:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#14202b;background:#f5f7f9;--ink:#14202b;--muted:#64717d;--line:#dbe2e8;--blue:#1769ff;--blue2:#0f4fd1;--card:#fff}
*{box-sizing:border-box}body{margin:0;line-height:1.55;background:linear-gradient(180deg,#f8fafc 0,#f4f7f9 100%);color:var(--ink)}a{color:inherit}.wrap{width:min(1440px,calc(100% - 48px));margin:0 auto}
.site-header{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}.site-header .wrap{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-weight:800;text-decoration:none;font-size:21px;letter-spacing:-.02em}.site-header nav{display:flex;gap:20px;flex-wrap:wrap;font-size:14px}.site-header nav a{text-decoration:none;color:#33485b}
.page{margin:0;padding:clamp(46px,6vw,88px) 0}.page>h1{margin:0 0 26px;font-size:clamp(44px,6vw,84px);line-height:.98;letter-spacing:-.055em;font-weight:620;max-width:1100px}.content{max-width:none;font-size:17px}.content>p:first-child{font-size:20px;color:var(--muted);max-width:900px}
.wop-lead,.tool-shell{display:grid;grid-template-columns:minmax(0,.85fr) minmax(460px,1.15fr);gap:clamp(28px,5vw,72px);align-items:start;padding:clamp(28px,4vw,52px);background:#0e1c29;color:#eef5fb;border-radius:30px;box-shadow:0 30px 80px rgba(19,42,61,.14)}.wop-lead h2,.tool-copy h2{font-size:clamp(30px,4vw,54px);line-height:1.02;letter-spacing:-.04em;margin:8px 0 16px;font-weight:590}.wop-lead p,.tool-copy p{color:#b9c7d4;max-width:680px}.kicker{font-size:12px;text-transform:uppercase;letter-spacing:.13em;color:#80aaff;font-weight:800}
.fit-tool,.diag-tool{display:grid;gap:16px;padding:24px;background:#fff;color:var(--ink);border-radius:22px}.fit-tool label,.diag-tool label{display:grid;gap:7px;font-size:13px;font-weight:700;color:#526371}.fit-tool input,.fit-tool select,.diag-tool input{width:100%;min-height:50px;border:1px solid var(--line);border-radius:12px;background:#fbfcfd;padding:0 13px;font:600 16px inherit;color:var(--ink)}.dims{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.fit-tool button,.diag-tool button{min-height:52px;border:0;border-radius:13px;background:var(--blue);color:#fff;font-weight:800;cursor:pointer;padding:0 18px}.fit-tool button:hover,.diag-tool button:hover{background:var(--blue2)}
.fit-result{padding:17px 18px;border-radius:14px;background:#edf4ff;border:1px solid #cfe0ff;color:#193c6b}.fit-result b{display:block;font-size:24px;line-height:1.15;margin-bottom:5px}.fit-result p{margin:6px 0;color:#365474;font-size:14px}.fit-result ul{margin:10px 0 0;padding-left:20px}
.wop-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:32px 0 0}.wop-card{min-height:190px;padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--card);text-decoration:none;display:flex;flex-direction:column;justify-content:space-between;transition:.18s}.wop-card:hover{transform:translateY(-3px);box-shadow:0 18px 45px rgba(21,47,67,.08);border-color:#b8c6d1}.wop-card b{font-size:23px;letter-spacing:-.025em}.wop-card span{color:var(--muted);font-size:14px}
.wop-section{padding:clamp(54px,7vw,96px) 0}.wop-section h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.04em;font-weight:590;margin:0 0 24px}.wop-notes,.measure-steps,.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.wop-notes>div,.measure-steps>div,.spec-grid>div{padding:22px;border-top:2px solid #cdd8e1;background:rgba(255,255,255,.55)}.wop-notes b,.spec-grid b{font-size:18px}.wop-notes p,.measure-steps p,.spec-grid span{display:block;margin:8px 0 0;color:var(--muted);font-size:15px}.measure-steps b{color:var(--blue);font-size:13px}.spec-grid{grid-template-columns:repeat(4,1fr)}.category-intro{max-width:900px;font-size:22px;color:var(--muted);padding:8px 0 12px}
.site-footer{padding:34px 0 48px;color:#71808c;font-size:14px}
@media(max-width:1050px){.wop-lead,.tool-shell{grid-template-columns:1fr}.wop-grid{grid-template-columns:repeat(2,1fr)}.spec-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.wrap{width:min(100% - 28px,1440px)}.site-header{position:relative}.site-header .wrap{padding:16px 0;align-items:flex-start;flex-direction:column}.site-header nav{gap:10px 16px}.page{padding-top:36px}.page>h1{font-size:clamp(42px,14vw,64px)}.wop-lead,.tool-shell{padding:20px;border-radius:20px}.dims,.wop-grid,.wop-notes,.measure-steps,.spec-grid{grid-template-columns:1fr}.fit-tool,.diag-tool{padding:18px}}

