:root{
  --blue:#1246e6;
  --blue-2:#2a6bff;
  --blue-deep:#0a2a86;
  --blue-soft:#eaf0ff;
  --ink:#0d1b3e;
  --ink-2:#41527a;
  --line:#e2e8f5;
  --bg:#f6f8ff;
  --white:#fff;
  --radius:16px;
  --shadow:0 10px 30px rgba(18,70,230,.10);
  --shadow-hover:0 18px 44px rgba(18,70,230,.20);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block}
ul{list-style:none}
.container{width:min(1200px,92%);margin:0 auto}
.section{padding:88px 0}
.section.alt{background:var(--bg)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1px;color:var(--blue);
  background:var(--blue-soft);padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue)}
.sec-title{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.3;letter-spacing:-.5px}
.sec-sub{color:var(--ink-2);font-size:15.5px;max-width:760px;margin-top:14px}
.sec-head{margin-bottom:44px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ai-page-logo{width:132px;object-fit:contain}
.nav-wrap{flex:1;display:flex;justify-content:center}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  padding:8px 11px;border-radius:8px;transition:.22s;white-space:nowrap;
}
.nav-links a:hover{color:var(--blue);background:var(--blue-soft)}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;border-radius:10px;padding:12px 26px;
  cursor:pointer;border:none;transition:.24s;line-height:1.2;
}
.btn-primary{
  background:linear-gradient(135deg,#1246e6,#2a6bff);color:#fff;
  box-shadow:0 8px 20px rgba(18,70,230,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(18,70,230,.38)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--blue);border:1.5px solid #c9d6ff}
.btn-ghost:hover{background:var(--blue-soft);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}

/* ===== Hero (no images) ===== */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(42,107,255,.22), transparent 60%),
    radial-gradient(900px 480px at 0% 110%, rgba(18,70,230,.14), transparent 55%),
    linear-gradient(160deg,#f4f8ff 0%,#ffffff 45%,#eef3ff 100%);
  padding:100px 0 90px;
}
.hero::before,.hero::after{
  content:"";position:absolute;border-radius:50%;pointer-events:none;
}
.hero::before{
  width:520px;height:520px;right:-160px;top:-160px;
  background:radial-gradient(circle,rgba(42,107,255,.18),transparent 70%);
  animation:floatSlow 12s ease-in-out infinite;
}
.hero::after{
  width:380px;height:380px;left:-120px;bottom:-140px;
  background:radial-gradient(circle,rgba(18,70,230,.14),transparent 70%);
  animation:floatSlow 16s ease-in-out infinite reverse;
}
@keyframes floatSlow{0%,100%{transform:translate(0,0)}50%{transform:translate(24px,-24px)}}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.85);
  border:1px solid #ccd9ff;color:var(--blue);
  font-size:13px;font-weight:700;padding:7px 16px;border-radius:999px;margin-bottom:22px;
  box-shadow:0 4px 14px rgba(18,70,230,.08);
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(18,70,230,.16)}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.24;font-weight:900;letter-spacing:-1px;
  color:var(--ink);
}
.hero h1 .hl{
  background:linear-gradient(120deg,#1246e6,#2a6bff 55%,#5b8cff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-desc{
  margin-top:22px;font-size:16.5px;color:var(--ink-2);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-actions .btn{padding:15px 32px;font-size:16px}
.hero-note{margin-top:18px;font-size:13.5px;color:var(--ink-2);display:flex;align-items:center;gap:8px}
.hero-note svg{flex-shrink:0}
.hero-panel{
  position:relative;background:#fff;border-radius:22px;
  border:1px solid var(--line);box-shadow:0 24px 60px rgba(18,70,230,.16);
  padding:26px;
}
.hero-panel h3{font-size:15px;color:var(--ink-2);font-weight:700;margin-bottom:18px;letter-spacing:.5px}
.hp-list{display:grid;gap:12px}
.hp-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:13px 16px;border-radius:12px;background:linear-gradient(120deg,#f5f8ff,#eef3ff);
  border:1px solid #e4ecff;transition:.24s;
}
.hp-item:hover{transform:translateX(4px);box-shadow:0 8px 22px rgba(18,70,230,.12)}
.hp-item .name{font-weight:700;font-size:14.5px;display:flex;align-items:center;gap:10px}
.hp-item .name i{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,#1246e6,#3d78ff);color:#fff;font-size:14px;font-style:normal;font-weight:800;
}
.hp-item .val{font-size:12.5px;font-weight:700;color:var(--blue);background:#fff;padding:4px 10px;border-radius:8px;border:1px solid #d7e2ff}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:56px;position:relative;z-index:2;
}
.stat-card{
  background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:14px;
  padding:22px 20px;text-align:center;transition:.28s;
  box-shadow:0 6px 18px rgba(18,70,230,.06);
}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.stat-card .num{
  font-size:clamp(24px,3vw,34px);font-weight:900;
  background:linear-gradient(120deg,#1246e6,#3d78ff);-webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:-1px;
}
.stat-card .lbl{font-size:13.5px;color:var(--ink-2);margin-top:6px;font-weight:600}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-media{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.about-media img{border-radius:14px;width:100%;height:100%;object-fit:cover;box-shadow:var(--shadow);transition:.3s}
.about-media img:hover{transform:scale(1.02)}
.about-media .tall{grid-row:span 2;min-height:280px}
.about-list{display:grid;gap:16px;margin-top:26px}
.about-list li{display:flex;gap:12px;align-items:flex-start}
.about-list .ic{
  width:34px;height:34px;border-radius:9px;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(135deg,#eaf0ff,#dbe7ff);color:var(--blue);
}
.about-list strong{display:block;font-size:15.5px}
.about-list span{font-size:14px;color:var(--ink-2)}

