/* Local Proof Package implementation — 2026-08-25. */

:root {
  --proof-warm: #f0eee8;
  --proof-sage: #dfe4dc;
  --proof-rose: #eadfdc;
}

.proof-strip {
  width: min(1340px, calc(100% - 44px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(18,17,16,.22);
  border-bottom: 1px solid rgba(18,17,16,.22);
  background: rgba(var(--paper-rgb), .76);
}
.proof-strip span {
  padding: 16px 18px;
  border-left: 1px solid rgba(18,17,16,.16);
  font: 400 9px/1.45 var(--font-mono);
  letter-spacing: .1em;
  text-align: center;
  text-transform: uppercase;
}
.proof-strip span:first-child { border-left: 0; }

.proof-package-section {
  padding: clamp(82px, 9vw, 132px) clamp(22px, 7vw, 110px);
  border-bottom: 1px solid rgba(18,17,16,.18);
  background: rgba(var(--paper-rgb), .62);
}
.proof-package-section.is-warm { background: var(--proof-warm); }
.proof-package-section.is-sage { background: var(--proof-sage); }
.proof-package-section.is-dark { color: var(--paper); background: var(--ink); }
.proof-package-heading {
  display: grid;
  grid-template-columns: .42fr 1.05fr .7fr;
  gap: clamp(28px, 5vw, 76px);
  align-items: start;
  margin-bottom: 48px;
}
.proof-package-heading h2,
.proof-split h2,
.sample-hero h1,
.about-hero h1,
.faq-hero h1 {
  margin: 0;
  font: 400 clamp(54px, 5.8vw, 90px)/.94 var(--font-display);
  letter-spacing: -.035em;
}
.proof-package-heading > p:not(.eyebrow),
.proof-split-copy > p,
.about-hero p,
.faq-hero p {
  margin: 8px 0 0;
  color: #45433f;
  font-size: 16px;
  line-height: 1.7;
}
.is-dark .proof-package-heading > p:not(.eyebrow),
.is-dark .proof-split-copy > p { color: rgba(var(--paper-rgb), .68); }
.is-dark .eyebrow { color: rgba(var(--paper-rgb), .55); }

.sample-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.sample-preview-grid figure,
.proof-chain-pages figure { min-width: 0; margin: 0; }
.sample-preview-grid a,
.proof-chain-pages a {
  display: block;
  border: 1px solid rgba(18,17,16,.18);
  background: #fff;
  overflow: hidden;
}
.sample-preview-grid img,
.proof-chain-pages img { display: block; width: 100%; height: auto; }
.sample-preview-grid figcaption,
.proof-chain-pages figcaption {
  padding: 12px 0 0;
  color: var(--muted);
  font: 400 9px/1.55 var(--font-mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.sample-preview-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.sample-disclosure {
  margin: 0 0 26px;
  padding: 14px 18px;
  border: 1px solid rgba(18,17,16,.2);
  background: rgba(var(--paper-rgb), .78);
  font: 400 10px/1.55 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.proof-chain {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: clamp(46px, 8vw, 118px);
  align-items: start;
}
.proof-chain-copy h3 {
  margin: 0 0 22px;
  font: 400 clamp(38px, 4.4vw, 66px)/.98 var(--font-display);
  letter-spacing: -.03em;
}
.proof-chain-copy > p { margin: 0 0 24px; color: #45433f; font-size: 16px; line-height: 1.72; }
.proof-chain-list { margin: 30px 0 0; padding: 0; list-style: none; border-top: 1px solid rgba(18,17,16,.23); }
.proof-chain-list li { display: grid; grid-template-columns: 42px 1fr; gap: 14px; padding: 17px 0; border-bottom: 1px solid rgba(18,17,16,.18); }
.proof-chain-list span { color: var(--muted); font: 400 9px/1.45 var(--font-mono); }
.proof-chain-list strong { display: block; margin-bottom: 5px; font: 400 21px/1.15 var(--font-display); }
.proof-chain-list small { color: var(--muted); font-size: 12px; line-height: 1.5; }
.proof-chain-pages { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.proof-split {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: clamp(54px, 9vw, 132px);
  align-items: start;
}
.proof-split h2 { font-size: clamp(50px, 5.2vw, 82px); }
.proof-split-copy > p { margin-top: 0; }
.proof-split-copy > p + p { margin-top: 20px; }

