/* ==========================================================================
   YINOBESI · 一诺贝斯 — 光环境品牌官网
   Design system / Monochrome editorial
   ========================================================================== */

@font-face {
  font-family: 'Cormorant Garamond';
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url('../fonts/cormorant.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url('../fonts/inter.woff2') format('woff2');
}

:root {
  --ink: #0c0c0c;
  --ink-2: #171717;
  --paper: #f5f3ef;
  --paper-2: #eae7e1;
  --muted: #8a857e;
  --line: rgba(12, 12, 12, 0.14);
  --line-strong: rgba(12, 12, 12, 0.28);
  --serif: 'Cormorant Garamond', 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --pad: clamp(18px, 4.4vw, 76px);
  --maxw: 1720px;
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  --header-h: 82px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body[data-lang='zh'] { letter-spacing: 0.02em; }

body.no-scroll { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--ink); color: var(--paper); }

/* paper grain -------------------------------------------------------------- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

/* typography --------------------------------------------------------------- */
.display,
.serif {
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.012em;
}
body[data-lang='zh'] .display,
body[data-lang='zh'] .serif { letter-spacing: 0.03em; line-height: 1.16; }

.display { font-size: clamp(2.7rem, 6.6vw, 7rem); }
.h2 { font-size: clamp(1.9rem, 3.7vw, 3.5rem); }
.h3 { font-size: clamp(1.35rem, 2vw, 1.9rem); }
.display, .h2, .h3 { text-wrap: balance; }
.lead {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.7vw, 1.6rem);
  line-height: 1.62;
  font-weight: 300;
  letter-spacing: 0.005em;
  color: var(--ink);
}
.bg-ink .lead { color: var(--paper); }
body[data-lang='zh'] .lead { letter-spacing: 0.03em; line-height: 1.9; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.645rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.6rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
body[data-lang='zh'] .eyebrow { letter-spacing: 0.4em; }
.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
  flex: none;
}
.eyebrow.no-rule::before { display: none; }

p { margin: 0 0 1.1em; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; line-height: 1.85; }
.mono {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 400;
}

/* layout ------------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.section { padding: clamp(64px, 9vw, 150px) 0; }
.section.tight { padding: clamp(48px, 6vw, 96px) 0; }
.bg-ink {
  background: var(--ink);
  color: var(--paper);
  --line: rgba(245, 243, 239, 0.16);
  --line-strong: rgba(245, 243, 239, 0.34);
  --muted: #9b958d;
}
.bg-paper2 { background: var(--paper-2); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

.grid { display: grid; gap: clamp(20px, 3vw, 52px); }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.g-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* header ------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  color: #f5f3ef;
  transition: background 0.5s var(--ease), color 0.4s ease, height 0.4s var(--ease),
    border-color 0.4s ease, backdrop-filter 0.4s ease;
  border-bottom: 1px solid transparent;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  max-width: none;
}
.site-header.is-solid {
  background: rgba(245, 243, 239, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: var(--ink);
  border-bottom-color: var(--line);
  height: 68px;
}
.site-header.is-hidden { transform: translateY(-100%); }
.site-header { transition-property: background, color, height, border-color, transform, backdrop-filter; }

.brand { display: flex; align-items: center; gap: 0.72rem; flex: none; }
.brand svg { width: 22px; height: 22px; display: block; }
.brand .word {
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  line-height: 1;
}
.brand .sub {
  font-family: var(--serif);
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  display: none;
}

.nav { display: flex; align-items: center; gap: clamp(1.1rem, 2.1vw, 2.6rem); }
.nav a {
  position: relative;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 400;
  padding: 0.4rem 0;
  opacity: 0.86;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}
body[data-lang='zh'] .nav a { letter-spacing: 0.16em; font-size: 0.78rem; }
.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s var(--ease);
}
.nav a:hover { opacity: 1; }
.nav a:hover::after,
.nav a[aria-current='page']::after { transform: scaleX(1); }
.nav a[aria-current='page'] { opacity: 1; }

.header-right { display: flex; align-items: center; gap: clamp(0.8rem, 1.6vw, 1.6rem); }

