:root{
  --bg:#f7f8fc;
  --bg-soft:#eef1f9;
  --bg-card:#ffffff;
  --text:#16182a;
  --text-soft:#5b6078;
  --line:#e2e6f2;
  --brand:#4a3aff;
  --brand-2:#ff4d9d;
  --brand-3:#00c2b8;
  --accent:#ff8a3d;
  --glass:rgba(255,255,255,.62);
  --glass-line:rgba(255,255,255,.55);
  --shadow:0 10px 34px rgba(22,24,42,.09);
  --shadow-hover:0 18px 48px rgba(74,58,255,.18);
  --radius:18px;
  --radius-sm:12px;
  --maxw:1180px;
  --grad-hero:linear-gradient(135deg,#4a3aff 0%,#7b4dff 38%,#ff4d9d 100%);
  --grad-soft:linear-gradient(160deg,rgba(74,58,255,.10),rgba(255,77,157,.08) 60%,rgba(0,194,184,.08));
}

html[data-theme="dark"]{
  --bg:#0d1020;
  --bg-soft:#141830;
  --bg-card:#181d33;
  --text:#eef1fb;
  --text-soft:#a4adc8;
  --line:#272e4c;
  --brand:#8b7dff;
  --brand-2:#ff7fb8;
  --brand-3:#3ee0d4;
  --accent:#ffa561;
  --glass:rgba(24,29,51,.62);
  --glass-line:rgba(255,255,255,.08);
  --shadow:0 10px 34px rgba(0,0,0,.5);
  --shadow-hover:0 18px 48px rgba(0,0,0,.62);
  --grad-hero:linear-gradient(135deg,#2a2470 0%,#4a2f86 40%,#7a2a5c 100%);
  --grad-soft:linear-gradient(160deg,rgba(139,125,255,.10),rgba(255,127,184,.08) 60%,rgba(62,224,212,.08));
}

*{margin:0;padding:0;box-sizing:border-box}

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

body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.85;
  font-size:16px;
  overflow-x:hidden;
  transition:background .35s ease,color .35s ease;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(60vw 60vw at 88% -8%,rgba(74,58,255,.13),transparent 62%),
    radial-gradient(50vw 50vw at 4% 22%,rgba(255,77,157,.10),transparent 60%),
    radial-gradient(46vw 46vw at 62% 96%,rgba(0,194,184,.09),transparent 62%);
  pointer-events:none;
}

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

a{color:var(--brand);text-decoration:none;transition:color .25s ease,opacity .25s ease}
a:hover{text-decoration:none;color:var(--brand-2)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

section{padding:76px 0;border-bottom:1px solid var(--line);position:relative}
section:last-of-type{border-bottom:none}

h1,h2,h3,h4{line-height:1.4;font-weight:800;letter-spacing:.2px;color:var(--text)}
h1{font-size:clamp(27px,4.2vw,44px)}
h2{font-size:clamp(22px,3vw,31px);margin-bottom:14px}
h3{font-size:clamp(18px,2.2vw,21px);margin:24px 0 10px}
h4{font-size:16px;margin:18px 0 8px;color:var(--brand)}
p{margin-bottom:14px;color:var(--text-soft)}
strong{color:var(--text)}

.lead{font-size:17px;color:var(--text);opacity:.92}

.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:2.4px;
  font-weight:800;
  text-transform:uppercase;
  margin-bottom:12px;
  padding:5px 14px;
  border-radius:999px;
  color:#fff;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  box-shadow:0 6px 18px rgba(74,58,255,.28);
}

.section-head{max-width:840px;margin-bottom:34px}

.skip{
  position:absolute;left:-9999px;top:0;
  background:var(--brand);color:#fff;padding:10px 16px;z-index:999;border-radius:0 0 10px 0;
}
.skip:focus{left:0;top:0}

/* ============ header ============ */
header.site{
  position:sticky;top:0;z-index:100;
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--line);
  transition:background .35s ease,border-color .35s ease;
}

