.ptc-core-hub,.ptc-core-page{--tc-blue:#0d4f9e;--tc-navy:#102640;--tc-text:#536273;--tc-line:#dfe6ec;max-width:1120px;margin:28px auto 50px;color:var(--tc-navy)}
.ptc-core-hero{padding:34px;border-radius:14px;background:linear-gradient(135deg,#0e315d,#0d5ead);color:#fff}.ptc-core-hero>span{color:#a9d0f4;font-size:11px;font-weight:900;letter-spacing:.1em}.ptc-core-hero h2{margin:6px 0 9px;color:#fff;font-size:38px}.ptc-core-hero p{max-width:760px;margin:0;color:#dcecff;font-size:16px;line-height:1.6}
.ptc-core-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}.ptc-core-cards>a{display:grid;grid-template-columns:62px 1fr;gap:14px;align-items:center;padding:20px;border:1px solid var(--tc-line);border-radius:12px;background:#fff;color:var(--tc-navy)!important;text-decoration:none!important;box-shadow:0 5px 18px rgba(18,45,72,.06)}.ptc-core-cards>a:hover{border-color:#a9bfd4;transform:translateY(-2px)}.ptc-core-symbol{display:grid;place-items:center;width:58px;height:58px;border-radius:12px;background:#e9f3fd;color:var(--tc-blue);font-size:20px;line-height:.8}.ptc-core-symbol small{font-size:14px}.ptc-core-symbol--iso{color:#cf8b21}.ptc-core-symbol--fault{background:#fff0e9;color:#c4512f}.ptc-core-cards span>small,.ptc-core-cards span>strong,.ptc-core-cards span>em{display:block}.ptc-core-cards span>small{color:#7a8998;font-size:9px}.ptc-core-cards span>strong{margin:4px 0 6px;font-size:16px}.ptc-core-cards span>em{color:var(--tc-text);font-size:11px;font-style:normal;line-height:1.45}
.ptc-core-breadcrumb{display:flex;gap:8px;margin-bottom:18px;color:#7a8998;font-size:12px}.ptc-core-breadcrumb a{color:var(--tc-blue);text-decoration:none}.ptc-core-lead{padding:21px 24px;border-left:4px solid var(--tc-blue);background:#f2f7fc;color:#34495d;font-size:18px;line-height:1.65}.ptc-core-defs,.ptc-core-iso-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:22px 0}.ptc-core-defs section,.ptc-core-iso-grid section{display:grid;grid-template-columns:60px 1fr;gap:15px;align-items:center;padding:19px;border:1px solid var(--tc-line);border-radius:11px;background:#fff}.ptc-core-defs section>b,.ptc-core-iso-grid section>b{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:var(--tc-blue);color:#fff;font-size:21px}.ptc-core-defs h2,.ptc-core-iso-grid h2{margin:0 0 5px;font-size:19px}.ptc-core-defs p,.ptc-core-iso-grid p{margin:0;color:var(--tc-text);font-size:13px;line-height:1.5}.ptc-core-figure{padding:15px;border:1px solid var(--tc-line);border-radius:12px;background:#f8fafb;text-align:center}.ptc-core-figure img{display:block;width:100%;max-height:560px;object-fit:contain}.ptc-core-figure figcaption{margin-top:9px;color:#738291;font-size:12px}.ptc-core-section{margin:20px 0;padding:23px;border:1px solid var(--tc-line);border-radius:11px;background:#fff}.ptc-core-section h2{margin:0 0 9px;font-size:21px}.ptc-core-section p,.ptc-core-section li{color:var(--tc-text);line-height:1.65}.ptc-core-formulas{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.ptc-core-formulas code{padding:11px 14px;border-radius:7px;background:var(--tc-navy);color:#fff}.ptc-core-example{padding:14px;border-left:3px solid #45994e;background:#f0f6ed}.ptc-core-example