/* roulang page: index */
:root{
  --brand:#2457E6;
  --brand-dark:#1B46C9;
  --brand-light:#E7EEFF;
  --cyan:#35E6D0;
  --violet:#7B61FF;
  --amber:#FFB13B;
  --bg:#F5F7FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink:#0A1024;
  --ink-2:#111A36;
  --text:#10182B;
  --muted:#5B6B85;
  --on-dark:#F4F7FF;
  --on-dark-muted:#AFC0DC;
  --line:#DDE6F5;
  --line-dark:rgba(255,255,255,.10);
  --ok:#1FB57A;
  --r-card:20px;
  --r-img:16px;
  --r-btn:12px;
  --sh:0 8px 24px rgba(15,32,64,.06);
  --sh-h:0 16px 40px rgba(15,32,64,.12);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --shell:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:rgba(36,87,230,.16)}

.shell{width:min(100% - 48px,var(--shell));margin-inline:auto}
.section{padding:96px 0}
.section.alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-desc{margin-top:14px;color:var(--muted);font-size:16px;max-width:660px}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--brand);background:var(--brand-light);border-radius:999px;
  padding:6px 14px;margin-bottom:14px;
}
h1{font-size:clamp(34px,4.5vw,56px);font-weight:800;line-height:1.14;letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{color:var(--muted)}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(10,16,36,.98);
  backdrop-filter:saturate(140%) blur(6px);
}
.site-head::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.head-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;font-size:18px;font-weight:700}
.brand:hover{color:#fff}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  color:#0A1024;font-size:17px;font-weight:800;
  box-shadow:0 0 18px rgba(53,230,208,.35);
}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 12px;border-radius:10px;color:#C9D4EA;font-size:15px;font-weight:500;
  transition:all var(--t);
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  opacity:0;transform:scaleX(.35);transform-origin:left;transition:all var(--t);
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.main-nav a.active{
  color:#fff;background:rgba(53,230,208,.08);
  text-shadow:0 0 12px rgba(53,230,208,.35);
}
.main-nav a.active::after{opacity:1;transform:scaleX(1)}
.head-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.16);
  border-radius:12px;flex-direction:column;align-items:center;justify-content:center;
  gap:5px;z-index:80;position:relative;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:all var(--t)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:all var(--t);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(36,87,230,.22)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(36,87,230,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand);border-color:#C9D7F2}
.btn-ghost:hover{background:#EEF3FF;color:var(--brand-dark);border-color:var(--brand)}
.btn-amber{background:var(--amber);color:var(--ink);box-shadow:0 6px 18px rgba(255,177,59,.28)}
.btn-amber:hover{background:#FFA21A;color:var(--ink);transform:translateY(-1px)}
.btn-amber:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(36,87,230,.32);padding-bottom:2px}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.link-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"→";transition:transform var(--t)}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(760px 420px at 88% -12%, rgba(53,230,208,.16), transparent 66%),
    radial-gradient(620px 380px at 8% 108%, rgba(123,97,255,.10), transparent 68%),
    linear-gradient(180deg,#F9FBFF,#F5F7FC);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(36,87,230,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(36,87,230,.06) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(circle at 28% 18%,#000,transparent 72%);
  mask-image:radial-gradient(circle at 28% 18%,#000,transparent 72%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:80px 0 88px;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--muted);margin-top:22px;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.trust-row li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:#3B4A66;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;box-shadow:0 4px 12px rgba(15,32,64,.04);
}
.trust-row li::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--ok);box-shadow:0 0 0 3px rgba(31,181,122,.16);
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:24px;border:1px solid rgba(255,255,255,.7);
  box-shadow:0 24px 60px rgba(15,32,64,.16);
}
.float-card{
  position:absolute;left:-16px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:14px 20px;box-shadow:var(--sh-h);display:flex;flex-direction:column;gap:2px;
}
.float-card strong{font-size:24px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.float-card span{font-size:13px;color:var(--muted);line-height:1.5}
.status-tag{
  position:absolute;right:16px;top:16px;display:inline-flex;align-items:center;gap:8px;
  background:rgba(10,16,36,.82);color:var(--on-dark);font-size:12px;
  padding:7px 14px;border-radius:999px;
}
.status-tag i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pain-item{
  background:var(--surface);border:1px solid var(--line);border-bottom:3px solid transparent;
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pain-item:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-bottom-color:var(--brand)}
.pain-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);
  color:var(--brand);display:grid;place-items:center;margin-bottom:18px;
}
.pain-ico svg{width:22px;height:22px}
.pain-item h3{margin-bottom:8px}
.pain-item p{font-size:15px;line-height:1.8}

/* ---------- 解决方案 ---------- */
.sol-list{display:flex;flex-direction:column}
.sol-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px 0;border-top:1px solid var(--line);
}
.sol-row:first-child{border-top:0;padding-top:0}
.sol-row:last-child{padding-bottom:0}
.sol-row:nth-child(even) .sol-media{order:-1}
.sol-media{position:relative}
.sol-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh);
}
.sol-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);background:var(--brand-light);border-radius:8px;
  padding:4px 10px;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.sol-body h3{margin-bottom:12px}
.sol-body p{font-size:15.5px;line-height:1.85}
.sol-points{display:grid;gap:10px;margin:20px 0 22px}
.sol-points li{position:relative;padding-left:22px;font-size:15px;color:#37455F;line-height:1.75}
.sol-points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--cyan));
}