.model-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.model-facts>div{padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff}.model-facts span{display:block;color:var(--muted);font-size:13px}.model-facts b{display:block;margin-top:5px;font-size:24px}.model-note{max-width:1000px}.source-line{font-size:13px;color:var(--muted)}.model-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.model-list a{display:block;padding:20px;border:1px solid var(--line);border-radius:16px;background:#fff;text-decoration:none}.model-list b{display:block;font-size:18px}.model-list span{display:block;margin-top:5px;color:var(--muted);font-size:14px}@media(max-width:850px){.model-facts,.model-list{grid-template-columns:1fr}}

.size-answer{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-bottom:24px}.size-answer>div{padding:24px;border:1px solid var(--line);border-radius:20px;background:#fff}.size-answer span{display:block;color:var(--muted);font-size:13px}.size-answer b{display:block;margin-top:5px;font-size:clamp(24px,3vw,38px);letter-spacing:-.03em}.guide-lead{max-width:950px;color:var(--muted);font-size:19px}.guide-link{display:inline-flex;margin-top:10px;color:var(--blue);font-weight:750;text-decoration:none}.guide-chips{display:flex;flex-wrap:wrap;gap:9px}.guide-chips a{padding:9px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;text-decoration:none;font-weight:700;font-size:14px}.guide-chips a:hover{border-color:#9cb7d0}.model-list .empty-note{grid-column:1/-1;color:var(--muted)}@media(max-width:700px){.size-answer{grid-template-columns:1fr}}

.fit-matches{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px}.fit-matches>strong{grid-column:1/-1;font-size:14px}.fit-matches a{display:block;padding:11px 12px;border:1px solid #cfe0ff;border-radius:11px;background:#fff;text-decoration:none}.fit-matches a b{font-size:14px;margin:0}.fit-matches a span{display:block;margin-top:3px;color:#5b7087;font-size:12px}.fit-empty{margin-top:12px!important}.fit-result{max-height:520px;overflow:auto}@media(max-width:700px){.fit-matches{grid-template-columns:1fr}}

.model-catalog-head{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:28px;border:1px solid var(--line);border-radius:24px;background:#fff}.model-catalog-head h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.04em;font-weight:590;margin:8px 0 12px}.model-catalog-head p{color:var(--muted)}.model-catalog-form{display:grid;gap:12px;align-content:center}.model-catalog-form label{display:grid;gap:7px;color:var(--muted);font-size:13px;font-weight:700}.model-catalog-form input,.model-catalog-form select{min-height:50px;border:1px solid var(--line);border-radius:12px;background:#fbfcfd;padding:0 13px;font:600 15px inherit}.model-catalog-count{padding:20px 0 12px;color:var(--muted);font-size:14px}.model-catalog{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.model-catalog a{display:flex;min-height:150px;flex-direction:column;justify-content:space-between;padding:19px;border:1px solid var(--line);border-radius:17px;background:#fff;text-decoration:none}.model-catalog a b{font-size:17px;line-height:1.2}.model-catalog a span{margin-top:12px;color:var(--muted);font-size:13px}@media(max-width:1050px){.model-catalog{grid-template-columns:repeat(3,1fr)}}@media(max-width:760px){.model-catalog-head{grid-template-columns:1fr;padding:20px}.model-catalog{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.model-catalog{grid-template-columns:1fr}}

.entity-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 22px;color:var(--muted);font-size:13px}.entity-nav a{color:inherit;text-decoration:none}.entity-nav a:hover{color:var(--blue)}.entity-nav span{opacity:.5}.entity-actions{display:flex;flex-wrap:wrap;gap:10px;padding:0 0 clamp(24px,4vw,54px)}.entity-actions a{display:inline-flex;padding:10px 15px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--blue);font-weight:750;text-decoration:none}.entity-actions a:hover{border-color:#9cb7d0}.related-models{padding-top:24px}