*{margin:0;padding:0;box-sizing:border-box}
:root{
--ink:#10131c;--ink2:#1b2030;--paper:#ffffff;--soft:#f5f6fa;
--brand:#ff2d55;--brand2:#6c2bff;--accent:#00e0b0;--yellow:#ffd400;
--muted:#5a6076;--line:#e7e9f2;--radius:18px;
--shadow:0 12px 32px rgba(16,19,28,.08);
--shadow-h:0 22px 48px rgba(108,43,255,.18);
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:84px 0;position:relative}
.section.soft{background:var(--soft)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand2);background:rgba(108,43,255,.08);padding:6px 14px;border-radius:99px;margin-bottom:16px}
h2.sec-title{font-size:clamp(26px,3.4vw,42px);line-height:1.2;font-weight:800;letter-spacing:-.02em}
.sec-lead{color:var(--muted);font-size:16px;max-width:720px;margin-top:14px}
.center{text-align:center}
.center .sec-lead{margin-left:auto;margin-right:auto}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;padding:13px 26px;border-radius:12px;border:2px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s}
.btn:active{transform:scale(.97)}
.btn-brand{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 10px 24px rgba(255,45,85,.28)}
.btn-brand:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(108,43,255,.34)}
.btn-ghost{background:#fff;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-3px)}
.btn-accent{background:var(--accent);color:#062b25}
.btn-accent:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,224,176,.35)}

/* ===== NAV ===== */
header.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1240px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;white-space:nowrap}
.nav-brand .ai-page-logo{height:34px;width:auto;max-width:100%}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{font-size:14px;font-weight:600;color:var(--ink2);padding:8px 11px;border-radius:9px;transition:color .16s,background .16s}
.nav-links a:hover{color:var(--brand2);background:rgba(108,43,255,.08)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-cta .btn{padding:10px 18px;font-size:14px}
.burger{display:none;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
.burger span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.22s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:13px 22px;font-weight:600;font-size:15px;border-bottom:1px solid var(--line)}

/* ===== HERO (no images) ===== */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:96px 0 90px}
.hero::before{content:"";position:absolute;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(255,45,85,.55),transparent 65%);top:-220px;right:-140px;filter:blur(10px);animation:float1 14s ease-in-out infinite alternate}
.hero::after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(108,43,255,.5),transparent 65%);bottom:-220px;left:-120px;animation:float2 16s ease-in-out infinite alternate}
@keyframes float1{to{transform:translate(-40px,40px) scale(1.08)}}
@keyframes float2{to{transform:translate(50px,-30px) scale(1.1)}}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);padding:7px 16px;border-radius:99px;font-size:13px;font-weight:600;color:var(--yellow);margin-bottom:22px}
.hero h1{font-size:clamp(30px,4.6vw,58px);line-height:1.12;font-weight:900;letter-spacing:-.02em}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--yellow),var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:22px;font-size:17px;color:#c9cede;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-actions .btn-lg{padding:16px 32px;font-size:16px;border-radius:14px}
.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:20px;transition:transform .2s,border-color .2s,background .2s}
.stat-card:hover{transform:translateY(-5px);border-color:rgba(255,212,0,.6);background:rgba(255,255,255,.1)}
.stat-card b{display:block;font-size:30px;font-weight:900;color:var(--yellow);line-height:1.1}
.stat-card span{font-size:13px;color:#b9bfd2}
.hero-marquee{margin-top:44px;position:relative;z-index:2;overflow:hidden;border-top:1px solid rgba(255,255,255,.12);padding-top:22px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:12px;width:max-content;animation:scrollx 32s linear infinite}
.marquee-track span{white-space:nowrap;font-size:13px;font-weight:600;color:#dfe3f0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);padding:7px 15px;border-radius:99px}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===== ABOUT ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-top:44px}
.about-visual{position:relative}
.about-visual .ai-page-image{border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px}
.about-visual .img-pair{display:grid;grid-template-columns:1.4fr 1fr;gap:16px;align-items:start}
.badge-float{position:absolute;right:-8px;top:-8px;background:var(--brand);color:#fff;font-weight:800;font-size:13px;padding:10px 16px;border-radius:12px;box-shadow:0 12px 26px rgba(255,45,85,.4)}
.about-list{display:grid;gap:16px;margin-top:26px}
.about-item{display:flex;gap:14px;align-items:flex-start;background:var(--soft);border-radius:14px;padding:16px 18px;transition:transform .2s,box-shadow .2s}
.about-item:hover{transform:translateX(6px);box-shadow:var(--shadow)}
.about-item .ic{flex:0 0 38px;height:38px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand2),var(--brand));color:#fff;font-weight:800}
.about-item h4{font-size:16px;margin-bottom:2px}
.about-item p{font-size:14px;color:var(--muted)}

