/* ============================================================
   TWOSLAB — Independent Hardware Studio
   Minimal product gallery. Warm paper canvas, floating cutouts.
   ============================================================ */

:root {
  --paper: #e8e0d2;
  --ink: #11110f;
  --line: rgba(17, 17, 15, .16);
  --ink-soft: rgba(17, 17, 15, .55);
  --shadow: 0 30px 30px rgba(17, 17, 15, .18);
  --shadow-hover: 0 44px 44px rgba(17, 17, 15, .24);
  --ease: cubic-bezier(.22, .61, .21, 1);
}

/* ---------- Reset / base ---------- */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }

/* ---------- Page enter / leave transitions ---------- */

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--ink);
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform .52s var(--ease);
}

body.is-leaving {
  overflow: hidden;
  cursor: progress;
}

body.is-leaving::after { transform: scaleX(1); }
body.is-leaving.leave-prev::after { transform-origin: left center; }
body.is-leaving.leave-next::after { transform-origin: right center; }
body.is-leaving.leave-menu::after,
body.is-leaving.leave-product::after,
body.is-leaving.leave-default::after { transform-origin: center center; }

.site-header,
main,
.site-footer {
  transition: opacity .42s var(--ease), transform .5s var(--ease);
}

body.is-entering .site-header,
body.is-entering main,
body.is-entering .site-footer {
  opacity: 0;
  transform: translateY(12px);
}

body.is-leaving .site-header,
body.is-leaving main,
body.is-leaving .site-footer { opacity: 0; }

body.is-leaving.leave-next .site-header,
body.is-leaving.leave-next main,
body.is-leaving.leave-next .site-footer { transform: translateX(-30px); }

body.is-leaving.leave-prev .site-header,
body.is-leaving.leave-prev main,
body.is-leaving.leave-prev .site-footer { transform: translateX(30px); }

body.is-leaving.leave-menu .site-header,
body.is-leaving.leave-menu main,
body.is-leaving.leave-menu .site-footer,
body.is-leaving.leave-default .site-header,
body.is-leaving.leave-default main,
body.is-leaving.leave-default .site-footer { transform: scale(.985); }

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

a { color: inherit; }

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

/* Shared micro-typography: small bold uppercase, tracked out */
.kicker,
.tag,
.breadcrumb,
.site-footer,
.menu-trigger,
.spec-row dt {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

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

.site-header {
  position: relative;
  padding: 48px 24px;
  text-align: center;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand img { width: 40px; height: auto; }

.brand span {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.menu-trigger {
  position: absolute;
  top: 56px;
  right: clamp(24px, 5vw, 64px);
  padding: 8px 0;
  border: 0;
  background: none;
  color: var(--ink);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 6px;
  transition: text-decoration-color .3s var(--ease);
}

.menu-trigger:hover { text-decoration-color: var(--ink); }

/* ---------- Fullscreen menu overlay ---------- */

.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--paper);
  opacity: 0;
  visibility: hidden;
  transition: opacity .4s var(--ease), visibility 0s .4s;
}

.menu-overlay.is-open {
  opacity: 1;
  visibility: visible;
  transition: opacity .4s var(--ease);
}

.menu-overlay.is-closing {
  opacity: 0;
  visibility: visible;
  transition: opacity .36s var(--ease);
}

.menu-close {
  position: absolute;
  top: 44px;
  right: clamp(24px, 5vw, 64px);
  border: 0;
  background: none;
  color: var(--paper);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  padding: 8px;
}

.menu-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: center;
}

.menu-nav li {
  opacity: 0;
  transform: translateY(30px) rotate(.6deg);
  transition: opacity .42s var(--ease), transform .52s var(--ease);
}

.menu-nav li + li { margin-top: clamp(20px, 4vh, 40px); }

.menu-overlay.is-open .menu-nav li {
  opacity: 1;
  transform: none;
}

.menu-overlay.is-open .menu-nav li:nth-child(1) { transition-delay: .08s; }
.menu-overlay.is-open .menu-nav li:nth-child(2) { transition-delay: .14s; }
.menu-overlay.is-open .menu-nav li:nth-child(3) { transition-delay: .20s; }

.menu-overlay.is-closing .menu-nav li {
  opacity: 0;
  transform: translateY(-24px) rotate(-.5deg);
  transition-delay: 0s;
}

