:root{
  --brand:#1f6feb;
  --brand-2:#0ea5a4;
  --brand-3:#7c3aed;
  --accent:#f59e0b;
  --bg:#f7f9fc;
  --bg-grad-1:#eef4ff;
  --bg-grad-2:#f7f9fc;
  --card:#ffffff;
  --card-glass:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.55);
  --text:#1a2233;
  --muted:#5b667a;
  --line:#e3e8f0;
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:22px;
  --shadow:0 6px 24px rgba(20,40,80,.08);
  --shadow-hover:0 14px 38px rgba(20,40,80,.16);
  --shadow-glass:0 8px 32px rgba(31,111,235,.12);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:62px;
}

*{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 16px);
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background-color .35s var(--ease),color .35s var(--ease);
  overflow-x:hidden;
}

img,svg{max-width:100%;display:block}

a{
  color:var(--brand);
  text-decoration:none;
  transition:color .25s var(--ease),opacity .25s var(--ease);
}

a:hover{text-decoration:underline}

::selection{background:rgba(31,111,235,.18);color:var(--text)}

:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}

.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 20px;
}

header.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--card-glass);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  backdrop-filter:blur(16px) saturate(1.4);
  border-bottom:1px solid var(--line);
  transition:background-color .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
}

header.site-header:hover{box-shadow:0 4px 20px rgba(20,40,80,.06)}

.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  min-height:var(--header-h);
}

.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:20px;
  color:var(--text);
  letter-spacing:.2px;
  transition:transform .3s var(--ease);
}

.logo:hover{text-decoration:none;transform:translateY(-1px)}

.logo .mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 55%,var(--brand-3) 100%);
  background-size:200% 200%;
  display:grid;
  place-items:center;
  color:#fff;
  font-size:15px;
  font-weight:800;
  box-shadow:0 4px 14px rgba(31,111,235,.35);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),background-position .6s var(--ease);
}

.logo:hover .mark{
  transform:rotate(-6deg) scale(1.06);
  background-position:100% 100%;
  box-shadow:0 6px 20px rgba(31,111,235,.5);
}

nav.main-nav ul{
  display:flex;
  gap:4px;
  list-style:none;
  margin:0;
  padding:0;
  flex-wrap:wrap;
}

nav.main-nav a{
  display:inline-block;
  padding:8px 12px;
  border-radius:9px;
  color:var(--text);
  font-size:15px;
  position:relative;
  transition:background-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}

nav.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--ease);
}

nav.main-nav a:hover{
  background:rgba(31,111,235,.08);
  text-decoration:none;
  color:var(--brand);
  transform:translateY(-1px);
}

nav.main-nav a:hover::after{transform:scaleX(1)}

.nav-tools{
  display:flex;
  align-items:center;
  gap:8px;
}

.search-box{
  display:flex;
  align-items:center;
  border:1px solid var(--line);
  border-radius:11px;
  padding:4px 4px 4px 10px;
  background:var(--card-glass);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}

.search-box:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,111,235,.14);
}

.search-box input{
  border:0;
  outline:0;
  font-size:14px;
  width:130px;
  background:transparent;
  color:var(--text);
  font-family:inherit;
}

.search-box input::placeholder{color:var(--muted);opacity:.8}

.btn{
  border:1px solid var(--line);
  background:var(--card);
  color:var(--text);
  border-radius:10px;
  padding:8px 12px;
  font-size:14px;
  font-family:inherit;
  cursor:pointer;
  transition:border-color .25s var(--ease),color .25s var(--ease),background-color .25s var(--ease),transform .2s var(--ease),box-shadow .25s var(--ease);
}

.btn:hover{
  border-color:var(--brand);
  color:var(--brand);
  transform:translateY(-1px);
  box-shadow:0 4px 14px rgba(31,111,235,.12);
}

.btn:active{transform:translateY(0) scale(.98)}

.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,#3b82f6 50%,var(--brand-2) 100%);
  background-size:160% 160%;
  color:#fff;
  border-color:transparent;
  font-weight:600;
  box-shadow:0 4px 16px rgba(31,111,235,.3);
  transition:background-position .5s var(--ease),transform .25s var(--ease),box-shadow .3s var(--ease);
}

.btn-primary:hover{
  background-position:100% 100%;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 8px 26px rgba(31,111,235,.42);
}

.btn-primary:active{transform:translateY(0) scale(.98)}

.menu-toggle{display:none}

.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:linear-gradient(160deg,#eef4ff 0%,#f3f0ff 48%,#f7f9fc 100%);
  transition:background .4s var(--ease);
}

