/* roulang page: index */
:root{
  --ink:#0b1a2f;
  --ink-2:#1c2f4c;
  --brand:#1553c7;
  --brand-dark:#0f3f9e;
  --accent:#0fa896;
  --accent-dark:#0a8074;
  --gold:#c9922f;
  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#eef3fb;
  --muted:#5f7086;
  --line:#e2e8f2;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(11,26,47,.06),0 4px 14px rgba(11,26,47,.05);
  --shadow:0 12px 32px rgba(11,26,47,.09);
  --shadow-lg:0 26px 60px rgba(11,26,47,.16);
  --max:1180px;
}
*{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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;}
:focus-visible{outline:3px solid rgba(21,83,199,.4);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand) 0%,#0d8ea0 100%);
  color:#fff;display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(21,83,199,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.22;min-width:0;}
.brand-text strong{font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);white-space:nowrap;}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav a{
  padding:9px 15px;border-radius:999px;font-size:15px;color:#3a4c66;
  transition:background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.nav a:hover{background:var(--surface-2);color:var(--brand-dark);}
.nav a.active{background:#e7effd;color:var(--brand-dark);font-weight:600;}
.nav a.nav-dl{display:none;}
.header-cta{
  flex:0 0 auto;padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;
  background:linear-gradient(135deg,var(--brand) 0%,#0d6fc4 100%);color:#fff;
  box-shadow:0 8px 20px rgba(21,83,199,.26);
  transition:transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(21,83,199,.34);}
.header-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;align-items:center;gap:6px;margin-left:auto;
  padding:9px 14px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:14px;cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:#c6d5ea;background:#f7faff;}

/* ---------- Hero ---------- */
.hero{position:relative;background:#fff;}
.hero-cover{
  position:relative;height:230px;overflow:hidden;
  background:linear-gradient(115deg,#08182c 0%,#12356f 46%,#0a6f78 100%);
}
.hero-cover::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:46px 46px;
}
.hero-cover::after{
  content:"";position:absolute;right:-80px;top:-110px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.42) 0%,rgba(15,168,150,0) 68%);
}
.cover-inner{position:relative;z-index:2;height:100%;display:flex;align-items:flex-start;padding-top:40px;}
.cover-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;color:#d7e6ff;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  letter-spacing:.02em;
}
.cover-tag .pulse{width:7px;height:7px;border-radius:50%;background:#38e0c4;box-shadow:0 0 0 4px rgba(56,224,196,.22);}
.hero-wrap{
  position:relative;z-index:3;
  display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:26px;
  margin-top:-118px;padding-bottom:60px;
}
.profile-card{
  background:var(--surface);border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow);
  padding:26px 28px 30px;
}
.profile-head{display:flex;align-items:flex-start;gap:18px;}
.avatar{
  width:86px;height:86px;flex:0 0 86px;border-radius:26px;
  background:linear-gradient(140deg,var(--brand) 0%,#0d8ea0 100%);
  color:#fff;display:grid;place-items:center;font-size:34px;font-weight:700;
  box-shadow:0 14px 30px rgba(21,83,199,.28);
  letter-spacing:.02em;
}
.profile-id{min-width:0;flex:1 1 auto;}
.profile-id h1{
  font-size:clamp(21px,2.4vw,27px);line-height:1.45;font-weight:700;
  color:var(--ink);letter-spacing:.005em;
}
.profile-sub{margin-top:8px;font-size:14px;color:var(--muted);}
.profile-cta{
  flex:0 0 auto;
}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;
  background:#eef4ff;color:var(--brand-dark);border:1px solid #d9e5fb;
}
.badge--green{background:#e8f7f3;color:var(--accent-dark);border-color:#cdede6;}
.badge--gold{background:#fbf3e3;color:#9a6d16;border-color:#f0e0bd;}
.hero-desc{margin-top:18px;font-size:15.5px;color:#3d4f68;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#0c7bc0 100%);color:#fff;box-shadow:0 10px 24px rgba(21,83,199,.26);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(21,83,199,.34);}
.btn-ghost{background:#fff;border-color:#d5dfee;color:var(--ink-2);}
.btn-ghost:hover{border-color:#b9cbe6;background:#f7faff;transform:translateY(-2px);}
.hero-panel{
  background:linear-gradient(160deg,#0d2144 0%,#123a6f 60%,#0b5f6b 100%);
  border-radius:var(--radius-lg);padding:26px 24px;color:#e6eefc;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.hero-panel::after{
  content:"";position:absolute;right:-60px;bottom:-70px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.4),transparent 70%);
}
.panel-title{font-size:15px;font-weight:600;letter-spacing:.04em;color:#a9c4ec;position:relative;z-index:2;}
.panel-list{margin-top:16px;display:grid;gap:12px;position:relative;z-index:2;}
.panel-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
}
.panel-item b{font-size:14px;font-weight:600;color:#fff;display:block;}
.panel-item span{font-size:12.5px;color:#b9cdea;line-height:1.65;display:block;margin-top:2px;}
.panel-dot{
  width:9px;height:9px;flex:0 0 9px;border-radius:50%;margin-top:7px;
  background:#38e0c4;box-shadow:0 0 0 4px rgba(56,224,196,.18);
}

/* ---------- Sections ---------- */
.section{padding:74px 0;}
.section--alt{background:var(--surface);}
.section--dark{background:linear-gradient(150deg,#0b1a2f 0%,#123566 100%);color:#e8eefb;}
.section-head{max-width:820px;}
.section-head.center{margin:0 auto;text-align:center;}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--brand);
  font-weight:600;text-transform:uppercase;margin-bottom:12px;
}
.section--dark .eyebrow{color:#5fd8c6;}
.section-head h2{
  font-size:clamp(22px,2.6vw,31px);line-height:1.42;font-weight:700;letter-spacing:.005em;
}
.lead{margin-top:14px;font-size:15.5px;color:#46586f;line-height:1.92;}
.section--dark .lead{color:#b7c9e4;}
.head-split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:36px;align-items:end;}

/* ---------- Grids & cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.mt-32{margin-top:34px;}
