:root{
  --ink:#12172b;
  --ink-soft:#3d4460;
  --muted:#6b7290;
  --line:rgba(24,32,64,.10);
  --brand:#4b3cff;
  --brand-2:#00b8d4;
  --brand-3:#ff4d9d;
  --brand-4:#7ee0ff;
  --bg:#f6f7ff;
  --card:#ffffff;
  --radius:18px;
  --shadow:0 18px 48px -28px rgba(35,32,110,.45);
  --container:1180px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1100px 520px at 8% -6%, rgba(75,60,255,.16), transparent 60%),
    radial-gradient(900px 500px at 96% 4%, rgba(0,184,212,.16), transparent 62%),
    radial-gradient(1000px 700px at 50% 42%, rgba(255,77,157,.07), transparent 65%),
    linear-gradient(180deg,#f8f9ff 0%, #f2f4ff 46%, #f7f8ff 100%);
  background-attachment:fixed;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:70px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand .ai-page-logo{height:36px;width:auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;letter-spacing:.5px;}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:1.4px;}
.nav-wrap{display:flex;align-items:center;gap:14px;}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;}
.nav-links a{
  display:block;padding:8px 12px;font-size:14px;color:var(--ink-soft);
  border-radius:10px;transition:color .25s, background .25s;
}
.nav-links a:hover{color:var(--brand);background:rgba(75,60,255,.08);}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(100deg,#4b3cff,#7a5cff 45%,#00b8d4);
  box-shadow:0 12px 26px -14px rgba(75,60,255,.9);
  transition:transform .25s, box-shadow .25s, filter .25s;
  white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 18px 32px -14px rgba(75,60,255,.95);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.3s;}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.open span:nth-child(2){opacity:0;}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== hero ===== */
.hero{position:relative;overflow:hidden;padding:66px 0 60px;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 320px at 82% 12%, rgba(0,184,212,.22), transparent 70%),
    radial-gradient(520px 340px at 12% 78%, rgba(255,77,157,.16), transparent 70%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;letter-spacing:.6px;
  color:#2c2b7a;background:linear-gradient(90deg,rgba(75,60,255,.14),rgba(0,184,212,.14));
  border:1px solid rgba(75,60,255,.2);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:linear-gradient(90deg,#4b3cff,#00b8d4);display:block;}
.hero h1{
  margin:20px 0 16px;font-size:clamp(30px,4.4vw,50px);line-height:1.18;letter-spacing:-.5px;
}
.hero h1 .grad{
  background:linear-gradient(96deg,#4b3cff 8%,#8a4dff 46%,#00b8d4 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:16px;color:var(--ink-soft);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:14px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .25s, box-shadow .25s, background .25s, color .25s;
}
.btn-primary{
  color:#fff;background:linear-gradient(100deg,#4b3cff,#7a5cff 48%,#00b8d4);
  box-shadow:0 18px 34px -18px rgba(75,60,255,.95);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 24px 42px -18px rgba(75,60,255,1);}
.btn-ghost{
  color:#231f6b;background:rgba(255,255,255,.86);border-color:rgba(75,60,255,.28);
}
.btn-ghost:hover{transform:translateY(-3px);background:#fff;box-shadow:0 16px 30px -22px rgba(35,32,110,.8);}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px;}
.hero-tags span{
  font-size:12.5px;padding:6px 12px;border-radius:999px;color:#33306e;
  background:rgba(255,255,255,.75);border:1px solid rgba(75,60,255,.16);
}
.hero-panel{
  position:relative;border-radius:24px;padding:26px;
  background:linear-gradient(155deg,rgba(255,255,255,.96),rgba(244,246,255,.9));
  border:1px solid rgba(75,60,255,.16);
  box-shadow:var(--shadow);
}
.hero-panel::after{
  content:"";position:absolute;inset:-1px;border-radius:25px;pointer-events:none;
  background:linear-gradient(130deg,rgba(75,60,255,.35),rgba(0,184,212,.28),rgba(255,77,157,.28));
  -webkit-mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  -webkit-mask-composite:xor;mask-composite:exclude;padding:1px;
}
.panel-title{font-size:13px;letter-spacing:1.6px;color:var(--muted);}
.panel-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px;}
.stat{
  padding:14px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);
  transition:transform .3s, box-shadow .3s;
}
.stat:hover{transform:translateY(-3px);box-shadow:0 16px 30px -22px rgba(35,32,110,.8);}
.stat b{display:block;font-size:20px;letter-spacing:-.4px;color:#221f6d;}
.stat small{font-size:12px;color:var(--muted);}
.panel-models{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px;}
.panel-models em{
  font-style:normal;font-size:11.5px;padding:4px 9px;border-radius:8px;
  color:#2b2a70;background:rgba(75,60,255,.08);border:1px solid rgba(75,60,255,.14);
}