/* ===== SERVICES ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:44px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .22s,box-shadow .22s,border-color .22s;position:relative;overflow:hidden}
.svc-card::before{content:"";position:absolute;inset:0 auto auto 0;width:100%;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand2),var(--accent));opacity:0;transition:.22s}
.svc-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-h);border-color:transparent}
.svc-card:hover::before{opacity:1}
.svc-ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:24px;margin-bottom:16px;background:linear-gradient(135deg,rgba(255,45,85,.12),rgba(108,43,255,.14))}
.svc-card h3{font-size:18px;margin-bottom:8px}
.svc-card p{font-size:14px;color:var(--muted)}
.tagcloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.tagcloud span{font-size:13px;font-weight:600;padding:7px 15px;border-radius:99px;background:#fff;border:1px solid var(--line);color:var(--ink2);transition:.18s;cursor:default}
.tagcloud span:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}

/* ===== FLOW ===== */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:48px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;transition:transform .2s,box-shadow .2s}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step::before{counter-increment:step;content:"0" counter(step);font-size:34px;font-weight:900;color:rgba(108,43,255,.16);line-height:1;display:block;margin-bottom:10px}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:13px;color:var(--muted)}
.timeline{position:relative;margin-top:44px;padding-left:28px;border-left:3px solid var(--line)}
.tl-item{position:relative;padding:0 0 28px 22px}
.tl-item::before{content:"";position:absolute;left:-37px;top:4px;width:16px;height:16px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px rgba(255,45,85,.15)}
.tl-item h4{font-size:16px}
.tl-item p{font-size:14px;color:var(--muted)}

/* ===== SOLUTIONS / NETWORK ===== */
.sol-card{background:#fff;border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;transition:transform .22s,box-shadow .22s}
.sol-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.sol-card img{width:100%;height:220px;object-fit:cover}
.sol-body{padding:22px}
.sol-body h3{font-size:18px;margin-bottom:8px}
.sol-body p{font-size:14px;color:var(--muted)}
.network{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px}
.net-item{background:linear-gradient(135deg,var(--ink),var(--ink2));color:#fff;border-radius:16px;padding:22px;transition:transform .2s}
.net-item:hover{transform:translateY(-6px)}
.net-item b{display:block;font-size:26px;color:var(--accent);font-weight:900}
.net-item span{font-size:13px;color:#c9cede}

/* ===== TABLE ===== */
.table-scroll{overflow-x:auto;margin-top:44px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
table{width:100%;border-collapse:collapse;min-width:760px}
thead th{background:var(--ink);color:#fff;font-size:14px;font-weight:700;padding:16px 18px;text-align:left;white-space:nowrap}
tbody td{padding:15px 18px;font-size:14px;border-bottom:1px solid var(--line);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fafbff}
td.hl{color:var(--brand2);font-weight:700}
.badge-good{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:99px;background:rgba(0,224,176,.15);color:#067c63}
.badge-warn{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:99px;background:rgba(90,96,118,.12);color:var(--muted)}

/* ===== EVAL ===== */
.eval-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;margin-top:44px;align-items:start}
.eval-score{background:linear-gradient(150deg,var(--brand),var(--brand2));color:#fff;border-radius:24px;padding:38px;text-align:center;box-shadow:0 24px 50px rgba(108,43,255,.3)}
.eval-score .num{font-size:74px;font-weight:900;line-height:1}
.eval-score .num small{font-size:24px;font-weight:700;opacity:.8}
.eval-score .stars{font-size:26px;letter-spacing:6px;color:var(--yellow);margin:12px 0 6px}
.eval-score p{font-size:14px;opacity:.9}
.eval-points{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.eval-point{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;transition:transform .2s,box-shadow .2s}
.eval-point:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.eval-point h4{font-size:15px;margin-bottom:4px}
.eval-point p{font-size:13px;color:var(--muted)}

