:root{font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:#17334d;background:#f6f9fd;font-synthesis:none;line-height:1.65;font-size:15px}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}a:focus-visible,summary:focus-visible{outline:3px solid #1388e1;outline-offset:5px;border-radius:5px}
.skip{position:absolute;top:8px;left:12px;padding:8px 16px;background:white;z-index:10;transform:translateY(-160%)}.skip:focus{transform:none}
.header,main,footer{width:min(1120px,calc(100% - 64px));margin-inline:auto}.header{display:flex;justify-content:space-between;align-items:center;min-height:100px;gap:20px}.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;line-height:1.1}.brand>span{font-size:23px;font-weight:800;letter-spacing:1.6px}.brand small{display:block;font-size:9px;font-weight:600;letter-spacing:3px;margin-top:7px;color:#6e8295}
nav{display:flex;align-items:center;gap:30px;font-size:14px;font-weight:600}nav a:hover{color:#0877c9}.agent-link{border:1px solid #d4e2ef;border-radius:9px;padding:9px 16px;background:#fff}.agent-link span{margin-left:6px}
.intro{text-align:center;padding:48px 0 42px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:3px;color:#3182ba;margin:0 0 14px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(32px,4.1vw,48px);line-height:1.25;letter-spacing:-1.6px;margin-bottom:16px;font-weight:800}h1 span{color:#147dc7}.intro-copy{color:#6d8091;font-size:16px;margin:0}.product{scroll-margin-top:24px}
.product-card{background:#fff;border:1px solid #e0e8f0;border-radius:20px;box-shadow:0 12px 36px #244b7410;display:grid;grid-template-columns:1fr 1fr;overflow:hidden}.product-copy{padding:36px 38px}.product-heading{display:flex;align-items:center;gap:15px;margin-bottom:22px}.category{display:block;font-size:11px;color:#71879c;margin-bottom:1px}.product-heading h2{font-size:31px;margin:0;line-height:1.4}.description{font-size:15px;color:#577086;max-width:430px;margin-bottom:19px;line-height:1.9}.features{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:7px;color:#365874;font-size:14px}.features li::before{content:"✓";display:inline-block;color:#1685ce;margin-right:10px;font-weight:700}.browsers{font-size:11px;color:#75899b;margin-bottom:23px}.download button{display:inline-flex;gap:28px;align-items:center;justify-content:center;min-height:46px;padding:11px 22px;background:#e8f1fa;border:1px solid #d5e5f3;border-radius:9px;color:#587b99;cursor:not-allowed;font-weight:700;opacity:1}.download button span{font-size:19px}.download p{font-size:11px;color:#8193a4;margin:10px 0 0}
.product-visual{margin:0;background:linear-gradient(145deg,#eaf3fc,#f2f7fc);display:flex;flex-direction:column;justify-content:center;padding:36px 26px;min-width:0}.app-preview{display:flex;border-radius:13px;overflow:hidden;min-height:332px;border:1px solid #d7e3ee;box-shadow:0 12px 28px #214d7319;background:#fff;text-align:left}.app-sidebar{width:98px;flex-shrink:0;padding:18px 11px 12px;background:linear-gradient(155deg,#10334d,#154a66);color:#d7e9f5;display:flex;align-items:center;flex-direction:column}.app-sidebar strong{font-size:13px;margin:2px 0 18px;letter-spacing:2px}.app-nav{width:100%;display:grid;gap:5px}.app-nav span{font-size:10px;padding:7px 8px;border-radius:6px}.app-nav .selected{background:#1d719c;color:#fff}.app-sidebar>small{margin-top:auto;padding-top:18px;font-size:9px;color:#9cc2d8}.app-content{padding:25px 20px;min-width:0;flex:1}.app-top{display:flex;justify-content:space-between;align-items:center;gap:6px}.app-top h3{font-size:19px;margin:0}.app-top>span{font-size:8px;color:#758da2;background:#f1f6fa;border-radius:5px;padding:3px 5px;white-space:nowrap}.app-subtitle{font-size:10px;color:#8b9cab;margin:8px 