.seis{--bg:var(--color-bg);--panel:#fff;--ink:var(--color-text);--muted:#6e6a66;--line:#dcd8d3;--night:var(--color-dark);--bronze:var(--color-accent);--bronze-soft:#d9b77f;--sea:#e3e1e6;--land:#fbfaf8;--land-pa:#efe5d4;--coast:#a9a1ad;--grid:#d3d0d8;--q:var(--color-accent);--q-small:#8d7b6a;--q-stroke:#6f4b16;--q7:var(--color-dark);--fault:var(--color-dark);--fault-sub:#4f4566;--fault-hi:#9c2f2a;--shake:#b4462c;--relief:#7a5a2e;--relief-o:.10;--bathy:#3a3560;--bathy-o:.08;--chip:#ece9e5;--chip-on:var(--color-dark);--chip-on-ink:#f3f2f2;--hist:var(--color-accent);color:var(--ink);font-size:14px;line-height:1.55}.seis *{box-sizing:border-box}.seis [hidden]{display:none!important}.seis-stats{display:flex;gap:28px;font-feature-settings:tabular-nums lining-nums;font-variant-numeric:tabular-nums lining-nums}.seis-stats>div{border-left:1px solid var(--line);padding-left:14px}.seis-stats 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var(--color-divider)}.seis-eyebrow{margin-left:6px;font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--color-accent-700)}.seis-h1{margin:4px 0 0;font-weight:400;font-size:clamp(22px,2vw,30px);line-height:1.15;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.seis-strip .seis-stats{flex:none;gap:22px}.seis-strip .seis-stats b{font-size:30px}.seis-lbl{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em;white-space:nowrap}.seis-seg{display:inline-flex}.seis .shb,.seis-btn,.seis-card .x,.seis-pill,.seis-seg button,.seis-tabs button,.seis-x,.seis-zoom button{font:500 13px var(--font-body);color:var(--ink);background:#fff;border:1px solid var(--ctl-line);cursor:pointer;min-height:var(--ctl-h);display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:border-color .15s,color .15s,background .15s}.seis-seg button{min-width:40px;padding:0 8px;font-feature-settings:tabular-nums lining-nums;font-variant-numeric:tabular-nums lining-nums}.seis-seg button+button{margin-left:-1px}.seis-seg button:first-child{border-radius:6px 0 0 6px}.seis-seg button:last-child{border-radius:0 6px 6px 0}.seis-pill{border-radius:999px;padding:0 11px;white-space:nowrap}.seis-pill .ck{display:none}.seis-pill[aria-pressed=true] .ck{display:block}.seis-btn.on,.seis-pill[aria-pressed=true],.seis-seg button[aria-pressed=true],.seis-tabs button[aria-selected=true]{background:var(--ctl-on);color:var(--ctl-on-ink);border-color:var(--ctl-on);position:relative;z-index:1}.seis-pill[aria-disabled=true]{opacity:.45;cursor:not-allowed;background:#fff;color:var(--ink);border-color:var(--ctl-line)}.seis-pill[aria-disabled=true] .ck{display:none}@media (hover:hover){.seis .shb:hover,.seis-btn:hover:not(.on),.seis-card .x:hover,.seis-info:hover,.seis-pill:hover:not([aria-pressed=true]):not([aria-disabled=true]),.seis-reset:hover,.seis-seg button:hover:not([aria-pressed=true]),.seis-tabs button:hover:not([aria-selected=true]),.seis-x:hover,.seis-zoom button:hover{border-color:var(--bronze);color:var(--color-accent-700)}}.seis button:focus-visible,.seis input:focus-visible,.seis tr.pick:focus-visible{outline:2px solid var(--bronze);outline-offset:2px}.seis-ctl{flex:none;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.seis-ctl-in{flex-wrap:wrap;gap:10px 12px;max-width:1400px;margin:0 auto;padding:11px 32px;min-height:64px}.seis-ctl-in,.seis-g{display:flex;align-items:center}.seis-g{gap:8px}.seis-div{width:1px;align-self:stretch;min-height:32px;background:var(--line)}.seis-pills{display:flex;gap:5px;flex-wrap:wrap}.seis-ctl.c1 .seis-g-lay .seis-lbl,.seis-ctl.c2 .seis-g-mag .seis-lbl,.seis-ctl.c2 .seis-g-per>.seis-lbl{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.seis-ctl.c1 .seis-ctl-in{gap:10px 10px}.seis-ctl.c1 .seis-pill{padding:0 9px;gap:5px}.seis-ctl.c2 .seis-g{gap:6px}.seis-reset{margin-left:auto;border:0;background:none;color:var(--ink);font:500 13px var(--font-body);cursor:pointer;min-height:var(--ctl-h);padding:0 4px;text-decoration:underline;-webkit-text-decoration-color:var(--ctl-line);text-decoration-color:var(--ctl-line);text-underline-offset:4px}.seis-yv{font-size:13px;font-feature-settings:tabular-nums lining-nums;font-variant-numeric:tabular-nums lining-nums;color:var(--ink)}.seis-per{width:220px;flex:none}.seis-per .seis-hist{display:block;width:220px;height:22px;margin:0 0 -4px}.seis-pop-wrap{position:relative;display:inline-flex}.seis-info{width:26px;height:26px;border-radius:50%;border:1px solid var(--ctl-line);background:#fff;color:var(--ink);font:600 13px var(--font-heading);cursor:pointer;padding:0;position:relative}.seis-info:after{content:"";position:absolute;inset:-7px}.seis-info.hl{border-color:var(--bronze);color:var(--color-accent-700);box-shadow:0 0 0 3px color-mix(in srgb,var(--bronze) 18%,transparent)}.seis-pop{position:absolute;top:calc(100% + 10px);left:-12px;z-index:30;width:320px;max-width:calc(100vw - 40px);background:#fff;border:1px solid var(--line);box-shadow:0 10px 24px -12px rgba(23,19,32,.3);padding:12px 14px;font-size:12.5px;line-height:1.55;color:var(--leg-ink);text-transform:none;letter-spacing:0}.seis-dual{position:relative;height:28px}.seis-dual .track{position:absolute;left:9px;right:9px;top:12px;height:4px;background:var(--line);border-radius:2px}.seis-dual .fill{position:absolute;top:0;bottom:0;left:0;right:0;background:var(--bronze);border-radius:2px}.seis-dual input[type=range]{position:absolute;left:0;top:0;width:100%;height:28px;margin:0;padding:0;background:none;pointer-events:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;accent-color:var(--bronze)}.seis-dual input[type=range]::-webkit-slider-runnable-track{background:none;height:28px;border:0}.seis-dual 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var(--line)}.seis-mapbox,.seis-stage{min-height:0;background:var(--sea)}.seis-mapbox{position:relative;overflow:hidden;min-width:0;scroll-margin-top:var(--wi-hdr);touch-action:pan-y}.seis-map{position:absolute;inset:0;display:block;width:100%;height:100%;cursor:-webkit-grab;cursor:grab;-webkit-user-select:none;-moz-user-select:none;user-select:none}.seis-map.drag{cursor:-webkit-grabbing;cursor:grabbing}.seis-wm{position:absolute;right:10px;bottom:8px;font:600 13px var(--font-heading);letter-spacing:.04em;color:var(--muted);pointer-events:none}.seis-wm i{font-style:normal;color:var(--bronze)}.seis-zoom{position:absolute;right:10px;top:10px;display:flex;flex-direction:column;gap:4px}.seis-zoom button{width:var(--ctl-h);height:var(--ctl-h);padding:0;border-radius:6px}.seis-panel{padding:0;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--panel);border-left:1px solid var(--line)}.seis-tabs{flex:none;display:grid;grid-template-columns:1fr 1fr;grid-gap:6px;gap:6px;padding:10px 12px;border-bottom:1px solid var(--line)}.seis-tabs button{border-radius:6px;padding:0 10px;font-weight:600}.seis-pane{flex:1 1;min-height:0;overflow-y:auto;overscroll-behavior:contain}.seis-hint{margin:0;padding:24px 16px 8px;text-align:center;font-size:13px;font-style:italic;color:var(--leg-muted)}.seis-card:not([hidden])+.seis-evhint{display:none}.seis-evbox{padding:4px 12px 18px}.seis-evh{margin:4px 4px 8px;font:600 17px