/* roulang page: index */
:root{
  --ink-900:#05080E;
  --ink-800:#0A1018;
  --ink-700:#101827;
  --ink-600:#172133;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --txt-1:#E9F0FA;
  --txt-2:#A6B4C8;
  --txt-3:#6B7A90;
  --brand:#2F7BF6;
  --brand-deep:#1B5FD0;
  --key:#2FD9B4;
  --key-soft:rgba(47,217,180,.14);
  --vip:#8B7BFF;
  --warn:#FFC26B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.7);
  --shadow-glow:0 0 0 1px rgba(47,217,180,.35),0 10px 30px -10px rgba(47,217,180,.55);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{display:block;max-width:100%;height:auto;background:var(--ink-700);}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
time,strong{font-variant-numeric:tabular-nums;}
input{font:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--key);outline-offset:2px;border-radius:6px;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:108px 0;position:relative;}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,36px);
  line-height:1.25;
  font-weight:650;
  color:var(--txt-1);
  letter-spacing:.01em;
}
.section-head p{margin-top:10px;font-size:15px;color:var(--txt-3);max-width:620px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--key);
  margin-bottom:14px;
  text-transform:none;
}
.link-more{
  font-size:14px;
  color:var(--txt-3);
  white-space:nowrap;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
}
.link-more:hover{color:var(--key);border-bottom-color:var(--key);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .2s var(--ease),filter .2s var(--ease);
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--key),var(--brand));
  color:var(--ink-900);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,217,180,.5),0 16px 40px -12px rgba(47,217,180,.6);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--txt-1);
  background:rgba(23,33,51,.35);
}
.btn-ghost:hover{background:rgba(47,217,180,.10);border-color:rgba(47,217,180,.45);color:var(--txt-1);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:var(--radius-pill);}
.btn-disabled,.btn[disabled]{filter:saturate(.4);opacity:.6;box-shadow:none;cursor:not-allowed;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,8,14,.92),rgba(5,8,14,.62));
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:linear-gradient(160deg,rgba(23,33,51,.78),rgba(10,16,24,.62));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 18px 40px -28px rgba(0,0,0,.9);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .site-header.is-scrolled{background:var(--ink-700);}
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(47,217,180,.22),rgba(47,123,246,.28));
  border:1px solid rgba(47,217,180,.35);
  color:var(--key);
  flex:none;
}
.brand-text{font-size:16px;font-weight:600;color:var(--txt-1);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:36px;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  color:var(--txt-2);
  padding:6px 0;
}
.nav-link:hover{color:var(--txt-1);transform:translateY(-1px);}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:0;
  width:0;height:2px;
  background:var(--key);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width .25s var(--ease);
}
.nav-link.is-active{color:var(--txt-1);}
.nav-link.is-active::after{width:22px;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line-strong);
  position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:1.5px;background:var(--txt-1);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span:nth-child(1){top:16px;}
.nav-toggle span:nth-child(2){bottom:16px;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}
.mobile-drawer{
  position:fixed;
  inset:60px 0 0 0;
  z-index:88;
  background:linear-gradient(160deg,rgba(23,33,51,.94),rgba(5,8,14,.96));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  padding:24px 20px 32px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  overflow-y:auto;
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .mobile-drawer{background:var(--ink-700);}
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-drawer a.drawer-link{
  display:block;
  font-size:20px;
  font-weight:500;
  color:var(--txt-1);
  padding:20px 4px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link:hover,.mobile-drawer a.drawer-link.is-active{color:var(--key);}
.drawer-foot{margin-top:32px;display:flex;flex-direction:column;gap:16px;}
.drawer-foot .drawer-brand{font-size:13px;letter-spacing:.16em;color:var(--txt-3);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:92px 0 104px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(5,8,14,.2),rgba(5,8,14,.95)),
    radial-gradient(1100px 520px at 82% -12%,rgba(47,217,180,.09),transparent 62%);
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.hero-eyebrow{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--key);
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(32px,4.2vw,54px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--txt-1);
  margin-bottom:22px;
}
.hero-sub{
  font-size:17px;
  line-height:1.9;
  color:var(--txt-2);
  max-width:560px;
  margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:14px;color:var(--txt-3);}
.hero-trust li{display:flex;align-items:center;gap:8px;}
.hero-trust li::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--key);
  box-shadow:0 0 10px rgba(47,217,180,.8);
}
.hero-media{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:5/4;
  background:var(--ink-700);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,14,.15),rgba(5,8,14,.65));
}
.hero-card{
  position:absolute;
  left:22px;right:22px;bottom:22px;
  padding:18px 20px;
  border-radius:16px;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  display:flex;
  flex-direction:column;
  gap:4px;
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .hero-card{background:var(--ink-700);}
}
.hero-card-label{font-size:12px;letter-spacing:.14em;color:var(--txt-3);}
.hero-card-value{font-size:19px;font-weight:650;color:var(--key);}
.hero-card-note{font-size:13px;color:var(--txt-2);}

/* ---------- matrix / table ---------- */
.matrix-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(16,24,39,.7),rgba(10,16,24,.5));
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
table.benefit-table th,table.benefit-table td{
  padding:0 24px;
  height:56px;
  font-size:15px;
  text-align:center;
  border-bottom:1px solid var(--line);
  color:var(--txt-2);
  vertical-align:middle;
}
table.benefit-table thead th{
  font-size:15px;
  font-weight:600;
  color:var(--txt-1);
  background:rgba(255,255,255,.02);
}
table.benefit-table tbody tr:nth-child(even) td,table.benefit-table tbody tr:nth-child(even) th{background:rgba(255,255,255,.02);}
table.benefit-table th[scope="row"]{
  text-align:left;
  font-weight:500;
  color:var(--txt-1);
  border-right:1px solid var(--line);
}
table.benefit-table tr:last-child th,table.benefit-table tr:last-child td{border-bottom:none;}
.col-rec{
  background:var(--key-soft) !important;
  border-left:1px solid rgba(47,217,180,.35);
  border-right:1px solid rgba(47,217,180,.35);
  color:var(--txt-1) !important;
}
thead th.col-rec{position:relative;}
.tag-rec{
  display:inline-block;
  margin-left:8px;
  padding:2px 8px;
  font-size:12px;
  font-weight:600;
  border-radius:6px;
  color:var(--ink-900);
  background:var(--key);
  vertical-align:middle;
}
.tick{color:var(--key);font-weight:600;}
.dash{color:var(--txt-3);}
.benefit-note{margin-top:20px;font-size:13px;color:var(--txt-3);}
.benefit-cards{display:none;}