/* ===== Cards grid ===== */
.cards{display:grid;gap:22px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.cards.c4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;transition:.28s;position:relative;overflow:hidden;
}
.card::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,#1246e6,#3d78ff);transition:.35s;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#cfdcff}
.card:hover::after{width:100%}
.card .ic-lg{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,#1246e6,#3d78ff);color:#fff;margin-bottom:18px;
  box-shadow:0 10px 22px rgba(18,70,230,.26);
}
.card h3{font-size:18px;font-weight:800;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--ink-2)}

/* ===== Scenarios ===== */
.scen-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.scen{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:22px 18px;transition:.26s;
}
.scen:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#cfdcff;background:linear-gradient(160deg,#fff,#f5f8ff)}
.scen .s-ic{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:var(--blue-soft);color:var(--blue);margin-bottom:14px;font-size:18px;
}
.scen h4{font-size:15.5px;font-weight:800;margin-bottom:7px}
.scen p{font-size:13.5px;color:var(--ink-2);line-height:1.65}

/* ===== Marquee chips ===== */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.chip{
  font-size:13.5px;font-weight:700;color:var(--blue-deep);
  background:#fff;border:1px solid #d7e2ff;border-radius:999px;padding:8px 16px;
  transition:.24s;
}
.chip:hover{background:var(--blue);color:#fff;border-color:var(--blue);transform:translateY(-3px);box-shadow:0 8px 18px rgba(18,70,230,.24)}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 24px;
  position:relative;transition:.28s;
}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.step .no{
  font-size:40px;font-weight:900;line-height:1;
  background:linear-gradient(120deg,#1246e6,#5b8cff);-webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:-2px;margin-bottom:14px;
}
.step h4{font-size:17px;font-weight:800;margin-bottom:9px}
.step p{font-size:14px;color:var(--ink-2)}

/* ===== Industry ===== */
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ind{
  background:linear-gradient(160deg,#fff,#f4f8ff);border:1px solid var(--line);
  border-radius:16px;padding:28px;transition:.28s;
}
.ind:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#cfdcff}
.ind h4{font-size:17.5px;font-weight:800;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.ind h4 .tag{font-size:11.5px;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:3px 9px;border-radius:6px}
.ind p{font-size:14px;color:var(--ink-2)}
.ind ul{margin-top:14px;display:grid;gap:8px}
.ind li{font-size:13.5px;color:var(--ink-2);padding-left:20px;position:relative}
.ind li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--blue-2)}