.mt-24{margin-top:26px;}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcf0;}
.card-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e8f0fe,#e3f7f4);color:var(--brand-dark);
  font-size:18px;font-weight:700;margin-bottom:16px;
}
.card h3{font-size:17px;font-weight:700;line-height:1.5;}
.card p{margin-top:9px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.section--dark .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);box-shadow:none;}
.section--dark .card h3{color:#fff;}
.section--dark .card p{color:#aec3e1;}
.section--dark .card-icon{background:rgba(255,255,255,.12);color:#6ee0cb;}

/* ---------- Checklist ---------- */
.check-list{display:grid;gap:14px;margin-top:34px;}
.check-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:border-color .2s ease,transform .2s ease;
}
.check-item:hover{border-color:#cfdcf0;transform:translateX(3px);}
.check-index{
  flex:0 0 38px;width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#0d8ea0);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:15px;
}
.check-item b{display:block;font-size:15.5px;font-weight:700;}
.check-item p{font-size:14.5px;color:var(--muted);margin-top:4px;line-height:1.8;}

/* ---------- Badge cards ---------- */
.badge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:34px;}
.badge-card{
  border-radius:var(--radius);padding:22px 22px;min-width:0;
  background:linear-gradient(160deg,#f8fbff,#eef5fd);
  border:1px solid #dde8f7;
  transition:transform .2s ease,box-shadow .2s ease;
}
.badge-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.badge-card b{display:flex;align-items:center;gap:9px;font-size:15.5px;color:var(--ink);}
.badge-card b::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 8px;
}
.badge-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.78;}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:34px;}
.compare-col{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);min-width:0;
}
.compare-col--no{background:#fff8f6;border-color:#f6ded6;}
.compare-col h3{font-size:16.5px;font-weight:700;display:flex;align-items:center;gap:9px;}
.compare-col h3 span{
  width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  font-size:13px;color:#fff;background:var(--accent);
}
.compare-col--no h3 span{background:#d3694a;}
.list-tick li,.list-cross li{
  position:relative;padding-left:26px;margin-top:12px;font-size:14.5px;color:#3f5169;line-height:1.8;
}
.list-tick li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:7px;
  border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}
.list-cross li::before{
  content:"";position:absolute;left:1px;top:12px;width:12px;height:2px;background:#d3694a;
}

/* ---------- Download ---------- */
.dl-wrap{
  background:linear-gradient(150deg,#0b1a2f 0%,#123566 55%,#0a5f6c 100%);
  border-radius:var(--radius-lg);padding:44px 40px;color:#e9f0fb;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.dl-wrap::after{
  content:"";position:absolute;right:-90px;top:-100px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.38),transparent 70%);
}
.dl-wrap h2{font-size:clamp(22px,2.6vw,30px);line-height:1.45;position:relative;z-index:2;}
.dl-wrap .dl-lead{margin-top:12px;color:#b7c9e4;font-size:15px;line-height:1.9;max-width:780px;position:relative;z-index:2;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:30px;position:relative;z-index:2;}
.dl-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:22px 20px;min-width:0;
  display:flex;flex-direction:column;gap:12px;
  transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
}
.dl-card:hover{background:rgba(255,255,255,.13);transform:translateY(-3px);border-color:rgba(255,255,255,.28);}
.dl-head{display:flex;align-items:center;gap:11px;}
.dl-icon{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:0 0 38px;
  background:rgba(255,255,255,.14);color:#7be6d3;font-size:15px;font-weight:700;
}
.dl-head b{font-size:15.5px;color:#fff;}
.dl-meta{font-size:13px;color:#a9c0de;line-height:1.7;}
.dl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:10px;font-size:14.5px;font-weight:600;
  background:#fff;color:var(--brand-dark);
  transition:background-color .18s ease,transform .18s ease,color .18s ease;
}
.dl-btn:hover{background:#d9f2ec;color:#0a6f60;transform:translateY(-2px);}
.dl-note{margin-top:22px;font-size:13.5px;color:#9db4d4;position:relative;z-index:2;line-height:1.8;}

/* ---------- Steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:34px;}
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;font-size:14px;font-weight:700;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));
  margin-bottom:14px;
}
.step-card h3{font-size:16.5px;font-weight:700;}
.step-card p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ---------- Workbench ---------- */
.workbench{
  margin-top:34px;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid #d9e4f3;background:#fff;box-shadow:var(--shadow);
}
.wb-bar{
  display:flex;align-items:center;gap:8px;padding:13px 18px;
  background:#f3f7fd;border-bottom:1px solid #e1eaf7;
}
.wb-bar .dot{width:10px;height:10px;border-radius:50%;background:#c9d8ec;flex:0 0 10px;}
.wb-bar .dot:nth-child(1){background:#e5a1a1;}
.wb-bar .dot:nth-child(2){background:#e8cf9a;}
.wb-bar .dot:nth-child(3){background:#9fd3bd;}
.wb-title{margin-left:10px;font-size:13px;color:#6a7d97;letter-spacing:.02em;}
.wb-body{display:grid;grid-template-columns:190px minmax(0,1fr) 190px;gap:0;}
.wb-side{padding:22px 18px;background:#fafcff;border-right:1px solid #e8eefa;min-width:0;}
.wb-side--right{border-right:0;border-left:1px solid #e8eefa;}
.wb-label{font-size:12.5px;letter-spacing:.08em;color:#8b9cb3;margin-bottom:12px;}
.wb-side li{
  font-size:14px;color:#3f5169;padding:9px 12px;border-radius:9px;margin-bottom:6px;
  transition:background-color .18s ease;
}
.wb-side li.on{background:#e7effd;color:var(--brand-dark);font-weight:600;}
.wb-main{padding:22px 22px 26px;min-width:0;}
.wb-tabs{display:flex;gap:8px;flex-wrap:wrap;}
.wb-tabs span{
  font-size:13px;padding:5px 14px;border-radius:999px;background:#f0f4fa;color:#5f7086;
  border:1px solid #e3ebf6;
}
