/* ============================================================
   LUNGFUL, Guide pages, long-form content
   Shares the brand tokens from the landing page but stays
   deliberately light: no canvas, no preloader, no GSAP, no
   custom cursor. Content pages are judged on Core Web Vitals.
   ============================================================ */
:root{
  --bg:#05100C;
  --bg-2:#081813;
  --panel:#0B201A;
  --ink:#ECF6F0;
  --muted:#8AA89C;
  --faint:#5E776C;
  --mint:#7CF5C4;
  --aqua:#4FE3C8;
  --green:#1DB968;
  --ember:#FF6B45;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --ease:cubic-bezier(.22,1,.36,1);
  --measure:44rem;
  font-synthesis-weight:none;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"General Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:clamp(1rem,.96rem + .2vw,1.09rem);
  line-height:1.68;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
h1,h2,h3,h4{font-family:"Clash Display","General Sans",sans-serif;font-weight:600;line-height:1.08;margin:0;letter-spacing:-.02em}
a{color:var(--mint);text-decoration:none;border-bottom:1px solid rgba(124,245,196,.28);transition:border-color .2s,color .2s}
a:hover{color:#9CFAD4;border-bottom-color:currentColor}
img,svg{display:block;max-width:100%}
::selection{background:var(--mint);color:#04140E}

.wrap{width:100%;max-width:var(--measure);margin:0 auto;padding:0 clamp(1.15rem,5vw,2rem)}
.wrap-wide{max-width:64rem}

/* ---------- Header ---------- */
.site-header{border-bottom:1px solid var(--line);background:rgba(5,16,12,.86);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.85rem 0;max-width:64rem;margin:0 auto}
.brand{display:inline-flex;align-items:center;gap:.55rem;border:0}
.brand:hover{border:0}
.brand-name{font-family:"Clash Display","General Sans",sans-serif;font-weight:600;font-size:1.18rem;letter-spacing:-.01em;color:var(--ink)}
.header-nav{display:flex;gap:1.15rem;align-items:center;font-size:.9rem}
.header-nav a{color:var(--muted);border:0}
.header-nav a:hover{color:var(--mint)}
@media (max-width:560px){.header-nav .hide-sm{display:none}}

/* ---------- Article shell ---------- */
.article{padding:clamp(2.5rem,7vw,4.5rem) 0 4rem}
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-weight:500;font-size:.7rem;
  letter-spacing:.26em;text-transform:uppercase;color:var(--mint);margin:0 0 1.1rem}
.eyebrow::before{content:"";width:24px;height:1px;background:linear-gradient(90deg,var(--mint),transparent)}
h1{font-size:clamp(2.1rem,6vw,3.4rem);letter-spacing:-.032em;margin-bottom:1.1rem}
.standfirst{color:var(--muted);font-size:clamp(1.05rem,1.3vw,1.22rem);line-height:1.55;margin:0 0 1.6rem}
.byline{display:flex;flex-wrap:wrap;gap:.5rem .9rem;align-items:center;color:var(--faint);
  font-size:.84rem;padding-bottom:1.8rem;margin-bottom:2.2rem;border-bottom:1px solid var(--line)}
.byline .dot{opacity:.5}

.article h2{font-size:clamp(1.5rem,3.2vw,2.05rem);margin:2.8rem 0 .9rem;letter-spacing:-.025em;scroll-margin-top:5rem}
.article h3{font-size:clamp(1.13rem,2vw,1.32rem);margin:2rem 0 .6rem;scroll-margin-top:5rem}
.article p{margin:0 0 1.15rem}
.article ul,.article ol{margin:0 0 1.3rem;padding-left:1.3rem}
.article li{margin:.42rem 0}
.article li::marker{color:var(--mint)}
.article strong{color:#fff;font-weight:600}
hr{border:0;border-top:1px solid var(--line);margin:2.8rem 0}

