/* ============================================================
   LPT Studio — Design system
   Palette:  paper #F7F7F3 · ink #15181C · accent #0E6B54
   Type:     Space Grotesk (display) / IBM Plex Sans (body) / IBM Plex Mono (labels)
   ============================================================ */

:root {
  --paper: #F7F7F3;
  --surface: #FFFFFF;
  --surface-sunken: #EFEEE8;
  --ink: #15181C;
  --ink-soft: #4B5157;
  --ink-faint: #8A8F94;
  --line: #E1E1DB;
  --line-strong: #CFCFC7;
  --accent: #0E6B54;
  --accent-strong: #0A5443;
  --accent-tint: #E4F0EA;
  --accent-tint-strong: #CFE6DC;
  --on-accent: #F7FBF9;

  --font-display: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;

  --container: 1180px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(21, 24, 28, 0.06);
  --shadow-md: 0 8px 24px rgba(21, 24, 28, 0.08);
  --shadow-lg: 0 24px 64px rgba(21, 24, 28, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; cursor: pointer; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: var(--accent-strong); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-accent {
  background: var(--accent);
  color: var(--on-accent);
}
.btn-accent:hover { background: var(--accent-strong); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

.btn-arrow { transition: transform 0.25s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 247, 243, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  flex: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-cta { display: flex; align-items: center; gap: 18px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px 0 24px;
  border-top: 1px solid var(--line);
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  padding: 14px 4px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}
.mobile-menu .btn { margin-top: 16px; width: 100%; }

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

.hero {
  padding: 90px 0 110px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 4.6vw, 3.9rem);
  margin: 20px 0 22px;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent-strong);
  position: relative;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 34px;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-proof {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
}
.hero-proof span { display: flex; align-items: center; gap: 8px; }
.hero-proof span::before {
  content: '';
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--line-strong);
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero { padding: 50px 0 60px; }
}

/* ---------- Signature: sketch-to-product build sequence ---------- */

.build-demo {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 460px;
  margin-left: auto;
}

.build-stage {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.build-sketch, .build-final {
  position: absolute;
  inset: 0;
  padding: 28px;
  transition: opacity 1.1s var(--ease), filter 1.1s var(--ease);
}

.build-sketch {
  opacity: 1;
}
.build-sketch svg { width: 100%; height: 100%; }

.build-final {
  opacity: 0;
  filter: blur(2px);
}

.build-demo.is-built .build-sketch {
  opacity: 0;
  filter: blur(3px);
}
.build-demo.is-built .build-final {
  opacity: 1;
  filter: blur(0);
}

.build-final-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.bf-nav { display: flex; gap: 6px; margin-bottom: 6px; }
.bf-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.bf-bar-title { height: 16px; width: 55%; border-radius: 5px; background: var(--ink); }
.bf-bar-sub { height: 10px; width: 78%; border-radius: 5px; background: var(--line); margin-top: 8px; }
.bf-tile { border-radius: var(--radius-sm); background: var(--surface-sunken); flex: 1; padding: 14px; display: flex; flex-direction: column; justify-content: flex-end; gap: 6px; }
.bf-tile.accent { background: var(--accent); }
.bf-tile .bf-chip { height: 8px; width: 60%; border-radius: 4px; background: var(--line-strong); }
.bf-tile.accent .bf-chip { background: rgba(255,255,255,0.55); }
.bf-row { display: flex; gap: 12px; flex: 1; }
.bf-btn { align-self: flex-start; margin-top: auto; background: var(--accent); color: var(--on-accent); font-family: var(--font-mono); font-size: 0.7rem; padding: 8px 14px; border-radius: 999px; }
.bf-status { margin-top: auto; display: flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-faint); }
.bf-status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; }

.build-caption {
  position: absolute;
  left: 20px;
  bottom: -34px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 8px;
}
.build-caption .cursor-blink {
  width: 8px; height: 15px; background: var(--accent);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Sections ---------- */

section { padding: 92px 0; }
.section-tight { padding: 64px 0; }

.section-head {
  max-width: 640px;
  margin-bottom: 52px;
}
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-top: 14px;
}
.section-head p {
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-top: 14px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.section-alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Service cards ---------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.services-grid-2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 820px;
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.service-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-tint);
  color: var(--accent-strong);
  display: flex; align-items: center; justify-content: center;
}
.service-icon svg { width: 22px; height: 22px; }

.service-card h3 { font-size: 1.25rem; }
.service-card p { color: var(--ink-soft); font-size: 0.98rem; }

.service-list { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.service-list li {
  font-size: 0.9rem;
  color: var(--ink-soft);
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.service-list li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
  transform: translateY(-2px);
}

