:root{--navy:#0b1f38;--ink:#14263d;--muted:#61738a;--blue:#176fd1;--blue2:#0d58ad;--pale:#f3f7fc;--line:#dce6f1;--white:#fff;--shadow:0 20px 60px rgba(15,50,85,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font:15px/1.65 "Microsoft YaHei","PingFang SC",system-ui,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}nav{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(220,230,241,.85);background:rgba(255,255,255,.92);backdrop-filter:blur(18px)}nav .wrap{height:72px;display:flex;align-items:center}.brand{display:flex;align-items:center;font-size:23px;font-weight:900;color:var(--blue)}.brand:before{content:"F";display:grid;place-items:center;width:36px;height:36px;margin-right:10px;border-radius:11px;background:linear-gradient(145deg,#1e7ce5,#57abff);color:#fff}.links{display:flex;align-items:center;gap:28px;margin-left:auto;color:#40566f}.links a:hover{color:var(--blue)}.nav-download{padding:9px 15px;border-radius:10px;background:#eaf4ff;color:var(--blue)!important;font-weight:800}
.hero{padding:92px 0 84px;overflow:hidden;background:radial-gradient(circle at 78% 23%,#cce4ff 0,transparent 29%),linear-gradient(145deg,#fbfdff,#edf6ff)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(380px,.9fr);align-items:center;gap:76px}.eyebrow,.section-title>span{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:2.2px}.hero h1{max-width:720px;margin:16px 0 22px;font-size:clamp(46px,5.2vw,68px);line-height:1.12;letter-spacing:-2px}.lead{max-width:700px;margin:0;color:var(--muted);font-size:18px;line-height:1.9}.hero-actions{display:flex;gap:12px;margin:32px 0 25px}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid #cbd9e8;border-radius:11px;padding:12px 19px;background:#edf3fa;color:#25435f;font-weight:800;cursor:pointer;transition:.18s}.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(23,111,209,.18)}.btn.primary{border-color:transparent;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff}.trust-row{display:flex;flex-wrap:wrap;gap:18px;color:#48617b;font-size:14px}.hero-panel{border:1px solid #bdd6ee;border-radius:27px;padding:20px;background:rgba(255,255,255,.86);box-shadow:0 30px 90px rgba(20,83,139,.16)}.scan-window{overflow:hidden;border:1px solid #c8d9e9;border-radius:18px;background:#0c1928}.scan-head{height:42px;display:flex;align-items:center;gap:7px;padding:0 14px;color:#9eb5cf;font-size:12px}.scan-head i{width:9px;height:9px;border-radius:50%;background:#4a6b8e}.scan-head span{margin-left:auto}.scan-body{height:260px;position:relative;background:radial-gradient(circle at 40% 45%,#1b4263,#07131f 67%)}.scan-box{position:absolute;border:3px solid}.scan-box.one{left:12%;top:20%;width:30%;height:38%;border-color:#ffb000}.scan-box.two{right:13%;bottom:17%;width:31%;height:36%;border-color:#36a9f0}.scan-link{position:absolute;left:39%;top:48%;width:29%;height:2px;transform:rotate(13deg);transform-origin:left;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.18)}.scan-link:after{content:"";position:absolute;right:-1px;top:-5px;width:9px;height:9px;border-top:2px solid #fff;border-right:2px solid #fff;transform:rotate(45deg)}.hero-metrics{display:grid;grid-template-columns:auto 1fr auto 1fr;align-items:center;gap:8px 12px;padding:18px 8px 2px}.hero-metrics b{font-size:27px;color:var(--blue)}.hero-metrics span{font-size:13px;color:var(--muted)}
.proof-strip{border-bottom:1px solid var(--line);background:#fff}.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0}.proof-grid>div{display:grid;gap:4px;padding:0 24px;border-right:1px solid var(--line)}.proof-grid>div:first-child{padding-left:0}.proof-grid>div:last-child{border:0}.proof-grid b{font-size:17px}.proof-grid span{color:var(--muted);font-size:13px}.section{padding:88px 0}.section-title{max-width:760px;margin:0 auto 42px;text-align:center}.section-title.left{text-align:left;margin-left:0}.section-title h2{margin:10px 0 12px;font-size:clamp(30px,3.6vw,42px);line-height:1.3;letter-spacing:-.5px}.section-title p{margin:0;color:var(--muted);line-height:1.85}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 12px 35px rgba(20,57,92,.05)}.feature{min-height:235px;padding:30px}.feature>b{color:#9fc4e8;font-size:31px}.feature h3{margin:38px 0 10px;font-size:21px}.muted{color:var(--muted)}
.plans-section{background:var(--pale)}.plans-section .wrap{width:min(1140px,calc(100% - 48px))}.plans{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;align-items:stretch;padding-top:10px}.plan{position:relative;display:flex;min-height:292px;flex-direction:column;padding:26px 16px;text-align:center;box-shadow:none}.plan.hot{border:2px solid var(--blue);background:linear-gradient(180deg,#eef7ff,#fff);box-shadow:0 20px 45px rgba(23,111,209,.16)}.recommend{position:absolute;top:-14px;left:50%;transform:translateX(-50%);white-space:nowrap;border-radius:18px;padding:5px 15px;background:var(--blue);color:#fff;font-size:12px;font-weight:800}.plan h3{min-height:48px;margin:10px 0 0;font-size:16px}.price{margin:13px 0;color:var(--blue);font-size:34px;font-weight:900}.price small{font-size:17px}.plan p{margin:6px 0}.plan .btn{width:100%;margin-top:auto}.taobao-card{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;width:100%;margin:28px auto 0;padding:24px 28px;border-color:#bed8f2;background:linear-gradient(130deg,#fff,#edf7ff);box-shadow:0 18px 38px rgba(23,111,209,.09)}.taobao-copy{min-width:0}.taobao-card h3{margin:6px 0 4px;font-size:21px}.taobao-card p{max-width:720px;margin:0;overflow-wrap:anywhere}.taobao-card .btn{min-width:178px;white-space:nowrap}