.wb-tabs span.on{background:#e7effd;color:var(--brand-dark);border-color:#cfdffa;font-weight:600;}
.wb-chart{
  margin-top:16px;border-radius:14px;background:linear-gradient(180deg,#f8fbff,#eef5fd);
  border:1px solid #e2ebf7;padding:16px 14px 6px;
}
.wb-chart svg{width:100%;height:auto;display:block;}
.wb-note{margin-top:14px;font-size:13.5px;color:#7b8ca4;line-height:1.75;}

/* ---------- News ---------- */
.news-wrap{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:26px;margin-top:34px;}
.news-list{display:grid;gap:14px;min-width:0;}
.news-item{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfdcf0;}
.news-item-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.tag{
  display:inline-block;padding:3px 11px;border-radius:999px;font-size:12.5px;
  background:#eef4ff;color:var(--brand-dark);border:1px solid #dbe6fb;
}
.news-date{font-size:12.5px;color:#93a3b8;}
.news-item h3{margin-top:9px;font-size:16.5px;font-weight:700;line-height:1.55;}
.news-item p{margin-top:7px;font-size:14px;color:var(--muted);line-height:1.78;}
.news-aside{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);align-self:start;min-width:0;
}
.news-aside h3{font-size:16px;font-weight:700;}
.aside-item{display:block;padding:13px 0;border-bottom:1px dashed #e6ecf5;min-width:0;}
.aside-item:last-child{border-bottom:0;padding-bottom:0;}
.aside-item b{display:block;font-size:14.5px;font-weight:600;line-height:1.6;color:var(--ink-2);transition:color .18s ease;}
.aside-item:hover b{color:var(--brand-dark);}
.aside-item span{display:block;font-size:12.5px;color:#93a3b8;margin-top:4px;}
.more-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:20px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
  padding:9px 18px;border-radius:999px;border:1px solid #cfdffa;background:#f5f9ff;
  transition:background-color .18s ease,border-color .18s ease;
}
.more-link:hover{background:#e7effd;border-color:#b9cff6;}
.empty-tip{
  padding:26px 24px;border-radius:var(--radius);background:#f7faff;
  border:1px dashed #cfdcf0;color:#6b7c92;font-size:14.5px;
}

/* ---------- Entry card ---------- */
.entry-card{
  display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 30px;box-shadow:var(--shadow-sm);margin-top:32px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.entry-card:hover{box-shadow:var(--shadow);border-color:#cfdcf0;}
.entry-badge{
  width:56px;height:56px;flex:0 0 56px;border-radius:16px;
  background:linear-gradient(135deg,#e8f0fe,#e2f7f3);
  display:grid;place-items:center;font-size:22px;font-weight:700;color:var(--brand-dark);
}
.entry-body{flex:1 1 320px;min-width:0;}
.entry-body h3{font-size:18px;font-weight:700;}
.entry-body p{margin-top:7px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.entry-link{
  flex:0 0 auto;padding:11px 24px;border-radius:999px;font-size:14.5px;font-weight:600;
  background:linear-gradient(135deg,var(--brand),#0c7bc0);color:#fff;
  box-shadow:0 8px 20px rgba(21,83,199,.24);
  transition:transform .18s ease,box-shadow .18s ease;
}
.entry-link:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(21,83,199,.32);}

/* ---------- Notes ---------- */
.note-list{display:grid;gap:16px;margin-top:32px;}
.note-item{
  display:flex;gap:16px;align-items:flex-start;padding:22px 24px;min-width:0;
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
}
.note-item b{display:block;font-size:15.5px;font-weight:700;}
.note-item p{margin-top:5px;font-size:14.5px;color:var(--muted);line-height:1.82;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;margin-top:34px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#c9dbf5;box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;background:#eef4ff;color:var(--brand-dark);
  font-size:17px;font-weight:600;transition:transform .2s ease,background-color .2s ease;
}
.faq-item[open] summary::after{content:"−";background:#e2f7f3;color:var(--accent-dark);}
.faq-a{margin-top:12px;font-size:14.5px;color:#4a5b72;line-height:1.9;}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:8px;padding:48px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#0f3f9e 0%,#0b6fb0 60%,#0a8b7f 100%);
  color:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;gap:26px;justify-content:space-between;
}
.cta-band::after{
  content:"";position:absolute;left:-70px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%);
}
.cta-text{position:relative;z-index:2;flex:1 1 380px;min-width:0;}
.cta-text h2{font-size:clamp(21px,2.4vw,28px);line-height:1.45;}
.cta-text p{margin-top:10px;font-size:14.5px;color:#d5e6ff;line-height:1.85;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}
.btn-light{background:#fff;color:var(--brand-dark);box-shadow:0 10px 24px rgba(4,26,61,.24);}
.btn-light:hover{background:#e6f6f2;color:#0a6f60;transform:translateY(-2px);}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}

/* ---------- Footer ---------- */
.site-footer{background:#0a1526;color:#aebfd6;padding:60px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr) minmax(0,.8fr);gap:38px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8ba0bd;}
.footer-brand p{font-size:14px;line-height:1.85;color:#93a7c2;max-width:430px;}
.footer-col h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:14px;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#98abc6;transition:color .18s ease;}
.footer-col a:hover{color:#5fd8c6;}
.friend-links{margin-top:38px;padding-top:26px;border-top:1px solid rgba(255,255,255,.09);}
.friend-links h3{font-size:14.5px;color:#fff;font-weight:600;margin-bottom:14px;}
.friend-link-list{display:flex;flex-wrap:wrap;gap:10px 20px;}
.friend-link-list a{
  font-size:13.5px;color:#8fa4c0;padding:4px 0;
  transition:color .18s ease;
}
.friend-link-list a:hover{color:#5fd8c6;}
.footer-bottom{
  margin-top:32px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;
  font-size:13px;color:#7d90ab;
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-wrap{grid-template-columns:minmax(0,1fr);}
  .hero-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:start;}
  .panel-title{grid-column:1/-1;}
  .panel-list{grid-column:1/-1;grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .badge-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-wrap{grid-template-columns:minmax(0,1fr);}
