:root{--ink:#15213b;--muted:#60708d;--line:#dce5f2;--bg:#f6f9ff;--white:#fff;--cyan:#09b8d6;--blue:#3856e8;--pink:#ed4f96;--green:#18a77a;--shadow:0 18px 45px rgba(29,62,126,.11)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
.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 var(--line);backdrop-filter:blur(16px)}
.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;min-width:150px}
.ai-page-logo{width:132px;display:block}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
.nav-links a{padding:8px 10px;font-size:13px;color:#40506d;transition:.25s}
.nav-links a:hover{color:var(--blue)}
.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:8px;padding:12px 20px;background:linear-gradient(100deg,var(--blue),var(--cyan));color:#fff;font-weight:700;box-shadow:0 10px 24px rgba(56,86,232,.2);transition:.25s;cursor:pointer}
.nav-cta:hover,.button:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(56,86,232,.3)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);padding:8px 10px;border-radius:7px;color:var(--ink)}
.hero{position:relative;overflow:hidden;padding:88px 0 76px;background:linear-gradient(135deg,#f8fbff 0%,#edf4ff 55%,#fff5fb 100%)}
.hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(56,86,232,.12);transform:rotate(24deg);pointer-events:none}
.hero:before{width:390px;height:390px;right:-120px;top:-180px;border-radius:42%}
.hero:after{width:260px;height:260px;left:-150px;bottom:-150px;border-radius:50%}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:1px}
.eyebrow:before{content:"";width:28px;height:2px;background:var(--pink)}
h1{font-size:clamp(38px,5vw,68px);line-height:1.12;letter-spacing:0;margin:18px 0 22px;max-width:680px}
h2{font-size:clamp(27px,3vw,42px);line-height:1.2;letter-spacing:0;margin:0 0 14px}
h3{font-size:19px;line-height:1.35;margin:0 0 9px}
.lead{font-size:18px;color:var(--muted);max-width:650px;margin:0 0 28px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.button.secondary{background:#fff;color:var(--blue);border:1px solid #cad7f7;box-shadow:none}
.hero-panel{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.signal{padding:22px;background:#fff;border:1px solid #e0e8f8;border-radius:12px;box-shadow:var(--shadow);animation:rise .7s both}
.signal:nth-child(2){margin-top:22px;animation-delay:.1s}.signal:nth-child(3){animation-delay:.2s}.signal:nth-child(4){margin-top:22px;animation-delay:.3s}
.signal strong{display:block;font-size:30px;color:var(--blue);line-height:1.2;margin-bottom:6px}
.signal span{display:block;color:var(--muted);font-size:13px}
.section{padding:86px 0;position:relative}
.section.alt{background:#fff}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
.section-head p{max-width:590px;color:var(--muted);margin:0}
.intro{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:start}
.intro-copy p{color:var(--muted);margin:0 0 16px}
.pill-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.pill{padding:7px 12px;border:1px solid #cddbf5;border-radius:30px;color:#3b4f78;background:#f8fbff;font-size:13px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px;box-shadow:0 8px 25px rgba(42,72,132,.06);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9cbf3}
.card p{color:var(--muted);font-size:14px;margin:0}
.service-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:9px;background:#e9f7ff;color:var(--blue);font-weight:800;margin-bottom:18px}
.service-card{min-height:188px}
.service-card:nth-child(3n+2) .service-icon{background:#fff0f7;color:var(--pink)}
.service-card:nth-child(3n) .service-icon{background:#eafaf3;color:var(--green)}
.step-list{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
.step{padding:25px 18px 10px;border-right:1px solid var(--line);position:relative}
.step:last-child{border-right:0}.step b{display:block;color:var(--pink);font-size:13px;margin-bottom:12px}.step p{font-size:14px;color:var(--muted);margin:0}
.solution-band{background:linear-gradient(115deg,#162d6a,#273f9e 55%,#08a9c6);color:#fff}
.solution-band .section-head p,.solution-band .card p{color:#dbe6ff}
.solution-band .card{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);box-shadow:none}