/* ---------- 数据带 ---------- */
.stats{background:var(--ink);color:var(--on-dark);padding:72px 0;position:relative}
.stats::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.stats-head{color:var(--on-dark-muted);font-size:14px;margin-bottom:36px;letter-spacing:.04em}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-num{
  font-size:clamp(34px,4vw,46px);font-weight:800;line-height:1.1;
  color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:.55em;color:var(--cyan);margin-left:2px}
.stat-label{font-size:13px;color:var(--on-dark-muted);margin-top:10px;line-height:1.7}
.stat-line{width:32px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--cyan),var(--violet));margin-bottom:16px}

/* ---------- 证言 ---------- */
.testi{display:grid;grid-template-columns:1.5fr 1fr;gap:24px}
.testi-main{
  position:relative;overflow:hidden;background:var(--ink);color:var(--on-dark);
  border-radius:var(--r-card);padding:40px;display:flex;flex-direction:column;justify-content:space-between;
}
.testi-main::before{
  content:"“";position:absolute;right:28px;top:-22px;
  font-size:150px;line-height:1;color:rgba(53,230,208,.16);font-family:Georgia,serif;
}
.testi-quote{font-size:20px;line-height:1.75;color:var(--on-dark);font-weight:500;max-width:34em}
.testi-person{display:flex;align-items:center;gap:12px;margin-top:32px}
.testi-avatar{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--violet));color:#0A1024;
  font-weight:700;font-size:15px;flex:0 0 44px;
}
.testi-name{font-size:15px;font-weight:600;color:var(--on-dark);line-height:1.4}
.testi-role{font-size:13px;color:var(--on-dark-muted);line-height:1.4}
.testi-side{display:grid;gap:24px}
.testi-mini{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t);
}
.testi-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-h)}
.testi-mini p{font-size:15px;line-height:1.8;color:#37455F}
.testi-mini .testi-name{color:var(--text);margin-top:16px}
.testi-mini .testi-role{color:var(--muted)}

/* ---------- 最新信息 ---------- */
.latest-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:rgba(36,87,230,.3)}
.latest-main{display:grid;grid-template-columns:1fr 1fr;overflow:hidden}
.latest-main-media{display:block;overflow:hidden;background:var(--surface-2)}
.latest-main-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--t)}
.latest-main:hover .latest-main-media img{transform:scale(1.03)}
.latest-main-body{padding:26px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.badge{
  display:inline-block;align-self:flex-start;font-size:12px;font-weight:600;
  color:var(--brand);background:var(--brand-light);border-radius:999px;padding:4px 12px;line-height:1.6;
}
.latest-main-body h3{font-size:19px;line-height:1.5}
.latest-main-body h3 a{color:var(--text)}
.latest-main-body h3 a:hover{color:var(--brand)}
.latest-main-body p{font-size:14px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:#8394AE}
.latest-side{display:grid;gap:24px}
.latest-row{
  display:grid;grid-template-columns:96px 1fr;gap:16px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:16px;box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  color:inherit;
}
.latest-row:hover{transform:translateY(-2px);box-shadow:var(--sh-h);border-color:rgba(36,87,230,.3);color:inherit}
.latest-row img{width:96px;height:74px;object-fit:cover;border-radius:10px;background:var(--surface-2)}
.latest-row h3{font-size:15.5px;line-height:1.5;margin-bottom:6px;color:var(--text)}
.latest-row:hover h3{color:var(--brand)}
.latest-row .meta{margin-top:2px}
.empty-state{
  border:2px dashed #C9D7F2;border-radius:var(--r-card);background:#FBFCFF;
  padding:56px 24px;text-align:center;color:var(--muted);
}
.empty-state svg{width:40px;height:40px;color:#9FB4D8;margin:0 auto 14px}
.empty-state strong{display:block;color:var(--text);font-size:16px;margin-bottom:6px}
.empty-state p{font-size:14px}
.empty-state a{margin-top:14px;display:inline-block;font-size:14px;font-weight:600}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq{display:grid;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid transparent;
  border-radius:16px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{box-shadow:var(--sh)}
.faq-item.open{border-left-color:var(--brand);box-shadow:var(--sh)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  min-height:56px;transition:color var(--t);
}
.faq-q:hover{color:var(--brand)}
.faq-plus{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform var(--t)}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-plus::before{left:50%;top:2px;bottom:2px;width:2px;transform:translateX(-50%)}
.faq-plus::after{top:50%;left:2px;right:2px;height:2px;transform:translateY(-50%)}
.faq-item.open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms cubic-bezier(.2,.7,.3,1)}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85}

