/*
 * HERMES COMPANION — MONOCHROME EDITORIAL DESIGN SYSTEM
 * Inspired by experimental research institutions, archival scientific publications,
 * classical mythology, and early computer interfaces.
 */

@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:ital,opsz,wght@0,6..96,300..600;1,6..96,300..600&family=JetBrains+Mono:wght@400;500;600&family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* Strict Monochrome Light Palette (Warm Paper & Ink) */
  --paper: #F7F7F3;
  --ink: #080808;
  --secondary-ink: #6A6A64;
  --surface: #EEEEEA;
  --surface-subtle: #F2F2EE;
  --surface-contrast: #080808;
  --surface-contrast-text: #F7F7F3;
  --hairline: rgba(8, 8, 8, 0.22);
  --hairline-faint: rgba(8, 8, 8, 0.12);
  --hairline-strong: rgba(8, 8, 8, 0.85);
  --shadow-offset: 3px 3px 0px #080808;
  --cut-size: 14px;

  /* Typography Stacks */
  --font-display: "Bodoni 72", "Bodoni 72 Oldstyle", "Didot", "Bodoni Moda", "Playfair Display", "Times New Roman", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "Aeonik Fono", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;

  /* Spacing Scale */
  --space-2: 2px;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-96: 96px;

  /* Animation */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Automatic Dark Mode Palette (Inverts when system is in Dark Mode) */
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #080808;
    --ink: #F7F7F3;
    --secondary-ink: #9E9E98;
    --surface: #141413;
    --surface-subtle: #1A1A18;
    --surface-contrast: #F7F7F3;
    --surface-contrast-text: #080808;
    --hairline: rgba(247, 247, 243, 0.22);
    --hairline-faint: rgba(247, 247, 243, 0.12);
    --hairline-strong: rgba(247, 247, 243, 0.85);
    --shadow-offset: 3px 3px 0px #F7F7F3;
  }
}

/* Base Reset & Document Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--paper);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Selection */
::selection {
  background: var(--ink);
  color: var(--paper);
}

/* Editorial Rules & Hairlines */
hr, .editorial-rule {
  border: none;
  height: 1px;
  background-color: var(--hairline);
  margin: 0;
}

.editorial-rule.strong {
  height: 2px;
  background-color: var(--ink);
}

.editorial-rule.faint {
  height: 1px;
  background-color: var(--hairline-faint);
}

/* Master Layout Frame */
.page-container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-24);
}

@media (min-width: 768px) {
  .page-container {
    padding: 0 var(--space-32);
  }
}

/* Top Institutional Header */
.archival-topbar {
  border-bottom: 1px solid var(--hairline);
  background-color: var(--paper);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8) 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary-ink);
  border-bottom: 1px solid var(--hairline-faint);
}

.topbar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-16) 0;
  gap: var(--space-16);
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  text-decoration: none;
  color: var(--ink);
}

.brand-icon-box {
  width: 32px;
  height: 32px;
  border: 1px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  overflow: hidden;
}

.brand-icon-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(120%);
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  letter-spacing: -0.01em;
  font-weight: 400;
  line-height: 1;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border: 1px solid var(--hairline);
  padding: 2px 6px;
  color: var(--secondary-ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-24);
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--secondary-ink);
  transition: color var(--transition-fast);
  position: relative;
  padding: var(--space-4) 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--ink);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--ink);
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.theme-toggle-btn:hover {
  background-color: var(--ink);
  color: var(--paper);
}

/* Typography Classes */
.editorial-display-huge {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6.5vw, 4.75rem);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-16);
}

.editorial-display-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-12);
}

.editorial-section-title {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3vw, 2.125rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.editorial-lead {
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  font-weight: 400;
  line-height: 1.6;
  color: var(--secondary-ink);
  max-width: 68ch;
}

.editorial-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
}

.editorial-body p + p {
  margin-top: var(--space-16);
}

.editorial-utility {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary-ink);
}

.editorial-utility-small {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Module Section Header */
.module-header {
  margin-bottom: var(--space-32);
}

.module-header-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--ink);
  margin-bottom: var(--space-16);
}

.module-index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.module-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--secondary-ink);
  text-transform: uppercase;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1;
}

