:root{
  --primary:#5a2ee0;
  --primary-2:#8a3ffc;
  --accent:#00d4c8;
  --accent-2:#ff7a45;
  --pink:#ff4d94;
  --ink:#14122b;
  --ink-2:#3a3757;
  --muted:#6a6785;
  --line:#e8e5f5;
  --bg:#ffffff;
  --bg-soft:#f7f5ff;
  --bg-soft-2:#f0fbff;
  --radius:16px;
  --shadow-sm:0 2px 10px rgba(58,32,130,.06);
  --shadow:0 12px 32px rgba(58,32,130,.10);
  --shadow-lg:0 24px 60px rgba(58,32,130,.16);
  --grad:linear-gradient(120deg,#5a2ee0 0%,#8a3ffc 45%,#00d4c8 100%);
  --grad-warm:linear-gradient(120deg,#ff4d94 0%,#ff7a45 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s}
button{font-family:inherit;cursor:pointer;border:none;background:none}
h1,h2,h3,h4{line-height:1.35;font-weight:800;letter-spacing:.2px}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 22px}
section{position:relative}
.sec-pad{padding:88px 0}
.bg-soft{background:var(--bg-soft)}
.bg-soft-2{background:var(--bg-soft-2)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ai-page-logo{height:40px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:1px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{position:relative;padding:8px 11px;font-size:14px;color:var(--ink-2);font-weight:500;border-radius:8px;gap:0;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--primary);background:rgba(90,46,224,.06)}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 22px;border-radius:11px;font-weight:700;font-size:14px;transition:transform .2s,box-shadow .25s,background .25s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(90,46,224,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(90,46,224,.38)}
.btn-ghost{background:#fff;color:var(--primary);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--primary);transform:translateY(-2px)}
.btn-warm{background:var(--grad-warm);color:#fff;box-shadow:0 8px 22px rgba(255,90,120,.3)}
.btn-warm:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,90,120,.4)}
.btn:active{transform:scale(.97)}
.menu-toggle{display:none;flex-direction:column;gap:5px;padding:8px;border-radius:8px}
.menu-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 600px at 15% -10%,rgba(138,63,252,.16),transparent 60%),radial-gradient(900px 500px at 95% 0%,rgba(0,212,200,.16),transparent 55%),linear-gradient(160deg,#faf8ff 0%,#f3f0ff 45%,#eef9ff 100%);padding:80px 0 90px}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(2px);opacity:.5;pointer-events:none}
.hero::before{width:300px;height:300px;right:-80px;top:-60px;background:radial-gradient(circle,rgba(255,77,148,.18),transparent 70%)}
.hero::after{width:260px;height:260px;left:-100px;bottom:-80px;background:radial-gradient(circle,rgba(0,212,200,.2),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center;position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--primary);box-shadow:var(--shadow-sm);margin-bottom:22px}
.hero-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(0,212,200,.18);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(0,212,200,.18)}50%{box-shadow:0 0 0 8px rgba(0,212,200,.05)}}
.hero h1{font-size:48px;line-height:1.25;margin-bottom:20px;letter-spacing:.5px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:16px;color:var(--ink-2);max-width:600px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero-actions .btn{padding:15px 30px;font-size:15px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:26px}
.hero-metrics .m{display:flex;flex-direction:column}
.hero-metrics .m b{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-metrics .m span{font-size:12.5px;color:var(--muted)}
.hero-panel{position:relative;z-index:2}
.hero-card{background:#fff;border-radius:22px;padding:26px;box-shadow:var(--shadow-lg);border:1px solid rgba(232,229,245,.8);position:relative;overflow:hidden}
.hero-card::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(90,46,224,.04),transparent 40%,rgba(0,212,200,.05));pointer-events:none}
.hero-card h3{font-size:16px;margin-bottom:18px;display:flex;align-items:center;gap:8px}
.hero-card h3 .dot{width:10px;height:10px;border-radius:50%;background:var(--grad-warm)}
.model-tags{display:flex;flex-wrap:wrap;gap:9px}
.model-tags span{font-size:12.5px;padding:7px 13px;border-radius:9px;background:var(--bg-soft);color:var(--ink-2);font-weight:600;border:1px solid transparent;transition:.25s}
.model-tags span:hover{background:#fff;border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.hero-note{margin-top:20px;padding-top:16px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.hero-note b{color:var(--accent-2)}

