wl-tab:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;}
.wl-tabpanel{display:none;}
.wl-tabpanel.active{display:block;}
.wl-mode-card h3{font-size:18px;margin-bottom:10px;}
.wl-mode-card ul{margin-top:12px;}
.wl-mode-card li{position:relative;padding-left:16px;color:var(--text-2);font-size:15px;margin-bottom:8px;}
.wl-mode-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:rgba(122,190,255,0.75);}
.wl-risk-bar{
  margin-top:24px;padding:16px 20px;border-radius:14px;
  border:1px solid rgba(255,122,122,0.4);
  background:rgba(255,122,122,0.07);
  color:#FFC9C9;font-size:14px;line-height:1.8;
}
.wl-risk-bar strong{color:#FFD9D9;}

/* ---------- Timeline ---------- */
.wl-timeline{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;}
.wl-node{position:relative;padding:24px 18px 20px;min-width:0;}
.wl-node-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  color:#04101F;background:linear-gradient(135deg,var(--brand),var(--brand-glow));
  box-shadow:0 0 0 4px rgba(58,123,255,0.16),0 0 22px -4px rgba(56,208,240,0.9);
  margin-bottom:14px;
}
.wl-node h3{font-size:16px;margin-bottom:8px;}
.wl-node p{font-size:14px;color:var(--text-2);}
.wl-node::after{
  content:"";position:absolute;top:41px;right:-8px;width:16px;
  border-top:1px dashed rgba(122,170,255,0.35);
}
.wl-node:last-child::after{display:none;}

/* ---------- Entry band ---------- */
.wl-entry-band{
  display:flex;align-items:center;gap:28px;justify-content:space-between;flex-wrap:wrap;
  padding:34px;border-radius:var(--radius-lg);
  border:1px solid rgba(122,190,255,0.24);
  background:linear-gradient(120deg,rgba(30,48,84,0.7),rgba(12,22,40,0.62));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow);
}
.wl-entry-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px;}
.wl-entry-band p{color:var(--text-2);font-size:15px;max-width:62ch;}

/* ---------- Chart ---------- */
.wl-chart{padding:28px;}
.wl-bar-row{display:grid;grid-template-columns:132px 1fr 88px;gap:16px;align-items:center;padding:12px 0;border-bottom:1px dashed rgba(122,170,255,0.14);}
.wl-bar-row:last-child{border-bottom:0;}
.wl-bar-label{font-size:14px;color:var(--text);}
.wl-bar-track{height:12px;border-radius:999px;background:rgba(122,170,255,0.12);overflow:hidden;min-width:0;}
.wl-bar-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand-glow));}
.wl-bar-fill.muted{background:linear-gradient(90deg,rgba(107,126,156,0.7),rgba(157,176,204,0.7));}
.wl-bar-val{font-size:13px;color:var(--text-2);text-align:right;font-variant-numeric:tabular-nums;}

/* ---------- News ---------- */
.wl-news-card{display:flex;flex-direction:column;height:100%;}
.wl-news-card h3{font-size:17px;line-height:1.5;margin:12px 0 8px;}
.wl-news-card h3 a{color:var(--text);}
.wl-news-card h3 a:hover{color:#B7E4FF;}
.wl-news-ex{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1 1 auto;}
.wl-news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;font-size:13px;color:var(--text-3);}
.wl-empty{
  padding:44px 24px;text-align:center;border-radius:var(--radius);
  border:1px dashed rgba(122,170,255,0.3);background:rgba(16,28,51,0.4);
  color:var(--text-2);font-size:15px;
}

/* ---------- Assurance ---------- */
.wl-assure-row{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px dashed rgba(122,170,255,0.14);}
.wl-assure-row:last-child{border-bottom:0;}
.wl-assure-ico{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(70,224,176,0.1);border:1px solid rgba(70,224,176,0.32);color:var(--ok);
}
.wl-assure-row strong{display:block;font-size:15px;margin-bottom:4px;}
.wl-assure-row span{display:block;font-size:14px;color:var(--text-2);}

/* ---------- Quick answers ---------- */
.wl-quick{position:relative;padding-left:22px;}
.wl-quick::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--brand-glow));}
.wl-quick h3{font-size:17px;margin-bottom:10px;}
.wl-quick p{font-size:15px;color:var(--text-2);}

/* ---------- Glossary ---------- */
.wl-glossary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px;padding:10px 26px;}
.wl-term{display:grid;grid-template-columns:96px 1fr;gap:14px;padding:14px 0;border-bottom:1px dashed rgba(122,170,255,0.16);min-width:0;}
.wl-term dt{font-weight:700;color:#9FE6FF;font-size:15px;font-variant-numeric:tabular-nums;}
.wl-term dd{margin:0;font-size:14px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.wl-faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:rgba(16,28,51,0.5);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,background-color .2s ease;
}
.wl-faq-item:hover{border-color:rgba(122,190,255,0.3);}
.wl-faq-item summary{
  cursor:pointer;list-style:none;position:relative;
  padding:18px 56px 18px 20px;
  font-size:16px;font-weight:600;color:var(--text);
}
.wl-faq-item summary::-webkit-details-marker{display:none;}
.wl-faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:22px;line-height:1;color:var(--brand-glow);
}
.wl-faq-item[open] summary{background:rgba(58,123,255,0.08);}
.wl-faq-item[open] summary::after{content:"\2212";}
.wl-faq-body{padding:0 20px 20px;color:var(--text-2);font-size:15px;}
.wl-faq-item summary:focus-visible{outline:2px solid #9FE6FF;outline-offset:-2px;}