.hero::before{
  content:"";
  position:absolute;
  top:-140px;
  right:-120px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,111,235,.18) 0%,rgba(14,165,164,.10) 45%,transparent 70%);
  filter:blur(8px);
  pointer-events:none;
  animation:floatOrb 14s ease-in-out infinite alternate;
}

.hero::after{
  content:"";
  position:absolute;
  bottom:-160px;
  left:-100px;
  width:380px;
  height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(124,58,237,.14) 0%,rgba(31,111,235,.08) 45%,transparent 70%);
  filter:blur(10px);
  pointer-events:none;
  animation:floatOrb 18s ease-in-out infinite alternate-reverse;
}

@keyframes floatOrb{
  0%{transform:translate(0,0) scale(1)}
  100%{transform:translate(-26px,24px) scale(1.08)}
}

.hero-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:36px;
  align-items:center;
  padding:56px 0;
}

.hero h1{
  font-size:34px;
  line-height:1.32;
  margin:0 0 14px;
  letter-spacing:-.3px;
  background:linear-gradient(120deg,var(--text) 0%,#243b6b 55%,var(--brand) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:var(--text);
}

.hero p.lead{
  color:var(--muted);
  font-size:17px;
  margin:0 0 22px;
  max-width:56ch;
}

.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.hero-actions .btn{padding:11px 20px;font-size:15px}

.hero-visual{position:relative}

.hero-visual svg{border-radius:18px;box-shadow:var(--shadow)}

.slider{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--card-glass);
  -webkit-backdrop-filter:blur(18px) saturate(1.5);
  backdrop-filter:blur(18px) saturate(1.5);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-glass);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}

.slider:hover{
  transform:translateY(-3px);
  box-shadow:0 18px 46px rgba(31,111,235,.2);
}

.slides{
  display:flex;
  transition:transform .55s var(--ease);
  will-change:transform;
}

.slide{
  min-width:100%;
  padding:26px 24px;
}

.slide h3{
  margin:0 0 8px;
  font-size:18px;
  line-height:1.45;
  color:var(--text);
}

.slide p{
  margin:0;
  color:var(--muted);
  font-size:14.5px;
}

.slider-dots{
  display:flex;
  gap:8px;
  justify-content:center;
  padding:10px 0 16px;
}

.slider-dots button{
  width:9px;
  height:9px;
  border-radius:50%;
  border:0;
  background:#c9d4e6;
  cursor:pointer;
  padding:0;
  transition:background-color .3s var(--ease),width .3s var(--ease),border-radius .3s var(--ease);
}

.slider-dots button:hover{background:#9fb3d1}

.slider-dots button.active{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  width:24px;
  border-radius:5px;
}

.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  padding:26px 0;
}

.stat{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 16px;
  text-align:center;
  position:relative;
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}

.stat::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2),var(--brand-3));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .4s var(--ease);
}

.stat:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(31,111,235,.35);
}

.stat:hover::before{transform:scaleX(1)}

.stat .num{
  font-size:28px;
  font-weight:800;
  color:var(--brand);
  letter-spacing:-.5px;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}

.stat .label{
  font-size:13px;
  color:var(--muted);
  margin-top:2px;
}

section{
  padding:44px 0;
  position:relative;
}

.section-head{margin-bottom:24px}

.section-head h2{
  font-size:26px;
  margin:0 0 8px;
  line-height:1.35;
  letter-spacing:-.2px;
  position:relative;
  display:inline-block;
  padding-bottom:10px;
}

.section-head h2::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:46px;
  height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}

.section-head p{
  color:var(--muted);
  margin:0;
  max-width:70ch;
}

.grid{display:grid;gap:18px}

.grid-3{grid-template-columns:repeat(3,1fr)}

.grid-2{grid-template-columns:repeat(2,1fr)}

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:0 2px 10px rgba(20,40,80,.03);
  position:relative;
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}

.card::after{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%),rgba(31,111,235,.07),transparent 45%);
  opacity:0;
  transition:opacity .4s var(--ease);
  pointer-events:none;
}

.card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(31,111,235,.3);
}

.card:hover::after{opacity:1}

.card h3{
  margin:0 0 8px;
  font-size:18px;
  line-height:1.45;
  transition:color .25s var(--ease);
}

.card:hover h3{color:var(--brand)}

.card p{
  color:var(--muted);
  margin:0;
  font-size:15px;
}

.article-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}

.article-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
  position:relative;
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}

.article-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .4s var(--ease);
}

.article-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(31,111,235,.3);
}

.article-card:hover::before{transform:scaleY(1)}

.article-card h3{
  margin:0 0 6px;
  font-size:17px;
  line-height:1.5;
  transition:color .25s var(--ease);
}

