/* =====================================================================
   KURENAI CODE — premium dark-crimson boutique system
   Pure black canvas · deep crimson · bento grids · spring physics
   ===================================================================== */

:root {
  --bg: #050505;
  --bg-pure: #000000;
  --crimson: #d91a2a;
  --crimson-deep: #9b111e;
  --crimson-bright: #ff2b3d;
  --text: #f5f5f7;
  --text-muted: rgba(245, 245, 247, 0.58);
  --text-faint: rgba(245, 245, 247, 0.38);

  /* Cards: no hard borders — translucent glass with a crimson depth edge. */
  --card-bg: rgba(255, 255, 255, 0.022);
  --card-bg-hover: rgba(255, 255, 255, 0.04);
  --card-glow: 0 0 0 1px rgba(217, 26, 42, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 30px 80px -40px rgba(217, 26, 42, 0.45);
  --crimson-line: rgba(217, 26, 42, 0.42);

  --shell-max: 1160px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-pill: 999px;
  --touch-min: 44px;

  /* Signature easings. */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --font-display: var(--font-kurenai);
}

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

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

.kc-body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-pure);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

h1,
h2,
h3,
p {
  margin: 0;
}

/* ---------------------------------------------------------------------
   Background atmosphere — parallax Kanji + crimson glow + film grain
   --------------------------------------------------------------------- */
.kc-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.kc-glow {
  position: absolute;
  top: -12%;
  left: 50%;
  width: 86vw;
  height: 64vh;
  transform: translateX(-50%);
  background: radial-gradient(circle at 50% 30%, rgba(155, 17, 30, 0.2), transparent 62%);
  filter: blur(24px);
  animation: glow-drift 22s var(--ease-out) infinite alternate;
}

@keyframes glow-drift {
  0% {
    transform: translateX(-52%) translateY(0);
    opacity: 0.85;
  }
  100% {
    transform: translateX(-46%) translateY(34px);
    opacity: 1;
  }
}

/* Editor gutter rails — two faint hairlines framing the content column.
   Only on wide screens; purely decorative, never blocks interaction. */
.kc-rails {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100% - 48px, calc(var(--shell-max) + 96px));
  border-left: 1px solid rgba(245, 245, 247, 0.045);
  border-right: 1px solid rgba(245, 245, 247, 0.045);
  z-index: 1;
  pointer-events: none;
  display: none;
}

.kc-rails::before,
.kc-rails::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(217, 26, 42, 0.06) 50%, transparent);
}

.kc-rails::before {
  left: 64px;
}

.kc-rails::after {
  right: 64px;
}

@media (min-width: 1200px) {
  .kc-rails {
    display: block;
  }
}

/* Cinematic grain — overlay blend across the whole site. */
.kc-grain {
  position: fixed;
  inset: 0;
  z-index: 80;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  background-size: 160px 160px;
}

/* ---------------------------------------------------------------------
   Layout shell
   --------------------------------------------------------------------- */
.shell {
  width: min(100%, var(--shell-max));
  margin-inline: auto;
  padding-inline: 24px;
}

.page-main {
  position: relative;
  z-index: 2;
}

.section {
  position: relative;
  z-index: 2;
  padding: 88px 0;
}

.page-section {
  padding-top: 112px;
}

/* ---------------------------------------------------------------------
   Header
   --------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 0;
  padding-top: max(14px, env(safe-area-inset-top, 0px));
  background: rgba(5, 5, 5, 0.6);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  transition: background 0.4s var(--ease-out);
}

.site-header.is-scrolled {
  background: rgba(5, 5, 5, 0.82);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: var(--touch-min);
}

.brand-mark {
  width: auto;
  height: 42px;
  filter: drop-shadow(0 6px 18px rgba(217, 26, 42, 0.45));
}

.brand-text {
  display: grid;
  gap: 1px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  color: var(--crimson-bright);
  text-shadow: 0 0 22px rgba(217, 26, 42, 0.45);
}

.brand-ja {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: var(--touch-min);
  height: var(--touch-min);
  padding: 11px;
  border-radius: var(--radius-sm);
  color: var(--text);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.34s var(--ease-out), opacity 0.34s var(--ease-out);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--text);
  background: rgba(217, 26, 42, 0.1);
}