.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}

.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:18px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand .logo{
  width:38px;height:38px;border-radius:12px;overflow:hidden;flex:none;
  box-shadow:0 6px 18px rgba(74,58,255,.35);
  transition:transform .35s cubic-bezier(.34,1.56,.64,1);
}
.brand:hover .logo{transform:rotate(-8deg) scale(1.06)}

.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{
  color:var(--text-soft);font-size:14.5px;font-weight:600;
  padding:8px 12px;border-radius:10px;position:relative;
  transition:color .25s ease,background .25s ease;
}
.nav-links a:hover{color:var(--brand);background:rgba(74,58,255,.08)}

.nav-tools{display:flex;align-items:center;gap:10px}

.icon-btn{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--bg-card);
  color:var(--text);cursor:pointer;
  display:grid;place-items:center;font-size:16px;
  transition:transform .3s cubic-bezier(.34,1.56,.64,1),border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:0 8px 20px rgba(74,58,255,.2)}
.icon-btn:active{transform:scale(.94)}

.search-box{
  display:flex;align-items:center;
  border:1px solid var(--line);border-radius:12px;
  background:var(--bg-card);overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(74,58,255,.14)}
.search-box input{
  border:none;background:transparent;color:var(--text);
  padding:9px 12px;width:160px;outline:none;font-size:14px;font-family:inherit;
}
.search-box input::placeholder{color:var(--text-soft);opacity:.75}
.search-box button{
  border:none;cursor:pointer;font-size:14px;font-family:inherit;font-weight:700;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  color:#fff;padding:9px 15px;
  transition:opacity .25s ease;
}
.search-box button:hover{opacity:.88}

.menu-toggle{display:none}

@media(max-width:980px){
  .nav-links{
    display:none;position:absolute;top:68px;left:0;right:0;
    background:var(--glass);
    -webkit-backdrop-filter:blur(18px) saturate(160%);
    backdrop-filter:blur(18px) saturate(160%);
    flex-direction:column;align-items:stretch;
    padding:14px 22px 20px;gap:4px;
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);
  }
  .nav-links.open{display:flex;animation:navDrop .32s ease both}
  .nav-links a{padding:11px 14px}
  .menu-toggle{display:grid}
  .search-box input{width:118px}
}
@keyframes navDrop{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ============ hero ============ */
.hero{
  padding:64px 0 58px;
  background:var(--grad-hero);
  border-bottom:none;
  position:relative;
  overflow:hidden;
  color:#fff;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(38vw 38vw at 82% 8%,rgba(255,255,255,.20),transparent 62%),
    radial-gradient(30vw 30vw at 10% 88%,rgba(255,255,255,.12),transparent 60%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:1}

.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr;gap:34px}}

.hero h1{color:#fff;text-shadow:0 4px 26px rgba(0,0,0,.18)}
.hero h1 span{
  background:linear-gradient(120deg,#fff 20%,#ffe0f0 60%,#d9fff9 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero .lead{color:rgba(255,255,255,.9);opacity:1}
.hero .eyebrow{
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
  box-shadow:none;
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}

.hero .badges{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0 24px}
.badge{
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
  color:#fff;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.26);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:transform .3s cubic-bezier(.34,1.56,.64,1),background .25s ease;
}
.badge:hover{transform:translateY(-3px);background:rgba(255,255,255,.24)}

.hero-cta{display:flex;gap:13px;flex-wrap:wrap;margin-top:8px}

.btn{
  display:inline-block;padding:12px 26px;border-radius:13px;
  font-weight:700;font-size:15px;cursor:pointer;
  border:1px solid transparent;
  transition:transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease,background .3s ease,border-color .3s ease,color .3s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-3px)}
.btn:active{transform:translateY(-1px) scale(.985)}

.btn-primary{
  background:#fff;color:#3a2ee0;
  box-shadow:0 12px 30px rgba(0,0,0,.22);
}
.btn-primary:hover{color:#2a1fd0;box-shadow:0 18px 40px rgba(0,0,0,.3)}

.btn-ghost{
  border-color:rgba(255,255,255,.5);
  color:#fff;background:rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff}