/* ---------- levels ---------- */
.levels{display:grid;grid-template-columns:6fr 3fr 3fr;gap:24px;}
.level-card{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:linear-gradient(165deg,rgba(16,24,39,.92),rgba(10,16,24,.72));
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:18px;
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.level-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.level-card.is-feature{border-color:rgba(47,217,180,.4);box-shadow:var(--shadow-glow),inset 0 1px 0 rgba(255,255,255,.06);}
.level-top{display:flex;align-items:center;gap:10px;}
.level-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:none;}
.level-card.is-feature .level-dot{background:var(--key);box-shadow:0 0 12px rgba(47,217,180,.85);}
.level-name{font-size:15px;font-weight:600;color:var(--txt-1);letter-spacing:.02em;}
.level-num{
  font-size:clamp(40px,4.6vw,56px);
  font-weight:700;
  line-height:1;
  color:var(--txt-1);
  letter-spacing:-.01em;
}
.level-num small{font-size:16px;font-weight:500;color:var(--txt-3);margin-left:8px;letter-spacing:0;}
.level-list{display:flex;flex-direction:column;gap:10px;font-size:15px;color:var(--txt-2);}
.level-list li{display:flex;gap:10px;align-items:flex-start;}
.level-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--key);margin-top:11px;flex:none;}
.level-divider{height:1px;background:var(--line);}
.level-link{font-size:14px;color:var(--txt-3);}
.level-link:hover{color:var(--key);}

/* ---------- preview ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.preview-card{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--ink-700);
  box-shadow:var(--shadow-card);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.preview-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.preview-media{position:relative;aspect-ratio:16/10;overflow:hidden;}
.preview-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.preview-card:hover .preview-media img{transform:scale(1.03);}
.preview-lock{
  position:absolute;inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.62));
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  backdrop-filter:blur(10px) saturate(140%);
  color:var(--txt-1);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .preview-lock{background:rgba(10,16,24,.88);}
}
.preview-lock svg{color:var(--key);}
.preview-lock span{font-size:13px;letter-spacing:.06em;color:var(--txt-2);}
.preview-body{padding:24px 26px 28px;}
.preview-body h3{font-size:19px;font-weight:600;color:var(--txt-1);margin-bottom:10px;}
.preview-body p{font-size:14px;color:var(--txt-2);margin-bottom:16px;}
.preview-body .tag{
  display:inline-block;
  font-size:12px;
  padding:3px 10px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  color:var(--txt-3);
  margin-bottom:12px;
}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:24px;align-items:start;}
.news-feature{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:linear-gradient(165deg,rgba(16,24,39,.92),rgba(10,16,24,.72));
  box-shadow:var(--shadow-card);
  transition:border-color .25s var(--ease);
}
.news-feature:hover{border-color:var(--line-strong);}
.news-feature-media{position:relative;overflow:hidden;background:var(--ink-700);min-height:100%;}
.news-feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-feature:hover .news-feature-media img{transform:scale(1.03);}
.news-feature-body{padding:28px;display:flex;flex-direction:column;gap:12px;}
.badge{
  align-self:flex-start;
  font-size:12px;
  padding:3px 10px;
  border-radius:6px;
  color:var(--key);
  background:var(--key-soft);
  border:1px solid rgba(47,217,180,.28);
}
.news-feature-body h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--txt-1);}
.news-feature-body h3 a:hover{color:var(--key);}
.news-feature-body p{font-size:14px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{font-size:13px;color:var(--txt-3);margin-top:auto;}
.news-side{display:flex;flex-direction:column;gap:14px;}
.news-mini{
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:16px;
  padding:14px;
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(16,24,39,.6);
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.news-mini:hover{border-color:var(--line-strong);background:rgba(23,33,51,.7);}
.news-mini-media{width:96px;height:72px;border-radius:10px;overflow:hidden;background:var(--ink-700);}
.news-mini-media img{width:100%;height:100%;object-fit:cover;}
.news-mini-body{display:flex;flex-direction:column;gap:6px;min-width:0;}
.news-mini-body h3{
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:var(--txt-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-mini-body h3 a:hover{color:var(--key);}
.news-mini-body p{
  font-size:13px;
  color:var(--txt-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-mini-foot{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--txt-3);margin-top:2px;}
.news-mini-foot .badge{font-size:11px;padding:2px 8px;}
.empty-state{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(23,33,51,.6),rgba(10,16,24,.5));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  padding:56px 24px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .empty-state{background:var(--ink-700);}
}
.empty-state svg{color:var(--key);}
.empty-state strong{font-size:16px;color:var(--txt-1);font-weight:600;}
.empty-state span{font-size:14px;color:var(--txt-3);}

/* ---------- stats strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;border-top:1px solid var(--line);padding-top:40px;margin-top:56px;}
.stat-num{font-size:clamp(32px,3.4vw,44px);font-weight:700;color:var(--txt-1);line-height:1.1;}
.stat-num em{font-style:normal;color:var(--key);}
.stat-label{font-size:13px;color:var(--txt-3);margin-top:6px;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:24px 4px;
  font-size:16px;
  font-weight:600;
  color:var(--txt-1);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--key);}
.faq-icon{position:relative;width:16px;height:16px;flex:none;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--key);border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;right:0;top:7px;height:1.6px;}
.faq-icon::after{top:0;bottom:0;left:7px;width:1.6px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease);}
.faq-a p{padding:0 4px 26px;font-size:15px;line-height:1.85;color:var(--txt-2);max-width:860px;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55)),
    linear-gradient(90deg,rgba(47,217,180,.10),rgba(47,123,246,.10));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  padding:64px 0;
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .cta-band{background:var(--ink-700);}
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:650;color:var(--txt-1);line-height:1.35;}
.cta-inner p{font-size:15px;color:var(--txt-3);margin-top:10px;max-width:620px;}
.cta-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.cta-side small{font-size:13px;color:var(--txt-3);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-800);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;inset:0 0 auto 0;height:200px;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent);
  pointer-events:none;
}
.footer-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;flex-direction:column;gap:14px;}
.footer-brand .brand-text{font-size:16px;}
.footer-brand p{font-size:14px;color:var(--txt-3);max-width:300px;}
.footer-col h3{font-size:14px;font-weight:600;color:var(--txt-1);letter-spacing:.06em;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--txt-3);}
.footer-col a:hover{color:var(--key);text-decoration:underline;text-underline-offset:3px;}
.footer-col li span{font-size:14px;color:var(--txt-3);}
.footer-bottom{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:26px;
  font-size:13px;
  color:var(--txt-3);
  flex-wrap:wrap;
}
.footer-bottom .sep{color:var(--line-strong);}

