/* ==========================================================================
   PROTEUS DESIGN — FIELD MANUAL VOL. I
   Editorial-scientific aesthetic.
   Set in Newsreader (display + text) + IBM Plex Mono (instrument).
   ========================================================================== */

/* ---------- Tokens ------------------------------------------------------- */

:root {
  /* Paper / ink palette */
  --paper:        #ede4d0;
  --paper-tint:   #f6efe0;
  --paper-deep:   #e3d8bf;
  --ink:          #1a1813;
  --ink-mid:      #3d3830;
  --ink-soft:     #645b4f;
  --ink-faint:    #8a8071;
  --rule:         #c4b598;
  --rule-soft:    #d8c9ac;

  /* Single accent — Proteus brand red */
  --amber:        #d62828;
  --amber-deep:   #a51c1c;
  --amber-tint:   #f5d8d8;

  /* Reverse palette (dark sections) */
  --dark:         #1a1612;
  --dark-tint:    #2a241d;
  --dark-paper:   #f0e8d3;
  --dark-paper-soft: #c8bda5;
  --dark-amber:   #ea4040;

  /* Type families */
  --serif:  "Newsreader", "Times New Roman", Times, serif;
  --mono:   "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Type scale (fluid) */
  --t-display:  clamp(2.75rem, 6.5vw, 5.5rem);
  --t-h2:       clamp(2rem, 4vw, 3.25rem);
  --t-h3:       1.5rem;
  --t-body:     1.0625rem;
  --t-deck:     1.1875rem;
  --t-small:    0.9375rem;
  --t-mono:     0.8125rem;
  --t-mono-sm:  0.7rem;

  /* Spacing */
  --gap-section: clamp(4.5rem, 9vw, 8rem);
  --gap-block:   clamp(2rem, 4vw, 3.5rem);
  --container:   78rem;
  --text-col:    38rem;

  /* Misc */
  --rule-w: 1px;
  --rule-w-thick: 2px;
}

/* ---------- Reset / Base ------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--t-body);
  line-height: 1.6;
  font-weight: 400;
  font-optical-sizing: auto;

  /* Subtle paper texture via SVG noise */
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.10  0 0 0 0 0.09  0 0 0 0 0.07  0 0 0 0.045 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 160px 160px;
  background-blend-mode: multiply;
}

img { max-width: 100%; display: block; height: auto; }

a { color: inherit; text-decoration: none; }

button {
  border: none;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

ul, ol { list-style: none; padding: 0; margin: 0; }
dl { margin: 0; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

::selection {
  background: var(--amber);
  color: var(--paper-tint);
}

/* ---------- Reusable helpers -------------------------------------------- */

.section-eyebrow {
  font-family: var(--mono);
  font-size: var(--t-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  margin: 0 0 1.5rem;
  display: inline-flex;
  align-items: baseline;
  gap: 0.85em;
}
.section-eyebrow::before {
  content: "";
  display: inline-block;
  width: 2.5rem;
  height: 1px;
  background: var(--amber);
  position: relative;
  top: -0.28em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 1.05rem 1.7rem;
  font-family: var(--mono);
  font-size: var(--t-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border: 1px solid var(--ink);
  position: relative;
  overflow: hidden;
  transition: color 0.4s ease;
  isolation: isolate;
  white-space: nowrap;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: -1;
}
.btn:hover::before { transform: translateX(0); }

.btn-primary {
  background: var(--ink);
  color: var(--paper-tint);
  border-color: var(--ink);
}
.btn-primary::before { background: var(--amber); }
.btn-primary:hover { color: var(--paper-tint); border-color: var(--amber); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  flex-direction: column;
  align-items: flex-start;
  padding: 0.85rem 1.7rem;
  gap: 0.1rem;
}
.btn-ghost::before { background: var(--ink); }
.btn-ghost:hover { color: var(--paper-tint); }

.btn-tel-label {
  font-size: var(--t-mono-sm);
  letter-spacing: 0.18em;
  color: var(--amber);
  transition: color 0.4s;
}
.btn-ghost:hover .btn-tel-label { color: var(--dark-amber); }

.btn-tel-num {
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: none;
  font-weight: 500;
}

.btn-arrow {
  display: inline-block;
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}
.btn:hover .btn-arrow { transform: translateX(0.3em); }

