/* ATLAS AFTER BLUE — HOME PAGE
   Palette retained from the original project. Layout and visual system rebuilt. */
:root{
  --navy:#0B1F3A;--navy-2:#102A4B;--navy-3:#18385F;
  --bg:#F4F7FA;--white:#FFFFFF;--text:#1B2733;--label:#5B6B7B;
  --flood:#29B6F6;--perm-water:#7E57C2;--caution:#F59E0B;
  --caution-bg:#FFF4DB;--pass:#009E73;--fail:#E57373;--line:#D5DEE8;
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.65 "IBM Plex Sans",system-ui,sans-serif}
img{max-width:100%}
a{color:inherit}
button,input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--caution);outline-offset:3px}
.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:#fff;padding:10px 14px;border-radius:5px}
.skip-link:focus{top:10px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Navigation */
.site-header{position:sticky;top:0;z-index:100;background:var(--navy);color:#fff;border-bottom:1px solid rgba(213,222,232,.15)}
.header-inner{max-width:var(--max);width:calc(100% - 64px);min-height:76px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff;font-size:17px;font-weight:500;letter-spacing:-.02em}
.brand img{width:48px;height:42px;object-fit:contain;background:none;border-radius:0;padding:0}
.brand b{font-weight:700}
.site-nav{display:flex;align-items:center;gap:30px}
.site-nav a{height:76px;padding:0;display:flex;align-items:center;text-decoration:none;color:#C6D2E0;font-size:14px;border-bottom:3px solid transparent;transition:color .2s,border-color .2s}
.site-nav a:hover,.site-nav a[aria-current=page]{color:#fff;border-bottom-color:#fff}
.menu-toggle{display:none;width:42px;height:40px;background:transparent;border:1px solid #5B6B7B;border-radius:5px;color:#fff}
.menu-lines,.menu-lines:before,.menu-lines:after{display:block;width:17px;height:2px;background:#fff;position:relative;margin:auto}
.menu-lines:before,.menu-lines:after{content:"";position:absolute;left:0}
.menu-lines:before{top:-6px}.menu-lines:after{top:6px}

/* Hero */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:66px 0 0}
.hero:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.14;background-image:linear-gradient(rgba(159,179,200,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(159,179,200,.14) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(90deg,black,transparent 90%)}
.hero-grid{position:relative;z-index:1;max-width:var(--max);width:calc(100% - 64px);margin:auto;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(390px,.98fr);gap:58px;align-items:center}
.hero-copy{padding:18px 0 54px}
.eyebrow,.section-index,.hero-index,.art-topline,.art-bottomline,.viewer-live,.viewer-foot .mono,.timeline-date,.footer-bottom{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em}
.eyebrow{display:flex;align-items:center;gap:10px;color:#B7C9DD;font-weight:600}
.eyebrow-mark{width:7px;height:7px;border-radius:50%;background:var(--flood);box-shadow:0 0 0 5px rgba(41,182,246,.13)}
.hero-index{margin:35px 0 9px;color:#8FA6C1}
.hero h1{font-size:clamp(42px,5.8vw,76px);line-height:1;letter-spacing:-.065em;margin:0;font-weight:600;white-space:nowrap}
.hero h1 span{color:#8DBBE0}
.hero-lead{max-width:650px;color:#D3DEEB;font-size:17px;line-height:1.8;margin:25px 0 0}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:30px}
.button{display:inline-flex;align-items:center;gap:20px;text-decoration:none;padding:12px 17px;border-radius:5px;font-size:14px;font-weight:600;transition:transform .2s,background .2s}
.button:hover{transform:translateY(-2px)}
.button-light{background:#fff;color:var(--navy);border:1px solid #fff}
.button-light:hover{background:#EAF3FA}
.button-dark{background:var(--navy);color:#fff;border:1px solid var(--navy)}
.button-dark:hover{background:var(--navy-3)}
.quiet-link{font-size:14px;color:#D3DEEB;text-underline-offset:5px}
.hero-meta{display:flex;align-items:center;gap:13px;margin-top:34px;color:#9FB3C8;font-size:12px}
.hero-meta span:first-child{display:flex;align-items:center;gap:8px}