.hero-visual{position:relative}
.carousel{
  position:relative;border-radius:var(--radius);overflow:hidden;
  box-shadow:0 26px 60px rgba(0,0,0,.32);
  background:rgba(0,0,0,.2);
  border:1px solid rgba(255,255,255,.22);
}
.slides{display:flex;transition:transform .65s cubic-bezier(.65,0,.35,1)}
.slide{min-width:100%;aspect-ratio:4/3}
.slide svg{width:100%;height:100%}

.carousel-dots{
  position:absolute;bottom:14px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;z-index:2;
}
.dot{
  width:9px;height:9px;border-radius:999px;
  background:rgba(255,255,255,.55);
  border:none;cursor:pointer;padding:0;
  transition:width .35s ease,background .3s ease;
}
.dot.active{background:#fff;width:24px}
.dot:hover{background:rgba(255,255,255,.85)}

/* ============ stats ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:36px}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}

.stat{
  background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.24);
  border-radius:15px;
  padding:18px 14px;text-align:center;
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),background .3s ease;
}
.stat:hover{transform:translateY(-4px);background:rgba(255,255,255,.2)}
.stat .num{
  font-size:29px;font-weight:800;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.25;
  letter-spacing:.5px;
}
.stat .lbl{font-size:12.5px;color:rgba(255,255,255,.82);margin-top:2px}

/* ============ grid & cards ============ */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{
  position:relative;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow);
  transition:transform .38s cubic-bezier(.34,1.56,.64,1),box-shadow .38s ease,border-color .3s ease,background .35s ease;
  overflow:hidden;
}
.card::before{
  content:"";
  position:absolute;inset:0;
  background:var(--grad-soft);
  opacity:0;
  transition:opacity .38s ease;
  pointer-events:none;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(74,58,255,.35);
}
.card:hover::before{opacity:1}
.card > *{position:relative;z-index:1}

.card h3{margin-top:0}
.card p{margin-bottom:0;font-size:15px}
.card p + p{margin-top:12px}
.card h4{margin-top:16px}

.card .ico{
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(74,58,255,.16),rgba(255,77,157,.14));
  box-shadow:inset 0 0 0 1px rgba(74,58,255,.14);
  transition:transform .38s cubic-bezier(.34,1.56,.64,1);
}
.card:hover .ico{transform:rotate(-6deg) scale(1.08)}

/* ============ timeline ============ */
.timeline{position:relative;padding-left:28px;margin-top:14px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2),var(--brand-3));
  border-radius:2px;opacity:.55;
}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:8px;
  width:12px;height:12px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border:3px solid var(--bg);
  box-shadow:0 0 0 2px rgba(74,58,255,.22);
  transition:transform .3s ease;
}
.tl-item:hover::before{transform:scale(1.25)}
.tl-item .yr{font-weight:800;color:var(--brand);font-size:15px}
.tl-item p{margin-bottom:0;font-size:14.5px}

/* ============ table ============ */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--bg-card);
  box-shadow:var(--shadow);
  -webkit-overflow-scrolling:touch;
}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
th{
  background:var(--bg-soft);
  font-weight:800;color:var(--text);
  white-space:nowrap;
  position:sticky;top:0;
}
td{color:var(--text-soft)}
tbody tr{transition:background .25s ease}
tbody tr:hover{background:rgba(74,58,255,.055)}
tr:last-child td{border-bottom:none}

/* ============ articles ============ */
.article-card{display:flex;flex-direction:column;height:100%}
.article-card .meta{
  font-size:12.5px;color:var(--text-soft);
  margin-bottom:10px;display:flex;gap:12px;flex-wrap:wrap;align-items:center;
}
.article-card .meta span{position:relative}
.article-card .meta span + span::before{
  content:"";display:inline-block;width:4px;height:4px;border-radius:50%;
  background:var(--text-soft);opacity:.6;margin-right:12px;vertical-align:middle;
}
.article-card h3{font-size:18px;margin:0 0 10px;transition:color .25s ease}
.article-card:hover h3{color:var(--brand)}
.article-card p{font-size:14.5px;flex:1;margin-bottom:0}
.article-card .more{
  margin-top:16px;font-weight:700;font-size:14px;
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);
}
.article-card .more:hover{color:var(--brand-2);gap:10px}

