:root{--ink:#172033;--muted:#5e6b80;--line:#e4e9f2;--paper:#f7f9fc;--white:#fff;--violet:#5a38e8;--pink:#ee3e87;--orange:#ff7b35;--cyan:#13b8c8;--green:#1f9d72;--shadow:0 18px 50px rgba(36,49,85,.1);--radius:16px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1180px,calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(228,233,242,.9);backdrop-filter:blur(16px)}
.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.ai-page-logo{width:122px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{padding:8px 10px;color:#48536a;font-size:13px;transition:.2s}
.nav-links a:hover{color:var(--violet)}
.nav-cta{background:var(--ink)!important;color:#fff!important;border-radius:8px!important;margin-left:8px!important;padding:10px 16px!important}
.menu-button{display:none;border:0;background:#f0f2f8;color:var(--ink);border-radius:8px;padding:9px 12px;font-size:20px}
.hero{position:relative;overflow:hidden;background:linear-gradient(130deg,#fff 0%,#f4f0ff 45%,#fff0f6 100%);padding:86px 0 54px}
.hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border-radius:50%}
.hero:before{width:360px;height:360px;right:-120px;top:-140px;background:rgba(238,62,135,.15)}
.hero:after{width:250px;height:250px;left:-110px;bottom:-100px;background:rgba(19,184,200,.13)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:64px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--violet);font-weight:700;font-size:13px;letter-spacing:1px}
.eyebrow:before{content:"";width:28px;height:3px;background:var(--pink);border-radius:3px}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,5vw,68px);line-height:1.12;letter-spacing:0;margin:18px 0 22px;max-width:700px}
.hero-copy{font-size:18px;color:#4f5c74;max-width:650px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:13px 20px;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(36,49,85,.14)}
.btn-primary{background:var(--violet);color:#fff}
.btn-dark{background:var(--ink);color:#fff}
.btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;color:#536078;font-size:13px}
.hero-note span{display:inline-flex;align-items:center;gap:7px}
.hero-note b{color:var(--green);font-size:17px}
.hero-panel{background:#182038;color:#fff;border-radius:22px;padding:26px;box-shadow:0 22px 50px rgba(34,27,76,.22);transform:rotate(1.2deg)}
.panel-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:20px;margin-bottom:22px}
.panel-label{color:#bfc8e9;font-size:13px}.panel-status{font-size:12px;color:#7ce2ba}
.signal{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}
.signal div{padding:15px 10px;border-radius:11px;background:rgba(255,255,255,.08)}
.signal strong{display:block;font-size:24px;color:#fff}.signal small{color:#bfc8e9}
.flow-line{display:flex;align-items:center;gap:8px;margin-top:20px}
.flow-line i{font-style:normal;padding:8px 10px;background:#fff;color:var(--ink);border-radius:7px;font-size:12px}.flow-line em{color:#ff7b8e;font-style:normal}
.section{padding:86px 0}
.section-alt{background:#fff}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:36px}
.section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:10px 0 0}
.section-head p{max-width:560px;color:var(--muted);margin-bottom:2px}
.kicker{font-size:12px;color:var(--pink);font-weight:800;letter-spacing:1.5px}
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.about-lead{font-size:21px;line-height:1.6;color:#263149}
.about-text{color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}
.metric{padding:20px;background:#fff;border:1px solid var(--line);border-top:3px solid var(--pink);border-radius:12px}
.metric strong{display:block;color:var(--violet);font-size:30px;line-height:1.2}.metric span{color:var(--muted);font-size:13px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:#fff;border:1px solid var(--line);padding:26px;border-radius:var(--radius);transition:.25s}
.feature:hover,.comment:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.feature-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;color:#fff;font-size:21px;background:linear-gradient(135deg,var(--violet),var(--pink));margin-bottom:18px}
.feature h3{font-size:19px;margin-bottom:8px}.feature p{color:var(--muted);font-size:14px;margin-bottom:0}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.service{padding:20px;background:#fff;border:1px solid var(--line);border-radius:12px}
.service h3{font-size:16px;margin-bottom:7px}.service p{color:var(--muted);font-size:13px;margin:0}
.service:nth-child(4n+1){border-top:3px solid var(--violet)}.service:nth-child(4n+2){border-top:3px solid var(--pink)}.service:nth-child(4n+3){border-top:3px solid var(--orange)}.service:nth-child(4n){border-top:3px solid var(--cyan)}
.network{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;padding:9px 14px;background:#fff;border:1px solid var(--line);border-radius:7px;color:#34425e;font-size:13px}
.tag:nth-child(3n){color:var(--violet);border-color:#cec6fa}.tag:nth-child(3n+1){color:#d42e71;border-color:#f4c6da}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
.step{position:relative;padding:30px 20px 10px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}.step-number{width:34px;height:34px;display:grid;place-items:center;background:var(--ink);color:#fff;border-radius:50%;font-weight:700;margin-bottom:17px}.step h3{font-size:17px}.step p{font-size:13px;color:var(--muted);margin:0}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden;transition:.25s}
