/* ============================================
   CipherIQ — style.css
   Single-file, zero-dependency stylesheet
   ============================================ */

:root {
  --brand: #3B82B6;
  --brand-dark: #2D6A94;
  --brand-light: #e8f1f8;
  --dark: #1a1a2e;
  --text: #333;
  --text-light: #666;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --border: #e5e7eb;
  --radius: 8px;
  --radius-lg: 12px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code, pre, .mono {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--brand-dark);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  color: var(--dark);
  font-weight: 600;
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================
   Navigation
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links li a {
  display: block;
  padding: 0.5rem 0.875rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}

.nav-links li a:hover {
  color: var(--brand);
  background: var(--bg-alt);
}

.external-icon {
  font-size: 0.75rem;
  opacity: 0.5;
  margin-left: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform 0.2s;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.btn-primary:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--brand);
  border-color: var(--brand);
}

.btn-outline:hover {
  background: var(--brand);
  color: #fff;
}

/* ============================================
   Sections
   ============================================ */
.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-dark {
  background: var(--dark);
  color: #fff;
}

.section-dark h2,
.section-dark h3 {
  color: #fff;
}

.section-dark p {
  color: rgba(255, 255, 255, 0.8);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  padding: 6rem 0 4rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--dark);
}

.hero-sub {
  font-size: 1.35rem;
  color: var(--text-light);
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Trust Bar
   ============================================ */
.trust-bar {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.trust-items {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

.trust-items a {
  color: var(--text-light);
  font-weight: 500;
}

.trust-items a:hover {
  color: var(--brand);
}

.trust-dot {
  opacity: 0.4;
}

/* ============================================
   Grids
   ============================================ */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ============================================
   Problem Cards
   ============================================ */
.problem-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.problem-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--brand);
}

.problem-vs {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
  margin: 0.5rem 0;
}

.problem-card p:last-child {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ============================================
   Step Cards (How it Works)
   ============================================ */
.step-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.section-dark .step-card {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.step-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.step-label {
  font-size: 0.85rem;
  color: var(--brand);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.step-card p:last-child {
  font-size: 0.95rem;
  color: var(--text-light);
}

.step-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--brand);
  font-weight: 300;
}

/* Adjust grid for step arrows */
.section-alt .grid-3,
.section-dark .grid-3 {
  grid-template-columns: 1fr auto 1fr auto 1fr;
}

/* ============================================
   Differentiator Cards
   ============================================ */
.diff-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
}

.diff-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.diff-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.diff-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ============================================
   Use Case Cards
   ============================================ */
.usecase-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
}

.usecase-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--brand-dark);
}

.usecase-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.usecase-tags {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-light);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.timeline-item {
  text-align: center;
  padding: 0 1.5rem;
}

.timeline-year {
  font-size: 2rem;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 0.5rem;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
}

.timeline-desc {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.4;
}

.timeline-connector {
  width: 60px;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

/* ============================================
   Comparison (Open Source vs Commercial)
   ============================================ */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.comparison-col {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  background: var(--bg);
}

.comparison-col-featured {
  border-color: var(--brand);
  box-shadow: 0 4px 24px rgba(59, 130, 182, 0.12);
  position: relative;
}

.comparison-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.comparison-header h3 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.comparison-price {
  font-size: 0.95rem;
  color: var(--text-light);
  font-weight: 500;
}

.comparison-col ul {
  margin-bottom: 1.5rem;
}

.comparison-col ul li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9rem;
  color: var(--text);
}

.comparison-col ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 600;
}

.comparison-col .btn {
  width: 100%;
}

/* ============================================
   CTA Final
   ============================================ */
.cta-final {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-final h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta-final p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 2rem;
}

/* ============================================
   Page Hero (inner pages)
   ============================================ */
.page-hero {
  padding: 4rem 0 3rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-hero .hero-sub {
  font-size: 1.15rem;
}

.page-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand);
  margin-bottom: 1rem;
}

/* ============================================
   Product Page — Tool Cards
   ============================================ */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.tool-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  background: var(--bg);
  transition: box-shadow 0.2s;
}

.tool-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.tool-header {
  margin-bottom: 1rem;
}

.tool-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand);
  background: var(--brand-light);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.tool-card h3 {
  font-size: 1.25rem;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  color: var(--dark);
}

.tool-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.tool-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.tool-features span {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-alt);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.tool-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand);
}

.tool-link:hover {
  color: var(--brand-dark);
}

/* ============================================
   Architecture Diagram
   ============================================ */
.arch-diagram {
  margin: 2rem 0;
  overflow-x: auto;
}

.arch-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-width: 700px;
}

.arch-box {
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  flex: 1;
  max-width: 260px;
}

.arch-endpoint {
  background: var(--brand-light);
  border: 2px solid var(--brand);
}