.solution-band .card h3{color:#fff}
.case-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
.media-card{overflow:hidden;padding:0}.media-card img{display:block;width:100%;height:auto;max-width:100%;object-fit:contain}.media-card .media-copy{padding:20px}
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:#fff}
table{width:100%;min-width:760px;border-collapse:collapse;text-align:left}
th,td{padding:16px 18px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
th{background:#eef4ff;color:#29428d;font-size:13px}tr:last-child td{border-bottom:0}.mark{color:var(--green);font-weight:800}.score{display:flex;align-items:center;gap:18px;margin-bottom:22px}.score strong{font-size:50px;color:var(--blue);line-height:1}.stars{color:#f39b28;font-size:23px;letter-spacing:2px}
.match-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;align-items:start}
.match-note{padding:28px;border-left:4px solid var(--cyan);background:#eefaff}
.match-note p{color:var(--muted);margin:0}
form{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}
label{font-size:13px;font-weight:700;color:#40506d}
input,select,textarea{width:100%;padding:12px 13px;border:1px solid #cdd8e9;background:#fff;border-radius:7px;color:var(--ink);font:inherit;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(9,184,214,.12)}
textarea{min-height:120px;resize:vertical}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:17px 19px}
summary{cursor:pointer;font-weight:700;padding-right:18px}details p{color:var(--muted);font-size:14px;margin:12px 0 0}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{position:relative}.review:before{content:"“";font-size:52px;color:#b8c9f4;line-height:.7}.review p{margin:7px 0 17px;color:#425474;font-size:14px}.review small{color:var(--blue);font-weight:700}
.article-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.article-list a{background:#fff;border:1px solid var(--line);padding:18px;border-radius:8px;font-size:14px;transition:.25s}.article-list a:hover{border-color:var(--cyan);color:var(--blue);transform:translateY(-3px)}
.contact-strip{display:flex;justify-content:space-between;align-items:center;gap:22px;padding:28px 32px;background:linear-gradient(110deg,#eaf8ff,#fff1f8);border:1px solid #d8e6f8;border-radius:12px}
.contact-strip p{margin:5px 0 0;color:var(--muted)}
.footer{background:#17264a;color:#dce7ff;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr 1fr;gap:28px}.footer h3{color:#fff;font-size:16px}.footer p,.footer a{color:#b8c8e8;font-size:13px}.footer a{display:block;margin:6px 0}.qr{width:108px;max-width:100%;height:auto;display:block;border-radius:6px}.copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:32px;padding-top:18px;font-size:12px;color:#9dafd0}
.float-contact{position:fixed;right:18px;bottom:20px;z-index:15;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px;box-shadow:var(--shadow);text-align:center;font-size:12px;color:var(--blue)}.float-contact img{width:76px;display:block;margin-bottom:4px}
.reveal{opacity:0;transform:translateY(18px);transition:.65s}.reveal.show{opacity:1;transform:none}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@media(max-width:980px){.nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 18px}.nav-links.open{display:flex;justify-content:flex-start}.menu-toggle{display:block}.nav-cta{display:none}.hero-grid,.intro,.match-grid{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}.step-list{grid-template-columns:repeat(3,1fr);border-top:0}.step{border-bottom:1px solid var(--line)}.case-grid{grid-template-columns:1fr}.article-list{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.hero{padding:64px 0 56px}h1{font-size:39px}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:12px}.grid-3,.grid-4,.review-grid,.faq-list,.article-list{grid-template-columns:1fr}.hero-panel{gap:10px}.signal{padding:17px}.signal strong{font-size:25px}.step-list{grid-template-columns:1fr 1fr}.step:nth-child(2n){border-right:0}.contact-strip{display:block;padding:24px}.contact-strip .button{margin-top:18px}form{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr}.nav-links a{padding:9px 8px}}