  .wb-body{grid-template-columns:170px minmax(0,1fr);}
  .wb-side--right{border-left:0;border-top:1px solid #e8eefa;grid-column:1/-1;border-right:0;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .nav{
    position:absolute;left:0;right:0;top:72px;display:none;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    padding:12px 24px 20px;gap:4px;margin-left:0;
  }
  .nav.open{display:flex;}
  .nav a{padding:12px 14px;border-radius:10px;}
  .nav a.nav-dl{display:block;background:#e7effd;color:var(--brand-dark);font-weight:600;margin-top:6px;}
  .hero-cover{height:180px;}
  .cover-inner{padding-top:26px;}
  .hero-wrap{margin-top:-78px;}
  .profile-card{padding:22px 20px 26px;}
  .profile-head{flex-wrap:wrap;}
  .avatar{width:68px;height:68px;flex-basis:68px;border-radius:20px;font-size:27px;}
  .profile-cta{width:100%;}
  .head-split{grid-template-columns:minmax(0,1fr);gap:18px;}
  .cta-band{padding:36px 26px;}
  .dl-wrap{padding:32px 24px;}
}
@media (max-width:640px){
  .section{padding:52px 0;}
  .grid-2,.grid-3,.grid-4,.badge-grid,.step-grid,.dl-grid,.compare{grid-template-columns:minmax(0,1fr);}
  .hero-panel{grid-template-columns:minmax(0,1fr);}
  .panel-list{grid-template-columns:minmax(0,1fr);}
  .wb-body{grid-template-columns:minmax(0,1fr);}
  .wb-side{border-right:0;border-bottom:1px solid #e8eefa;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .entry-card{padding:24px 22px;}
  .entry-link{width:100%;text-align:center;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .container{padding:0 18px;}
  .header-inner{min-height:64px;}
  .nav{top:64px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:11px;}
}
@media (max-width:400px){
  .brand-text em{display:none;}
  .avatar{width:60px;height:60px;flex-basis:60px;font-size:24px;border-radius:18px;}
}

/* roulang page: article */
:root{
  --ink:#0b1a2f;
  --ink-2:#1c2f4c;
  --brand:#1553c7;
  --brand-dark:#0f3f9e;
  --accent:#0fa896;
  --accent-dark:#0a8074;
  --gold:#c9922f;
  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#eef3fb;
  --muted:#5f7086;
  --line:#e2e8f2;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(11,26,47,.06),0 4px 14px rgba(11,26,47,.05);
  --shadow:0 12px 32px rgba(11,26,47,.09);
  --shadow-lg:0 26px 60px rgba(11,26,47,.16);
  --max:1180px;
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{position:relative;display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand) 0%,#0d8ea0 100%);
  color:#fff;display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(21,83,199,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.22;min-width:0;}
.brand-text strong{font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);white-space:nowrap;}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav a{
  padding:9px 15px;border-radius:999px;font-size:15px;color:#3a4c66;
  transition:background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.nav a:hover{background:var(--surface-2);color:var(--brand-dark);}
.nav a.active{background:#e7effd;color:var(--brand-dark);font-weight:600;}
.nav a.nav-dl{display:none;}
.header-cta{
  flex:0 0 auto;padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;
  background:linear-gradient(135deg,var(--brand) 0%,#0d6fc4 100%);color:#fff;
  box-shadow:0 8px 20px rgba(21,83,199,.26);
  transition:transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(21,83,199,.34);}
.header-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;align-items:center;gap:6px;margin-left:auto;
  padding:9px 14px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:14px;cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:#c6d5ea;background:#f7faff;}
/* ---------- Article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(118deg,#08182c 0%,#12356f 52%,#0a6f78 100%);
  color:#eaf2ff;padding:38px 0 42px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
.article-hero::after{
  content:"";position:absolute;right:-90px;top:-120px;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.42) 0%,rgba(15,168,150,0) 70%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#a8c0e2;}
.breadcrumb a{color:#cfe0f8;transition:color .18s ease;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:#6f8ab3;}
.article-title{
  margin-top:14px;font-size:31px;line-height:1.42;font-weight:700;color:#fff;
  letter-spacing:.01em;max-width:900px;overflow-wrap:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px;}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#dee9fb;
}
.meta-chip--green{background:rgba(15,168,150,.24);border-color:rgba(56,224,196,.36);color:#c6f7ee;}
/* ---------- Layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 322px;gap:28px;
  margin-top:34px;margin-bottom:10px;
}
.article-main{
  min-width:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:32px 36px 36px;
}
.article-main .lead-note{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 18px;border-radius:var(--radius-sm);
  background:var(--surface-2);border:1px solid #dbe6f7;color:#31465f;
  font-size:14.5px;line-height:1.8;margin-bottom:26px;
}
.lead-note .dot{width:9px;height:9px;flex:0 0 9px;margin-top:9px;border-radius:50%;background:var(--accent);}
/* ---------- Article content ---------- */
.article-content{
  font-size:16.5px;line-height:1.95;color:#26374e;
  min-width:0;overflow-x:auto;overflow-wrap:break-word;
}
.article-content > *:first-child{margin-top:0;}
.article-content h2{
  font-size:22px;line-height:1.5;margin:34px 0 14px;
  padding-left:14px;border-left:4px solid var(--brand);color:var(--ink);
}
.article-content h3{font-size:18px;line-height:1.55;margin:26px 0 10px;color:var(--ink);}
.article-content h4{font-size:16.5px;margin:20px 0 8px;color:var(--ink-2);}
.article-content p{margin:0 0 16px;}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:24px;}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li{margin-bottom:8px;}
.article-content blockquote{
  margin:20px 0;padding:14px 20px;background:var(--surface-2);
  border-left:4px solid var(--accent);border-radius:0 12px 12px 0;color:#31465f;
}
.article-content img{