/* ---------- TOC ---------- */
.toc{border:1px solid var(--line);border-radius:14px;background:var(--glass,linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01)));
  padding:1.15rem 1.35rem;margin:0 0 2.4rem}
.toc strong{display:block;font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--faint);margin-bottom:.6rem;font-weight:500}
.toc ol{margin:0;padding-left:1.15rem;font-size:.95rem}
.toc li{margin:.28rem 0}
.toc a{color:var(--ink);border:0}
.toc a:hover{color:var(--mint)}

/* ---------- Timeline ---------- */
.timeline{list-style:none;margin:1.8rem 0 2.2rem;padding:0;position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:.6rem;bottom:.6rem;width:1px;
  background:linear-gradient(180deg,var(--mint),var(--green) 45%,rgba(29,185,104,.15))}
.timeline li{position:relative;padding:0 0 1.5rem 2.2rem}
.timeline li::before{content:"";position:absolute;left:0;top:.52rem;width:15px;height:15px;
  border-radius:50%;background:var(--bg);border:2px solid var(--mint);
  box-shadow:0 0 0 4px rgba(124,245,196,.1)}
.timeline .t-when{display:block;font-family:"Clash Display","General Sans",sans-serif;font-weight:600;
  font-size:1.06rem;color:var(--mint);letter-spacing:-.01em;margin-bottom:.15rem}
.timeline .t-what{color:var(--ink)}
.timeline .t-note{display:block;color:var(--faint);font-size:.88rem;margin-top:.25rem}

/* ---------- Callouts ---------- */
.note{border:1px solid var(--line);border-left:2px solid var(--mint);border-radius:0 12px 12px 0;
  background:rgba(124,245,196,.045);padding:1.1rem 1.3rem;margin:1.8rem 0}
.note p:last-child{margin-bottom:0}
.note.warm{border-left-color:var(--ember);background:rgba(255,107,69,.05)}
.note-label{display:block;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--mint);font-weight:500;margin-bottom:.4rem}
.note.warm .note-label{color:var(--ember-soft,#FF8A6A)}

/* ---------- Tables ---------- */
/* Phones must SEE that the payoff column exists (M53): a persistent thin
   scrollbar plus a right-edge fade signal the horizontal scroll that used to
   be invisible - readers never guessed the differentiator column was there. */
.table-scroll{overflow-x:auto;margin:1.8rem 0;border:1px solid var(--line);border-radius:14px;
  position:relative;scrollbar-width:thin;scrollbar-color:rgba(124,245,196,.4) transparent}
.table-scroll::-webkit-scrollbar{height:8px}
.table-scroll::-webkit-scrollbar-thumb{background:rgba(124,245,196,.35);border-radius:4px}
.table-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.04)}
@media (max-width:560px){
  .table-wrap{position:relative}
  .table-wrap::after{content:"";position:absolute;top:1px;right:1px;bottom:1px;width:28px;
    border-radius:0 14px 14px 0;pointer-events:none;
    background:linear-gradient(270deg,var(--bg) 0%,transparent 100%);opacity:.9}
}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.94rem}
th,td{text-align:left;padding:.85rem 1rem;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:rgba(255,255,255,.03);font-family:"Clash Display","General Sans",sans-serif;
  font-weight:600;font-size:.85rem;letter-spacing:.01em;color:var(--ink);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
td strong{color:#fff}