/* ---------- Folio / date bar -------------------------------------------- */

.folio {
  background: var(--ink);
  color: var(--paper-tint);
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--paper-tint);
}
.folio-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.6rem 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  align-items: center;
  justify-content: space-between;
}
.folio-item { display: inline-block; }
.folio-vol { color: var(--dark-amber); }
.folio-tag { color: var(--dark-paper-soft); font-style: italic; letter-spacing: 0.12em; text-transform: none; }

/* ---------- Masthead / Nav ---------------------------------------------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  background-image:
    linear-gradient(to bottom, var(--paper) 0%, var(--paper) calc(100% - 5px),
                    var(--rule-soft) calc(100% - 5px), var(--rule-soft) calc(100% - 4px),
                    transparent calc(100% - 4px), transparent calc(100% - 1px),
                    var(--ink) calc(100% - 1px), var(--ink) 100%);
}
.masthead-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.masthead-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}
.masthead-logo-mark {
  height: 54px;
  width: auto;
  display: block;
  mix-blend-mode: multiply;
}
.masthead-tagline {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
  border-left: 1px solid var(--rule);
  padding-left: 0.95rem;
  align-self: stretch;
  display: flex;
  align-items: center;
  line-height: 1.3;
  max-width: 9rem;
}

.masthead-nav {
  display: flex;
  align-items: center;
  gap: 1.85rem;
}

.masthead-link {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink);
  position: relative;
  padding: 0.5rem 0;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45em;
  transition: color 0.3s;
}
.masthead-link .link-num {
  color: var(--amber);
  font-weight: 500;
  font-size: 0.62rem;
}
.masthead-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.15rem;
  height: 1px;
  width: 100%;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}
.masthead-link:hover { color: var(--amber); }
.masthead-link:hover::after { transform: scaleX(1); }

.masthead-phone {
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  border-left: 1px solid var(--rule);
  padding-left: 1.4rem;
  transition: color 0.3s;
}
.masthead-phone:hover { color: var(--amber); }

.masthead-cta {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  background: var(--ink);
  color: var(--paper-tint);
  padding: 0.85rem 1.2rem;
  border: 1px solid var(--ink);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: color 0.3s;
}
.masthead-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--amber);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: -1;
}
.masthead-cta:hover { border-color: var(--amber); }
.masthead-cta:hover::before { transform: translateX(0); }

.masthead-toggle {
  display: none;
  width: 36px;
  height: 36px;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 0;
}
.masthead-toggle span {
  display: block;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}
.masthead-toggle.is-open span:first-child { transform: translateY(3.5px) rotate(45deg); }
.masthead-toggle.is-open span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- Cover / Hero ------------------------------------------------- */

.cover {
  position: relative;
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}

.cover-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.cover-text {
  padding-top: 0.5rem;
  animation: fadeUp 0.9s ease-out both;
}

.cover-eyebrow {
  font-family: var(--mono);
  font-size: var(--t-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-mid);
  margin: 0 0 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 0.85em;
}
.eyebrow-rule {
  display: inline-block;
  width: 3.2rem;
  height: 1px;
  background: var(--amber);
  position: relative;
  top: -0.28em;
}

.cover-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-display);
  line-height: 0.98;
  letter-spacing: -0.018em;
  margin: 0 0 1.6rem;
  font-optical-sizing: auto;
  font-variation-settings: "opsz" 72;
  color: var(--ink);
}
.cover-headline-accent {
  font-style: italic;
  font-weight: 500;
  color: var(--amber);
  font-variation-settings: "opsz" 72;
}

.cover-deck {
  font-family: var(--serif);
  font-size: var(--t-deck);
  line-height: 1.55;
  color: var(--ink-mid);
  max-width: 32rem;
  margin: 0 0 2.4rem;
  font-weight: 400;
}

.cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.6rem;
}

.cover-trust {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
}
.cover-trust li {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: flex;
  align-items: baseline;
  gap: 0.7em;
}
.trust-marker {
  color: var(--amber);
  font-size: 0.85em;
}

/* Cover plate (hero image) */
.cover-plate {
  margin: 0;
  animation: fadeUp 0.9s 0.15s ease-out both;
}
.plate-frame {
  position: relative;
  border: 1px solid var(--ink);
  padding: 8px;
  background: var(--paper-tint);
  box-shadow:
    0 0 0 1px var(--paper) inset,
    0 1px 0 var(--rule);
}
.plate-frame::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid var(--rule);
  pointer-events: none;
}
.plate-frame img {
  width: 100%;
  height: auto;
  display: block;
  filter: contrast(1.02) saturate(0.96);
}