  border-radius:12px;margin:20px auto;max-width:100%;height:auto;
}
.article-content a{color:var(--brand-dark);border-bottom:1px solid #c3d8f7;transition:color .18s ease,border-color .18s ease;}
.article-content a:hover{color:#0b3f8f;border-color:#8fb6ea;}
.article-content table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
.article-content th{background:var(--surface-2);font-weight:600;color:var(--ink);}
.article-content code{background:#eef3fb;padding:2px 6px;border-radius:6px;font-size:14px;color:#1c4a8a;}
.article-content pre{background:#0b1a2f;color:#dbe7f8;padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:14px;}
.article-content hr{border:none;border-top:1px solid var(--line);margin:26px 0;}
.article-empty{
  padding:40px 20px;text-align:center;
}
.article-empty .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  display:grid;place-items:center;font-size:26px;color:#fff;
  background:linear-gradient(135deg,var(--brand),#0d8ea0);
  box-shadow:0 12px 26px rgba(21,83,199,.24);
}
.article-empty h2{font-size:20px;margin-bottom:10px;}
.article-empty p{color:var(--muted);font-size:15px;margin-bottom:22px;}
/* ---------- Sidebar ---------- */
.article-side{min-width:0;}
.side-sticky{position:sticky;top:92px;display:grid;gap:18px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 20px 22px;box-shadow:var(--shadow-sm);
}
.side-card h2,.side-card h3{
  font-size:15px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card h2::before,.side-card h3::before{
  content:"";width:4px;height:15px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--accent));
}
.side-desc{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:16px;}
.side-dl{display:grid;gap:10px;}
.side-dl-btn{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px;border-radius:12px;font-size:14.5px;font-weight:600;
  background:var(--surface-2);color:var(--ink-2);border:1px solid #dbe6f7;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease;
}
.side-dl-btn span.file{font-size:12px;font-weight:400;color:var(--muted);}
.side-dl-btn:hover{transform:translateY(-2px);background:#fff;border-color:#bcd2ee;box-shadow:var(--shadow-sm);}
.side-dl-btn--main{
  background:linear-gradient(135deg,var(--brand),#0c7bc0);color:#fff;border-color:transparent;
  box-shadow:0 10px 22px rgba(21,83,199,.24);
}
.side-dl-btn--main span.file{color:#d5e6ff;}
.side-dl-btn--main:hover{background:linear-gradient(135deg,var(--brand-dark),#0b6aab);border-color:transparent;}
.side-list{display:grid;gap:10px;}
.side-list li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:14px;color:#31465f;line-height:1.75;
}
.side-list li i{
  flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;
}
/* ---------- Sections ---------- */
.section{padding:62px 0;}
.section--tight{padding:44px 0;}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent-dark);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:27px;line-height:1.45;letter-spacing:.01em;}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--muted);line-height:1.9;}
/* ---------- Notice strip ---------- */
.notice-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
}
.notice-item{
  display:flex;gap:14px;align-items:flex-start;min-width:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.notice-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cddcf1;}
.notice-ico{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  font-size:17px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),#0d8ea0);
}
.notice-item b{display:block;font-size:15.5px;margin-bottom:5px;}
.notice-item p{font-size:14px;color:var(--muted);line-height:1.8;}
/* ---------- Features ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.feature-card{
  min-width:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cddcf1;}
.feature-card .fc-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand-dark);
  background:#e7effd;border-radius:999px;padding:3px 11px;margin-bottom:14px;
}
.feature-card h3{font-size:17px;margin-bottom:8px;}
.feature-card p{font-size:14.5px;color:var(--muted);line-height:1.85;}
/* ---------- Download ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.dl-card{
  min-width:0;display:flex;flex-direction:column;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c4d7ef;}
.dl-card h3{font-size:18px;}
.dl-card p{font-size:14.5px;color:var(--muted);line-height:1.85;}
.dl-card .btn{margin-top:auto;width:100%;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#0c7bc0 100%);color:#fff;box-shadow:0 10px 24px rgba(21,83,199,.26);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(21,83,199,.34);}
.btn-ghost{background:#fff;border-color:#d5dfee;color:var(--ink-2);}
.btn-ghost:hover{border-color:#b9cbe6;background:#f7faff;transform:translateY(-2px);}
/* ---------- Channel ---------- */
.channel-box{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:linear-gradient(120deg,#0d2144 0%,#123a6f 62%,#0b5f6b 100%);
  border-radius:var(--radius-lg);padding:32px 34px;color:#e6eefc;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.channel-box::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.4),transparent 70%);
}
.channel-box .cb-text{position:relative;z-index:2;max-width:640px;}
.channel-box h2{font-size:22px;color:#fff;margin-bottom:10px;}
.channel-box p{font-size:14.5px;color:#b8cdee;line-height:1.85;}
.channel-box .cb-link{
  position:relative;z-index:2;flex:0 0 auto;
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  background:#fff;color:var(--brand-dark);
  transition:transform .18s ease,box-shadow .18s ease;
}
.channel-box .cb-link:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.24);}
/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.faq-item{
  min-width:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:6px 22px;box-shadow:var(--shadow-sm);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:#c8dbf3;box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 0;font-size:16px;font-weight:600;
  color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;font-size:16px;font-weight:400;