/* ===== Network ===== */
.net-box{
  background:linear-gradient(135deg,#0d2b8f,#1246e6 55%,#2a6bff);
  border-radius:22px;padding:56px;color:#fff;position:relative;overflow:hidden;
}
.net-box::before{
  content:"";position:absolute;width:460px;height:460px;right:-160px;top:-180px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%);
}
.net-box h2{font-size:clamp(24px,3vw,34px);font-weight:900;margin-bottom:14px;position:relative}
.net-box p{color:#cfdcff;font-size:15px;max-width:720px;position:relative}
.net-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;position:relative}
.net-item{border-left:2px solid rgba(255,255,255,.28);padding-left:18px}
.net-item .n{font-size:30px;font-weight:900;letter-spacing:-1px}
.net-item .t{font-size:13.5px;color:#cfdcff;margin-top:4px}

/* ===== Table ===== */
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:680px;font-size:14.5px}
thead th{
  background:linear-gradient(135deg,#1246e6,#2a6bff);color:#fff;
  text-align:left;padding:16px 20px;font-weight:700;white-space:nowrap;
}
tbody td{padding:15px 20px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:middle}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#f6f9ff}
tbody td.hl-cell{color:var(--blue);font-weight:800}
tbody td:first-child{font-weight:700;color:var(--ink)}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:6px;background:var(--blue-soft);color:var(--blue)}
.stars{color:#ffb400;letter-spacing:2px;font-size:15px}
.score{font-size:18px;font-weight:900;color:var(--blue)}

/* ===== Review hero card ===== */
.review-hero{
  display:grid;grid-template-columns:280px 1fr;gap:40px;align-items:center;
  background:linear-gradient(135deg,#f5f8ff,#eaf0ff);border:1px solid #d7e2ff;
  border-radius:20px;padding:40px;margin-bottom:36px;
}
.rev-score{text-align:center;border-right:1px solid #d5e0ff}
.rev-score .big{
  font-size:64px;font-weight:900;line-height:1;letter-spacing:-3px;
  background:linear-gradient(120deg,#1246e6,#5b8cff);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.rev-score .stars{margin-top:10px;font-size:20px}
.rev-score .rl{font-size:13.5px;color:var(--ink-2);margin-top:8px;font-weight:600}
.rev-body h3{font-size:22px;font-weight:900;margin-bottom:12px}
.rev-body p{font-size:15px;color:var(--ink-2)}

/* ===== Testimonials ===== */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;
  transition:.28s;display:flex;flex-direction:column;gap:16px;
}
.review:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#cfdcff}
.review .stars{font-size:14px}
.review p{font-size:14.5px;color:var(--ink-2);flex:1}
.review .who{display:flex;align-items:center;gap:12px}
.review .avatar{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,#1246e6,#3d78ff);color:#fff;font-weight:800;font-size:16px;flex-shrink:0;
}
.review .who strong{display:block;font-size:14.5px}
.review .who span{font-size:12.5px;color:#8394bb}

/* ===== Cases ===== */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:.3s;display:flex;flex-direction:column;
}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.case-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#eaf0ff}
.case-media img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case:hover .case-media img{transform:scale(1.05)}
.case-body{padding:22px;flex:1;display:flex;flex-direction:column}
.case-body .ct{font-size:12.5px;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:3px 10px;border-radius:6px;align-self:flex-start;margin-bottom:12px}
.case-body h4{font-size:17px;font-weight:800;margin-bottom:9px}
.case-body p{font-size:14px;color:var(--ink-2);flex:1}
.case-meta{display:flex;gap:18px;margin-top:16px;padding-top:16px;border-top:1px dashed var(--line)}
.case-meta div{font-size:12.5px;color:#8394bb}
.case-meta strong{display:block;font-size:16px;color:var(--blue);font-weight:900}