/* ---------- breakpoints ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
  .section{padding:96px 0;}
  .hero-inner{gap:44px;}
}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero-media{aspect-ratio:16/9;max-height:420px;}
  .levels{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .level-card.is-feature{grid-column:span 2;}
  .preview-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-layout{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:block;}
  .nav-inner{height:60px;}
  .site-header.is-scrolled .nav-inner{height:60px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:68px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .hero{padding:64px 0 72px;}
  .hero-media{aspect-ratio:16/10;max-height:220px;}
  .hero-card{left:14px;right:14px;bottom:14px;padding:14px 16px;}
  .hero-card-value{font-size:16px;}
  .matrix-wrap{display:none;}
  .benefit-cards{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;}
  .benefit-card{
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    background:linear-gradient(165deg,rgba(16,24,39,.92),rgba(10,16,24,.72));
    box-shadow:var(--shadow-card);
    padding:24px;
  }
  .benefit-card.is-feature{border-color:rgba(47,217,180,.4);box-shadow:var(--shadow-glow);}
  .benefit-card h3{font-size:18px;color:var(--txt-1);font-weight:650;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
  .benefit-card ul{display:flex;flex-direction:column;}
  .benefit-card li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;}
  .benefit-card li:last-child{border-bottom:none;}
  .benefit-card li span{color:var(--txt-3);}
  .benefit-card li strong{color:var(--txt-1);font-weight:500;text-align:right;}
  .levels{grid-template-columns:minmax(0,1fr);}
  .level-card.is-feature{grid-column:auto;}
  .preview-grid{grid-template-columns:minmax(0,1fr);}
  .news-feature{grid-template-columns:minmax(0,1fr);}
  .news-feature-media{aspect-ratio:16/10;min-height:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-side{align-items:flex-start;width:100%;}
  .cta-side .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-sub{font-size:15px;}
  .news-mini{grid-template-columns:80px minmax(0,1fr);gap:12px;padding:12px;}
  .news-mini-media{width:80px;height:64px;}
  .stats{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .nav-toggle{width:44px;width:44px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#05080E;
  --ink-800:#0A1018;
  --ink-700:#101827;
  --ink-600:#172133;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --txt-1:#E9F0FA;
  --txt-2:#A6B4C8;
  --txt-3:#6B7A90;
  --brand:#2F7BF6;
  --brand-deep:#1B5FD0;
  --key:#2FD9B4;
  --key-soft:rgba(47,217,180,.14);
  --vip:#8B7BFF;
  --warn:#FFC26B;
  --radius-card:18px;
  --radius-btn:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.7);
  --shadow-glow:0 0 0 1px rgba(47,217,180,.35), 0 10px 30px -10px rgba(47,217,180,.55);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:focus-visible,button:focus-visible,.faq-q:focus-visible{outline:2px solid var(--key);outline-offset:2px;border-radius:4px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--txt-1);font-weight:650;letter-spacing:.01em}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 背景纹理 ---------- */
.grid-bg{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(120% 80% at 50% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 80% at 50% 0%,#000 0%,transparent 78%);
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,14,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .25s var(--ease),height .25s var(--ease);
}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .site-header{background:var(--ink-800)}
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s var(--ease)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--txt-1);font-weight:600;font-size:16px;letter-spacing:.02em}
.brand:hover{color:#fff}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,rgba(47,217,180,.20),rgba(47,123,246,.16));
  border:1px solid var(--line-strong);
  color:var(--key);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:36px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;letter-spacing:.02em;color:var(--txt-2);
  padding:6px 2px;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-4px;width:6px;height:6px;border-radius:50%;
  background:var(--key);opacity:0;transform:translateX(-50%) scale(.4);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{color:var(--txt-1);transform:translateY(-1px)}
.nav-link.is-active{color:var(--txt-1);font-weight:600}
.nav-link.is-active::after{opacity:1;transform:translateX(-50%) scale(1)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);position:relative}
.nav-toggle span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--txt-1);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:23px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.nav-toggle:hover{border-color:var(--key)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  color:#04160F;
  background:linear-gradient(120deg,var(--key),var(--brand));
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,217,180,.45),0 16px 40px -12px rgba(47,217,180,.65)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,217,180,.35),0 6px 18px -10px rgba(47,217,180,.5)}
.btn-ghost{
  color:var(--txt-1);border:1px solid var(--line-strong);background:transparent;
}
.btn-ghost:hover{background:rgba(47,217,180,.10);border-color:rgba(47,217,180,.5);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn:disabled,.btn[disabled]{filter:saturate(.6);opacity:.65;box-shadow:none;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--key);font-size:14px;font-weight:600}
.link-arrow:hover{gap:10px;text-decoration:underline;text-underline-offset:4px}

/* ---------- 标签/徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--key);background:var(--key-soft);border:1px solid rgba(47,217,180,.25);
}
.tag-vip{color:#BDB3FF;background:rgba(139,123,255,.12);border-color:rgba(139,123,255,.28)}
.tag-line{color:var(--txt-3);background:rgba(255,255,255,.03);border-color:var(--line)}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;position:relative}
.section-alt{background:var(--ink-800)}
.section-head{max-width:680px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;margin-bottom:14px}
.section-head p{color:var(--txt-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--txt-3);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--key);display:inline-block}