  background:#e7effd;color:var(--brand-dark);transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-body{padding:0 0 18px;font-size:14.5px;color:var(--muted);line-height:1.9;}
/* ---------- CTA bar ---------- */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 32px;box-shadow:var(--shadow-sm);
}
.cta-bar h2{font-size:21px;margin-bottom:8px;}
.cta-bar p{font-size:14.5px;color:var(--muted);line-height:1.85;max-width:640px;}
.cta-bar .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
/* ---------- Footer ---------- */
.site-footer{
  background:#0b1a2f;color:#b9c9de;margin-top:64px;padding:52px 0 24px;
}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text em{color:#8fa8c8;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:34px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:#93a9c6;max-width:460px;}
.footer-col h3{font-size:15px;color:#e6eefc;margin-bottom:14px;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:14px;color:#a3b8d4;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.friend-links{margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);}
.friend-links h3{font-size:14px;color:#c8d8ee;margin-bottom:12px;}
.friend-link-list{display:flex;flex-wrap:wrap;gap:8px 10px;}
.friend-link-list a{
  display:inline-block;padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);color:#b6c9e4;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.friend-link-list a:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);}
.footer-bottom{
  margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8199b8;
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .side-sticky{position:static;}
  .article-side{order:2;}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .notice-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex;}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);padding:12px 18px;margin-left:0;
  }
  .nav.open{display:flex;}
  .nav a{padding:11px 14px;border-radius:10px;font-size:15px;}
  .nav a.nav-dl{display:block;}
  .header-cta{display:none;}
  .article-title{font-size:25px;}
  .article-main{padding:24px 22px 28px;}
  .dl-grid{grid-template-columns:repeat(1,minmax(0,1fr));}
  .faq-grid{grid-template-columns:repeat(1,minmax(0,1fr));}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:23px;}
  .notice-strip{grid-template-columns:repeat(1,minmax(0,1fr));}
  .feature-grid{grid-template-columns:repeat(1,minmax(0,1fr));}
  .article-hero{padding:30px 0 34px;}
  .footer-grid{grid-template-columns:1fr;}
  .channel-box{padding:26px 22px;}
  .cta-bar{padding:24px 22px;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .article-title{font-size:21px;line-height:1.5;}
  .article-content{font-size:15.5px;}
  .article-content h2{font-size:19px;}
  .article-content h3{font-size:17px;}
  .brand-text em{display:none;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .channel-box .cb-link{width:100%;justify-content:center;}
}

/* roulang page: category1 */
:root{
  --ink:#0b1a2f;
  --ink-2:#1c2f4c;
  --brand:#1553c7;
  --brand-dark:#0f3f9e;
  --accent:#0fa896;
  --accent-dark:#0a8074;
  --gold:#c9922f;
  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#eef3fb;
  --muted:#5f7086;
  --line:#e2e8f2;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(11,26,47,.06),0 4px 14px rgba(11,26,47,.05);
  --shadow:0 12px 32px rgba(11,26,47,.09);
  --shadow-lg:0 26px 60px rgba(11,26,47,.16);
  --max:1180px;
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;position:relative;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand) 0%,#0d8ea0 100%);
  color:#fff;display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(21,83,199,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.22;min-width:0;}
.brand-text strong{font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);white-space:nowrap;}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav a{
  padding:9px 15px;border-radius:999px;font-size:15px;color:#3a4c66;
  transition:background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.nav a:hover{background:var(--surface-2);color:var(--brand-dark);}
.nav a.active{background:#e7effd;color:var(--brand-dark);font-weight:600;}
.header-cta{
  flex:0 0 auto;padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;
  background:linear-gradient(135deg,var(--brand) 0%,#0d6fc4 100%);color:#fff;
  box-shadow:0 8px 20px rgba(21,83,199,.26);
  transition:transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(21,83,199,.34);}
.header-cta:active{transform:translateY(0);}
.header-cta:focus-visible,.nav a:focus-visible,.nav-toggle:focus-visible,.btn:focus-visible{
  outline:2px solid var(--brand);outline-offset:3px;
}
.nav-toggle{
  display:none;align-items:center;gap:6px;margin-left:auto;
  padding:9px 14px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:14px;cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:#c6d5ea;background:#f7faff;}
/* ---------- Buttons & badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#0c7bc0 100%);color:#fff;box-shadow:0 10px 24px rgba(21,83,199,.26);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(21,83,199,.34);}
.btn-ghost{background:#fff;border-color:#d5dfee;color:var(--ink-2);}
.btn-ghost:hover{border-color:#b9cbe6;background:#f7faff;transform:translateY(-2px);}
.btn-accent{background:linear-gradient(135deg,var(--accent) 0%,#0c8f96 100%);color:#fff;box-shadow:0 10px 24px rgba(15,168,150,.24);}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,168,150,.32);}
.btn:active{transform:translateY(0);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;
  background:#eef4ff;color:var(--brand-dark);border:1px solid #d9e5fb;
}
.badge--green{background:#e8f7f3;color:var(--accent-dark);border-color:#cdede6;}
.badge--gold{background:#fbf3e3;color:#9a6d16;border-color:#f0e0bd;}
/* ---------- Page hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#ffffff 0%,#eaf1fb 100%);
  border-bottom:1px solid var(--line);
  padding:34px 0 58px;
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(21,83,199,.12),rgba(21,83,199,0) 68%);
  pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.crumb a{color:var(--brand-dark);}
.crumb a:hover{text-decoration:underline;}