/* ---------- Form ---------- */
.wl-form-wrap{display:grid;grid-template-columns:0.9fr 1.1fr;gap:34px;align-items:start;}
.wl-form-side h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px;}
.wl-form-side p{color:var(--text-2);font-size:15px;margin-bottom:18px;}
.wl-side-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:14px;padding:8px 0;}
.wl-side-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-glow);margin-top:9px;flex:0 0 auto;}
.wl-form{padding:28px;}
.wl-field{margin-bottom:16px;}
.wl-field > label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.wl-field > label .req{color:var(--accent);}
input.wl-input,select.wl-select,textarea.wl-textarea{
  width:100%;padding:12px 14px;
  background:rgba(7,12,22,0.7);
  border:1px solid var(--line);border-radius:12px;
  color:var(--text);font-size:15px;font-family:inherit;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;
  -webkit-appearance:none;appearance:none;
  height:auto;margin:0;
}
select.wl-select{background-image:linear-gradient(45deg,transparent 50%,#8FC6FF 50%),linear-gradient(135deg,#8FC6FF 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
textarea.wl-textarea{min-height:104px;resize:vertical;}
input.wl-input:focus,select.wl-select:focus,textarea.wl-textarea:focus{
  outline:none;border-color:var(--brand-glow);
  box-shadow:0 0 0 3px rgba(56,208,240,0.18);
}
input.wl-input.is-error,select.wl-select.is-error,textarea.wl-textarea.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,122,122,0.14);}
.wl-err{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.wl-err.show{display:block;}
.wl-check{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);cursor:pointer;}
.wl-check input{width:18px;height:18px;margin:3px 0 0;flex:0 0 auto;accent-color:#38D0F0;}
.wl-form-msg{display:none;margin-top:16px;padding:12px 16px;border-radius:12px;font-size:14px;}
.wl-form-msg.ok{display:block;border:1px solid rgba(70,224,176,0.45);background:rgba(70,224,176,0.09);color:#B8F5E2;}
.wl-form-msg.bad{display:block;border:1px solid rgba(255,122,122,0.45);background:rgba(255,122,122,0.08);color:#FFC9C9;}
.wl-field-tip{font-size:13px;color:var(--text-3);margin-top:8px;}

/* ---------- Risk ---------- */
.wl-risk-block{
  padding:32px;border-radius:var(--radius-lg);
  border:1px solid rgba(255,182,92,0.35);
  background:linear-gradient(140deg,rgba(255,182,92,0.07),rgba(11,19,35,0.55));
}
.wl-risk-block h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:14px;color:#FFD9A8;}
.wl-risk-block p{color:#E4D2BB;font-size:15px;max-width:76ch;}