/* ---------- Section heads ---------- */
.sec-head{text-align:center;max-width:760px;margin:0 auto 52px}
.sec-kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--primary);background:rgba(90,46,224,.08);padding:6px 16px;border-radius:999px;margin-bottom:16px}
.sec-head h2{font-size:34px;margin-bottom:16px}
.sec-head h2 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{color:var(--muted);font-size:15px}

/* ---------- Stats ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-card{background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:.3s;position:relative;overflow:hidden}
.stat-card::after{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.4s}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.stat-card:hover::after{transform:scaleX(1)}
.stat-card b{font-size:38px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:block;line-height:1.1}
.stat-card span{font-size:14px;color:var(--ink-2);font-weight:600;margin-top:8px;display:block}
.stat-card em{font-size:12.5px;color:var(--muted);font-style:normal}

/* ---------- Services ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.3s;position:relative;overflow:hidden}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(90,46,224,.3)}
.svc-ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:linear-gradient(135deg,rgba(90,46,224,.12),rgba(0,212,200,.12));color:var(--primary)}
.svc-ico svg{width:26px;height:26px}
.svc-card h3{font-size:18px;margin-bottom:10px}
.svc-card p{font-size:13.8px;color:var(--muted);margin-bottom:14px}
.svc-list{list-style:none;display:flex;flex-direction:column;gap:7px}
.svc-list li{font-size:13px;color:var(--ink-2);padding-left:20px;position:relative}
.svc-list li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--accent)}

/* ---------- Platform intro ---------- */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.intro-visual{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.intro-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);transition:.3s}
.intro-img:hover{transform:scale(1.02)}
.intro-img:first-child{grid-column:span 2}
.intro-img img{width:100%;height:100%;object-fit:cover}
.intro-txt h2{font-size:32px;margin-bottom:18px}
.intro-txt h2 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.intro-txt>p{color:var(--muted);margin-bottom:22px}
.intro-feat{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.intro-feat .f{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:12px;background:#fff;border:1px solid var(--line);transition:.25s}
.intro-feat .f:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.intro-feat .f i{color:var(--accent-2);font-style:normal;font-weight:800;font-size:16px;flex-shrink:0}
.intro-feat .f b{display:block;font-size:14px;margin-bottom:2px}
.intro-feat .f span{font-size:12.5px;color:var(--muted)}

/* ---------- Scenarios / tag cloud ---------- */
.scen-wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.scen-tag{padding:11px 20px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--ink-2);transition:.25s;cursor:default}
.scen-tag:hover{background:var(--grad);color:#fff;border-color:transparent;transform:translateY(-3px);box-shadow:var(--shadow)}

/* ---------- Process ---------- */
.timeline{position:relative;max-width:960px;margin:0 auto}
.timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:3px;background:linear-gradient(var(--primary),var(--accent));transform:translateX(-50%);border-radius:3px;opacity:.25}
.tl-item{position:relative;width:50%;padding:0 44px 40px 0}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 40px 44px}
.tl-dot{position:absolute;top:6px;right:-11px;width:20px;height:20px;border-radius:50%;background:#fff;border:4px solid var(--primary);z-index:2;box-shadow:0 0 0 5px rgba(90,46,224,.08)}
.tl-item:nth-child(even) .tl-dot{right:auto;left:-11px;border-color:var(--accent)}
.tl-card{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.3s}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.tl-card .step{font-size:12px;font-weight:800;color:var(--accent-2);letter-spacing:1px}
.tl-card h3{font-size:17px;margin:6px 0 8px}
.tl-card p{font-size:13.5px;color:var(--muted)}

/* ---------- Table ---------- */
.tbl-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;min-width:720px;font-size:14px}
th,td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--bg-soft);font-weight:800;font-size:13.5px;color:var(--ink)}
tbody tr:hover{background:rgba(90,46,224,.03)}
td strong{color:var(--primary)}
.rating-big{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stars{color:#ffb300;letter-spacing:2px}

/* ---------- Compare highlight ---------- */
.score-panel{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:44px}
.score-card{background:linear-gradient(160deg,#fff,#faf8ff);border-radius:var(--radius);padding:32px;text-align:center;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.score-card .num{font-size:52px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.score-card .lbl{font-size:14px;color:var(--muted);margin-top:10px}
.score-card .stars{font-size:24px;margin-top:8px}

