/* TimeWarden — editorial horology catalogue.
   Cream paper, hairline rules, espresso chapters, amber & caramel accents.
   Single family (Hanken Grotesk) with weight contrast doing the talking,
   matching the app's design system in src/theme.js. */

:root {
  --cream: #fbf4e9;
  --cream-deep: #f7e8d5;
  --paper: #fff9f0;
  --card: #fffefb;
  --white: #ffffff;
  --ink: #221b16;
  --ink-soft: #6f6258;
  --ink-faint: #8d7f73;
  --espresso: #26201a;
  --espresso-deep: #1e1913;
  --amber: #f2c477;
  --amber-soft: #fbe7c1;
  --gold: #e9b55b;
  --caramel: #9a571f;
  --caramel-deep: #7f4519;
  --line: #e7d4be;
  --line-soft: #f1e4d4;
  --line-dark: rgba(242, 196, 119, 0.16);
  --shadow-card: 0 18px 50px rgba(93, 62, 31, 0.14);
  --shadow-device: 0 34px 80px rgba(88, 56, 23, 0.26);
  --sans: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
::selection { background: var(--amber); color: var(--ink); }
:focus-visible { outline: 3px solid var(--caramel); outline-offset: 4px; border-radius: 2px; }

.shell { width: min(1200px, calc(100% - 48px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 300; left: 16px; top: 12px; transform: translateY(-160%); padding: 10px 16px; background: var(--ink); color: #fff; border-radius: 10px; text-decoration: none; transition: transform 0.15s ease; }
.skip-link:focus { transform: none; }

h1, h2, h3, p, dl, ul, ol, figure { margin: 0; }

/* ————— Reveal-on-scroll (JS adds .revealed; no-JS keeps everything visible) ————— */
html.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.65, 0.25, 1); }
html.js [data-reveal].revealed { opacity: 1; transform: none; }

/* ============================== HEADER ============================== */
.site-header { position: fixed; inset: 0 0 auto; z-index: 100; border-bottom: 1px solid transparent; transition: background 0.25s ease, border-color 0.25s ease; }
.site-header.scrolled { background: rgba(251, 244, 233, 0.9); border-color: var(--line); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.nav-row { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.wordmark { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 800; font-size: 1.16rem; letter-spacing: -0.03em; }
.wordmark img { border-radius: 11px; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav > a:not(.button) { position: relative; text-decoration: none; color: var(--ink-soft); font-size: 0.83rem; font-weight: 700; letter-spacing: 0.02em; }
.site-nav > a:not(.button)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 2px; background: var(--caramel); transition: right 0.22s ease; }
.site-nav > a:not(.button):hover { color: var(--caramel); }
.site-nav > a:not(.button):hover::after { right: 0; }
.menu-button { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 10px; cursor: pointer; }
.menu-button span[aria-hidden] { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--ink); border-radius: 2px; transition: transform 0.2s, opacity 0.2s; }

/* ============================== BUTTONS ============================== */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 13px 26px;
  border: 1px solid var(--ink); border-radius: 999px;
  background: var(--ink); color: #fff8ee;
  text-decoration: none; font-weight: 700; font-size: 0.93rem; letter-spacing: 0.01em;
  box-shadow: 0 12px 28px rgba(40, 34, 29, 0.18);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.button:hover { transform: translateY(-2px); background: #3d332b; box-shadow: 0 16px 34px rgba(40, 34, 29, 0.22); }
.button:active { transform: none; }
.button svg { flex: none; }
.button-small { min-height: 42px; padding: 9px 18px; font-size: 0.84rem; box-shadow: none; }
.button-gold { border-color: var(--amber); background: var(--amber); color: var(--ink); box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3); }
.button-gold:hover { background: var(--amber-soft); box-shadow: 0 16px 34px rgba(0, 0, 0, 0.34); }
.text-link { display: inline-flex; align-items: center; gap: 7px; text-decoration: none; font-weight: 700; font-size: 0.93rem; color: var(--caramel); border-bottom: 1px solid rgba(154, 87, 31, 0.4); padding-bottom: 2px; }
.text-link:hover { border-color: var(--caramel); }

/* ============================== SHARED EDITORIAL PIECES ============================== */
.chapter-label {
  display: flex; align-items: center; gap: 14px; margin-bottom: 22px;
  color: var(--caramel); font-size: 0.74rem; font-weight: 800;
  letter-spacing: 0.22em; text-transform: uppercase;
}
.chapter-label::before { content: ""; width: 44px; height: 1px; background: currentColor; opacity: 0.55; }
.chapter-label.gold { color: var(--gold); }

h1, h2 { font-weight: 800; letter-spacing: -0.04em; }
h1 em, h2 em { font-style: normal; color: var(--caramel); }

