/* Enterprise AI Deal Intelligence: landing page styles
   Type: Source Serif 4 (headings) and Source Sans 3 (text), SIL Open Font License 1.1 (see assets/fonts). */
@font-face{font-family:"Source Sans 3";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/source-sans-3-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-weight:400;font-style:italic;font-display:swap;src:url(fonts/source-sans-3-latin-400-italic.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-weight:600;font-style:normal;font-display:swap;src:url(fonts/source-sans-3-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-weight:700;font-style:normal;font-display:swap;src:url(fonts/source-sans-3-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/source-serif-4-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:600;font-style:normal;font-display:swap;src:url(fonts/source-serif-4-latin-600-normal.woff2) format("woff2")}

:root{
  --navy:#11283F; --navy-2:#1B3652; --green:#0B3B2E; --green-2:#2E6B57; --mint:#CFE0D8;
  --ink:#1C2733; --g7:#4A5866; --g5:#6B7785; --rule:#D3DAE1; --rule-2:#E4E9EE;
  --tint:#EEF2F6; --tint-g:#E9EFED; --paper:#FFFFFF;
  --sans:"Source Sans 3","Segoe UI",Arial,sans-serif; --serif:"Source Serif 4",Georgia,serif;
  --wrap:1180px; --gut:clamp(16px,4vw,40px); --head-h:68px;
  --r:4px;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 16px);-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font:400 18px/1.6 var(--sans);font-kerning:normal;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--green)}
:focus-visible{outline:3px solid #2F7DCB;outline-offset:3px;border-radius:2px}
h1,h2,h3{font-family:var(--serif);font-weight:600;color:var(--navy);line-height:1.15;margin:0;text-wrap:balance}
h2{font-size:clamp(30px,3.6vw,44px);letter-spacing:-.01em;max-width:22ch}
h3{font-size:22px}
p{margin:0 0 14px}
abbr{text-decoration:none;border-bottom:1px dotted var(--g5)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--navy);color:#fff;padding:10px 14px}
.skip:focus{left:8px}
.eyebrow{font:700 15px/1.2 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin:0 0 14px}
.section{padding:clamp(64px,9vw,112px) 0}
.section-lead{font-size:20px;color:var(--g7);max-width:62ch;margin:18px 0 40px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.35em;min-height:48px;padding:12px 22px;border-radius:var(--r);font:600 17px/1.2 var(--sans);text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:background-color .15s,color .15s,border-color .15s}
.btn-small{min-height:42px;padding:9px 16px;font-size:16px}
.btn-primary{background:var(--green);color:#fff;border-color:var(--green)}
.btn-primary:hover{background:#0F4D3C;color:#fff}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-ghost-dark{color:var(--navy);border-color:var(--navy)}
.btn-ghost-dark:hover{background:var(--tint);color:var(--navy)}
.btn-buy{background:var(--navy);color:#fff}
.btn-buy:hover{background:var(--navy-2);color:#fff}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:var(--tint);color:var(--navy)}
.btn-outline-light{color:#fff;border-color:rgba(255,255,255,.6);background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--rule-2);backdrop-filter:saturate(1.2) blur(6px)}
.header-row{display:flex;align-items:center;justify-content:space-between;min-height:var(--head-h);gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font:400 17px/1.15 var(--sans)}
.brand b{font-weight:700}
.brand-mark{width:30px;height:30px;flex:none}
.site-nav{display:flex;align-items:center;gap:28px}
.site-nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.site-nav ul a{font:600 16px/1 var(--sans);color:var(--ink);text-decoration:none;padding:10px 2px}
.site-nav ul a:hover{color:var(--green);text-decoration:underline}
.menu-toggle{display:none}
@media (max-width:900px){
  .js .menu-toggle{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:8px 12px;background:none;border:1.5px solid var(--rule);border-radius:var(--r);font:600 16px var(--sans);color:var(--navy);cursor:pointer}
  .menu-icon,.menu-icon::before,.menu-icon::after{display:block;width:18px;height:2px;background:var(--navy);position:relative}
  .menu-icon::before,.menu-icon::after{content:"";position:absolute;left:0}
  .menu-icon::before{top:-6px}.menu-icon::after{top:6px}
  .menu-toggle[aria-expanded="true"] .menu-icon{background:transparent}
  .menu-toggle[aria-expanded="true"] .menu-icon::before{top:0;transform:rotate(45deg)}
  .menu-toggle[aria-expanded="true"] .menu-icon::after{top:0;transform:rotate(-45deg)}
  .js .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--rule);padding:8px var(--gut) 20px;flex-direction:column;align-items:stretch;gap:12px;box-shadow:0 12px 24px rgba(17,40,63,.08)}
  .js .site-nav.open{display:flex}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav ul a{display:block;padding:14px 0;border-bottom:1px solid var(--rule-2);font-size:18px}
  .no-js .header-row{flex-wrap:wrap;padding:10px 0}
  .no-js .site-nav{flex-wrap:wrap}
  .no-js .site-nav ul{flex-direction:row;flex-wrap:wrap;gap:4px 18px}
  .no-js .site-nav ul a{border:0;padding:8px 0}
}
@media (max-width:420px){.brand span{font-size:15px}}