/* ---------- 最终 CTA ---------- */
.cta{
  position:relative;overflow:hidden;padding:96px 0;
  background:linear-gradient(180deg,#EFF4FF,#E7EEFF);
  border-top:1px solid var(--line);
}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(36,87,230,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(36,87,230,.07) 1px,transparent 1px);
  background-size:32px 32px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%,#000,transparent 78%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 424px;gap:56px;align-items:center}
.cta-list{display:grid;gap:12px;margin-top:24px}
.cta-list li{position:relative;padding-left:24px;font-size:15.5px;color:#33415C;line-height:1.8}
.cta-list li::before{
  content:"";position:absolute;left:0;top:11px;width:10px;height:10px;border-radius:3px;
  background:rgba(36,87,230,.18);border:1px solid rgba(36,87,230,.5);
}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-h);
}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-hint{font-size:13px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#2A3853}
.field input,.field select{
  width:100%;height:48px;border:1px solid var(--line);border-radius:12px;
  padding:0 14px;background:#fff;transition:border-color var(--t),box-shadow var(--t);
}
.field input::placeholder{color:#A7B4C9}
.field input:focus,.field select:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(36,87,230,.14)}
.field.invalid input,.field.invalid select{border-color:#E5484D;box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.err-msg{display:none;font-size:13px;color:#E5484D;margin-top:6px}
.field.invalid .err-msg{display:block}
.privacy{font-size:12px;color:#8394AE;line-height:1.7;margin-top:14px}
.form-ok{
  display:none;margin-top:14px;font-size:14px;color:#12805A;background:#EAF8F2;
  border:1px solid #BFEBD8;border-radius:12px;padding:12px 14px;line-height:1.7;
}
.form-ok.show{display:block}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:var(--on-dark-muted);position:relative;padding-top:64px}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-foot a{color:var(--on-dark-muted)}
.site-foot a:hover{color:var(--cyan)}
.foot-brand .brand{margin-bottom:16px}
.foot-desc{font-size:14px;line-height:1.85;max-width:26em}
.foot-title{font-size:14px;font-weight:700;color:var(--on-dark);margin-bottom:16px;letter-spacing:.02em}
.foot-links{display:grid;gap:10px;font-size:14px}
.foot-contact li{font-size:14px;line-height:1.9;display:flex;gap:8px}
.foot-contact span{color:#7E90AE;flex:0 0 auto}
.foot-bottom{
  border-top:1px solid var(--line-dark);padding:20px 0 24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7E90AE;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .shell{width:min(100% - 48px,1120px)}
  .hero-grid{gap:44px}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:64px 0 72px}
  .hero-visual img{aspect-ratio:16/9}
  .float-card{left:12px;bottom:16px}
  .section{padding:72px 0}
  .sol-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .sol-row:nth-child(even) .sol-media{order:0}
  .latest-grid{grid-template-columns:1fr}
  .latest-main{grid-template-columns:1fr}
  .latest-main-media img{aspect-ratio:16/9}
  .testi{grid-template-columns:1fr}
  .testi-side{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .cta{padding:72px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}

  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;inset:0 0 0 auto;width:min(84vw,360px);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:4px;padding:88px 20px 32px;margin-left:0;
    background:var(--ink-2);transform:translateX(102%);
    transition:transform 280ms cubic-bezier(.2,.7,.3,1);
    z-index:70;overflow-y:auto;box-shadow:-20px 0 60px rgba(0,0,0,.45);
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav a{min-height:48px;font-size:18px;padding:0 14px;border-radius:10px}
  .main-nav a::after{display:none}
  .main-nav a.active{box-shadow:inset 3px 0 0 var(--cyan);background:rgba(53,230,208,.10)}
  .head-actions{margin-left:auto}
}
@media (max-width:767px){
  .head-inner{min-height:64px}
  .brand-text{font-size:16px}
  .brand-mark{width:32px;height:32px;font-size:15px;border-radius:9px}
  .head-actions .btn-amber{display:none}
  .section{padding:56px 0}
  .section.alt{padding:56px 0}
  .pain-grid{grid-template-columns:1fr}
  .stats{padding:56px 0}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px}
  .testi-side{grid-template-columns:1fr}
  .sec-head{margin-bottom:28px}
  .hero-sub{font-size:16px}
  .cta{padding:56px 0}
  .form-card{padding:22px}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  .shell{width:calc(100% - 32px)}
  h1{font-size:30px}
  .hero-cta .btn{width:100%}
  .hero-grid{padding:48px 0 56px}
  .solution .sol-row{padding:32px 0}
  .latest-main-body{padding:20px}
  .latest-row{grid-template-columns:80px 1fr}
  .latest-row img{width:80px;height:64px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .btn{width:100%}
  .btn.btn-sm{width:auto}
  .link-more{align-self:flex-start}
}

/* roulang page: article */
:root{
  --brand:#2457E6;
  --brand-deep:#1B46C9;
  --brand-soft:#E7EEFF;
  --neon:#35E6D0;
  --violet:#7B61FF;
  --amber:#FFB13B;
  --amber-deep:#FFA21A;
  --bg:#F5F7FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink:#0A1024;
  --ink-2:#111A36;
  --text:#10182B;
  --muted:#5B6B85;
  --line:#DDE6F5;
  --white-soft:#F4F7FF;
  --white-dim:#AFC0DC;
  --ok:#1FB57A;
  --warn:#FF8A3D;
  --err:#E5484D;
  --r-card:20px;
  --r-img:16px;
  --r-btn:12px;
  --shadow-sm:0 8px 24px rgba(15,32,64,.06);
  --shadow-md:0 16px 40px rgba(15,32,64,.12);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-align:left;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-deep)}
ul,ol{margin:0;padding:0}
li{list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:90;
  background:var(--ink);
  box-shadow:0 6px 24px rgba(6,12,30,.28);
}
.site-head::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  opacity:.9;
}
.head-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  display:grid;place-items:center;
  color:#fff;font-size:18px;font-weight:800;line-height:1;
  box-shadow:0 0 0 1px rgba(255,255,255,.12) inset;
}
.brand-text{font-size:18px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:#C9D4EA;
  transition:color var(--ease),background var(--ease);
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.main-nav a.active{
  color:#fff;
  background:rgba(53,230,208,.08);
  box-shadow:0 0 18px rgba(53,230,208,.12) inset;
}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--neon);border-radius:2px;
  box-shadow:0 0 10px rgba(53,230,208,.85);
}
.head-actions{display:flex;align-items:center;gap:10px;margin-left:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);border-radius:10px;
  flex-direction:column;justify-content:center;align-items:center;gap:4px;
  transition:background var(--ease),border-color var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:#E4ECFA;border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle:hover{background:rgba(255,255,255,.1);border-color:rgba(53,230,208,.5)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(36,87,230,.22)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;box-shadow:0 12px 26px rgba(36,87,230,.3)}
.btn-amber{background:var(--amber);color:var(--ink);box-shadow:0 8px 20px rgba(255,177,59,.25)}
.btn-amber:hover{background:var(--amber-deep);color:var(--ink)}
.btn-ghost{background:transparent;color:var(--brand);border-color:#C9D7F2}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:#AEC4EE}
.btn-block{width:100%}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:28px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#AEBBD2}
.crumbs .current{color:var(--brand);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-hero{padding:20px 0 0}
.article-head{max-width:900px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.4;
}
.article-title{
  margin:16px 0 18px;
  font-size:clamp(30px,3.6vw,46px);
  font-weight:800;line-height:1.22;letter-spacing:-.02em;color:var(--text);
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--muted)}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:#93A4C0;font-size:13px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C3D0E6}