.crumb span.sep{color:#b9c6d8;}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) 366px;gap:44px;align-items:start;
}
.hero-copy h1{
  font-size:clamp(27px,3.3vw,39px);
  letter-spacing:-.01em;
  margin:16px 0 0;
  color:var(--ink);
}
.hero-lead{margin-top:18px;font-size:16px;color:#3d4f68;line-height:1.9;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.quick-card{
  background:linear-gradient(160deg,#0d2144 0%,#123a6f 58%,#0b5f6b 100%);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  color:#e6eefc;
  box-shadow:var(--shadow-lg);
  position:relative;
  overflow:hidden;
}
.quick-card::after{
  content:"";position:absolute;right:-70px;bottom:-80px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.42),transparent 70%);
}
.quick-title{font-size:15px;font-weight:600;letter-spacing:.04em;color:#a9c4ec;position:relative;z-index:2;}
.quick-list{margin-top:16px;display:grid;gap:11px;position:relative;z-index:2;}
.quick-item{
  padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);
}
.quick-item b{display:block;font-size:14px;color:#fff;font-weight:600;}
.quick-item span{display:block;margin-top:4px;font-size:13px;color:#b8cceb;line-height:1.65;}
.quick-foot{
  margin-top:18px;position:relative;z-index:2;
  font-size:12.5px;color:#9fb8dc;line-height:1.7;
  padding-top:14px;border-top:1px dashed rgba(255,255,255,.18);
}
/* ---------- Sections ---------- */
.section{padding:66px 0;}
.section--surface{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--soft{background:var(--surface-2);}
.section-head{max-width:800px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--brand-dark);
  background:#e7effd;border-radius:999px;padding:6px 14px;
}
.eyebrow--green{background:#e8f7f3;color:var(--accent-dark);}
.section-head h2{font-size:clamp(22px,2.4vw,29px);margin-top:14px;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.88;}
/* ---------- Point grid ---------- */
.point-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.point-card{
  min-width:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcf0;}
.point-icon{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),#0d8ea0);
  margin-bottom:14px;
}
.point-card:nth-child(2) .point-icon{background:linear-gradient(135deg,#0fa896,#0c8f96);}
.point-card:nth-child(3) .point-icon{background:linear-gradient(135deg,#c9922f,#b9791d);}
.point-card:nth-child(4) .point-icon{background:linear-gradient(135deg,#1c2f4c,#3d5b84);}
.point-card h3{font-size:16.5px;}
.point-card p{margin-top:9px;font-size:14.5px;color:#44576f;line-height:1.82;}
/* ---------- Concept list ---------- */
.concept-list{display:grid;gap:14px;}
.concept-item{
  display:grid;grid-template-columns:minmax(0,224px) minmax(0,1fr);
  gap:26px;align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--radius);
  padding:22px 24px;
  box-shadow:var(--shadow-sm);
  transition:border-left-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.concept-item:hover{border-left-color:var(--accent);box-shadow:var(--shadow);transform:translateX(2px);}
.concept-item h3{font-size:16px;color:var(--ink);}
.concept-item h3 small{display:block;margin-top:6px;font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:.04em;}
.concept-item p{font-size:14.8px;color:#42556d;line-height:1.88;min-width:0;}
.concept-item p em{font-style:normal;color:var(--brand-dark);font-weight:600;}
/* ---------- Myth grid ---------- */
.myth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.myth-card{
  min-width:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:0;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.myth-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.myth-wrong{
  padding:16px 22px;
  background:#fdf1f1;
  border-bottom:1px solid #f4dcdc;
  font-size:14.5px;
  color:#96312b;
  line-height:1.78;
}
.myth-wrong b{display:block;font-size:12.5px;letter-spacing:.08em;color:#bb5d55;margin-bottom:5px;font-weight:700;}
.myth-right{padding:16px 22px;font-size:14.5px;color:#2d435c;line-height:1.85;}
.myth-right b{display:block;font-size:12.5px;letter-spacing:.08em;color:var(--accent-dark);margin-bottom:5px;font-weight:700;}
/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.step{
  min-width:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
  position:relative;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:#e7effd;color:var(--brand-dark);
  font-weight:700;font-size:14px;margin-bottom:13px;
}
.step h3{font-size:15.5px;}
.step p{margin-top:9px;font-size:14.3px;color:#465a72;line-height:1.8;}
/* ---------- Tool grid ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.tool-card{
  min-width:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow-sm);
  display:flex;
  gap:16px;
  align-items:flex-start;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfdcf0;}
.tool-mark{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;font-weight:700;font-size:15px;color:#fff;
  background:linear-gradient(135deg,var(--brand),#0d8ea0);
}
.tool-card:nth-child(2) .tool-mark{background:linear-gradient(135deg,#0fa896,#0a8074);}
.tool-card:nth-child(3) .tool-mark{background:linear-gradient(135deg,#c9922f,#a97716);}
.tool-card:nth-child(4) .tool-mark{background:linear-gradient(135deg,#1c2f4c,#35547d);}
.tool-body{min-width:0;}
.tool-body h3{font-size:16px;}
.tool-body p{margin-top:8px;font-size:14.5px;color:#465a72;line-height:1.85;}
/* ---------- Risk block ---------- */
.risk-block{
  background:linear-gradient(140deg,#08182c 0%,#12305c 60%,#0a5560 100%);
  border-radius:var(--radius-lg);
  padding:40px 38px;
  color:#dbe6f7;
  position:relative;
  overflow:hidden;
}
.risk-block::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,168,150,.32),transparent 70%);
}
.risk-block h2{font-size:clamp(21px,2.3vw,27px);color:#fff;position:relative;z-index:2;}
.risk-block > p{margin-top:12px;font-size:15px;color:#b8cceb;line-height:1.9;max-width:760px;position:relative;z-index:2;}
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:26px;position:relative;z-index:2;}
.risk-item{
  min-width:0;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);
  padding:18px 18px;
}
.risk-item b{display:block;font-size:14.5px;color:#fff;}