.plate-caption {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding-top: 0.7rem;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: var(--t-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}
.plate-caption .plate-label {
  color: var(--amber);
  font-weight: 500;
  letter-spacing: 0.18em;
}
.plate-caption .plate-title {
  color: var(--ink);
  letter-spacing: 0.08em;
  text-transform: none;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.95rem;
  font-weight: 400;
}
.plate-caption .plate-meta {
  font-size: 0.68rem;
  color: var(--ink-faint);
  text-align: right;
}

.cover-bottom-rule {
  max-width: var(--container);
  margin: clamp(3rem, 6vw, 5rem) auto 0;
  padding: 0 2rem;
  position: relative;
}
.cover-bottom-rule::before,
.cover-bottom-rule::after {
  content: "";
  display: block;
  height: 1px;
  background: var(--rule);
  margin-left: 2rem;
  margin-right: 2rem;
}
.cover-bottom-rule::after {
  margin-top: 2px;
  background: var(--ink);
}

/* ---------- Dossier (Problem statement) --------------------------------- */

.dossier {
  padding: var(--gap-section) 0;
  background: var(--paper-tint);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.dossier-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}

.dossier-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-h2);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0 0 1.8rem;
  color: var(--ink);
  font-variation-settings: "opsz" 72;
}
.dossier-headline em {
  font-style: italic;
  color: var(--amber);
  font-weight: 500;
}

.dossier-body {
  font-family: var(--serif);
  font-size: var(--t-deck);
  line-height: 1.62;
  color: var(--ink-mid);
  max-width: var(--text-col);
  font-weight: 400;
}
.dossier-body p + p { margin-top: 1.2em; }

/* Readout panel */
.readout-panel {
  background: var(--paper-deep);
  border: 1px solid var(--ink);
  padding: 2.2rem 2rem 2rem;
  position: relative;
}
.readout-panel::before {
  content: "";
  position: absolute;
  top: 6px; left: 6px; right: 6px; bottom: 6px;
  border: 1px solid var(--rule);
  pointer-events: none;
}

.readout-header {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--amber);
  margin: 0 0 1.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--rule);
}

.readout {
  display: grid;
  grid-template-columns: minmax(5rem, auto) 1fr;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  padding: 0.75rem 0;
}

.readout-value {
  font-family: var(--mono);
  font-weight: 500;
  display: inline-flex;
  align-items: baseline;
  color: var(--ink);
  line-height: 1;
}
.readout-num {
  font-size: 2.6rem;
  letter-spacing: -0.02em;
}
.readout-unit {
  font-size: 1rem;
  color: var(--amber);
  margin-left: 0.15em;
  letter-spacing: 0.04em;
}

.readout-label {
  font-family: var(--serif);
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--ink-mid);
  margin: 0;
  grid-column: 2;
}
.readout-source {
  grid-column: 1 / -1;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0.6rem 0 0;
}

.readout-rule {
  height: 1px;
  background:
    repeating-linear-gradient(to right,
      var(--rule) 0, var(--rule) 4px,
      transparent 4px, transparent 8px);
  margin: 0.4rem 0;
}

/* ---------- Method (Process) -------------------------------------------- */

.method {
  padding: var(--gap-section) 0;
}
.method-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}
.method-header {
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
  max-width: 38rem;
}
.method-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-h2);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0;
  font-variation-settings: "opsz" 72;
}
.method-headline em {
  font-style: italic;
  color: var(--amber);
  font-weight: 500;
}

.method-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.method-step {
  display: grid;
  grid-template-columns: minmax(8rem, 14rem) 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(2rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--rule);
}
.method-step:last-child { border-bottom: 1px solid var(--rule); }

.step-marker {
  font-family: var(--mono);
  font-weight: 400;
  display: flex;
  align-items: baseline;
  gap: 0.2em;
  line-height: 0.85;
  color: var(--amber);
}
.step-section {
  font-size: 1.6rem;
  font-weight: 300;
}
.step-number {
  font-size: clamp(3.5rem, 7vw, 6rem);
  letter-spacing: -0.04em;
  font-weight: 500;
}

.step-body {
  max-width: var(--text-col);
}

.step-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
  color: var(--ink);
  font-variation-settings: "opsz" 60;
}

.step-deck {
  font-family: var(--serif);
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--ink-mid);
  margin: 0 0 1.7rem;
}

.step-instruments-label {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin: 0 0 0.9rem;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5em;
}
.step-instruments-label::after {
  content: "→";
  font-family: var(--mono);
}