/* ---------- 分类页头 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);border-bottom:1px solid var(--line)}
.page-hero .grid-bg{opacity:.9}
.page-hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
  padding:72px 0 84px;
}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--txt-3);margin-bottom:22px}
.breadcrumb a:hover{color:var(--key)}
.breadcrumb .sep{opacity:.6}
.page-hero h1{font-size:clamp(32px,4.2vw,54px);line-height:1.15;font-weight:700;margin-bottom:18px}
.page-hero .lede{font-size:17px;color:var(--txt-2);max-width:620px}
.hero-badges{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:14px;color:var(--txt-2)}
.hero-badges li{display:inline-flex;align-items:center;gap:8px}
.hero-badges li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--key);box-shadow:0 0 10px rgba(47,217,180,.7)}
.hero-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-card)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--ink-700)}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,14,.15),rgba(5,8,14,.65))}
.hero-media figcaption{position:absolute;left:18px;right:18px;bottom:14px;z-index:2;font-size:13px;color:#DCE6F5}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:12px;bottom:12px;width:1px;background:linear-gradient(180deg,rgba(47,217,180,.55),rgba(255,255,255,.06))}
.step{position:relative;padding:0 0 40px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-33px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--key);box-shadow:0 0 0 4px rgba(47,217,180,.10);
}
.step-no{font-size:13px;font-weight:700;color:var(--key);letter-spacing:.12em;font-variant-numeric:tabular-nums}
.step h3{font-size:20px;margin:6px 0 10px;line-height:1.4}
.step p{color:var(--txt-2);font-size:15.5px}
.step .hint{
  margin-top:14px;display:inline-flex;flex-wrap:wrap;gap:8px;
}
.hint span{
  font-size:13px;color:var(--txt-2);background:var(--ink-700);
  border:1px solid var(--line);border-radius:999px;padding:4px 12px;
}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.split h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;margin-bottom:18px}
.split p{color:var(--txt-2)}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-card)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;background:var(--ink-700)}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,14,.15),rgba(5,8,14,.65))}
.split-media .caption{position:absolute;left:20px;right:20px;bottom:16px;z-index:2;font-size:13px;color:#DCE6F5}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--txt-2)}
.check-list li svg{flex:0 0 18px;margin-top:5px;color:var(--key)}

/* ---------- 条目清单卡 ---------- */
.card{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.entry-card{padding:10px 28px}
.entry{
  display:grid;grid-template-columns:180px 1fr auto;gap:24px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.entry:last-child{border-bottom:0}
.entry:hover{background:rgba(255,255,255,.02)}
.entry h3{font-size:17px;line-height:1.45}
.entry p{font-size:14.5px;color:var(--txt-2);margin:0}
.entry .tag{justify-self:end}

/* ---------- 数据条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.metric{
  padding:26px 24px;border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .metric{background:var(--ink-700)}
}
.metric strong{display:block;font-size:clamp(34px,4vw,48px);line-height:1.1;font-weight:700;color:var(--txt-1);font-variant-numeric:tabular-nums}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:var(--txt-3)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--txt-1);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--key)}
.faq-icon{flex:0 0 22px;position:relative;width:22px;height:22px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--key);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{width:13px;height:1.6px}
.faq-icon::after{width:1.6px;height:13px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--txt-2)}

/* ---------- CTA ---------- */
.cta-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
  .cta-band{background:var(--ink-700)}
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:46px 0}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:10px}
.cta-inner p{color:var(--txt-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.cta-actions .note{font-size:13px;color:var(--txt-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--txt-3);max-width:320px}
.footer-col h3{font-size:14px;letter-spacing:.06em;color:var(--txt-1);margin-bottom:16px;font-weight:600}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--txt-3)}
.footer-col a:hover{color:var(--key);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom .sep{opacity:.5}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px}
  .main-nav{gap:28px}
}
@media (max-width:1024px){
  .section{padding:84px 0}
  .page-hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 64px}
  .hero-media img{aspect-ratio:16/9}
  .split{grid-template-columns:1fr;gap:32px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .entry{grid-template-columns:150px 1fr;gap:18px}
  .entry .tag{grid-column:2;justify-self:start}
}
@media (max-width:900px){
  .header-inner{height:60px}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:12px 20px 26px;
    background:rgba(10,16,24,.94);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease);
  }
  .main-nav.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-link{width:100%;padding:16px 0;font-size:19px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--key)}
  .section{padding:72px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:38px 0}
  .cta-actions{align-items:flex-start}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .hero-media img{aspect-ratio:4/3}
  .entry-card{padding:6px 20px}
  .entry{grid-template-columns:1fr;gap:10px;padding:22px 0}
  .entry p{margin-top:2px}
  .entry .tag{grid-column:1;justify-self:start;margin-top:6px}
  .faq-q{font-size:15.5px;padding:18px 0}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .header-actions .btn-sm{display:none}
  .metrics{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .btn-sm{width:auto}
  .hero-badges{gap:12px;font-size:13px}
  .timeline{padding-left:26px}
  .timeline::before{left:6px}
  .step::before{left:-25px}
}