/* hero */
.hero{background:var(--navy);color:#fff;padding:clamp(56px,8vw,104px) 0 clamp(56px,8vw,96px);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(32px,5vw,72px);align-items:center}
.hero .eyebrow{color:var(--mint)}
.hero h1{color:#fff;font-size:clamp(38px,5.2vw,64px);line-height:1.06;letter-spacing:-.015em;max-width:16ch}
.lead{font-size:20px;line-height:1.6;color:#DCE5EE;margin:26px 0 32px;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-note{margin:20px 0 0;font-size:16px;color:#B9C8D6}
.hero-visual{margin:0}
.hero-visual svg{width:100%;height:auto;display:block}
.hv-box{fill:rgba(255,255,255,.04);stroke:#8FA5BA;stroke-width:1.4}
.hv-core{fill:var(--green);stroke:#fff;stroke-width:1.6}
.hv-band{fill:rgba(207,224,216,.08);stroke:#5E7891;stroke-width:1;stroke-dasharray:5 4}
.hv-line{fill:none;stroke:#CFE0D8;stroke-width:1.8}
.hv-k{font:700 12px var(--sans);letter-spacing:.12em;fill:#9FC3B4}
.hv-k-dark{fill:#CFE0D8}
.hv-t{font:400 16px var(--sans);fill:#fff}
.hv-core-t{font:600 19px var(--serif);fill:#fff}
.hv-small{font:400 13.5px var(--sans);fill:#DCE5EE}
.hv-band-t{fill:#B9C8D6}
.hv-o{font:600 16px var(--sans);fill:#fff}
.hv-mobile{display:none!important}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-visual{max-width:560px}}
@media (max-width:600px){.hv-desktop{display:none!important}.hv-mobile{display:block!important;max-width:400px}}

/* argument */
.argument h2{max-width:30ch}
.arg-intro{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);margin:30px 0 48px;max-width:1080px}
.arg-intro p{margin:0}
.questions{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:0 0 28px}
.q{border-top:3px solid var(--navy);padding:22px 0 0}
.q-n{font:600 15px var(--sans);color:var(--green);letter-spacing:.08em}
.q h3{margin:8px 0 10px;font-size:23px}
.q p{color:var(--g7);margin:0}
.governance{display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:baseline;background:var(--tint-g);border-left:4px solid var(--green);padding:22px 26px;margin:0 0 48px}
.governance p{margin:0}
.g-label{font:700 15px/1.3 var(--sans);letter-spacing:.06em;text-transform:uppercase;color:var(--green)}
.evidence{display:grid;grid-template-columns:1fr 1fr;gap:20px 40px;border-top:1px solid var(--rule);padding-top:32px}
.stat{margin:0;display:grid;grid-template-columns:1fr;gap:10px;align-items:start;border-left:3px solid var(--navy);padding-left:20px}
.stat-n{font:600 44px/1 var(--serif);color:var(--navy);margin:0;white-space:nowrap}
.stat-n span{font:400 18px var(--sans);color:var(--g7)}
.stat figcaption{font-size:17px;color:var(--ink)}
.src{display:block;color:var(--g7);font-size:15px;margin-top:6px}
.stat-note{grid-column:1/-1;font-size:16px;color:var(--g7);margin:4px 0 0;max-width:80ch}
@media (max-width:900px){.arg-intro,.questions,.evidence{grid-template-columns:1fr}.governance{grid-template-columns:1fr;gap:8px}}