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 36px;
  border: 1px solid rgba(18,17,16,.2);
  background: rgba(var(--paper-rgb), .76);
}
.comparison-column { padding: 26px; }
.comparison-column + .comparison-column { border-left: 1px solid rgba(18,17,16,.2); }
.comparison-column h3 { margin: 0 0 18px; font: 400 29px/1.1 var(--font-display); }
.comparison-column ul { margin: 0; padding-left: 18px; }
.comparison-column li { margin: 0 0 13px; color: #45433f; font-size: 13px; line-height: 1.55; }

.process-visual {
  min-height: 430px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 18px;
  border: 1px solid rgba(18,17,16,.2);
  background: rgba(var(--paper-rgb), .55);
}
.process-visual figure { margin: 0; overflow: hidden; border: 1px solid rgba(18,17,16,.15); background: #fff; }
.process-visual img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; }
.process-photo-placeholder {
  grid-column: 1 / -1;
  min-height: 120px;
  display: grid;
  place-items: center;
  padding: 24px;
  border: 1px dashed rgba(18,17,16,.35);
  color: var(--muted);
  background: repeating-linear-gradient(-45deg, rgba(18,17,16,.025), rgba(18,17,16,.025) 8px, transparent 8px, transparent 16px);
  font: 400 9px/1.6 var(--font-mono);
  letter-spacing: .1em;
  text-align: center;
  text-transform: uppercase;
}
.process-photo {
  grid-column: 1 / -1;
  margin: 0;
  border: 1px solid rgba(18,17,16,.15);
  background: #fff;
  overflow: hidden;
}
.process-photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.process-photo figcaption {
  padding: 12px 14px;
  border-top: 1px solid rgba(18,17,16,.15);
  color: var(--muted);
  background: rgba(var(--paper-rgb), .88);
  font: 400 9px/1.55 var(--font-mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.process-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 42px;
  border: 1px solid rgba(18,17,16,.2);
}
.process-strip article { min-height: 170px; padding: 22px; border-left: 1px solid rgba(18,17,16,.18); }
.process-strip article:first-child { border-left: 0; }
.process-strip span { color: var(--muted); font: 400 9px/1.4 var(--font-mono); }
.process-strip h3 { margin: 22px 0 8px; font: 400 24px/1.08 var(--font-display); }
.process-strip p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.55; }

.guarantee-card {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid rgba(18,17,16,.26);
  background: rgba(var(--paper-rgb), .82);
}
.guarantee-card h2 { margin: 0; font: 400 clamp(42px, 5vw, 72px)/.95 var(--font-display); letter-spacing: -.03em; }
.guarantee-card p { max-width: 850px; margin: 24px 0 0; color: #45433f; font-size: 16px; line-height: 1.72; }
.guarantee-card .text-link { margin-top: 25px; }

.compact-boundary {
  padding: 22px;
  border-top: 1px solid rgba(18,17,16,.22);
  border-bottom: 1px solid rgba(18,17,16,.22);
  background: var(--paper);
  text-align: center;
  font: 400 10px/1.55 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sample-hero,
.about-hero,
.faq-hero {
  width: min(1340px, calc(100% - 44px));
  margin: 0 auto;
  padding: clamp(88px, 10vw, 148px) 0 clamp(68px, 8vw, 110px);
}
.sample-hero { display: grid; grid-template-columns: 1fr .72fr; gap: clamp(46px, 7vw, 110px); align-items: center; }
.sample-hero h1,
.about-hero h1,
.faq-hero h1 { font-size: clamp(62px, 7vw, 108px); }
.sample-hero-copy > p:not(.eyebrow) { max-width: 660px; margin: 28px 0 0; color: #45433f; font-size: clamp(17px, 1.4vw, 21px); line-height: 1.62; }
.sample-cover { margin: 0; border: 1px solid rgba(18,17,16,.2); background: #fff; box-shadow: 0 28px 70px rgba(18,17,16,.08); }
.sample-cover img { display: block; width: 100%; height: auto; }

