/* roulang page: index */
:root{
  --bg:#060a14;
  --bg-soft:#0a1120;
  --panel:#0d1729;
  --panel-2:#101d33;
  --line:rgba(110,150,220,.16);
  --line-strong:rgba(37,214,168,.42);
  --text:#e9effa;
  --muted:#93a5c4;
  --accent:#25d6a8;
  --accent-2:#5b8dff;
  --accent-soft:rgba(37,214,168,.12);
  --warn:#f2b544;
  --warn-soft:rgba(242,181,68,.12);
  --radius-lg:22px;
  --radius:14px;
  --shadow:0 24px 60px rgba(2,8,20,.55);
  --shadow-sm:0 10px 26px rgba(2,8,20,.42);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.34;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding-left:22px;padding-right:22px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,20,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:74px;flex-wrap:nowrap;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;flex:0 1 auto;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;color:#04121a;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 8px 22px rgba(37,214,168,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0;}
.brand-text strong{font-size:17px;letter-spacing:.5px;white-space:nowrap;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:.6px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;
  font-size:14.5px;color:var(--muted);white-space:nowrap;
  border:1px solid transparent;
}
.nav-link:hover{color:#fff;background:rgba(91,141,255,.12);border-color:rgba(91,141,255,.28);}
.nav-link.active{
  color:#eafff8;background:var(--accent-soft);
  border-color:var(--line-strong);
  box-shadow:0 0 0 1px rgba(37,214,168,.12),0 0 22px rgba(37,214,168,.18);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#04121a;
  background:linear-gradient(135deg,var(--accent),#3fb0ff);
  box-shadow:0 12px 28px rgba(37,214,168,.26);
}
.btn-neon:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(37,214,168,.36);color:#04121a;}
.btn-neon:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:999px;cursor:pointer;font-size:15px;font-weight:600;
  color:var(--text);background:rgba(255,255,255,.035);border:1px solid rgba(110,150,220,.34);
}
.btn-ghost:hover{color:#fff;border-color:var(--accent);background:var(--accent-soft);}
.btn-ghost:active{transform:translateY(1px);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:56px 0 64px;
  background:
    radial-gradient(760px 380px at 12% -10%,rgba(37,214,168,.16),transparent 68%),
    radial-gradient(640px 360px at 92% 4%,rgba(91,141,255,.16),transparent 70%),
    linear-gradient(180deg,rgba(10,17,32,.6),rgba(6,10,20,0));
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(110,150,220,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(110,150,220,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 20%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 20%,transparent 78%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,452px);
  gap:52px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;color:#c8f7e8;
  background:var(--accent-soft);border:1px solid var(--line-strong);
  margin-bottom:20px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(37,214,168,.18);}
.hero-title{
  font-size:clamp(27px,3.3vw,43px);
  letter-spacing:.4px;
  background:linear-gradient(120deg,#ffffff 0%,#cfe6ff 62%,#8ff0d6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;color:var(--muted);font-size:16px;line-height:1.92;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:30px;padding-top:24px;border-top:1px dashed var(--line);}
.hero-points li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--muted);max-width:100%;}
.hero-points li::before{
  content:"";width:6px;height:6px;margin-top:10px;border-radius:50%;
  background:var(--accent);flex:0 0 6px;box-shadow:0 0 10px rgba(37,214,168,.7);
}

/* live card */
.live-card{
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(16,29,51,.96),rgba(10,17,32,.96));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.live-cover{position:relative;aspect-ratio:16/9;background:linear-gradient(150deg,#0b2438,#0d1a33 60%,#101a2e);overflow:hidden;}
.live-cover-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(110,150,220,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(110,150,220,.12) 1px,transparent 1px);
  background-size:40px 40px;
}
.live-cover-chart{position:absolute;inset:0;width:100%;height:100%;}
.live-badge{
  position:absolute;top:14px;left:14px;z-index:3;
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;color:#04121a;
  background:linear-gradient(135deg,var(--accent),#4fd2ff);
}
.live-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:#04121a;}
.live-cover-note{
  position:absolute;left:14px;bottom:12px;z-index:3;
  font-size:12px;color:rgba(233,239,250,.72);letter-spacing:.5px;
}
.live-body{padding:22px 22px 24px;}
.live-body h2{font-size:19px;line-height:1.5;}
.live-sub{margin-top:8px;font-size:13.5px;color:var(--muted);}
.countdown{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:18px;}
.cd-cell{
  border-radius:12px;padding:12px 6px 10px;text-align:center;
  background:rgba(255,255,255,.035);border:1px solid var(--line);min-width:0;
}
.cd-cell span{display:block;font-size:24px;font-weight:800;color:#9ef4dd;letter-spacing:1px;font-variant-numeric:tabular-nums;}
.cd-cell em{display:block;font-style:normal;font-size:11.5px;color:var(--muted);margin-top:2px;}
.live-actions{display:flex;align-items:center;gap:10px;margin-top:16px;flex-wrap:wrap;}
.live-actions .btn-ghost{padding:9px 18px;font-size:14px;}
.live-tip{font-size:12.5px;color:var(--muted);flex:1 1 140px;min-width:0;}

