/* ============================================================================
   BLUEPRINT STUDIO — SENTINEL
   Direction B "Marble & Brass": bone/black banded canvases, Cormorant display,
   Inter UI, DM Mono numbers, gold rationed. No drop shadows — depth comes from
   band contrast and 1px hairlines. Radii stay tight (4–8px).
   ========================================================================== */

:root{
  --black:#070707;
  --ink:#0d0d0d;
  --ink-dim:rgba(13,13,13,.62);
  --ink-faint:rgba(13,13,13,.16);
  --bone:#EAE5DB;
  --bone-dim:rgba(234,229,219,.60);
  --bone-faint:rgba(234,229,219,.16);
  --gold:#D4AF37;
  --gold-dim:rgba(212,175,55,.35);
  --serif:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',Arial,sans-serif;
  --mono:'DM Mono',ui-monospace,'Cascadia Code',Consolas,monospace;
  --shout:'Anton',Impact,'Arial Narrow',sans-serif;
  --r:6px;
  --pad:clamp(20px,5vw,64px);
  --band:clamp(72px,10vw,128px);   /* vertical band rhythm */
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--black);color:var(--bone);
  font-family:var(--sans);font-size:16px;line-height:1.55;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit}
button{font:inherit;cursor:pointer}
::selection{background:var(--gold);color:var(--black)}

/* ---------- type ---------- */
h1,h2,h3{margin:0;font-family:var(--serif);font-weight:500;line-height:1.04;letter-spacing:-.01em;text-wrap:balance}
.display{font-size:clamp(44px,7vw,92px)}
.display i,.display em{font-style:italic;font-weight:500}
h2{font-size:clamp(34px,4.6vw,60px)}
h3{font-size:clamp(22px,2.4vw,30px)}
p{margin:0}
.lede{font-size:clamp(17px,1.6vw,20px);line-height:1.6;max-width:56ch}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  display:flex;align-items:center;gap:12px;margin:0 0 22px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.7}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.shout{
  font-family:var(--shout);font-weight:400;text-transform:uppercase;
  letter-spacing:.005em;line-height:.98;font-size:clamp(40px,7.4vw,104px);
}

/* ---------- bands ---------- */
.band{padding:var(--band) 0}
.band--bone{background:var(--bone);color:var(--ink)}
.band--bone .eyebrow{color:var(--ink-dim)}
.band--black{background:var(--black);color:var(--bone)}
.band--black .eyebrow{color:var(--bone-dim)}
.wrap{max-width:1200px;margin:0 auto;padding-inline:var(--pad)}
.hairline{border:0;border-top:1px solid var(--ink-faint);margin:0}
.band--black .hairline{border-top-color:var(--bone-faint)}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;background:rgba(7,7,7,.86);
  backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--bone-faint);color:var(--bone);
}
.nav .wrap{display:flex;align-items:center;gap:28px;height:64px;max-width:1400px}
.brand{font-family:var(--sans);font-weight:600;font-size:14px;letter-spacing:.14em;text-transform:uppercase;text-decoration:none;white-space:nowrap}
.brand sup{font-size:8px}
.nav-links{display:flex;gap:26px;margin-inline:auto}
.nav-links a{font-size:13.5px;font-weight:500;text-decoration:none;color:var(--bone-dim);transition:color .2s}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--bone)}
.nav-call{
  display:flex;align-items:center;gap:9px;text-decoration:none;
  font-family:var(--mono);font-size:13.5px;white-space:nowrap;
}
.nav-call .dot{width:7px;height:7px;border-radius:50%;background:var(--gold);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}
@media (max-width:820px){.nav-links{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 30px;border-radius:var(--r);border:1px solid transparent;
  font-weight:600;font-size:15.5px;text-decoration:none;letter-spacing:.01em;
  transition:transform .15s,opacity .2s;
}
.btn:active{transform:scale(.97)}
.band--bone .btn--solid{background:var(--ink);color:var(--bone)}
.band--black .btn--solid{background:var(--bone);color:var(--ink)}
.btn--ghost{background:transparent}
.band--bone .btn--ghost{border-color:var(--ink-faint);color:var(--ink)}
.band--black .btn--ghost{border-color:var(--bone-faint);color:var(--bone)}
.btn:hover{opacity:.88}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.linknum{font-family:var(--mono);font-size:15px;text-decoration:none;border-bottom:1px solid var(--ink-faint);padding-bottom:2px}
.band--black .linknum{border-bottom-color:var(--bone-faint)}

/* ---------- hero ---------- */
.hero{padding-top:clamp(56px,7vw,104px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,64px);align-items:center}
.hero-photo{border-radius:var(--r);overflow:hidden;border:1px solid var(--ink-faint)}
.hero-photo img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/4.6}
.hero .rule{width:64px;height:2px;background:var(--gold);margin:26px 0 22px}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-photo img{aspect-ratio:3/2}}