.btn-primary {
  background-color: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
}

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

.btn-secondary {
  background-color: var(--paper);
  color: var(--ink);
  border: 1px solid var(--ink);
}

.btn-secondary:hover {
  background-color: var(--ink);
  color: var(--paper);
}

.btn-ghost {
  background-color: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.btn-ghost:hover {
  border-color: var(--ink);
}

/* Status Tokens & Badges */
.token {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 8px;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  border-radius: 2px;
  white-space: nowrap;
}

.token.inverted {
  background: var(--ink);
  color: var(--paper);
}

.token.faint {
  border-color: var(--hairline);
  color: var(--secondary-ink);
}

/* Cut-corner Chamfer */
.cut-corner {
  clip-path: polygon(0 0, calc(100% - var(--cut-size)) 0, 100% var(--cut-size), 100% 100%, 0 100%);
  position: relative;
}

/* Hero Section */
.hero-section {
  padding: var(--space-64) 0 var(--space-48);
  border-bottom: 2px solid var(--ink);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-48);
  align-items: start;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.hero-meta-kicker {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
  margin-top: var(--space-32);
}

.hero-art-container {
  border: 1px solid var(--ink);
  background: var(--surface);
  padding: var(--space-16);
  position: relative;
}

.hero-art-image-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hairline-strong);
  overflow: hidden;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-art-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(125%) grayscale(100%);
  transition: transform 0.4s ease;
}

.hero-art-image-wrapper:hover img {
  transform: scale(1.02);
}

.hero-art-caption {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary-ink);
  margin-top: var(--space-12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-8);
}

/* Institutional Spec Table */
.spec-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background-color: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: var(--space-48);
}

@media (min-width: 768px) {
  .spec-strip {
    grid-template-columns: repeat(4, 1fr);
  }
}

.spec-cell {
  background-color: var(--paper);
  padding: var(--space-16);
}

.spec-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary-ink);
  margin-bottom: var(--space-4);
}

.spec-val {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
  line-height: 1.1;
}

.spec-desc {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--secondary-ink);
  margin-top: var(--space-4);
}

/* Editorial Sections */
.editorial-section {
  padding: var(--space-64) 0;
  border-bottom: 1px solid var(--hairline);
}

.editorial-section.last-section {
  border-bottom: none;
}

/* Inverted Section */
.editorial-section.inverted {
  background-color: var(--surface-contrast);
  color: var(--surface-contrast-text);
  border-bottom: none;
  margin: var(--space-48) 0;
  border-top: 2px solid var(--hairline);
  border-bottom: 2px solid var(--hairline);
}

.editorial-section.inverted .module-header-meta {
  border-bottom-color: var(--surface-contrast-text);
}

.editorial-section.inverted .module-index,
.editorial-section.inverted .editorial-section-title,
.editorial-section.inverted .spec-val {
  color: var(--surface-contrast-text);
}

.editorial-section.inverted .editorial-lead,
.editorial-section.inverted .module-tag,
.editorial-section.inverted .spec-label,
.editorial-section.inverted .spec-desc {
  color: rgba(247, 247, 243, 0.7);
}

.editorial-section.inverted .editorial-rule {
  background-color: rgba(247, 247, 243, 0.2);
}

/* Architecture Flow Diagram */
.diagram-box {
  border: 1px solid var(--ink);
  background-color: var(--surface);
  padding: var(--space-24);
  margin: var(--space-32) 0;
}

.diagram-flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

@media (min-width: 820px) {
  .diagram-flow {
    flex-direction: row;
    align-items: stretch;
  }
}

.diagram-node {
  flex: 1;
  border: 1px solid var(--hairline-strong);
  background: var(--paper);
  padding: var(--space-16);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.diagram-node-idx {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  color: var(--secondary-ink);
  margin-bottom: var(--space-8);
}

.diagram-node-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  margin-bottom: var(--space-8);
  font-weight: 500;
}

.diagram-node-desc {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--secondary-ink);
  line-height: 1.5;
}

.diagram-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--secondary-ink);
  padding: var(--space-8);
}