0 18px}.site-row{display:flex;align-items:center;gap:10px;border:1px solid #e5edf4;border-radius:8px;padding:12px 11px;margin-bottom:10px}.site-row>b{font-size:12px;background:#e8f5ff;color:#449bd0;width:28px;height:31px;border-radius:7px;display:grid;place-items:center}.site-row:nth-of-type(3)>b{background:#e9f6f3;color:#4b9f90}.site-row strong{display:block;font-size:11px}.site-row small{display:block;font-size:8px;color:#91a2b0;margin-top:2px}.site-row i{margin-left:auto;width:5px;height:5px;border-radius:50%;background:#5bb3a1}.app-note{background:#f3f7fb;padding:13px;border-radius:7px;margin-top:18px}.app-note strong{font-size:10px;color:#58758e}.app-note p{font-size:9px;color:#7b91a5;margin:5px 0 0}figcaption{text-align:center;font-size:10px;color:#8093a5;margin-top:14px}.boundary{font-size:12px;line-height:1.8;color:#687f93;margin:18px 8px 0;text-align:center}
.guide{padding:44px 0 36px;border-bottom:1px solid #e0e8ef}.guide>h2,.faq>h2{font-size:21px;margin:0 0 22px;letter-spacing:-.4px}.guide ol{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.guide li{display:flex;gap:14px}.step{font-size:12px;font-weight:700;color:#2a89c8;padding-top:3px}.guide h3{font-size:14px;margin:0 0 6px}.guide li p{font-size:12px;color:#788b9c;line-height:1.9;margin:0}.faq{display:grid;grid-template-columns:1fr 2fr;gap:36px;padding:36px 0 46px}.questions{min-width:0}details{border-bottom:1px solid #e0e8ef}details:first-child{margin-top:-10px}summary{cursor:pointer;padding:13px 24px 13px 0;position:relative;list-style:none;font-size:14px;font-weight:600}summary::-webkit-details-marker{display:none}summary::after{content:"+";position:absolute;right:3px;font-weight:400;font-size:18px;color:#5c89ae;top:8px}details[open] summary::after{content:"−"}details p{font-size:12px;color:#6c8296;line-height:1.9;padding-right:20px;margin:0 0 14px}
footer{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:98px;border-top:1px solid #e0e8ef}footer .brand>span{font-size:16px}footer .brand small{font-size:7px;letter-spacing:2px;margin-top:5px}footer p,footer>span{font-size:11px;color:#8495a4;margin:0}
@media(max-width:900px){.product-copy{padding:29px 25px}.product-visual{padding:27px 18px}.app-sidebar{width:82px;padding-inline:8px}.app-content{padding:22px 13px}.app-top>span{display:none}.guide ol{gap:18px}}
@media(max-width:680px){.header,main,footer{width:calc(100% - 36px)}.header{min-height:84px;gap:10px}.brand>span{font-size:17px;letter-spacing:1px}.brand>img{width:34px;height:34px}.brand{gap:6px}.brand small{font-size:7px;letter-spacing:2px;margin-top:5px}nav{gap:14px;font-size:11px}.agent-link{padding:7px 10px}.agent-link span{margin-left:2px}.intro{padding:34px 0}h1{font-size:32px;letter-spacing:-1px}.intro-copy{font-size:13px}.product-card{grid-template-columns:1fr;border-radius:16px}.product-copy{padding:26px}.product-heading{margin-bottom:15px}.product-heading h2{font-size:27px}.description{font-size:14px}.product-visual{padding:25px 23px}.app-preview{min-height:310px}.app-sidebar{width:82px}.app-content{padding:21px 14px}.app-top h3{font-size:17px}.boundary{font-size:11px;margin-inline:2px;text-align:left}.guide{padding:32px 4px}.guide ol{grid-template-columns:1fr;gap:23px}.guide h3{font-size:14px}.guide>h2,.faq>h2{font-size:20px}.faq{display:block;padding:30px 4px}.faq>h2{margin-bottom:20px}summary{font-size:13px}footer{min-height:100px;flex-wrap:wrap;gap:12px;padding:22px 0}footer p{display:none}footer>span{font-size:10px}}
@media(max-width:360px){nav{gap:8px}.agent-link{padding:6px 8px}.header,main,footer{width:calc(100% - 28px)}h1{font-size:29px}.product-copy{padding:23px}.product-visual{padding:22px 14px}}