/* ---------- section base ---------- */
.site-section{padding:66px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:800px;margin-bottom:34px;}
.section-label{
  display:inline-block;font-size:12.5px;letter-spacing:2px;color:var(--accent);
  padding:4px 12px;border-radius:999px;background:var(--accent-soft);
  border:1px solid var(--line-strong);margin-bottom:14px;
}
.section-title{font-size:clamp(21px,2.3vw,29px);letter-spacing:.3px;}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.4px;line-height:1.9;}

/* feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.feature-card{
  min-width:0;padding:26px 24px;border-radius:var(--radius);
  background:linear-gradient(170deg,rgba(16,29,51,.92),rgba(11,19,34,.92));
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 44px rgba(2,8,20,.6);}
.feature-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#04121a;margin-bottom:16px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.feature-card h3{font-size:17.5px;margin-bottom:10px;}
.feature-card p{color:var(--muted);font-size:14.6px;line-height:1.85;}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.step-item{
  position:relative;min-width:0;padding:24px 20px;border-radius:var(--radius);
  background:rgba(255,255,255,.025);border:1px solid var(--line);
}
.step-item:hover{border-color:var(--line-strong);background:rgba(37,214,168,.06);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:10px;font-size:14px;font-weight:800;
  color:#04121a;background:linear-gradient(135deg,var(--accent),#48c4ff);margin-bottom:14px;
}
.step-item h3{font-size:16.5px;margin-bottom:8px;}
.step-item p{color:var(--muted);font-size:14.2px;line-height:1.82;}

/* track */
.track-row{
  display:grid;grid-auto-flow:column;grid-auto-columns:308px;gap:18px;
  overflow-x:auto;padding:4px 2px 18px;scroll-snap-type:x mandatory;
}
.track-row::-webkit-scrollbar{height:8px;}
.track-row::-webkit-scrollbar-thumb{background:rgba(110,150,220,.28);border-radius:99px;}
.track-card{
  scroll-snap-align:start;min-width:0;display:flex;flex-direction:column;
  padding:20px;border-radius:var(--radius);
  background:linear-gradient(175deg,rgba(16,29,51,.94),rgba(10,17,32,.94));
  border:1px solid var(--line);
}
.track-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 20px 40px rgba(2,8,20,.5);}
.track-tag{
  align-self:flex-start;font-size:12px;color:#9ef4dd;padding:3px 10px;border-radius:999px;
  background:var(--accent-soft);border:1px solid var(--line-strong);margin-bottom:12px;max-width:100%;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.track-card h3{font-size:16px;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.track-card p{color:var(--muted);font-size:13.8px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.track-date{margin-top:auto;padding-top:14px;font-size:12.5px;color:rgba(147,165,196,.8);}
.empty-tip{
  padding:26px;border-radius:var(--radius);border:1px dashed var(--line);
  color:var(--muted);font-size:14.5px;background:rgba(255,255,255,.02);
}

/* topics */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.topic-card{
  min-width:0;border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(175deg,rgba(16,29,51,.94),rgba(10,17,32,.94));
  border:1px solid var(--line);
}
.topic-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 44px rgba(2,8,20,.55);}
.topic-thumb{
  height:132px;position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;letter-spacing:3px;color:rgba(233,239,250,.6);
}
.topic-thumb::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:28px 28px;
}
.thumb-a{background:linear-gradient(140deg,#0c3b34,#0d2036);}
.thumb-b{background:linear-gradient(140deg,#122a52,#0a1a30);}
.thumb-c{background:linear-gradient(140deg,#3a2a12,#101a2e);}
.topic-body{padding:20px;}
.topic-body h3{font-size:16.5px;margin-bottom:9px;}
.topic-body p{color:var(--muted);font-size:14.2px;line-height:1.84;}

/* channel entry */
.entry-card{
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  padding:32px;border-radius:var(--radius-lg);
  background:
    radial-gradient(520px 240px at 88% 10%,rgba(37,214,168,.2),transparent 70%),
    linear-gradient(160deg,rgba(17,31,54,.98),rgba(9,16,30,.98));
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.entry-card:hover{transform:translateY(-3px);box-shadow:0 28px 60px rgba(2,8,20,.62);}
.entry-main{flex:1 1 420px;min-width:0;}
.entry-main h3{font-size:clamp(18px,2vw,23px);margin-bottom:12px;}
.entry-main p{color:var(--muted);font-size:15px;line-height:1.9;max-width:640px;}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.entry-tags span{
  font-size:12.6px;color:#b9c8e0;padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.entry-action{flex:0 0 auto;}

/* risk split */
.split-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:start;}
.split-grid .block p{color:var(--muted);font-size:15.2px;line-height:1.95;}
.split-grid .block p + p{margin-top:14px;}
.check-list li{
  display:flex;gap:12px;padding:16px 18px;border-radius:var(--radius);
  background:rgba(255,255,255,.03);border:1px solid var(--line);margin-bottom:12px;min-width:0;
}
.check-list li:hover{border-color:var(--line-strong);background:rgba(37,214,168,.06);}
.check-list strong{display:block;font-size:15.2px;margin-bottom:4px;}
.check-list span{display:block;color:var(--muted);font-size:13.9px;line-height:1.8;}
.check-dot{flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;box-shadow:0 0 10px rgba(37,214,168,.7);}