/* decision map */
.map-section{background:var(--tint)}
.map{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0 12px;position:relative}
.map-rail{grid-column:1/-1;grid-row:1;display:grid;grid-template-columns:3fr 2fr;position:relative;margin:0 0 14px;font:700 13px var(--sans);letter-spacing:.1em;text-transform:uppercase}
.rail-line{position:absolute;left:0;right:0;bottom:-8px;height:2px;background:linear-gradient(90deg,var(--navy) 0 60%,#9AA8B6 60% 100%)}
.rail-split{color:var(--navy);padding:0 0 6px}
.rail-later{color:var(--g5);border-left:2px dashed #9AA8B6;padding-left:12px}
.m-btn{grid-row:2;display:flex;flex-direction:column;align-items:flex-start;gap:6px;text-align:left;background:#fff;border:1.5px solid var(--rule);border-top:4px solid var(--rule);border-radius:var(--r);padding:16px 16px 18px;margin-top:10px;cursor:pointer;font:inherit;color:var(--ink);min-height:132px;transition:border-color .15s,background-color .15s}
.m-btn:hover{border-color:var(--navy)}
.m-n{font:600 30px/1 var(--serif);color:var(--navy)}
.m-name{font:600 18px/1.25 var(--sans);color:var(--navy)}
.m-tag{margin-top:auto;font:700 13px var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--green)}
.m-tag-later{color:var(--g5)}
.m-btn[aria-expanded="true"]{background:var(--navy);border-color:var(--navy);border-top-color:var(--mint)}
.m-btn[aria-expanded="true"] .m-n,.m-btn[aria-expanded="true"] .m-name{color:#fff}
.m-btn[aria-expanded="true"] .m-tag{color:var(--mint)}
.m-panel{grid-column:1/-1;grid-row:3;background:#fff;border:1.5px solid var(--navy);border-radius:var(--r);padding:clamp(22px,3vw,36px);margin-top:16px;position:relative}
.js .m-panel[hidden]{display:none}
.m-title{font-size:28px}
.m-title span{display:block;font:700 14px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin-bottom:6px}
.m-sum{font-size:19px;color:var(--g7);margin:10px 0 22px;max-width:70ch}
.m-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 36px;margin:0}
.m-grid div{border-top:1px solid var(--rule);padding-top:12px}
.m-grid dt{font:700 14px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--navy);margin-bottom:4px}
.m-grid dd{margin:0}
.m-grid .m-sat{background:var(--tint-g);border-top:3px solid var(--green);padding:12px 16px 14px}
.m-grid .m-sat dt{color:var(--green)}
.m-grid .m-trig{background:var(--tint);border-top:3px solid var(--navy);padding:12px 16px 14px}
.m-later{margin:18px 0 0;font-size:16px;color:var(--g7);border-top:1px dashed #9AA8B6;padding-top:12px}
.map-foot{margin-top:30px;display:grid;grid-template-columns:1fr auto;gap:20px 40px;align-items:center}
.map-foot p{margin:0;color:var(--g7);max-width:72ch}
.map-dl{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.map-dl span{font-size:15px}
/* without JavaScript, or on narrow screens: a readable stacked list */
.no-js .map{grid-template-columns:1fr}
.no-js .map-rail{display:none}
.no-js .m-btn,.no-js .m-panel{grid-row:auto;grid-column:1}
.no-js .m-btn{min-height:0;cursor:default;margin-top:28px}
@media (max-width:900px){
  .map{grid-template-columns:1fr}
  .map-rail{display:none}
  .m-btn,.m-panel{grid-row:auto;grid-column:1}
  .m-btn{flex-direction:row;align-items:center;min-height:60px;gap:14px;margin-top:10px;padding:12px 16px;border-top-width:1.5px;border-left:4px solid var(--rule)}
  .m-btn[aria-expanded="true"]{border-left-color:var(--mint)}
  .m-n{font-size:24px;width:26px}
  .m-tag{margin:0 0 0 auto;text-align:right}
  .m-panel{margin-top:0;border-top:0;border-radius:0 0 var(--r) var(--r)}
  .m-grid{grid-template-columns:1fr}
  .map-foot{grid-template-columns:1fr}
}