.article-cover{
  margin:30px 0 0;
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:var(--surface-2);
  aspect-ratio:16/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- article layout ---------- */
.article-main{padding:44px 0 0}
.article-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;align-items:start;
}
.article-body{max-width:800px;font-size:17px;line-height:1.95;color:#26314A}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:28px;font-weight:700;line-height:1.4;
  margin:44px 0 16px;padding-left:16px;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:linear-gradient(180deg,var(--brand),var(--violet));
}
.article-body h3{font-size:22px;font-weight:600;line-height:1.45;margin:32px 0 12px;color:var(--text)}
.article-body h4{font-size:18px;font-weight:600;margin:24px 0 10px;color:var(--text)}
.article-body p{margin:0 0 1.2em;font-size:17px;line-height:1.95;color:#26314A}
.article-body strong{font-weight:700;color:var(--text)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-deep)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:22px}
.article-body ul li{list-style:disc;line-height:1.9;margin-bottom:.4em}
.article-body ol li{list-style:decimal;line-height:1.9;margin-bottom:.4em}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--brand-soft);
  border-left:3px solid var(--neon);
  border-radius:0 12px 12px 0;
  color:#1C2A4A;font-size:16.5px;line-height:1.9;
}
.article-body figure{margin:24px 0}
.article-body img{border-radius:var(--r-img);width:100%;height:auto}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.7}
.article-body .table-scroll{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:14px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;background:var(--surface)}
.article-body thead th{background:var(--surface-2);color:var(--text);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);line-height:1.7}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- aside ---------- */
.aside{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:20px;
}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-title{
  display:flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px;
}
.side-title::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(53,230,208,.9)}
.toc-list a{
  display:block;padding:7px 0 7px 12px;
  border-left:2px solid var(--line);
  font-size:14px;line-height:1.6;color:var(--muted);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand);background:#F8FAFF}
.mini-list{display:flex;flex-direction:column}
.mini-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);
}
.mini-item:last-child{border-bottom:0;padding-bottom:0}
.mini-item:first-child{padding-top:0}
.mini-thumb{
  flex:0 0 56px;width:56px;height:56px;border-radius:10px;overflow:hidden;background:var(--surface-2);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-body{min-width:0}
.mini-tag{font-size:11px;color:var(--brand);font-weight:600}
.mini-link{
  display:block;font-size:14px;font-weight:600;line-height:1.55;color:var(--text);
  margin-top:3px;
  transition:color var(--ease);
}
.mini-link:hover{color:var(--brand)}
.side-back{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand)}
.side-back:hover{color:var(--brand-deep)}
.side-cta{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-2) 100%);
  border:1px solid rgba(255,255,255,.1);
  color:var(--white-dim);box-shadow:none;
}
.side-cta .side-title{color:var(--white-soft)}
.side-cta p{font-size:14px;line-height:1.8;color:var(--white-dim);margin:0 0 16px}

/* ---------- related ---------- */
.related-section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.section-head h2{margin:0;font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;color:var(--text)}
.section-head p{margin:8px 0 0;font-size:14px;color:var(--muted)}
.link-more{font-size:14px;font-weight:600;color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.link-more:hover{color:var(--brand-deep)}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(36,87,230,.3)}
.rel-media{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.03)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body .tag{align-self:flex-start;font-size:12px;padding:4px 12px}
.rel-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--text);margin:0}
.rel-card:hover .rel-title{color:var(--brand)}
.rel-time{font-size:12px;color:var(--muted);margin-top:auto}

/* ---------- cta strip ---------- */
.article-cta{padding:72px 0 96px}
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--brand-soft);
  border:1px solid #D3E0F8;border-radius:24px;
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(36,87,230,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(36,87,230,.07) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:linear-gradient(120deg,transparent 30%,#000 100%);
  -webkit-mask-image:linear-gradient(120deg,transparent 30%,#000 100%);
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{margin:0 0 10px;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;color:var(--text)}
.cta-panel p{margin:0;font-size:15px;line-height:1.85;color:#38476A;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- empty state ---------- */
.empty-article{
  border:1px dashed #C6D6F2;border-radius:var(--r-card);
  background:var(--surface);padding:56px 28px;text-align:center;
}
.empty-article i{font-size:26px;color:#9FB4DA}
.empty-article .empty-title{margin:14px 0 8px;font-size:20px;font-weight:700;color:var(--text)}
.empty-article .empty-sub{margin:0 0 22px;font-size:15px;color:var(--muted)}