.service-link {
  margin-top: auto;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--accent-strong);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.service-link svg { width: 15px; height: 15px; transition: transform 0.25s var(--ease); }
.service-card:hover .service-link svg { transform: translateX(3px); }

@media (max-width: 900px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* ---------- Portfolio rows ---------- */

.work-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}
.work-row:last-child { border-bottom: none; }
.work-row.reverse .work-visual { order: 2; }
.work-row.reverse .work-copy { order: 1; }

.work-visual {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.work-visual .visual-icon-img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 22%;
  box-shadow: var(--shadow-md);
}

.work-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
  background: var(--accent-tint);
  padding: 5px 11px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 16px;
}

.work-copy h3 { font-size: 1.7rem; margin-bottom: 14px; }
.work-copy p { color: var(--ink-soft); margin-bottom: 10px; }
.work-copy .work-meta {
  display: flex; gap: 18px; flex-wrap: wrap;
  margin: 18px 0 22px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}
.work-copy .work-link {
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}
.work-copy .work-link svg { width: 14px; height: 14px; transition: transform 0.25s var(--ease); }
.work-copy .work-link:hover svg { transform: translateX(3px); }

@media (max-width: 860px) {
  .work-row, .work-row.reverse { grid-template-columns: 1fr; gap: 26px; }
  .work-row.reverse .work-visual, .work-row.reverse .work-copy { order: initial; }
}

/* ---------- Benefits ---------- */

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.benefit { display: flex; flex-direction: column; gap: 10px; }
.benefit-num { font-family: var(--font-mono); color: var(--accent); font-size: 0.85rem; }
.benefit h4 { font-size: 1.05rem; }
.benefit p { color: var(--ink-soft); font-size: 0.92rem; }

@media (max-width: 900px) {
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .benefits-grid { grid-template-columns: 1fr; }
}

/* ---------- About teaser / general two-col ---------- */

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 32px; }
}

.avatar-card {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-points { display: flex; flex-direction: column; gap: 22px; margin-top: 26px; }
.about-point { display: flex; gap: 16px; }
.about-point-icon {
  width: 34px; height: 34px; flex: none;
  border-radius: 9px;
  background: var(--accent-tint);
  color: var(--accent-strong);
  display: flex; align-items: center; justify-content: center;
}
.about-point-icon svg { width: 17px; height: 17px; }
.about-point h4 { font-size: 1rem; margin-bottom: 4px; }
.about-point p { color: var(--ink-soft); font-size: 0.92rem; }

/* ---------- Final CTA band ---------- */

.cta-band {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-lg);
  padding: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); max-width: 22ch; }
.cta-band p { color: rgba(247,247,243,0.65); margin-top: 10px; }
.cta-band .btn-primary { background: var(--accent); color: var(--on-accent); }
.cta-band .btn-primary:hover { background: #12876a; }
.cta-band .btn-ghost { border-color: rgba(247,247,243,0.3); color: var(--paper); }
.cta-band .btn-ghost:hover { border-color: var(--paper); }

@media (max-width: 640px) {
  .cta-band { padding: 40px 28px; flex-direction: column; align-items: flex-start; }
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 36px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.footer-brand p {
  color: var(--ink-soft);
  max-width: 34ch;
  margin-top: 12px;
  font-size: 0.92rem;
}
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col a { font-size: 0.92rem; color: var(--ink-soft); transition: color 0.2s; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-faint);
}

/* ---------- Reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Page hero (inner pages) ---------- */

.page-hero {
  padding: 64px 0 56px;
}
.page-hero h1 { font-size: clamp(2.1rem, 4vw, 3rem); margin-top: 16px; max-width: 20ch; }
.page-hero p { color: var(--ink-soft); font-size: 1.08rem; max-width: 56ch; margin-top: 16px; }

/* ---------- Service detail blocks ---------- */

.service-detail {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}
.service-detail:last-child { border-bottom: none; }
.service-detail-head .eyebrow { margin-bottom: 16px; }
.service-detail-head h2 { font-size: 1.9rem; }
.service-detail-head p { color: var(--ink-soft); margin-top: 14px; }
.service-detail-body h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  margin-bottom: 14px;
}
.service-detail-body { display: flex; flex-direction: column; gap: 30px; }
.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
}
.examples-grid li {
  font-size: 0.95rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
}
.examples-grid li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); flex: none; }
.for-who { display: flex; flex-wrap: wrap; gap: 8px; }
.for-who span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--surface-sunken);
  border: 1px solid var(--line);
}
.why-box {
  background: var(--accent-tint);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  font-size: 0.95rem;
  color: var(--accent-strong);
}