.chapter-head { max-width: 780px; margin-bottom: 64px; }
.chapter-head h2 { font-size: clamp(2.5rem, 5vw, 4.1rem); line-height: 1.02; }
.chapter-lede { max-width: 640px; margin-top: 22px; color: var(--ink-soft); font-size: 1.04rem; line-height: 1.75; }
.chapter-head.split { max-width: none; display: grid; grid-template-columns: 1fr 0.72fr; gap: 80px; align-items: end; }
.chapter-head.split .chapter-lede { margin-top: 0; }

.section { padding: 116px 0; }
.section-paper { background: var(--paper); border-block: 1px solid var(--line-soft); }

/* ============================== HERO ============================== */
.hero { position: relative; padding: 176px 0 120px; overflow: hidden; isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -3;
  background:
    radial-gradient(820px 620px at 84% 18%, rgba(242, 196, 119, 0.42), transparent 62%),
    radial-gradient(560px 460px at 8% 88%, rgba(247, 232, 213, 0.9), transparent 70%),
    linear-gradient(160deg, #fdf7ee 0%, var(--cream) 48%, #f6e6cd 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -2; opacity: 0.5;
  background-image: radial-gradient(circle at 1px 1px, rgba(105, 75, 43, 0.14) 1px, transparent 0);
  background-size: 26px 26px;
  mask-image: linear-gradient(115deg, #000 8%, transparent 58%);
  -webkit-mask-image: linear-gradient(115deg, #000 8%, transparent 58%);
}
.hero-ring { position: absolute; z-index: -1; width: 760px; height: 760px; right: -170px; top: 44px; color: var(--caramel); }
.hero-ring-spin { transform-origin: 400px 400px; animation: ring-turn 240s linear infinite; }
@keyframes ring-turn { to { transform: rotate(360deg); } }

.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.8fr); align-items: center; gap: 80px; }
.masthead-line { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; color: var(--caramel); font-size: 0.74rem; font-weight: 800; letter-spacing: 0.24em; text-transform: uppercase; }
.masthead-line .tick { width: 9px; height: 9px; border: 2px solid var(--caramel); border-radius: 50%; }
h1 { margin-bottom: 26px; font-size: clamp(3.4rem, 7.2vw, 6.2rem); line-height: 0.98; }
.hero-lede { max-width: 620px; margin-bottom: 34px; color: var(--ink-soft); font-size: 1.14rem; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; }

.hero-specs { display: flex; gap: 0; margin-top: 44px; padding: 0; border-top: 1px solid var(--line); }
.hero-specs > div { flex: 1; padding: 16px 20px 0 0; }
.hero-specs > div + div { padding-left: 20px; border-left: 1px solid var(--line); }
.hero-specs dt { color: var(--ink-faint); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
.hero-specs dd { margin: 4px 0 0; font-weight: 700; font-size: 0.95rem; }

.hero-visual { position: relative; min-height: 620px; display: grid; place-items: center; }
.hero-halo { position: absolute; width: 470px; height: 470px; border-radius: 50%; background: radial-gradient(circle at 38% 30%, #f6d9a4, #e2a952 78%); box-shadow: inset 0 0 90px rgba(255, 248, 227, 0.5), 0 40px 90px rgba(160, 106, 43, 0.28); }

.device { position: relative; padding: 9px; border: 1px solid rgba(69, 49, 29, 0.2); border-radius: 42px; background: linear-gradient(170deg, #332d28, #241f1b); box-shadow: var(--shadow-device); }
.device img { width: 100%; border-radius: 33px; }
.device::after { content: ""; position: absolute; inset: 9px; border-radius: 33px; pointer-events: none; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06); }
.device-hero { z-index: 1; width: min(292px, 78%); transform: rotate(2deg); }

.spec-card {
  position: absolute; z-index: 2; min-width: 196px; padding: 14px 18px;
  border: 1px solid var(--line); border-radius: 18px;
  background: rgba(255, 254, 251, 0.94); box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.spec-card span { display: block; color: var(--ink-faint); font-size: 0.66rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.16em; }
.spec-card strong { display: block; margin-top: 3px; font-size: 0.98rem; letter-spacing: -0.01em; }
.spec-card-top { top: 78px; right: -14px; }
.spec-card-bottom { bottom: 64px; left: -26px; }