.status-dot,.viewer-live i{width:7px;height:7px;display:inline-block;border-radius:50%;background:var(--pass)}
.meta-separator{height:13px;width:1px;background:#526780}
.hero-art{align-self:center;min-width:0}
.art-topline,.art-bottomline{display:flex;justify-content:space-between;gap:10px;color:#9FB3C8;font-size:10px;padding:0 2px 12px}
.hero-image-wrap{position:relative;background:#071321;border:1px solid rgba(159,179,200,.28);padding:10px;overflow:hidden}
.hero-change{width:100%;aspect-ratio:1/1;object-fit:contain;display:block}
.image-crosshair{position:absolute;width:24px;height:24px;opacity:.7}
.image-crosshair:before,.image-crosshair:after{content:"";position:absolute;background:#D3DEEB}
.image-crosshair:before{width:24px;height:1px;top:12px;left:0}.image-crosshair:after{height:24px;width:1px;left:12px;top:0}
.crosshair-one{top:16%;left:15%}.crosshair-two{right:16%;bottom:20%}
.image-label{position:absolute;left:18px;bottom:17px;background:rgba(11,31,58,.92);padding:7px 10px;color:#D3DEEB;font:10px "IBM Plex Mono",monospace;letter-spacing:.08em}
.label-pulse{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--flood);margin-right:7px}
.art-bottomline{padding:12px 2px 0}
.hero-bottom-grid{position:relative;z-index:1;border-top:1px solid rgba(213,222,232,.18);margin-top:14px;display:grid;grid-template-columns:repeat(4,1fr);padding:14px max(32px,calc((100% - var(--max))/2));color:#7188A4;font:10px "IBM Plex Mono",monospace;letter-spacing:.16em}
.hero-bottom-grid span+span{border-left:1px solid rgba(213,222,232,.18);padding-left:20px}

/* Shared sections */
.section-pad{padding:82px 0}
.section-heading{max-width:var(--max);width:calc(100% - 64px);margin:0 auto 30px;display:flex;align-items:end;justify-content:space-between;gap:36px}
.section-index{margin:0 0 12px;color:#71849A;font-weight:600}
.section-heading h2,.interpretation h2{font-size:clamp(32px,4vw,48px);line-height:1.08;letter-spacing:-.055em;margin:0;color:var(--navy)}
.section-intro{max-width:430px;color:var(--label);font-size:14px;line-height:1.75;margin:0}
.readout{background:var(--bg)}
.metrics-grid{max-width:var(--max);width:calc(100% - 64px);margin:auto;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}
.metric-card{background:#fff;border:1px solid var(--line);border-radius:7px;min-height:205px;padding:21px 20px 18px;display:flex;flex-direction:column;position:relative;overflow:hidden;transition:transform .22s,box-shadow .22s,border-color .22s}
.metric-card:hover{transform:translateY(-5px);box-shadow:0 12px 28px rgba(11,31,58,.08);border-color:#AABBCD}
.metric-card:before{content:"";height:3px;position:absolute;left:0;right:0;top:0;background:var(--navy)}
.metric-art{position:absolute;right:17px;top:16px;width:43px;height:32px;display:grid;place-items:center;opacity:.9}
.metric-art-water svg{width:100%;height:100%;fill:none;stroke:var(--flood);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.metric-art-water .water-line-top{stroke:var(--navy);stroke-width:1.5;opacity:.45}
.metric-blue:before{background:var(--flood)}.metric-amber:before{background:var(--caution)}
.metric-label{font-size:13px;font-weight:600;color:var(--text);margin:0}
.metric-value{font:600 clamp(25px,2.6vw,34px)/1.2 "IBM Plex Mono",monospace;letter-spacing:-.06em;margin:12px 0 5px;color:var(--navy);white-space:nowrap}
.metric-value span{font:400 13px "IBM Plex Sans",sans-serif;letter-spacing:0;color:var(--label)}
.metric-value-calendar{display:flex;align-items:center;gap:9px}
.metric-value-calendar svg{width:22px;height:22px;flex:0 0 auto;fill:none;stroke:var(--navy);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.82}
.metric-note{font-size:12px;color:var(--label);line-height:1.5;margin:0 0 16px}
.metric-link{display:flex;justify-content:space-between;gap:8px;margin-top:auto;padding-top:10px;border-top:1px solid #EDF1F5;text-decoration:none;color:var(--navy);font-size:12px;font-weight:600}
.metric-link span{font-size:15px;transition:transform .2s}.metric-link:hover span{transform:translate(2px,-2px)}