.use-cases{background:linear-gradient(180deg,#fff,#f4f8fd)}.case-grid{display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}.case-grid article{min-height:240px;padding:29px 24px;border-right:1px solid var(--line)}.case-grid article:last-child{border:0}.case-grid span{color:#72a9df;font-size:12px;font-weight:900}.case-grid h3{margin:47px 0 11px;font-size:19px}.case-grid p{margin:0;color:var(--muted)}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.steps-grid article{display:flex;gap:17px;min-height:155px;border:1px solid var(--line);border-top:3px solid #8fc1f3;border-radius:15px;padding:24px;background:#fff}.steps-grid article>b{display:grid;place-items:center;flex:0 0 40px;height:40px;border-radius:12px;background:#e7f2ff;color:var(--blue)}.steps-grid h3{margin:2px 0 7px}.steps-grid p{margin:0;color:var(--muted)}.text-btn{margin-top:7px;padding:0;border:0;background:none;color:var(--blue);font-weight:800;cursor:pointer}.tutorial-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:22px;border-radius:17px;padding:25px 28px;background:var(--navy);color:#fff}.tutorial-cta div{display:grid;gap:5px}.tutorial-cta span{color:#b9cbe0}
.download-section{padding:64px 0;background:linear-gradient(135deg,#081d34,#114d80)!important;color:#fff}.download-card{display:grid;grid-template-columns:minmax(0,1fr) 250px;align-items:center;gap:64px}.download-card h2{margin:10px 0 12px;font-size:38px}.download-card p{max-width:720px;margin:0;color:#c5d6e7}.download-meta{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}.download-meta span{border:1px solid rgba(255,255,255,.20);border-radius:20px;padding:6px 11px;background:rgba(255,255,255,.06);color:#e0edf8;font-size:12px}.download-card details{color:#b8cde1}.download-card code{display:block;overflow:auto;margin-top:8px;border-radius:8px;padding:10px;background:#051525;color:#9ed0ff}.download-action{display:grid;gap:10px;text-align:center}.download-action .big{padding:16px 22px}.download-action small{color:#b8cde1}
.faq{background:#f6f9fd}.faq-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(340px,.9fr);gap:58px;align-items:start}.faq details{margin:10px 0;border:1px solid var(--line);border-radius:12px;padding:17px 18px;background:#fff}.faq summary{font-weight:800;cursor:pointer}.faq details p{color:var(--muted)}.query-card{position:sticky;top:96px;display:grid;gap:12px;padding:32px}.query-card h3{margin:2px 0;font-size:24px}.form input{width:100%;border:1px solid #c8d6e5;border-radius:9px;padding:13px}.notice{border-left:4px solid var(--blue);padding:12px;background:#eaf4ff}.notice:empty{display:none}footer{padding:34px;text-align:center;color:var(--muted)}
.modal{display:none;position:fixed;inset:0;z-index:60;align-items:center;justify-content:center;padding:20px;background:rgba(5,18,32,.65)}.modal.open{display:flex}.modal-box{width:min(620px,100%);max-height:90vh;overflow:auto;border-radius:20px;padding:28px;background:#fff;box-shadow:0 35px 100px rgba(4,16,29,.45)}.close{float:right}.guide{line-height:2.1}.device-demo{border-radius:13px;padding:20px;background:#0d2035;color:#d6e9fb}
@media(max-width:1000px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero-panel{max-width:700px}.plans{grid-template-columns:repeat(3,1fr)}.case-grid{grid-template-columns:1fr 1fr}.case-grid article:nth-child(2){border-right:0}.case-grid article{border-bottom:1px solid var(--line)}.case-grid article:nth-last-child(-n+2){border-bottom:0}.faq-grid{gap:28px}}
@media(max-width:720px){.taobao-card{grid-template-columns:1fr;gap:16px;padding:22px}.taobao-card .btn{width:100%}.wrap,.plans-section .wrap{width:min(100% - 34px,1180px)}.links a:not(.nav-download){display:none}.hero{padding:60px 0}.hero h1{font-size:39px;letter-spacing:-1px}.hero-actions{align-items:stretch;flex-direction:column}.proof-grid{grid-template-columns:1fr 1fr}.proof-grid>div{padding:13px 10px}.proof-grid>div:nth-child(2){border-right:0}.section{padding:66px 0}.feature-grid,.steps-grid,.faq-grid{grid-template-columns:1fr}.plans{grid-template-columns:1fr 1fr}.case-grid{grid-template-columns:1fr}.case-grid article{min-height:auto;border-right:0!important;border-bottom:1px solid var(--line)!important}.case-grid article:last-child{border-bottom:0!important}.case-grid h3{margin-top:22px}.tutorial-cta{align-items:flex-start;flex-direction:column}.download-card{grid-template-columns:1fr;gap:25px}.download-card h2{font-size:31px}.download-action .btn{width:100%}.query-card{position:static}}
@media(max-width:480px){.hero h1{font-size:34px}.plans,.proof-grid{grid-template-columns:1fr}.proof-grid>div{border-right:0;border-bottom:1px solid var(--line);padding:12px 0}.proof-grid>div:last-child{border-bottom:0}.plan{min-height:255px}.hero-panel{padding:12px}.scan-body{height:210px}.hero-metrics{grid-template-columns:auto 1fr}}