*{margin:0;padding:0;box-sizing:border-box}
:root{
--red:#e01f2d;
--red-deep:#b3121e;
--red-soft:#fff1f1;
--ink:#1c1414;
--ink-soft:#5b4a4a;
--line:#f0dada;
--bg:#fff9f7;
--paper:#ffffff;
--radius:16px;
--container:1180px;
}
html{scroll-behavior:smooth}
body{
font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
background:
radial-gradient(circle at 12% 0%,#ffe7e4 0,rgba(255,231,228,0) 42%),
radial-gradient(circle at 92% 12%,#ffe0dc 0,rgba(255,224,220,0) 38%),
linear-gradient(180deg,#fff9f7 0%,#fffafa 55%,#fff6f4 100%);
color:var(--ink);
line-height:1.7;
-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:78px 0}
.section-head{max-width:760px;margin:0 auto 42px;text-align:center}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.18em;color:var(--red-deep);font-weight:700;background:var(--red-soft);border:1px solid var(--line);padding:5px 14px;border-radius:999px;margin-bottom:16px}
.section-head h2{font-size:clamp(24px,3.2vw,36px);line-height:1.32;letter-spacing:.01em;color:var(--ink);font-weight:800}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:15px}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,250,248,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .ai-page-logo{max-height:38px;width:auto}
.brand-text{font-weight:800;font-size:17px;color:var(--red-deep);letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:center;flex:1}
.nav-links a{font-size:14px;color:var(--ink-soft);padding:8px 10px;border-radius:8px;transition:color .25s,background .25s}
.nav-links a:hover{color:var(--red);background:var(--red-soft)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:700;font-size:14px;padding:11px 22px;border:1px solid transparent;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s,color .25s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;box-shadow:0 10px 24px -12px rgba(224,31,45,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -12px rgba(224,31,45,.95)}
.btn-ghost{background:#fff;color:var(--red-deep);border-color:var(--line)}
.btn-ghost:hover{background:var(--red-soft);transform:translateY(-2px)}
.btn:active{transform:scale(.97)}
.menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--red-deep);transition:transform .3s,opacity .3s}
.menu-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* hero */
.hero{position:relative;overflow:hidden;padding:70px 0 64px}
.hero::before{content:"";position:absolute;inset:0;background:
radial-gradient(520px 320px at 8% 12%,rgba(224,31,45,.12),transparent 70%),
radial-gradient(460px 300px at 92% 8%,rgba(224,31,45,.09),transparent 70%);
pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--red-deep);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 16px;box-shadow:0 6px 18px -12px rgba(224,31,45,.6)}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--red);display:inline-block;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.5)}}
.hero h1{margin:20px 0 18px;font-size:clamp(30px,4.6vw,52px);line-height:1.2;font-weight:900;letter-spacing:.01em;color:var(--ink)}
.hero h1 em{font-style:normal;color:var(--red);position:relative}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;border-radius:6px;background:rgba(224,31,45,.16);z-index:-1}
.hero-desc{font-size:16px;color:var(--ink-soft);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-actions .btn{padding:14px 30px;font-size:15px}
.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:560px}
.metric{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 14px;box-shadow:0 10px 26px -22px rgba(120,20,30,.5)}
.metric strong{display:block;font-size:22px;color:var(--red-deep);font-weight:800;line-height:1.2}
.metric span{font-size:12.5px;color:var(--ink-soft)}
.hero-visual{position:relative;min-height:360px;display:flex;align-items:center;justify-content:center}
.orb{position:absolute;border-radius:50%;filter:blur(2px)}
.orb-a{width:280px;height:280px;background:radial-gradient(circle at 32% 28%,#ff6a72,#d81120 62%,#8c0a14);opacity:.16;animation:float 9s ease-in-out infinite}
.orb-b{width:170px;height:170px;background:radial-gradient(circle at 40% 40%,#ff8a8f,#e01f2d);opacity:.14;right:4%;top:6%;animation:float 12s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(0,-18px,0)}}
.stack-card{position:relative;z-index:2;width:100%;max-width:380px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 26px 60px -34px rgba(150,25,35,.55)}
.stack-card h3{font-size:15px;color:var(--red-deep);font-weight:800;margin-bottom:14px;letter-spacing:.02em}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12.5px;padding:6px 12px;border-radius:999px;background:var(--red-soft);color:var(--red-deep);border:1px solid var(--line);font-weight:600}
.chip-line{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px dashed var(--line);margin-top:12px;font-size:13.5px;color:var(--ink-soft)}
.chip-line b{color:var(--ink);font-weight:700}
.dot{width:8px;height:8px;border-radius:50%;background:var(--red);flex-shrink:0}