.metric-status{margin:9px 0 10px}.pass-badge{display:inline-block;border-radius:99px;background:var(--pass);color:#fff;font-size:14px;font-weight:700;padding:5px 14px}
.data-footnote{max-width:var(--max);width:calc(100% - 64px);margin:14px auto 0;color:#758395;font-size:11px}

/* Image explorer */
.explorer{background:#0A1B31;color:#fff;position:relative;overflow:hidden}
.explorer:before{content:"";position:absolute;inset:0;opacity:.12;background:radial-gradient(ellipse at 15% 20%,#2A6A9C,transparent 48%),linear-gradient(135deg,transparent 50%,rgba(255,255,255,.04))}
.section-heading-light{position:relative;z-index:1}.section-heading-light h2{color:#fff}.section-heading-light .section-index{color:#8FA6C1}.section-heading-light .section-intro{color:#B6C6D8}
.explorer-layout{position:relative;z-index:1;max-width:var(--max);width:calc(100% - 64px);margin:auto;display:grid;grid-template-columns:minmax(0,1fr) 270px;grid-template-rows:auto auto auto;gap:0 34px;align-items:stretch}
.explorer-main{min-width:0;display:contents}
.viewer-toolbar{grid-column:1;grid-row:1;display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:12px;flex-wrap:wrap}
.layer-tabs{display:flex;gap:5px;flex-wrap:wrap}
.layer-tab{border:1px solid #42556D;background:transparent;color:#C5D2E1;border-radius:4px;padding:8px 12px;font-size:12px;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.layer-tab:hover{border-color:#9FB3C8;color:#fff}
.layer-tab.is-active{background:#fff;color:var(--navy);border-color:#fff;font-weight:600}
.viewer-live{color:#91A7C0;font-size:10px;display:flex;align-items:center;gap:8px}
.radar-viewer{position:relative;grid-column:1;grid-row:2;min-height:320px;aspect-ratio:1.45/1;background:#030A13;border:1px solid #34465C;display:grid;place-items:center;overflow:hidden}
.compare-stage{position:absolute;inset:0;display:block}
.compare-stage[hidden],.single-layer[hidden]{display:none}
.radar-image{position:absolute;width:100%;height:100%;object-fit:contain;inset:0}
.radar-after-clip{position:absolute;inset:0;clip-path:inset(0 0 0 50%)}
.compare-divider{position:absolute;left:50%;top:0;bottom:0;width:2px;background:#fff;transform:translateX(-1px);pointer-events:none;display:flex;align-items:center;justify-content:center;gap:4px;color:var(--navy);font-size:10px}
.compare-divider:before{content:"";position:absolute;width:30px;height:30px;border:2px solid #fff;border-radius:50%;background:var(--navy);box-shadow:0 2px 12px #0007}
.compare-divider span{position:relative;color:#fff;z-index:1;font-size:8px}
.compare-captions{position:absolute;top:14px;left:14px;right:14px;display:flex;justify-content:space-between;pointer-events:none}
.compare-captions span,.single-layer-caption{background:rgba(11,31,58,.88);padding:5px 8px;color:#fff;font:10px "IBM Plex Mono",monospace;letter-spacing:.08em}
.single-layer-caption{position:absolute;top:14px;left:14px;pointer-events:none}
.single-layer-caption[hidden]{display:none}
.compare-range{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.single-layer{width:100%;height:100%;max-height:570px;object-fit:contain;position:absolute;inset:0;margin:auto}
.viewer-corner{position:absolute;bottom:12px;right:12px;background:rgba(11,31,58,.9);padding:5px 8px;color:#D3DEEB;font:9px "IBM Plex Mono",monospace;letter-spacing:.1em;pointer-events:none}
.viewer-foot{grid-column:1;grid-row:3;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#91A7C0;font-size:11px;padding:11px 2px 0}
.viewer-foot .mono{font-size:9px}
.explorer-aside{grid-column:2;grid-row:2;border-left:1px solid #34465C;padding:4px 0 4px 25px;display:flex;flex-direction:column}
.aside-number{color:#7891AD;font-size:10px}
.explorer-aside h3{font-size:25px;line-height:1.15;letter-spacing:-.04em;margin:20px 0 12px}
.explorer-aside>p{color:#B7C6D7;font-size:13px;line-height:1.75;margin:0 0 24px}
.scene-date{display:flex;gap:12px;align-items:center;padding:13px 0;border-top:1px solid #34465C}
