:root{
  --brand:#1f5eff;
  --brand-2:#00c2a8;
  --brand-3:#ff6a3d;
  --ink:#101a33;
  --ink-2:#3a4763;
  --ink-3:#6b7691;
  --line:#e3e8f4;
  --bg:#f3f6ff;
  --card:#ffffff;
  --radius:18px;
  --shadow:0 10px 30px rgba(24,50,120,.08);
  --shadow-lg:0 20px 48px rgba(24,50,120,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(0,194,168,.16), transparent 60%),
    radial-gradient(1000px 500px at 0% 0%, rgba(31,94,255,.14), transparent 55%),
    linear-gradient(180deg,#f7f9ff 0%, #eef3ff 40%, #f6f9ff 100%);
  background-attachment:fixed;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
section{padding:72px 0}
h1,h2,h3,h4{line-height:1.35;letter-spacing:.2px}

/* ---------- NAV ---------- */
.site-header{position:sticky;top:0;z-index:60;backdrop-filter:blur(14px);background:rgba(255,255,255,.82);border-bottom:1px solid rgba(31,94,255,.1)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink);flex:none}
.brand .ai-page-logo{width:38px;max-width:38px;border-radius:10px}
.brand-tag{font-size:11px;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));padding:2px 8px;border-radius:20px;letter-spacing:.5px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{padding:8px 14px;font-size:14.5px;color:var(--ink-2);font-weight:500;border-radius:20px;transition:color .25s,background .25s;white-space:nowrap}
.nav-links a:hover{color:var(--brand);background:rgba(31,94,255,.08)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--brand),#4a7dff);color:#fff !important;padding:9px 18px !important;border-radius:24px;font-weight:600 !important;box-shadow:0 8px 18px rgba(31,94,255,.32);transition:transform .25s,box-shadow .25s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(31,94,255,.42);background:linear-gradient(135deg,#4a7dff,var(--brand)) !important;color:#fff !important}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- HERO ---------- */
.hero{position:relative;padding:70px 0 64px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 340px at 80% 10%, rgba(0,194,168,.18), transparent 70%),
  radial-gradient(520px 320px at 10% 90%, rgba(255,106,61,.12), transparent 70%);
  pointer-events:none}
.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;font-size:13px;font-weight:600;color:var(--brand);background:#fff;border:1px solid rgba(31,94,255,.2);padding:7px 14px;border-radius:30px;box-shadow:var(--shadow);margin-bottom:20px}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand-2);display:inline-block;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(0,194,168,.5)}50%{box-shadow:0 0 0 7px rgba(0,194,168,0)}}
.hero h1{font-size:44px;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:transparent;background:linear-gradient(100deg,var(--brand),var(--brand-2) 55%,var(--brand-3));-webkit-background-clip:text;background-clip:text}
.hero h1 .plain{color:var(--ink)}
.hero-sub{font-size:16.5px;color:var(--ink-2);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15.5px;font-weight:600;padding:13px 26px;border-radius:30px;border:0;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;font-family:inherit}
.btn-primary{background:linear-gradient(135deg,var(--brand),#5b8bff);color:#fff;box-shadow:0 12px 26px rgba(31,94,255,.34)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(31,94,255,.42)}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid rgba(31,94,255,.28);box-shadow:var(--shadow)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--brand);background:#f5f8ff}
.hero-visual{position:relative}
.panel{position:relative;background:linear-gradient(150deg,#ffffff,#eef4ff);border:1px solid rgba(31,94,255,.14);border-radius:24px;padding:24px;box-shadow:var(--shadow-lg)}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.panel-title{font-size:14px;font-weight:700;color:var(--ink)}
.panel-dots{display:flex;gap:6px}
.panel-dots span{width:8px;height:8px;border-radius:50%;background:#cbd6f0}
.panel-dots span:nth-child(1){background:#ff6a3d}
.panel-dots span:nth-child(2){background:#ffc73d}
.panel-dots span:nth-child(3){background:#00c2a8}
.chip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.chip{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 8px;text-align:center;font-size:12.5px;font-weight:600;color:var(--ink-2);transition:transform .25s,box-shadow .25s,color .25s}
.chip:hover{transform:translateY(-3px);box-shadow:0 10px 20px rgba(31,94,255,.14);color:var(--brand)}
.panel-bar{margin-top:16px;height:8px;border-radius:6px;background:linear-gradient(90deg,var(--brand),var(--brand-2),var(--brand-3));opacity:.85;animation:barMove 4s ease-in-out infinite}
@keyframes barMove{0%,100%{transform:scaleX(.94);transform-origin:left}50%{transform:scaleX(1);transform-origin:left}}
.hero-note{margin-top:16px;font-size:12.5px;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:14px}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2)}