/* timeline */
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--accent),rgba(91,141,255,.35));border-radius:2px;}
.tl-item{position:relative;padding:0 0 26px 8px;min-width:0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--panel);border:2px solid var(--accent);box-shadow:0 0 12px rgba(37,214,168,.55);
}
.tl-time{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.6px;}
.tl-item h3{font-size:16.5px;margin:6px 0 8px;}
.tl-item p{color:var(--muted);font-size:14.4px;line-height:1.86;}

/* persona */
.persona-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.persona-card{
  min-width:0;padding:26px 24px;border-radius:var(--radius);
  background:linear-gradient(170deg,rgba(16,29,51,.94),rgba(10,17,32,.94));
  border:1px solid var(--line);
}
.persona-card h3{font-size:17.5px;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.persona-card h3 i{width:9px;height:9px;border-radius:50%;flex:0 0 9px;}
.persona-yes h3 i{background:var(--accent);box-shadow:0 0 10px rgba(37,214,168,.7);}
.persona-no h3 i{background:var(--warn);box-shadow:0 0 10px rgba(242,181,68,.6);}
.persona-card li{display:flex;gap:10px;font-size:14.4px;color:var(--muted);line-height:1.82;padding:9px 0;border-bottom:1px dashed rgba(110,150,220,.14);}
.persona-card li:last-child{border-bottom:0;padding-bottom:0;}
.persona-card li::before{content:"·";color:var(--accent);font-weight:800;flex:0 0 8px;}
.persona-no li::before{color:var(--warn);}

/* faq */
.faq-wrap{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:14px;max-width:920px;}
.faq-item{
  border-radius:var(--radius);border:1px solid var(--line);background:rgba(255,255,255,.03);
  overflow:hidden;
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(37,214,168,.05);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-size:15.8px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"＋";color:var(--accent);font-size:17px;flex:0 0 auto;}
.faq-item[open] summary::after{content:"－";}
.faq-item .faq-answer{padding:0 22px 20px;color:var(--muted);font-size:14.6px;line-height:1.9;}

/* news layout */
.news-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:28px;align-items:start;}
.news-list{display:flex;flex-direction:column;gap:14px;min-width:0;}
.news-item{
  display:flex;gap:18px;align-items:flex-start;padding:20px;border-radius:var(--radius);
  background:rgba(255,255,255,.028);border:1px solid var(--line);min-width:0;
}
.news-item:hover{border-color:var(--line-strong);background:rgba(37,214,168,.055);transform:translateX(3px);}
.news-thumb{
  flex:0 0 86px;width:86px;height:66px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(233,239,250,.72);letter-spacing:2px;
  background:linear-gradient(140deg,#12314a,#0c1a2c);border:1px solid var(--line);
}
.news-body{min-width:0;flex:1 1 auto;}
.news-body h3{font-size:16px;line-height:1.55;margin-bottom:8px;}
.news-body p{
  color:var(--muted);font-size:13.9px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:10px;font-size:12.4px;color:rgba(147,165,196,.82);display:flex;gap:14px;flex-wrap:wrap;}
.side-panel{
  border-radius:var(--radius);padding:24px;background:linear-gradient(170deg,rgba(16,29,51,.96),rgba(10,17,32,.96));
  border:1px solid var(--line);box-shadow:var(--shadow-sm);min-width:0;
}
.side-panel h3{font-size:16.5px;margin-bottom:16px;}
.side-list li{padding:13px 0;border-bottom:1px dashed rgba(110,150,220,.16);min-width:0;}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{display:block;font-size:14.2px;line-height:1.7;color:#d5e2f6;}
.side-list a:hover{color:var(--accent);}
.side-list time{display:block;margin-top:5px;font-size:12.2px;color:rgba(147,165,196,.8);}
.more-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:22px;
  font-size:14.2px;color:var(--accent);font-weight:600;
}
.more-link:hover{color:#9ef4dd;gap:10px;}

/* download */
.download-section{
  padding:70px 0;
  background:
    radial-gradient(700px 320px at 15% 0%,rgba(37,214,168,.18),transparent 68%),
    radial-gradient(700px 320px at 85% 100%,rgba(91,141,255,.18),transparent 70%),
    linear-gradient(180deg,#08101f,#060a14);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:34px;}
.dl-card{
  min-width:0;padding:26px 24px;border-radius:var(--radius);
  background:rgba(13,23,41,.92);border:1px solid var(--line);
  display:flex;flex-direction:column;
}
.dl-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 46px rgba(2,8,20,.6);}
.dl-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.dl-badge{
  width:40px;height:40px;flex:0 0 40px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#04121a;background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.dl-head h3{font-size:16.5px;}
.dl-card p{color:var(--muted);font-size:14.2px;line-height:1.85;margin-bottom:18px;}
.dl-btn{
  margin-top:auto;display:inline-flex;align-items:center;justify-content:center;
  padding:11px 18px;border-radius:10px;font-size:14.6px;font-weight:700;color:#04121a;
  background:linear-gradient(135deg,var(--accent),#45bdff);
}
.dl-btn:hover{color:#04121a;transform:translateY(-2px);box-shadow:0 14px 30px rgba(37,214,168,.3);}
.dl-file{display:block;margin-top:10px;font-size:12.2px;color:rgba(147,165,196,.85);text-align:center;}
.download-note{margin-top:24px;color:var(--muted);font-size:13.6px;line-height:1.85;max-width:900px;}

