/* ATLAS AFTER BLUE — METHOD PAGE
   Load order: style.css → home.css → method.css */

:root{--max:1240px;--hh:76px}
html{scroll-padding-top:142px}
[hidden]{display:none!important}

/* ---------- Shared nav fixes (same as Home / Report) ---------- */
@media(min-width:721px) and (max-width:860px){
  .site-nav{position:static;left:auto;right:auto;top:auto;background:none;padding:0;gap:20px}
  .menu-toggle{display:none}
}
@media(max-width:720px){.site-nav.open{display:flex}:root{--hh:66px}}

.mwrap{max-width:var(--max);width:calc(100% - 64px);margin:0 auto}
.msec{padding:72px 0}
.msec.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.mhead{margin:0 0 28px;display:flex;align-items:end;justify-content:space-between;gap:30px}
.mhead .section-index{font:600 11px "IBM Plex Mono",monospace;letter-spacing:.12em;color:#71849A;margin:0 0 10px}
.mhead h2{font-size:clamp(28px,3.6vw,44px);letter-spacing:-.05em;color:var(--navy);margin:0;line-height:1.08}
.mhead p.sub{max-width:460px;color:var(--label);font-size:15px;margin:0}
.mcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 10px 30px rgba(11,31,58,.05)}
.mcard h3{font-size:20px;letter-spacing:-.03em;color:var(--navy);margin:0 0 8px}
.mcard p{margin:0 0 10px}
.mcard p:last-child{margin-bottom:0}
.note{font-size:13px;color:var(--label)}

/* ---------- Hero ---------- */
.m-hero{position:relative;background:var(--navy);color:#fff;padding:60px 0 70px;overflow:hidden;isolation:isolate}
.m-hero:before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse at 88% 0%,rgba(41,182,246,.30),transparent 52%),radial-gradient(ellipse at 0% 110%,rgba(126,87,194,.22),transparent 50%)}
.m-hero:after{content:"";position:absolute;inset:0;z-index:-1;opacity:.14;pointer-events:none;background-image:linear-gradient(rgba(159,179,200,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(159,179,200,.18) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:linear-gradient(90deg,black,transparent 85%);mask-image:linear-gradient(90deg,black,transparent 85%)}
.m-hero h1{font-size:clamp(34px,4.8vw,60px);line-height:1.04;letter-spacing:-.055em;font-weight:600;margin:18px 0 16px;max-width:820px;text-shadow:0 4px 30px rgba(0,0,0,.35)}
.m-hero .lead{max-width:700px;font-size:18px;line-height:1.75;color:#D3DEEB;margin:0}
.m-hero .rwrap>*{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.m-hero .rwrap>:nth-child(2){animation-delay:.08s}.m-hero .rwrap>:nth-child(3){animation-delay:.16s}
@keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* ---------- Sticky in-page nav ---------- */
.subnav{position:sticky;top:var(--hh);z-index:90;background:rgba(244,247,250,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.subnav .mwrap{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.subnav .mwrap::-webkit-scrollbar{display:none}
.subnav a{white-space:nowrap;text-decoration:none;font-size:13px;font-weight:600;color:var(--label);padding:7px 14px;border-radius:99px;border:1px solid transparent;transition:background .2s,color .2s}
.subnav a:hover{color:var(--navy);background:#fff;border-color:var(--line)}
.subnav a[aria-current=true]{background:var(--navy);color:#fff}