.menu-nav a {
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 900;
  letter-spacing: .04em;
  text-transform: uppercase;
  text-decoration: none;
  opacity: .9;
  transition: opacity .3s var(--ease), letter-spacing .4s var(--ease);
}

.menu-nav a:hover,
.menu-nav a:focus-visible {
  opacity: 1;
  letter-spacing: .08em;
}

.menu-note {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  opacity: .45;
  transform: translateY(0);
  transition: opacity .35s var(--ease), transform .45s var(--ease);
}

.menu-overlay.is-closing .menu-note {
  opacity: 0;
  transform: translateY(12px);
}

/* ---------- Home: hero ---------- */

.hero {
  padding: clamp(24px, 6vw, 72px) 24px clamp(80px, 14vw, 200px);
  text-align: center;
}

.hero img { width: 120px; height: auto; margin: 0 auto 20px; }

.hero .hero-brand {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .3em;
  text-transform: uppercase;
}

.hero .hero-tag {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- Home: objects scatter grid ---------- */

.objects {
  padding: 0 clamp(24px, 6vw, 96px) clamp(80px, 12vw, 180px);
}

.section-head { margin-bottom: clamp(64px, 10vw, 140px); }

.section-head h2 {
  margin: 0;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.objects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: clamp(24px, 4vw, 64px);
  row-gap: clamp(72px, 10vw, 140px);
  align-items: start;
}

.object { display: block; }

.object-link {
  display: block;
  text-decoration: none;
}

.object-link img {
  width: 100%;
  margin: 0 auto;
  filter: drop-shadow(var(--shadow));
  transition: transform .5s var(--ease), filter .5s var(--ease);
}

.object img { max-width: 340px; }

.object--soon .soon-frame {
  cursor: default;
}

.object--soon .soon-svg {
  display: block;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  color: var(--ink-soft);
  opacity: .45;
}

.object--soon .name { color: var(--ink-soft); }

.object-link:hover img,
.object-link:focus-visible img {
  transform: translateY(-8px) scale(1.02);
  filter: drop-shadow(var(--shadow-hover));
}

.object.is-selected {
  position: relative;
  z-index: 4;
}

.object.is-selected .object-link img {
  transform: translateY(-16px) scale(1.045) rotate(-.35deg);
  filter: drop-shadow(0 54px 48px rgba(17, 17, 15, .27));
}

.object.is-selected .object-label {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .28s var(--ease), transform .35s var(--ease);
}

.object-label {
  margin-top: clamp(24px, 4vw, 48px);
  text-align: center;
}

.object-label .num {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.object-label .name {
  display: block;
  font-size: clamp(15px, 1.6vw, 19px);
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}

.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Home: studio note ---------- */

.studio {
  padding: clamp(96px, 16vw, 240px) 24px clamp(120px, 18vw, 280px);
  text-align: center;
}

.studio .kicker { margin: 0 0 32px; color: var(--ink-soft); }

.studio h2 {
  margin: 0 auto clamp(32px, 5vw, 56px);
  max-width: 900px;
  font-size: clamp(40px, 8vw, 96px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.15;
  text-transform: uppercase;
}

.studio p.studio-copy {
  margin: 0 auto 40px;
  max-width: 560px;
  text-align: left;
  font-size: 15px;
  line-height: 1.8;
}

.studio .tag { margin: 0; color: var(--ink-soft); }

.studio-figure {
  margin: clamp(56px, 9vw, 110px) auto 0;
  max-width: 980px;
  width: 82%;
  text-align: center;
}

.studio-figure img {
  width: 100%;
  display: block;
}

.studio-figure figcaption {
  margin-top: clamp(20px, 3vw, 32px);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

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

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 32px clamp(24px, 5vw, 64px);
  border-top: 1px solid var(--line);
}

.site-footer p { margin: 0; }

.site-footer nav { display: flex; gap: 32px; }

.site-footer a {
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 6px;
  transition: text-decoration-color .3s var(--ease);
}

.site-footer a:hover { text-decoration-color: var(--ink); }

/* ---------- Detail pages ---------- */

.detail-main { padding-bottom: clamp(80px, 12vw, 160px); }

.breadcrumb {
  display: inline-block;
  margin: 8px 0 0 clamp(24px, 5vw, 64px);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 6px;
  transition: text-decoration-color .3s var(--ease);
}