/* ===== Token price ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px 28px;text-align:center;
  transition:.3s;position:relative;
}
.price-card.featured{
  background:linear-gradient(160deg,#1246e6,#2a6bff);color:#fff;border:none;
  box-shadow:0 20px 46px rgba(18,70,230,.30);transform:translateY(-8px);
}
.price-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-hover)}
.price-card.featured:hover{transform:translateY(-14px)}
.price-card .pl{font-size:14px;font-weight:700;color:var(--ink-2);letter-spacing:.5px}
.price-card.featured .pl{color:#cfdcff}
.price-card .pv{font-size:34px;font-weight:900;margin:12px 0 4px;letter-spacing:-1.5px;color:var(--blue)}
.price-card.featured .pv{color:#fff}
.price-card .pv small{font-size:14px;font-weight:600}
.price-card .pd{font-size:13px;color:var(--ink-2);margin-bottom:22px}
.price-card.featured .pd{color:#cfdcff}
.price-card ul{text-align:left;display:grid;gap:10px;margin-bottom:24px}
.price-card li{font-size:14px;color:var(--ink-2);padding-left:22px;position:relative}
.price-card.featured li{color:#e5ecff}
.price-card li::before{
  content:"✓";position:absolute;left:0;top:0;font-weight:800;color:var(--blue);
}
.price-card.featured li::before{color:#fff}

/* ===== Articles ===== */
.article-links{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:26px}
.article-links a{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 16px;
  font-size:14px;font-weight:700;color:var(--ink);transition:.26s;display:flex;align-items:center;gap:10px;
}
.article-links a::before{content:"›";color:var(--blue);font-size:20px;font-weight:800;line-height:1}
.article-links a:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcff;color:var(--blue)}
.article-box{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:var(--shadow);
}
.article-box .ah{font-size:16px;font-weight:800;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.article-box .ah::before{content:"";width:4px;height:18px;border-radius:3px;background:linear-gradient(180deg,#1246e6,#3d78ff)}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;transition:.26s}
.faq-item.open{border-color:#c3d4ff;box-shadow:var(--shadow)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:20px 24px;font-size:15.5px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;font-family:inherit;
}
.faq-q:hover{color:var(--blue)}
.faq-q .faq-ic{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;display:grid;place-items:center;
  background:var(--blue-soft);color:var(--blue);font-size:18px;font-weight:800;transition:.3s;
}
.faq-item.open .faq-ic{background:var(--blue);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;font-size:14.5px;color:var(--ink-2)}

/* ===== Form ===== */
.form-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;
}
.form-info h2{font-size:clamp(24px,3vw,34px);font-weight:900;margin-bottom:16px}
.form-info p{font-size:15px;color:var(--ink-2);margin-bottom:24px}
.contact-list{display:grid;gap:14px}
.contact-list li{display:flex;align-items:center;gap:12px;font-size:14.5px;color:var(--ink-2)}
.contact-list .ci{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex-shrink:0;
  background:var(--blue-soft);color:var(--blue);font-size:16px;
}
.contact-list strong{color:var(--ink);font-weight:700}
.qrcode-box{display:flex;align-items:center;gap:16px;margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.qrcode-box img{width:88px;height:88px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.qrcode-box .qt{font-size:14px;font-weight:700}
.qrcode-box .qs{font-size:12.5px;color:#8394bb;margin-top:4px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.field label .req{color:#e23b3b}
.field input,.field select,.field textarea{
  width:100%;padding:12px 15px;border:1.5px solid var(--line);border-radius:10px;
  font-size:14.5px;font-family:inherit;color:var(--ink);background:#fbfcff;transition:.22s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(18,70,230,.10);
}
.field textarea{resize:vertical;min-height:110px}
.form-card .btn{width:100%;padding:15px;font-size:16px;margin-top:6px}
.form-tip{font-size:12.5px;color:#8394bb;text-align:center;margin-top:14px}

/* ===== Links ===== */
.links-grid{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:34px}
.links-grid a{
  font-size:13.5px;font-weight:600;color:var(--ink-2);background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:9px 20px;transition:.24s;
}
.links-grid a:hover{background:var(--blue);color:#fff;border-color:var(--blue);transform:translateY(-3px)}

/* ===== Contact ===== */
.dark-box{
  background:linear-gradient(135deg,#0a2a86,#1246e6 60%,#2a6bff);
  border-radius:22px;padding:64px 48px;text-align:center;color:#fff;position:relative;overflow:hidden;
}
.dark-box::before{
  content:"";position:absolute;width:520px;height:520px;left:-180px;bottom:-240px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%);
}
.dark-box h2{font-size:clamp(26px,3.4vw,40px);font-weight:900;letter-spacing:-1px;position:relative}
.dark-box p{color:#cfdcff;font-size:16px;margin-top:16px;position:relative;max-width:680px;margin-left:auto;margin-right:auto}
.dark-box .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px;position:relative}
.dark-box .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.dark-box .btn-ghost:hover{background:rgba(255,255,255,.14)}
.dark-box .btn-primary{background:#fff;color:var(--blue);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.dark-box .btn-primary:hover{background:#eef3ff}