.lang {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.lang button {
  opacity: 0.5;
  padding: 0.2rem 0.1rem;
  transition: opacity 0.3s ease;
  letter-spacing: 0.16em;
  font-size: 0.68rem;
  text-transform: uppercase;
}
.lang button[aria-pressed='true'] { opacity: 1; }
.lang span { opacity: 0.3; }

.menu-btn { display: none; width: 30px; height: 16px; position: relative; }
.menu-btn i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transition: transform 0.45s var(--ease), opacity 0.3s ease;
}
.menu-btn i:nth-child(1) { top: 3px; }
.menu-btn i:nth-child(2) { bottom: 3px; }
.menu-open .menu-btn i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.menu-open .menu-btn i:nth-child(2) { transform: translateY(-5px) rotate(-45deg); }

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 890;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--header-h) var(--pad) 3rem;
  opacity: 0;
  visibility: hidden;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.85s var(--ease), opacity 0.4s ease, visibility 0.85s;
}
.menu-open .nav-overlay { opacity: 1; visibility: visible; clip-path: inset(0 0 0 0); }
.nav-overlay a {
  font-family: var(--serif);
  font-size: clamp(2rem, 7vw, 3.4rem);
  font-weight: 300;
  line-height: 1.5;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid rgba(245, 243, 239, 0.12);
  padding: 0.5rem 0;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.6s var(--ease);
}
.menu-open .nav-overlay a { opacity: 1; transform: none; }
.nav-overlay a span.n {
  font-family: var(--sans);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.nav-overlay .ov-foot {
  margin-top: 2.4rem;
  display: flex;
  gap: 1.4rem;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* scroll progress */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: #fff;
  mix-blend-mode: difference;
  z-index: 950;
  opacity: 0.9;
  pointer-events: none;
}

/* hero --------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  color: var(--paper);
  background: var(--ink);
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; }
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) brightness(0.78) contrast(1.06);
  animation: heroIn 2.6s var(--ease) both;
  will-change: transform;
}
@keyframes heroIn {
  from { transform: scale(1.08); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 8, 8, 0.58) 0%, rgba(8, 8, 8, 0.12) 52%, rgba(8, 8, 8, 0) 78%),
    linear-gradient(180deg, rgba(8, 8, 8, 0.5) 0%, rgba(8, 8, 8, 0.05) 38%, rgba(8, 8, 8, 0.74) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-bottom: clamp(28px, 6vh, 64px);
  padding-top: calc(var(--header-h) + 4rem);
}
.hero-top {
  position: absolute;
  top: calc(var(--header-h) + 3.2rem);
  right: var(--pad);
  text-align: right;
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  line-height: 2.2;
  color: rgba(245, 243, 239, 0.62);
}
.hero h1 {
  margin: 0 0 1.6rem;
  font-size: clamp(2.5rem, 6.4vw, 7.2rem);
  max-width: 20ch;
}
.hero h1 .dim { color: rgba(245, 243, 239, 0.55); }
.hero-sub {
  max-width: 620px;
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  color: rgba(245, 243, 239, 0.72);
  line-height: 2.1;
  margin-bottom: 0;
}
.hero-foot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  align-items: end;
  gap: 2rem;
  margin-top: clamp(2rem, 5vw, 4rem);
  padding-top: 1.4rem;
  border-top: 1px solid rgba(245, 243, 239, 0.2);
}
.hero-foot .col span { display: block; }
.scroll-cue {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.65);
}
.scroll-cue i {
  display: block;
  width: 54px;
  height: 1px;
  background: rgba(245, 243, 239, 0.4);
  position: relative;
  overflow: hidden;
}
.scroll-cue i::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--paper);
  transform: translateX(-100%);
  animation: cue 2.4s var(--ease) infinite;
}
@keyframes cue {
  0% { transform: translateX(-100%); }
  55%, 100% { transform: translateX(100%); }
}

/* page hero (interior pages) ------------------------------------------------ */
.page-hero {
  position: relative;
  min-height: 68svh;
  display: flex;
  align-items: flex-end;
  color: var(--paper);
  background: var(--ink);
  overflow: hidden;
}
.page-hero .hero-media img { animation: none; }
.page-hero .wrap { position: relative; z-index: 2; padding-bottom: clamp(30px, 5vw, 66px); padding-top: calc(var(--header-h) + 6rem); }
.page-hero h1 { margin: 0; font-size: clamp(2.4rem, 6vw, 5.6rem); }
.page-hero .crumbs {
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.55);
  margin-bottom: 1.4rem;
}
.page-hero .crumbs a:hover { color: var(--paper); }

