.topal-heating-guide{max-width:1000px;line-height:1.75}
.topal-heating-guide h1{line-height:1.16}
.topal-heating-guide h2{margin:2rem 0 .6rem;font-size:clamp(1.35rem,2.4vw,1.9rem)}
.topal-heating-guide h3{margin:1.2rem 0 .35rem;font-size:1.15rem}
.topal-heating-guide li{margin:.35rem 0}
.topal-guide-breadcrumb{display:flex;flex-wrap:wrap;gap:.6rem;font-size:.9rem;margin-bottom:1.2rem}
.topal-guide-warning{border-left:5px solid #c41a30;background:#fff0f0;padding:14px 22px;margin:1rem 0 1.3rem;color:#261b1f}
.topal-guide-warning p{margin:0}
.topal-guide-actions{display:flex;flex-wrap:wrap;gap:.7rem}
.topal-guide-source{font-size:.82rem;color:#48546a;margin-top:2rem}
/* V9.45 editorial guides: additive styles preserve legacy selectors. */
.topal-guide-wrap{max-width:1080px;margin-inline:auto}
.topal-guide-wrap h1{margin:.5em 0;font-size:clamp(1.8rem,3.5vw,2.7rem);line-height:1.2}
.topal-guide-wrap h2{font-size:clamp(1.2rem,2vw,1.55rem);margin:1.5em 0 .6em}
.topal-guide-wrap h3{font-size:1.05rem;margin:1.2em 0 .4em}
.topal-guide-wrap p,.topal-guide-wrap li{line-height:1.7}
.topal-guide-breadcrumb{margin-bottom:20px;font-size:.9rem}
.topal-guide-danger{border:2px solid #d4192f;border-radius:14px;background:#fff6f5;padding:18px 23px;margin:22px 0 34px}
.topal-guide-danger h2{margin:0 0 12px;color:#9f1324}
.topal-guide-danger ul{margin:0;padding-left:24px}
.topal-guide-danger li{margin:9px 0}
.topal-guide-section{margin:32px 0}
.topal-guide-steps{list-style:none;counter-reset:topal-help;display:grid;gap:17px;padding:0;margin:0}
.topal-guide-steps li{counter-increment:topal-help;position:relative;padding:18px 18px 18px 70px;background:#fff;border:1px solid #dae3ee;border-radius:12px;min-width:0}
.topal-guide-steps li::before{content:counter(topal-help);position:absolute;left:18px;top:17px;background:#0a54a8;color:#fff;width:35px;height:35px;border-radius:50%;font-weight:800;display:grid;place-items:center}
.topal-guide-steps li p{margin:.3em 0 0}
.topal-guide-renter,.topal-guide-cta{background:#fff;border:1px solid #d9e1eb;padding:18px 24px;border-radius:12px;margin:24px 0}
.topal-guide-actions{display:flex;flex-wrap:wrap;gap:12px}
.topal-guide-source{border-top:1px solid #dde3ed;padding-top:17px;font-size:.84rem;color:#495974}
.topal-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.topal-guide-card{min-width:0;background:#fff;border:1px solid #dae3ee;padding:20px;border-radius:12px}
.topal-guide-card svg{width:30px;height:30px;color:#0a54a8}
.topal-guide-card h3{margin:10px 0}
.topal-guide-card a{font-weight:700}
.topal-guide-teaser{padding:15px 0;background:#f1f6fc}
.topal-guide-teaser a,.topal-guide-form-hint a{font-weight:700}
.topal-guide-footer{display:flex;flex-wrap:wrap;gap:10px 20px;padding:15px 0}
.topal-guide-related a{margin-right:15px}
@media(max-width:800px){.topal-guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:570px){.topal-guide-grid{grid-template-columns:1fr}.topal-guide-danger,.topal-guide-renter,.topal-guide-cta{padding:14px}.topal-guide-steps li{padding-left:62px}.topal-guide-steps li::before{left:14px}}
@media print{
 header,footer,.topal-mobile-contact,.topal-floating,.floating-bar,.cookie-banner,.topal-guide-actions,.topal-guide-cta,.topal-guide-form-hint,.topal-guide-teaser,.topal-guide-footer,.topal-guide-breadcrumb{display:none!important}
 .topal-guide-wrap{max-width:none!important}.topal-guide-steps li,.topal-guide-danger{break-inside:avoid;box-shadow:none}
 body{background:#fff!important;color:#111!important}.topal-guide-section{break-inside:auto}
}

.topal-guide-sidebar{margin:15px 0;padding:14px;background:#edf4fb;border-radius:9px}.topal-guide-sidebar a{font-weight:750}

/* V9.46: original locally maintained diagram illustrations. */
.topal-guide-illustration{margin:14px 0 24px;padding:14px 20px;background:#f0f5fb;border:1px solid #dce5f0;border-radius:14px;display:flex;justify-content:center}
.topal-guide-illustration img{max-width:100%;height:auto;width:340px;aspect-ratio:3/2;object-fit:contain}
@media print{.topal-guide-illustration{display:none!important}}

/* V9.47: rich content remains confined and section images are decorative. */
.topal-guide-rich{min-width:0;overflow-wrap:anywhere}
.topal-guide-rich p{margin:.35em 0 .65em}
.topal-guide-rich a{overflow-wrap:anywhere}
.topal-guide-section-head{display:flex;align-items:flex-start;gap:18px;justify-content:space-between}
.topal-guide-section-head h2{min-width:0;flex:1}
.topal-guide-section-image{margin:0 0 10px;flex:0 0 min(30%,220px);max-width:220px}
.topal-guide-section-image img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;border-radius:10px;display:block}
@media(max-width:767px){.topal-guide-section-head{align-items:center;gap:12px}.topal-guide-section-image{flex:0 0 64px;width:64px;margin:0}.topal-guide-section-image img{width:64px;height:64px;aspect-ratio:1/1}}
@media print{.topal-guide-section-image{display:none!important}}

