:root{--navy:#12365a;--blue:#1769aa;--blue2:#e8f3fb;--ink:#18232e;--muted:#607080;--paper:#fff;--soft:#f4f7f9;--line:#dbe3e9;--copper:#b77938;--max:1240px;--r:14px;--shadow:0 14px 40px rgba(21,54,84,.1)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;line-height:1.72}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}
.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}
.topbar{font-size:12px;color:#dce8f2;background:var(--navy)}
.topbar .wrap{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar a{color:#fff}
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(30,60,85,.05);backdrop-filter:blur(12px)}
.navin{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.06em;color:var(--navy)}
.mark{width:42px;height:42px;border-radius:8px;display:grid;place-items:center;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;font-family:Georgia,serif;font-size:19px;box-shadow:0 6px 14px rgba(18,54,90,.2)}
.brand small{display:block;color:#66798a;font-size:10px;font-weight:600;letter-spacing:.13em}
.links{display:flex;align-items:center;gap:21px;font-size:14px;font-weight:650}
.links a{padding:27px 0 23px;border-bottom:3px solid transparent}
.links a:hover,.links a[aria-current="page"]{color:var(--blue);border-color:var(--blue)}
.navcta,.btn{display:inline-flex;min-height:46px;align-items:center;justify-content:center;padding:0 22px;border-radius:7px;border:1px solid var(--blue);background:var(--blue);color:#fff;font-weight:750;cursor:pointer;transition:.2s}
.btn.alt{background:#fff;color:var(--navy);border-color:#a9bac8}.btn:hover,.navcta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(23,105,170,.18)}
.menu{display:none;background:none;color:var(--navy);border:0;font-size:26px}
.hero{min-height:680px;position:relative;display:grid;align-items:center;overflow:hidden;background:#edf4f8}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#fff 4%,rgba(255,255,255,.95) 42%,rgba(255,255,255,.26) 76%,rgba(255,255,255,.06))}
.heroimg{position:absolute;right:0;top:0;width:62%;height:100%;object-fit:cover}
.heroin{position:relative;z-index:2;padding:100px 0;display:grid;grid-template-columns:minmax(0,720px) 1fr}
.eyebrow{color:var(--blue);text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:800}
h1,h2,h3{line-height:1.22;margin:0;color:var(--navy)}
h1{font-size:clamp(44px,6.2vw,76px);letter-spacing:-.045em;max-width:860px}
h2{font-size:clamp(32px,4.3vw,52px);letter-spacing:-.025em}
h3{font-size:23px}
.lead{font-size:clamp(17px,1.8vw,20px);color:#506576;max-width:710px;margin:24px 0 32px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.proof{position:relative;z-index:3;width:min(calc(100% - 40px),var(--max));margin:-48px auto 0;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.proof div{padding:25px;border-right:1px solid var(--line)}.proof div:last-child{border:0}
.proof b{display:block;color:var(--blue);font-size:24px}.proof span{color:var(--muted);font-size:13px}
.section{padding:92px 0}.section.light{background:var(--soft)}
.sectionhead{display:flex;align-items:end;justify-content:space-between;gap:34px;margin-bottom:42px}
.sectionhead p{max-width:570px;color:var(--muted);margin:0}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:0 6px 25px rgba(31,62,88,.06);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#a9c9e2}
.card img{height:260px;width:100%;object-fit:cover}.cardbody{padding:27px}.card p{color:var(--muted);margin:10px 0 18px}.arrow{color:var(--blue);font-weight:750}
.process{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.process article{background:#fff;border:1px solid var(--line);border-top:4px solid var(--blue);padding:30px 24px;min-height:215px}
.process article:before{counter-increment:step;content:"0" counter(step);display:block;color:#79a7c9;font-size:18px;margin-bottom:34px;font-weight:800}
.banner{border-radius:18px;padding:clamp(34px,6vw,68px);background:linear-gradient(120deg,#e7f2fa,#fff);border:1px solid #c5ddeb;display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}.banner p{color:#526a7c}
.pagehero{padding:92px 0 68px;background:linear-gradient(120deg,#eef5f9,#fff);border-bottom:1px solid var(--line)}
.pagehero h1{font-size:clamp(40px,5.2vw,66px)}.crumb{color:#728493;font-size:13px;margin-bottom:26px}
.content{max-width:900px}.content h2{font-size:34px;margin:48px 0 17px}.content h3{margin:28px 0 9px}.content p,.content li{color:#4f6271}