/* ---------- Footer ---------- */
.wl-footer{background:#050A13;border-top:1px solid var(--line);padding:64px 0 26px;margin-top:0;}
.wl-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:34px;}
.wl-footer h4{font-size:15px;margin-bottom:16px;color:var(--text);letter-spacing:.5px;}
.wl-footer-about{color:var(--text-3);font-size:14px;margin-top:14px;max-width:34ch;line-height:1.8;}
.wl-footer-links li{margin-bottom:10px;}
.wl-footer-links a{color:var(--text-2);font-size:14px;transition:color .18s ease;}
.wl-footer-links a:hover{color:#B7E4FF;}
.wl-footer-dl li{margin-bottom:12px;}
.wl-footer-dl a{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:14px;transition:color .18s ease;}
.wl-footer-dl a:hover{color:#B7E4FF;}
.wl-footer-dl code{font-family:inherit;font-size:12px;color:var(--text-3);}
.wl-footer-risk{color:var(--text-3);font-size:13px;line-height:1.9;}
.wl-footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .wl-section{padding:72px 0;}
  .wl-hero{padding:64px 0 58px;}
  .wl-g4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-g3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-timeline{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-node::after{display:none;}
  .wl-dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-form-wrap{grid-template-columns:1fr;gap:24px;}
  .wl-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-burger{display:flex;order:3;margin-left:10px;}
  .wl-menu{
    position:absolute;top:100%;left:-24px;right:-24px;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:14px 24px 22px;
    background:rgba(7,12,22,0.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px -30px rgba(0,0,0,0.9);
  }
  .wl-menu.open{display:flex;}
  .wl-menu a{padding:13px 14px;font-size:15px;}
  .wl-nav-cta{order:2;margin-left:auto;padding:10px 18px;font-size:13px;}
  .wl-glossary{grid-template-columns:1fr;padding:10px 22px;}
}
@media (max-width:768px){
  .wl-compare{grid-template-columns:1fr;}
  .wl-hero h1{font-size:clamp(26px,6.4vw,34px);}
  .wl-sec-head{margin-bottom:28px;}
  .wl-entry-band{padding:26px;}
  .wl-download-band{padding:24px;}
  .wl-bar-row{grid-template-columns:104px 1fr 64px;gap:10px;}
}
@media (max-width:640px){
  .wl-section{padding:56px 0;}
  .wl-hero{padding:52px 0 48px;}
  .wl-g2,.wl-g3,.wl-g4,.wl-metrics,.wl-dl-grid,.wl-timeline{grid-template-columns:1fr;}
  .wl-footer-grid{grid-template-columns:1fr;gap:26px;}
  .wl-logo-text b{font-size:16px;}
  .wl-logo-text span{font-size:10px;letter-spacing:2px;}
  .wl-nav{height:64px;gap:10px;}
  .wl-menu{left:-16px;right:-16px;padding:12px 16px 18px;}
  .wl-card,.wl-compare-card,.wl-dl-card{padding:20px;}
  .wl-form{padding:22px;}
  .wl-risk-block{padding:24px;}
  .wl-term{grid-template-columns:1fr;gap:4px;}
  .wl-footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1424;
  --bg-2:#101C33;
  --line:rgba(122,170,255,0.14);
  --brand:#3A7BFF;
  --brand-glow:#38D0F0;
  --accent:#FFB65C;
  --ok:#46E0B0;
  --danger:#FF7A7A;
  --text:#E7EEFB;
  --text-2:#9DB0CC;
  --text-3:#6B7E9C;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 20px 44px -26px rgba(0,0,0,0.85);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{list-style:none;padding:0;}
img{max-width:100%;height:auto;display:block;}
a{color:#7FC8FF;text-decoration:none;transition:color .18s ease;}
a:hover{color:#B7E4FF;}
button{font-family:inherit;}
.wl-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
/* ---------- Header ---------- */
.wl-header{
  position:sticky;top:0;z-index:200;
  background:rgba(7,12,22,0.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.wl-nav{position:relative;display:flex;align-items:center;gap:18px;height:72px;}
.wl-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.wl-logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,rgba(58,123,255,0.28),rgba(56,208,240,0.16));
  border:1px solid rgba(122,190,255,0.35);
  box-shadow:0 0 18px -6px rgba(58,123,255,0.9);
  color:#BEE9FF;
}
.wl-logo-text b{display:block;font-size:18px;letter-spacing:1px;color:var(--text);line-height:1.25;}
.wl-logo-text span{display:block;font-size:11px;letter-spacing:3px;color:var(--text-3);line-height:1.4;}
.wl-menu{display:flex;align-items:center;gap:4px;margin-left:auto;padding:0;}
.wl-menu li{display:block;}
.wl-menu a{
  display:block;padding:9px 13px;border-radius:10px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.wl-menu a:hover{color:var(--text);background:rgba(58,123,255,0.14);}
.wl-menu a.active{color:#FFFFFF;background:rgba(58,123,255,0.2);box-shadow:inset 0 0 0 1px rgba(122,190,255,0.28);}
.wl-nav-cta{flex:0 0 auto;padding:11px 22px;font-size:14px;}
.wl-burger{
  display:none;flex:0 0 auto;width:44px;height:44px;
  border:1px solid var(--line);border-radius:11px;
  background:rgba(58,123,255,0.08);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  margin-left:auto;padding:0;
}
.wl-burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.wl-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.wl-burger.is-open span:nth-child(2){opacity:0;}
.wl-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
/* ---------- Buttons ---------- */
.wl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:filter .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease,color .18s ease,background-color .18s ease;
}
.wl-btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-glow));
  color:#04101F;
  box-shadow:0 0 0 1px rgba(140,210,255,0.35),0 12px 32px -12px rgba(58,123,255,0.85);
}
.wl-btn-primary:hover{color:#04101F;filter:brightness(1.08);box-shadow:0 0 0 1px rgba(140,210,255,0.55),0 18px 42px -12px rgba(58,123,255,0.95);}
.wl-btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(140,210,255,0.4),0 8px 20px -12px rgba(58,123,255,0.8);}
.wl-btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.wl-btn-ghost:hover{border-color:var(--brand-glow);color:#FFFFFF;background:rgba(56,208,240,0.07);}
.wl-btn:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;}
.wl-btn-sm{min-height:40px;padding:10px 18px;font-size:14px;}
/* ---------- Section / typography ---------- */
.wl-section{padding:76px 0;position:relative;border-top:1px solid var(--line);}
.wl-section.alt{background:var(--bg-1);}
.wl-head{margin-bottom:34px;max-width:820px;}
.wl-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:var(--brand-glow);
  margin-bottom:12px;font-weight:600;
}
.wl-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-glow));}
.wl-h2{font-size:clamp(22px,2.6vw,30px);line-height:1.38;font-weight:700;letter-spacing:.3px;}
.wl-lead{color:var(--text-2);font-size:15px;margin-top:12px;max-width:72ch;}
.wl-grid{display:grid;gap:18px;}
.wl-grid > *{min-width:0;}
/* ---------- Card / Tag ---------- */
.wl-card{