.breadcrumb:hover { text-decoration-color: var(--ink); }

.detail-head {
  padding: clamp(48px, 8vw, 96px) 24px clamp(32px, 5vw, 56px);
  text-align: center;
  animation: rise .7s var(--ease) both;
}

.detail-head .index {
  margin: 0 0 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.detail-head h1 {
  margin: 0 0 20px;
  font-size: clamp(36px, 7vw, 80px);
  font-weight: 900;
  letter-spacing: .02em;
  line-height: 1.05;
  text-transform: none;
}

.detail-head .subtitle {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.detail-copy {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  font-size: 15px;
  line-height: 1.85;
  animation: rise .7s var(--ease) .1s both;
}

.variant-note {
  margin: clamp(28px, 4vw, 48px) auto 0;
  padding: 0 24px;
  max-width: 600px;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  animation: rise .7s var(--ease) .15s both;
}

.variant-note a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.detail-figure {
  margin: clamp(56px, 9vw, 120px) auto 0;
  max-width: 900px;
  width: 80%;
  text-align: center;
  animation: rise .7s var(--ease) .2s both;
}

.detail-figure img {
  width: 100%;
  margin: 0 auto;
  filter: drop-shadow(var(--shadow));
}

.detail-figure figcaption {
  margin-top: clamp(24px, 4vw, 40px);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.gallery {
  margin: clamp(72px, 11vw, 150px) auto 0;
  max-width: 1100px;
  width: 88%;
}

.gallery h2 {
  margin: 0 0 clamp(40px, 6vw, 72px);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
}

.gallery figure { margin: 0 0 clamp(48px, 7vw, 96px); }

.gallery figure:last-child { margin-bottom: 0; }

.gallery img {
  width: 100%;
  display: block;
}

.gallery figcaption {
  margin-top: clamp(16px, 2.5vw, 28px);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
}

.specs {
  max-width: 600px;
  margin: clamp(64px, 10vw, 120px) auto 0;
  padding: 0 24px;
  animation: rise .7s var(--ease) .3s both;
}

.specs h2 {
  margin: 0 0 24px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.spec-list { margin: 0; }

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.spec-row:last-child { border-bottom: 1px solid var(--line); }

.spec-row dt { margin: 0; color: var(--ink-soft); }

.spec-row dd {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-align: right;
}

/* Prev / next */

.pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-top: clamp(80px, 12vw, 160px);
  padding: 0 clamp(24px, 6vw, 96px);
}

.pager a {
  text-decoration: none;
  font-size: clamp(20px, 3.4vw, 36px);
  font-weight: 900;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: opacity .3s var(--ease), transform .4s var(--ease);
}

.pager a:hover { opacity: .55; }

.pager a.prev:hover,
.pager a.prev:focus-visible { transform: translateX(-8px); }

.pager a.next:hover,
.pager a.next:focus-visible { transform: translateX(8px); }

.pager a.is-active {
  opacity: 1;
  transform: translateX(0) scale(1.035);
}

.pager a .dir {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--ink-soft);
}

.pager a.next { text-align: right; }

@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}

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

@media (max-width: 759px) {
  .objects-grid {
    grid-template-columns: 1fr;
    row-gap: clamp(72px, 18vw, 120px);
  }

  .object img { max-width: min(340px, 84%); }
  .object--soon .soon-svg { max-width: min(400px, 88%); }

  .detail-figure,
  .studio-figure { width: 88%; }

  .gallery { width: 92%; }

  .pager { flex-direction: column; align-items: flex-start; gap: 40px; }
  .pager a.next { align-self: flex-end; }

  .site-footer { flex-direction: column; align-items: flex-start; gap: 20px; }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal { opacity: 1; transform: none; }

  .object-link:hover img,
  .object-link:focus-visible img { transform: none; }

  body::after { display: none; }

  body.is-entering .site-header,
  body.is-entering main,
  body.is-entering .site-footer,
  body.is-leaving .site-header,
  body.is-leaving main,
  body.is-leaving .site-footer {
    opacity: 1;
    transform: none;
  }

  .detail-head,
  .detail-copy,
  .detail-figure,
  .specs { animation: none; }
}