.nav-list a.is-active {
  color: var(--crimson-bright);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.lang-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  min-height: 32px;
  border-radius: var(--radius-pill);
  color: var(--text-faint);
  transition: color 0.3s var(--ease-out);
}

.lang-link.is-active,
.lang-link:hover {
  color: var(--crimson-bright);
}

.lang-divider {
  color: var(--text-faint);
}

/* ---------------------------------------------------------------------
   Buttons — crimson solid + crimson glass, trackpad-press physics
   --------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  padding: 0 26px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.45s var(--ease-spring), background-color 0.35s var(--ease-out),
    border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), color 0.3s var(--ease-out);
  will-change: transform;
}

.btn-lg {
  min-height: 52px;
  padding: 0 34px;
  font-size: 1rem;
}

/* Solid crimson — premium, glows on hover, presses inward. */
.btn-crimson {
  background: linear-gradient(180deg, var(--crimson) 0%, var(--crimson-deep) 100%);
  color: #fff;
  box-shadow: 0 16px 40px -18px rgba(217, 26, 42, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.btn-crimson:hover {
  transform: scale(0.98);
  box-shadow: 0 22px 54px -16px rgba(217, 26, 42, 0.95), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.btn-crimson:active {
  transform: scale(0.965);
}

/* Translucent crimson glass with a crisp 1px crimson border. */
.btn-ghost {
  background: rgba(217, 26, 42, 0.08);
  border: 1px solid var(--crimson-line);
  color: var(--text);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  transform: scale(0.98);
  background: rgba(217, 26, 42, 0.16);
  border-color: var(--crimson);
}

.btn-ghost:active {
  transform: scale(0.965);
}

.btn.is-pending {
  opacity: 0.42;
  cursor: not-allowed;
  box-shadow: none;
}

.btn.is-pending:hover {
  transform: none;
}

/* ---------------------------------------------------------------------
   Reveal + press primitives
   --------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-press] {
  transition: transform 0.45s var(--ease-spring), background-color 0.35s var(--ease-out),
    box-shadow 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
}

/* ---------------------------------------------------------------------
   Hero
   --------------------------------------------------------------------- */
.hero {
  position: relative;
  z-index: 2;
  padding: 96px 0 72px;
}

.hero-shell {
  display: grid;
  gap: 26px;
  max-width: 880px;
}

.hero-lockup {
  display: flex;
  align-items: center;
  gap: 18px;
}

.hero-mark {
  width: clamp(64px, 12vw, 96px);
  height: auto;
  filter: drop-shadow(0 18px 40px rgba(217, 26, 42, 0.6));
}

.hero-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  letter-spacing: 0.2em;
  color: var(--crimson-bright);
}

.hero-slogan {
  display: grid;
  gap: 6px;
}

.hero-slogan-en {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 5.4vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: 0;
  color: var(--text);
}

.hero-slogan-ja {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2.2vw, 1.1rem);
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.hero-typed {
  white-space: pre-wrap;
}

/* Terminal caret — a quiet code-studio wink after the slogan. */
.hero-caret {
  display: inline-block;
  width: 0.55ch;
  height: 1.05em;
  margin-left: 0.18em;
  vertical-align: -0.12em;
  background: var(--crimson-bright);
  box-shadow: 0 0 12px rgba(217, 26, 42, 0.6);
  animation: caret-blink 1.1s steps(1) infinite;
}

@keyframes caret-blink {
  0%,
  50% {
    opacity: 1;
  }
  50.01%,
  100% {
    opacity: 0;
  }
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 6.8vw, 3.8rem);
  line-height: 1.06;
  letter-spacing: -0.005em;
  max-width: 17ch;
  color: var(--text);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.3vw, 1.2rem);
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 52ch;
}

.hero-actions {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------------------------------------------------------------------
   Section heads
   --------------------------------------------------------------------- */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 40px;
}

.section-head-main {
  display: grid;
  gap: 12px;
}

.section-head--center {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.section-head--page {
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

/* Kicker reads like a source-code comment — a code-studio signature. */
.section-kicker {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--crimson);
}

.section-kicker::before {
  content: "// ";
  white-space: pre;
  color: var(--text-faint);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 4.6vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -0.005em;
  color: var(--text);
}