/* marquee ------------------------------------------------------------------ */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 1.15rem 0;
  white-space: nowrap;
}
.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 2.4rem;
  animation: slide 46s linear infinite;
  will-change: transform;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee span {
  font-family: var(--serif);
  font-size: clamp(0.95rem, 1.5vw, 1.35rem);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
}
.marquee b { font-weight: 300; color: var(--ink); }
@keyframes slide {
  to { transform: translateX(-50%); }
}

/* reveal ------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 1.05s var(--ease), transform 1.05s var(--ease);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

/* statement ---------------------------------------------------------------- */
.statement { display: grid; grid-template-columns: 1fr 1.62fr; gap: clamp(24px, 5vw, 90px); }
.statement .body p { max-width: 62ch; }
.statement .lead { max-width: 30ch; margin-bottom: 2rem; }
.statement .h2 { font-size: clamp(1.8rem, 3vw, 2.9rem); }
@media (max-width: 900px) { .statement { grid-template-columns: 1fr; } }

/* stats -------------------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: clamp(2.4rem, 5vw, 4.6rem); }
.stats > div { background: var(--paper); padding: 1.6rem 1.4rem 1.5rem; }
.bg-ink .stats > div { background: var(--ink); }
.stat .n { font-family: var(--serif); font-size: clamp(1.9rem, 3.2vw, 2.9rem); font-weight: 300; line-height: 1; display: block; font-variant-numeric: lining-nums; font-feature-settings: 'lnum' 1; }
.stat .l { font-size: 0.64rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-top: 0.6rem; display: block; }

/* collections -------------------------------------------------------------- */
.collections { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.collections > a { background: var(--paper); }
.coll {
  position: relative;
  display: block;
  min-height: clamp(420px, 62vh, 720px);
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
}
.coll img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) brightness(0.82) contrast(1.05);
  transition: transform 1.8s var(--ease), filter 1.2s ease;
}
.coll:hover img { transform: scale(1.05); filter: grayscale(0.15) brightness(0.86) contrast(1.02); }
.coll::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.28) 0%, rgba(0, 0, 0, 0) 45%, rgba(0, 0, 0, 0.72) 100%);
}
.coll-body {
  position: relative;
  z-index: 2;
  height: 100%;
  min-height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(22px, 3vw, 46px);
}
.coll-body .idx { font-size: 0.62rem; letter-spacing: 0.26em; opacity: 0.7; margin-bottom: auto; }
.coll-body h3 { font-family: var(--serif); font-weight: 300; font-size: clamp(1.7rem, 2.9vw, 2.7rem); margin: 0 0 0.6rem; letter-spacing: 0.04em; }
.coll-body p { font-size: 0.8rem; line-height: 1.9; color: rgba(245, 243, 239, 0.74); max-width: 34ch; margin: 0; }
.coll-link { display: flex; align-items: center; gap: 0.7rem; margin-top: 1.4rem; font-size: 0.64rem; letter-spacing: 0.24em; text-transform: uppercase; }
.coll-link i { display: block; width: 28px; height: 1px; background: currentColor; transition: width 0.5s var(--ease); }
.coll:hover .coll-link i { width: 56px; }

/* works -------------------------------------------------------------------- */
.works { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(18px, 2.4vw, 40px); }
.work { display: block; }
.work-media { position: relative; overflow: hidden; background: var(--paper-2); }
.work-media img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.04); transition: transform 1.6s var(--ease), filter 1.1s ease; }
.work:hover .work-media img { transform: scale(1.045); filter: grayscale(0.1) contrast(1); }
.work figcaption { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; padding-top: 0.95rem; border-top: 1px solid var(--line); margin-top: 1rem; }
.work .t { font-family: var(--serif); font-size: 1.12rem; letter-spacing: 0.04em; }
.work .m { font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.work.tall .work-media { aspect-ratio: 3 / 4; }
.work.wide .work-media { aspect-ratio: 16 / 10; }
.work.sq .work-media { aspect-ratio: 1 / 1; }
.span-7 { grid-column: span 7; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-4 { grid-column: span 4; }
.span-8 { grid-column: span 8; }
.offset-down { margin-top: clamp(20px, 5vw, 76px); }