var(--font-heading);color:var(--ink)}.seis-evlist{list-style:none;margin:0;padding:0;display:grid;grid-gap:4px;gap:4px}.seis-ev{width:100%;min-height:44px;display:grid;grid-template-columns:auto auto minmax(0,1fr);align-items:baseline;grid-gap:4px 10px;gap:4px 10px;text-align:left;padding:8px 10px;border:1px solid var(--ctl-line);border-radius:6px;background:#fff;color:var(--ink);font:13px/1.35 var(--font-body);cursor:pointer;transition:border-color .15s,background .15s}.seis-ev .d{font-feature-settings:tabular-nums 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var(--bronze)}@media (hover:hover){.seis-ev:hover{border-color:var(--bronze)}}.seis-evmore{display:none}.seis-card{position:relative;border-top:2px solid var(--bronze);padding:12px 16px 16px;font-size:13px;scroll-margin-top:var(--wi-hdr)}.seis-card .m{font-family:var(--font-heading);font-size:26px;font-weight:600;color:var(--bronze);line-height:1.1}.seis-card .x{position:absolute;right:8px;top:8px;width:var(--ctl-h);height:var(--ctl-h);padding:0;border-radius:6px}.seis-card .imp{display:block;margin-top:6px;padding-left:8px;border-left:2px solid var(--shake)}.seis-card .seis-ttl{margin-top:2px;font-size:14px;font-weight:600;line-height:1.35}.seis-card .seis-usgs{display:block;margin-top:2px;font-size:11.5px;line-height:1.4;color:var(--leg-muted)}.seis-card 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.15s}.seis-sheet-h{position:-webkit-sticky;position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:18px 0 8px;touch-action:none}.seis-sheet-h .grip{position:absolute;top:7px;left:50%;width:40px;height:4px;margin-left:-20px;border-radius:2px;background:var(--line)}.seis-sheet-h h2{margin:0;font:600 20px var(--font-heading)}.seis-x{width:44px;height:44px;padding:0;border-radius:6px}.seis-sheet .seis-lbl{display:block;margin:14px 0 8px}.seis-sheet .seis-lbl b{font-weight:600;color:var(--ink);letter-spacing:0;margin-left:6px}.seis-seg.big{display:flex}.seis-seg.big button{flex:1 1;min-height:44px;font-size:14px}.seis-sheet .seis-hist{display:block;width:100%;height:auto;margin:4px 0 0}.seis-sheet .seis-dual{height:44px}.seis-sheet .seis-dual .track{top:20px}.seis-sheet .seis-dual input[type=range]{height:44px}.seis-sheet .seis-dual input[type=range]::-webkit-slider-runnable-track{height:44px}.seis-sheet .seis-dual input[type=range]::-webkit-slider-thumb{width:22px;height:22px;margin-top:11px}.seis-sheet .seis-dual input[type=range]::-moz-range-thumb{width:18px;height:18px}.seis-sheet-note{margin:6px 0 0;line-height:1.5}.seis-sheet-f{display:grid;grid-template-columns:auto 1fr;grid-gap:10px;gap:10px;margin-top:16px}.seis-btn{min-height:44px;padding:0 16px;border-radius:6px;font-weight:600}@media (max-width:1199px){.seis-screen{height:auto}.seis-stage{display:block;border-bottom:0}.seis-mapbox{height:calc(100vh - var(--wi-hdr) - var(--seis-top));height:calc(100dvh - var(--wi-hdr) - var(--seis-top));min-height:320px}.seis-panel{border-left:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.seis-pane{overflow:visible}.seis-tabs{max-width:520px}}@media (min-width:900px){.seis-sheet{display:none}}@media (max-width:899px){.seis{--ctl-h:44px}.seis-strip{flex-wrap:wrap;align-items:flex-end;padding:20px 20px 14px}.seis-strip-l{flex-basis:100%}.seis-h1{white-space:normal;font-size:clamp(24px,6.4vw,30px)}.seis-eyebrow{margin-left:0}.seis-ctl{display:none}.seis-ribbon{position:-webkit-sticky;position:sticky;top:var(--wi-hdr);z-index:40;display:flex;gap:8px;overflow-x:auto;padding:10px 