.date-marker{width:9px;height:9px;border-radius:50%;background:#9FB3C8;flex:0 0 auto}
.date-marker-blue{background:var(--flood)}
.scene-date b,.scene-date small{display:block}.scene-date b{font-size:13px}.scene-date small{font-size:11px;color:#91A7C0;margin-top:2px}
.aside-caution{display:flex;gap:10px;background:#1C2C40;border:1px solid #4B5661;padding:12px;margin-top:15px}
.caution-icon{color:var(--caution);font-weight:700;font-size:18px}
.aside-caution p{margin:0;color:#D1D9E2;font-size:11px;line-height:1.6}
.aside-link{color:#fff;text-decoration:none;font-size:12px;font-weight:600;margin-top:auto;padding-top:20px}
.aside-link span{margin-left:7px}

/* Timeline */
.timeline-section{background:#fff}
.event-timeline{max-width:var(--max);width:calc(100% - 64px);margin:55px auto 0;display:grid;grid-template-columns:repeat(3,1fr);position:relative}
.event-timeline:before{content:"";position:absolute;top:7px;left:0;right:0;height:1px;background:#C8D3DF}
.timeline-stop{position:relative;padding:28px 35px 0 0}
.timeline-node{position:absolute;top:0;left:0;width:15px;height:15px;border:3px solid var(--navy);background:#fff;border-radius:50%;z-index:1}
.timeline-event .timeline-node{background:var(--caution);border-color:var(--caution);box-shadow:0 0 0 5px #FFF4DB}
.timeline-date{color:#74869B;font-weight:600;margin:0 0 12px}
.timeline-stop h3{font-size:18px;margin:0 0 8px;color:var(--navy)}
.timeline-stop p:last-child{font-size:13px;color:var(--label);max-width:280px;margin:0}

/* Interpretation */
.interpretation{background:#EAF0F5}
.interpretation-grid{max-width:var(--max);width:calc(100% - 64px);margin:auto;display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:center}
.interpretation h2{font-size:clamp(36px,4.5vw,55px)}
.interpretation-lead{max-width:440px;color:var(--label);font-size:15px;line-height:1.8;margin:20px 0 25px}
.interpretation-notes{border-top:1px solid #C9D4DF}
.interpretation-row{display:grid;grid-template-columns:42px 1fr;gap:16px;padding:19px 0;border-bottom:1px solid #C9D4DF}
.interpretation-symbol{font:12px "IBM Plex Mono",monospace;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#fff}
.symbol-blue{color:#168CC5}.symbol-amber{color:#B87900}.symbol-navy{color:var(--navy)}
.interpretation-row h3{margin:0 0 4px;font-size:15px;color:var(--navy)}
.interpretation-row p{margin:0;color:var(--label);font-size:13px;line-height:1.65}
.limits-strip{max-width:var(--max);width:calc(100% - 64px);margin:45px auto 0;background:#FFF4DB;border:1px solid #F2D28F;border-left:4px solid var(--caution);padding:15px 18px;display:flex;align-items:center;gap:14px}
.limits-icon{font-size:20px;color:#A76B00;font-weight:700}
.limits-strip p{font-size:12px;line-height:1.6;margin:0;flex:1}
.limits-strip a{white-space:nowrap;font-size:12px;font-weight:600;color:var(--navy);text-decoration:none}

/* Page destinations */
.explore-pages{background:var(--bg)}
.page-links{max-width:var(--max);width:calc(100% - 64px);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #C8D3DF;border-bottom:1px solid #C8D3DF}
.page-link{min-height:150px;padding:20px 18px;display:flex;flex-direction:column;gap:22px;text-decoration:none;border-right:1px solid #C8D3DF;transition:background .2s}
.page-link:first-child{border-left:1px solid #C8D3DF}
.page-link:hover{background:#fff}
.page-link-index{color:#8092A5;font-size:10px}
.page-link span:nth-child(2){display:flex;flex-direction:column;gap:4px}
.page-link b{font-size:17px;color:var(--navy)}
.page-link small{font-size:11px;line-height:1.5;color:var(--label)}
.page-link i{font-style:normal;color:var(--navy);font-size:18px;margin-top:auto;align-self:flex-end}

/* Footer */
.site-footer{background:var(--navy);color:#D3DEEB;padding:35px max(32px,calc((100% - var(--max))/2)) 0}
.footer-main{display:grid;grid-template-columns:220px 1fr;gap:10px 35px;align-items:center;padding-bottom:28px}
.footer-brand{grid-row:span 2;display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:600}