/* metrics ------------------------------------------------------------------ */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.metrics > div { padding: 1.9rem 1.6rem 1.7rem 0; border-right: 1px solid var(--line); }
.metrics > div:last-child { border-right: 0; }
.metrics .n { font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.7rem); line-height: 1; display: block; font-weight: 300; font-variant-numeric: lining-nums; font-feature-settings: 'lnum' 1; }
.metrics .n sup { font-size: 0.4em; vertical-align: super; letter-spacing: 0.04em; }
.metrics .l { display: block; margin-top: 0.85rem; font-size: 0.65rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); }

/* split feature ------------------------------------------------------------ */
.feature { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(26px, 5vw, 84px); align-items: center; }
.feature.rev .f-media { order: 2; }
.f-media { position: relative; overflow: hidden; aspect-ratio: 5 / 4; }
.f-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  transition: filter 1.2s ease;
}
.f-media:hover img { filter: grayscale(0.12); }
.f-media.tall { aspect-ratio: 4 / 5; }
.f-media.wide { aspect-ratio: 5 / 4; }
@media (max-width: 900px) { .feature { grid-template-columns: 1fr; } .feature.rev .f-media { order: 0; } }

/* protocol list ------------------------------------------------------------ */
.protocols { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.protocols div { padding: 1.5rem 1.1rem; border-right: 1px solid var(--line); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; }
.protocols div:last-child { border-right: 0; }
.protocols i {
  display: block;
  font-style: normal;
  font-family: var(--sans);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: inherit;
  margin-bottom: 0.55rem;
}
.protocols span { display: block; font-size: 0.7rem; letter-spacing: 0.04em; color: var(--muted); }

/* numbered quality list ---------------------------------------------------- */
.q-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(24px, 5vw, 80px); }
.q-item { display: flex; align-items: baseline; gap: 1.2rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.q-item .i { font-size: 0.62rem; letter-spacing: 0.18em; color: var(--muted); width: 2ch; flex: none; }
.q-item .t { font-family: var(--serif); font-size: 1.1rem; letter-spacing: 0.05em; }
.q-item .d { margin-left: auto; font-size: 0.72rem; color: var(--muted); letter-spacing: 0.06em; text-align: right; }

/* product rows ------------------------------------------------------------- */
.p-rows { border-top: 1px solid var(--line); }
.p-row {
  display: grid;
  grid-template-columns: 56px 1.15fr 1.4fr 1fr 40px;
  gap: clamp(12px, 2vw, 34px);
  align-items: center;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: opacity 0.4s ease;
  cursor: pointer;
}
.p-rows:hover .p-row { opacity: 0.42; }
.p-rows:hover .p-row:hover { opacity: 1; }
.p-row .idx { font-size: 0.62rem; letter-spacing: 0.18em; color: var(--muted); }
.p-row .name { font-family: var(--serif); font-size: clamp(1.25rem, 1.9vw, 1.75rem); letter-spacing: 0.04em; line-height: 1.25; }
.p-row .name em { display: block; font-style: normal; font-family: var(--sans); font-size: 0.6rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted); margin-top: 0.5rem; }
.p-row .desc { font-size: 0.8rem; color: var(--muted); line-height: 1.85; }
.p-row .spec { font-size: 0.7rem; letter-spacing: 0.1em; color: var(--ink); text-align: right; line-height: 2; }
.p-row .arw { justify-self: end; width: 26px; height: 1px; background: currentColor; position: relative; opacity: 0.5; transition: width 0.5s var(--ease), opacity 0.3s; }
.p-row .arw::after { content: ''; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }
.p-row:hover .arw { width: 42px; opacity: 1; }

.p-preview {
  position: fixed;
  z-index: 800;
  width: 300px;
  height: 380px;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.96);
  transition: opacity 0.4s ease, transform 0.6s var(--ease);
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.22);
}
.p-preview.on { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.p-preview img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); }