/* services */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .35s,box-shadow .35s,border-color .35s;position:relative;overflow:hidden}
.svc-card::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--red),#ff8b91);transition:width .4s}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px -26px rgba(150,25,35,.55);border-color:#f7c9cb}
.svc-card:hover::before{width:100%}
.svc-num{font-size:12px;font-weight:800;color:#fff;background:var(--red);width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.svc-card h3{font-size:17px;font-weight:800;margin-bottom:8px;color:var(--ink)}
.svc-card p{font-size:14px;color:var(--ink-soft)}

/* platform intro band */
.intro-band{background:linear-gradient(135deg,#fff2f0,#fff 55%,#ffeceb);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.intro-grid h2{font-size:clamp(23px,3vw,32px);line-height:1.35;margin-bottom:16px;font-weight:800}
.intro-grid p{color:var(--ink-soft);font-size:15px;margin-bottom:14px}
.intro-list{display:grid;gap:10px;margin-top:18px}
.intro-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink);align-items:flex-start}
.intro-list .tick{flex-shrink:0;width:20px;height:20px;border-radius:50%;background:var(--red);color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:3px;font-weight:800}
.intro-imgs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.intro-imgs .shot{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:0 16px 40px -30px rgba(150,25,35,.6)}
.intro-imgs .shot:first-child{grid-column:1 / -1}
.intro-imgs img{width:100%;aspect-ratio:16/9;object-fit:cover}
.intro-imgs .shot:first-child img{aspect-ratio:16/8}

/* metrics strip */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 22px;box-shadow:0 20px 48px -40px rgba(150,25,35,.7)}
.metric-strip div{text-align:center;border-right:1px dashed var(--line)}
.metric-strip div:last-child{border-right:0}
.metric-strip strong{display:block;font-size:26px;color:var(--red-deep);font-weight:900;line-height:1.2}
.metric-strip span{font-size:13px;color:var(--ink-soft)}

/* workflow */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:step}
.flow-step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px;position:relative;transition:transform .3s,box-shadow .3s}
.flow-step:hover{transform:translateY(-5px);box-shadow:0 20px 38px -28px rgba(150,25,35,.6)}
.flow-step .idx{font-size:12px;font-weight:800;color:var(--red);letter-spacing:.1em;margin-bottom:10px}
.flow-step h3{font-size:15.5px;font-weight:800;margin-bottom:6px}
.flow-step p{font-size:13px;color:var(--ink-soft)}

/* compare */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 20px 50px -40px rgba(150,25,35,.7)}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{padding:15px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
thead th{background:var(--red-soft);color:var(--red-deep);font-weight:800;font-size:13.5px;letter-spacing:.02em}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fffaf9}
.rate-badge{display:inline-flex;align-items:center;gap:6px;background:var(--red);color:#fff;font-weight:800;font-size:12.5px;padding:4px 12px;border-radius:999px}
.score{font-size:20px;font-weight:900;color:var(--red-deep)}
.score small{font-size:12px;color:var(--ink-soft);font-weight:600}