/* ---------- footer ---------- */
.site-foot{
  position:relative;background:var(--ink);color:var(--white-dim);
  padding:64px 0 28px;margin-top:0;
}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:16px}
.foot-desc{margin:0;font-size:14px;line-height:1.85;color:var(--white-dim);max-width:320px}
.foot-title{font-size:15px;font-weight:700;color:var(--white-soft);margin-bottom:16px}
.foot-links li{margin-bottom:10px}
.foot-links a{font-size:14px;color:var(--white-dim);transition:color var(--ease)}
.foot-links a:hover{color:var(--neon)}
.foot-contact li{font-size:14px;line-height:1.8;color:var(--white-dim);margin-bottom:10px}
.foot-contact span{color:var(--white-soft);font-weight:600;margin-right:8px}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8798B5;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
}
@media (max-width:1023px){
  .head-inner{height:64px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:20px 20px 40px;
    background:var(--ink);
    overflow-y:auto;z-index:95;
  }
  .main-nav.open{display:flex}
  .main-nav a{
    min-height:52px;padding:0 16px;font-size:18px;font-weight:600;
    color:#C9D4EA;border-radius:10px;
  }
  .main-nav a.active{background:rgba(53,230,208,.08);color:#fff}
  .main-nav a.active::after{left:0;top:12px;bottom:12px;right:auto;width:3px;height:auto}
  .head-actions{margin-left:auto}
  .head-actions .btn-sm{min-height:40px;padding:0 14px;font-size:13px}
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .aside{position:static;top:auto;margin-top:8px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-panel{padding:36px 32px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .shell{padding:0 16px}
  .brand-text{font-size:16px}
  .article-title{font-size:clamp(26px,7vw,32px)}
  .article-body{font-size:16.5px}
  .article-body p{font-size:16.5px;line-height:1.9}
  .article-body h2{font-size:23px;margin:34px 0 14px}
  .article-body h3{font-size:19px}
  .related-section{padding:56px 0 0}
  .article-cta{padding:56px 0 72px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .cta-panel{padding:28px 22px;border-radius:20px}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .head-actions .btn-sm{display:none}
  .meta-row{gap:8px 14px}
  .article-cover{aspect-ratio:16/10;border-radius:14px}
  .side-card{padding:18px}
}

/* roulang page: category1 */
:root{
  --brand:#2457E6;
  --brand-dark:#1B46C9;
  --brand-light:#E7EEFF;
  --neon:#35E6D0;
  --violet:#7B61FF;
  --amber:#FFB13B;
  --amber-hover:#FFA21A;
  --bg:#F5F7FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink:#0A1024;
  --ink-2:#111A36;
  --text:#10182B;
  --muted:#5B6B85;
  --text-inv:#F4F7FF;
  --muted-inv:#AFC0DC;
  --line:#DDE6F5;
  --line-dark:rgba(255,255,255,.10);
  --success:#1FB57A;
  --warn:#FF8A3D;
  --danger:#E5484D;
  --r-card:20px;
  --r-img:16px;
  --r-btn:12px;
  --sh-card:0 8px 24px rgba(15,32,64,.06);
  --sh-hover:0 16px 40px rgba(15,32,64,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --shell:1200px;
  --shell-wide:1320px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-padding-top:88px;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding-left:24px;padding-right:24px;}
.shell-wide{width:100%;max-width:var(--shell-wide);margin:0 auto;padding-left:24px;padding-right:24px;}

/* ============ header / nav ============ */
.site-head{position:sticky;top:0;z-index:80;background:var(--ink);}
.site-head::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  box-shadow:0 0 12px rgba(53,230,208,.35);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-inv);}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,#2457E6,#7B61FF);
  color:#fff;font-size:18px;font-weight:700;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16),0 6px 16px rgba(36,87,230,.35);
  flex:0 0 auto;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;color:#fff;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:8px 13px;border-radius:10px;
  font-size:15px;font-weight:500;color:#C9D4EA;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.main-nav a.active{
  color:#fff;background:rgba(53,230,208,.08);
  text-shadow:0 0 12px rgba(53,230,208,.45);
}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  box-shadow:0 0 10px rgba(53,230,208,.7);
}
.head-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-dark);background:rgba(255,255,255,.04);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#E6EEFB;transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;text-align:center;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(36,87,230,.22);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(36,87,230,.3);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(36,87,230,.24);}
.btn-ghost{background:transparent;color:var(--brand);border-color:#C9D7F2;}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-amber{background:var(--amber);color:var(--ink);box-shadow:0 6px 16px rgba(255,177,59,.28);}
.btn-amber:hover{background:var(--amber-hover);color:var(--ink);transform:translateY(-1px);}
.btn-amber:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}

/* ============ hero ============ */
.page-hero{
  position:relative;
  padding:44px 0 64px;
  background:
    radial-gradient(900px 420px at 90% -20%,rgba(53,230,208,.16),transparent 62%),
    radial-gradient(700px 360px at 4% 110%,rgba(123,97,255,.10),transparent 66%),
    var(--bg);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(36,87,230,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(36,87,230,.055) 1px,transparent 1px);
  background-size:26px 26px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  pointer-events:none;
}
.page-hero .shell{position:relative;z-index:1;}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:20px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{margin:0 8px;color:#A9B8D2;}
.crumbs .current{color:var(--brand);font-weight:600;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.1em;
  color:var(--brand);background:var(--brand-light);
  border:1px solid #D8E3FF;border-radius:999px;padding:6px 13px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 0 3px rgba(53,230,208,.2);display:inline-block;}
.hero-grid{gap:48px;align-items:center;}
.hero-copy h1{
  font-size:clamp(30px,3.6vw,44px);
  font-weight:800;line-height:1.16;letter-spacing:-.02em;
  margin:18px 0 18px;color:var(--text);
}
.hero-copy h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:16.5px;line-height:1.85;color:var(--muted);max-width:560px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tags a{
  display:inline-flex;align-items:center;min-height:38px;padding:0 16px;
  border-radius:999px;border:1px solid #D5E0F6;background:#fff;
  font-size:14px;font-weight:500;color:var(--muted);
  box-shadow:0 2px 8px rgba(15,32,64,.04);
  transition:all .22s var(--ease);
}
.hero-tags a:hover{color:var(--brand);border-color:rgba(36,87,230,.4);transform:translateY(-2px);box-shadow:0 8px 18px rgba(15,32,64,.08);}
.hero-media{position:relative;}
.hero-figure{
  position:relative;aspect-ratio:4/3;border-radius:var(--r-img);overflow:hidden;
  border:1px solid #D8E3FF;box-shadow:0 18px 44px rgba(15,32,64,.14);background:var(--surface-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.media-badge{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:rgba(10,16,36,.82);color:#EAF2FF;
  font-size:12.5px;font-weight:500;letter-spacing:.02em;
  border:1px solid rgba(255,255,255,.14);
}
.media-badge i{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(53,230,208,.9);display:inline-block;}