/* ===== CASES ===== */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.case-card{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .22s,box-shadow .22s;background:#fff}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-h)}
.case-card img{width:100%;height:260px;object-fit:cover}
.case-overlay{position:absolute;inset:auto 0 0 0;padding:22px;background:linear-gradient(transparent,rgba(16,19,28,.9));color:#fff}
.case-overlay h4{font-size:18px}
.case-overlay p{font-size:13px;color:#d5d9e6}
.square-card{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-top:24px;background:#fff}
.square-card img{width:100%;height:100%;object-fit:cover;min-height:320px}
.square-body{padding:36px;display:flex;flex-direction:column;justify-content:center}
.square-body h3{font-size:24px;margin-bottom:12px}
.square-body p{color:var(--muted);font-size:15px;margin-bottom:20px}

/* ===== PRICE / TOKEN ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.price-card{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:30px;transition:transform .22s,box-shadow .22s,border-color .22s;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-h)}
.price-card.pop{border-color:var(--brand);position:relative}
.price-card.pop::after{content:"推荐";position:absolute;top:-14px;right:22px;background:var(--brand);color:#fff;font-size:12px;font-weight:800;padding:5px 14px;border-radius:99px}
.price-card h3{font-size:17px;color:var(--muted);font-weight:700;margin-bottom:6px}
.price-card .p{font-size:36px;font-weight:900;line-height:1.1}
.price-card .p small{font-size:14px;color:var(--muted);font-weight:600}
.price-card ul{margin:20px 0 24px;display:grid;gap:11px}
.price-card li{font-size:14px;color:var(--ink2);padding-left:24px;position:relative}
.price-card li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:900}
.price-card .btn{margin-top:auto;justify-content:center}

/* ===== REVIEWS ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .22s,box-shadow .22s;display:flex;flex-direction:column}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.review-stars{color:var(--yellow);font-size:15px;letter-spacing:2px;margin-bottom:12px}
.review-text{font-size:14px;color:var(--ink2);flex:1}
.review-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;font-size:17px;background:linear-gradient(135deg,var(--brand),var(--brand2));flex:0 0 44px}
.review-user b{display:block;font-size:14px}
.review-user span{font-size:12px;color:var(--muted)}

/* ===== FAQ ===== */
.faq-list{margin-top:44px;max-width:900px;margin-left:auto;margin-right:auto;display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .2s,border-color .2s}
.faq-item.open{border-color:rgba(108,43,255,.4);box-shadow:var(--shadow)}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:20px 22px;font-size:16px;font-weight:700;color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;font-family:inherit}
.faq-q .plus{flex:0 0 26px;height:26px;border-radius:50%;background:var(--soft);display:grid;place-items:center;font-size:18px;transition:transform .25s,background .25s,color .25s}
.faq-item.open .plus{transform:rotate(135deg);background:var(--brand2);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--muted);font-size:14px}
.faq-a p{padding:0 22px 20px}

/* ===== ARTICLES ===== */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.article-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.article-meta{font-size:12px;font-weight:700;color:var(--brand2);letter-spacing:.08em;margin-bottom:10px}
.article-card h4{font-size:16px;margin-bottom:8px}
.article-card p{font-size:13px;color:var(--muted);flex:1}
.article-card a.more{margin-top:14px;font-size:13px;font-weight:700;color:var(--brand)}
.article-card a.more:hover{text-decoration:underline}
.wiki-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.wiki-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;transition:transform .2s}
.wiki-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.wiki-item b{display:block;font-size:15px;margin-bottom:4px;color:var(--brand2)}
.wiki-item span{font-size:13px;color:var(--muted)}

/* ===== FORM ===== */
.form-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;margin-top:44px;align-items:start}
.form-side{background:linear-gradient(160deg,var(--ink),var(--ink2));color:#fff;border-radius:22px;padding:36px;position:relative;overflow:hidden}
.form-side::after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(255,45,85,.5),transparent 70%);bottom:-100px;right:-80px}
.form-side h3{font-size:24px;margin-bottom:14px;position:relative;z-index:1}
.form-side p{font-size:14px;color:#c9cede;position:relative;z-index:1}
.contact-list{margin-top:24px;display:grid;gap:14px;position:relative;z-index:1}
.contact-list li{font-size:14px;display:flex;gap:10px;align-items:flex-start}
.contact-list b{color:var(--yellow);min-width:72px;font-weight:700}
.qr-box{margin-top:22px;position:relative;z-index:1;display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px}
.qr-box img{width:96px;height:96px;object-fit:cover;border-radius:10px;background:#fff}
.qr-box span{font-size:13px;color:#c9cede}
form.demand{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px;display:flex;flex-direction:column;gap:7px}
.field label{font-size:13px;font-weight:700;color:var(--ink2)}
.field input,.field select,.field textarea{font-family:inherit;font-size:14px;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;background:#fbfbfe;transition:border-color .18s,box-shadow .18s;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand2);box-shadow:0 0 0 4px rgba(108,43,255,.12);background:#fff}
.field textarea{resize:vertical;min-height:110px}
form.demand .btn{width:100%;justify-content:center;padding:15px}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;text-align:center}