  background:linear-gradient(160deg,rgba(30,48,84,0.62),rgba(11,19,35,0.5));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.07),var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  padding:24px;
  min-width:0;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.wl-card:hover{border-color:rgba(122,190,255,0.32);transform:translateY(-3px);}
.wl-card h3{font-size:19px;line-height:1.5;margin-bottom:10px;color:var(--text);}
.wl-card p{color:var(--text-2);font-size:15px;}
.wl-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(58,123,255,0.55);
  color:#8FC6FF;font-size:12px;letter-spacing:.5px;line-height:1;
  background:rgba(58,123,255,0.1);
}
.wl-tag-warn{border-color:rgba(255,182,92,0.55);color:var(--accent);background:rgba(255,182,92,0.08);}
.wl-tag-ok{border-color:rgba(70,224,176,0.5);color:var(--ok);background:rgba(70,224,176,0.08);}
/* ---------- Article head ---------- */
.wl-pagehead{
  position:relative;overflow:hidden;
  padding:40px 0 44px;
  background:
    radial-gradient(680px 340px at 88% -30%,rgba(56,208,240,0.14),transparent 62%),
    radial-gradient(560px 320px at 4% 0%,rgba(58,123,255,0.12),transparent 66%),
    var(--bg-0);
  border-bottom:1px solid var(--line);
}
.wl-pagehead::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(122,170,255,0.05) 1px,transparent 1px),linear-gradient(90deg,rgba(122,170,255,0.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 8%,transparent 82%);
  mask-image:radial-gradient(circle at 50% 0%,#000 8%,transparent 82%);
}
.wl-pagehead .wl-container{position:relative;z-index:1;}
.wl-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.wl-crumb a{color:var(--text-2);}
.wl-crumb a:hover{color:#B7E4FF;text-decoration:underline;text-underline-offset:3px;}
.wl-crumb span.sep{color:var(--text-3);}
.wl-crumb-cur{color:var(--text-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.wl-article-h1{
  font-size:clamp(24px,3.2vw,36px);
  line-height:1.35;font-weight:700;letter-spacing:.3px;
  margin-bottom:16px;max-width:900px;
}
.wl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3);}
.wl-meta-item{color:var(--text-3);display:inline-flex;align-items:center;gap:6px;}
.wl-meta-item::before{content:"";width:4px;height:4px;border-radius:50%;background:rgba(122,170,255,0.5);}
.wl-pagehead-lead{color:var(--text-2);font-size:15px;margin-top:18px;max-width:76ch;}
/* ---------- Article body ---------- */
.wl-article-section{padding:52px 0 72px;}
.wl-article-wrap{max-width:760px;margin:0 auto;min-width:0;}
.wl-article-card{
  background:linear-gradient(160deg,rgba(26,42,74,0.55),rgba(9,16,29,0.55));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06),var(--shadow);
  padding:34px 34px 26px;
  min-width:0;
}
.wl-article-body{font-size:17px;line-height:1.9;color:#D7E3F7;word-wrap:break-word;overflow-wrap:break-word;}
.wl-article-body h2{
  font-size:22px;line-height:1.5;color:var(--text);
  margin:40px 0 16px;padding-left:14px;
  border-left:3px solid var(--brand-glow);
  font-weight:700;
}
.wl-article-body h2:first-child{margin-top:0;}
.wl-article-body h3{font-size:18px;line-height:1.6;color:#CFE2FF;margin:28px 0 12px;font-weight:600;}
.wl-article-body h4{font-size:16px;color:#CFE2FF;margin:22px 0 10px;font-weight:600;}
.wl-article-body p{margin:0 0 18px;color:#D2DFF4;}
.wl-article-body ul,.wl-article-body ol{margin:0 0 18px;padding-left:1.35em;}
.wl-article-body ul{list-style:disc;}
.wl-article-body ol{list-style:decimal;}
.wl-article-body li{margin-bottom:8px;color:#D2DFF4;}
.wl-article-body a{color:#7FC8FF;text-decoration:underline;text-underline-offset:3px;}
.wl-article-body a:hover{color:#B7E4FF;}
.wl-article-body blockquote{
  margin:0 0 22px;padding:14px 18px;
  border-left:3px solid var(--brand-glow);
  background:rgba(56,208,240,0.06);
  border-radius:0 12px 12px 0;
  color:var(--text-2);font-size:16px;
}
.wl-article-body blockquote p:last-child{margin-bottom:0;}
.wl-article-body img{border-radius:12px;border:1px solid rgba(122,170,255,0.18);margin:20px auto;}
.wl-article-body figure{margin:0 0 20px;}
.wl-article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.wl-article-body table{
  display:block;width:100%;max-width:100%;overflow-x:auto;
  border-collapse:collapse;font-size:15px;margin:0 0 20px;
  border:1px solid var(--line);border-radius:12px;
}
.wl-article-body th{background:var(--bg-2);color:var(--text);text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap;}
.wl-article-body td{padding:10px 14px;border-bottom:1px solid rgba(122,170,255,0.08);color:var(--text-2);}
.wl-article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;background:rgba(58,123,255,0.14);
  color:#BFE4FF;padding:2px 6px;border-radius:6px;
}
.wl-article-body pre{
  background:rgba(7,12,22,0.8);border:1px solid var(--line);
  border-radius:12px;padding:16px;overflow-x:auto;margin:0 0 20px;
}
.wl-article-body pre code{background:none;padding:0;color:#CFE2FF;}
.wl-article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.wl-empty{text-align:center;padding:32px 10px;}
.wl-empty h2{font-size:22px;margin-bottom:12px;}
.wl-empty p{color:var(--text-2);margin-bottom:22px;}
/* ---------- Risk box ---------- */
.wl-riskbox{
  margin-top:26px;
  border:1px solid rgba(255,182,92,0.42);
  background:rgba(255,182,92,0.055);
  border-radius:14px;
  padding:20px 22px;
  min-width:0;
}
.wl-riskbox p{color:#E4D3BB;font-size:15px;line-height:1.85;margin-top:12px;}
.wl-riskbox p:last-child{margin-bottom:0;}
/* ---------- Terms ---------- */
.wl-term-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
.wl-term{
  background:linear-gradient(160deg,rgba(30,48,84,0.55),rgba(11,19,35,0.45));
  border:1px solid var(--line);border-radius:14px;padding:18px 20px;min-width:0;
  transition:border-color .2s ease;
}
.wl-term:hover{border-color:rgba(122,190,255,0.3);}
.wl-term dt{font-size:15px;font-weight:700;color:#9FE6FF;letter-spacing:.5px;margin-bottom:6px;}
.wl-term dd{font-size:14px;color:var(--text-2);line-height:1.8;margin:0;}
/* ---------- FAQ ---------- */
.wl-faq-list{max-width:860px;}
.wl-faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(160deg,rgba(30,48,84,0.5),rgba(11,19,35,0.45));
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease;
}
.wl-faq-item:hover{border-color:rgba(122,190,255,0.3);}
.wl-faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 54px 18px 20px;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.wl-faq-item summary::-webkit-details-marker{display:none;}
.wl-faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--brand-glow);font-weight:400;
}
.wl-faq-item[open] summary::after{content:"−";}
.wl-faq-item[open] summary{background:rgba(58,123,255,0.08);}
.wl-faq-item summary:focus-visible{outline:2px solid #9FE6FF;outline-offset:-2px;}
.wl-faq-body{padding:2px 20px 18px;color:var(--text-2);font-size:15px;line-height:1.85;}