/* ---------- Radar demo ---------- */
.stage{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,1fr);background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 18px 50px rgba(11,31,58,.09)}
.stage-vis{background:#0B1F3A;position:relative}
.stage-vis svg{display:block;width:100%;height:auto}
.stage-side{padding:24px;display:flex;flex-direction:column;gap:14px}
.surf-list{display:grid;gap:8px}
.surf{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:center;text-align:left;width:100%;border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 12px;cursor:pointer;font:600 15px "IBM Plex Sans",sans-serif;color:var(--text);transition:border-color .2s,background .2s}
.surf:hover{border-color:#9FB3C8}
.surf[aria-pressed=true]{border-color:var(--navy);background:#EAF4FB}
.surf i{width:34px;height:34px;border-radius:8px;display:block}
.surf small{display:block;font-weight:400;color:var(--label);font-size:12px}
.surf-text{font-size:15px;line-height:1.65;margin:0}
.meter-row{display:flex;align-items:center;gap:14px}
.swatch{width:62px;height:62px;border-radius:10px;border:1px solid var(--line);flex:0 0 62px;transition:background .4s}
.meter-col{flex:1}
.meter-col .lbl{display:flex;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:6px}
.meter{height:12px;border-radius:99px;background:#E3EAF1;overflow:hidden}
.meter i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,#1F78B4,#F5C451);transition:width .55s cubic-bezier(.3,1.2,.5,1)}
.flow{stroke-dasharray:9 7;animation:flow .9s linear infinite}
@keyframes flow{to{stroke-dashoffset:-16}}
.callout{margin-top:22px;display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center;background:var(--navy);color:#fff;border-radius:14px;padding:22px 26px}
.callout p{margin:0;font-size:17px}
.ba{display:flex;align-items:center;gap:12px}
.ba figure{margin:0;text-align:center;font-size:12px;color:#B7C9DD}
.ba figure i{display:block;width:58px;height:58px;border-radius:8px;margin-bottom:4px;border:1px solid rgba(255,255,255,.3)}
.ba .arrow{font-size:22px;color:var(--flood)}

/* ---------- dB demo ---------- */
.dbdemo{margin-top:22px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:22px}
.bars{display:grid;gap:14px;margin:18px 0}
.bar-row .lab{display:flex;justify-content:space-between;font-size:14px;font-weight:600;margin-bottom:5px}
.bar-track{height:22px;border-radius:6px;background:#E8EEF4;overflow:hidden}
.bar-track i{display:block;height:100%;border-radius:6px;transition:width .35s}
.bar-before{background:#8FA6C1}
.bar-after{background:var(--flood)}
.bar-after.up{background:var(--caution)}
.big-fact{font:600 34px/1.1 "IBM Plex Mono",monospace;color:var(--navy);letter-spacing:-.05em}
.range-row{margin:14px 0 6px}
.range-row label{display:flex;justify-content:space-between;font-weight:600}
input[type=range]{width:100%;accent-color:var(--navy);margin:8px 0}
.chip-btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.chip-btn{border:1px solid var(--line);background:#fff;border-radius:99px;padding:7px 14px;font:600 13px "IBM Plex Sans",sans-serif;color:var(--navy);cursor:pointer;transition:background .2s}
.chip-btn:hover{background:#EEF3F8}
.chip-btn[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}

/* ---------- Stepper ---------- */
.stepper{display:grid;grid-template-columns:290px minmax(0,1fr);gap:24px;align-items:start}
.step-list{display:flex;flex-direction:column;gap:8px}
.step-btn{display:grid;grid-template-columns:40px 1fr;gap:12px;align-items:center;text-align:left;width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;font:600 15px/1.3 "IBM Plex Sans",sans-serif;color:var(--text);transition:background .2s,color .2s,border-color .2s}
.step-btn .n{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#EEF3F8;font:600 15px "IBM Plex Mono",monospace;color:var(--navy);transition:background .2s,color .2s}
.step-btn:hover{border-color:#9FB3C8}
.step-btn[aria-selected=true]{background:var(--navy);border-color:var(--navy);color:#fff}
.step-btn[aria-selected=true] .n{background:var(--flood);color:var(--navy)}
.step-panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 30px;min-height:360px;box-shadow:0 10px 30px rgba(11,31,58,.05);animation:fadein .35s ease}
@keyframes fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.step-panel h3{font-size:26px;letter-spacing:-.04em;color:var(--navy);margin:0 0 12px}
.step-panel .simple{background:#EAF4FB;border-left:4px solid var(--flood);border-radius:0 8px 8px 0;padding:12px 16px;margin:14px 0}
.step-panel .simple b{display:block;font:600 11px "IBM Plex Mono",monospace;letter-spacing:.1em;color:#1479AE;margin-bottom:4px}
.mini{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:16px 0 0}
.pill{border:1px solid var(--line);background:#F4F7FA;border-radius:8px;padding:8px 12px;font-size:14px}
.pill.ok{background:#E2F5EE;border-color:#9AD9C4}
.pill.mono{font-family:"IBM Plex Mono",monospace;font-size:13px}
.pill.blue{background:#E3F4FD;border-color:#9BD6F3}
.pill.amber{background:var(--caution-bg);border-color:#EBCF94}
.mini .sep{color:var(--label);font-size:20px}
.step-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:22px}
.step-nav a{font-size:14px;font-weight:600;color:var(--navy)}
.btn-dark{border:0;background:var(--navy);color:#fff;border-radius:8px;padding:11px 18px;font:600 14px "IBM Plex Sans",sans-serif;cursor:pointer}
.btn-dark:hover{background:var(--navy-3)}
.btn-dark:disabled{opacity:.4;cursor:default}