/* security */
.security-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.sec-card{
  min-width:0;padding:24px;border-radius:var(--radius);
  background:rgba(255,255,255,.028);border:1px solid var(--line);
}
.sec-card:hover{border-color:var(--line-strong);background:rgba(37,214,168,.055);}
.sec-card h3{font-size:16.5px;margin-bottom:10px;}
.sec-card p{color:var(--muted);font-size:14.2px;line-height:1.85;}
.risk-note{
  margin-top:28px;padding:22px 24px;border-radius:var(--radius);
  background:var(--warn-soft);border:1px solid rgba(242,181,68,.34);
  color:#f4e2bd;font-size:14.2px;line-height:1.9;
}
.risk-note strong{color:var(--warn);}

/* footer */
.site-footer{background:#04080f;border-top:1px solid var(--line);padding:52px 0 26px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{font-size:16.5px;}
.footer-about{color:var(--muted);font-size:14px;line-height:1.9;max-width:520px;}
.footer-col h4{font-size:14.6px;margin-bottom:16px;color:#dbe6f7;letter-spacing:.6px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:38px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:rgba(147,165,196,.85);font-size:13px;
}

/* responsive */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:38px;}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .security-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-layout{grid-template-columns:minmax(0,1fr);}
  .split-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .download-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
}
@media (max-width:860px){
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:14px 22px 20px;margin-left:0;
    background:rgba(6,10,20,.98);border-bottom:1px solid var(--line);
    display:none;
  }
  .main-nav.open{display:flex;}
  .main-nav .nav-link{padding:12px 16px;border-radius:12px;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-actions{margin-left:0;}
  .nav-actions .btn-neon{display:none;}
  .header-inner{position:relative;}
}
@media (max-width:768px){
  .site-section{padding:52px 0;}
  .hero{padding:42px 0 52px;}
  .feature-grid,.topic-grid,.security-grid,.step-grid,.download-grid,.persona-grid{grid-template-columns:minmax(0,1fr);}
  .track-row{grid-auto-columns:80%;}
  .news-thumb{flex:0 0 64px;width:64px;height:56px;font-size:11px;}
  .entry-card{padding:24px;}
  .entry-action{width:100%;}
  .entry-action .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .hero-points{gap:10px 18px;}
}
@media (max-width:520px){
  .site-container{padding-left:16px;padding-right:16px;}
  .brand-text small{display:none;}
  .brand-text strong{font-size:15.5px;}
  .hero-title{font-size:25px;}
  .hero-lead{font-size:15px;}
  .btn-neon,.btn-ghost{padding:11px 18px;font-size:14.2px;}
  .hero-actions .btn-neon,.hero-actions .btn-ghost{width:100%;}
  .cd-cell span{font-size:20px;}
  .track-row{grid-auto-columns:88%;}
  .news-item{padding:16px;gap:12px;}
  .side-panel{padding:20px;}
}