.wl-faq-body p{margin-bottom:10px;}
.wl-faq-body p:last-child{margin-bottom:0;}
/* ---------- Download ---------- */
.wl-dl-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
.wl-dl-card{display:flex;flex-direction:column;min-width:0;}
.wl-dl-card h3{font-size:18px;}
.wl-dl-card p{flex:1 1 auto;margin-bottom:18px;}
.wl-dl-card .wl-btn{width:100%;}
.wl-dl-path{
  display:block;margin-top:12px;font-size:12px;color:var(--text-3);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  overflow-wrap:anywhere;
}
.wl-dl-note{margin-top:20px;font-size:13px;color:var(--text-3);line-height:1.8;}
/* ---------- Read next / nav back ---------- */
.wl-next-grid{grid-template-columns:1.15fr 0.85fr;align-items:start;}
.wl-next-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed rgba(122,170,255,0.18);
  font-size:15px;color:var(--text-2);min-width:0;
}
.wl-next-list li:last-child{border-bottom:0;padding-bottom:0;}
.wl-next-num{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#BEE9FF;
  background:linear-gradient(145deg,rgba(58,123,255,0.3),rgba(56,208,240,0.16));
  border:1px solid rgba(122,190,255,0.32);
}
.wl-next-list a{color:#9FE6FF;text-decoration:none;}
.wl-next-list a:hover{color:#D6F2FF;text-decoration:underline;text-underline-offset:3px;}
.wl-backcard{display:flex;flex-direction:column;gap:14px;}
.wl-backcard .wl-btn{width:100%;}
/* ---------- Footer ---------- */
.wl-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;}
.wl-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px;}
.wl-footer-grid > *{min-width:0;}
.wl-footer h4{font-size:15px;color:var(--text);margin-bottom:14px;letter-spacing:.5px;}
.wl-footer ul{margin:0;padding:0;}
.wl-footer-links li,.wl-footer-dl li{margin-bottom:10px;}
.wl-footer-links a,.wl-footer-dl a{font-size:14px;color:var(--text-2);}
.wl-footer-links a:hover,.wl-footer-dl a:hover{color:#B7E4FF;text-decoration:underline;text-underline-offset:3px;}
.wl-footer-dl code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12px;color:var(--text-3);margin-left:4px;
}
.wl-footer-about,.wl-footer-risk{font-size:14px;line-height:1.85;color:var(--text-2);margin-top:14px;}
.wl-footer-risk{color:var(--text-3);}
.wl-footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .wl-nav{height:64px;}
  .wl-burger{display:inline-flex;}
  .wl-menu{
    display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    margin-left:0;padding:10px;
    background:rgba(9,16,29,0.98);
    border:1px solid var(--line);border-radius:14px;
    box-shadow:0 24px 48px -24px rgba(0,0,0,0.9);
    max-height:72vh;overflow-y:auto;
  }
  .wl-menu.is-open{display:flex;}
  .wl-menu a{padding:13px 14px;font-size:15px;min-height:48px;display:flex;align-items:center;}
  .wl-nav-cta{padding:10px 16px;font-size:13px;}
  .wl-section{padding:64px 0;}
  .wl-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .wl-dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-next-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .wl-container{padding:0 18px;}
  .wl-pagehead{padding:32px 0 36px;}
  .wl-article-section{padding:40px 0 56px;}
  .wl-article-card{padding:24px 20px 18px;border-radius:16px;}
  .wl-article-body{font-size:16px;line-height:1.9;}
  .wl-article-body h2{font-size:20px;margin:32px 0 14px;}
  .wl-article-body h3{font-size:17px;}
  .wl-term-grid{grid-template-columns:1fr;}
  .wl-dl-grid{grid-template-columns:1fr;}
  .wl-section{padding:56px 0;}
  .wl-footer-grid{grid-template-columns:1fr;gap:26px;}
  .wl-footer{padding-top:48px;}
  .wl-footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .wl-container{padding:0 16px;}
  .wl-logo-text span{display:none;}
  .wl-logo-text b{font-size:16px;}
  .wl-logo-mark{width:32px;height:32px;}
  .wl-nav{gap:10px;}
  .wl-nav-cta{padding:9px 14px;font-size:13px;}
  .wl-btn{width:100%;}
  .wl-nav-cta.wl-btn{width:auto;}
  .wl-crumb{font-size:12px;}
  .wl-article-card{padding:20px 16px 14px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C16;
  --bg-1:#0B1424;
  --bg-2:#101C33;
  --line:rgba(122,170,255,0.14);
  --brand:#3A7BFF;
  --brand-glow:#38D0F0;
  --accent:#FFB65C;
  --ok:#46E0B0;
  --danger:#FF7A7A;
  --text:#E7EEFB;
  --text-2:#9DB0CC;
  --text-3:#6B7E9C;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 20px 44px -26px rgba(0,0,0,0.85);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--text);font-weight:700;line-height:1.35;margin-top:0;}
h1{font-size:clamp(28px,3.8vw,42px);line-height:1.28;margin-bottom:16px;}
h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
h3{font-size:20px;margin-bottom:10px;}
p{margin-top:0;}
a{color:#7FC8FF;text-decoration:none;transition:color .18s ease;}
a:hover{color:#B7E4FF;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
ul,ol{list-style:none;}
code{
  background:rgba(58,123,255,0.12);
  border-radius:6px;
  padding:1px 6px;
  font-size:13px;
  color:#9FE6FF;
}
.wl-container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.wl-header{
  position:sticky;top:0;z-index:200;
  background:rgba(7,12,22,0.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.wl-nav{position:relative;display:flex;align-items:center;gap:18px;height:72px;}
.wl-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;order:0;}
.wl-logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,rgba(58,123,255,0.28),rgba(56,208,240,0.16));
  border:1px solid rgba(122,190,255,0.35);
  box-shadow:0 0 18px -6px rgba(58,123,255,0.9);
  color:#BEE9FF;
  flex:0 0 auto;
}
.wl-logo-text b{display:block;font-size:18px;letter-spacing:1px;color:var(--text);line-height:1.25;}
.wl-logo-text span{display:block;font-size:11px;letter-spacing:3px;color:var(--text-3);line-height:1.4;}
.wl-menu{display:flex;align-items:center;gap:4px;margin:0 0 0 auto;padding:0;}
.wl-menu li{display:block;margin:0;}
.wl-menu a{
  display:block;padding:9px 13px;border-radius:10px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.wl-menu a:hover{color:var(--text);background:rgba(58,123,255,0.14);}
.wl-menu a.active{color:#FFFFFF;background:rgba(58,123,255,0.2);box-shadow:inset 0 0 0 1px rgba(122,190,255,0.28);}
.wl-nav-cta{flex:0 0 auto;padding:11px 22px;font-size:14px;}
.wl-burger{
  display:none;order:2;
  flex-direction:column;justify-content:center;gap:4px;
  width:44px;height:44px;padding:0 10px;margin-left:10px;
  border-radius:10px;border:1px solid var(--line);
  background:transparent;cursor:pointer;
}
.wl-burger span{display:block;height:2px;width:100%;border-radius:2px;background:var(--text-2);transition:transform .2s ease,opacity .2s ease;}
.wl-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.wl-burger.is-open span:nth-child(2){opacity:0;}
.wl-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.wl-burger:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;}