.article-card:hover h3{color:var(--brand)}

.meta{
  font-size:13px;
  color:var(--muted);
  margin-bottom:8px;
  opacity:.9;
}

.article-card p{
  color:var(--muted);
  font-size:14px;
  margin:0 0 12px;
}

.readmore{
  font-size:14px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:gap .25s var(--ease),color .25s var(--ease);
}

.readmore::after{
  content:"→";
  transition:transform .3s var(--ease);
}

.readmore:hover{text-decoration:none;gap:8px}

.readmore:hover::after{transform:translateX(3px)}

.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--card);
  margin-bottom:10px;
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}

.faq-item:hover{
  border-color:rgba(31,111,235,.35);
  box-shadow:0 4px 16px rgba(31,111,235,.08);
}

.faq-item.open{
  border-color:rgba(31,111,235,.45);
  box-shadow:0 6px 22px rgba(31,111,235,.12);
}

.faq-q{
  width:100%;
  text-align:left;
  background:transparent;
  border:0;
  padding:16px 18px;
  font-size:16px;
  font-weight:600;
  font-family:inherit;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  color:var(--text);
  transition:color .25s var(--ease),background-color .25s var(--ease);
}

.faq-q:hover{color:var(--brand);background:rgba(31,111,235,.04)}

.faq-q span{
  flex:0 0 auto;
  width:24px;
  height:24px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:rgba(31,111,235,.1);
  color:var(--brand);
  font-weight:700;
  font-size:16px;
  line-height:1;
  transition:transform .35s var(--ease),background-color .3s var(--ease),color .3s var(--ease);
}

.faq-item.open .faq-q span{
  background:var(--brand);
  color:#fff;
  transform:rotate(180deg);
}

.faq-a{
  padding:0 18px 16px;
  color:var(--muted);
  font-size:15px;
  display:none;
  animation:fadeSlide .35s var(--ease);
}

.faq-item.open .faq-a{display:block}

@keyframes fadeSlide{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}

.timeline{
  position:relative;
  padding-left:26px;
}

.timeline::before{
  content:"";
  position:absolute;
  left:8px;
  top:4px;
  bottom:4px;
  width:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2),transparent);
  border-radius:2px;
}

.timeline-item{
  position:relative;
  margin-bottom:20px;
  padding:14px 16px;
  border-radius:var(--radius-sm);
  background:var(--card);
  border:1px solid var(--line);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}

.timeline-item::before{
  content:"";
  position:absolute;
  left:-23px;
  top:20px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(31,111,235,.15);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}

.timeline-item:hover{
  transform:translateX(4px);
  box-shadow:var(--shadow);
  border-color:rgba(31,111,235,.3);
}

.timeline-item:hover::before{
  transform:scale(1.2);
  box-shadow:0 0 0 6px rgba(31,111,235,.18);
}

.timeline-item h3{
  margin:0 0 4px;
  font-size:16px;
  line-height:1.5;
}

.timeline-item p{
  margin:0;
  color:var(--muted);
  font-size:14px;
}

.steps{counter-reset:step}

.step{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:16px 16px 16px 58px;
  margin-bottom:12px;
  position:relative;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}

.step:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow);
  border-color:rgba(31,111,235,.3);
}

.step::before{
  counter-increment:step;
  content:counter(step);
  position:absolute;
  left:16px;
  top:16px;
  width:30px;
  height:30px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;
  display:grid;
  place-items:center;
  font-weight:700;
  font-size:14px;
  box-shadow:0 4px 12px rgba(31,111,235,.3);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}

.step:hover::before{
  transform:scale(1.1) rotate(-6deg);
  box-shadow:0 6px 18px rgba(31,111,235,.42);
}

.step h3{
  margin:0 0 4px;
  font-size:16px;
  line-height:1.5;
}

.step p{
  margin:0;
  color:var(--muted);
  font-size:14px;
}

.breadcrumb{
  font-size:13px;
  color:var(--muted);
  padding:14px 0;
}

.breadcrumb a{color:var(--muted);transition:color .25s var(--ease)}

.breadcrumb a:hover{color:var(--brand);text-decoration:none}

.breadcrumb span{margin:0 6px;opacity:.6}

.breadcrumb strong{color:var(--text);font-weight:600}

.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}

.contact-item{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:16px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}

.contact-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow);
  border-color:rgba(31,111,235,.3);
}