p{margin:4px 0 0}.ptc-core-next{display:block;margin-top:24px;padding:18px 20px;border-radius:10px;background:var(--tc-navy);color:#fff!important;text-align:right;text-decoration:none!important;font-weight:800}.ptc-core-iso-grid .iso-p{background:#166ee8}.ptc-core-iso-grid .iso-m{background:#d8b000;color:#111}.ptc-core-iso-grid .iso-k{background:#cf3d37}.ptc-core-iso-grid .iso-n{background:#45994e}.ptc-core-iso-grid .iso-s{background:#d67722}.ptc-core-iso-grid .iso-h{background:#656c74}
body:not(.home) #main-content>.container{width:min(1120px,calc(100% - 32px));max-width:none;padding-top:18px}body:not(.home) #main-content .container:before{display:none}body:not(.home) #left-area{width:100%;float:none;padding-right:0}body:not(.home) #sidebar{display:none}
@media(max-width:760px){.ptc-core-cards,.ptc-core-defs,.ptc-core-iso-grid{grid-template-columns:1fr}.ptc-core-hub,.ptc-core-page{margin:18px auto 36px}.ptc-core-hero{padding:25px 20px}.ptc-core-lead{padding:17px;font-size:16px}}@media(max-width:430px){.ptc-core-defs section,.ptc-core-iso-grid section{grid-template-columns:48px 1fr;padding:14px;gap:11px}.ptc-core-defs section>b,.ptc-core-iso-grid section>b{width:45px;height:45px;font-size:18px}}
.ptc-fault-hero{padding:36px;border-radius:14px;background:radial-gradient(circle at 86% 22%,rgba(242,140,40,.2),transparent 28%),linear-gradient(135deg,#102640,#174b70);color:#fff}.ptc-fault-hero>span{color:#8fc6ec;font-size:10px;font-weight:900;letter-spacing:.13em}.ptc-fault-hero h1{max-width:870px;margin:8px 0 12px;color:#fff;font-size:clamp(32px,5vw,48px);line-height:1.08;letter-spacing:-.035em}.ptc-fault-hero p{max-width:890px;margin:0;color:#d7e5ee;font-size:15px;line-height:1.7}
.ptc-fault-check{display:grid;grid-template-columns:repeat(4,1fr);margin:18px 0 44px;border:1px solid var(--tc-line);border-radius:11px;background:#fff;overflow:hidden}.ptc-fault-check>div{display:grid;grid-template-columns:34px 1fr;gap:10px;min-height:130px;padding:20px 17px;border-right:1px solid var(--tc-line)}.ptc-fault-check>div:last-child{border:0}.ptc-fault-check b{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#e7f2fb;color:var(--tc-blue);font-size:11px}.ptc-fault-check span,.ptc-fault-check strong,.ptc-fault-check small{display:block}.ptc-fault-check strong{margin:4px 0 6px;font-size:13px}.ptc-fault-check small{color:var(--tc-text);font-size:10px;line-height:1.5}
.ptc-fault-heading{margin:0 0 18px}.ptc-fault-heading span{color:#c4512f;font-size:9px;font-weight:900;letter-spacing:.12em}.ptc-fault-heading h2{margin:6px 0 0;font-size:29px}
.ptc-fault-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.ptc-fault-card{border:1px solid var(--tc-line);border-radius:11px;background:#fff;overflow:hidden;box-shadow:0 7px 22px rgba(16,38,64,.04)}.ptc-fault-card__title{display:grid;grid-template-columns:38px 76px 1fr;align-items:center;gap:12px;min-height:112px;padding:13px 16px;border-bottom:1px solid var(--tc-line);background:#f7f9fa}.ptc-fault-card__title>b{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:#dcebf6;color:var(--tc-blue);font-size:11px}.ptc-fault-card__title img{display:block;width:76px;height:82px;padding:4px;border:1px