/* roulang page: article */
:root{
  --ink-900:#05080E;
  --ink-800:#0A1018;
  --ink-700:#101827;
  --ink-600:#172133;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --txt-1:#E9F0FA;
  --txt-2:#A6B4C8;
  --txt-3:#6B7A90;
  --brand:#2F7BF6;
  --brand-deep:#1B5FD0;
  --key:#2FD9B4;
  --key-soft:rgba(47,217,180,.14);
  --vip:#8B7BFF;
  --warn:#FFC26B;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(47,217,180,.35),0 10px 30px -10px rgba(47,217,180,.55);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:14px;background:var(--ink-700)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--key)}
a:focus-visible,button:focus-visible{outline:2px solid var(--key);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;color:var(--txt-1);letter-spacing:.01em;line-height:1.25;font-weight:650}
p{margin:0 0 20px}
ul,ol{margin:0 0 20px;padding-left:22px}
li{margin-bottom:8px}
button{font-family:inherit}
::selection{background:rgba(47,217,180,.28);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid var(--line);
  background:rgba(5,8,14,.86);
  transition:background .25s ease,backdrop-filter .25s ease,height .25s ease;
}
@supports (backdrop-filter:blur(16px)){
  .site-header{backdrop-filter:blur(16px) saturate(140%);background:linear-gradient(160deg,rgba(23,33,51,.62),rgba(10,16,24,.5))}
}
.header-inner{height:var(--header-h);display:flex;align-items:center;gap:28px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--txt-1);font-weight:600;font-size:16px;letter-spacing:.01em}
.brand:hover{color:var(--txt-1)}
.brand-mark{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(120deg,rgba(47,217,180,.22),rgba(47,123,246,.22));
  border:1px solid var(--line-strong);color:var(--key);
}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:34px;margin-left:12px}
.nav-link{
  position:relative;color:var(--txt-2);font-size:15px;font-weight:500;letter-spacing:.02em;
  padding:26px 0;transition:color .2s ease,transform .2s ease;
}
.nav-link:hover{color:var(--txt-1);transform:translateY(-1px)}
.nav-link.is-active{color:var(--txt-1)}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--key);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:12px;
  background:transparent;cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--txt-1);margin:3px auto;transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(4.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-4.6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  padding:12px 22px;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .25s ease;
}
.btn-key{
  background:linear-gradient(120deg,var(--key),var(--brand));
  color:var(--ink-900);
  box-shadow:var(--glow);
}
.btn-key:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,217,180,.45),0 16px 40px -12px rgba(47,217,180,.6);color:var(--ink-900)}
.btn-key:active{transform:translateY(1px)}
.btn-key[disabled],.btn-key.is-disabled{filter:saturate(.6);box-shadow:none;cursor:not-allowed;opacity:.7}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--txt-1);
}
.btn-ghost:hover{background:rgba(47,217,180,.10);border-color:rgba(47,217,180,.45);color:var(--txt-1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:var(--r-pill)}
.btn-block{width:100%}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:var(--header-h) 0 0 0;z-index:55;
  background:rgba(5,8,14,.96);
  border-top:1px solid var(--line);
  padding:26px 20px 40px;
  display:none;flex-direction:column;gap:0;
}
@supports (backdrop-filter:blur(16px)){
  .mobile-drawer{backdrop-filter:blur(18px) saturate(140%);background:linear-gradient(160deg,rgba(23,33,51,.85),rgba(10,16,24,.92))}
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer a.m-d-link{
  display:block;color:var(--txt-1);font-size:20px;font-weight:500;
  padding:18px 4px;border-bottom:1px solid var(--line);
}
.mobile-drawer a.m-d-link.is-active{color:var(--key)}
.mobile-drawer .m-d-foot{margin-top:auto;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:14px}
.mobile-drawer .m-d-brand{color:var(--txt-3);font-size:13px;letter-spacing:.04em}

/* ---------- page background ---------- */
.page-bg{
  position:relative;
  background-image:
    linear-gradient(180deg,rgba(5,8,14,.72),rgba(5,8,14,.96)),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(0deg,rgba(255,255,255,.035) 1px,transparent 1px),
    url("/assets/images/backpic/back-1.png");
  background-size:cover,48px 48px,48px 48px,cover;
  background-position:center,center,center,center;
  border-bottom:1px solid var(--line);
}
.page-bg::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 90% at 78% 0%,rgba(47,217,180,.10),transparent 60%);
}
.page-bg .container{position:relative;z-index:2}

/* ---------- breadcrumb ---------- */
.crumbs{padding:26px 0 6px;font-size:13px;color:var(--txt-3);display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.crumbs a{color:var(--txt-3)}
.crumbs a:hover{color:var(--key)}
.crumbs .sep{color:rgba(255,255,255,.2)}
.crumbs .now{color:var(--txt-2);max-width:52%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}

/* ---------- article head ---------- */
.article-head{padding:16px 0 54px;max-width:820px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--key-soft);border:1px solid rgba(47,217,180,.32);
  color:var(--key);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--key);box-shadow:0 0 10px rgba(47,217,180,.8)}
.article-title{
  font-size:clamp(32px,4.2vw,54px);line-height:1.15;font-weight:700;
  margin:20px 0 18px;letter-spacing:.01em;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;color:var(--txt-3);font-size:14px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}
.article-meta time,.article-meta .num{font-variant-numeric:tabular-nums}

/* ---------- layout ---------- */
.section{padding:72px 0}
.section-tight{padding:48px 0}
.article-wrap{max-width:760px;margin:0 auto;padding:64px 0 8px}

/* ---------- prose ---------- */
.prose{color:var(--txt-2);font-size:16px;line-height:1.9}
.prose > *{max-width:100%}
.prose p{margin-bottom:20px}
.prose h2{
  font-size:clamp(22px,2.2vw,28px);font-weight:650;color:var(--txt-1);
  margin:44px 0 18px;padding-left:14px;border-left:4px solid var(--key);
  line-height:1.35;
}
.prose h3{font-size:19px;font-weight:600;color:var(--txt-1);margin:34px 0 12px}
.prose h4{font-size:17px;font-weight:600;color:var(--txt-1);margin:26px 0 10px}
.prose a{color:var(--key);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.prose a:hover{color:var(--txt-1)}
.prose strong{color:var(--txt-1);font-weight:600}
.prose ul,.prose ol{padding-left:22px;margin-bottom:20px}
.prose ul li::marker{color:var(--key)}
.prose ol li::marker{color:var(--key);font-variant-numeric:tabular-nums}
.prose blockquote{
  margin:26px 0;padding:20px 24px;
  border-left:3px solid var(--key);border-radius:0 14px 14px 0;
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  color:var(--txt-2);font-style:normal;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:14px;margin:24px 0 10px}
.prose figure{margin:26px 0}
.prose figcaption{font-size:13px;color:var(--txt-3);text-align:center;margin-top:8px}
.prose code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:14px;background:var(--ink-700);border:1px solid var(--line);
  padding:2px 7px;border-radius:6px;color:var(--key);
}
.prose pre{
  background:var(--ink-800);border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;overflow-x:auto;margin:24px 0;line-height:1.7;
}
.prose pre code{background:none;border:0;padding:0;color:var(--txt-2)}
.prose table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.prose thead th{
  background:var(--ink-700);color:var(--txt-1);font-weight:600;text-align:left;
  padding:14px 16px;border-bottom:1px solid var(--line-strong);
}
.prose tbody td{padding:13px 16px;border-bottom:1px solid var(--line)}
.prose tbody tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.prose tbody tr:last-child td{border-bottom:0}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- empty state ---------- */
.empty-state{
  text-align:center;padding:56px 28px;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  box-shadow:var(--shadow-card);
}
@supports not (backdrop-filter:blur(16px)){.empty-state{background:var(--ink-700)}}
.empty-icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--key);background:var(--key-soft);
}
.empty-title{color:var(--txt-1);font-size:18px;font-weight:600;margin:0 0 8px}
.empty-desc{color:var(--txt-3);font-size:14px;margin:0 0 22px}