/* ---------- Gauges ---------- */
.gauges{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gcard{background:#fff;border:1px solid var(--line);border-top:4px solid var(--navy);border-radius:14px;padding:22px 20px;text-align:center;transition:box-shadow .3s,border-color .3s,transform .22s}
.gcard:hover{transform:translateY(-3px)}
.gcard.hit{border-top-color:var(--pass);box-shadow:0 0 0 3px rgba(0,158,115,.14)}
.gcard svg{width:100%;max-width:240px;display:block;margin:0 auto}
.g-bg{fill:none;stroke:#DCE5EE;stroke-width:14}
.g-zone{fill:none;stroke-width:14}
.g-zone.blue{stroke:#29B6F6}.g-zone.amber{stroke:#F59E0B}
.g-tick{stroke:var(--navy);stroke-width:2}
.g-needle-wrap{transition:transform .6s cubic-bezier(.3,1.35,.5,1)}
.g-needle{stroke:var(--navy);stroke-width:3.5;stroke-linecap:round}
.g-hub{fill:var(--navy)}
.g-end{font:10px "IBM Plex Mono",monospace;fill:#7A8B9C}
.g-name{font-weight:600;color:var(--label);margin:10px 0 2px;font-size:15px}
.gcard h3{font:600 28px/1.2 "IBM Plex Mono",monospace;letter-spacing:-.06em;color:var(--navy);margin:0 0 8px}
.g-live{font-size:13px;color:var(--label);background:#F4F7FA;border-radius:99px;display:inline-block;padding:4px 12px;margin:0 0 10px}
.gcard.hit .g-live{background:#E2F5EE;color:#00694D}
.gcard p.desc{font-size:14px;line-height:1.6;margin:0 0 8px;text-align:left}
.gcard details{text-align:left;border-top:1px solid #EDF1F5;padding-top:8px;font-size:14px}
.gcard summary{cursor:pointer;font-weight:600;color:var(--navy)}
.gcard details p{margin:8px 0 0;line-height:1.6}

/* ---------- Rule playground ---------- */
.play{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px}
.slider-block{margin:18px 0}
.slider-block label{display:flex;justify-content:space-between;font-weight:600}
.slider-block .val{font-family:"IBM Plex Mono",monospace;color:var(--navy)}
.check{display:flex;align-items:center;gap:10px;margin:14px 0 4px;font-weight:600;cursor:pointer}
.check input{width:18px;height:18px;accent-color:var(--navy)}
.checks{list-style:none;margin:0;padding:0}
.checks li{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:11px 0;border-top:1px solid #EDF1F5;font-size:15px;line-height:1.5}
.checks li:first-child{border-top:0}
.ck{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;background:#EEF3F8;color:var(--label);transition:background .25s}
.ck.yes{background:var(--pass);color:#fff}
.ck.no{background:#F3D3D3;color:#A33}
.verdict{border-radius:10px;padding:16px 18px;margin-top:14px;transition:background .3s,border-color .3s}
.verdict b{display:block;font-size:19px;margin-bottom:4px;color:var(--navy)}
.verdict p{margin:0;font-size:14px;line-height:1.6}
.verdict.flood{background:#E3F4FD;border:2px solid var(--flood)}
.verdict.unc{background:var(--caution-bg);border:2px solid var(--caution)}
.verdict.none{background:#EEF3F8;border:2px solid #C9D4DF}