/* ===== Footer ===== */
.site-footer{background:#071a4a;color:#a9bbdd;padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand img{width:130px;filter:brightness(0) invert(1)}
.site-footer p{color:#8fa5cf;line-height:1.8;font-size:13.5px}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:18px}
.footer-col ul{display:grid;gap:10px}
.footer-col li a{font-size:13.5px;color:#8fa5cf;transition:.22s}
.footer-col li a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7a90bb;
}
.footer-bottom a{color:#a9bbdd}
.footer-bottom a:hover{color:#fff}

/* ===== Float ===== */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:200;display:flex;flex-direction:column;gap:12px;
}
.fab{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;cursor:pointer;
  background:linear-gradient(135deg,#1246e6,#2a6bff);color:#fff;border:none;
  box-shadow:0 12px 30px rgba(18,70,230,.38);transition:.28s;
}
.fab:hover{transform:translateY(-4px) scale(1.04)}
.fab svg{width:24px;height:24px}
.fab.back{
  background:#fff;color:var(--blue);border:1px solid #d7e2ff;
  box-shadow:0 8px 22px rgba(18,70,230,.16);opacity:0;visibility:hidden;transition:.3s;
}
.fab.back.show{opacity:1;visibility:visible}
.fab-kf{position:relative}
.fab-tip{
  position:absolute;right:66px;top:50%;transform:translateY(-50%);
  background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:12px;
  padding:12px;box-shadow:0 12px 30px rgba(18,70,230,.2);
  opacity:0;visibility:hidden;transition:.28s;width:150px;
}
.fab-kf:hover .fab-tip{opacity:1;visibility:visible}
.fab-tip img{width:126px;height:126px;object-fit:cover;border-radius:8px}
.fab-tip span{display:block;text-align:center;font-size:12px;color:var(--ink-2);margin-top:8px;font-weight:600}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.on{opacity:1;transform:none}

/* ===== Responsive ===== */
@media(max-width:1100px){
  .nav-links a{padding:8px 8px;font-size:13.5px}
  .header-cta .btn{padding:10px 16px;font-size:13.5px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-panel{max-width:520px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .cards.c4{grid-template-columns:repeat(2,1fr)}
  .scen-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .industry-grid{grid-template-columns:repeat(2,1fr)}
  .reviews{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .price-card.featured{transform:none}
  .article-links{grid-template-columns:repeat(2,1fr)}
  .form-wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .cases{grid-template-columns:repeat(2,1fr)}
  .review-hero{grid-template-columns:1fr;gap:24px}
  .rev-score{border-right:none;border-bottom:1px solid #d5e0ff;padding-bottom:24px}
  .net-stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:860px){
  .menu-toggle{display:flex}
  .nav-wrap{
    position:absolute;top:72px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(18,70,230,.1);
    display:none;padding:12px 4%;
  }
  .nav-wrap.open{display:block}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{padding:12px 14px;border-radius:10px}
  .header-cta .btn-ghost{display:none}
  .section{padding:64px 0}
  .hero{padding:70px 0 60px}
  .hero-stats{grid-template-columns:1fr;gap:12px}
  .stat-card{display:flex;align-items:center;justify-content:space-between;text-align:left;padding:18px 22px}
  .stat-card .lbl{margin-top:0}
  .net-box{padding:38px 24px}
  .dark-box{padding:46px 24px}
  .form-card{padding:26px 20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .article-links{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .industry-grid{grid-template-columns:1fr}
  .reviews{grid-template-columns:1fr}
  .cases{grid-template-columns:1fr}
  .cards.c3,.cards.c2,.cards.c4{grid-template-columns:1fr}
  .scen-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .net-stats{grid-template-columns:1fr 1fr;gap:20px}
  .float-btn{right:14px;bottom:14px}
  .fab{width:48px;height:48px;border-radius:14px}
}