/* ===== sections ===== */
section{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:34px;}
.sec-kicker{
  font-size:12.5px;letter-spacing:2.4px;color:#4b3cff;font-weight:600;text-transform:uppercase;
}
.sec-head h2{
  margin-top:10px;font-size:clamp(23px,3vw,32px);line-height:1.3;letter-spacing:-.3px;
}
.sec-head p{margin-top:12px;color:var(--ink-soft);font-size:15px;}

/* feature cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:0 10px 30px -26px rgba(35,32,110,.7);
  transition:transform .3s, box-shadow .3s, border-color .3s;
  display:flex;flex-direction:column;gap:10px;
}
.card:hover{transform:translateY(-5px);box-shadow:0 26px 46px -30px rgba(35,32,110,.85);border-color:rgba(75,60,255,.3);}
.card h3{font-size:17px;letter-spacing:-.2px;}
.card p{font-size:14px;color:var(--ink-soft);}
.card .tag{
  align-self:flex-start;font-size:11.5px;letter-spacing:.6px;color:#3a348f;
  background:linear-gradient(90deg,rgba(75,60,255,.1),rgba(0,184,212,.1));
  border:1px solid rgba(75,60,255,.16);padding:3px 10px;border-radius:999px;
}
.icon-badge{
  width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(75,60,255,.16),rgba(0,184,212,.16));
  border:1px solid rgba(75,60,255,.2);color:#3b33a8;font-weight:700;font-size:15px;
}

/* scenario chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chips span{
  font-size:13px;padding:8px 15px;border-radius:999px;color:#2f2c72;background:#fff;
  border:1px solid var(--line);transition:.25s;cursor:default;
}
.chips span:hover{color:#fff;background:linear-gradient(100deg,#4b3cff,#00b8d4);border-color:transparent;transform:translateY(-2px);}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:0 10px 30px -26px rgba(35,32,110,.7);
}
.step .num{
  font-size:13px;font-weight:700;color:#fff;width:30px;height:30px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#4b3cff,#00b8d4);margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:6px;}
.step p{font-size:13.5px;color:var(--ink-soft);}

/* about */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start;}
.about-list{display:grid;gap:12px;margin-top:18px;}
.about-item{
  display:flex;gap:12px;padding:15px 16px;border-radius:14px;background:#fff;border:1px solid var(--line);
  transition:transform .3s, box-shadow .3s;
}
.about-item:hover{transform:translateX(4px);box-shadow:0 16px 30px -26px rgba(35,32,110,.8);}
.about-item i{
  flex:none;width:10px;height:10px;margin-top:9px;border-radius:3px;
  background:linear-gradient(140deg,#4b3cff,#00b8d4);
}
.about-item b{display:block;font-size:15px;}
.about-item span{font-size:13.5px;color:var(--ink-soft);}
.media-card{
  border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);padding:14px;
}
.media-card img{border-radius:12px;width:100%;object-fit:cover;}
.media-card figcaption{font-size:12.5px;color:var(--muted);padding:10px 4px 2px;}
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}

/* table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);}
table{width:100%;border-collapse:collapse;min-width:720px;font-size:14px;}
thead th{
  text-align:left;padding:15px 18px;font-size:13px;letter-spacing:.6px;color:#2b2a70;
  background:linear-gradient(90deg,rgba(75,60,255,.1),rgba(0,184,212,.1));
  border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:14px 18px;border-bottom:1px solid rgba(24,32,64,.06);color:var(--ink-soft);vertical-align:top;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover td{background:rgba(75,60,255,.035);}
tbody td:first-child{color:var(--ink);font-weight:600;}
.score-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;color:#1c8a5a;background:rgba(28,138,90,.12);border:1px solid rgba(28,138,90,.24);
}
.stars{color:#ff9d1f;letter-spacing:2px;font-size:14px;}

/* rating block */
.rating-panel{
  display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;
  padding:26px;border-radius:22px;background:linear-gradient(120deg,rgba(75,60,255,.1),rgba(0,184,212,.08));
  border:1px solid rgba(75,60,255,.18);margin-bottom:22px;
}
.rating-score{text-align:center;padding-right:26px;border-right:1px dashed rgba(75,60,255,.28);}
.rating-score b{display:block;font-size:44px;line-height:1;letter-spacing:-1.5px;color:#2c2789;}
.rating-score small{font-size:12.5px;color:var(--muted);}
.rating-meta h3{font-size:18px;margin-bottom:6px;}
.rating-meta p{font-size:14px;color:var(--ink-soft);}