/* roulang page: article */
:root{
  --bg:#060a14;
  --bg-soft:#0a1120;
  --panel:#0d1729;
  --panel-2:#101d33;
  --line:rgba(110,150,220,.16);
  --line-strong:rgba(37,214,168,.42);
  --text:#e9effa;
  --muted:#93a5c4;
  --accent:#25d6a8;
  --accent-2:#5b8dff;
  --accent-soft:rgba(37,214,168,.12);
  --warn:#f2b544;
  --warn-soft:rgba(242,181,68,.12);
  --radius-lg:22px;
  --radius:14px;
  --shadow:0 24px 60px rgba(2,8,20,.55);
  --shadow-sm:0 10px 26px rgba(2,8,20,.42);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding-left:22px;padding-right:22px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#04121a;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,20,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:74px;flex-wrap:nowrap;position:relative;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;flex:0 1 auto;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;color:#04121a;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 8px 22px rgba(37,214,168,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0;}
.brand-text strong{font-size:17px;letter-spacing:.5px;white-space:nowrap;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:.6px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;
  font-size:14.5px;color:var(--muted);white-space:nowrap;
  border:1px solid transparent;
}
.nav-link:hover{color:#fff;background:rgba(91,141,255,.12);border-color:rgba(91,141,255,.28);}
.nav-link.active{
  color:#eafff8;background:var(--accent-soft);
  border-color:var(--line-strong);
  box-shadow:0 0 0 1px rgba(37,214,168,.12),0 0 22px rgba(37,214,168,.18);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ---------- buttons ---------- */
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#04121a;
  background:linear-gradient(135deg,var(--accent),#3fb0ff);
  box-shadow:0 12px 28px rgba(37,214,168,.26);
}
.btn-neon:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(37,214,168,.36);color:#04121a;}
.btn-neon:active{transform:translateY(0);}
.btn-neon:focus-visible{outline:2px solid #9ff5dd;outline-offset:3px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:999px;cursor:pointer;font-size:15px;font-weight:600;
  color:var(--text);background:rgba(255,255,255,.035);border:1px solid rgba(110,150,220,.34);
}
.btn-ghost:hover{color:#fff;border-color:var(--accent);background:var(--accent-soft);}
.btn-ghost:active{transform:translateY(1px);}
.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 38px;
  background:
    radial-gradient(680px 320px at 8% -20%,rgba(37,214,168,.15),transparent 70%),
    radial-gradient(560px 300px at 96% 0%,rgba(91,141,255,.15),transparent 72%),
    linear-gradient(180deg,rgba(10,17,32,.7),rgba(6,10,20,0));
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(110,150,220,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(110,150,220,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 40% 10%,#000 18%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 40% 10%,#000 18%,transparent 76%);
}
.crumb{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:18px;
}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:rgba(147,165,196,.45);}
.post-tag{
  position:relative;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;color:#c8f7e8;
  background:var(--accent-soft);border:1px solid var(--line-strong);
  margin-bottom:18px;
}
.post-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(37,214,168,.18);}
.page-title{
  position:relative;z-index:2;
  font-size:clamp(24px,3vw,36px);
  letter-spacing:.3px;
  max-width:900px;
  color:#f2f8ff;
}
.post-meta{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin-top:20px;font-size:13.5px;color:var(--muted);
}
.post-meta span{display:inline-flex;align-items:center;gap:7px;}
.post-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);}

/* ---------- article layout ---------- */
.article-wrap{padding:44px 0 60px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,720px) minmax(0,308px);
  gap:34px;
  justify-content:center;
  align-items:start;
}
.article-card{
  background:linear-gradient(180deg,rgba(16,29,51,.92),rgba(10,17,32,.92));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:30px 32px 34px;
  box-shadow:var(--shadow-sm);
  min-width:0;
}
.article-body{font-size:16.5px;line-height:1.95;color:#c9d6ea;word-break:normal;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:22px;margin:34px 0 14px;color:#f0f8ff;
  padding-left:13px;border-left:3px solid var(--accent);
}
.article-body h3{font-size:18px;margin:26px 0 10px;color:#dff7ef;}
.article-body h4{font-size:16.5px;margin:20px 0 8px;color:#dff7ef;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:10px;}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#7dffd8;}
.article-body img{border-radius:12px;margin:22px auto;border:1px solid var(--line);}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;
  border-left:3px solid var(--accent-2);
  background:rgba(91,141,255,.08);
  border-radius:0 12px 12px 0;color:#d7e3f6;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;margin:20px 0;border-collapse:collapse;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:rgba(91,141,255,.1);color:#e6f2ff;font-weight:600;}
.article-body strong{color:#ffffff;}
.empty-state{
  text-align:center;padding:56px 20px;
  border:1px dashed var(--line);border-radius:var(--radius);
  background:rgba(255,255,255,.02);
}
.empty-state h2{font-size:20px;margin-bottom:12px;color:#eaf3ff;}
.empty-state p{color:var(--muted);}
.empty-state .btn-neon{margin-top:12px;}

/* ---------- sidebar ---------- */
.article-side{display:grid;gap:20px;min-width:0;}
.side-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-sm);
}
.side-card h2,.side-card h3{
  font-size:15.5px;color:#eaf3ff;margin-bottom:14px;
  display:flex;align-items:center;gap:9px;
}
.side-card h3::before,.side-card h2::before{
  content:"";width:4px;height:15px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),var(--accent-2));
}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--muted);line-height:1.75;
  padding:9px 0;border-bottom:1px dashed rgba(110,150,220,.14);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list li::before{
  content:"";width:6px;height:6px;flex:0 0 6px;margin-top:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px rgba(37,214,168,.65);
}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 15px;border-radius:12px;font-size:14.5px;font-weight:600;
  color:#dff7ef;background:var(--accent-soft);
  border:1px solid var(--line-strong);
}
.side-link:hover{background:rgba(37,214,168,.2);color:#fff;transform:translateX(2px);}
.side-link span{color:var(--accent);}
.side-note{font-size:13px;color:var(--muted);line-height:1.8;margin:0;}
.side-cta .btn-neon{width:100%;}

/* ---------- content blocks ---------- */
.section{padding:56px 0;}
.section-soft{background:linear-gradient(180deg,rgba(10,17,32,.75),rgba(6,10,20,.35));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:30px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--accent);letter-spacing:1px;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section-head h2{font-size:clamp(21px,2.4vw,28px);color:#f2f8ff;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.9;}
.point-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.point-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;min-width:0;
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.point-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.point-card .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:14px;
  font-size:14px;font-weight:800;color:#04121a;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.point-card h3{font-size:16.5px;color:#eaf3ff;margin-bottom:10px;}
.point-card p{font-size:14.5px;color:var(--muted);line-height:1.85;margin:0;}