.contact-item svg{
  flex:0 0 24px;
  transition:transform .3s var(--ease);
}

.contact-item:hover svg{transform:scale(1.12)}

.contact-item strong{
  display:block;
  font-size:15px;
  margin-bottom:2px;
}

.contact-item span{
  font-size:14px;
  color:var(--muted);
  word-break:break-word;
}

footer.site-footer{
  background:linear-gradient(160deg,#0f172a 0%,#111c33 60%,#0b1220 100%);
  color:#c7d2e4;
  padding:48px 0 20px;
  margin-top:20px;
  position:relative;
  overflow:hidden;
}

footer.site-footer::before{
  content:"";
  position:absolute;
  top:-120px;
  right:-80px;
  width:340px;
  height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,111,235,.22),transparent 68%);
  filter:blur(10px);
  pointer-events:none;
}

footer.site-footer a{
  color:#c7d2e4;
  transition:color .25s var(--ease),padding-left .25s var(--ease);
}

footer.site-footer a:hover{color:#fff;text-decoration:none}

.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:26px;
  position:relative;
  z-index:1;
}

.footer-grid h4{
  color:#fff;
  font-size:15px;
  margin:0 0 12px;
  position:relative;
  padding-bottom:8px;
}

.footer-grid h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:26px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}

.footer-grid p{
  margin:0;
  font-size:14px;
  color:#9fb0c8;
  line-height:1.8;
}

.footer-grid ul{
  list-style:none;
  margin:0;
  padding:0;
}

.footer-grid li{
  margin-bottom:8px;
  font-size:14px;
}

.footer-grid li a{display:inline-block}

.footer-grid li a:hover{transform:translateX(3px);color:#fff}

.footer-bottom{
  border-top:1px solid rgba(148,163,184,.18);
  margin-top:28px;
  padding-top:16px;
  font-size:13px;
  color:#8fa1bd;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}

.back-top{
  position:fixed;
  right:22px;
  bottom:22px;
  width:46px;
  height:46px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;
  border:0;
  cursor:pointer;
  display:none;
  place-items:center;
  font-size:18px;
  box-shadow:0 8px 24px rgba(31,111,235,.4);
  z-index:120;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),opacity .3s var(--ease);
}

.back-top:hover{
  transform:translateY(-4px) scale(1.06);
  box-shadow:0 12px 32px rgba(31,111,235,.55);
}

.back-top:active{transform:scale(.95)}

.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  will-change:opacity,transform;
}

.reveal.visible{
  opacity:1;
  transform:none;
}

section.reveal > .container > .grid > *,
section.reveal > .container > .article-list > *,
section.reveal > .container > .steps > *,
section.reveal > .container > .timeline > *{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}

section.reveal.visible > .container > .grid > *,
section.reveal.visible > .container > .article-list > *,
section.reveal.visible > .container > .steps > *,
section.reveal.visible > .container > .timeline > *{
  opacity:1;
  transform:none;
}

section.reveal.visible > .container > .grid > *:nth-child(1),
section.reveal.visible > .container > .article-list > *:nth-child(1),
section.reveal.visible > .container > .steps > *:nth-child(1),
section.reveal.visible > .container > .timeline > *:nth-child(1){transition-delay:.04s}
section.reveal.visible > .container > .grid > *:nth-child(2),
section.reveal.visible > .container > .article-list > *:nth-child(2),
section.reveal.visible > .container > .steps > *:nth-child(2),
section.reveal.visible > .container > .timeline > *:nth-child(2){transition-delay:.08s}
section.reveal.visible > .container > .grid > *:nth-child(3),
section.reveal.visible > .container > .article-list > *:nth-child(3),
section.reveal.visible > .container > .steps > *:nth-child(3),
section.reveal.visible > .container > .timeline > *:nth-child(3){transition-delay:.12s}
section.reveal.visible > .container > .grid > *:nth-child(4),
section.reveal.visible > .container > .article-list > *:nth-child(4),
section.reveal.visible > .container > .steps > *:nth-child(4),
section.reveal.visible > .container > .timeline > *:nth-child(4){transition-delay:.16s}
section.reveal.visible > .container > .grid > *:nth-child(5),
section.reveal.visible > .container > .article-list > *:nth-child(5),
section.reveal.visible > .container > .steps > *:nth-child(5),
section.reveal.visible > .container > .timeline > *:nth-child(5){transition-delay:.2s}
section.reveal.visible > .container > .grid > *:nth-child(6),
section.reveal.visible > .container > .article-list > *:nth-child(6),
section.reveal.visible > .container > .steps > *:nth-child(6),
section.reveal.visible > .container > .timeline > *:nth-child(6){transition-delay:.24s}
section.reveal.visible > .container > .article-list > *:nth-child(7){transition-delay:.28s}
section.reveal.visible > .container > .article-list > *:nth-child(8){transition-delay:.32s}
section.reveal.visible > .container > .article-list > *:nth-child(9){transition-delay:.36s}
section.reveal.visible > .container > .article-list > *:nth-child(10){transition-delay:.4s}