/* worked example */
.ex-flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px;counter-reset:ex}
.ex-step{counter-increment:ex;border:1.5px solid var(--rule);border-radius:var(--r);padding:22px 24px 20px;position:relative;background:#fff}
.ex-step::before{content:counter(ex);position:absolute;top:-14px;left:20px;width:28px;height:28px;border-radius:50%;background:var(--navy);color:#fff;font:600 15px/28px var(--sans);text-align:center}
.ex-step p:last-child{margin:0}
.ex-wide{grid-column:1/-1}
.ex-k{font:700 14px var(--sans);letter-spacing:.11em;text-transform:uppercase;color:var(--green);margin:4px 0 8px}
.ex-hyp{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.ex-hyp li{border-top:3px solid var(--rule);padding-top:10px}
.ex-hyp li b{display:block;font:600 18px/1.3 var(--serif);color:var(--navy);margin-bottom:6px}
.ex-hyp li span{color:var(--g7)}
.ex-hyp li.best{border-top-color:var(--green);background:var(--tint-g);padding:10px 14px 12px}
.ex-hyp li.best span{color:var(--ink)}
.ex-cond{margin:26px 0 0;font-size:17px;color:var(--g7);max-width:84ch;border-left:3px solid var(--rule);padding-left:16px}
@media (max-width:900px){.ex-flow,.ex-hyp{grid-template-columns:1fr}}

/* perspectives */
.perspectives{background:var(--navy);color:#fff}
.perspectives h2,.perspectives .tp-title{color:#fff}
.perspectives .eyebrow{color:var(--mint)}
.perspectives .section-lead{color:#C9D6E2}
.tablist{display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid #3A5370;margin-bottom:0}
.tablist [role=tab]{font:600 17px/1.25 var(--sans);color:#C9D6E2;background:transparent;border:0;border-bottom:3px solid transparent;padding:14px 16px 13px;min-height:48px;cursor:pointer;text-align:left}
.tablist [role=tab]:hover{color:#fff}
.tablist [role=tab][aria-selected="true"]{color:#fff;border-bottom-color:var(--mint)}
.tabpanel{padding:34px 0 4px}
.js .tabpanel[hidden]{display:none}
.no-js .tablist{display:none}
.no-js .tabpanel+.tabpanel{border-top:1px solid #3A5370;margin-top:28px}
.tp-title{font-size:26px;margin-bottom:12px}
.tp-sit{font-size:20px;color:#DCE5EE;max-width:64ch}
.tp-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px 48px;margin:24px 0}
.tp-k{font:700 14px var(--sans);letter-spacing:.11em;text-transform:uppercase;color:var(--mint);margin-bottom:10px}
.tp-q{margin:0;padding:0;list-style:none;counter-reset:q}
.tp-q li{counter-increment:q;display:grid;grid-template-columns:28px 1fr;padding:10px 0;border-top:1px solid #3A5370}
.tp-q li::before{content:counter(q);font:600 18px var(--serif);color:var(--mint)}
.tp-ex{background:rgba(255,255,255,.06);border-left:3px solid var(--mint);padding:14px 18px;margin:0}
.tp-gives{border-top:1px solid #3A5370;padding-top:16px;color:#fff;max-width:84ch}
.tp-gives b{color:var(--mint)}
.perspectives :focus-visible{outline-color:#8EC5FF}
.perspectives a{color:#fff}
@media (max-width:900px){.tp-cols{grid-template-columns:1fr}.tablist{flex-direction:column;gap:0}.tablist [role=tab]{border-bottom:0;border-left:3px solid transparent}.tablist [role=tab][aria-selected="true"]{border-left-color:var(--mint);background:rgba(255,255,255,.06)}}