/* ---------- member cta card ---------- */
.member-card{
  margin-top:56px;padding:28px 30px;border-radius:var(--r-card);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(23,33,51,.78),rgba(10,16,24,.6));
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
}
@supports not (backdrop-filter:blur(16px)){.member-card{background:var(--ink-700)}}
.member-card .m-copy{flex:1 1 320px;min-width:0}
.member-card h3{font-size:20px;margin-bottom:8px}
.member-card p{margin:0;font-size:14px;color:var(--txt-3);line-height:1.7}
.member-card .m-act{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.member-card .m-note{font-size:12.5px;color:var(--txt-3);letter-spacing:.02em}

/* ---------- related ---------- */
.related{padding:64px 0 0;border-top:1px solid var(--line);margin-top:72px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.related-head h2{font-size:clamp(20px,2vw,26px)}
.related-head span{font-size:14px;color:var(--txt-3)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:flex;gap:16px;padding:16px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--ink-700);
  box-shadow:var(--shadow-card);color:var(--txt-2);
  transition:border-color .25s ease,transform .25s ease,color .2s ease;
}
.rel-card:hover{border-color:var(--line-strong);transform:translateY(-2px);color:var(--txt-2)}
.rel-thumb{flex:0 0 96px;width:96px;aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--ink-800)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:12px;transition:transform .3s ease-out}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{min-width:0;display:flex;flex-direction:column;gap:6px}
.rel-title{color:var(--txt-1);font-size:16px;font-weight:600;line-height:1.45}
.rel-card:hover .rel-title{color:var(--txt-1)}
.rel-desc{font-size:13px;color:var(--txt-3);line-height:1.6}
.rel-tag{font-size:12px;color:var(--key);letter-spacing:.04em}

/* ---------- back link ---------- */
.back-row{padding:40px 0 0;display:flex;justify-content:center}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;border-top:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(5,8,14,.9),rgba(5,8,14,1)),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(0deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:cover,48px 48px,48px 48px;
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--txt-3);line-height:1.8;margin:0;max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--txt-1);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--txt-2)}
.footer-col a:hover{color:var(--key);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom .sep{color:rgba(255,255,255,.2)}

/* ---------- breakpoints ---------- */
@media (max-width:1280px){
  .container{padding:0 32px}
  .main-nav{gap:26px}
}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .rel-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:grid}
  .header-actions .btn{display:none}
  .crumbs .now{max-width:44%}
  .article-head{padding-bottom:40px}
  .article-wrap{padding-top:48px}
}
@media (max-width:768px){
  :root{--header-h:60px}
  .container{padding:0 22px}
  .section{padding:60px 0}
  .article-title{font-size:clamp(26px,7vw,34px)}
  .rel-grid{grid-template-columns:1fr}
  .member-card{padding:22px;gap:18px}
  .member-card .m-act{align-items:stretch;width:100%}
  .member-card .m-act .btn{width:100%}
  .prose h2{margin-top:36px}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .rel-card{flex-direction:column}
  .rel-thumb{flex:none;width:100%;aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .footer-bottom .sep{display:none}
  .article-meta{gap:10px;font-size:13px}
  .crumbs{font-size:12.5px}
  .crumbs .now{max-width:100%;white-space:normal}
  .btn{padding:12px 18px}
}