/* Editorial Cards Grid */
.cards-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
  margin-top: var(--space-24);
}

@media (min-width: 768px) {
  .cards-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.cards-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
  margin-top: var(--space-24);
}

@media (min-width: 768px) {
  .cards-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.editorial-card {
  border: 1px solid var(--hairline-strong);
  background-color: var(--surface);
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.editorial-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-12);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: var(--space-8);
}

.editorial-card-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  margin-bottom: var(--space-8);
  line-height: 1.15;
}

.editorial-card-body {
  font-size: 0.9375rem;
  color: var(--secondary-ink);
  line-height: 1.6;
}

/* Editorial Comparison Table */
.editorial-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--hairline-strong);
  margin: var(--space-24) 0;
}

.editorial-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.editorial-table th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary-ink);
  background-color: var(--surface);
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--ink);
  font-weight: 600;
}

.editorial-table td {
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}

.editorial-table tr:last-child td {
  border-bottom: none;
}

.editorial-table tr:hover td {
  background-color: var(--surface-subtle);
}

.table-key {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
}

/* Terminal / Code Box */
.terminal-block {
  border: 1px solid var(--ink);
  background-color: var(--surface);
  margin: var(--space-16) 0;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8) var(--space-16);
  border-bottom: 1px solid var(--hairline-strong);
  background: var(--paper);
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary-ink);
}

.terminal-copy-btn {
  background: transparent;
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.terminal-copy-btn:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.terminal-content {
  padding: var(--space-16);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.55;
  overflow-x: auto;
  color: var(--ink);
  background: var(--paper);
}

.terminal-content pre {
  margin: 0;
  white-space: pre;
}

.cli-prompt {
  color: var(--secondary-ink);
  user-select: none;
}

.cli-comment {
  color: var(--secondary-ink);
  font-style: italic;
}

/* App Presentation Banner */
.app-feature-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
  align-items: center;
  margin-top: var(--space-32);
}

@media (min-width: 820px) {
  .app-feature-row {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

.app-icon-frame {
  border: 2px solid var(--ink);
  padding: var(--space-16);
  background: var(--paper);
  box-shadow: var(--shadow-offset);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.app-icon-frame img {
  width: 180px;
  height: 180px;
  border-radius: 4px;
  border: 1px solid var(--hairline-strong);
  margin-bottom: var(--space-16);
}

/* FAQ / Accordion for Support */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  margin-top: var(--space-24);
}

.faq-item {
  border: 1px solid var(--hairline-strong);
  background-color: var(--surface);
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--ink);
}

.faq-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-16) var(--space-20);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 500;
  color: var(--ink);
}

.faq-symbol {
  font-family: var(--font-mono);
  font-size: 1rem;
  margin-left: var(--space-16);
  color: var(--secondary-ink);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-symbol {
  transform: rotate(45deg);
  color: var(--ink);
}

.faq-content {
  display: none;
  padding: 0 var(--space-20) var(--space-20);
  font-size: 0.9375rem;
  color: var(--secondary-ink);
  line-height: 1.65;
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-16);
}

.faq-item.active .faq-content {
  display: block;
}

/* Support Interactive Diagnostics Tool */
.diag-panel {
  border: 2px solid var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-offset);
  margin-top: var(--space-32);
}

.diag-header {
  background: var(--ink);
  color: var(--paper);
  padding: var(--space-12) var(--space-20);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.diag-tabs {
  display: flex;
  border-bottom: 1px solid var(--hairline-strong);
  background: var(--surface);
  overflow-x: auto;
}

.diag-tab {
  background: transparent;
  border: none;
  border-right: 1px solid var(--hairline);
  padding: var(--space-12) var(--space-16);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary-ink);
  cursor: pointer;
  white-space: nowrap;
}

.diag-tab.active {
  background: var(--paper);
  color: var(--ink);
  font-weight: 600;
  border-bottom: 2px solid var(--ink);
  margin-bottom: -1px;
}

.diag-body {
  padding: var(--space-24);
}

/* Contact / Inquiries Box */
.inquiry-box {
  border: 1px solid var(--ink);
  padding: var(--space-32);
  background: var(--surface);
  margin-top: var(--space-32);
}

