.scope-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.scope-cards article{padding:28px;border:1px solid var(--line);border-radius:12px;background:#fff}.scope-cards h3{font-size:23px;margin:16px 0 10px}.scope-cards b{font-size:13px;font-weight:500}.scope-cards p{font-size:13px;color:var(--muted);margin-top:12px}.scope-cards a{display:inline-block;color:var(--blue);font-size:12px;padding:14px 0 0}.case-principle{margin-top:36px;padding:24px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}.case-principle strong{color:var(--ink);font-weight:500}.rule-pipeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;list-style:none;padding:0;margin:0 0 48px}.rule-pipeline li{border-top:2px solid #9db6f2;padding-top:20px}.rule-pipeline small{color:var(--blue)}.rule-pipeline h3{font-size:20px;margin:12px 0 8px}.rule-pipeline p{font-size:13px;color:var(--muted)}.case-two-column{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:42px;align-items:start}.case-two-column h3{font-size:25px;line-height:1.5;margin:14px 0 18px}.case-two-column p{font-size:14px;color:var(--muted);margin-top:14px}.rule-example{padding:28px 32px;border:1px solid #dbe5f8;border-radius:12px;background:white}.rule-example strong{display:block;color:var(--blue);font-size:25px}.rule-example .example-arrow{margin:0 0 18px;color:var(--blue)}.rule-example .case-disclaimer{font-size:11px;border-top:1px solid var(--line);padding-top:16px}.case-detail{margin-top:30px;border-block:1px solid var(--line)}.case-detail summary{padding:20px 0;cursor:pointer;color:var(--blue)}.case-detail>div{padding-bottom:22px;color:var(--muted);font-size:13px;max-width:760px}.review-branches{background:#f6f8fc;border-radius:12px;padding:30px;margin-top:30px}.review-branches h3{font-size:22px}.review-branches>p{font-size:13px;color:var(--muted);margin:8px 0 20px}.review-branches details{border-top:1px solid var(--line)}.review-branches summary{cursor:pointer;padding:18px 0;font-size:15px;color:var(--blue)}.review-branches details p{padding:0 0 20px;font-size:13px;color:var(--muted);max-width:760px}.hero h1{font-size:clamp(36px,4vw,56px)}.chapter-nav>.wrap{gap:25px}
@media(max-width:850px){.scope-cards{gap:12px}.scope-cards article{padding:20px}.scope-cards h3{font-size:20px}.case-two-column{gap:28px}.rule-pipeline{gap:16px}.chapter-nav .nav-note{display:none}}
@media(max-width:640px){.scope-cards,.case-two-column{grid-template-columns:1fr}.rule-pipeline{grid-template-columns:1fr 1fr;gap:24px}.case-two-column{gap:24px}.rule-example,.review-branches{padding:22px}.scope-cards article{padding:24px}.section-heading{margin-bottom:32px}.case-two-column h3{font-size:22px}}
.case-detail>div>p{margin:0 0 18px}.case-detail>div>p>b{display:inline-block;color:var(--ink);font-weight:550;margin-bottom:5px}
.real-page-evidence{display:grid;gap:28px;margin:32px 0}.real-page-evidence .wide-evidence{margin:0;padding:12px;background:#fff}.real-page-evidence figcaption{line-height:1.9;font-size:12px;padding:16px 8px 8px}.real-page-evidence img{width:100%;height:auto}
.evidence-gallery{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;margin:40px 0}.evidence-steps{display:flex;flex-direction:column;gap:8px}.evidence-steps button{text-align:left;border:1px solid transparent;border-radius:8px;background:#f5f7fb;padding:17px;color:var(--muted)}.evidence-steps button span{display:block;font-size:11px;margin-bottom:6px}.evidence-steps button b{font-size:14px;font-weight:500}.evidence-steps button[aria-selected="true"]{color:var(--blue);border-color:#adc1ee;background:#edf3ff}.evidence-gallery figure{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}.evidence-gallery img{width:100%;height:auto}.evidence-gallery figcaption{padding:22px}.evidence-gallery figcaption p{font-size:13px;color:var(--muted);margin:8px 0}.evidence-gallery figcaption small{font-size:10px;color:var(--muted)}
@media(max-width:700px){.evidence-gallery{grid-template-columns:1fr;gap:16px}.evidence-steps{flex-direction:row;overflow-x:auto;padding-bottom:5px}.evidence-steps button{min-width:160px}.evidence-gallery figcaption{padding:16px}}
.app-task-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin:0 0 64px}.app-task-strip figure{min-width:0}.app-task-strip img{width:100%;max-width:280px;margin:auto;border:1px solid #d4ddec;border-radius:12px}.app-task-strip figcaption{padding:20px 6px}.app-task-strip b{font-size:14px}.app-task-strip p{color:var(--muted);font-size:12px;margin:8px 0}.app-task-strip small{font-size:10px;color:var(--muted)}
@media(max-width:600px){.app-task-strip{grid-template-columns:repeat(3,240px);overflow-x:auto;gap:20px;scroll-snap-type:x proximity}.app-task-strip figure{scroll-snap-align:start}}