/* ---------- photo bands ---------- */
.photo-band{position:relative;isolation:isolate;overflow:hidden}
.photo-band>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.photo-band::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(7,7,7,.82),rgba(7,7,7,.55) 45%,rgba(7,7,7,.88))}

/* ---------- the audit / calculator ---------- */
.audit{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,4vw,72px);align-items:center}
@media (max-width:900px){.audit{grid-template-columns:1fr}}
.audit-controls{display:flex;flex-direction:column;gap:34px}
.ctl label{display:flex;justify-content:space-between;align-items:baseline;font-weight:600;font-size:15px;margin-bottom:14px}
.ctl output{font-family:var(--mono);font-size:22px;font-variant-numeric:tabular-nums}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:2px;background:var(--ink-faint);
  border-radius:2px;outline-offset:6px;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;
  background:var(--ink);border:2px solid var(--bone);box-shadow:0 0 0 1px var(--ink);cursor:grab;
}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--ink);border:2px solid var(--bone);cursor:grab}
.ctl small{display:block;margin-top:10px;color:var(--ink-dim);font-size:13px}
.audit-result{border:1px solid var(--ink-faint);border-radius:var(--r);padding:clamp(26px,3vw,44px);background:rgba(255,255,255,.34)}
.leak-line{font-family:var(--serif);font-size:clamp(20px,2vw,25px);line-height:1.35}
.leak-big{font-family:var(--serif);font-weight:600;font-size:clamp(56px,7vw,104px);line-height:1;margin:14px 0 6px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.leak-per{font-family:var(--mono);font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-dim)}
.payoff{margin-top:26px;padding-top:24px;border-top:1px solid var(--ink-faint);font-size:clamp(17px,1.7vw,21px);line-height:1.5}
.payoff b{border-bottom:2px solid var(--gold);font-weight:600}
.audit-note{margin-top:18px;font-size:13px;color:var(--ink-dim)}

/* ---------- big number ---------- */
.callout-num{
  font-family:var(--serif);font-weight:500;text-decoration:none;display:inline-block;
  font-size:clamp(44px,8.4vw,120px);line-height:1;letter-spacing:.01em;font-variant-numeric:tabular-nums;
}
.callout-num:hover{color:var(--gold)}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--ink-faint);border:1px solid var(--ink-faint);border-radius:var(--r);overflow:hidden}
.card{background:var(--bone);padding:clamp(24px,2.6vw,40px)}
.card h3{margin-bottom:12px}
.card p{color:var(--ink-dim);font-size:15px;line-height:1.6}
@media (max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.cards{grid-template-columns:1fr}}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,48px)}
.step .k{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--ink-dim);display:block;margin-bottom:12px}
.step h3{margin-bottom:10px}
.step p{color:var(--ink-dim);font-size:15px}
@media (max-width:800px){.steps{grid-template-columns:1fr}}