.arch-collector {
  background: var(--dark);
  color: #fff;
  border: 2px solid var(--dark);
}

.arch-collector h4,
.arch-collector p {
  color: #fff;
}

.arch-ui {
  background: var(--bg-alt);
  border: 2px solid var(--border);
}

.arch-box h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.arch-box p {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.arch-collector p {
  color: rgba(255, 255, 255, 0.7);
}

.arch-sub {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.arch-sub span {
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.arch-endpoint .arch-sub span {
  background: rgba(59, 130, 182, 0.15);
  color: var(--brand-dark);
}

.arch-ui .arch-sub span {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.arch-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  flex-shrink: 0;
  padding: 0 0.5rem;
}

.arch-arrow::before {
  content: "→";
  font-size: 1.25rem;
  color: var(--brand);
  font-weight: 300;
}

.arch-arrow span {
  font-size: 0.65rem;
  color: var(--text-light);
  white-space: nowrap;
}

/* ============================================
   Feature Cards
   ============================================ */
.feature-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
  width: 100%;
  min-width: 0;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ============================================
   Highlight Box
   ============================================ */
.highlight-box {
  background: var(--brand-light);
  border: 1px solid rgba(59, 130, 182, 0.2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 3rem;
}

.highlight-box h3 {
  font-size: 1.15rem;
  color: var(--brand-dark);
  margin-bottom: 0.5rem;
}

.highlight-box p {
  font-size: 0.95rem;
  color: var(--text);
}

/* ============================================
   Whitepaper Page
   ============================================ */
.whitepaper-author {
  font-size: 1rem;
  color: var(--text-light);
  margin-top: 0.5rem;
}

.whitepaper-content {
  max-width: 900px;
  margin: 0 auto;
}

.whitepaper-abstract {
  margin-bottom: 3rem;
}

.whitepaper-abstract h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.whitepaper-abstract p {
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.whitepaper-sections {
  margin-bottom: 3rem;
}

.whitepaper-sections h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.wp-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.wp-section-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.wp-section-num {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--brand);
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  margin-bottom: 0.5rem;
}

.wp-section-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.wp-section-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

.whitepaper-arch {
  margin: 3rem 0;
}

.whitepaper-arch h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.whitepaper-arch .grid-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.whitepaper-cta {
  text-align: center;
  padding: 3rem 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
}

.whitepaper-cta h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.whitepaper-cta p {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 4rem;
  max-width: 900px;
  margin: 0 auto;
}

.contact-info h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.contact-item {
  margin-bottom: 1.5rem;
}

.contact-item h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 0.25rem;
}

.contact-item a {
  font-size: 1rem;
  font-weight: 500;
}

.contact-company {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.contact-company p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.contact-form-wrap h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.7rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.2s;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(59, 130, 182, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn {
  align-self: flex-start;
  border: none;
  font-family: inherit;
}

.required {
  color: #e53e3e;
  font-weight: 600;
}

.form-error {
  display: none;
  color: #e53e3e;
  font-size: 0.82rem;
  margin-top: 0.3rem;
  line-height: 1.4;
}

.form-group input.input-error,
.form-group textarea.input-error {
  border-color: #e53e3e;
  box-shadow: 0 0 0 2px rgba(229, 62, 62, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #a0aec0;
  font-style: italic;
}

.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 2rem;
  min-height: 300px;
}

.form-success .success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 2rem;
  line-height: 64px;
  text-align: center;
  margin-bottom: 1.5rem;
}

.form-success h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--dark);
}

.form-success p {
  color: var(--text-light);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.form-success .btn {
  border: none;
  font-family: inherit;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand img {
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.5);
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.footer-col ul li {
  margin-bottom: 0.4rem;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   Mobile Responsive (768px)
   ============================================ */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    padding: 0.75rem 1rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-sub {
    font-size: 1.15rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .section {
    padding: 3rem 0;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .step-arrow {
    display: none;
  }

  .section-alt .grid-3,
  .section-dark .grid-3 {
    grid-template-columns: 1fr;
  }

  .comparison {
    grid-template-columns: 1fr;
  }

  .tool-grid {
    grid-template-columns: 1fr;
  }

  .arch-row {
    flex-direction: column;
    min-width: 0;
  }

  .arch-box {
    max-width: 100%;
    width: 100%;
  }

  .arch-arrow {
    padding: 0.5rem 0;
  }

  .arch-arrow::before {
    content: "↓";
  }

  .wp-section-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .page-hero h1 {
    font-size: 1.75rem;
  }

  .timeline {
    flex-direction: column;
    gap: 0;
  }

  .timeline-item {
    padding: 1.5rem 0;
  }

  .timeline-connector {
    width: 2px;
    height: 30px;
  }
}