solid #d8e0e5;border-radius:7px;background:#fff;object-fit:contain}.ptc-fault-card__title h3{margin:0;color:var(--tc-navy);font-size:17px;line-height:1.3}.ptc-fault-card__body{display:grid;grid-template-columns:1fr 1.15fr;gap:0}.ptc-fault-card__body>div{padding:17px}.ptc-fault-card__body>div+div{border-left:1px solid var(--tc-line);background:#fbfcfd}.ptc-fault-card__body strong{display:block;margin-bottom:8px;color:#657687;font-size:9px;letter-spacing:.08em;text-transform:uppercase}.ptc-fault-card__body ul{margin:0;padding-left:15px}.ptc-fault-card__body li{margin:0 0 6px;color:#566777;font-size:11px;line-height:1.48}.ptc-fault-card__body li:last-child{margin-bottom:0}.ptc-fault-card__body>div:last-child li::marker{color:#45994e}.ptc-fault-card--break .ptc-fault-card__title>b{background:#ffebe5;color:#b63c25}.ptc-fault-card--surface .ptc-fault-card__title>b,.ptc-fault-card--stability .ptc-fault-card__title>b{background:#fff1dd;color:#bd6d12}.ptc-fault-card--coolant .ptc-fault-card__title>b{background:#e4f4f5;color:#147984}
.ptc-fault-note{display:grid;grid-template-columns:1fr 320px;align-items:center;gap:38px;margin-top:22px;padding:30px;border-radius:12px;background:linear-gradient(135deg,#0f2d42,#164d70);color:#fff}.ptc-fault-note span{color:#8fc6ec;font-size:9px;font-weight:900;letter-spacing:.1em}.ptc-fault-note h2{margin:6px 0 9px;color:#fff;font-size:23px}.ptc-fault-note p{margin:0;color:#cfdee7;font-size:12px;line-height:1.65}.ptc-fault-note code{padding:18px;border:1px solid rgba(255,255,255,.2);border-radius:8px;background:rgba(0,0,0,.17);color:#c9edaa;font-size:11px;line-height:1.6;white-space:normal}
.ptc-fault-source{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-top:18px;padding:20px 22px;border:1px solid var(--tc-line);border-radius:10px;background:#f8fafb}.ptc-fault-source strong{font-size:12px}.ptc-fault-source p{margin:4px 0 0;color:#748390;font-size:10px;line-height:1.5}.ptc-fault-source a{flex:0 0 auto;color:var(--tc-blue)!important;font-size:11px;font-weight:800;text-decoration:none!important}
@media(max-width:980px){.ptc-core-cards{grid-template-columns:1fr 1fr}.ptc-fault-check{grid-template-columns:1fr 1fr}.ptc-fault-check>div:nth-child(2){border-right:0}.ptc-fault-check>div:nth-child(-n+2){border-bottom:1px solid var(--tc-line)}.ptc-fault-note{grid-template-columns:1fr}}
@media(max-width:760px){.ptc-core-cards,.ptc-fault-grid{grid-template-columns:1fr}.ptc-fault-hero{padding:25px 20px}.ptc-fault-card__body{grid-template-columns:1fr}.ptc-fault-card__body>div+div{border-top:1px solid var(--tc-line);border-left:0}.ptc-fault-source{align-items:flex-start;flex-direction:column}}
@media(max-width:520px){.ptc-fault-check{grid-template-columns:1fr}.ptc-fault-check>div{min-height:0;border-right:0;border-bottom:1px solid var(--tc-line)}.ptc-fault-check>div:last-child{border-bottom:0}.ptc-fault-note{padding:23px 20px}.ptc-fault-heading h2{font-size:25px}}
@media(max-width:430px){.ptc-fault-card__title{grid-template-columns:32px 64px 1fr;gap:9px;padding:12px}.ptc-fault-card__title>b{width:30px;height:30px}.ptc-fault-card__title img{width:64px;height:70px}.ptc-fault-card__title h3{font-size:15px}}