/* ============ faq ============ */
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  background:var(--bg-card);
  overflow:hidden;
  box-shadow:0 4px 16px rgba(22,24,42,.04);
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.faq-item:hover{border-color:rgba(74,58,255,.32);box-shadow:0 10px 26px rgba(74,58,255,.10)}
.faq-item.open{border-color:rgba(74,58,255,.42);box-shadow:0 12px 30px rgba(74,58,255,.14)}

.faq-q{
  width:100%;text-align:left;background:transparent;border:none;
  padding:17px 20px;font-size:16px;font-weight:700;color:var(--text);
  cursor:pointer;display:flex;justify-content:space-between;gap:14px;align-items:center;
  font-family:inherit;line-height:1.6;
  transition:color .25s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q .sign{
  flex:none;width:26px;height:26px;border-radius:50%;
  background:linear-gradient(135deg,rgba(74,58,255,.16),rgba(255,77,157,.14));
  color:var(--brand);
  display:grid;place-items:center;font-weight:800;font-size:16px;
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),background .3s ease,color .3s ease;
}
.faq-item.open .sign{
  transform:rotate(135deg);
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .42s cubic-bezier(.65,0,.35,1)}
.faq-a p{padding:0 20px 18px;margin:0;font-size:15px}
.faq-item.open .faq-a{max-height:900px}

/* ============ steps ============ */
.steps{counter-reset:step;display:grid;gap:16px}

.step{
  position:relative;
  padding:20px 22px 20px 70px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:15px;
  box-shadow:0 4px 16px rgba(22,24,42,.04);
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow .35s ease,border-color .3s ease;
}
.step:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:rgba(74,58,255,.3)}
.step::before{
  counter-increment:step;
  content:counter(step);
  position:absolute;left:20px;top:20px;
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px;
  box-shadow:0 8px 20px rgba(74,58,255,.28);
}
.step h4{margin:0 0 6px;color:var(--text);font-size:16px}
.step p{margin:0;font-size:14.5px}

/* ============ contact ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:840px){.contact-grid{grid-template-columns:1fr}}

.info-list{list-style:none}
.info-list li{
  display:flex;gap:12px;padding:11px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;align-items:flex-start;
  transition:padding-left .28s ease;
}
.info-list li:hover{padding-left:5px}
.info-list li:last-child{border-bottom:none}
.info-list .k{color:var(--text-soft);min-width:92px;flex:none;font-weight:600}
.info-list .v{color:var(--text);font-weight:500;word-break:break-word}

/* ============ footer ============ */
footer.site{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  position:relative;
  overflow:hidden;
}
footer.site::before{
  content:"";
  position:absolute;top:-40%;right:-10%;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(74,58,255,.12),transparent 68%);
  pointer-events:none;
}

.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;position:relative}
@media(max-width:920px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr}}

footer h4{font-size:15px;margin-bottom:14px;color:var(--text);letter-spacing:.4px}
footer ul{list-style:none}
footer li{margin-bottom:9px;font-size:14px}
footer a{color:var(--text-soft);transition:color .25s ease,padding-left .25s ease}
footer a:hover{color:var(--brand);padding-left:4px}

.foot-bottom{
  margin-top:36px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-soft);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  position:relative;
}

/* ============ back to top ============ */
#toTop{
  position:fixed;right:22px;bottom:22px;
  width:48px;height:48px;border-radius:50%;
  border:none;cursor:pointer;font-size:18px;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 12px 30px rgba(74,58,255,.4);
  opacity:0;visibility:hidden;
  transform:translateY(14px) scale(.9);
  transition:opacity .35s ease,transform .35s cubic-bezier(.34,1.56,.64,1),visibility .35s;
  z-index:90;
}
#toTop.show{opacity:1;visibility:visible;transform:none}
#toTop:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 18px 40px rgba(74,58,255,.5)}