.form-field {
  margin-bottom: var(--space-16);
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary-ink);
  margin-bottom: var(--space-6);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--paper);
  border: 1px solid var(--hairline-strong);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--ink);
  border-radius: 2px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--ink);
}

/* Institutional Footer */
.archival-footer {
  margin-top: auto;
  border-top: 2px solid var(--ink);
  background: var(--paper);
  padding: var(--space-48) 0 var(--space-32);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
  margin-bottom: var(--space-48);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--secondary-ink);
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--hairline);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--ink);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-stamp {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--secondary-ink);
  text-transform: uppercase;
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-16);
}

@media (min-width: 768px) {
  .footer-stamp {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ==========================================================================
   iPhone Device Mockup & Editorial Showcase
   ========================================================================== */

.support-checklist-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-32);
}

@media (min-width: 860px) {
  .support-checklist-grid {
    grid-template-columns: 1.25fr 0.75fr !important;
  }
}

.iphone-showcase-section {
  margin-top: var(--space-48);
}

.iphone-triptych-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-48);
  margin-top: var(--space-32);
}

@media (min-width: 768px) {
  .iphone-triptych-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1040px) {
  .iphone-triptych-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-32);
  }
}

.iphone-card-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* iPhone Chassis with Hardware Bezels */
.iphone-device {
  position: relative;
  width: 100%;
  max-width: 290px;
  aspect-ratio: 472 / 1024;
  background-color: var(--ink);
  border-radius: 44px;
  padding: 10px;
  box-shadow: 4px 6px 0px var(--hairline-strong);
  border: 1px solid var(--hairline-strong);
  margin: 0 auto;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.iphone-device:hover {
  transform: translateY(-4px);
  box-shadow: 6px 10px 0px var(--ink);
}

/* Physical Hardware Buttons (Volume & Power) */
.iphone-device::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 92px;
  width: 3px;
  height: 48px;
  background-color: var(--ink);
  border-radius: 2px 0 0 2px;
  box-shadow: 0 64px 0 var(--ink), 0 -24px 0 var(--ink); /* Volume down & Action button */
}

.iphone-device::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 110px;
  width: 3px;
  height: 60px;
  background-color: var(--ink);
  border-radius: 0 2px 2px 0; /* Side Power button */
}

/* Dynamic Island Pill */
.iphone-island {
  position: absolute;
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
  width: 76px;
  height: 20px;
  background-color: #000000;
  border-radius: 12px;
  z-index: 20;
  pointer-events: none;
  box-shadow: 0 0 1px rgba(255, 255, 255, 0.25);
}

/* Sensor dot inside Island */
.iphone-island::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 6px;
  width: 8px;
  height: 8px;
  background-color: #0d0d0d;
  border-radius: 50%;
  border: 0.5px solid rgba(255, 255, 255, 0.15);
}

/* Screen Wrapper */
.iphone-screen {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 34px;
  overflow: hidden;
  background-color: #F7F7F3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.iphone-screen img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}

/* Screen Bottom Home Indicator Bar */
.iphone-home-bar {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 96px;
  height: 4px;
  background-color: rgba(8, 8, 8, 0.4);
  border-radius: 3px;
  z-index: 10;
  pointer-events: none;
}

@media (prefers-color-scheme: dark) {
  .iphone-home-bar {
    background-color: rgba(247, 247, 243, 0.5);
  }
}

/* Editorial Spec Plate Below Device */
.iphone-plate {
  width: 100%;
  max-width: 290px;
  margin-top: var(--space-16);
  border: 1px solid var(--hairline-strong);
  background-color: var(--surface);
  padding: var(--space-12) var(--space-16);
  text-align: left;
}

.iphone-plate-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: var(--space-4);
}

.iphone-plate-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.2;
}

.iphone-plate-desc {
  font-size: 0.8125rem;
  color: var(--secondary-ink);
  line-height: 1.45;
  margin-top: var(--space-6);
}

/* Responsive adjustments */
@media (max-width: 767px) {
  .topbar-nav {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links {
    flex-wrap: wrap;
    gap: var(--space-12);
  }
  .hero-section {
    padding: var(--space-32) 0;
  }
}