body.dark{
  --bg:#0b1220;
  --bg-grad-1:#0e1728;
  --bg-grad-2:#0b1220;
  --card:#111a2b;
  --card-glass:rgba(17,26,43,.72);
  --glass-border:rgba(148,163,184,.16);
  --text:#e6edf7;
  --muted:#9fb0c8;
  --line:#22304a;
  --shadow:0 6px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 38px rgba(0,0,0,.45);
  --shadow-glass:0 8px 32px rgba(0,0,0,.4);
}

body.dark header.site-header{background:rgba(11,18,32,.82)}

body.dark .search-box,
body.dark .btn,
body.dark .faq-q,
body.dark .faq-item,
body.dark .step,
body.dark .contact-item,
body.dark .card,
body.dark .article-card,
body.dark .stat,
body.dark .timeline-item{
  background:var(--card);
  color:var(--text);
}

body.dark .hero{
  background:linear-gradient(160deg,#0e1728 0%,#121a33 48%,#0b1220 100%);
}

body.dark .hero h1{
  background:linear-gradient(120deg,#e6edf7 0%,#b8c9e6 55%,#5b9bff 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

body.dark .slider-dots button{background:#334155}

body.dark .slider-dots button.active{background:linear-gradient(90deg,var(--brand),var(--brand-2))}

body.dark .faq-q:hover{background:rgba(31,111,235,.1)}

body.dark .card::after{background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%),rgba(59,130,246,.12),transparent 45%)}

body.dark footer.site-footer{
  background:linear-gradient(160deg,#070c16 0%,#0a1220 60%,#060a12 100%);
}

body.dark .back-top{box-shadow:0 8px 24px rgba(0,0,0,.5)}

body.dark ::selection{background:rgba(59,130,246,.3);color:#fff}

@media (max-width:1080px){
  .hero h1{font-size:30px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}

@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:44px 0}
  .hero h1{font-size:28px}
  .grid-3,
  .article-list,
  .grid-2,
  .contact-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}

  nav.main-nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    background:var(--card-glass);
    -webkit-backdrop-filter:blur(20px) saturate(1.5);
    backdrop-filter:blur(20px) saturate(1.5);
    border-bottom:1px solid var(--line);
    padding:10px 16px 14px;
    box-shadow:0 12px 30px rgba(20,40,80,.12);
    animation:navDrop .3s var(--ease);
  }

  @keyframes navDrop{
    from{opacity:0;transform:translateY(-8px)}
    to{opacity:1;transform:none}
  }

  body.dark nav.main-nav{background:rgba(17,26,43,.92)}

  nav.main-nav.open{display:block}

  nav.main-nav ul{flex-direction:column;gap:2px}

  nav.main-nav a{padding:10px 12px;width:100%}

  nav.main-nav a::after{display:none}

  .menu-toggle{display:inline-flex}

  .search-box input{width:100px}

  .section-head h2{font-size:23px}

  section{padding:36px 0}
}

@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .hero-actions .btn{flex:1 1 auto;text-align:center;justify-content:center}
}

@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:24px;line-height:1.36}
  .hero p.lead{font-size:15.5px}
  .stats{grid-template-columns:1fr 1fr;gap:12px}
  .stat{padding:16px 12px}
  .stat .num{font-size:24px}
  .card,.article-card{padding:18px}
  .slider-dots button.active{width:20px}
  .search-box input{width:78px}
  .btn{padding:7px 10px;font-size:13px}
  .back-top{right:14px;bottom:14px;width:42px;height:42px}
  .section-head h2{font-size:21px}
  .faq-q{font-size:15px;padding:14px 14px}
  .faq-a{padding:0 14px 14px}
}

@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
  section.reveal > .container > .grid > *,
  section.reveal > .container > .article-list > *,
  section.reveal > .container > .steps > *,
  section.reveal > .container > .timeline > *{opacity:1;transform:none}
}

@media print{
  header.site-header,
  .back-top,
  .slider-dots,
  .hero-actions,
  .nav-tools{display:none !important}
  body{background:#fff;color:#000}
  .card,.article-card,.step,.faq-item,.contact-item{box-shadow:none;border-color:#ccc}
  .reveal{opacity:1;transform:none}
}