/* ---------- Buttons ---------- */
.wl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;
  transition:filter .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease,color .18s ease,background-color .18s ease;
}
.wl-btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-glow));
  color:#04101F;
  box-shadow:0 0 0 1px rgba(140,210,255,0.35),0 12px 32px -12px rgba(58,123,255,0.85);
}
.wl-btn-primary:hover{color:#04101F;filter:brightness(1.08);box-shadow:0 0 0 1px rgba(140,210,255,0.55),0 18px 42px -12px rgba(58,123,255,0.95);}
.wl-btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(140,210,255,0.4),0 8px 20px -12px rgba(58,123,255,0.8);}
.wl-btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.wl-btn-ghost:hover{border-color:var(--brand-glow);color:#FFFFFF;background:rgba(56,208,240,0.07);}
.wl-btn:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;}
.wl-btn-sm{min-height:40px;padding:10px 18px;font-size:14px;}

/* ---------- Layout ---------- */
.wl-section{padding:96px 0;position:relative;border-top:1px solid var(--line);}
.wl-section.alt{background:var(--bg-1);}
.wl-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:var(--brand-glow);
  margin-bottom:12px;font-weight:600;
}
.wl-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-glow));}
.wl-sec-head{max-width:760px;margin-bottom:36px;}
.wl-sec-head p{color:var(--text-2);font-size:16px;margin-bottom:0;}
.wl-grid{display:grid;gap:18px;}
.wl-grid > *{min-width:0;}