.step-instruments {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--rule);
}
.step-instruments li {
  font-family: var(--serif);
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--ink-mid);
  display: flex;
  align-items: baseline;
  gap: 0.7em;
}
.step-instruments li::before {
  content: "◊";
  color: var(--amber);
  font-size: 0.85em;
  flex-shrink: 0;
}

/* ---------- Cases (Problems We Solve) ----------------------------------- */

.cases {
  padding: var(--gap-section) 0;
  background: var(--paper-tint);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.cases-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}
.cases-header {
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
  max-width: 38rem;
}
.cases-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-h2);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0;
  font-variation-settings: "opsz" 72;
}
.cases-headline em {
  font-style: italic;
  color: var(--amber);
  font-weight: 500;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.case {
  padding: 2rem 1.8rem 2.2rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
  transition: background 0.4s, transform 0.4s;
  background: transparent;
}
.case::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 2.6rem;
  height: 2px;
  background: var(--amber);
  transition: width 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}
.case:hover::before { width: 100%; }
.case:hover { background: var(--paper); }

.case-num {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--amber);
  margin: 0 0 1.2rem;
  font-weight: 500;
}
.case-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.45rem;
  line-height: 1.15;
  letter-spacing: -0.005em;
  margin: 0 0 0.85rem;
  color: var(--ink);
  font-variation-settings: "opsz" 60;
}
.case-body {
  font-family: var(--serif);
  font-size: 0.97rem;
  line-height: 1.55;
  color: var(--ink-mid);
  margin: 0;
}

/* ---------- Plates (Portfolio) ------------------------------------------ */

.plates {
  padding: var(--gap-section) 0;
}
.plates-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}
.plates-header {
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
  max-width: 44rem;
}
.plates-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-h2);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0 0 1.4rem;
  font-variation-settings: "opsz" 72;
}
.plates-headline em {
  font-style: italic;
  color: var(--amber);
  font-weight: 500;
}
.plates-deck {
  font-family: var(--serif);
  font-size: var(--t-deck);
  line-height: 1.6;
  color: var(--ink-mid);
  font-weight: 400;
  max-width: 38rem;
}
.plates-deck em { color: var(--amber); font-style: italic; }

.plates-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem) clamp(1.5rem, 3vw, 2.5rem);
}

.plate {
  display: flex;
  flex-direction: column;
  grid-column: span 6;
}
.plate--lead { grid-column: span 12; }
.plate--lead .plate-figure { aspect-ratio: 16 / 9; }
.plate--lead .plate-meta-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 2rem;
  align-items: start;
}
.plate--lead .plate-name { font-size: clamp(1.8rem, 3vw, 2.4rem); }

.plate-figure {
  margin: 0;
  border: 1px solid var(--ink);
  padding: 6px;
  background: var(--paper-tint);
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.plate-figure::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid var(--rule);
  pointer-events: none;
  z-index: 2;
}
.plate-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.25, 0.1, 0.25, 1), filter 0.7s;
  filter: contrast(1.02) saturate(0.96);
}
.plate:hover .plate-figure img {
  transform: scale(1.04);
  filter: contrast(1.05) saturate(1);
}

.plate-meta-block {
  margin-top: 1.2rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
}
.plate-num {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--amber);
  margin: 0 0 0.7rem;
  font-weight: 500;
}
.plate-loc {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  margin: 0 0 0.45rem;
}
.plate-name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.55rem;
  line-height: 1.1;
  letter-spacing: -0.008em;
  margin: 0 0 0.3rem;
  color: var(--ink);
  font-variation-settings: "opsz" 60;
}
.plate-scope-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--amber);
  margin: 0 0 0.85rem;
  font-weight: 400;
}
.plate-scope {
  font-family: var(--serif);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--ink-mid);
  margin: 0;
}

/* ---------- Colophon (About) -------------------------------------------- */

.colophon {
  padding: var(--gap-section) 0;
  background: var(--paper-tint);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.colophon-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.7fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.colophon-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-h2);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0 0 2rem;
  font-variation-settings: "opsz" 72;
  max-width: 30ch;
}
.colophon-headline em {
  font-style: italic;
  color: var(--amber);
  font-weight: 500;
}

.colophon-body {
  font-family: var(--serif);
  font-size: var(--t-deck);
  line-height: 1.62;
  color: var(--ink-mid);
  max-width: 36rem;
}
.colophon-body p + p { margin-top: 1.1em; }
.colophon-body em {
  font-style: italic;
  color: var(--ink);
}