/* ---------- pricing ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.tier{border:1px solid var(--ink-faint);border-radius:var(--r);padding:clamp(24px,2.4vw,38px);display:flex;flex-direction:column;gap:16px;background:rgba(255,255,255,.30);position:relative}
.tier--feat{border-color:var(--gold);border-width:1.5px}
.tier--feat .flag{
  position:absolute;top:-11px;left:26px;background:var(--gold);color:var(--black);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  padding:4px 12px;border-radius:999px;font-weight:500;
}
.tier .t-name{font-family:var(--mono);font-size:12.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim)}
.tier .t-price{font-family:var(--serif);font-weight:600;font-size:clamp(40px,3.6vw,54px);line-height:1;font-variant-numeric:tabular-nums}
.tier .t-price small{font-family:var(--sans);font-size:14px;font-weight:400;color:var(--ink-dim)}
.tier .t-vol{font-size:15px;font-weight:600}
.tier .t-vol small{display:block;font-weight:400;color:var(--ink-dim);font-size:12.5px;font-family:var(--mono);margin-top:3px}
.tier ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;flex:1}
.tier li{font-size:14.5px;color:var(--ink-dim);padding-left:20px;position:relative}
.tier li::before{content:"—";position:absolute;left:0;color:var(--ink)}
.tier .t-setup{font-family:var(--mono);font-size:12.5px;color:var(--ink-dim);border-top:1px solid var(--ink-faint);padding-top:14px}
@media (max-width:900px){.tiers{grid-template-columns:1fr}}
.guarantee{margin-top:34px;text-align:center;font-family:var(--serif);font-style:italic;font-size:clamp(18px,1.9vw,23px)}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--bone-faint);border:1px solid var(--bone-faint);border-radius:var(--r);overflow:hidden}
.compare>div{background:var(--black);padding:clamp(24px,2.6vw,40px)}
.compare .c-what{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--bone-dim);margin-bottom:16px}
.compare .c-cost{font-family:var(--serif);font-weight:600;font-size:clamp(34px,3.4vw,50px);line-height:1;font-variant-numeric:tabular-nums}
.compare .c-cost small{font-family:var(--sans);font-size:13px;font-weight:400;color:var(--bone-dim)}
.compare p{margin-top:12px;color:var(--bone-dim);font-size:14px;line-height:1.55}
.compare .is-us{outline:1.5px solid var(--gold);outline-offset:-1.5px}
.compare .is-us .c-cost{color:var(--gold)}
.fine{font-size:12px;color:var(--bone-dim);margin-top:16px;line-height:1.6}
.band--bone .fine{color:var(--ink-dim)}
@media (max-width:800px){.compare{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq{max-width:820px}
.faq details{border-top:1px solid var(--ink-faint);padding:22px 0}
.faq details:last-child{border-bottom:1px solid var(--ink-faint)}
.faq summary{cursor:pointer;font-family:var(--serif);font-size:clamp(19px,1.9vw,24px);font-weight:500;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:baseline}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:20px;color:var(--ink-dim);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin-top:14px;color:var(--ink-dim);max-width:62ch;line-height:1.65}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--bone-faint);padding:44px 0 110px}
.footer .wrap{display:flex;flex-wrap:wrap;gap:18px 40px;justify-content:space-between;align-items:baseline}
.footer,.footer a{color:var(--bone-dim);font-size:13px;text-decoration:none}
.footer a:hover{color:var(--bone)}
.footer .fbrand{font-family:var(--mono);letter-spacing:.16em;text-transform:uppercase;font-size:11.5px}

/* ---------- sticky mobile call bar ---------- */
.callbar{display:none}
@media (max-width:820px){
  .callbar{
    display:flex;position:fixed;inset-inline:0;bottom:0;z-index:60;
    background:rgba(7,7,7,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-top:1px solid var(--bone-faint);padding:12px var(--pad) calc(12px + env(safe-area-inset-bottom));
    align-items:center;justify-content:center;gap:10px;text-decoration:none;color:var(--bone);
  }
  .callbar .dot{width:8px;height:8px;border-radius:50%;background:var(--gold);animation:pulse 2.4s ease-in-out infinite}
  .callbar b{font-family:var(--mono);font-weight:500;font-size:15px}
  .callbar span{font-size:13px;color:var(--bone-dim)}
}

/* ---------- reveals ---------- */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .6s cubic-bezier(.23,1,.32,1),transform .6s cubic-bezier(.23,1,.32,1)}
[data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
}

/* ---------- cinematic scrub hero ---------- */
.cine{height:260vh;position:relative;background:var(--black)}
.cine-sticky{
  position:sticky;top:64px;height:calc(100vh - 64px);height:calc(100svh - 64px);
  overflow:hidden;display:flex;align-items:center;
}
.cine-poster,.cine video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.cine-poster{animation:kenburns 22s ease-out forwards}
@keyframes kenburns{from{transform:scale(1)}to{transform:scale(1.07)}}
.cine video{display:none}
.cine-veil{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(120% 90% at 30% 40%, transparent 30%, rgba(7,7,7,.55) 100%),
    linear-gradient(180deg, rgba(7,7,7,.55), rgba(7,7,7,.12) 30%, rgba(7,7,7,.16) 62%, rgba(7,7,7,.92) 100%);
}
.cine-content{position:relative;z-index:1;will-change:transform,opacity}
.cine-content .lede{color:var(--bone-dim)}
.cine-content h1{text-shadow:0 2px 30px rgba(7,7,7,.85)}
.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:1;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--bone-dim);display:flex;flex-direction:column;align-items:center;gap:10px;
}
.scroll-hint .line{width:1px;height:34px;background:var(--bone-dim);transform-origin:top;animation:hintline 2.2s cubic-bezier(.77,0,.175,1) infinite}
@keyframes hintline{0%{transform:scaleY(0)}45%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}

/* scrub engages only where it can be excellent: precise pointer + motion OK */
@media (hover:hover) and (prefers-reduced-motion: no-preference){
  .cine.scrubbing video{display:block}
  .cine.scrubbing .cine-poster{animation:none;opacity:0}
}
@media (hover:none){
  .cine{height:auto}
  .cine-sticky{position:relative}
}
@media (prefers-reduced-motion:reduce){
  .cine{height:auto}
  .cine-sticky{position:relative}
  .cine-poster{animation:none}
}

/* parallax photo-band images get zoom headroom */
.photo-band>img{transform:scale(1.12);will-change:transform}