.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 6.2vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.005em;
  color: var(--text);
}

.section-lead {
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 56ch;
}

.section-link {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.84rem;
  color: var(--crimson-bright);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.section-link:hover {
  border-color: var(--crimson);
}

/* ---------------------------------------------------------------------
   Bento project grid
   --------------------------------------------------------------------- */
.bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.bento-card {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--card-glow);
  overflow: hidden;
  min-height: 230px;
}

/* IDE-style corner brackets — drawn in on hover, like a selection frame. */
.bento-card::before,
.bento-card::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--crimson);
  opacity: 0;
  z-index: 2;
  transition: opacity 0.4s var(--ease-out), transform 0.5s var(--ease-spring);
  pointer-events: none;
}

.bento-card::before {
  top: 16px;
  left: 16px;
  border-right: none;
  border-bottom: none;
  transform: translate(6px, 6px);
}

.bento-card::after {
  right: 16px;
  bottom: 16px;
  border-left: none;
  border-top: none;
  transform: translate(-6px, -6px);
}

.bento-card:hover::before,
.bento-card:hover::after {
  opacity: 0.9;
  transform: translate(0, 0);
}

.bento-card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 100% at 0% 0%, rgba(217, 26, 42, 0.16), transparent 55%);
  opacity: 0.7;
  transition: opacity 0.5s var(--ease-out);
  pointer-events: none;
}

/* Linear-style focus: hovering one card gently dims its neighbours. */
.bento-grid:hover .bento-card {
  opacity: 0.46;
  filter: saturate(0.7);
  transition: opacity 0.45s var(--ease-out), filter 0.45s var(--ease-out),
    transform 0.5s var(--ease-spring), background-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.bento-card {
  transition: opacity 0.45s var(--ease-out), filter 0.45s var(--ease-out),
    transform 0.5s var(--ease-spring), background-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.bento-grid:hover .bento-card:hover {
  opacity: 1;
  filter: none;
}

.bento-card:hover {
  transform: scale(0.985);
  background: var(--card-bg-hover);
  box-shadow: 0 0 0 1px rgba(217, 26, 42, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 40px 90px -38px rgba(217, 26, 42, 0.7);
}

.bento-card:hover .bento-card-glow {
  opacity: 1;
}

.bento-card-body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
  padding: 26px;
}

.bento-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.bento-card-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--crimson);
}

.bento-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
}

.bento-tag--accent {
  color: var(--crimson-bright);
  background: rgba(217, 26, 42, 0.12);
}

.bento-card-headings {
  display: grid;
  gap: 4px;
}

.bento-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.2rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.bento-card-tagline {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--crimson-bright);
  letter-spacing: 0.01em;
}

.bento-card-hook {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-muted);
  max-width: 42ch;
}

.bento-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bento-card-tags li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.035);
}

.bento-card-foot {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 6px;
}

.bento-card-release {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  letter-spacing: 0.02em;
}

/* ---------------------------------------------------------------------
   Capabilities / build grid
   --------------------------------------------------------------------- */
.build-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.build-cell {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 28px 26px;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--card-glow);
}

.build-cell:hover {
  transform: scale(0.985);
  background: var(--card-bg-hover);
}

.build-cell-no {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--crimson);
}

.build-cell-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.28rem;
  letter-spacing: 0;
  color: var(--text);
}

.build-cell-text {
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--text-muted);
}

/* ---------------------------------------------------------------------
   Contact
   --------------------------------------------------------------------- */
.contact-shell {
  max-width: 720px;
}

.contact-card {
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  box-shadow: var(--card-glow);
  padding: 30px;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-grid {
  display: grid;
  gap: 18px;
}

.contact-field {
  display: grid;
  gap: 8px;
}

.contact-field label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-field input,
.contact-field select,
.contact-field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--text);
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.contact-field input::placeholder,
.contact-field textarea::placeholder {
  color: var(--text-faint);
}

.contact-field input:focus,
.contact-field select:focus,
.contact-field textarea:focus {
  outline: none;
  border-color: var(--crimson);
  background: rgba(0, 0, 0, 0.55);
  box-shadow: 0 0 0 3px rgba(217, 26, 42, 0.18);
}