/* ---------- Reviews ---------- */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev-card{background:#fff;border-radius:var(--radius);padding:26px;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.3s;display:flex;flex-direction:column}
.rev-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-avatar{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:17px;flex-shrink:0;background:var(--grad)}
.rev-card:nth-child(2n) .rev-avatar{background:var(--grad-warm)}
.rev-card:nth-child(3n) .rev-avatar{background:linear-gradient(120deg,#00b4d8,#48cae4)}
.rev-name{font-weight:700;font-size:14.5px}
.rev-role{font-size:12px;color:var(--muted)}
.rev-stars{color:#ffb300;font-size:13px;letter-spacing:2px;margin-bottom:10px}
.rev-card p{font-size:13.8px;color:var(--ink-2)}

/* ---------- Cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);transition:.3s}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
.case-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case-card:hover .case-img img{transform:scale(1.06)}
.case-body{padding:22px}
.case-body span{font-size:12px;font-weight:700;color:var(--accent-2)}
.case-body h3{font-size:16px;margin:6px 0 8px}
.case-body p{font-size:13px;color:var(--muted)}

/* ---------- Token pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.price-card{background:#fff;border-radius:var(--radius);padding:30px;border:1.5px solid var(--line);box-shadow:var(--shadow-sm);transition:.3s;display:flex;flex-direction:column}
.price-card.featured{border-color:var(--primary);box-shadow:var(--shadow);position:relative}
.price-card.featured::before{content:"推荐";position:absolute;top:-13px;right:24px;background:var(--grad-warm);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-card h3{font-size:17px;margin-bottom:6px}
.price-card .p-desc{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.price-card .p-amount{font-size:36px;font-weight:800;color:var(--primary);line-height:1}
.price-card .p-amount small{font-size:14px;color:var(--muted);font-weight:600}
.price-card ul{list-style:none;margin:22px 0;display:flex;flex-direction:column;gap:10px;flex:1}
.price-card ul li{font-size:13.5px;color:var(--ink-2);padding-left:22px;position:relative}
.price-card ul li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}

/* ---------- Service network ---------- */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.net-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.3s}
.net-card:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-4px)}
.net-card h3{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.net-card h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.net-card p{font-size:13px;color:var(--muted)}

/* ---------- Articles ---------- */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.art-card{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.3s}
.art-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.art-card .tag{font-size:12px;font-weight:700;color:var(--primary);background:rgba(90,46,224,.08);padding:4px 12px;border-radius:999px;display:inline-block;margin-bottom:12px}
.art-card h3{font-size:16px;margin-bottom:10px}
.art-card p{font-size:13px;color:var(--muted);margin-bottom:14px}
.art-link{font-size:13px;font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:5px}
.art-link:hover{gap:8px}
.ai-poster-articles{grid-column:1/-1}
.ai-poster-articles .art-card{width:100%}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
.faq-item:hover{border-color:rgba(90,46,224,.3)}
.faq-q{width:100%;text-align:left;padding:20px 24px;font-size:15px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--ink)}
.faq-q .ico{width:26px;height:26px;flex-shrink:0;border-radius:50%;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--primary);transition:.3s}
.faq-item.open .faq-q .ico{background:var(--grad);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--muted);font-size:14px}
.faq-a div{padding:0 24px 20px}
.faq-item.open .faq-a{max-height:320px}

/* ---------- Form ---------- */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form-info h2{font-size:30px;margin-bottom:16px}
.form-info h2 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.form-info>p{color:var(--muted);margin-bottom:26px}
.contact-list{display:flex;flex-direction:column;gap:16px}
.contact-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;transition:.25s}
.contact-item:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.contact-item .ci-ico{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,rgba(90,46,224,.12),rgba(0,212,200,.12));color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:800}
.contact-item b{display:block;font-size:14px;margin-bottom:2px}
.contact-item span{font-size:13px;color:var(--muted);word-break:break-all}
.contact-item .kefu-qr{width:88px;height:88px;object-fit:cover;border-radius:8px;margin-top:8px}
.form-card{background:#fff;border-radius:20px;padding:36px;border:1px solid var(--line);box-shadow:var(--shadow-lg)}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-sub{font-size:13px;color:var(--muted);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:13px;font-weight:700;color:var(--ink-2)}
.form-group label .req{color:var(--pink)}
.form-control{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff;transition:.2s}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(90,46,224,.1)}
textarea.form-control{resize:vertical;min-height:110px}
.form-card .btn{width:100%;padding:14px;font-size:15px;margin-top:8px}
.form-tip{font-size:12px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- CTA band ---------- */
.cta-band{background:var(--grad);border-radius:24px;padding:56px 48px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.1);top:-150px;right:-100px}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.08);bottom:-160px;left:-80px}
.cta-band h2{font-size:32px;margin-bottom:14px;position:relative}
.cta-band p{color:rgba(255,255,255,.9);margin-bottom:28px;position:relative;font-size:15px}
.cta-band .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative}
.cta-band .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.4)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.24)}
.cta-band .btn-warm{background:#fff;color:var(--primary)}