.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 26px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;border-radius:12px;
  background:rgba(255,255,255,.025);border:1px solid var(--line);
  min-width:0;
}
.check-item::before{
  content:"";flex:0 0 18px;width:18px;height:18px;margin-top:4px;border-radius:6px;
  background:var(--accent-soft);border:1px solid var(--line-strong);
  box-shadow:inset 0 0 0 3px rgba(37,214,168,.16);
}
.check-item strong{display:block;font-size:15px;color:#eaf3ff;margin-bottom:5px;}
.check-item span{font-size:14px;color:var(--muted);line-height:1.8;}

.term-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.term-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;min-width:0;transition:border-color .22s ease;
}
.term-card:hover{border-color:rgba(91,141,255,.4);}
.term-card h3{font-size:15.5px;color:#9ff5dd;margin-bottom:9px;}
.term-card p{font-size:14px;color:var(--muted);line-height:1.85;margin:0;}

.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.faq-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;min-width:0;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-sm);}
.faq-card h3{font-size:15.5px;color:#eaf3ff;margin-bottom:10px;line-height:1.6;}
.faq-card p{font-size:14.5px;color:var(--muted);line-height:1.88;margin:0;}

.risk-bar{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 22px;border-radius:var(--radius);
  background:var(--warn-soft);border:1px solid rgba(242,181,68,.34);
  margin-top:26px;
}
.risk-bar strong{color:var(--warn);flex:0 0 auto;font-size:14.5px;}
.risk-bar p{margin:0;font-size:14px;color:#e7d6b2;line-height:1.85;}

/* ---------- download ---------- */
.download-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(520px 260px at 88% 0%,rgba(91,141,255,.22),transparent 70%),
    linear-gradient(135deg,rgba(16,29,51,.98),rgba(8,16,30,.98));
  box-shadow:var(--shadow);
  padding:38px 36px;
}
.download-panel h2{font-size:clamp(20px,2.3vw,26px);color:#f2f8ff;}
.download-panel .dl-lead{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.9;max-width:640px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:26px;}
.dl-btn{
  display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:14px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(110,150,220,.28);
  min-width:0;transition:transform .22s ease,border-color .22s ease,background-color .22s ease,box-shadow .22s ease;
}
.dl-btn:hover{transform:translateY(-3px);border-color:var(--accent);background:rgba(37,214,168,.1);box-shadow:0 16px 34px rgba(2,8,20,.5);}
.dl-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.dl-ico{
  flex:0 0 40px;width:40px;height:40px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#04121a;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.dl-text{min-width:0;}
.dl-text strong{display:block;font-size:15px;color:#eaf3ff;white-space:nowrap;}
.dl-text small{display:block;font-size:12.5px;color:var(--muted);white-space:nowrap;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;padding:52px 0 26px;
  background:linear-gradient(180deg,rgba(10,17,32,.9),rgba(4,8,16,1));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{font-size:16.5px;color:#eaf3ff;}
.footer-about{font-size:13.5px;color:var(--muted);line-height:1.9;margin:0;max-width:520px;}
.footer-col h4{font-size:14.5px;color:#eaf3ff;margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:13.8px;color:var(--muted);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:36px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
  font-size:12.8px;color:rgba(147,165,196,.82);
}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);max-width:820px;margin:0 auto;}
  .article-side{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .article-side .side-cta{grid-column:1 / -1;}
  .term-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:992px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:100%;left:-22px;right:-22px;
    flex-direction:column;align-items:stretch;gap:6px;
    margin-left:0;padding:14px 22px 20px;
    background:rgba(7,13,25,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(2,8,20,.6);
    display:none;
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:11px 16px;border-radius:12px;}
  .nav-actions{margin-left:auto;}
  .nav-actions .btn-neon{padding:10px 18px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:768px){
  .page-hero{padding:34px 0 30px;}
  .article-wrap{padding:32px 0 44px;}
  .article-card{padding:24px 20px 26px;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .point-grid,.term-grid,.faq-grid,.check-grid{grid-template-columns:minmax(0,1fr);}
  .dl-grid{grid-template-columns:minmax(0,1fr);}
  .download-panel{padding:28px 22px;}
  .section{padding:44px 0;}
  .brand-text small{display:none;}
  .risk-bar{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .site-container{padding-left:16px;padding-right:16px;}
  .brand-text strong{font-size:15.5px;}
  .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:17px;}
  .page-title{font-size:22px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:19.5px;}
  .article-body h3{font-size:17px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .dl-btn{padding:14px 16px;}
  .post-meta{gap:8px 16px;font-size:12.8px;}
}