/* ---------- Card ---------- */
.wl-card{
  background:linear-gradient(160deg,rgba(30,48,84,0.62),rgba(11,19,35,0.5));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.07),var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  padding:24px;
  min-width:0;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.wl-card:hover{border-color:rgba(122,190,255,0.32);transform:translateY(-3px);}
.wl-card h3{font-size:20px;margin-bottom:10px;}
.wl-card p{color:var(--text-2);font-size:15px;margin-bottom:0;}
.wl-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(58,123,255,0.55);
  color:#8FC6FF;font-size:12px;letter-spacing:.5px;line-height:1;
  background:rgba(58,123,255,0.1);
}
.wl-tag-warn{border-color:rgba(255,182,92,0.55);color:var(--accent);background:rgba(255,182,92,0.08);}
.wl-tag-ok{border-color:rgba(70,224,176,0.5);color:var(--ok);background:rgba(70,224,176,0.08);}

/* ---------- 分类页头 ---------- */
.wl-cat-head{
  position:relative;overflow:hidden;
  padding:52px 0 46px;
  background:
    radial-gradient(680px 320px at 88% -20%,rgba(56,208,240,0.14),transparent 62%),
    radial-gradient(520px 300px at 4% 0%,rgba(58,123,255,0.12),transparent 66%),
    var(--bg-1);
  border-bottom:1px solid var(--line);
}
.wl-cat-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(122,170,255,0.05) 1px,transparent 1px),linear-gradient(90deg,rgba(122,170,255,0.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 40% 0%,#000 10%,transparent 80%);
  mask-image:radial-gradient(circle at 40% 0%,#000 10%,transparent 80%);
}
.wl-cat-head-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:36px;align-items:end;}
.wl-breadcrumb{margin-bottom:18px;}
.wl-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;font-size:13px;color:var(--text-3);}
.wl-breadcrumb li{display:flex;align-items:center;gap:8px;margin:0;}
.wl-breadcrumb li+li::before{content:"/";color:rgba(122,170,255,0.4);}
.wl-breadcrumb a{color:var(--text-2);}
.wl-breadcrumb a:hover{color:#B7E4FF;}
.wl-breadcrumb [aria-current="page"]{color:var(--text-2);}
.wl-cat-head h1{margin-bottom:14px;}
.wl-cat-head h1 em{font-style:normal;background:linear-gradient(120deg,#7FC8FF,var(--brand-glow));-webkit-background-clip:text;background-clip:text;color:transparent;}
.wl-cat-lead{color:var(--text-2);font-size:16px;max-width:64ch;margin-bottom:0;}
.wl-anchor-nav{
  display:flex;flex-wrap:wrap;gap:8px;
  padding:16px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(30,48,84,0.5),rgba(11,19,35,0.45));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
}
.wl-anchor-nav a{
  display:inline-flex;align-items:center;
  height:34px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.wl-anchor-nav a:hover{border-color:var(--brand-glow);color:#FFFFFF;background:rgba(56,208,240,0.08);}
.wl-anchor-nav a:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;}

/* ---------- 范围说明 ---------- */
.wl-scope-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.wl-scope-card{border-left:3px solid var(--brand-glow);padding-left:24px;}
.wl-scope-card.is-muted{border-left-color:rgba(255,182,92,0.75);}
.wl-scope-card h3{font-size:18px;}
.wl-check-list{margin:14px 0 0;padding:0;}
.wl-check-list li{position:relative;padding-left:18px;margin-bottom:10px;color:var(--text-2);font-size:15px;line-height:1.8;}
.wl-check-list li:last-child{margin-bottom:0;}
.wl-check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-glow);box-shadow:0 0 10px rgba(56,208,240,0.7);
}
.wl-scope-card.is-muted .wl-check-list li::before{background:var(--accent);box-shadow:0 0 10px rgba(255,182,92,0.5);}

/* ---------- 知识条目列表 ---------- */
.wl-post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.wl-post-card{display:flex;flex-direction:column;gap:12px;padding:24px;}
.wl-post-card h3{
  font-size:18px;line-height:1.55;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.wl-post-card p{
  margin:0;color:var(--text-2);font-size:15px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.wl-post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;}
.wl-post-meta .wl-tag{flex:0 0 auto;}
.wl-post-meta span{font-size:13px;color:var(--text-3);}

/* ---------- 主题分组 ---------- */
.wl-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.wl-topic-card{display:flex;flex-direction:column;gap:10px;}
.wl-topic-card h3{font-size:17px;margin:0;}
.wl-topic-card p{font-size:14px;margin:0;}
.wl-topic-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:#7FC8FF;margin-top:auto;padding-top:6px;
}
.wl-topic-link:hover{color:#B7E4FF;}
.wl-topic-link::after{content:"→";transition:transform .18s ease;}
.wl-topic-link:hover::after{transform:translateX(3px);}

/* ---------- 概念对照 ---------- */
.wl-compare-card{padding:10px 26px;}
.wl-compare-list{margin:0;padding:0;}
.wl-compare-row{
  display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;
  padding:16px 0;border-bottom:1px dashed rgba(122,170,255,0.14);
}
.wl-compare-row:last-child{border-bottom:0;}
.wl-compare-row dt{color:#9FE6FF;font-weight:600;font-size:15px;font-variant-numeric:tabular-nums;}
.wl-compare-row dd{margin:0;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- 误区 ---------- */
.wl-myth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.wl-myth-card{display:flex;flex-direction:column;gap:12px;}
.wl-myth-wrong{color:var(--text);font-size:15px;margin:0;}
.wl-myth-right{color:var(--text-2);font-size:15px;margin:0;}
.wl-myth-label{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;line-height:1;}
.wl-myth-label.wrong{border:1px solid rgba(255,182,92,0.55);color:var(--accent);background:rgba(255,182,92,0.08);}
.wl-myth-label.right{border:1px solid rgba(70,224,176,0.5);color:var(--ok);background:rgba(70,224,176,0.08);}