/* reviews */
.review{display:flex;flex-direction:column;gap:12px;}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:15px;flex:none;
  background:linear-gradient(140deg,#4b3cff,#00b8d4);
}
.review-top b{font-size:14.5px;display:block;}
.review-top small{font-size:12px;color:var(--muted);}
.review p{font-size:14px;color:var(--ink-soft);}

/* faq */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .3s, box-shadow .3s;
}
.faq-item.open{border-color:rgba(75,60,255,.35);box-shadow:0 18px 34px -30px rgba(35,32,110,.9);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:17px 20px;font-size:15px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-family:inherit;transition:color .25s;
}
.faq-q:hover{color:var(--brand);}
.faq-q .plus{
  flex:none;width:22px;height:22px;border-radius:50%;position:relative;
  background:rgba(75,60,255,.1);transition:transform .3s, background .3s;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:#4b3cff;border-radius:2px;
  transform:translate(-50%,-50%);transition:.3s;
}
.faq-q .plus::before{width:10px;height:2px;}
.faq-q .plus::after{width:2px;height:10px;}
.faq-item.open .faq-q .plus{transform:rotate(180deg);background:rgba(75,60,255,.18);}
.faq-item.open .faq-q .plus::after{height:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--ink-soft);}

/* token price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  display:flex;flex-direction:column;gap:12px;transition:transform .3s, box-shadow .3s;
}
.price-card:hover{transform:translateY(-5px);box-shadow:0 26px 44px -30px rgba(35,32,110,.85);}
.price-card.hot{border-color:rgba(75,60,255,.4);background:linear-gradient(165deg,#fff,rgba(244,246,255,.9));}
.price-card .pname{font-size:15px;font-weight:700;}
.price-card .pval{font-size:26px;font-weight:800;letter-spacing:-.8px;color:#2c2789;}
.price-card .pval small{font-size:12.5px;font-weight:500;color:var(--muted);}
.price-card ul{display:grid;gap:8px;font-size:13.5px;color:var(--ink-soft);}
.price-card li{display:flex;gap:8px;}
.price-card li::before{content:"";flex:none;width:6px;height:6px;margin-top:8px;border-radius:50%;background:linear-gradient(140deg,#4b3cff,#00b8d4);}

/* form */
.form-panel{
  display:grid;grid-template-columns:1fr 1.05fr;gap:30px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow);
}
.form-info h2{font-size:clamp(22px,2.6vw,28px);line-height:1.32;}
.form-info p{margin-top:12px;font-size:14.5px;color:var(--ink-soft);}
.contact-list{display:grid;gap:10px;margin-top:20px;}
.contact-list li{
  display:flex;gap:10px;font-size:13.8px;color:var(--ink-soft);padding:11px 14px;border-radius:12px;
  background:rgba(246,247,255,.9);border:1px solid var(--line);
}
.contact-list li b{color:var(--ink);font-weight:600;min-width:74px;}
form{display:grid;gap:13px;}
.field{display:grid;gap:6px;}
.field label{font-size:13px;font-weight:600;color:var(--ink-soft);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(24,32,64,.16);
  background:#fbfbff;font-size:14px;color:var(--ink);font-family:inherit;outline:none;
  transition:border-color .25s, box-shadow .25s, background .25s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(75,60,255,.5);background:#fff;box-shadow:0 0 0 4px rgba(75,60,255,.1);
}
.field textarea{min-height:104px;resize:vertical;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:13px;}
.form-note{font-size:12.5px;color:var(--muted);}
.form-submit{
  border:none;cursor:pointer;font-family:inherit;font-size:15px;font-weight:600;color:#fff;padding:14px 22px;
  border-radius:13px;background:linear-gradient(100deg,#4b3cff,#7a5cff 48%,#00b8d4);
  box-shadow:0 18px 34px -18px rgba(75,60,255,.95);transition:transform .25s, box-shadow .25s;
}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 24px 40px -18px rgba(75,60,255,1);}
.form-msg{font-size:13px;color:#1c8a5a;min-height:18px;}

/* network timeline */
.timeline{display:grid;gap:14px;border-left:2px dashed rgba(75,60,255,.25);padding-left:22px;}
.tl-item{position:relative;}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:6px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid #4b3cff;box-shadow:0 0 0 4px rgba(75,60,255,.1);
}
.tl-item b{font-size:15px;}
.tl-item p{font-size:13.8px;color:var(--ink-soft);}