/* cases */
.case-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}
.case-card{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:0 18px 44px -34px rgba(150,25,35,.6)}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .6s}
.case-card:hover img{transform:scale(1.04)}
.case-body{padding:18px 20px}
.case-body h3{font-size:16.5px;font-weight:800;margin-bottom:6px}
.case-body p{font-size:13.5px;color:var(--ink-soft)}
.case-side{display:grid;gap:20px}
.case-side .case-card img{aspect-ratio:16/10}

/* articles */
.art-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.art-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;transition:transform .3s,box-shadow .3s}
.art-card:hover{transform:translateY(-5px);box-shadow:0 20px 40px -30px rgba(150,25,35,.6)}
.art-card .k{font-size:12px;color:var(--red-deep);font-weight:800;letter-spacing:.08em;margin-bottom:10px}
.art-card h3{font-size:15.5px;font-weight:800;margin-bottom:8px;line-height:1.5}
.art-card p{font-size:13.5px;color:var(--ink-soft)}
.art-links{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}
.art-links a{font-size:13px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;color:var(--ink-soft);transition:all .25s}
.art-links a:hover{background:var(--red-soft);color:var(--red-deep);border-color:#f7c9cb}

/* token price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.price-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;gap:10px}
.price-card:hover{transform:translateY(-6px);box-shadow:0 24px 46px -32px rgba(150,25,35,.6)}
.price-card .name{font-size:15px;font-weight:800;color:var(--ink)}
.price-card .num{font-size:28px;font-weight:900;color:var(--red-deep);line-height:1.1}
.price-card .num small{font-size:12.5px;color:var(--ink-soft);font-weight:600}
.price-card p{font-size:13px;color:var(--ink-soft)}
.price-card a{margin-top:auto;font-size:13.5px;font-weight:800;color:var(--red);display:inline-flex;gap:6px;align-items:center}
.price-card a:hover{gap:10px}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:14px;transition:transform .3s,box-shadow .3s}
.review:hover{transform:translateY(-5px);box-shadow:0 22px 44px -30px rgba(150,25,35,.55)}
.review .q{font-size:14.5px;color:var(--ink);line-height:1.75}
.review .who{display:flex;align-items:center;gap:10px;margin-top:auto}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#e01f2d,#ff8b91);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;flex-shrink:0}
.who b{display:block;font-size:13.5px}
.who span{font-size:12px;color:var(--ink-soft)}
.stars{color:#f0a020;font-size:13px;letter-spacing:2px}

/* faq */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .3s,border-color .3s}
.faq-item.open{border-color:#f2b8bb;box-shadow:0 18px 36px -30px rgba(150,25,35,.7)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:transparent;border:0;padding:18px 22px;font-size:15px;font-weight:700;color:var(--ink);cursor:pointer;text-align:left;font-family:inherit}
.faq-q .ic{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--red-soft);color:var(--red-deep);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;transition:transform .3s}
.faq-item.open .faq-q .ic{transform:rotate(45deg);background:var(--red);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--ink-soft)}

/* form */
.form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:0 26px 60px -46px rgba(150,25,35,.8)}
.form-info h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.35;margin-bottom:14px}
.form-info p{font-size:14.5px;color:var(--ink-soft);margin-bottom:18px}
.contact-lines{display:grid;gap:10px;font-size:13.5px}
.contact-lines div{display:flex;gap:8px;color:var(--ink-soft)}
.contact-lines b{color:var(--ink);font-weight:700;min-width:78px}
.contact-lines a{color:var(--red-deep);font-weight:700}
.qr-box{margin-top:18px;display:flex;align-items:center;gap:14px;background:var(--red-soft);border:1px solid var(--line);border-radius:14px;padding:14px}
.qr-box img{width:88px;height:88px;object-fit:cover;border-radius:10px;border:1px solid #fff}
.qr-box span{font-size:13px;color:var(--ink-soft)}
.qr-box b{display:block;font-size:14px;color:var(--ink);margin-bottom:4px}
form{display:grid;gap:14px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px;color:var(--ink)}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:#fffaf9;border-radius:10px;padding:12px 14px;font-size:14px;font-family:inherit;color:var(--ink);transition:border-color .25s,box-shadow .25s,background .25s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red);background:#fff;box-shadow:0 0 0 3px rgba(224,31,45,.12)}
.field textarea{min-height:110px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form .btn{justify-self:start;padding:13px 32px;font-size:15px}