.dropcap {
  font-family: var(--serif);
  float: left;
  font-size: 4.4rem;
  line-height: 0.85;
  font-weight: 500;
  color: var(--amber);
  padding: 0.3rem 0.65rem 0 0;
  margin-top: 0.05em;
  font-variation-settings: "opsz" 72;
}

.specs {
  border: 1px solid var(--ink);
  padding: 1.7rem 1.6rem 1.5rem;
  background: var(--paper);
  position: relative;
}
.specs::before {
  content: "";
  position: absolute;
  top: 6px; left: 6px; right: 6px; bottom: 6px;
  border: 1px solid var(--rule);
  pointer-events: none;
}
.specs-header {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--amber);
  margin: 0 0 1.3rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
}

.specs-list {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}
.spec {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 0.4rem 1rem;
  padding-bottom: 0.95rem;
  border-bottom: 1px dashed var(--rule);
}
.spec:last-child { border-bottom: none; padding-bottom: 0; }

.spec dt {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  font-weight: 500;
  padding-top: 0.2rem;
}
.spec dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 0.97rem;
  line-height: 1.35;
  color: var(--ink);
  font-weight: 500;
}
.spec dd.spec-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-weight: 400;
  margin-top: 0.15rem;
}

/* ---------- Consultation (CTA / Form) ----------------------------------- */

.consultation {
  background: var(--dark);
  color: var(--dark-paper);
  padding: var(--gap-section) 0;
  position: relative;
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.95  0 0 0 0 0.91  0 0 0 0 0.83  0 0 0 0.05 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 160px 160px;
}

.consultation-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.consultation-eyebrow { color: var(--dark-paper-soft); }
.consultation-eyebrow::before { background: var(--dark-amber); }

.consultation-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--t-h2);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0 0 1.6rem;
  color: var(--dark-paper);
  font-variation-settings: "opsz" 72;
}

.consultation-deck {
  font-family: var(--serif);
  font-size: var(--t-deck);
  line-height: 1.6;
  color: var(--dark-paper-soft);
  margin: 0 0 1.2rem;
  max-width: 32rem;
}
.consultation-deck--accent { color: var(--dark-paper); }
.consultation-deck--accent em {
  font-style: italic;
  color: var(--dark-amber);
}

.consultation-direct {
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(240, 232, 211, 0.18);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.consultation-link {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed rgba(240, 232, 211, 0.18);
  align-items: baseline;
  transition: border-color 0.3s;
}
.consultation-link:last-child { border-bottom: none; }
.consultation-link-label {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--dark-amber);
}
.consultation-link-value {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--dark-paper);
  font-weight: 500;
  font-variation-settings: "opsz" 60;
  transition: color 0.3s;
}
.consultation-link:hover .consultation-link-value { color: var(--dark-amber); }

/* Form */
.consultation-form {
  background: var(--dark-tint);
  border: 1px solid rgba(240, 232, 211, 0.22);
  padding: 2rem 1.85rem 1.85rem;
  position: relative;
}
.consultation-form::before {
  content: "";
  position: absolute;
  top: 6px; left: 6px; right: 6px; bottom: 6px;
  border: 1px solid rgba(240, 232, 211, 0.08);
  pointer-events: none;
}
.form-header {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--dark-amber);
  margin: 0 0 1.4rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(240, 232, 211, 0.18);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
}
.form-row label {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--dark-paper-soft);
  font-weight: 500;
}
.form-row input,
.form-row textarea {
  font-family: var(--serif);
  font-size: 1.02rem;
  line-height: 1.45;
  background: transparent;
  color: var(--dark-paper);
  border: none;
  border-bottom: 1px solid rgba(240, 232, 211, 0.32);
  padding: 0.5rem 0;
  outline: none;
  transition: border-color 0.3s;
  resize: vertical;
}
.form-row input::placeholder,
.form-row textarea::placeholder {
  color: rgba(240, 232, 211, 0.42);
  font-style: italic;
}
.form-row input:focus,
.form-row textarea:focus { border-bottom-color: var(--dark-amber); }

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin-top: 1rem;
  padding: 1rem 1.6rem;
  font-family: var(--mono);
  font-size: var(--t-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--dark);
  background: var(--dark-paper);
  border: 1px solid var(--dark-paper);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  cursor: pointer;
  transition: color 0.4s;
}
.form-submit::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--dark-amber);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: -1;
}
.form-submit:hover {
  color: var(--dark);
  border-color: var(--dark-amber);
}
.form-submit:hover::before { transform: translateX(0); }
.form-submit:hover .btn-arrow { transform: translateX(0.3em); }
.form-submit:disabled { opacity: 0.55; cursor: wait; }