/* ============================== CONTENTS STRIP ============================== */
.contents-strip { background: var(--espresso); color: #f4ead9; border-block: 1px solid var(--espresso-deep); }
.contents-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.contents-grid p { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 14px; align-items: baseline; margin: 0; padding: 26px 30px; border-left: 1px solid var(--line-dark); }
.contents-grid p:last-child { border-right: 1px solid var(--line-dark); }
.contents-grid span { grid-row: span 2; color: rgba(242, 196, 119, 0.45); font-size: 1.9rem; font-weight: 800; letter-spacing: -0.04em; }
.contents-grid strong { color: var(--amber); font-size: 1.02rem; font-weight: 800; letter-spacing: -0.01em; }
.contents-grid em { color: #b3a695; font-style: normal; font-size: 0.78rem; }

/* ============================== CHAPTER I — WORKFLOW ============================== */
.workflow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 0; list-style: none; }
.workflow-card {
  position: relative; min-height: 320px; padding: 34px 32px 30px;
  display: flex; flex-direction: column;
  border: 1px solid var(--line); border-radius: 26px; background: var(--card);
  box-shadow: 0 10px 30px rgba(93, 62, 31, 0.06);
}
.workflow-card.is-featured { background: var(--amber-soft); border-color: rgba(154, 87, 31, 0.28); transform: translateY(-16px); box-shadow: var(--shadow-card); }
.workflow-number { color: rgba(154, 87, 31, 0.26); font-size: 3.6rem; font-weight: 800; letter-spacing: -0.05em; line-height: 1; }
.workflow-card h3 { margin: 22px 0 12px; font-size: 1.42rem; font-weight: 800; letter-spacing: -0.025em; }
.workflow-card p { color: var(--ink-soft); font-size: 0.92rem; }
.workflow-foot { margin-top: auto; padding-top: 22px; color: var(--ink-faint); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
.workflow-foot::before { content: ""; display: block; width: 100%; height: 1px; margin-bottom: 14px; background: var(--line); }
.workflow-card.is-featured .workflow-foot::before { background: rgba(154, 87, 31, 0.22); }
.disclaimer { max-width: 860px; margin: 34px auto 0; text-align: center; color: var(--ink-faint); font-size: 0.76rem; }

/* ============================== CHAPTER II — FEATURES ============================== */
.feature-stack { display: grid; gap: 140px; }
.feature-row { position: relative; display: grid; grid-template-columns: 1.05fr 0.85fr; gap: 104px; align-items: center; }
.feature-row.is-reverse .feature-copy { order: 2; }
.feature-row.is-reverse .feature-figure { order: 1; }
.feature-index { margin-bottom: 16px; color: var(--caramel); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.2em; text-transform: uppercase; }
.feature-copy h3 { margin-bottom: 18px; font-size: clamp(1.9rem, 3.4vw, 2.7rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.08; }
.feature-copy > p { max-width: 540px; color: var(--ink-soft); font-size: 0.99rem; }

.ledger { margin-top: 30px; }
.ledger > div { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; padding: 13px 2px; border-top: 1px solid var(--line); }
.ledger > div:last-child { border-bottom: 1px solid var(--line); }
.ledger dt { color: var(--ink-faint); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.ledger dd { margin: 0; font-weight: 700; font-size: 0.92rem; text-align: right; }

.feature-figure { position: relative; display: grid; place-items: center; padding: 46px 0; }
.feature-figure::before {
  content: ""; position: absolute; inset: 0; z-index: 0; border-radius: 34px;
  background: linear-gradient(165deg, var(--cream-deep), #f2ddbd);
  border: 1px solid var(--line);
}
.feature-row:nth-child(2) .feature-figure::before { background: linear-gradient(165deg, #f4e3d9, #ecd0c2); }
.feature-row:nth-child(3) .feature-figure::before { background: linear-gradient(165deg, #e3e8e9, #d5dfe2); }
.feature-figure .device { z-index: 1; width: min(268px, 66%); }
.plate-chip {
  position: absolute; z-index: 2; left: 26px; bottom: 26px; padding: 10px 16px;
  border: 1px solid rgba(79, 56, 33, 0.16); border-radius: 999px;
  background: rgba(255, 254, 251, 0.92); box-shadow: 0 12px 30px rgba(90, 59, 28, 0.14);
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.04em;
}