/* footer */
.site-footer{background:#221213;color:#f7e9e8;padding:52px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .ai-page-logo{max-height:38px;width:auto;margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:#d5b9b8;line-height:1.8;max-width:320px}
.site-footer h4{font-size:14px;font-weight:800;margin-bottom:14px;color:#fff}
.site-footer ul{display:grid;gap:9px}
.site-footer ul a{font-size:13.5px;color:#d5b9b8;transition:color .25s}
.site-footer ul a:hover{color:#ff8b91}
.site-footer .contact-lines{color:#d5b9b8}
.site-footer .contact-lines b{color:#fff}
.site-footer .contact-lines a{color:#ffb3b6}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-tags span{font-size:12px;border:1px solid #4a2c2d;color:#d5b9b8;padding:4px 10px;border-radius:999px}
.footer-bottom{margin-top:34px;padding-top:20px;border-top:1px solid #3a2425;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:#c9a9a8}
.footer-bottom a{color:#ffb3b6}

/* floating */
.float-tools{position:fixed;right:18px;bottom:24px;z-index:80;display:flex;flex-direction:column;gap:10px}
.float-btn{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--red-deep);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 12px 28px -16px rgba(150,25,35,.8);transition:transform .25s,background .25s,color .25s}
.float-btn:hover{transform:translateY(-3px);background:var(--red);color:#fff;border-color:var(--red)}
.float-btn svg{width:20px;height:20px}
.back-top{opacity:0;pointer-events:none}
.back-top.show{opacity:1;pointer-events:auto}

@media (max-width:1024px){
.hero-inner{grid-template-columns:1fr;gap:36px}
.hero-visual{min-height:280px;order:-1}
.grid-3,.art-list,.review-grid,.price-grid{grid-template-columns:repeat(2,1fr)}
.flow{grid-template-columns:repeat(3,1fr)}
.intro-grid{grid-template-columns:1fr}
.case-grid{grid-template-columns:1fr}
.form-wrap{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.metric-strip{grid-template-columns:repeat(2,1fr)}
.metric-strip div{border-right:0;border-bottom:1px dashed var(--line);padding-bottom:12px}
.metric-strip div:nth-child(3),.metric-strip div:nth-child(4){border-bottom:0;padding-bottom:0}
.nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:12px 20px 18px;gap:2px;box-shadow:0 22px 40px -30px rgba(150,25,35,.7)}
.nav-links.show{display:flex}
.nav-links a{padding:11px 12px;border-radius:8px}
.menu-toggle{display:flex}
.nav-actions .btn-ghost{display:none}
}
@media (max-width:720px){
.section{padding:56px 0}
.hero{padding:48px 0 48px}
.hero-metrics{grid-template-columns:1fr 1fr}
.grid-3,.grid-2,.art-list,.review-grid,.price-grid{grid-template-columns:1fr}
.flow{grid-template-columns:1fr 1fr}
.hero-actions .btn{width:100%}
.form-row{grid-template-columns:1fr}
.form-wrap{padding:22px}
.footer-grid{grid-template-columns:1fr}
.intro-imgs{grid-template-columns:1fr}
.intro-imgs .shot:first-child{grid-column:auto}
.metric-strip{grid-template-columns:1fr 1fr;padding:20px 16px}
.nav-actions .btn-primary{padding:9px 16px;font-size:13px}
.brand-text{font-size:15px}
}