.tablewrap{overflow:auto;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 5px 20px rgba(31,62,88,.05)}
table{width:100%;border-collapse:collapse;min-width:680px}th,td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line)}th{color:#fff;background:var(--navy);font-size:13px}tr:nth-child(even) td{background:#f7fafc}
.tool{border:1px solid #c9dce9;border-radius:16px;padding:clamp(24px,5vw,44px);background:#f7fafc;box-shadow:0 8px 28px rgba(31,62,88,.06)}
.toolgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}label{display:block;color:#40596c;font-size:13px;font-weight:650}
input,select,textarea{width:100%;margin-top:7px;background:#fff;color:var(--ink);border:1px solid #bdccd7;border-radius:7px;padding:13px 14px;min-height:48px}
input:focus,select:focus,textarea:focus{outline:3px solid rgba(23,105,170,.14);border-color:var(--blue)}textarea{min-height:135px;resize:vertical}
.result{margin-top:22px;padding:22px;border-radius:10px;background:#eaf6ef;border-left:4px solid #39845b}.result.warn{background:#fff7e7;border-color:#d49b33}.result.risk{background:#fff0ee;border-color:#bd5149}
.filter{display:flex;gap:8px;overflow:auto;padding-bottom:8px;margin-bottom:26px}.chip{white-space:nowrap;border:1px solid #b8c8d4;background:#fff;color:#405b70;border-radius:6px;padding:9px 15px;cursor:pointer}.chip.active{background:var(--navy);border-color:var(--navy);color:#fff}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.texture{position:relative;border-radius:12px;overflow:hidden;min-height:380px;background:#dce5eb;box-shadow:0 8px 25px rgba(30,60,85,.08)}
.texture img{width:100%;height:100%;position:absolute;object-fit:cover}.texture:after{content:"";position:absolute;inset:50% 0 0;background:linear-gradient(transparent,rgba(12,34,52,.92))}
.textureinfo{position:absolute;z-index:2;left:22px;right:22px;bottom:20px;color:#fff}.textureinfo h3{color:#fff}.textureinfo small{color:#b9dcf4}
.note{padding:16px 18px;border-left:4px solid var(--copper);background:#fff7ed;border-radius:7px;color:#6a533a}
.techstrip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#cad8e2;border:1px solid #cad8e2;margin-top:38px}.techstrip div{background:#fff;padding:24px}.techstrip strong{display:block;color:var(--navy);font-size:24px}.techstrip span{color:var(--muted);font-size:13px}
.specgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.spec{padding:24px;border:1px solid var(--line);background:#fff;border-radius:10px}.spec small{color:var(--blue);font-weight:800}.spec h3{margin:8px 0}.spec p{color:var(--muted)}
.footer{padding:64px 0 94px;background:#edf3f6;border-top:1px solid var(--line)}.footgrid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:50px}.footer p,.footer a{color:#607484;font-size:14px}.mobilebar{display:none}.hide{display:none!important}
@media(max-width:960px){.links{gap:12px;font-size:13px}.navcta{display:none}}
@media(max-width:850px){
 .topbar{display:none}.menu{display:block}.links{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;padding:14px 22px 22px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line);box-shadow:0 15px 25px rgba(30,60,85,.12)}.links.open{display:flex}.links a{padding:11px 0}
 .hero{min-height:670px;align-items:end}.heroimg{width:100%;height:49%;top:0}.hero:after{background:linear-gradient(0deg,#fff 0%,#fff 50%,rgba(255,255,255,.08) 78%)}.heroin{padding:300px 0 76px;display:block}h1{font-size:46px}.lead{font-size:17px}
 .proof{grid-template-columns:repeat(2,1fr);margin-top:-28px}.proof div:nth-child(2){border-right:0}.section{padding:68px 0}.sectionhead{display:block}.sectionhead p{margin-top:14px}
 .grid3,.grid2,.gallery,.specgrid{grid-template-columns:1fr}.process,.techstrip{grid-template-columns:1fr 1fr}.banner{grid-template-columns:1fr}.toolgrid{grid-template-columns:1fr}.footgrid{grid-template-columns:1fr;gap:24px}
 .mobilebar{display:grid;grid-template-columns:1fr 1fr;position:fixed;z-index:60;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 20px rgba(30,60,85,.12)}.mobilebar a{min-height:58px;display:grid;place-items:center;font-weight:750;color:var(--navy)}.mobilebar a:first-child{background:var(--blue);color:#fff}.footer{padding-bottom:100px}
}
@media(max-width:480px){.wrap{width:min(calc(100% - 28px),var(--max))}h1{font-size:39px}.proof div{padding:18px 13px}.process,.techstrip{grid-template-columns:1fr}.actions .btn{width:100%}.cardbody{padding:22px}}