/* roulang page: category1 */
:root{
  --bg:#060a14;
  --bg-soft:#0a1120;
  --panel:#0d1729;
  --panel-2:#101d33;
  --line:rgba(110,150,220,.16);
  --line-strong:rgba(37,214,168,.42);
  --text:#e9effa;
  --muted:#93a5c4;
  --accent:#25d6a8;
  --accent-2:#5b8dff;
  --accent-soft:rgba(37,214,168,.12);
  --warn:#f2b544;
  --warn-soft:rgba(242,181,68,.12);
  --radius-lg:22px;
  --radius:14px;
  --shadow:0 24px 60px rgba(2,8,20,.55);
  --shadow-sm:0 10px 26px rgba(2,8,20,.42);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;line-height:1.34;font-weight:700;letter-spacing:.3px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
::selection{background:rgba(37,214,168,.3);color:#fff;}
section[id]{scroll-margin-top:96px;}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding-left:22px;padding-right:22px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,20,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:74px;flex-wrap:nowrap;position:relative;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;flex:0 1 auto;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;color:#04121a;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 8px 22px rgba(37,214,168,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0;}
.brand-text strong{font-size:17px;letter-spacing:.5px;white-space:nowrap;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:.6px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;
  font-size:14.5px;color:var(--muted);white-space:nowrap;
  border:1px solid transparent;
}
.nav-link:hover{color:#fff;background:rgba(91,141,255,.12);border-color:rgba(91,141,255,.28);}
.nav-link.active{
  color:#eafff8;background:var(--accent-soft);
  border-color:var(--line-strong);
  box-shadow:0 0 0 1px rgba(37,214,168,.12),0 0 22px rgba(37,214,168,.18);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#04121a;
  background:linear-gradient(135deg,var(--accent),#3fb0ff);
  box-shadow:0 12px 28px rgba(37,214,168,.26);
}
.btn-neon:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(37,214,168,.36);color:#04121a;}
.btn-neon:active{transform:translateY(0);}
.btn-neon:focus-visible,.btn-ghost:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,.dl-btn:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:999px;cursor:pointer;font-size:15px;font-weight:600;
  color:var(--text);background:rgba(255,255,255,.035);border:1px solid rgba(110,150,220,.34);
}
.btn-ghost:hover{color:#fff;border-color:var(--accent);background:var(--accent-soft);}
.btn-ghost:active{transform:translateY(1px);}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:44px 0 62px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(760px 360px at 8% -12%,rgba(37,214,168,.15),transparent 68%),
    radial-gradient(620px 340px at 94% 2%,rgba(91,141,255,.15),transparent 72%),
    linear-gradient(180deg,rgba(10,17,32,.62),rgba(6,10,20,0));
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(110,150,220,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(110,150,220,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 52% 12%,#000 18%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 52% 12%,#000 18%,transparent 76%);
}
.cat-hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.16fr) minmax(0,.84fr);
  gap:46px;align-items:start;
}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:#7d8fae;margin-bottom:18px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:rgba(147,165,196,.45);}
.cat-title{
  font-size:clamp(26px,3.1vw,40px);
  letter-spacing:.4px;
  background:linear-gradient(120deg,#ffffff 0%,#cfe6ff 60%,#8ff0d6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-lead{margin-top:18px;color:var(--muted);font-size:16px;line-height:1.95;max-width:660px;}
.cat-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cat-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:28px;padding-top:22px;border-top:1px dashed var(--line);}
.cat-points li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--muted);max-width:100%;}
.cat-points li::before{
  content:"";width:6px;height:6px;margin-top:10px;border-radius:50%;
  background:var(--accent);flex:0 0 6px;box-shadow:0 0 10px rgba(37,214,168,.7);
}
.quick-panel{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,29,51,.96),rgba(10,17,32,.96));
  box-shadow:var(--shadow);
  padding:26px 24px;
  min-width:0;
}
.quick-panel h2{font-size:16px;color:#eafff8;letter-spacing:.6px;}
.quick-panel .qp-sub{margin-top:6px;font-size:13px;color:#7d8fae;}
.qp-list{margin-top:18px;display:grid;gap:12px;}
.qp-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  font-size:14.2px;color:#cfdcf1;min-width:0;
}
.qp-list li em{
  font-style:normal;flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:800;color:var(--accent);
  background:var(--accent-soft);border:1px solid var(--line-strong);
}
.quick-panel .qp-note{margin-top:18px;font-size:12.8px;color:#7d8fae;line-height:1.8;}

/* ---------- sections ---------- */
.page-section{padding:66px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:1.6px;color:var(--accent);
  margin-bottom:12px;font-weight:700;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--accent);border-radius:2px;box-shadow:0 0 12px rgba(37,214,168,.8);}
.section-head h2{font-size:clamp(21px,2.4vw,29px);}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.2px;line-height:1.9;}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}

.entry-card{
  background:linear-gradient(180deg,var(--panel),var(--bg-soft));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;min-width:0;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 44px rgba(2,8,20,.52);}
.entry-num{font-size:12.5px;font-weight:800;letter-spacing:2.4px;color:var(--accent);}
.entry-card h3{margin-top:12px;font-size:18.5px;}
.entry-card p{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.86;}

/* terms */
.term-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.term-card{
  background:rgba(13,23,41,.86);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;min-width:0;
  transition:border-color .22s ease,transform .22s ease;
}
.term-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.term-card dt{font-size:16.5px;font-weight:700;color:#eafff8;}
.term-card dd{margin:10px 0 0;color:var(--muted);font-size:14.4px;line-height:1.86;}