/* report */
.rep-head{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:start}
.rep-cover{margin:0;box-shadow:0 18px 40px rgba(17,40,63,.18),0 2px 6px rgba(17,40,63,.12)}
.rep-series{display:block;font:700 14px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin-bottom:8px}
.rep-info h2{max-width:20ch;font-size:clamp(30px,3.4vw,42px)}
.rep-sub{font-size:20px;color:var(--g7);margin:14px 0 18px}
.inside{margin:18px 0 22px;padding:0;list-style:none}
.inside li{position:relative;padding:8px 0 8px 26px;border-top:1px solid var(--rule-2)}
.inside li::before{content:"";position:absolute;left:2px;top:17px;width:10px;height:10px;border:2px solid var(--green);border-radius:2px}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:0 0 24px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:14px 0}
.facts dt{font:700 13px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--g7)}
.facts dd{margin:2px 0 0;font-weight:600;color:var(--navy);font-size:17px}
.rep-actions{display:flex;flex-wrap:wrap;gap:12px}
.rep-small{font-size:16px;color:var(--g7);margin:14px 0 0}
.workflow{margin:72px 0 0;border-top:1px solid var(--rule);padding-top:36px}
.workflow h3{margin-bottom:20px}
.wf{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 28px 1fr 46px 1fr 28px 1fr;align-items:stretch}
.wf-stage{background:var(--tint);border-top:4px solid var(--navy);padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px}
.wf-stage b{font:600 20px var(--serif);color:var(--navy)}
.wf-stage span:last-child{color:var(--g7);font-size:16px;line-height:1.45}
.wf-n{font:700 14px var(--sans);color:var(--green);letter-spacing:.08em}
.wf-gate{position:relative;display:flex;justify-content:center}
.wf-gate::before{content:"";width:2px;background:var(--navy);height:100%}
.wf-gate span{position:absolute;bottom:-28px;white-space:nowrap;font:700 13px var(--sans);letter-spacing:.06em;text-transform:uppercase;color:var(--g7)}
.wf-gate-2::before{width:6px}
.wf-gate-2 span{color:var(--navy)}
.wf-resp{margin:46px 0 0;font-size:18px}
.excerpts{margin-top:64px;border-top:1px solid var(--rule);padding-top:36px}
.ex-note{color:var(--g7);margin:6px 0 22px}
.ex-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;max-width:960px}
.ex-grid figure{margin:0}
.zoom{display:block;position:relative;border:1px solid var(--rule);box-shadow:0 8px 24px rgba(17,40,63,.10);background:#fff}
.zoom:hover{border-color:var(--navy)}
.zoom-hint{position:absolute;right:10px;bottom:10px;background:var(--navy);color:#fff;font:600 14px var(--sans);padding:6px 10px;border-radius:3px}
.ex-grid figcaption{font-size:16px;color:var(--g7);margin-top:10px}
.next-up{margin-top:72px;display:grid;grid-template-columns:1fr auto;gap:20px 48px;align-items:center;background:var(--tint-g);border-top:4px solid var(--green);padding:28px clamp(20px,3vw,36px)}
.next-up h3{font-size:30px;margin-bottom:8px}
.next-up p{margin:0;color:var(--g7)}
.next-act{display:flex;flex-direction:column;align-items:flex-start;gap:8px;max-width:340px}
.next-small{font-size:15px}
@media (max-width:1024px){.facts{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:900px){
  .rep-head{grid-template-columns:1fr}.rep-cover{max-width:320px}
  .wf{grid-template-columns:1fr}
  .wf-gate{justify-content:flex-start;padding:10px 0 10px 18px;min-height:44px;align-items:center}
  .wf-gate::before{position:absolute;left:0;top:0;bottom:0;height:auto;width:2px}
  .wf-gate-2::before{width:6px}
  .wf-gate span{position:static;padding-left:8px}
  .wf-resp{margin-top:20px}
  .ex-grid{grid-template-columns:1fr;max-width:520px}
  .next-up{grid-template-columns:1fr}
}