/* ============ reveal animation ============ */
.reveal{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .7s cubic-bezier(.25,.8,.35,1),transform .7s cubic-bezier(.25,.8,.35,1);
  will-change:opacity,transform;
}
.reveal.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
}

/* ============ misc ============ */
.note{
  background:linear-gradient(120deg,rgba(0,194,184,.10),rgba(74,58,255,.07));
  border-left:4px solid var(--brand-3);
  padding:18px 22px;
  border-radius:0 14px 14px 0;
  font-size:15px;color:var(--text);
  box-shadow:0 6px 20px rgba(0,194,184,.08);
}
.note strong{color:var(--brand-3)}

.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.anchor-nav a{
  font-size:14px;font-weight:600;
  padding:8px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--bg-card);
  color:var(--text-soft);
  transition:transform .3s cubic-bezier(.34,1.56,.64,1),border-color .25s ease,color .25s ease,box-shadow .25s ease;
}
.anchor-nav a:hover{
  border-color:var(--brand);color:var(--brand);
  transform:translateY(-3px);
  box-shadow:0 8px 20px rgba(74,58,255,.16);
}

blockquote{
  border-left:4px solid var(--brand-2);
  padding:8px 0 8px 20px;
  margin:18px 0;
  color:var(--text-soft);
  font-style:normal;
  font-size:15px;
  line-height:1.9;
}
blockquote.card{border-left:4px solid var(--brand-2);padding:26px}

.tag{
  display:inline-block;font-size:12px;font-weight:700;
  padding:4px 12px;border-radius:8px;
  background:linear-gradient(120deg,rgba(74,58,255,.12),rgba(255,77,157,.10));
  color:var(--brand);
  border:1px solid rgba(74,58,255,.18);
  margin:0 6px 10px 0;
}

/* ============ responsive fine-tuning ============ */
@media(max-width:900px){
  section{padding:58px 0}
  .hero{padding:48px 0 44px}
}

@media(max-width:640px){
  body{font-size:15.5px;line-height:1.8}
  .wrap{padding:0 16px}
  section{padding:48px 0}
  .hero{padding:38px 0 36px}
  .nav{height:62px}
  .nav-links{top:62px}
  .brand{font-size:16px}
  .brand .logo{width:34px;height:34px}
  .search-box input{width:88px;padding:8px 9px}
  .search-box button{padding:8px 11px}
  .icon-btn{width:36px;height:36px}
  .stats{grid-template-columns:repeat(2,1fr);gap:10px;margin-top:28px}
  .stat .num{font-size:24px}
  .stat .lbl{font-size:11.5px}
  .card{padding:20px;border-radius:16px}
  .step{padding:18px 18px 18px 62px}
  .step::before{left:16px;top:18px;width:32px;height:32px;font-size:14px}
  .faq-q{font-size:15px;padding:15px 16px}
  .faq-a p{padding:0 16px 16px;font-size:14.5px}
  .btn{padding:11px 20px;font-size:14.5px}
  .hero-cta{gap:10px}
  #toTop{right:14px;bottom:14px;width:44px;height:44px}
  .foot-bottom{flex-direction:column;gap:8px}
  th,td{padding:12px 14px;font-size:14px}
}

@media(max-width:420px){
  .search-box{display:none}
  .hero .badges{gap:7px}
  .badge{font-size:12px;padding:5px 11px}
}

/* focus visibility for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:8px;
}

/* selection */
::selection{background:rgba(74,58,255,.22);color:var(--text)}

/* scrollbar (webkit) */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-soft)}
::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  border-radius:999px;
  border:2px solid var(--bg-soft);
}
::-webkit-scrollbar-thumb:hover{opacity:.85}

/* print */
@media print{
  header.site,#toTop,.carousel-dots,.search-box,.icon-btn,.hero-cta,.anchor-nav{display:none !important}
  body{background:#fff;color:#000}
  .card,.step,.faq-item,.table-wrap{box-shadow:none;border:1px solid #ccc}
  .reveal{opacity:1;transform:none}
  section{padding:20px 0;page-break-inside:avoid}
}