/* ============ section common ============ */
.section{padding:96px 0;}
.section-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.28;
  letter-spacing:-.01em;margin:16px 0 14px;color:var(--text);
}
.section-head p{font-size:16px;color:var(--muted);line-height:1.85;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ timeline ============ */
.timeline-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:64px;align-items:start;}
.tl-aside{position:sticky;top:96px;}
.tl-aside h2{font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.28;margin:16px 0 14px;}
.tl-aside p{font-size:15.5px;color:var(--muted);line-height:1.85;}
.tl-aside .aside-note{
  margin-top:24px;padding:16px 18px;border-radius:14px;
  background:var(--surface-2);border:1px solid #DCE7FA;
  font-size:13.5px;color:var(--muted);line-height:1.8;
}
.tl-list{position:relative;padding-left:80px;}
.tl-list::before{
  content:"";position:absolute;left:27px;top:10px;bottom:34px;width:2px;
  background:linear-gradient(180deg,rgba(36,87,230,.55),rgba(123,97,255,.4) 55%,rgba(53,230,208,.4));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  position:absolute;left:-80px;top:0;
  width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);
  color:var(--brand);font-size:17px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-card);
  transition:all .22s var(--ease);
}
.tl-item:hover .tl-num{border-color:rgba(36,87,230,.4);box-shadow:0 12px 26px rgba(36,87,230,.16);transform:translateY(-2px);}
.tl-body{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--sh-card);transition:all .22s var(--ease);}
.tl-body:hover{border-color:rgba(36,87,230,.3);box-shadow:var(--sh-hover);transform:translateY(-3px);}
.tl-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px;color:var(--text);}
.tl-body p{font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ============ checklist ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px 22px;border-radius:16px;
  background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-card);
  transition:all .22s var(--ease);
}
.check-item:hover{border-color:rgba(36,87,230,.3);box-shadow:var(--sh-hover);transform:translateY(-3px);}
.dot{width:10px;height:10px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(31,181,122,.12);margin-top:9px;flex:0 0 auto;}
.dot.warn{background:var(--warn);box-shadow:0 0 0 4px rgba(255,138,61,.14);}
.check-item strong{display:block;font-size:16px;font-weight:600;color:var(--text);line-height:1.5;margin-bottom:4px;}
.check-item span{display:block;font-size:14px;color:var(--muted);line-height:1.75;}

/* ============ faq ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:0 24px;margin-bottom:12px;box-shadow:var(--sh-card);
  border-left:3px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-hover);}
.faq-item[open]{border-left-color:var(--brand);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-plus{position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform .25s var(--ease);}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
.faq-plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-body{padding:0 0 22px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ entry links ============ */
.entry-list{display:grid;gap:14px;max-width:900px;}
.entry-link{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;border-radius:16px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-card);
  color:var(--text);transition:all .22s var(--ease);
}
.entry-link:hover{color:var(--brand);border-color:rgba(36,87,230,.3);transform:translateY(-2px);box-shadow:var(--sh-hover);}
.entry-link .entry-main strong{display:block;font-size:17px;font-weight:600;line-height:1.5;margin-bottom:4px;color:inherit;}
.entry-link .entry-main span{display:block;font-size:14px;color:var(--muted);line-height:1.7;}
.entry-link .arrow{
  width:36px;height:36px;border-radius:50%;flex:0 0 auto;
  display:grid;place-items:center;border:1px solid #D5E0F6;color:var(--brand);
  background:#F7FAFF;font-size:15px;transition:all .22s var(--ease);
}
.entry-link:hover .arrow{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateX(3px);}

/* ============ cta bar ============ */
.cta-section{padding:0 0 96px;}
.cta-bar{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:48px;
  border-radius:24px;border:1px solid #D8E3FF;
  background:linear-gradient(120deg,#EEF3FF 0%,#E7EEFF 55%,#EAF7F5 100%);
}
.cta-bar::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(36,87,230,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(36,87,230,.07) 1px,transparent 1px);
  background-size:24px 24px;mask-image:linear-gradient(90deg,rgba(0,0,0,.85),transparent 82%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:600px;}
.cta-copy h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;margin-bottom:12px;color:var(--text);}
.cta-copy p{font-size:15.5px;color:var(--muted);line-height:1.85;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;}