@media (max-width: 860px) {
  .service-detail { grid-template-columns: 1fr; gap: 22px; }
  .examples-grid { grid-template-columns: 1fr; }
}

/* ---------- Process steps ---------- */

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.process-step { position: relative; padding-top: 28px; }
.process-step-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
  position: absolute;
  top: 0; left: 0;
}
.process-step h4 { font-size: 1.05rem; margin-bottom: 8px; }
.process-step p { color: var(--ink-soft); font-size: 0.92rem; }
.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 8px; right: -12px;
  width: 8px; height: 1px;
  background: var(--line-strong);
  display: none;
}
@media (min-width: 861px) {
  .process-step:not(:last-child)::after { display: block; }
}
@media (max-width: 860px) {
  .process-list { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .process-list { grid-template-columns: 1fr; }
}

/* ---------- Pricing note ---------- */

.pricing-note {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  padding: 30px 32px;
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.pricing-note p { color: var(--ink-soft); max-width: 52ch; }
.pricing-note strong { color: var(--ink); }

/* ---------- Portfolio grid page ---------- */

.filter-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.filter-chip {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  transition: all 0.2s var(--ease);
}
.filter-chip.active, .filter-chip:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* ---------- Case study ---------- */

.case-hero {
  padding: 56px 0 0;
}
.case-meta-row {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding: 32px 0;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.case-meta-item h5 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.case-meta-item p, .case-meta-item div { font-weight: 600; font-size: 0.98rem; }

.case-visual-hero {
  margin: 48px 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  overflow: hidden;
}

.case-body {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 60px;
}
.case-toc { position: sticky; top: 100px; align-self: start; display: flex; flex-direction: column; gap: 4px; }
.case-toc a {
  font-size: 0.9rem;
  color: var(--ink-faint);
  padding: 8px 0;
  border-left: 2px solid var(--line);
  padding-left: 16px;
}
.case-toc a.active { color: var(--ink); border-left-color: var(--accent); font-weight: 600; }

.case-section { margin-bottom: 56px; }
.case-section h3 { font-size: 1.4rem; margin-bottom: 16px; }
.case-section p { color: var(--ink-soft); margin-bottom: 14px; }
.case-section ul { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.case-section ul li {
  color: var(--ink-soft);
  font-size: 0.96rem;
  display: flex;
  gap: 10px;
}
.case-section ul li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); margin-top: 8px; flex: none; }

.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tags span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--surface-sunken);
  border: 1px solid var(--line);
}

.status-pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-strong);
  background: var(--accent-tint);
  padding: 6px 13px;
  border-radius: 999px;
}
.status-pill::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

@media (max-width: 900px) {
  .case-body { grid-template-columns: 1fr; }
  .case-toc { position: static; flex-direction: row; overflow-x: auto; padding-bottom: 8px; }
  .case-toc a { border-left: none; border-bottom: 2px solid var(--line); padding: 6px 14px 10px; white-space: nowrap; }
  .case-toc a.active { border-bottom-color: var(--accent); }
}

/* ---------- Form ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
}
@media (max-width: 940px) {
  .contact-layout { grid-template-columns: 1fr; }
}

.reassurance-box {
  background: var(--accent-tint);
  border-radius: var(--radius-md);
  padding: 26px 26px;
  margin-top: 28px;
}
.reassurance-box p { color: var(--accent-strong); font-size: 0.95rem; }

.contact-side .about-point { margin-top: 26px; }

.form-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}
@media (max-width: 560px) {
  .form-card { padding: 26px; }
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

.field { margin-bottom: 22px; }
.field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.field .optional {
  font-weight: 400;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.98rem;
  padding: 13px 15px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint);
}

.project-type-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
@media (max-width: 480px) { .project-type-grid { grid-template-columns: 1fr; } }

.type-option {
  position: relative;
}
.type-option input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}
.type-option span {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 13px 14px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  transition: all 0.2s var(--ease);
}
.type-option input:checked + span {
  border-color: var(--accent);
  background: var(--accent-tint);
  color: var(--accent-strong);
  font-weight: 600;
}
.type-option input:focus-visible + span {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

.form-submit-row {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 8px;
  flex-wrap: wrap;
}
.form-note { font-size: 0.82rem; color: var(--ink-faint); }

.form-status {
  margin-top: 18px;
  font-size: 0.9rem;
  padding: 14px 16px;
  border-radius: 10px;
  display: none;
}
.form-status.show { display: block; }
.form-status.success { background: var(--accent-tint); color: var(--accent-strong); }
.form-status.error { background: #FBEAEA; color: #A3312A; }

/* ---------- Misc pages ---------- */

.not-found {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}