/* flow */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.flow-step{
  background:linear-gradient(180deg,var(--panel),var(--bg-soft));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;min-width:0;
}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--accent-soft);border:1px solid var(--line-strong);
  color:var(--accent);font-weight:800;font-size:14px;
}
.flow-step h3{margin-top:14px;font-size:17px;}
.flow-step p{margin-top:8px;color:var(--muted);font-size:14.3px;line-height:1.84;}

/* clause */
.clause-card{
  background:rgba(13,23,41,.86);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 24px;min-width:0;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.clause-card:hover{border-color:rgba(91,141,255,.4);box-shadow:0 18px 38px rgba(2,8,20,.46);}
.clause-tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
  font-size:12px;color:#cfe0ff;background:rgba(91,141,255,.14);
  border:1px solid rgba(91,141,255,.3);
}
.clause-card h3{margin-top:14px;font-size:18px;}
.clause-card p{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.88;}

/* checklist */
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px;margin-top:22px;}
.check-list li{position:relative;padding-left:26px;color:var(--muted);font-size:14.8px;line-height:1.8;}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  color:var(--accent);font-weight:800;
}
.warn-box{
  margin-top:26px;border:1px solid rgba(242,181,68,.34);
  background:var(--warn-soft);border-radius:var(--radius);
  padding:20px 22px;color:#f6dca8;font-size:14.6px;line-height:1.86;
}
.warn-box strong{color:#ffd98a;}

/* faq */
.faq-list{display:grid;gap:14px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(13,23,41,.82);overflow:hidden;
  transition:border-color .22s ease;
}
.faq-item:hover{border-color:rgba(91,141,255,.34);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--accent);font-size:20px;line-height:1;flex:0 0 auto;}
.faq-item[open] summary::after{content:"−";}
.faq-item p{padding:0 22px 20px;color:var(--muted);font-size:14.6px;line-height:1.88;}

/* posts */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.post-card{
  display:flex;flex-direction:column;gap:10px;
  background:linear-gradient(180deg,var(--panel),var(--bg-soft));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;min-width:0;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 42px rgba(2,8,20,.5);}
.post-tag{
  align-self:flex-start;font-size:12px;padding:4px 11px;border-radius:999px;
  color:#c8f7e8;background:var(--accent-soft);border:1px solid var(--line-strong);
}
.post-title{font-size:16.5px;line-height:1.56;}
.post-desc{color:var(--muted);font-size:14.2px;line-height:1.8;}
.post-meta{margin-top:auto;padding-top:6px;color:#7d8fae;font-size:12.8px;}
.list-empty{color:var(--muted);font-size:14.6px;padding:22px;border:1px dashed var(--line);border-radius:var(--radius);}

/* download */
.dl-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(620px 260px at 10% -10%,rgba(37,214,168,.18),transparent 70%),
    linear-gradient(180deg,var(--panel-2),rgba(10,17,32,.94));
  padding:40px clamp(20px,4vw,48px);
  box-shadow:var(--shadow);
}
.dl-panel h2{font-size:clamp(21px,2.4vw,28px);}
.dl-panel .dl-sub{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.9;max-width:720px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:28px;}
.dl-btn{
  display:flex;flex-direction:column;gap:4px;
  padding:18px 20px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(255,255,255,.035);
  min-width:0;
  transition:transform .22s ease,border-color .22s ease,background-color .22s ease,box-shadow .22s ease;
}
.dl-btn strong{font-size:16px;color:var(--text);}
.dl-btn span{font-size:12.8px;color:var(--muted);}
.dl-btn:hover{transform:translateY(-3px);border-color:var(--line-strong);background:var(--accent-soft);box-shadow:0 16px 32px rgba(2,8,20,.46);}
.dl-note{margin-top:20px;font-size:13px;color:#7d8fae;line-height:1.8;}

/* footer */
.site-footer{
  background:linear-gradient(180deg,rgba(8,14,26,.7),#050912);
  border-top:1px solid var(--line);
  padding:54px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) minmax(0,1fr);gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:16px;}
.footer-about{color:var(--muted);font-size:13.8px;line-height:1.92;max-width:560px;}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--text);letter-spacing:.5px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:var(--muted);font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  color:#7d8fae;font-size:13px;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    margin-left:0;padding:12px 18px 18px;
    background:rgba(8,14,26,.98);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-sm);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-actions{margin-left:0;}
  .nav-link{padding:12px 14px;border-radius:12px;}
  .cat-hero-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .grid-3,.term-grid,.flow-grid,.post-grid,.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-list{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;}
}
@media (max-width:768px){
  .site-container{padding-left:18px;padding-right:18px;}
  .cat-hero{padding:32px 0 44px;}
  .page-section{padding:48px 0;}
  .grid-2{grid-template-columns:minmax(0,1fr);}
  .section-head{margin-bottom:28px;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:520px){
  .brand-text small{display:none;}
  .nav-actions .btn-neon{padding:10px 16px;font-size:13.5px;}
  .grid-3,.term-grid,.flow-grid,.post-grid,.dl-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .cat-actions .btn-neon,.cat-actions .btn-ghost{width:100%;}
  .dl-panel{padding:28px 20px;}
}