.risk-item span{display:block;margin-top:7px;font-size:13.8px;color:#b3c8e8;line-height:1.8;}
/* ---------- CMS posts ---------- */
.posts-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.post-card{
  min-width:0;
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcf0;}
.post-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12.5px;color:var(--muted);}
.post-meta .chip{
  padding:3px 10px;border-radius:999px;background:#eef4ff;color:var(--brand-dark);
  border:1px solid #dbe6fa;font-size:12px;
}
.post-card h3{font-size:16px;margin-top:12px;line-height:1.55;}
.post-card h3 a{transition:color .18s ease;}
.post-card h3 a:hover{color:var(--brand-dark);}
.post-card p{margin-top:9px;font-size:14.3px;color:#4b5e76;line-height:1.8;flex:1 1 auto;}
.post-more{
  margin-top:15px;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--brand-dark);
}
.post-more:hover{color:var(--accent-dark);}
.empty-note{
  background:var(--surface);border:1px dashed #cdd9ea;border-radius:var(--radius);
  padding:26px;text-align:center;color:var(--muted);font-size:14.5px;
}
.list-more-row{margin-top:28px;display:flex;justify-content:center;}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#c7d9f2;box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 56px 18px 22px;
  font-size:15.5px;font-weight:600;color:var(--ink);
  position:relative;
  transition:background-color .18s ease,color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#f7faff;color:var(--brand-dark);}
.faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:8px;
  display:grid;place-items:center;
  background:#eef4ff;color:var(--brand-dark);font-size:15px;font-weight:700;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff;transform:translateY(-50%) rotate(0deg);}
.faq-answer{padding:0 22px 20px;font-size:14.8px;color:#43566e;line-height:1.9;}
/* ---------- Download band ---------- */
.download-band{
  background:linear-gradient(135deg,#0d2144 0%,#1553c7 62%,#0b7f8c 100%);
  border-radius:var(--radius-lg);
  padding:42px 38px;
  color:#fff;
  box-shadow:var(--shadow-lg);
  position:relative;
  overflow:hidden;
}
.download-band::after{
  content:"";position:absolute;left:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,224,196,.26),transparent 70%);
}
.download-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:center;}
.download-band h2{font-size:clamp(21px,2.4vw,28px);color:#fff;}
.download-band p{margin-top:12px;font-size:15px;color:#cfdcf5;line-height:1.88;max-width:640px;}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;}
.dl-btn{
  display:inline-flex;flex-direction:column;align-items:flex-start;gap:2px;
  padding:12px 22px;border-radius:14px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;
  min-width:150px;
}
.dl-btn b{font-size:14.5px;font-weight:600;}
.dl-btn span{font-size:12px;color:#c6d7f2;}
.dl-btn:hover{background:rgba(255,255,255,.22);transform:translateY(-2px);box-shadow:0 12px 26px rgba(4,16,38,.3);}
.dl-btn:active{transform:translateY(0);}
.dl-btn:focus-visible{outline:2px solid #8ff0e0;outline-offset:3px;}
.dl-btn--main{background:#fff;border-color:#fff;color:var(--brand-dark);}
.dl-btn--main span{color:#5d7495;}
.dl-btn--main:hover{background:#f2f7ff;}
.dl-note{margin-top:18px;font-size:12.8px;color:#a9c2e8;position:relative;z-index:2;line-height:1.7;}
/* ---------- Footer ---------- */
.site-footer{
  background:#08182c;
  color:#a9bdd8;
  padding:54px 0 30px;
  margin-top:0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) minmax(0,1fr);
  gap:38px;
  padding-bottom:32px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8fa9cb;}
.footer-brand p{font-size:13.8px;color:#93a9c6;line-height:1.9;max-width:520px;}
.footer-col h3{font-size:14.5px;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:13.8px;color:#a2b8d6;transition:color .18s ease,padding-left .18s ease;}
.footer-col a:hover{color:#fff;padding-left:3px;}
.friend-links{margin-top:26px;}
.friend-links h3{font-size:14px;color:#fff;margin-bottom:12px;}
.friend-link-list{display:flex;flex-wrap:wrap;gap:8px;}
.friend-link-list a{
  display:inline-block;
  padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#a9c2e3;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.friend-link-list a:hover{background:rgba(21,83,199,.38);color:#fff;border-color:rgba(120,170,255,.5);}
.footer-bottom{
  margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.8px;color:#7d93b2;
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:30px;}
  .quick-card{max-width:520px;}
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .posts-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .risk-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .concept-item{grid-template-columns:minmax(0,1fr);gap:10px;}
  .download-inner{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:900px){
  .nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);
    padding:10px 16px 16px;
    display:none;
  }
  .nav.open{display:flex;}
  .nav a{width:100%;padding:11px 14px;border-radius:10px;}
  .nav a.nav-dl{display:block;background:#eef4ff;color:var(--brand-dark);font-weight:600;}
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .section{padding:52px 0;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .hero-grid{gap:24px;}
  .hero-copy h1{font-size:clamp(24px,6vw,31px);}
  .page-hero{padding:26px 0 44px;}
  .myth-grid,.tool-grid{grid-template-columns:minmax(0,1fr);}
  .posts-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .risk-block{padding:30px 22px;}
  .risk-grid{grid-template-columns:minmax(0,1fr);}
  .download-band{padding:30px 22px;}
  .dl-actions{width:100%;}
  .dl-btn{flex:1 1 160px;}
  .quick-card{padding:22px 18px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:11.5px;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .point-grid{grid-template-columns:minmax(0,1fr);}
  .steps{grid-template-columns:minmax(0,1fr);}
  .hero-actions .btn{width:100%;}
  .dl-btn{flex:1 1 100%;min-width:0;}
  .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:18px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{display:none;}
  .section{padding:44px 0;}
  .section-head{margin-bottom:26px;}
}