.contact-field textarea {
  resize: vertical;
  min-height: 140px;
}

/* SECURITY: honeypot pushed fully off-screen so only bots fill it. */
.contact-field--honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-submit {
  width: 100%;
}

.contact-alert {
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.contact-alert--success {
  color: #c9f3df;
  background: rgba(30, 160, 109, 0.14);
  border: 1px solid rgba(30, 160, 109, 0.34);
}

.contact-alert--error {
  color: #ffd7dc;
  background: rgba(217, 26, 42, 0.14);
  border: 1px solid rgba(217, 26, 42, 0.36);
}

/* ---------------------------------------------------------------------
   Projects index — accordion slices
   --------------------------------------------------------------------- */
.projects-hint {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.projects-hint::before {
  content: "› ";
  color: var(--crimson);
}

.project-slices {
  display: grid;
  gap: 14px;
}

.project-slice {
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--card-glow);
  overflow: hidden;
  transition: background-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.project-slice.is-open {
  background: var(--card-bg-hover);
  box-shadow: 0 0 0 1px rgba(217, 26, 42, 0.34), 0 40px 90px -40px rgba(217, 26, 42, 0.7);
}

.project-slice-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 18px;
  padding: 24px 26px;
  text-align: left;
}

.project-slice-index {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.1em;
  color: var(--crimson);
}

.project-slice-meta {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.project-slice-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.42rem;
  letter-spacing: 0;
}

.project-slice-tagline {
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--crimson-bright);
}

.project-slice-hook {
  font-size: 0.95rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-slice.is-open .project-slice-hook {
  white-space: normal;
}

.project-slice-badge {
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--crimson-bright);
  background: rgba(217, 26, 42, 0.12);
  white-space: nowrap;
}

.project-slice-badge--dev {
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
}

.project-slice-icon {
  position: relative;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  flex-shrink: 0;
  transition: transform 0.5s var(--ease-spring), background-color 0.3s var(--ease-out);
}

.project-slice-icon::before,
.project-slice-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1.5px;
  background: var(--text);
  transform: translate(-50%, -50%);
  transition: transform 0.5s var(--ease-spring), opacity 0.3s var(--ease-out);
}

.project-slice-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.project-slice.is-open .project-slice-icon {
  background: rgba(217, 26, 42, 0.16);
}

.project-slice.is-open .project-slice-icon::after {
  opacity: 0;
}

.project-slice-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.6s var(--ease-out);
}

.project-slice.is-open .project-slice-panel {
  grid-template-rows: 1fr;
}

.project-slice-panel-inner {
  overflow: hidden;
}

.project-slice-detail {
  padding: 0 26px 28px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease-out) 0.06s, transform 0.6s var(--ease-out) 0.06s;
}

.project-slice.is-open .project-slice-detail {
  opacity: 1;
  transform: translateY(0);
}

.project-slice-release {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.project-slice-release strong {
  color: var(--text);
  margin-left: 6px;
}

.project-slice-intro {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.project-slice-body {
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.project-slice-highlights {
  margin: 0 0 20px;
  padding-left: 1.15rem;
  color: var(--text-muted);
}

.project-slice-highlights li {
  margin-bottom: 8px;
}

.project-slice-highlights li::marker {
  color: var(--crimson);
}

.project-slice-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.project-slice-tags li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.035);
}

.project-slice-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

/* ---------------------------------------------------------------------
   Project detail pages
   --------------------------------------------------------------------- */
.project-shell {
  max-width: 760px;
}

.project-back {
  margin-bottom: 22px;
  font-size: 0.92rem;
}

.project-back a {
  color: var(--text-muted);
  transition: color 0.3s var(--ease-out);
}

.project-back a:hover {
  color: var(--crimson-bright);
}

.project-hero {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}

.status-badge {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--crimson-bright);
  background: rgba(217, 26, 42, 0.14);
}

.project-release {
  color: var(--text-muted);
}

.project-release strong {
  color: var(--text);
  margin-left: 4px;
}

.project-copy {
  display: grid;
  gap: 16px;
  margin-bottom: 28px;
}

.project-lead {
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.project-highlights {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.project-highlights li {
  margin-bottom: 10px;
}