/* ============================== CHAPTER III — PROVENANCE ============================== */
.section-deep { background: linear-gradient(175deg, var(--espresso) 0%, var(--espresso-deep) 100%); color: #f4ead9; overflow: hidden; }
.section-deep .chapter-label { color: var(--gold); }
.section-deep h2 { color: #fff8ee; }
.section-deep h2 em { color: var(--amber); }
.section-deep .chapter-lede { color: #b3a695; }
.provenance-grid { display: grid; grid-template-columns: 1fr 0.88fr; gap: 100px; align-items: center; }
.provenance-copy h2 { font-size: clamp(2.5rem, 5vw, 4.1rem); line-height: 1.02; }
.provenance-points { margin-top: 38px; }
.provenance-points > div { display: flex; gap: 18px; align-items: baseline; padding: 16px 0; border-top: 1px solid var(--line-dark); }
.provenance-points > div:last-child { border-bottom: 1px solid var(--line-dark); }
.provenance-points span { min-width: 26px; color: var(--gold); font-weight: 800; font-size: 0.9rem; }
.provenance-points p { margin: 0; color: #b3a695; font-size: 0.94rem; }
.provenance-points strong { color: #f4ead9; }

.dossier { position: relative; min-height: 560px; display: grid; place-items: center; }
.dossier-card { position: absolute; width: min(390px, 86%); min-height: 480px; border-radius: 10px; }
.dossier-back { transform: translate(40px, -10px) rotate(6deg); background: linear-gradient(160deg, #d89f53, #b97e37); box-shadow: 0 30px 70px rgba(0, 0, 0, 0.4); }
.dossier-front { z-index: 1; padding: 40px 42px; transform: rotate(-2deg); background: var(--paper); color: var(--ink); border: 1px solid rgba(75, 52, 29, 0.2); box-shadow: 0 34px 80px rgba(0, 0, 0, 0.45); }
.dossier-head { display: flex; align-items: center; gap: 14px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.dossier-head img { border-radius: 11px; }
.dossier-head p { margin: 0; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; color: var(--caramel); }
.dossier-head p span { display: block; margin-top: 2px; color: var(--ink-faint); letter-spacing: 0.1em; }
.dossier-front h3 { margin: 24px 0 6px; font-size: 1.9rem; font-weight: 800; letter-spacing: -0.03em; }
.dossier-front dl { margin-top: 18px; }
.dossier-front dl div { display: flex; justify-content: space-between; padding: 11px 0; border-top: 1px solid var(--line); font-size: 0.84rem; }
.dossier-front dt { color: var(--ink-soft); }
.dossier-front dd { margin: 0; font-weight: 800; }
.dossier-foot { margin-top: 26px; color: var(--ink-faint); font-size: 0.74rem; }
.dossier-seal {
  position: absolute; z-index: 2; right: 4%; bottom: 6%;
  display: grid; place-items: center; width: 92px; height: 92px;
  border: 2px solid rgba(233, 181, 91, 0.75); border-radius: 50%;
  color: var(--gold); font-weight: 800; font-size: 1.15rem; letter-spacing: 0.08em;
  transform: rotate(10deg); box-shadow: 0 0 0 6px rgba(233, 181, 91, 0.12);
}
.dossier-seal i { position: absolute; top: 12px; font-size: 0.7rem; font-style: normal; opacity: 0.8; }

/* ============================== PLATES — GALLERY ============================== */
.plate-gallery {
  display: flex; gap: 28px;
  padding: 12px max(24px, calc((100vw - 1200px) / 2)) 38px;
  overflow-x: auto; scroll-snap-type: x mandatory;
  /* Snap points must account for the inline padding, otherwise scrollLeft 0 is not a
     valid resting position and the strip springs back off the very-left edge. */
  scroll-padding-inline: max(24px, calc((100vw - 1200px) / 2));
  scrollbar-color: var(--amber) transparent;
}
.plate-gallery figure { flex: 0 0 246px; scroll-snap-align: start; }
.plate-gallery .device { padding: 7px; border-radius: 36px; }
.plate-gallery .device img { border-radius: 29px; }
.plate-gallery .device::after { inset: 7px; border-radius: 29px; }
.plate-gallery figcaption { display: flex; align-items: baseline; gap: 10px; margin-top: 16px; font-weight: 700; font-size: 0.98rem; }
.plate-gallery figcaption span { color: var(--caramel); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }

/* ============================== PREMIUM ============================== */
.premium-section { padding-top: 30px; }
.premium-card {
  position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 80px;
  padding: 80px; overflow: hidden; border-radius: 36px;
  background: linear-gradient(160deg, #2c251e 0%, var(--espresso-deep) 90%);
  color: #f4ead9; box-shadow: 0 34px 80px rgba(46, 31, 19, 0.24);
}
.premium-card::after {
  content: ""; position: absolute; width: 460px; height: 460px; right: -190px; top: -210px;
  border: 1px solid rgba(233, 181, 91, 0.3); border-radius: 50%;
  box-shadow: 0 0 0 74px rgba(233, 181, 91, 0.045), 0 0 0 148px rgba(233, 181, 91, 0.03);
}
.premium-copy { position: relative; z-index: 1; }
.premium-copy h2 { margin-bottom: 20px; color: #fff8ee; font-size: clamp(2.4rem, 4.6vw, 3.9rem); line-height: 1.03; }
.premium-copy h2 em { color: var(--amber); }
.premium-copy > p { max-width: 560px; color: #b3a695; }
.premium-copy .button { margin-top: 28px; }
.premium-copy small { display: block; margin-top: 16px; color: #8d8177; font-size: 0.72rem; }
.premium-benefits { position: relative; z-index: 1; display: grid; gap: 14px; align-content: center; padding: 0; list-style: none; }
.premium-benefits li {
  display: grid; grid-template-columns: 46px 1fr; align-items: start; padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 18px; background: rgba(255, 255, 255, 0.045);
}
.premium-benefits li > span { color: var(--amber); font-size: 1.2rem; line-height: 1.3; }
.premium-benefits strong { display: block; font-size: 1.02rem; font-weight: 800; letter-spacing: -0.01em; }
.premium-benefits small { color: #a99d90; font-size: 0.82rem; }

/* ============================== FAQ ============================== */
.faq-grid { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 100px; align-items: start; }
.faq-intro { position: sticky; top: 124px; }
.faq-intro h2 { font-size: clamp(2.3rem, 4.4vw, 3.6rem); line-height: 1.04; margin-bottom: 20px; }
.faq-intro p { color: var(--ink-soft); }
.faq-intro a { color: var(--caramel); font-weight: 700; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 25px 52px 25px 0; cursor: pointer; list-style: none; font-size: 1.12rem; font-weight: 800; letter-spacing: -0.015em; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-marker { position: absolute; right: 6px; top: 50%; width: 18px; height: 18px; transform: translateY(-50%); }
.faq-marker::before, .faq-marker::after { content: ""; position: absolute; inset: 8px 0; background: var(--caramel); border-radius: 2px; transition: transform 0.22s ease; }
.faq-marker::after { transform: rotate(90deg); }
.faq-list details[open] .faq-marker::after { transform: rotate(0deg); }
.faq-list details p { max-width: 700px; padding: 0 52px 26px 0; color: var(--ink-soft); font-size: 0.93rem; }

/* ============================== FINAL CTA ============================== */
.final-cta { position: relative; padding: 128px 0; overflow: hidden; text-align: center; background: linear-gradient(125deg, #f6e2c1 0%, #eec883 100%); }
.final-ring { position: absolute; width: 680px; height: 680px; left: 50%; top: 50%; transform: translate(-50%, -50%); color: var(--caramel); opacity: 0.5; }
.final-cta-inner { position: relative; z-index: 1; }
.final-cta-inner > img { margin: 0 auto 26px; border-radius: 19px; box-shadow: 0 16px 36px rgba(84, 54, 25, 0.24); }
.final-cta .chapter-label { justify-content: center; }
.final-cta .chapter-label::after { content: ""; width: 44px; height: 1px; background: currentColor; opacity: 0.55; }
.final-cta h2 { margin-bottom: 18px; font-size: clamp(2.8rem, 6vw, 4.8rem); line-height: 1.01; }
.final-cta .chapter-lede { max-width: 560px; margin: 0 auto 32px; }

/* ============================== FOOTER ============================== */
.site-footer { padding: 76px 0 26px; background: var(--espresso-deep); color: #cfc4b7; }
.footer-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 100px; }
.footer-brand .wordmark { color: #fff8ee; }
.footer-brand p { max-width: 380px; margin-top: 20px; color: #9b9083; font-size: 0.87rem; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-links h2 { margin: 0 0 16px; color: var(--amber); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.2em; text-transform: uppercase; }
.footer-links a { display: block; margin: 10px 0; color: #b6aa9c; text-decoration: none; font-size: 0.84rem; }
.footer-links a:hover { color: #fff8ee; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 64px; padding-top: 22px; border-top: 1px solid var(--line-dark); color: #948a7e; font-size: 0.72rem; }
.footer-bottom p { margin: 0; }