.about-hero { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(46px, 8vw, 120px); align-items: end; }
.about-owner-card { padding: clamp(30px, 5vw, 56px); border: 1px solid rgba(18,17,16,.22); background: var(--proof-sage); }
.about-owner-card h2 { margin: 0; font: 400 clamp(36px, 4vw, 58px)/1 var(--font-display); }
.about-owner-card p { margin: 20px 0 0; color: #45433f; font-size: 15px; line-height: 1.7; }

.faq-hero { max-width: 1000px; }
.proof-faq { width: min(1000px, calc(100% - 44px)); margin: 0 auto; padding: 0 0 clamp(90px, 10vw, 140px); }
.proof-faq h2 { margin: 64px 0 20px; font: 400 clamp(38px, 4.6vw, 64px)/1 var(--font-display); }
.proof-faq details { border-top: 1px solid rgba(18,17,16,.22); }
.proof-faq details:last-of-type { border-bottom: 1px solid rgba(18,17,16,.22); }
.proof-faq summary { padding: 22px 0; cursor: pointer; list-style: none; font: 400 clamp(24px, 2.7vw, 34px)/1.15 var(--font-display); }
.proof-faq summary::-webkit-details-marker { display: none; }
.proof-faq summary::after { content: "+"; float: right; color: var(--muted); font-family: var(--font-mono); }
.proof-faq details[open] summary::after { content: "−"; }
.proof-faq .answer { max-width: 820px; padding: 0 0 28px; }
.proof-faq .answer p { margin: 0 0 14px; color: #45433f; font-size: 15px; line-height: 1.72; }

a:focus-visible,
button:focus-visible,
summary:focus-visible { outline: 3px solid #121110; outline-offset: 4px; }
.is-dark a:focus-visible { outline-color: var(--paper); }

@media (max-width: 1120px) {
  .proof-package-heading { grid-template-columns: 1fr 1.6fr; }
  .proof-package-heading > p:not(.eyebrow) { grid-column: 2; }
  .sample-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-chain,
  .proof-split,
  .sample-hero,
  .about-hero { grid-template-columns: 1fr; }
  .sample-cover { max-width: 580px; }
}

@media (max-width: 720px) {
  .proof-strip { grid-template-columns: 1fr 1fr; width: calc(100% - 32px); }
  .proof-strip span:nth-child(3) { border-left: 0; }
  .proof-strip span:nth-child(n+3) { border-top: 1px solid rgba(18,17,16,.16); }
  .proof-package-section { padding-inline: 20px; }
  .proof-package-heading { grid-template-columns: 1fr; }
  .proof-package-heading > p:not(.eyebrow) { grid-column: 1; }
  .proof-chain-pages,
  .comparison-grid,
  .process-strip { grid-template-columns: 1fr; }
  .comparison-column + .comparison-column { border-left: 0; border-top: 1px solid rgba(18,17,16,.2); }
  .process-strip article { min-height: 0; border-left: 0; border-top: 1px solid rgba(18,17,16,.18); }
  .process-strip article:first-child { border-top: 0; }
  .sample-hero,
  .about-hero,
  .faq-hero { width: calc(100% - 32px); }
  .sample-preview-actions { display: grid; }
}

@media (max-width: 520px) {
  .sample-preview-grid { grid-template-columns: 1fr; }
  .proof-package-heading h2,
  .proof-split h2 { font-size: 50px; }
  .sample-hero h1,
  .about-hero h1,
  .faq-hero h1 { font-size: 58px; }
  .process-visual { min-height: 0; grid-template-columns: 1fr; }
  .process-photo-placeholder { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}