/* ============ footer ============ */
.site-foot{position:relative;background:var(--ink);color:var(--muted-inv);padding:72px 0 28px;}
.site-foot::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  box-shadow:0 0 14px rgba(53,230,208,.32);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.foot-desc{font-size:14px;line-height:1.85;color:var(--muted-inv);margin-top:16px;max-width:290px;}
.foot-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.foot-links{display:grid;gap:10px;}
.foot-links a{color:var(--muted-inv);font-size:14px;transition:color .2s var(--ease);}
.foot-links a:hover{color:var(--neon);}
.foot-contact{display:grid;gap:10px;font-size:14px;}
.foot-contact span{color:#fff;display:inline-block;min-width:46px;font-weight:500;}
.foot-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#8FA2BF;
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .timeline-layout{gap:48px;grid-template-columns:280px minmax(0,1fr);}
}
@media (max-width:1023px){
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:24px 24px 48px;background:var(--ink);
    overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
    border-top:1px solid var(--line-dark);
  }
  .main-nav.open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{font-size:18px;min-height:52px;padding:12px 16px;border-radius:12px;}
  .main-nav a.active::after{display:none;}
  .main-nav a.active{box-shadow:inset 3px 0 0 var(--neon);}
  .nav-toggle{display:flex;}
  .section{padding:64px 0;}
  .page-hero{padding:32px 0 52px;}
  .hero-grid{gap:36px;}
  .timeline-layout{grid-template-columns:1fr;gap:32px;}
  .tl-aside{position:static;}
  .tl-list{padding-left:0;}
  .tl-list::before{display:none;}
  .tl-item{padding-bottom:20px;padding-left:0;}
  .tl-num{position:static;margin-bottom:14px;width:48px;height:48px;border-radius:14px;font-size:15px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:36px;}
  .cta-section{padding-bottom:64px;}
}
@media (max-width:767px){
  .check-grid{grid-template-columns:1fr;}
  .hero-copy h1{font-size:30px;}
  .section-head{margin-bottom:32px;}
}
@media (max-width:639px){
  .shell,.shell-wide{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .page-hero{padding:24px 0 44px;}
  .hero-lead{font-size:15.5px;}
  .hero-tags a{min-height:40px;font-size:13.5px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;}
  .cta-bar{padding:28px 22px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .entry-link{padding:18px;gap:14px;}
  .brand-text{font-size:16px;}
  .head-inner{min-height:64px;}
  .main-nav{top:64px;}
}

/* roulang page: category2 */
:root{
  --brand:#2457E6;
  --brand-dark:#1B46C9;
  --brand-light:#E7EEFF;
  --cyan:#35E6D0;
  --violet:#7B61FF;
  --amber:#FFB13B;
  --amber-hover:#FFA21A;
  --bg:#F5F7FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink:#0A1024;
  --ink-2:#111A36;
  --text:#10182B;
  --muted:#5B6B85;
  --line:#DDE6F5;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 8px 24px rgba(15,32,64,.06);
  --shadow-2:0 16px 40px rgba(15,32,64,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --shell:1200px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-align:left;
}

h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:4px;
}

h1{font-size:clamp(34px,4.2vw,52px);font-weight:800;line-height:1.14;letter-spacing:-.02em;}
h2{font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.26;letter-spacing:-.01em;}
h3{font-size:20px;font-weight:600;line-height:1.45;}

.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(36,87,230,.22);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(36,87,230,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:#C9D7F2;}
.btn-ghost:hover{background:#EEF3FF;color:var(--brand-dark);border-color:#AFC4EE;}
.btn-amber{background:var(--amber);color:var(--ink);box-shadow:0 8px 20px rgba(255,177,59,.26);}
.btn-amber:hover{background:var(--amber-hover);color:var(--ink);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.text-link:hover{color:var(--brand-dark);}
.text-link::after{content:"→";text-decoration:none;font-size:14px;}

/* ---------- Header / Nav ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--ink);
  box-shadow:0 6px 24px rgba(6,12,30,.35);
}
.site-head::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 58%,var(--amber));
}
.head-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  color:#fff;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#fff;
  font-size:18px;
  font-weight:800;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);
  flex:0 0 auto;
}
.brand-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:#fff;
  white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:8px;
  font-size:15px;
  color:#C9D4EA;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.main-nav a.active{
  color:#fff;
  background:rgba(53,230,208,.08);
  box-shadow:inset 0 -2px 0 var(--cyan),0 0 14px rgba(53,230,208,.28);
}
.head-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.14);
  border-radius:10px;
  background:rgba(255,255,255,.04);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:#E6EEFF;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Breadcrumb ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:22px 0 0;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb span{color:#B8C5DC;}
.crumb em{font-style:normal;color:var(--brand);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--bg);
  padding-bottom:64px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(36,87,230,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(36,87,230,.05) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-120px;right:-80px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,230,208,.18),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
  padding-top:36px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,230,208,.2);
}
.hero-copy h1{margin-top:18px;}
.hero-sub{
  margin-top:18px;
  max-width:34em;
  font-size:17px;
  line-height:1.85;
  color:var(--muted);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:8px 16px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{border-color:rgba(36,87,230,.4);color:var(--brand);transform:translateY(-2px);}
.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  aspect-ratio:16/10;
  background:var(--surface-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-status{
  position:absolute;
  left:18px;bottom:18px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(10,16,36,.78);
  color:#E9F2FF;
  font-size:12px;
  backdrop-filter:blur(4px);
}
.hero-status::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(53,230,208,.8);
}

/* ---------- Section basics ---------- */
.section{padding:72px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:36px;
}
.sec-head h2{margin-top:14px;}
.sec-head p{
  margin-top:12px;
  max-width:44em;
  color:var(--muted);
  font-size:16px;
}

.grid-x{display:flex;flex-flow:row wrap;margin-left:-12px;margin-right:-12px;}
.grid-x > .cell{padding-left:12px;padding-right:12px;width:auto;flex:0 0 auto;min-width:0;}
.col-4{flex:0 0 33.3333%;max-width:33.3333%;}
.col-6{flex:0 0 50%;max-width:50%;}
.col-8{flex:0 0 66.6667%;max-width:66.6667%;}
.col-12{flex:0 0 100%;max-width:100%;}