/* ===== FRIEND LINKS ===== */
.links-flex{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.links-flex a{font-size:13px;font-weight:600;padding:9px 18px;border-radius:99px;background:#fff;border:1px solid var(--line);color:var(--ink2);transition:.18s}
.links-flex a:hover{background:var(--brand2);color:#fff;border-color:var(--brand2);transform:translateY(-2px)}

/* ===== CTA BAND ===== */
.cta-band{background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;border-radius:24px;padding:56px 44px;text-align:center;margin:0 20px;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.1);top:-160px;left:-80px}
.cta-band::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(255,212,0,.18);bottom:-150px;right:-60px}
.cta-band h2{font-size:clamp(24px,3.2vw,38px);font-weight:900;position:relative;z-index:1}
.cta-band p{margin:14px auto 26px;max-width:600px;font-size:15px;opacity:.92;position:relative;z-index:1}
.cta-band .btn{position:relative;z-index:1}

/* ===== FOOTER ===== */
footer{background:var(--ink);color:#aab0c4;padding:64px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.foot-brand .ai-page-logo{height:36px;margin-bottom:14px;filter:brightness(0) invert(1)}
.foot-brand p{font-size:13px;line-height:1.8}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-col a,.foot-col p{display:block;font-size:13px;margin-bottom:10px;transition:color .16s}
.foot-col a:hover{color:var(--yellow)}
.foot-bottom{margin-top:44px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#7c829a}

/* ===== FLOAT ===== */
.float-bar{position:fixed;right:20px;bottom:26px;z-index:200;display:flex;flex-direction:column;gap:12px}
.float-btn{width:52px;height:52px;border-radius:50%;border:none;cursor:pointer;display:grid;place-items:center;font-size:20px;color:#fff;box-shadow:0 10px 24px rgba(16,19,28,.2);transition:transform .18s,opacity .25s;background:var(--brand2)}
.float-btn:hover{transform:translateY(-4px) scale(1.05)}
.float-btn.kf{background:linear-gradient(135deg,var(--brand),var(--brand2))}
.float-btn.top{background:var(--ink);opacity:0;pointer-events:none}
.float-btn.top.show{opacity:1;pointer-events:auto}
.kf-pop{position:fixed;right:86px;bottom:26px;z-index:201;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:var(--shadow-h);width:220px;display:none}
.kf-pop.show{display:block;animation:fadeUp .22s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.kf-pop img{width:100%;border-radius:10px;margin-bottom:10px;background:#fff}
.kf-pop p{font-size:12px;color:var(--muted);text-align:center;word-break:break-all}

/* ===== RESPONSIVE ===== */
@media(max-width:1080px){
.hero-grid{grid-template-columns:1fr;gap:36px}
.hero-stats{grid-template-columns:repeat(4,1fr)}
.grid-3,.price-grid,.review-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
.steps{grid-template-columns:repeat(3,1fr)}
.network{grid-template-columns:repeat(2,1fr)}
.wiki-grid{grid-template-columns:repeat(2,1fr)}
.foot-grid{grid-template-columns:1fr 1fr}
.about-grid,.eval-wrap,.form-wrap{grid-template-columns:1fr}
.nav-links{display:none}
.burger{display:flex}
.nav-cta{display:none}
}
@media(max-width:760px){
.section{padding:60px 0}
.hero{padding:64px 0 60px}
.hero-stats{grid-template-columns:1fr 1fr}
.grid-3,.grid-2,.price-grid,.review-grid,.article-grid,.case-grid,.square-card,.form-row,.wiki-grid,.eval-points{grid-template-columns:1fr}
.steps{grid-template-columns:1fr}
.about-visual .img-pair{grid-template-columns:1fr}
.network{grid-template-columns:1fr 1fr}
.square-card img{min-height:220px;height:220px}
.cta-band{padding:40px 24px}
.float-btn{width:46px;height:46px;font-size:18px}
.kf-pop{right:76px;width:190px}
}
@media(max-width:460px){
.hero-stats{grid-template-columns:1fr}
.foot-grid{grid-template-columns:1fr}
.nav-links a{padding:8px 8px;font-size:13px}
}