/* author */
.author{background:var(--tint)}
.author-grid{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:center;max-width:1040px}
.au-photo{width:100%;aspect-ratio:1/1;object-fit:cover;filter:grayscale(1)}
.au-role{font:600 17px var(--sans);color:var(--green);margin:8px 0 18px}
.author h2{max-width:none}
@media (max-width:700px){.author-grid{grid-template-columns:1fr}.au-photo{max-width:240px}}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:32px 64px}
.faq-list details{border-top:1px solid var(--rule)}
.faq-list details:last-child{border-bottom:1px solid var(--rule)}
.faq-list summary{cursor:pointer;list-style:none;padding:18px 40px 18px 0;font:600 19px/1.35 var(--sans);color:var(--navy);position:relative;min-height:48px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"";position:absolute;right:8px;top:24px;width:10px;height:10px;border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);transform:rotate(45deg)}
.faq-list details[open] summary::after{transform:rotate(-135deg);top:28px}
.faq-list details p{margin:0 0 20px;max-width:70ch}
@media (max-width:900px){.faq-wrap{grid-template-columns:1fr}}

/* closing */
.closing{background:var(--green);color:#fff;padding:56px 0}
.closing-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.closing h2{color:#fff;font-size:clamp(28px,3.2vw,40px)}
.closing-act{display:flex;flex-wrap:wrap;gap:12px}

/* sources */
.sources{padding:56px 0}
.sources h2{font-size:26px}
.src-list{margin:16px 0 0;padding-left:22px;font-size:16px;color:var(--g7);max-width:90ch}
.src-list li{margin-bottom:8px;padding-left:4px}
.src-note{font-size:15px;color:var(--g7);margin-top:14px}

/* footer */
.site-footer{background:var(--navy);color:#C9D6E2;font-size:16px;padding:52px 0 28px}
.site-footer a{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.4fr;gap:28px 40px}
.f-brand{font:600 20px var(--serif);color:#fff;margin-bottom:8px}
.f-k{font:700 14px var(--sans);letter-spacing:.11em;text-transform:uppercase;color:var(--mint);margin-bottom:10px}
.site-footer :focus-visible{outline-color:#8EC5FF}
.share{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
.copy-status{margin:0;min-height:1.4em;color:#fff;font-size:15px}
.copy-fallback[hidden]{display:none}
.copy-fallback{display:flex;flex-direction:column;gap:4px;font-size:15px;width:100%}
.copy-fallback input{font:400 15px var(--sans);padding:8px;border:1px solid #5E7891;border-radius:3px;background:#0C1F31;color:#fff;width:100%}
.f-base{border-top:1px solid #2C4560;margin-top:36px;padding-top:18px}
.f-base p{margin:0;font-size:14px;color:#9FB2C4}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}

/* lightbox */
.lightbox{border:0;padding:0;background:transparent;max-width:min(96vw,1100px);max-height:96vh;width:100%}
.lightbox::backdrop{background:rgba(9,22,36,.86)}
.lb-inner{background:#fff;border-radius:var(--r);padding:56px 16px 16px;position:relative;max-height:96vh;overflow:auto}
.lb-close{position:absolute;top:10px;right:10px;min-height:44px;padding:8px 14px;font:600 16px var(--sans);background:var(--navy);color:#fff;border:0;border-radius:3px;cursor:pointer}
.lb-img{width:100%;height:auto;margin:0 auto}
.lb-cap{margin:12px 4px 0;color:var(--g7);font-size:16px}

/* 404 */
.nf{min-height:70vh;display:flex;align-items:center}
.nf h1{font-size:clamp(34px,5vw,54px);margin-bottom:16px}
.nf p{font-size:20px;color:var(--g7);max-width:52ch}