/* ---------- Cleanup demo ---------- */
.clean{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;align-items:start}
.pxgrid{display:grid;grid-template-columns:repeat(14,1fr);gap:3px;max-width:600px}
.px{aspect-ratio:1/1;border-radius:3px;background:#EAF0F5;transition:background .3s}
.px.kept{background:var(--flood)}
.px.removed{background:repeating-linear-gradient(45deg,#E4A9A9,#E4A9A9 3px,#F6DADA 3px,#F6DADA 6px)}
.legend2{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:13px;color:var(--label)}
.legend2 i{display:inline-block;width:14px;height:14px;border-radius:3px;margin-right:6px;vertical-align:-2px}
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
.stat{background:#F4F7FA;border-radius:10px;padding:12px 14px}
.stat b{display:block;font:600 26px "IBM Plex Mono",monospace;color:var(--navy);letter-spacing:-.05em}
.stat span{font-size:13px;color:var(--label)}
.result-line{margin-top:14px;background:var(--navy);color:#fff;border-radius:12px;padding:16px 20px}
.result-line p{margin:0;font-weight:600}
.result-line .mono{color:var(--flood)}

/* ---------- Viewpoint demo + pair ---------- */
.pairgrid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:22px;align-items:start}
.vp-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.vp-card svg{display:block;width:100%;height:auto;background:linear-gradient(#0B1F3A,#16345E)}
.vp-body{padding:20px 22px}
.pair-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:13px 0;border-bottom:1px solid var(--line)}
.pair-row:first-of-type{padding-top:0}
.pair-row:last-of-type{border-bottom:0}
.badge{white-space:nowrap;display:inline-block;font-weight:700;font-size:13px;padding:4px 14px;border-radius:99px}
.badge.pass{background:var(--pass);color:#fff}
.badge.fail{background:var(--fail);color:var(--text)}

/* ---------- Record ---------- */
.rec-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.rec-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;border-top:4px solid var(--navy)}
.rec-card h3{font:600 12px "IBM Plex Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--label);margin:0 0 10px}
.rec-card p{margin:0;line-height:1.7}
.rec-card details summary{cursor:pointer;font-weight:600;color:var(--navy)}
.rec-card details p{margin-top:10px}

/* ---------- Glossary ---------- */
.gloss{display:grid;grid-template-columns:280px minmax(0,1fr);gap:22px;align-items:start}
.gloss-list{display:flex;flex-wrap:wrap;gap:8px}
.gloss-panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 28px;min-height:170px}
.gloss-panel h3{font-size:24px;color:var(--navy);margin:0 0 10px;letter-spacing:-.03em}
.gloss-panel p{margin:0;font-size:17px;line-height:1.7}

/* ---------- Short ---------- */
.short{background:var(--navy);color:#fff;border-radius:16px;padding:34px 38px;position:relative;overflow:hidden}
.short:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 100% 0%,rgba(41,182,246,.25),transparent 55%)}
.short>*{position:relative}
.short h2{color:#fff;font-size:30px;letter-spacing:-.04em;margin:0 0 12px}
.short p{margin:0;max-width:880px;font-size:18px;line-height:1.75;color:#D3DEEB}

/* ---------- Scroll reveal ---------- */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:1000px){
  .stage,.dbdemo,.play,.clean,.pairgrid,.gloss{grid-template-columns:1fr}
  .stepper{grid-template-columns:1fr}
  .step-list{flex-direction:row;overflow-x:auto;padding-bottom:4px}
  .step-btn{width:auto;flex:0 0 auto;grid-template-columns:40px auto}
  .gauges{grid-template-columns:1fr}
  .gcard{display:grid;grid-template-columns:240px 1fr;gap:6px 22px;text-align:left;align-items:center}
  .gcard>svg{grid-row:span 5}
  .gloss-list{flex-direction:row}
  .mhead{display:block}.mhead p.sub{margin-top:12px}
}
@media(max-width:720px){
  .mwrap{width:calc(100% - 40px)}
  .msec{padding:52px 0}
  .m-hero{padding:44px 0 52px}
  .m-hero .lead{font-size:16px}
  .rec-grid{grid-template-columns:1fr}
  .callout{grid-template-columns:1fr}
  .step-btn .t{display:none}
  .step-btn{grid-template-columns:40px}
  .step-panel{padding:22px 20px}
  .gcard{display:block;text-align:center}
  .short{padding:26px 22px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}