.case-media{aspect-ratio:16/8;background:#eeeafc;overflow:hidden}.case-media img{width:100%;height:100%;object-fit:cover}
.case-body{padding:20px}.case-body h3{margin-bottom:7px}.case-body p{color:var(--muted);font-size:14px;margin:0}
.compare-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
.score-box{background:linear-gradient(135deg,#5a38e8,#d72f83);color:#fff;padding:30px;border-radius:18px}
.score-box .stars{font-size:25px;letter-spacing:3px;color:#ffe16c}.score-box strong{font-size:58px;display:block;line-height:1.1;margin:12px 0}.score-box p{color:#f5eafa}
.table-scroll{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;min-width:620px}th,td{text-align:left;padding:16px;border-bottom:1px solid var(--line);font-size:14px}th{background:#f4f1ff;color:var(--violet)}td:first-child{font-weight:700}tr:last-child td{border-bottom:0}.yes{color:var(--green);font-weight:700}
.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
.match-list{display:grid;gap:12px}.match-item{display:flex;gap:14px;padding:16px;background:#fff;border-left:4px solid var(--orange);border-radius:8px}.match-item b{min-width:76px;color:var(--ink)}.match-item span{color:var(--muted);font-size:14px}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.price{padding:25px;background:#fff;border:1px solid var(--line);border-radius:13px}.price h3{margin-bottom:8px}.price strong{font-size:27px;color:var(--violet)}.price p{font-size:13px;color:var(--muted);margin:10px 0 0}
.comments{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.comment{background:#fff;border:1px solid var(--line);padding:23px;border-radius:13px;transition:.25s}.comment blockquote{margin:0 0 18px;color:#34415a;font-size:14px}.comment footer{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}.avatar{width:35px;height:35px;display:grid;place-items:center;background:#f4cde0;color:#a4245d;border-radius:50%;font-weight:700}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:9px;overflow:hidden}.faq-item summary{cursor:pointer;padding:16px 18px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px}.faq-item summary:after{content:"+";color:var(--violet);font-size:20px;line-height:1}.faq-item[open] summary:after{content:"−"}.faq-item p{padding:0 18px 17px;margin:0;color:var(--muted);font-size:14px}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article{background:#fff;border:1px solid var(--line);padding:22px;border-radius:12px}.article small{color:var(--pink)}.article h3{font-size:17px;margin:10px 0}.article a{color:var(--violet);font-size:13px;font-weight:700}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}.contact-info{background:#182038;color:#fff;border-radius:16px;padding:30px}.contact-info h2{font-size:32px;line-height:1.2}.contact-info p{color:#c6cde2}.contact-list{display:grid;gap:15px;margin-top:25px}.contact-list div{border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:12px}.contact-list b{display:block;color:#fff}.contact-list span{font-size:14px;color:#c6cde2}.qr{width:120px;background:#fff;padding:8px;border-radius:8px;margin-top:18px}
.form-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid #d9dfeb;border-radius:8px;padding:12px 13px;font:inherit;color:var(--ink);background:#fff}.field textarea{min-height:125px;resize:vertical}.form-box .btn{margin-top:18px}
.footer{background:#131b31;color:#dbe1f1;padding:46px 0 22px}.footer-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:40px}.footer h3{color:#fff;font-size:17px}.footer p{font-size:13px;color:#aeb8d0}.footer-links{display:flex;flex-wrap:wrap;gap:8px 16px}.footer-links a{font-size:13px;color:#cbd3e7}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;font-size:12px;color:#9ba7c1;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
.float-tools{position:fixed;right:18px;bottom:20px;z-index:15;display:grid;gap:8px}.float-tools a{width:44px;height:44px;display:grid;place-items:center;background:var(--violet);color:#fff;border-radius:50%;box-shadow:0 8px 20px rgba(90,56,232,.28);font-size:18px}.float-tools a:last-child{background:var(--ink)}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}.reveal.visible{opacity:1;transform:none}
@media(max-width:1050px){.nav-links a{padding:8px 6px;font-size:12px}.hero-grid{gap:35px}.service-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:780px){.container{width:min(100% - 28px,620px)}.header-inner{min-height:66px}.menu-button{display:block}.nav-links{display:none;position:absolute;left:14px;right:14px;top:66px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;box-shadow:var(--shadow);align-items:stretch}.nav-links.open{display:grid}.nav-links a{padding:11px 12px}.nav-cta{margin-left:0!important}.hero{padding:60px 0 45px}.hero-grid,.about-grid,.compare-wrap,.match-grid,.contact-grid{grid-template-columns:1fr}.hero-panel{transform:none}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:14px}.metric-grid{grid-template-columns:repeat(2,1fr)}.feature-grid,.case-grid,.comments,.article-grid{grid-template-columns:1fr 1fr}.service-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr;border-top:0}.step{border-right:0;border-bottom:1px solid var(--line);padding:18px 0}.faq-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:20px}}
@media(max-width:480px){h1{font-size:38px}.hero-copy{font-size:16px}.feature-grid,.case-grid,.comments,.article-grid,.service-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.actions .btn{width:100%}.float-tools{right:12px}}