/* roulang page: category2 */
:root{
  --ink-900:#05080E;
  --ink-800:#0A1018;
  --ink-700:#101827;
  --ink-600:#172133;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --txt-1:#E9F0FA;
  --txt-2:#A6B4C8;
  --txt-3:#6B7A90;
  --brand:#2F7BF6;
  --brand-deep:#1B5FD0;
  --key:#2FD9B4;
  --key-soft:rgba(47,217,180,.14);
  --vip:#8B7BFF;
  --warn:#FFC26B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-input:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.7);
  --inset-hi:inset 0 1px 0 rgba(255,255,255,.06);
  --container:1200px;
  --pad:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--txt-1);font-weight:650;letter-spacing:.01em;line-height:1.25}
h1{font-size:clamp(32px,4.2vw,54px);line-height:1.15;font-weight:700}
h2{font-size:clamp(24px,2.6vw,36px)}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
.num{font-variant-numeric:tabular-nums}
::selection{background:rgba(47,217,180,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad)}
.section{padding:96px 0;position:relative}
.section--alt{background:var(--ink-800)}
.section--tight{padding:72px 0}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  border-bottom:1px solid var(--line);
  background:rgba(5,8,14,.72);
  transition:height .25s ease,background .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--txt-1)}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  color:var(--key);
  background:linear-gradient(150deg,rgba(47,217,180,.18),rgba(47,123,246,.14));
  border:1px solid var(--line-strong);
  box-shadow:var(--inset-hi);
}
.brand-text{font-size:16px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;letter-spacing:.02em;
  color:var(--txt-2);
  padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--key);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--txt-1);transform:translateY(-1px)}
.nav-link.is-active{color:var(--txt-1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line-strong);
  align-items:center;justify-content:center;
  color:var(--txt-1);
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:currentColor;border-radius:2px}
.nav-toggle span+span{margin-top:5px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#04231C;
  background:linear-gradient(120deg,var(--key),var(--brand));
  box-shadow:0 0 0 1px rgba(47,217,180,.35),0 10px 30px -10px rgba(47,217,180,.55);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,217,180,.5),0 16px 38px -12px rgba(47,217,180,.7)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,217,180,.35),0 6px 18px -10px rgba(47,217,180,.5)}
.btn-ghost{
  color:var(--txt-1);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{background:rgba(47,217,180,.10);border-color:rgba(47,217,180,.4);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-pill{border-radius:999px}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,.faq-q:focus-visible,a:focus-visible{
  outline:2px solid var(--key);outline-offset:2px;border-radius:6px;
}
.btn[disabled],.btn[aria-disabled="true"]{
  filter:saturate(.6);opacity:.55;box-shadow:none;cursor:not-allowed;transform:none;
}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--key);
  background:var(--key-soft);
  border:1px solid rgba(47,217,180,.24);
}
.badge--vip{color:#C3BBFF;background:rgba(139,123,255,.14);border-color:rgba(139,123,255,.3)}
.badge--muted{color:var(--txt-3);background:rgba(255,255,255,.04);border-color:var(--line)}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 88px;
  overflow:hidden;
  background:
    radial-gradient(1200px 420px at 12% -10%,rgba(47,123,246,.10),transparent 60%),
    linear-gradient(180deg,var(--ink-900),var(--ink-800));
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  pointer-events:none;
}
.breadcrumb{
  position:relative;
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--txt-3);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--txt-3);transition:color .2s ease}
.breadcrumb a:hover{color:var(--key)}
.breadcrumb .crt{color:var(--txt-2)}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{margin-bottom:20px}
.hero-lead{font-size:17px;line-height:1.9;color:var(--txt-2);max-width:620px}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  margin-top:30px;padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-meta .meta-item{display:flex;align-items:baseline;gap:8px;font-size:14px;color:var(--txt-3)}
.hero-meta .meta-num{font-size:26px;font-weight:700;color:var(--txt-1);font-variant-numeric:tabular-nums}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card),var(--inset-hi);
  aspect-ratio:4/3;
  background:var(--ink-700);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,14,.15),rgba(5,8,14,.65));
}
.hero-media .media-cap{
  position:absolute;left:20px;right:20px;bottom:18px;z-index:2;
  font-size:13.5px;color:var(--txt-1);letter-spacing:.02em;
}

/* ---------- section head ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  margin-bottom:44px;
}
.section-head .sh-copy{max-width:720px}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--txt-2);max-width:640px}
.section-head .sh-link{
  font-size:14.5px;font-weight:600;color:var(--key);
  border-bottom:1px solid rgba(47,217,180,.4);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.section-head .sh-link:hover{color:var(--txt-1);border-color:var(--txt-1)}

/* ---------- level cards ---------- */
.level-cards{
  display:grid;
  grid-template-columns:1.32fr 1fr .92fr;
  gap:24px;
  align-items:stretch;
}
.level-card{
  position:relative;
  padding:28px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  box-shadow:var(--shadow-card),var(--inset-hi);
  display:flex;flex-direction:column;
  transition:border-color .25s ease,transform .25s ease;
}
@supports not ((backdrop-filter:blur(16px)) or (-webkit-backdrop-filter:blur(16px))){
  .level-card{background:var(--ink-700)}
}
.level-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.level-card--feature{
  border-color:rgba(47,217,180,.45);
  box-shadow:0 0 0 1px rgba(47,217,180,.25),0 24px 70px -28px rgba(47,217,180,.45),var(--inset-hi);
}
.level-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.level-name{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--txt-1);letter-spacing:.03em}
.level-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(47,123,246,.16)}
.level-dot--key{background:var(--key);box-shadow:0 0 0 4px rgba(47,217,180,.16)}
.level-dot--vip{background:var(--vip);box-shadow:0 0 0 4px rgba(139,123,255,.16)}
.level-num{
  font-size:44px;font-weight:700;line-height:1;color:var(--txt-1);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.level-num small{font-size:14px;font-weight:500;color:var(--txt-3);margin-left:8px;letter-spacing:.02em}
.level-desc{margin-top:14px;font-size:14.5px;color:var(--txt-2);line-height:1.8}
.level-points{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:12px}
.level-points li{display:flex;gap:10px;font-size:14.5px;color:var(--txt-2);line-height:1.7}
.level-points li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;
  background:var(--key);opacity:.9;
}
.level-link{
  margin-top:auto;padding-top:22px;
  font-size:14.5px;font-weight:600;color:var(--key);
  display:inline-flex;align-items:center;gap:6px;
  transition:gap .2s ease,color .2s ease;
}
.level-link:hover{gap:10px;color:var(--txt-1)}

/* ---------- matrix ---------- */
.matrix{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:rgba(16,24,39,.5);
  box-shadow:var(--inset-hi);
}
.matrix-head,.matrix-row{
  display:grid;
  grid-template-columns:1.5fr repeat(3,1fr);
  align-items:center;
}
.matrix-head{
  padding:18px 26px;
  font-size:13.5px;font-weight:600;letter-spacing:.05em;
  color:var(--txt-3);
  background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--line);
  text-transform:none;
}
.matrix-head .mh-feature{color:var(--txt-3)}
.matrix-head .mh-col{text-align:center;color:var(--txt-2)}
.matrix-head .mh-col--on{color:var(--key)}
.matrix-row{
  min-height:56px;
  padding:14px 26px;
  border-bottom:1px solid var(--line);
  font-size:14.5px;
  transition:background .2s ease;
}
.matrix-row:nth-child(even){background:rgba(255,255,255,.02)}
.matrix-row:last-child{border-bottom:0}
.matrix-row:hover{background:rgba(47,217,180,.05)}
.matrix-row .mr-feature{color:var(--txt-1);font-weight:500}
.matrix-cell{text-align:center;color:var(--txt-2);font-variant-numeric:tabular-nums}
.mark-yes{color:var(--key);display:inline-flex;align-items:center;justify-content:center}
.mark-no{color:var(--txt-3);display:inline-flex;align-items:center;justify-content:center}