.footer-brand img{height:38px;width:auto}
.footer-main p{font-size:11px;line-height:1.65;margin:0;color:#B5C4D5}
.footer-main .footer-disclaimer{color:#8FA6C1}
.footer-bottom{border-top:1px solid #30435B;padding:14px 0;display:flex;justify-content:space-between;gap:15px;color:#8197B1;font-size:9px}
.footer-bottom a{color:#D3DEEB;text-decoration:none;font-family:"IBM Plex Sans",sans-serif;font-size:11px;letter-spacing:0}

/* Responsive */
@media(max-width:1000px){
 .hero-grid{grid-template-columns:minmax(0,1fr) minmax(320px,.85fr);gap:32px}
 .metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .explorer-layout{grid-template-columns:minmax(0,1fr) 230px;gap:22px}
 .interpretation-grid{gap:38px}
 .page-links{grid-template-columns:repeat(2,1fr)}
 .page-link:nth-child(3){border-left:1px solid #C8D3DF}
 .page-link:nth-child(-n+2){border-bottom:1px solid #C8D3DF}
}
@media(max-width:720px){
 .header-inner{width:calc(100% - 36px);min-height:66px}
 .brand img{height:37px;width:42px}
 .menu-toggle{display:block}
 .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--navy);padding:8px 22px 16px;border-top:1px solid #30435B;flex-direction:column;align-items:stretch;gap:0}
 .site-nav.is-open{display:flex}
 .site-nav a{height:auto;padding:12px 4px;border-bottom:1px solid #30435B}
 .hero{padding-top:45px}
 .hero-grid{width:calc(100% - 40px);grid-template-columns:1fr;gap:32px}
 .hero-copy{padding:0}
 .hero h1{font-size:clamp(32px,8.8vw,54px);letter-spacing:-.065em}
 .hero-lead{font-size:15px}
 .hero-art{max-width:560px;width:100%;margin:0 auto}
 .hero-bottom-grid{padding:13px 20px;grid-template-columns:repeat(4,1fr);font-size:8px}
 .hero-bottom-grid span+span{padding-left:9px}
 .section-pad{padding:58px 0}
 .section-heading{width:calc(100% - 40px);display:block}
 .section-intro{margin-top:15px}
 .metrics-grid,.data-footnote,.explorer-layout,.event-timeline,.interpretation-grid,.limits-strip,.page-links{width:calc(100% - 40px)}
 .explorer-layout{grid-template-columns:1fr;grid-template-rows:auto auto auto auto;gap:0}
 .viewer-toolbar{grid-column:1;grid-row:1}
 .radar-viewer{grid-column:1;grid-row:2}
 .viewer-foot{grid-column:1;grid-row:3}
 .explorer-aside{grid-column:1;grid-row:4}
 .explorer-aside{border-left:0;border-top:1px solid #34465C;padding:22px 0 0}
 .explorer-aside h3{margin:10px 0}
 .aside-link{margin-top:10px}
 .radar-viewer{min-height:260px}
 .event-timeline{margin-top:35px}
 .timeline-stop{padding-right:15px}
 .interpretation-grid{grid-template-columns:1fr;gap:35px}
 .limits-strip{align-items:flex-start;flex-wrap:wrap}
 .limits-strip p{flex-basis:calc(100% - 40px)}
 .limits-strip a{margin-left:34px}
 .site-footer{padding-left:20px;padding-right:20px}
 .footer-main{grid-template-columns:1fr;gap:12px}
 .footer-brand{grid-row:auto}
}
@media(max-width:480px){
 .hero-bottom-grid{letter-spacing:.07em}
 .hero-bottom-grid span+span{padding-left:6px}
 .metrics-grid{grid-template-columns:1fr 1fr;gap:9px}
 .metric-card{padding:17px 13px;min-height:190px}
 .metric-value{font-size:clamp(20px,6vw,27px)}
 .metric-value span{font-size:11px}
 .metric-label{font-size:12px;line-height:1.4}
 .metric-note{font-size:11px}
 .metric-link{font-size:10px}
 .layer-tabs{width:100%}
 .layer-tab{flex:1;padding:8px 5px;font-size:10px}
 .viewer-live{display:none}
 .radar-viewer{min-height:230px;aspect-ratio:1/1}
 .viewer-foot .mono{display:none}
 .event-timeline{grid-template-columns:1fr;gap:20px;margin-top:25px}
 .event-timeline:before{left:7px;right:auto;top:0;bottom:0;width:1px;height:auto}
 .timeline-stop{padding:0 0 0 32px}
 .timeline-node{left:0;top:4px}
 .timeline-stop p:last-child{max-width:none}
 .page-links{grid-template-columns:1fr}
 .page-link{min-height:112px;border-left:1px solid #C8D3DF;border-bottom:1px solid #C8D3DF!important}
 .page-link:last-child{border-bottom:0!important}
 .footer-bottom{font-size:8px}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *,*::before,*::after{transition:none!important;animation:none!important}
}