/* ============================== RESPONSIVE ============================== */
@media (max-width: 1060px) {
  .hero-grid { gap: 44px; }
  .spec-card-top { right: -6px; }
  .spec-card-bottom { left: -8px; }
  .feature-row { gap: 60px; }
  .provenance-grid { gap: 60px; }
  .premium-card { padding: 60px 48px; gap: 52px; }
  .contents-grid { grid-template-columns: repeat(2, 1fr); }
  .contents-grid p { border-left: 0; padding-inline: 6px 20px; }
  .contents-grid p:last-child { border-right: 0; }
}

@media (max-width: 780px) {
  html { scroll-padding-top: 76px; }
  .shell { width: min(100% - 32px, 1200px); }
  .nav-row { min-height: 70px; }
  .menu-button { display: block; }
  .menu-button[aria-expanded="true"] span[aria-hidden]:first-of-type { transform: translateY(7px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span[aria-hidden]:nth-of-type(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span[aria-hidden]:last-of-type { transform: translateY(-7px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 70px 0 auto; display: none; max-height: calc(100dvh - 70px); padding: 22px 20px 30px; overflow-y: auto; overscroll-behavior: contain; background: rgba(251, 244, 233, 0.98); border-bottom: 1px solid var(--line); box-shadow: 0 20px 45px rgba(57, 39, 22, 0.12); }
  .site-nav.open { display: grid; gap: 4px; }
  .site-nav > a:not(.button) { padding: 12px 4px; }
  .site-nav > a:not(.button)::after { display: none; }
  .site-nav .button { margin-top: 10px; }

  .hero { padding: 128px 0 76px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-ring { width: 540px; height: 540px; right: -220px; top: auto; bottom: -80px; }
  h1 { font-size: clamp(3rem, 14.5vw, 4.8rem); }
  .hero-lede { font-size: 1.03rem; }
  .hero-visual { min-height: 540px; }
  .hero-halo { width: 380px; height: 380px; }
  .device-hero { width: 250px; }
  .spec-card { min-width: 168px; padding: 12px 15px; }
  .spec-card-top { top: 44px; right: 0; }
  .spec-card-bottom { bottom: 34px; left: 0; }
  .hero-specs { flex-direction: column; border-top: 0; }
  .hero-specs > div { display: flex; align-items: baseline; justify-content: space-between; padding: 12px 2px; border-top: 1px solid var(--line); }
  .hero-specs > div + div { padding-left: 2px; border-left: 0; }
  .hero-specs dd { margin: 0; }

  .contents-grid { grid-template-columns: 1fr; padding: 10px 0; }
  .contents-grid p { padding: 13px 6px; }

  .section { padding: 84px 0; }
  .chapter-head { margin-bottom: 44px; }
  .chapter-head.split { grid-template-columns: 1fr; gap: 18px; }
  .workflow-grid { grid-template-columns: 1fr; }
  .workflow-card { min-height: 0; }
  .workflow-card.is-featured { transform: none; }

  .feature-stack { gap: 84px; }
  .feature-row, .feature-row.is-reverse { grid-template-columns: 1fr; gap: 40px; }
  .feature-row.is-reverse .feature-copy { order: 1; }
  .feature-row.is-reverse .feature-figure { order: 2; }
  .feature-figure { padding: 38px 0; }
  .feature-figure .device { width: 236px; }

  .provenance-grid { grid-template-columns: 1fr; gap: 48px; }
  .dossier { min-height: 520px; }
  .dossier-back { transform: translate(20px, -10px) rotate(5deg); }

  .plate-gallery { gap: 20px; padding-inline: 16px; scroll-padding-inline: 16px; }
  .plate-gallery figure { flex-basis: 216px; }

  .premium-card { grid-template-columns: 1fr; padding: 48px 26px; gap: 44px; border-radius: 28px; }
  .faq-grid { grid-template-columns: 1fr; gap: 44px; }
  .faq-intro { position: static; }

  .footer-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { display: grid; gap: 6px; }
}

@media (max-width: 440px) {
  .hero-actions { gap: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-visual { min-height: 480px; }
  .hero-halo { width: 320px; height: 320px; }
  .device-hero { width: 224px; }
  .chapter-head h2, .provenance-copy h2 { font-size: 2.4rem; }
  .feature-copy h3 { font-size: 1.75rem; }
  .dossier-front { padding: 30px 26px; }
  .dossier-card { min-height: 440px; }
  .footer-links { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js [data-reveal] { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}