/* ---------- Footer ---------- */
.site-footer{background:#14122b;color:rgba(255,255,255,.72);padding:64px 0 0;font-size:13.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .ai-page-logo{height:38px;filter:brightness(0) invert(1)}
.footer-brand strong{font-size:17px;color:#fff}
.footer-col p{line-height:1.9;margin-bottom:8px}
.footer-col a{display:block;padding:6px 0;color:rgba(255,255,255,.72);transition:.2s}
.footer-col a:hover{color:var(--accent);padding-left:6px}
.footer-links-inline{display:flex;flex-wrap:wrap;gap:6px 16px}
.footer-links-inline a{display:inline-block}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:24px 0;text-align:center;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:center;margin-bottom:12px}
.footer-bottom .fb-links a:hover{color:var(--accent)}

/* ---------- Floating ---------- */
.floating{position:fixed;right:22px;bottom:26px;z-index:900;display:flex;flex-direction:column;gap:12px}
.float-btn{width:52px;height:52px;border-radius:14px;background:#fff;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;transition:.25s;border:1px solid var(--line);color:var(--primary)}
.float-btn:hover{background:var(--grad);color:#fff;transform:translateY(-3px)}
.float-btn svg{width:24px;height:24px}
.float-kefu{position:relative}
.float-kefu .kefu-pop{position:absolute;right:64px;bottom:0;width:190px;background:#fff;border-radius:14px;padding:14px;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateX(10px);transition:.25s;border:1px solid var(--line)}
.float-kefu:hover .kefu-pop{opacity:1;visibility:visible;transform:translateX(0)}
.float-kefu .kefu-pop img{width:100%;border-radius:8px;margin-bottom:8px}
.float-kefu .kefu-pop p{font-size:12px;color:var(--muted);text-align:center}
.back-top{opacity:0;pointer-events:none}
.back-top.show{opacity:1;pointer-events:auto}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:1080px){
  .hero h1{font-size:40px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cards-grid,.rev-grid,.case-grid,.price-grid,.art-grid{grid-template-columns:repeat(2,1fr)}
  .net-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .header-cta .btn-ghost{display:none}
  .site-header.mobile-open .nav-links{display:flex;flex-direction:column;position:absolute;top:70px;left:0;right:0;background:#fff;padding:16px 22px;box-shadow:var(--shadow);border-bottom:1px solid var(--line);gap:4px}
  .site-header.mobile-open .nav-links a{width:100%;padding:12px}
}
@media(max-width:860px){
  .hero-grid,.intro-grid,.form-wrap{grid-template-columns:1fr}
  .hero-panel{display:none}
  .timeline::before{left:12px}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 32px 42px}
  .tl-dot,.tl-item:nth-child(even) .tl-dot{left:2px;right:auto}
  .score-panel{grid-template-columns:1fr}
  .intro-visual{order:-1}
}
@media(max-width:640px){
  .sec-pad{padding:60px 0}
  .hero{padding:52px 0 64px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:14.5px}
  .hero-actions .btn{width:100%;justify-content:center}
  .sec-head h2{font-size:26px}
  .cards-grid,.rev-grid,.case-grid,.price-grid,.art-grid,.net-grid,.stats-grid,.intro-feat{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:40px 24px}
  .cta-band h2{font-size:24px}
  .form-card{padding:26px}
  .brand-text span{display:none}
  .floating{right:14px;bottom:16px}
  .float-btn{width:46px;height:46px}
  h1,h2,h3{word-break:break-word}
}