/* ---------- FAQ ---------- */
.wl-faq{display:grid;gap:12px;max-width:900px;}
.wl-faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(160deg,rgba(30,48,84,0.55),rgba(11,19,35,0.5));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
  transition:border-color .2s ease,background-color .2s ease;
}
.wl-faq-item:hover{border-color:rgba(122,190,255,0.3);}
.wl-faq-item[open]{border-color:rgba(122,190,255,0.34);background:linear-gradient(160deg,rgba(38,60,102,0.6),rgba(11,19,35,0.55));}
.wl-faq-item summary{
  cursor:pointer;list-style:none;
  padding:18px 56px 18px 22px;position:relative;
  font-size:16px;font-weight:600;color:var(--text);
}
.wl-faq-item summary::-webkit-details-marker{display:none;}
.wl-faq-item summary:focus-visible{outline:2px solid #9FE6FF;outline-offset:2px;border-radius:14px;}
.wl-faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--brand-glow);font-weight:600;
}
.wl-faq-item[open] summary::after{content:"−";}
.wl-faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ---------- 下载条 ---------- */
.wl-dl-strip{
  display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
  padding:28px;border-radius:var(--radius-lg);
  border:1px solid rgba(122,190,255,0.28);
  background:linear-gradient(135deg,rgba(58,123,255,0.16),rgba(56,208,240,0.08));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow);
}
.wl-dl-text{min-width:0;}
.wl-dl-text h2{font-size:22px;margin-bottom:8px;}
.wl-dl-text p{color:var(--text-2);font-size:14px;margin:0;}
.wl-dl-btns{display:flex;flex-wrap:wrap;gap:12px;}
.wl-dl-btns .wl-btn{white-space:nowrap;}

/* ---------- 阅读路径 + 风险 ---------- */
.wl-path-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:18px;}
.wl-path-list{margin:16px 0 0;padding:0;counter-reset:path;}
.wl-path-list li{
  position:relative;padding-left:44px;margin-bottom:16px;
  color:var(--text-2);font-size:15px;
}
.wl-path-list li:last-child{margin-bottom:0;}
.wl-path-list li::before{
  counter-increment:path;content:counter(path,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  width:30px;height:30px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#BEE9FF;
  background:linear-gradient(145deg,rgba(58,123,255,0.3),rgba(56,208,240,0.15));
  border:1px solid rgba(122,190,255,0.35);
  font-variant-numeric:tabular-nums;
}
.wl-path-list b{color:var(--text);font-weight:600;}
.wl-risk-card{border-left:3px solid rgba(255,182,92,0.8);}
.wl-risk-card h3{font-size:17px;}
.wl-risk-card p{color:var(--text-2);font-size:15px;margin-bottom:0;}

/* ---------- Footer ---------- */
.wl-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px;}
.wl-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.4fr;gap:32px;}
.wl-footer-grid > div{min-width:0;}
.wl-footer h4{font-size:15px;margin-bottom:14px;color:var(--text);letter-spacing:.5px;}
.wl-footer-about{color:var(--text-3);font-size:13px;line-height:1.85;margin-top:16px;margin-bottom:0;}
.wl-footer-links,.wl-footer-dl{margin:0;padding:0;}
.wl-footer-links li,.wl-footer-dl li{margin-bottom:10px;}
.wl-footer-links a,.wl-footer-dl a{font-size:14px;color:var(--text-2);}
.wl-footer-links a:hover,.wl-footer-dl a:hover{color:#B7E4FF;}
.wl-footer-dl a{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;}
.wl-footer-dl code{font-size:12px;color:var(--text-3);background:rgba(58,123,255,0.1);}
.wl-footer-risk{color:var(--text-3);font-size:13px;line-height:1.85;margin-bottom:0;}
.wl-footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:36px;padding-top:20px;
  border-top:1px solid var(--line);
  color:var(--text-3);font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .wl-section{padding:72px 0;}
  .wl-nav{height:64px;}
  .wl-menu{
    position:absolute;top:calc(100% + 8px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    margin-left:0;padding:10px;border-radius:14px;
    background:rgba(10,18,32,0.98);
    border:1px solid var(--line);
    box-shadow:0 24px 48px -24px rgba(0,0,0,0.9);
  }
  .wl-menu.is-open{display:flex;}
  .wl-menu a{padding:12px 14px;font-size:15px;min-height:44px;display:flex;align-items:center;}
  .wl-burger{display:flex;}
  .wl-nav-cta{order:1;margin-left:auto;padding:10px 18px;}
  .wl-cat-head-inner{grid-template-columns:minmax(0,1fr);gap:26px;align-items:start;}
  .wl-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wl-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .wl-section{padding:56px 0;}
  .wl-cat-head{padding:38px 0 36px;}
  .wl-post-grid{grid-template-columns:minmax(0,1fr);}
  .wl-scope-grid{grid-template-columns:minmax(0,1fr);}
  .wl-myth-grid{grid-template-columns:minmax(0,1fr);}
  .wl-topic-grid{grid-template-columns:minmax(0,1fr);}
  .wl-path-grid{grid-template-columns:minmax(0,1fr);}
  .wl-compare-row{grid-template-columns:minmax(0,1fr);gap:6px;}
  .wl-dl-strip{flex-direction:column;align-items:flex-start;}
  .wl-dl-btns{width:100%;}
  .wl-dl-btns .wl-btn{flex:1 1 180px;}
}
@media (max-width:520px){
  .wl-container{padding:0 16px;}
  .wl-cat-head h1{font-size:26px;}
  .wl-logo-text b{font-size:16px;}
  .wl-logo-text span{font-size:10px;letter-spacing:2px;}
  .wl-nav-cta{padding:9px 14px;font-size:13px;min-height:40px;}
  .wl-compare-card{padding:6px 18px;}
  .wl-faq-item summary{padding:16px 48px 16px 18px;font-size:15px;}
  .wl-faq-body{padding:0 18px 18px;}
  .wl-footer-grid{grid-template-columns:minmax(0,1fr);}
  .wl-dl-btns .wl-btn{flex:1 1 100%;}
}