:root{--method-panel:var(--scs-surface-2)}html[data-theme=dark]{--method-panel:var(--scs-line-2)}
.method-guide{padding:20px 24px;max-width:1280px;margin:auto;color:inherit}
.method-heading{display:flex;align-items:flex-start;gap:20px;justify-content:space-between}.method-heading h2{margin:0 0 6px;font-size:21px}.method-heading p{margin:0;max-width:760px}.method-heading button{flex-shrink:0}
.method-next,.method-paused{margin:16px 0;padding:10px 14px;border:1px solid var(--line);border-radius:8px;background:var(--method-panel)}.method-next button{padding:4px 10px;margin-left:8px;min-height:30px}
.method-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:24px}.method-layout nav{display:flex;flex-direction:column;gap:7px}.method-layout nav button{display:flex;align-items:center;gap:12px;text-align:left;min-height:66px;padding:10px 12px;white-space:normal}.method-layout nav button[aria-current=step]{border-color:var(--teal);box-shadow:inset 3px 0 var(--teal)}.method-number{font-weight:700;opacity:.8;font-size:18px}.method-layout nav strong,.method-layout nav small{display:block}.method-layout nav small{font-weight:400;margin-top:5px}
.method-detail{padding:18px 22px;border:1px solid var(--line);border-radius:10px;background:var(--method-panel);min-width:0}.method-detail h3{font-size:20px;margin:0 0 10px}.method-detail h4{margin:16px 0 6px;font-size:14px}.method-detail p{margin:8px 0;line-height:1.5}.method-question{font-weight:600}.method-actions{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.method-scope{display:grid;gap:10px;margin:18px 0}.method-scope div{padding-left:12px;border-left:2px solid var(--line)}.method-scope dt{font-weight:600;font-size:13px}.method-scope dd{margin:4px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}
.method-evidence{border-top:1px solid var(--line);padding-bottom:14px}.method-evidence small{display:block;line-height:1.5}.method-evidence #guide-evidence{display:flex;gap:8px 16px;flex-wrap:wrap;margin:10px 0}.method-evidence #guide-evidence span{font-size:13px}.method-evidence strong{font-size:16px;margin-right:3px}.method-diagrams{margin:6px 0 16px}.method-diagrams button{margin:8px 8px 0 0;white-space:normal;text-align:left;max-width:100%}.method-decision{border-top:1px solid var(--line);padding-top:12px}.method-decision>div{display:flex;align-items:center;justify-content:space-between;gap:10px}.method-decision p{white-space:pre-wrap;overflow-wrap:anywhere}.method-guide footer{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:16px}.method-guide footer small{flex-basis:100%}.method-guide footer a{color:var(--teal)}
@media(max-width:1000px){.method-guide{padding:16px}.method-layout{grid-template-columns:1fr}.method-layout nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.method-layout nav button{padding:8px;font-size:13px}.method-layout nav small{font-size:11px}.method-heading{flex-wrap:wrap}.method-detail{padding:16px}}
@media(max-width:600px){.method-layout nav{grid-template-columns:repeat(2,minmax(0,1fr))}.method-decision>div{align-items:flex-start;flex-direction:column}}
/* Areas carry the colour of what they produce (requirement, use case, function, system, interface); status uses the state colours. */
.method-areas [data-area=scope]{--area:var(--scs-kind-requirement)}.method-areas [data-area=usage]{--area:var(--scs-kind-usecase)}.method-areas [data-area=functions]{--area:var(--scs-kind-function)}.method-areas [data-area=architecture]{--area:var(--scs-kind-system)}.method-areas [data-area=interfaces]{--area:var(--scs-kind-interface)}.method-areas [data-area=review]{--area:var(--scs-kind-element)}
.method-areas [data-area]{--area-fill:color-mix(in srgb,var(--area) 86%,black);--area-on:white;--area-soft:color-mix(in srgb,var(--area) 8%,var(--scs-surface))}html[data-theme=dark] .method-areas [data-area]{--area-fill:var(--area);--area-on:var(--scs-bg);--area-soft:color-mix(in srgb,var(--area) 14%,var(--scs-surface))}
.method-areas .method-number{display:inline-grid;place-items:center;flex:0 0 28px;width:28px;height:28px;border-radius:50%;background:var(--area-fill);color:var(--area-on);font-size:14px;font-weight:700;opacity:1}
.method-layout nav button[data-area],.overview-steps button[data-area]{box-shadow:inset 3px 0 var(--area)}.overview-steps button[data-area]:hover{border-color:var(--area)}.overview-steps strong,.overview-steps small{display:block}.overview-steps strong{font-size:13px}.overview-steps small{margin-top:3px;font-size:12px;font-weight:400}.overview-method .method-progress{display:flex;margin:12px 0 8px}.overview-method .method-progress i{flex:1;width:auto;height:8px;border-radius:4px}.overview-method .method-progress small{display:none}.method-layout nav button[aria-current=step]{border-color:var(--area);box-shadow:inset 4px 0 var(--area);background:var(--area-soft)}.method-layout nav button:hover{border-color:var(--area)}
.method-layout nav small::before,.overview-steps small::before,.method-decision strong::before{display:inline-block;width:1.1em;content:'○';color:var(--scs-ink-3)}.method-layout nav [data-status=reviewed] small,.overview-steps [data-status=reviewed] small,.method-decision strong[data-status=reviewed]{color:var(--scs-ok)}.method-layout nav [data-status=reviewed] small::before,.overview-steps [data-status=reviewed] small::before,.method-decision strong[data-status=reviewed]::before{content:'✓';color:inherit}.method-layout nav [data-status=skipped] small,.overview-steps [data-status=skipped] small,.method-decision strong[data-status=skipped]{color:var(--scs-warn)}.method-layout nav [data-status=skipped] small::before,.overview-steps [data-status=skipped] small::before,.method-decision strong[data-status=skipped]::before{content:'–';color:inherit}
.method-detail{border-top:3px solid var(--area)}.method-detail-head{display:flex;align-items:center;gap:12px;margin:0 0 10px}.method-detail-head h3{margin:0}.method-detail-head .method-number{flex-basis:32px;width:32px;height:32px;font-size:15px}.method-scope div{border-left-color:var(--area)}.method-evidence #guide-evidence .method-found strong{color:var(--area-fill)}.method-evidence #guide-evidence span:not(.method-found){color:var(--scs-ink-3)}
#guide-mode{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px}.method-progress{display:inline-flex;align-items:center;gap:4px;margin-left:auto}.method-progress i{width:24px;height:6px;border-radius:3px;background:var(--scs-line)}.method-progress i[data-status=reviewed]{background:var(--area)}.method-progress i[data-status=skipped]{background:color-mix(in srgb,var(--area) 35%,var(--scs-line))}.method-progress small{margin-left:8px;color:var(--scs-ink-3);font-size:12px;white-space:nowrap}
@media(max-width:1000px){.method-layout nav button{gap:6px}.method-layout nav .method-number{flex-basis:20px;width:20px;height:20px;font-size:12px}.method-layout nav strong{hyphens:auto;overflow-wrap:anywhere}}