/* One reading flow; clinical teaching material opens in context. */
.periodontal-page .guide-content p{line-height:1.9}
.perio-figure{margin:0;min-width:0;background:#f4f8f5;padding:12px;border-radius:6px;box-sizing:border-box}
.perio-figure figcaption{font-size:12px;line-height:1.8;color:var(--muted);margin:10px 3px 2px}
.perio-figure img{display:block;width:100%;height:auto;object-fit:contain}
.perio-condition-pair{grid-template-columns:minmax(0,1.2fr) minmax(250px,1fr)}
.perio-condition-pair .perio-figure{max-width:390px;justify-self:center}
.periodontal-page .perio-condition-brief h3{font-size:21px;margin:22px 0 6px;line-height:1.5}
.perio-condition-brief h3 span{display:block;font-size:13px;color:#6a8065;font-weight:400;margin-top:3px}
.periodontal-page .perio-condition-brief p{margin:0;font-size:14px}
.perio-case-grid,.perio-treatment-grid,.perio-healing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:24px 0}
.perio-case{min-width:0}
.periodontal-page .perio-case h3{font-size:20px;line-height:1.5;margin:0 0 14px}
.perio-case .perio-figure{height:auto;background:transparent;padding:0}
.perio-case-image{max-width:300px;margin:auto;background:#f3f6f4}
.perio-case-image img{height:330px;width:100%;object-fit:contain}
.perio-case figcaption{font-size:13px;margin-top:16px}
.periodontal-page .perio-caption-note{font-size:12px;line-height:1.8;color:var(--muted);margin:14px 0}
.perio-look{border-top:1px solid #d7dfce;padding-top:20px;margin-top:24px}
.periodontal-page .perio-look h3{font-size:19px;margin:0 0 12px}
.perio-look ul{padding-left:20px;margin:0;font-size:14px;color:var(--muted);line-height:1.9}
.perio-treatment-card{min-width:0;border:1px solid #dbe2d3;background:#f4f8f5;border-radius:6px;overflow:hidden}
.perio-treatment-image{background:#fff}
.perio-treatment-image img{display:block;width:100%;height:210px;object-fit:contain}
.perio-treatment-card>div{padding:20px}
.periodontal-page .perio-treatment-card h3{font-size:23px;line-height:1.4;margin:0 0 5px}
.perio-treatment-card>div>span{font-size:12px;color:#65805c}
.periodontal-page .perio-treatment-card p{font-size:14px;color:var(--muted);margin:12px 0 0;line-height:1.8}
.periodontal-page .treatment-detail .guide-steps{margin:0}
.periodontal-page .treatment-detail .guide-steps li{padding-top:16px;padding-bottom:16px}
.periodontal-page .treatment-detail .guide-steps h3{font-size:20px}
.periodontal-page .treatment-detail .guide-steps p{font-size:14px;line-height:1.9}
.perio-decision{margin-top:26px;padding:22px;background:#f0f7f2;border-left:3px solid #8b9e7b}
.periodontal-page .perio-decision h3{font-size:20px;margin:0 0 18px}
.perio-decision>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.periodontal-page .perio-decision h4{font-size:17px;font-weight:500;line-height:1.5;margin:0 0 10px}
.periodontal-page .perio-decision p{font-size:13px;line-height:1.9;color:var(--muted);margin:0}
.perio-healing-grid{gap:18px;max-width:760px;margin:24px auto 12px}
.perio-healing-grid figure{margin:0;min-width:0;border:1px solid #e1dfd2;border-radius:6px;overflow:hidden;background:#f5f7f5}
.perio-healing-image img{display:block;width:100%;height:auto;max-height:230px;object-fit:contain}
.perio-healing-grid figcaption{padding:15px 18px 20px}
.perio-healing-grid figcaption strong{display:block;font-weight:500;font-size:17px;color:var(--ink)}
.perio-healing-grid figcaption span{display:block;margin-top:7px;font-size:13px;line-height:1.8;color:var(--muted)}
.periodontal-page .perio-expectation-notes h3{font-size:19px;margin:22px 0 8px}