20px;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);scrollbar-width:none;-webkit-overflow-scrolling:touch}.seis-ribbon::-webkit-scrollbar{display:none}.seis-card,.seis-evh,.seis-evhint,.seis-mapbox{scroll-margin-top:calc(var(--wi-hdr) + var(--seis-rib,64px))}.seis-ribbon .seis-pill{flex:none}.seis-pill.dd{gap:8px}.seis-mapbox{height:48svh;min-height:300px}.seis-zoom{gap:6px}.seis-tabs{max-width:none}.seis-evlist:not(.all) li:nth-child(n+6){display:none}.seis-evmore{display:flex;align-items:center;justify-content:center;width:100%;min-height:44px;margin-top:8px;border:1px solid var(--ctl-line);border-radius:6px;background:#fff;color:var(--ink);font:600 13px var(--font-body);cursor:pointer}.seis-phonehint{display:block;margin:0;padding:12px 16px 0;font-size:12.5px;font-style:italic;color:var(--leg-muted)}.seis-content{padding:0 20px}}.seis-small{position:absolute;left:0;top:0;pointer-events:none}.seis-flts{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));grid-column-gap:28px;column-gap:28px;margin-top:-11px}.seis-box{background:var(--panel);border:1px solid var(--line);padding:16px;min-width:0}.seis-box h2{font-family:var(--font-heading);font-weight:600;font-size:21px;line-height:1.15;margin:0 0 10px;padding-bottom:6px;border-bottom:1px solid var(--line)}.seis-note{font-size:12px;color:var(--muted)}.seis-note a,.seis-src a{color:var(--color-accent-700)}.seis-flt{display:grid;grid-template-columns:28px 1fr;grid-gap:8px;gap:8px;width:100%;text-align:left;border:0;border-top:1px solid var(--line);background:none;color:var(--ink);padding:8px 0;cursor:pointer;font:inherit}.seis-flt b{font-weight:600}.seis-flt small{display:block;color:var(--muted);font-size:12px;line-height:1.45}.seis-flt[aria-pressed=true] b{color:var(--fault-hi)}.seis table{width:100%;border-collapse:collapse;font-size:13px}.seis td,.seis th{padding:7px 6px;border-top:1px solid var(--line);text-align:left;vertical-align:top}.seis th{font-weight:500;color:var(--muted);border-top:0;font-size:10.5px;text-transform:uppercase;letter-spacing:.12em}.seis td.n{font-feature-settings:tabular-nums lining-nums;font-variant-numeric:tabular-nums lining-nums;white-space:nowrap}.seis td.n b{font-family:var(--font-heading);font-size:18px;color:var(--bronze)}.seis tr.pick{cursor:pointer}.seis tr.pick:hover td{background:var(--chip)}.seis .lab{font:500 10px var(--font-body);fill:var(--muted);letter-spacing:.02em}.seis .glab{paint-order:stroke;stroke:var(--sea);stroke-width:3px;stroke-linejoin:round}.seis .plab{font:600 13px var(--font-heading);fill:var(--muted);opacity:.75;letter-spacing:.16em}.seis .flab{font:italic 500 10.5px var(--font-body);fill:var(--fault);paint-order:stroke;stroke:var(--sea);stroke-width:3px}.seis .shk{font:600 10px var(--font-body);fill:var(--shake);paint-order:stroke;stroke:var(--panel);stroke-width:3px;stroke-linejoin:round}@media (prefers-reduced-motion:no-preference){.seis .qd{transition:opacity .2s}}.seis-src{font-size:12.5px;line-height:1.6;columns:300px 2;column-gap:32px;color:color-mix(in srgb,var(--color-text) 80%,transparent)}.seis-src p{margin:0 0 8px;page-break-inside:avoid;break-inside:avoid}.research-text{max-width:72ch}.research-text h2{font-weight:400;font-size:clamp(26px,2.4vw,34px);line-height:1.15;margin:0 0 18px}.research-text h3{font-weight:400;font-size:22px;line-height:1.2;margin:34px 0 12px}.research-text p{margin:0 0 14px;font-size:15.5px;line-height:1.8}.research-text ol,.research-text ul{margin:0 0 16px;padding-left:22px}.research-text li{margin:0 0 8px;font-size:15.5px;line-height:1.7}.research-text strong{font-weight:600}.research-faq 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