/* ---------- SECTION HEAD ---------- */
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.section-tag{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--brand);background:rgba(31,94,255,.1);padding:5px 14px;border-radius:20px;margin-bottom:14px}
.section-head h2{font-size:32px;font-weight:800;margin-bottom:12px}
.section-head p{color:var(--ink-2);font-size:15.5px}

/* ---------- METRICS ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.metric:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.metric-num{font-size:34px;font-weight:800;background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:0}
.metric-label{font-size:14px;color:var(--ink-2);margin-top:4px}

/* ---------- ABOUT ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.about-text h2{font-size:30px;margin-bottom:16px}
.about-text p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px}
.about-points{display:grid;gap:12px;margin-top:20px}
.about-point{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow);transition:transform .3s}
.about-point:hover{transform:translateX(5px)}
.about-point .dot{flex:none;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center}
.about-point b{display:block;font-size:14.5px;color:var(--ink)}
.about-point small{font-size:13px;color:var(--ink-3)}
.about-side{background:linear-gradient(160deg,#ffffff,#eef4ff);border:1px solid rgba(31,94,255,.16);border-radius:22px;padding:26px;box-shadow:var(--shadow-lg)}
.about-side h3{font-size:18px;margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud span{font-size:12.5px;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:20px;padding:5px 12px;transition:.25s}
.tag-cloud span:hover{color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent;transform:translateY(-2px)}
.model-list{margin-top:20px;font-size:13px;color:var(--ink-3);line-height:2}

/* ---------- SERVICES ---------- */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s,border-color .3s;display:flex;flex-direction:column;gap:10px}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(31,94,255,.3)}
.service-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),#5b8bff)}
.service-card:nth-child(3n+2) .service-icon{background:linear-gradient(135deg,var(--brand-2),#3fe0c6)}
.service-card:nth-child(3n) .service-icon{background:linear-gradient(135deg,var(--brand-3),#ff9b6d)}
.service-card h3{font-size:16.5px}
.service-card p{font-size:13.5px;color:var(--ink-3);flex:1}

/* ---------- ONESTOP / FLOW ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow);transition:transform .3s}
.flow-step:hover{transform:translateY(-5px)}
.flow-num{font-size:12px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.flow-step h3{font-size:15.5px;margin-bottom:6px}
.flow-step p{font-size:13px;color:var(--ink-3)}

/* ---------- SOLUTION ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.solution-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border-left:4px solid var(--brand);transition:transform .3s,box-shadow .3s}
.solution-card:nth-child(2){border-left-color:var(--brand-2)}
.solution-card:nth-child(3){border-left-color:var(--brand-3)}
.solution-card:nth-child(4){border-left-color:#8b5cf6}
.solution-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.solution-card h3{font-size:17px;margin-bottom:8px}
.solution-card p{font-size:13.5px;color:var(--ink-3)}

/* ---------- NETWORK / TIMELINE ---------- */
.timeline{position:relative;display:grid;gap:18px;padding-left:26px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),var(--brand-2),transparent)}
.tl-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow)}
.tl-item::before{content:"";position:absolute;left:-24px;top:22px;width:12px;height:12px;border-radius:50%;background:var(--brand);border:3px solid #fff;box-shadow:0 0 0 2px rgba(31,94,255,.25)}
.tl-item b{display:block;font-size:14.5px;color:var(--ink)}
.tl-item span{font-size:13px;color:var(--ink-3)}