/* ---------- benefits dual list ---------- */
.benefit-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 56px;
}
.benefit-item{
  display:flex;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.benefit-item:nth-last-child(-n+2){border-bottom:0}
.benefit-ico{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  color:var(--key);
  background:var(--key-soft);
  border:1px solid rgba(47,217,180,.2);
}
.benefit-item h3{font-size:16.5px;margin-bottom:6px}
.benefit-item p{font-size:14.5px;color:var(--txt-2);margin:0;line-height:1.8}

/* ---------- stats band ---------- */
.stats-band{
  background:var(--ink-800);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding:64px 0;
}
.stat{padding-right:24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0;padding-right:0}
.stat-num{
  font-size:48px;font-weight:700;line-height:1;color:var(--txt-1);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stat-num em{font-style:normal;font-size:18px;font-weight:600;color:var(--key);margin-left:6px}
.stat-label{margin-top:12px;font-size:14.5px;color:var(--txt-2)}
.stat-note{margin-top:6px;font-size:13px;color:var(--txt-3)}

/* ---------- preview media block ---------- */
.split{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow-card);
  aspect-ratio:16/11;background:var(--ink-700);
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,14,.15),rgba(5,8,14,.65));
}
.split-copy h2{margin-bottom:18px}
.check-list{display:grid;gap:14px;margin-top:8px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--txt-2);line-height:1.8}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:6px;border-radius:50%;
  background:radial-gradient(circle at center,var(--key) 42%,transparent 44%);
  border:1px solid rgba(47,217,180,.4);
}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;
  text-align:left;
  font-size:16px;font-weight:600;color:var(--txt-1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--key)}
.faq-sign{
  flex:0 0 auto;position:relative;width:18px;height:18px;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--key);
  transform:translate(-50%,-50%);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-sign::before{width:14px;height:1.6px}
.faq-sign::after{width:1.6px;height:14px}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a-inner{padding:0 44px 26px 4px;font-size:15px;line-height:1.85;color:var(--txt-2)}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- cta band ---------- */
.cta-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(160deg,rgba(23,33,51,.72),rgba(10,16,24,.55));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
@supports not ((backdrop-filter:blur(16px)) or (-webkit-backdrop-filter:blur(16px))){
  .cta-band{background:var(--ink-700)}
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:52px 0;
}
.cta-copy h2{font-size:clamp(22px,2.3vw,30px);margin-bottom:10px}
.cta-copy p{font-size:14.5px;color:var(--txt-3);margin:0}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-note{font-size:13.5px;color:var(--txt-3);max-width:200px;line-height:1.7}
.cta-visual{
  width:120px;height:88px;border-radius:14px;overflow:hidden;flex:0 0 auto;
  border:1px solid var(--line-strong);
}
.cta-visual img{width:100%;height:100%;object-fit:cover}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:76px 0 30px;
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:220px;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent);
  pointer-events:none;
}
.footer-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--txt-3);line-height:1.85;max-width:300px}
.footer-col h3{
  font-size:14px;font-weight:600;color:var(--txt-1);
  letter-spacing:.06em;margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:var(--txt-3)}
.footer-col a{transition:color .2s ease}
.footer-col a:hover{color:var(--key);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding-top:26px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--txt-3);
}
.footer-bottom .sep{color:var(--line-strong)}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:60px 0 0 0;
  z-index:55;
  display:none;
  flex-direction:column;
  padding:24px 20px 32px;
  background:linear-gradient(160deg,rgba(23,33,51,.92),rgba(10,16,24,.9));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  overflow-y:auto;
}
@supports not ((backdrop-filter:blur(16px)) or (-webkit-backdrop-filter:blur(16px))){
  .mobile-drawer{background:var(--ink-700)}
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer a.md-link{
  font-size:20px;font-weight:500;color:var(--txt-1);
  padding:18px 4px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.md-link.is-active{color:var(--key)}
.mobile-drawer .md-cta{margin-top:26px;width:100%}
.mobile-drawer .md-brand{
  margin-top:auto;padding-top:28px;
  font-size:13.5px;color:var(--txt-3);
}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  :root{--container:1140px;--pad:32px}
  .hero-grid{gap:44px}
  .split{gap:44px}
  .benefit-grid{gap:0 40px}
}
@media (max-width:1024px){
  .section{padding:80px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{aspect-ratio:16/9;max-height:340px}
  .level-cards{grid-template-columns:1fr 1fr;gap:20px}
  .level-card--feature{grid-column:1 / -1}
  .split{grid-template-columns:1fr;gap:32px}
  .stats{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .stat:nth-child(2){border-right:0}
  .stat{padding-right:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 32px}
  .matrix-head,.matrix-row{grid-template-columns:1.3fr repeat(3,1fr)}
}
@media (max-width:900px){
  .main-nav,.nav-actions .btn{display:none}
  .nav-toggle{display:flex}
}
@media (max-width:768px){
  :root{--pad:20px}
  .section{padding:64px 0}
  .page-hero{padding:118px 0 62px}
  .hero-lead{font-size:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .level-cards{grid-template-columns:1fr}
  .benefit-grid{grid-template-columns:1fr;gap:0}
  .benefit-item:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .benefit-item:last-child{border-bottom:0}
  .matrix{border-radius:14px}
  .matrix-head{display:none}
  .matrix-row{
    grid-template-columns:1fr;
    gap:10px;
    padding:20px 18px;
    align-items:flex-start;
  }
  .matrix-cell{
    display:flex;justify-content:space-between;align-items:center;
    text-align:right;font-size:13.5px;color:var(--txt-2);
  }
  .matrix-cell::before{
    content:attr(data-col);
    font-size:13px;color:var(--txt-3);font-weight:500;
  }
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding:44px 0}
  .cta-visual{width:100%;height:140px}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:40px}
  .stats{padding:52px 0}
  .stat-num{font-size:40px}
}
@media (max-width:520px){
  h1{font-size:30px}
  .brand-text{font-size:15px}
  .btn{width:100%}
  .hero-actions{width:100%}
  .cta-actions{width:100%}
  .hero-meta{gap:16px}
  .hero-meta .meta-num{font-size:22px}
  .faq-q{font-size:15.5px;padding:20px 2px}
  .faq-a-inner{padding:0 20px 22px 2px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;padding-bottom:18px;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0;padding-bottom:0}
}