/* ---------- Featured card ---------- */
.featured-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  align-items:stretch;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.featured-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:rgba(36,87,230,.3);}
.featured-media{
  display:block;
  height:100%;
  min-height:320px;
  overflow:hidden;
  background:var(--surface-2);
}
.featured-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.featured-card:hover .featured-media img{transform:scale(1.03);}
.featured-body{
  padding:32px;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:14px;
}
.featured-body h3{font-size:24px;line-height:1.4;}
.featured-body h3 a{color:var(--text);}
.featured-body h3 a:hover{color:var(--brand);}
.featured-body p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.badge{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:12.5px;
  font-weight:600;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  font-size:13px;
  color:var(--muted);
  padding-top:2px;
}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-row span::before{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:#C2CFE6;
}
.featured-body .btn{margin-top:6px;}

/* ---------- Brief rows ---------- */
.brief-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.brief-row{
  display:flex;
  align-items:center;
  gap:20px;
  padding:18px 22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  color:var(--text);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.brief-row:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-2);
  border-color:rgba(36,87,230,.3);
  color:var(--text);
}
.brief-thumb{
  flex:0 0 auto;
  width:80px;height:80px;
  border-radius:12px;
  overflow:hidden;
  background:var(--surface-2);
}
.brief-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.brief-row:hover .brief-thumb img{transform:scale(1.06);}
.brief-text{flex:1 1 auto;min-width:0;}
.brief-cat{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand);
  letter-spacing:.04em;
}
.brief-text h3{
  font-size:18px;
  margin-top:4px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.brief-text p{
  margin-top:6px;
  font-size:14px;
  color:var(--muted);
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.brief-time{
  flex:0 0 auto;
  align-self:flex-start;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  padding-top:4px;
}

/* ---------- Terms ---------- */
.term-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px 40px;
}
.term{
  padding:22px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--brand-light);
  border-radius:14px;
  transition:border-left-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.term:hover{
  border-left-color:var(--brand);
  box-shadow:var(--shadow-1);
  transform:translateY(-2px);
}
.term dt{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
}
.term dd{
  margin:0;
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- Picks ---------- */
.pick-card{
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(36,87,230,.3);}
.pick-media{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.pick-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.pick-card:hover .pick-media img{transform:scale(1.03);}
.pick-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.pick-body h3{font-size:18px;}
.pick-body h3 a{color:var(--text);}
.pick-body h3 a:hover{color:var(--brand);}
.pick-body p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.pick-foot{
  margin-top:auto;
  padding-top:8px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.pick-foot .arrow{color:var(--brand);font-weight:700;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.faq-item:hover{border-color:#C9D7F2;}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand),var(--shadow-1);border-color:#C9D7F2;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  list-style:none;
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-ico{
  flex:0 0 auto;
  width:20px;height:20px;
  position:relative;
  transition:transform .22s var(--ease);
  color:var(--brand);
}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-ico::before{left:9px;top:0;width:2px;height:20px;}
.faq-ico::after{top:9px;left:0;height:2px;width:20px;}
.faq-item[open] .faq-ico{transform:rotate(45deg);}
.faq-answer{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#EAF0FF,#F5F7FC);
  border-top:1px solid var(--line);
  padding:72px 0;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(36,87,230,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(36,87,230,.07) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-copy h2{max-width:16em;}
.cta-copy p{margin-top:14px;color:var(--muted);font-size:15.5px;max-width:38em;}
.cta-copy p + p{margin-top:8px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-foot{
  position:relative;
  background:var(--ink);
  color:#AFC0DC;
  padding:64px 0 28px;
  margin-top:0;
}
.site-foot::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 58%,var(--amber));
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.foot-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:#AFC0DC;
  max-width:24em;
}
.foot-title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:#E7EEFF;
  margin-bottom:16px;
}
.foot-links li{margin-bottom:10px;}
.foot-links a{
  color:#AFC0DC;
  font-size:14.5px;
  display:inline-flex;
  align-items:center;
  min-height:32px;
  transition:color .2s var(--ease);
}
.foot-links a:hover{color:var(--cyan);}
.foot-contact li{
  font-size:14px;
  margin-bottom:12px;
  line-height:1.7;
  color:#AFC0DC;
}
.foot-contact span{
  display:inline-block;
  min-width:40px;
  color:#E7EEFF;
  font-weight:600;
}
.foot-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:#8FA0BD;
}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;
    inset:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:96px 24px 40px;
    background:#0A1024;
    z-index:80;
    overflow-y:auto;
  }
  .main-nav.open{display:flex;}
  .main-nav a{
    font-size:18px;
    min-height:52px;
    padding:0 16px;
    color:#C9D4EA;
    border-radius:10px;
  }
  .main-nav a.active{
    background:rgba(53,230,208,.08);
    box-shadow:inset 3px 0 0 var(--cyan);
  }
  .hero-grid{grid-template-columns:1fr;gap:32px;padding-top:24px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .section{padding:56px 0;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media screen and (max-width:899px){
  .col-4,.col-6,.col-8{flex:0 0 100%;max-width:100%;}
  .featured-card{flex-direction:column;}
  .featured-media{min-height:0;aspect-ratio:16/10;width:100%;}
  .pick-grid > .cell{margin-bottom:20px;}
  .term-grid{grid-template-columns:1fr;gap:16px;}
}

@media screen and (max-width:640px){
  .shell{padding:0 16px;}
  .section{padding:48px 0;}
  .page-hero{padding-bottom:48px;}
  .head-inner{height:64px;gap:12px;}
  .brand-text{font-size:16px;}
  .head-actions .btn-sm{display:none;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  .hero-sub{font-size:16px;}
  .featured-body{padding:22px 20px;}
  .featured-body h3{font-size:20px;}
  .brief-row{flex-wrap:wrap;align-items:flex-start;padding:16px;gap:14px;}
  .brief-thumb{width:64px;height:64px;}
  .brief-text h3{white-space:normal;font-size:16px;}
  .brief-time{align-self:center;padding-top:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;}
}