.project-highlights li::marker {
  color: var(--crimson);
}

/* ---------------------------------------------------------------------
   Cadence download + unsigned macOS install guide
   --------------------------------------------------------------------- */
.cadence-download-block,
.cadence-install {
  margin-top: 40px;
}

.cadence-section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0;
  margin-bottom: 12px;
}

.cadence-download-note,
.cadence-install-intro {
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  max-width: 58ch;
}

.cadence-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 0 0 22px;
}

.cadence-spec dt {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.cadence-spec dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text);
}

.cadence-download-btn {
  margin-top: 4px;
}

.cadence-download-card {
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--card-glow);
}

.cadence-download-card-body {
  display: grid;
  gap: 14px;
  padding: 26px;
}

.cadence-download-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0;
}

.cadence-download-card-lead {
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 52ch;
}

.cadence-download-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.install-steps {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.install-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  box-shadow: var(--card-glow);
}

.install-step-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--crimson);
  padding-top: 2px;
}

.install-step-text {
  color: var(--text-muted);
  line-height: 1.55;
}

.install-aside {
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(217, 26, 42, 0.22);
  background: rgba(217, 26, 42, 0.06);
}

.install-aside-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.install-aside-text {
  color: var(--text-muted);
  line-height: 1.55;
  font-size: 0.96rem;
}

/* ---------------------------------------------------------------------
   About
   --------------------------------------------------------------------- */
.about-shell {
  max-width: 760px;
}

.about-body {
  display: grid;
  gap: 22px;
}

.about-rule {
  width: 72px;
  height: 2px;
  background: linear-gradient(90deg, var(--crimson), transparent);
}

.about-text {
  font-size: 1.18rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------------------------------------------------------------------
   Downloads
   --------------------------------------------------------------------- */
.downloads-group + .downloads-group {
  margin-top: 56px;
}

.downloads-group-title {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.wallpaper-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.wallpaper-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--card-glow);
  overflow: hidden;
}

.wallpaper-card:hover {
  transform: scale(0.99);
  background: var(--card-bg-hover);
}

.wallpaper-preview {
  background: #000;
  overflow: hidden;
}

.wallpaper-preview--landscape {
  aspect-ratio: 16 / 9;
}

.wallpaper-preview--portrait {
  aspect-ratio: 9 / 19.5;
  max-height: 440px;
}

.wallpaper-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.wallpaper-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 14px;
  padding: 24px;
}

.wallpaper-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0;
}

.wallpaper-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.wallpaper-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 0;
}

.wallpaper-spec dt {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.wallpaper-spec dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text);
}

.wallpaper-download {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 2;
  padding: 40px 0 56px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-mark {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--crimson);
}

.footer-wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

.copyright-text {
  font-size: 0.82rem;
  color: var(--text-faint);
}

/* ---------------------------------------------------------------------
   Focus accessibility
   --------------------------------------------------------------------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--crimson-bright);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------------
   Tablet
   --------------------------------------------------------------------- */
@media (min-width: 768px) {
  .shell {
    padding-inline: 32px;
  }

  .build-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .wallpaper-grid--desktop {
    grid-template-columns: repeat(2, 1fr);
  }

  .wallpaper-grid--mobile {
    grid-template-columns: minmax(0, 380px);
    justify-content: center;
  }

  /* Bento: asymmetric — Cadence tall on the left, Airbis + WAL Hub stacked. */
  .bento-grid {
    grid-template-columns: repeat(12, 1fr);
    grid-auto-rows: minmax(220px, auto);
    gap: 18px;
  }

  .bento-card--cadence {
    grid-column: 1 / 8;
    grid-row: 1 / 3;
  }

  .bento-card--airbis {
    grid-column: 8 / 13;
    grid-row: 1 / 2;
  }

  .bento-card--wal-hub {
    grid-column: 8 / 13;
    grid-row: 2 / 3;
  }
}

/* ---------------------------------------------------------------------
   Desktop
   --------------------------------------------------------------------- */
@media (min-width: 1025px) {
  .section {
    padding: 104px 0;
  }

  .page-section {
    padding-top: 128px;
  }

  .hero {
    padding: 128px 0 96px;
  }
}

/* ---------------------------------------------------------------------
   Reduced motion — honour the OS preference
   --------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .kc-glow,
  .hero-caret {
    animation: none;
  }
}