/* ---------- Calculator ---------- */
.calc{border:1px solid var(--line-2);border-radius:18px;background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  padding:clamp(1.3rem,3.5vw,2rem);margin:2rem 0}
.calc-grid{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.field label{display:block;font-size:.82rem;letter-spacing:.02em;color:var(--muted);margin-bottom:.42rem;font-weight:500}
.field input,.field select{width:100%;padding:.72rem .85rem;border-radius:10px;
  border:1px solid var(--line-2);background:rgba(0,0,0,.28);color:var(--ink);
  font-family:inherit;font-size:1rem;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus{outline:0;border-color:var(--mint);box-shadow:0 0 0 3px rgba(124,245,196,.16)}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238AA89C' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right .9rem center;padding-right:2.2rem}
.calc-out{margin-top:1.6rem;padding-top:1.5rem;border-top:1px solid var(--line)}
.calc-headline{font-family:"Clash Display","General Sans",sans-serif;font-weight:600;
  font-size:clamp(2.2rem,7vw,3.6rem);line-height:1;letter-spacing:-.035em;
  background:linear-gradient(120deg,var(--mint),var(--aqua) 55%,var(--green));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.calc-headline-label{display:block;font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--faint);font-weight:500;margin-bottom:.5rem;font-family:"General Sans",sans-serif}
.calc-rows{display:grid;gap:.55rem;margin-top:1.4rem;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
.calc-row{border:1px solid var(--line);border-radius:11px;padding:.75rem .9rem;background:rgba(0,0,0,.2)}
.calc-row .k{display:block;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:.22rem}
.calc-row .v{font-family:"Clash Display","General Sans",sans-serif;font-weight:600;font-size:1.3rem;letter-spacing:-.02em}
.calc-context{margin-top:1.4rem;color:var(--muted);font-size:.96rem}
.calc-context li{margin:.3rem 0}
.calc-privacy{margin-top:1.2rem;font-size:.82rem;color:var(--faint)}

/* ---------- CTA ---------- */
.cta{border:1px solid var(--line-2);border-radius:18px;
  background:radial-gradient(120% 140% at 12% 0%,rgba(29,185,104,.16),transparent 62%),linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  padding:clamp(1.5rem,4vw,2.3rem);margin:3rem 0 0;text-align:center}
.cta h2{margin:0 0 .7rem;font-size:clamp(1.4rem,3vw,1.9rem)}
.cta p{color:var(--muted);margin:0 auto 1.4rem;max-width:30rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:"General Sans",sans-serif;font-weight:600;font-size:.95rem;
  padding:.82rem 1.6rem;border-radius:100px;border:1px solid transparent;cursor:pointer;
  background:var(--mint);color:#04140E;transition:background .25s,transform .25s var(--ease)}
.btn:hover{background:#9CFAD4;border:1px solid transparent}
a.btn{border-bottom:0}

/* ---------- Sources / footnotes ---------- */
.sources{font-size:.9rem;color:var(--muted)}
.sources li{margin:.5rem 0}

/* ---------- Related ---------- */
.related{display:grid;gap:.9rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:1.5rem 0 0}
.related a{display:block;border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.25rem;
  color:var(--ink);transition:border-color .25s,background .25s}
.related a:hover{border-color:var(--line-2);background:rgba(255,255,255,.025)}
.related .r-kicker{display:block;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--mint);margin-bottom:.35rem}
.related .r-title{font-family:"Clash Display","General Sans",sans-serif;font-weight:600;font-size:1.02rem;letter-spacing:-.015em}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:2.5rem 0 3rem;margin-top:4rem;color:var(--faint);font-size:.86rem}
.footer-inner{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;
  max-width:64rem;margin:0 auto;padding-bottom:1.4rem;border-bottom:1px solid var(--line)}
.footer-links{display:flex;flex-wrap:wrap;gap:1.1rem}
.footer-links a{color:var(--muted);border:0;font-size:.88rem}
.footer-links a:hover{color:var(--mint)}
.footer-fine{max-width:64rem;margin:1.4rem auto 0;display:grid;gap:.7rem}
.footer-fine p{margin:0;line-height:1.55}
.footer-crisis a{color:var(--mint);border:0}

/* ---------- Store CTA buttons (post-launch) ---------- */
.cta-btns{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.btn.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2)}
.btn.btn-ghost:hover{background:transparent;border-color:var(--mint);color:var(--mint)}

/* Sticky-header install CTA: the one link that must survive small screens
   (the audit found the only store button 5-12 phone-screens deep). */
.header-cta{background:var(--mint,#7cf5c4);color:#05100c !important;border:0;
  padding:.38rem .8rem;border-radius:999px;font-weight:700;white-space:nowrap}
.header-cta:hover{filter:brightness(1.08);color:#05100c}