/* ---------- CASE ---------- */
.case-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;align-items:start}
.case-hero{background:linear-gradient(150deg,#ffffff,#eef4ff);border:1px solid rgba(31,94,255,.16);border-radius:20px;padding:16px;box-shadow:var(--shadow-lg)}
.case-hero .img-box{border-radius:14px;overflow:hidden;background:#eef3ff}
.case-hero .img-box img{width:100%;object-fit:contain;aspect-ratio:16/10}
.case-hero h3{font-size:17px;margin:14px 0 6px}
.case-hero p{font-size:13.5px;color:var(--ink-3)}
.case-side{display:grid;gap:18px}
.case-mini{display:grid;grid-template-columns:120px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:var(--shadow);align-items:center;transition:transform .3s}
.case-mini:hover{transform:translateY(-4px)}
.case-mini .img-box{border-radius:10px;overflow:hidden;background:#eef3ff}
.case-mini .img-box img{width:100%;object-fit:cover;aspect-ratio:1/1}
.case-mini b{font-size:14px;color:var(--ink)}
.case-mini small{font-size:12.5px;color:var(--ink-3);display:block;margin-top:4px}

/* ---------- COMPARE ---------- */
.compare-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg)}
.compare-table{width:100%;border-collapse:collapse;min-width:720px}
.compare-table th,.compare-table td{padding:15px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);vertical-align:middle}
.compare-table thead th{background:linear-gradient(135deg,rgba(31,94,255,.1),rgba(0,194,168,.12));color:var(--ink);font-weight:700;font-size:14px}
.compare-table tbody tr:hover{background:#f7faff}
.compare-table tbody td:first-child{font-weight:600;color:var(--ink)}
.compare-table tbody td:last-child{color:var(--brand);font-weight:600}
.rating-badge{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--brand-3),#ffb03d);color:#fff;font-weight:700;padding:4px 12px;border-radius:20px;font-size:13px}
.stars{color:#ffb03d;letter-spacing:2px;font-size:16px}
.score-box{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:26px}
.score-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 26px;box-shadow:var(--shadow);text-align:center;flex:1;min-width:160px}
.score-item b{display:block;font-size:26px;color:var(--brand);font-weight:800}
.score-item span{font-size:13px;color:var(--ink-3)}

/* ---------- TOKEN ---------- */
.token-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.token-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);transition:transform .3s}
.token-card:hover{transform:translateY(-5px)}
.token-card h3{font-size:15.5px;margin-bottom:10px;display:flex;justify-content:space-between;align-items:center}
.token-card h3 em{font-style:normal;font-size:11px;background:rgba(0,194,168,.14);color:#0b9c86;padding:2px 8px;border-radius:10px;font-weight:600}
.token-row{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);padding:7px 0;border-bottom:1px dashed var(--line)}
.token-row:last-child{border-bottom:0}
.token-row b{color:var(--brand);font-weight:700}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:rgba(31,94,255,.4)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;background:none;border:0;text-align:left;font-family:inherit;font-size:15px;font-weight:600;color:var(--ink);padding:17px 20px;cursor:pointer}
.faq-q::after{content:"+";font-size:20px;color:var(--brand);font-weight:400;transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;font-size:14px;color:var(--ink-3);padding:0 20px}
.faq-item.open .faq-a{max-height:320px;padding:0 20px 18px}

/* ---------- TESTIMONIALS ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;transition:transform .3s,box-shadow .3s}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.review-card .stars{font-size:14px}
.review-card p{font-size:13.5px;color:var(--ink-2);flex:1}
.review-user{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:12px}
.review-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.review-user b{font-size:13.5px;display:block;color:var(--ink)}
.review-user small{font-size:12px;color:var(--ink-3)}

/* ---------- ARTICLES ---------- */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;gap:8px}
.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.article-card .tag{font-size:11.5px;color:var(--brand);background:rgba(31,94,255,.1);padding:3px 10px;border-radius:12px;align-self:flex-start;font-weight:600}
.article-card h3{font-size:15px;line-height:1.5}
.article-card p{font-size:13px;color:var(--ink-3);flex:1}
.article-card a{font-size:13px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.article-card a::after{content:"→";transition:transform .25s}
.article-card:hover a::after{transform:translateX(3px)}