/* worked example toggle */
.example{padding-top:clamp(56px,7vw,88px);padding-bottom:clamp(56px,7vw,88px)}
.example .section-lead{margin-bottom:24px}
.ex-toggle>summary{list-style:none;display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:12px 22px;border:1.5px solid var(--navy);border-radius:var(--r);font:600 17px/1.2 var(--sans);color:var(--navy);cursor:pointer}
.ex-toggle>summary::-webkit-details-marker{display:none}
.ex-toggle>summary::after{content:"";width:8px;height:8px;border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);transform:rotate(45deg) translateY(-3px)}
.ex-toggle[open]>summary::after{transform:rotate(-135deg) translateY(-2px)}
.ex-toggle>summary:hover{background:var(--tint)}
.ex-close{display:none}
.ex-toggle[open] .ex-open{display:none}
.ex-toggle[open] .ex-close{display:inline}
.ex-toggle[open]>summary{margin-bottom:34px}

/* ===== v2: hero product summary ===== */
.hero-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}
.hero-links{margin:22px 0 0;display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 20px}
.text-link{font-weight:600;color:inherit;text-decoration:underline;text-underline-offset:4px}
.text-link::after{content:"";display:inline-block;width:7px;height:7px;border-right:2px solid currentColor;border-top:2px solid currentColor;transform:rotate(45deg);margin-left:8px;vertical-align:2px}
.hero .text-link{color:#fff}
.hero .text-link:hover{color:var(--mint)}
.hero-links .hero-note{margin:0;font-size:16px;color:#B9C8D6}
.product-card{display:grid;grid-template-columns:150px minmax(0,1fr);gap:22px;align-items:start;background:#fff;color:var(--ink);border-radius:var(--r);padding:24px;box-shadow:0 24px 48px rgba(0,0,0,.28);border-top:4px solid var(--mint)}
.pc-cover{width:100%;box-shadow:0 6px 16px rgba(17,40,63,.22)}
.pc-k{font:700 14px/1.2 var(--sans);letter-spacing:.11em;text-transform:uppercase;color:var(--green);margin:0 0 8px}
.pc-title{font-size:24px;line-height:1.2;max-width:none;margin:0 0 10px}
.pc-text{font-size:17px;line-height:1.5;color:var(--g7);margin:0 0 14px}
.pc-facts{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.pc-facts li{font:600 15px/1 var(--sans);color:var(--navy);background:var(--tint);border:1px solid var(--rule);border-radius:3px;padding:7px 9px}
.pc-price{margin:0;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;border-top:1px solid var(--rule-2);padding-top:12px}
.pc-price b{font:600 28px/1 var(--serif);color:var(--navy)}
.pc-price span{font-size:16px;color:var(--g7)}
.pc-more{font-size:16px;color:var(--navy);margin-left:auto}
@media (max-width:1100px){.product-card{grid-template-columns:110px minmax(0,1fr);padding:20px;gap:18px}}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.product-card{max-width:620px}}
@media (max-width:600px){
  .hero{padding:40px 0 44px}
  .hero h1{font-size:36px}
  .lead{font-size:18px;margin:18px 0 22px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .product-card{grid-template-columns:84px minmax(0,1fr);gap:14px;padding:16px}
  .pc-title{font-size:20px}
  .pc-text{font-size:16px}
  .pc-more{margin-left:0}
}