/* articles */
.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.article{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;
  display:flex;flex-direction:column;gap:9px;transition:transform .3s, box-shadow .3s, border-color .3s;
}
.article:hover{transform:translateY(-4px);border-color:rgba(75,60,255,.32);box-shadow:0 24px 40px -30px rgba(35,32,110,.85);}
.article h3{font-size:15.5px;line-height:1.45;}
.article p{font-size:13.5px;color:var(--ink-soft);}
.article span{font-size:12px;color:#4b3cff;font-weight:600;letter-spacing:.4px;}

/* partner */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.partner{
  padding:14px 16px;border-radius:12px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-soft);text-align:center;transition:.3s;
}
.partner:hover{color:#2c2789;border-color:rgba(75,60,255,.35);transform:translateY(-2px);}

/* friend links */
.link-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.link-cloud a{
  font-size:13px;padding:8px 15px;border-radius:999px;color:#2f2c72;background:#fff;
  border:1px solid var(--line);transition:.25s;
}
.link-cloud a:hover{color:#fff;background:linear-gradient(100deg,#4b3cff,#00b8d4);border-color:transparent;transform:translateY(-2px);}

/* footer */
.site-footer{
  margin-top:10px;padding:44px 0 26px;
  background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(240,242,255,.95));
  border-top:1px solid var(--line);color:var(--ink-soft);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px;}
.footer-brand .ai-page-logo{height:34px;width:auto;margin-bottom:12px;}
.footer-brand p{font-size:13.5px;color:var(--ink-soft);}
.footer-col h3{font-size:14px;color:var(--ink);margin-bottom:12px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:8px;}
.footer-col a,.footer-col li{font-size:13.5px;color:var(--ink-soft);}
.footer-col a:hover{color:var(--brand);}
.qr-box{display:flex;gap:14px;align-items:center;}
.qr-box img{width:92px;height:92px;border-radius:12px;border:1px solid var(--line);background:#fff;object-fit:cover;}
.qr-box small{font-size:12.5px;color:var(--muted);display:block;}
.copyright{
  margin-top:28px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--muted);
}
.copyright a{color:var(--ink-soft);}
.copyright a:hover{color:var(--brand);}

/* float service */
.float-service{position:fixed;right:18px;bottom:22px;z-index:80;display:flex;flex-direction:column;gap:10px;align-items:flex-end;}
.float-btn{
  width:52px;height:52px;border-radius:16px;border:none;cursor:pointer;
  background:#fff;border:1px solid rgba(75,60,255,.24);color:#3b33a8;
  box-shadow:0 14px 30px -18px rgba(35,32,110,.9);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  font-family:inherit;transition:transform .25s, background .25s, color .25s;
}
.float-btn:hover{transform:translateY(-3px);background:linear-gradient(140deg,#4b3cff,#00b8d4);color:#fff;border-color:transparent;}
.float-panel{
  width:210px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;
  box-shadow:0 24px 46px -24px rgba(35,32,110,.9);display:none;
}
.float-panel.show{display:block;animation:fadeUp .28s ease both;}
.float-panel img{width:100%;border-radius:10px;margin-bottom:8px;object-fit:cover;}
.float-panel p{font-size:12.5px;color:var(--ink-soft);text-align:center;}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s cubic-bezier(.22,.68,.32,1);}
.reveal.visible{opacity:1;transform:none;}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-6px);}}

/* responsive */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .article-list{grid-template-columns:repeat(2,1fr);}
  .partner-grid{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:70px;
    flex-direction:column;align-items:flex-start;gap:0;
    background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);
    padding:10px 18px 18px;box-shadow:0 22px 40px -30px rgba(35,32,110,.8);
  }
  .nav-links.show{display:flex;}
  .nav-links a{width:100%;padding:11px 4px;border-radius:0;}
  .menu-toggle{display:flex;}
  .nav-cta{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .about-wrap{grid-template-columns:1fr;}
  .form-panel{grid-template-columns:1fr;padding:22px;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .price-grid{grid-template-columns:1fr 1fr;}
  .rating-panel{grid-template-columns:1fr;gap:16px;}
  .rating-score{border-right:none;border-bottom:1px dashed rgba(75,60,255,.28);padding:0 0 16px;text-align:left;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  section{padding:46px 0;}
  .hero{padding:44px 0 42px;}
  .grid-2,.grid-3,.price-grid,.article-list{grid-template-columns:1fr;}
  .grid-4,.steps,.partner-grid{grid-template-columns:1fr 1fr;}
  .panel-stats{grid-template-columns:1fr 1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .float-btn{width:48px;height:48px;font-size:12px;}
  .media-row{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
}