/* ---------- FORM ---------- */
.form-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:start}
.form-info h2{font-size:28px;margin-bottom:14px}
.form-info p{font-size:14.5px;color:var(--ink-2);margin-bottom:18px}
.contact-list{display:grid;gap:12px}
.contact-item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;box-shadow:var(--shadow)}
.contact-item .ci-icon{flex:none;width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.contact-item b{display:block;font-size:13.5px;color:var(--ink)}
.contact-item small{font-size:12.5px;color:var(--ink-3);word-break:break-all}
.form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow-lg)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .hint{font-size:12.5px;color:var(--ink-3);margin-bottom:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13px;font-weight:600;color:var(--ink-2)}
.form-field input,.form-field select,.form-field textarea{font-family:inherit;font-size:14px;color:var(--ink);background:#f8faff;border:1px solid var(--line);border-radius:10px;padding:11px 13px;outline:none;transition:border-color .25s,box-shadow .25s;width:100%}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,94,255,.14)}
.form-field textarea{min-height:96px;resize:vertical}
.form-submit{margin-top:6px;width:100%}
.form-tip{font-size:12px;color:var(--ink-3);margin-top:10px}

/* ---------- FOOTER ---------- */
.site-footer{background:#0e1a36;color:#c7d2ea;padding:52px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:34px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-brand img{width:34px;border-radius:8px}
.site-footer p{font-size:13px;color:#9fb0d0;line-height:1.9}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:700}
.footer-col ul{list-style:none;display:grid;gap:9px}
.footer-col a{font-size:13px;color:#a9b9d6;transition:color .25s}
.footer-col a:hover{color:#6fd6c4}
.footer-contact{font-size:13px;color:#a9b9d6;line-height:2}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;font-size:12.5px;color:#8fa1c4}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:14px}
.footer-bottom .links a{color:#a9b9d6}
.footer-bottom .links a:hover{color:#6fd6c4}

/* ---------- FLOAT ---------- */
.float-btn{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:70}
.float-btn button,.float-btn a{width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand),#5b8bff);box-shadow:0 10px 22px rgba(31,94,255,.4);transition:transform .25s,box-shadow .25s}
.float-btn button:hover,.float-btn a:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(31,94,255,.5)}
.float-btn .to-top{background:linear-gradient(135deg,#0e1a36,#2a3d6b);display:none}
.float-btn .to-top.show{display:flex}
.kefu-modal{position:fixed;inset:0;background:rgba(14,26,54,.55);display:none;align-items:center;justify-content:center;z-index:90;padding:20px}
.kefu-modal.show{display:flex}
.kefu-box{background:#fff;border-radius:18px;padding:22px;max-width:300px;width:100%;text-align:center;box-shadow:var(--shadow-lg);animation:fadeUp .3s ease}
.kefu-box h4{font-size:16px;margin-bottom:12px;color:var(--ink)}
.kefu-box img{border-radius:10px;margin:0 auto 12px;max-width:220px}
.kefu-box p{font-size:12.5px;color:var(--ink-3)}
.kefu-close{margin-top:14px;background:var(--brand);color:#fff;border:0;border-radius:20px;padding:8px 22px;font-size:13px;cursor:pointer;font-family:inherit}

/* ---------- REVEAL ANIM ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:36px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .service-grid,.token-grid,.review-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .about-grid,.form-wrap,.case-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  section{padding:52px 0}
  .nav-toggle{display:flex}
  .nav-links{position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:10px 16px 18px;gap:2px;box-shadow:var(--shadow-lg);display:none;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 14px;border-radius:10px}
  .nav-cta{justify-content:center;margin-top:6px}
  .hero{padding:44px 0 42px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:15px}
  .section-head h2,.about-text h2,.form-info h2{font-size:24px}
  .service-grid,.token-grid,.review-grid,.article-grid,.flow,.solution-grid,.metrics{grid-template-columns:1fr}
  .chip-grid{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .case-mini{grid-template-columns:96px 1fr}
  .score-item{min-width:140px}
}