.periodontal-page .perio-expectation-notes h3:first-child{margin-top:0}
.periodontal-page .perio-expectation-notes p{font-size:14px;color:var(--muted);margin:0}
.perio-support-reference{padding-top:24px;margin-top:25px;border-top:1px solid #d7dfce}
.periodontal-page .perio-support-reference h3{font-size:19px;margin:0 0 18px}
.perio-support-reference .example-photo{max-width:340px;margin:auto}
.perio-support-reference .example-photo img{height:auto;max-height:300px;object-fit:contain}
.perio-home-pair{grid-template-columns:minmax(0,1.2fr) minmax(260px,1fr)}
.perio-home-list{list-style:none;padding:0;margin:0}
.perio-home-list li{margin:0 0 20px;padding-left:17px;border-left:2px solid #bdcdb1}
.perio-home-list li:last-child{margin-bottom:0}
.perio-home-list strong{display:block;font-size:16px;font-weight:500;color:var(--ink)}
.perio-home-list span{display:block;font-size:14px;color:var(--muted);line-height:1.9;margin-top:5px}
.perio-home-detail{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.perio-home-detail article>span{font-size:12px;color:#879c79}
.periodontal-page .perio-home-detail h3{font-size:18px;line-height:1.6;margin:8px 0 10px}
.periodontal-page .perio-home-detail p{font-size:14px;color:var(--muted);margin:0}
.periodontal-page .treatment-detail{scroll-margin-top:120px}
@media(max-width:1100px){.perio-condition-pair,.perio-home-pair{grid-template-columns:1fr}.perio-home-pair .perio-figure{max-width:530px;justify-self:center}.perio-home-detail{grid-template-columns:1fr;gap:20px}.perio-home-detail article{border-bottom:1px solid var(--line);padding-bottom:18px}.perio-home-detail article:last-child{border:0;padding-bottom:0}}
@media(max-width:760px){.perio-case-grid,.perio-treatment-grid{grid-template-columns:1fr;gap:24px}.perio-healing-grid{grid-template-columns:1fr;max-width:350px;gap:16px}.perio-healing-image img{max-height:220px}.perio-condition-pair .perio-figure{max-width:400px}.perio-treatment-image img{height:185px}.perio-treatment-card>div{padding:18px}.periodontal-page .perio-treatment-card h3{font-size:21px}.perio-case-image{max-width:280px}.perio-case-image img{height:auto;max-height:340px}.periodontal-page .perio-case h3{font-size:21px}.perio-decision{padding:18px}.perio-decision>div{grid-template-columns:1fr;gap:20px}.perio-home-list span{font-size:14px}.perio-figure{padding:10px}.periodontal-page .perio-condition-brief h3{font-size:20px}.periodontal-page .treatment-detail summary small{line-height:1.7}}
@media print{.perio-case-grid,.perio-treatment-grid,.perio-healing-grid{grid-template-columns:1fr 1fr;max-width:none}.perio-case,.perio-treatment-card,.perio-healing-grid figure{break-inside:avoid}.perio-case-image img{height:260px}.perio-home-detail{grid-template-columns:1fr}.perio-treatment-image img{height:160px}}
/* Image-light periodontal guide: optional clinical detail, readable treatment cards. */
.perio-care-steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.perio-step-number{display:block!important;font-size:28px!important;color:var(--accent,#63766b);margin-bottom:18px;letter-spacing:.08em}
.perio-clinical-image img{display:block;width:100%;height:auto;max-height:none;object-fit:contain}
.perio-clinical-image{max-width:760px;margin:auto}
.perio-home-summary{max-width:850px}
.perio-overview-image img{width:100%;height:auto;max-height:440px;object-fit:contain}
@media(max-width:760px){.perio-care-steps{grid-template-columns:1fr}.perio-clinical-image{max-width:100%}.perio-step-number{margin-bottom:10px}}