/* ===== v2: visible reasoning sequence ===== */
.reasoning{background:#fff;padding-top:clamp(56px,7vw,96px)}
.reasoning h2{max-width:24ch}
.rs-flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1.25fr 1fr 1fr 1fr;gap:0 34px;counter-reset:none}
.rs-step{position:relative;background:var(--tint);border-top:4px solid var(--navy);padding:16px 16px 18px;display:flex;flex-direction:column;gap:10px}
.rs-step p{margin:0;font-size:16.5px;line-height:1.5}
.rs-step:not(:last-child)::after{content:"";position:absolute;top:44px;right:-28px;width:22px;height:2px;background:var(--navy)}
.rs-step:not(:last-child)::before{content:"";position:absolute;top:39px;right:-29px;width:0;height:0;border-left:9px solid var(--navy);border-top:6px solid transparent;border-bottom:6px solid transparent}
.rs-n{font:700 13.5px/1.3 var(--sans)!important;letter-spacing:.09em;text-transform:uppercase;color:var(--green)}
.rs-h{font:600 19px/1.3 var(--serif)!important;color:var(--navy)}
.rs-tech{margin-top:auto!important;border-top:1px solid var(--rule);padding-top:10px;font-size:15.5px!important;color:var(--g7)}
.rs-tech b{display:block;font:700 13.5px/1.3 var(--sans);letter-spacing:.06em;text-transform:uppercase;color:var(--navy);margin-bottom:3px}
.rs-hyp{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.rs-hyp li{background:#fff;border:1.5px solid var(--rule);border-radius:3px;padding:8px 10px;font:600 16px/1.3 var(--sans);color:var(--navy)}
.rs-tag{display:block;font:700 12.5px/1.2 var(--sans);letter-spacing:.07em;text-transform:uppercase;margin-bottom:3px}
.rs-hyp .weak{color:var(--g7);border-style:dashed;text-decoration:line-through;text-decoration-thickness:1px;text-decoration-color:#8D99A6}
.rs-hyp .weak .rs-tag{color:var(--g7);text-decoration:none;display:block}
.rs-hyp .best{background:var(--green);border-color:var(--green);color:#fff}
.rs-hyp .best .rs-tag{color:var(--mint)}
.rs-hyp .also .rs-tag{color:var(--green)}
.rs-offer{background:var(--tint-g);border-top-color:var(--green)}
.rs-resp{list-style:none;margin:2px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:6px}
.rs-resp li{background:#fff;border:1px solid var(--rule);border-radius:3px;padding:6px 8px;font:600 15px/1.25 var(--sans);color:var(--navy);text-align:center}
.rs-why{margin:26px 0 22px;font-size:18px;color:var(--ink);max-width:80ch;border-left:3px solid var(--green);padding-left:16px}
.reasoning .ex-toggle>summary{margin-top:4px}
@media (max-width:1180px){.rs-flow{grid-template-columns:1fr 1fr;gap:34px 34px}.rs-exp{grid-row:span 2}.rs-step:not(:last-child)::after,.rs-step:not(:last-child)::before{display:none}.rs-dec{grid-column:1/-1}}
@media (max-width:700px){
  .rs-flow{grid-template-columns:1fr;gap:30px}
  .rs-exp{grid-row:auto}
  .rs-step:not(:last-child)::after{display:block;top:auto;bottom:-24px;right:auto;left:28px;width:2px;height:18px}
  .rs-step:not(:last-child)::before{display:block;top:auto;bottom:-29px;right:auto;left:23px;border-left:6px solid transparent;border-right:6px solid transparent;border-top:9px solid var(--navy);border-bottom:0}
  .rs-resp{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){.section{padding:52px 0}.section-lead{font-size:18px;margin:14px 0 26px}}
.hero .product-card .text-link{color:var(--navy)}
.hero .product-card .text-link:hover{color:var(--green)}
.product-card{grid-template-columns:124px minmax(0,1fr)}
.pc-facts li{font-size:15px;padding:6px 8px}
.pc-price .pc-more{flex-basis:100%;margin:4px 0 0}
@media (min-width:1181px){
  .rs-flow{grid-template-columns:.95fr 1.3fr 1.1fr 1.1fr 1.05fr}
  .rs-offer .rs-h{font:600 17px/1.35 var(--sans)!important}
}
.rs-offer .rs-h{font-family:var(--sans)!important;font-size:17px!important;line-height:1.4!important}
@media (max-width:600px){.product-card{grid-template-columns:84px minmax(0,1fr)}}
.nw{white-space:nowrap}
@media (min-width:701px) and (max-width:1180px){.rs-dec{grid-column:auto}.rs-resp{grid-template-columns:1fr 1fr}}