.form-note {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--dark-paper-soft);
  margin: 1rem 0 0;
}

/* ---------- Imprint (Footer) -------------------------------------------- */

.imprint {
  background: var(--paper);
  border-top: 1px solid var(--rule);
  padding: clamp(3rem, 5vw, 4.5rem) 0 0;
}
.imprint-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: start;
}
.imprint-block p {
  margin: 0 0 0.4em;
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--ink-mid);
  line-height: 1.5;
}
.imprint-block a:hover { color: var(--amber); }

.imprint-logo {
  width: 100%;
  max-width: 14rem;
  height: auto;
  margin: 0 0 1rem;
  display: block;
}
.imprint-mark .imprint-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin: 0 0 0.7rem;
}
.imprint-mark .imprint-loc {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.imprint-label {
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin: 0 0 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}

.imprint-bottom {
  max-width: var(--container);
  margin: clamp(2.5rem, 4vw, 3.5rem) auto 0;
  padding: 1.4rem 2rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
}
.imprint-bottom p { margin: 0; font-family: var(--mono); font-size: var(--t-mono-sm); color: var(--ink-faint); }
.imprint-colophon { font-style: italic; text-transform: none; letter-spacing: 0.08em; }

/* ---------- Animations -------------------------------------------------- */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive -------------------------------------------------- */

@media (max-width: 980px) {
  .cover-inner,
  .dossier-inner,
  .colophon-inner,
  .consultation-inner {
    grid-template-columns: 1fr;
  }
  .cover-plate { margin-top: 1rem; }
  .plate--lead .plate-meta-block { grid-template-columns: 1fr; gap: 0.5rem; }
  .imprint-inner { grid-template-columns: 1fr 1fr; }
  .method-step { grid-template-columns: 1fr; gap: 0.6rem; }
  .step-marker { gap: 0.35em; }
  .step-number { font-size: clamp(3rem, 9vw, 4.5rem); }
}

@media (max-width: 760px) {
  .folio-inner { padding: 0.55rem 1.25rem; gap: 0.85rem 1.4rem; }
  .folio-tag, .folio-license { display: none; }

  .masthead-inner {
    padding: 0.85rem 1.25rem;
    flex-wrap: wrap;
  }
  .masthead-toggle { display: flex; }
  .masthead-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
    padding-top: 1rem;
    margin-top: 0.85rem;
    border-top: 1px solid var(--rule);
  }
  .masthead-nav.is-open { display: flex; }
  .masthead-link {
    padding: 0.85rem 0;
    font-size: 0.78rem;
    border-bottom: 1px dashed var(--rule);
  }
  .masthead-phone {
    border-left: none;
    border-bottom: 1px dashed var(--rule);
    padding: 0.85rem 0;
  }
  .masthead-cta {
    text-align: center;
    margin-top: 0.5rem;
  }

  .cover { padding: 2.5rem 0 3rem; }
  .cover-inner { padding: 0 1.25rem; }
  .cover-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; text-align: center; }
  .btn-ghost { align-items: center; }

  .dossier-inner,
  .method-inner,
  .cases-inner,
  .plates-inner,
  .colophon-inner,
  .consultation-inner,
  .imprint-inner {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .readout-panel { padding: 1.5rem 1.25rem 1.3rem; }
  .readout { grid-template-columns: 1fr; gap: 0.4rem; }
  .readout-label { grid-column: 1; }
  .readout-num { font-size: 2.2rem; }

  .plates-grid { grid-template-columns: 1fr; }
  .plate, .plate--lead { grid-column: span 1; }
  .plate--lead .plate-figure { aspect-ratio: 4 / 3; }

  .imprint-inner { grid-template-columns: 1fr; gap: 1.6rem; }
  .imprint-bottom { padding: 1.4rem 1.25rem; flex-direction: column; align-items: flex-start; gap: 0.5rem; }

  .dropcap { font-size: 3.4rem; padding-right: 0.5rem; }

  .consultation-link { grid-template-columns: 1fr; gap: 0.25rem; padding: 0.6rem 0; }
  .consultation-link-value { font-size: 1.1rem; }
}

@media (max-width: 520px) {
  .folio-est { display: none; }
  .masthead-tagline { display: none; }
  .cases-grid { grid-template-columns: 1fr; }
}

/* ---------- Print ------------------------------------------------------- */

@media print {
  .masthead, .folio, .consultation-form, .cover-actions, .masthead-toggle { display: none; }
  body { background: white; color: black; }
}