.topal-guide-locked{border:1px solid #cbd5e1;border-radius:10px;padding:12px;background:#f8fafc;color:#26374d}
.topal-guide-stale{background:#fff0f0;color:#a3192d;border:1px solid #d4192f;border-radius:8px;padding:12px}
.topal-guide-diff{max-height:340px;overflow:auto;overflow-wrap:anywhere}
.topal-guide-diff table{table-layout:fixed;width:100%}
.topal-guide-diff td{vertical-align:top;word-break:break-word;white-space:pre-wrap}
.topal-guide-diff del{color:#ad2233}.topal-guide-diff ins{color:#11602f}
.topal-guide-section-image-admin{background:#f5f8fc;padding:12px;margin:12px 0;border-radius:8px}
.topal-guide-section-image-admin img{object-fit:cover;border-radius:7px;max-width:100%}

/* V9.48: topic illustrations stay secondary to safety content. */
.topal-guide-lead-media{display:flex;align-items:center;gap:24px}
.topal-guide-lead-media>.lead{flex:1;min-width:0}
.topal-guide-lead-media>.topal-guide-illustration{flex:0 0 260px;max-width:280px}
.topal-guide-section-head{display:flex;align-items:flex-start;gap:16px}
.topal-guide-section-head>h2{flex:1;min-width:0}
.topal-guide-section-image{order:2;max-width:200px;flex:0 0 200px;margin:0}
.topal-guide-section-image img{max-width:100%;height:auto;object-fit:cover;border-radius:9px}
.topal-guide-footer{margin-left:auto;margin-right:auto;padding-left:0;padding-right:0}
@media(max-width:767px){.topal-guide-lead-media>.topal-guide-illustration{display:none}.topal-guide-section-head{align-items:center}.topal-guide-section-image{flex:0 0 64px;width:64px}.topal-guide-section-image img{width:64px;height:64px;object-fit:cover}}

/* V9.50: one responsive overview catalog rather than separate single-card rows. */
.topal-guide-catalog{margin-block:26px 34px}
.topal-guide-catalog>h2{margin:0 0 7px;color:#102b49}
.topal-guide-catalog-intro{margin:0 0 19px;color:#465873;max-width:68ch}
.topal-guide-catalog .topal-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px;align-items:stretch}
.topal-guide-catalog .topal-guide-card{display:flex;flex-direction:column;min-width:0;min-height:255px;overflow:hidden;border:1px solid #d6e0ed;border-radius:14px;background:#fff;padding:18px 19px;box-shadow:0 5px 16px rgba(10,38,74,.035);transition:box-shadow .15s ease,border-color .15s ease}
.topal-guide-catalog .topal-guide-card:hover,.topal-guide-catalog .topal-guide-card:focus-within{border-color:#7eabd4;box-shadow:0 7px 23px rgba(10,38,74,.095)}
.topal-guide-card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;min-height:69px}
.topal-guide-card-category{display:inline-flex;align-items:center;padding:5px 10px;border-radius:50px;background:#e9f3ff;color:#174e80;font-size:.77rem;font-weight:750;line-height:1.35}
.topal-guide-card-visual{margin:0;flex:0 0 110px;width:110px;height:73px}
.topal-guide-card-visual img{width:110px;height:73px;object-fit:contain;display:block;border-radius:8px}
.topal-guide-catalog .topal-guide-card h3{margin:9px 0 8px;line-height:1.35;font-size:1.09rem;color:#112d4b}
.topal-guide-card-title{color:inherit;text-decoration:none}
.topal-guide-card-title:hover{text-decoration:underline;text-underline-offset:3px}
.topal-guide-catalog .topal-guide-card>p{font-size:.9rem;margin:0 0 18px;color:#475972;line-height:1.55;overflow-wrap:anywhere}
.topal-guide-card-link{display:inline-flex;gap:8px;align-items:center;align-self:flex-start;margin-top:auto;color:#1157a0;font-weight:750;text-decoration:underline;text-underline-offset:3px;font-size:.91rem}
.topal-guide-card-link svg{width:17px;height:17px;flex:none}
.topal-guide-card-title:focus-visible,.topal-guide-card-link:focus-visible{outline:3px solid #1868bc;outline-offset:4px;border-radius:3px}
.topal-guide-prevention{margin-top:30px}
@media(max-width:1000px){.topal-guide-catalog .topal-guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.topal-guide-catalog .topal-guide-grid{grid-template-columns:minmax(0,1fr);gap:13px}.topal-guide-catalog .topal-guide-card{min-height:210px;padding:16px}.topal-guide-card-visual{width:96px;flex-basis:96px;height:64px}.topal-guide-card-visual img{width:96px;height:64px}}
@media(prefers-reduced-motion:reduce){.topal-guide-catalog .topal-guide-card{transition:none}}

/* Center sparse catalogs instead of leaving a visibly empty third grid column. */
@media(min-width:621px){
 .topal-guide-catalog .topal-guide-grid-count-1{grid-template-columns:minmax(0,1fr);max-width:395px;margin-inline:auto}
 .topal-guide-catalog .topal-guide-grid-count-2{grid-template-columns:repeat(2,minmax(0,1fr));max-width:795px;margin-inline:auto}
}