/* filter chips ------------------------------------------------------------- */
.chips { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.chip {
  padding: 0.5rem 1.05rem;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  transition: all 0.35s ease;
}
.chip:hover { color: var(--ink); border-color: var(--ink); }
.chip.on { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* cta ---------------------------------------------------------------------- */
.cta { position: relative; overflow: hidden; }
.cta-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: clamp(24px, 5vw, 70px); flex-wrap: wrap; }
.cta h2 { margin: 0; font-size: clamp(2rem, 4.6vw, 4.4rem); max-width: 18ch; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1.05rem 2rem;
  border: 1px solid currentColor;
  border-radius: 100px;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transition: background 0.45s var(--ease), color 0.45s var(--ease), gap 0.45s var(--ease);
  white-space: nowrap;
}
.btn:hover { gap: 1.5rem; }
.btn.solid { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.solid:hover { background: transparent; color: var(--ink); }
.bg-ink .btn.solid, .cta .btn.solid { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.bg-ink .btn.solid:hover, .cta .btn.solid:hover { background: transparent; color: var(--paper); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.bg-ink .btn.ghost:hover { background: var(--paper); color: var(--ink); }

/* footer ------------------------------------------------------------------- */
.site-footer { background: var(--ink); color: var(--paper); padding: clamp(48px, 7vw, 96px) 0 2rem; --line: rgba(245, 243, 239, 0.14); --muted: #8d8780; }
.foot-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: clamp(24px, 4vw, 60px); padding-bottom: clamp(34px, 5vw, 64px); }
.foot-top h4 { font-size: 0.62rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--muted); font-weight: 500; margin: 0 0 1.3rem; }
.foot-links a { display: block; font-size: 0.82rem; padding: 0.35rem 0; opacity: 0.82; transition: opacity 0.3s, transform 0.4s var(--ease); }
.foot-links a:hover { opacity: 1; transform: translateX(4px); }
.foot-brand .word { font-size: 1.1rem; letter-spacing: 0.34em; text-transform: uppercase; }
.foot-brand p { font-size: 0.78rem; color: var(--muted); line-height: 2; margin-top: 1rem; max-width: 30ch; }
.news { display: flex; border-bottom: 1px solid var(--line-strong); padding-bottom: 0.6rem; margin-top: 0.4rem; }
.news input { flex: 1; background: none; border: 0; color: var(--paper); font-size: 0.8rem; letter-spacing: 0.06em; outline: none; padding: 0.4rem 0; }
.news input::placeholder { color: var(--muted); }
.news button { font-size: 0.64rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); transition: color 0.3s; }
.news button:hover { color: var(--paper); }
.foot-bottom { display: flex; justify-content: space-between; gap: 1.4rem; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 1.5rem; font-size: 0.66rem; letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; }
.foot-bottom a:hover { color: var(--paper); }

/* form --------------------------------------------------------------------- */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem 1.4rem; }
.field { position: relative; }
.field.full { grid-column: 1 / -1; }
.field label { display: block; font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.55rem; }
.field input,
.field textarea,
.field select {
  width: 100%;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  padding: 0.55rem 0;
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--ink);
  border-radius: 0;
  outline: none;
  transition: border-color 0.35s ease;
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus,
.field textarea:focus,
.field select:focus { border-bottom-color: var(--ink); }
.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 26px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%230c0c0c' stroke-width='1'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
}
.field textarea { field-sizing: content; }
.form-note { font-size: 0.7rem; color: var(--muted); line-height: 1.9; }
.form-msg { font-size: 0.8rem; letter-spacing: 0.06em; min-height: 1.4em; margin-top: 1rem; }
.form > .full { grid-column: 1 / -1; }
.form-msg.ok { color: #2f6b3f; }
.form-msg.err { color: #9b2f2f; }

/* info list ---------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.15fr; gap: clamp(30px, 5vw, 80px); }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.info-list { border-top: 1px solid var(--line); }
.info-list > div { display: grid; grid-template-columns: 108px 1fr; gap: 1rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.info-list dt { font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); }
.info-list dd { margin: 0; font-size: 0.88rem; line-height: 1.9; }

/* misc --------------------------------------------------------------------- */
.tag-row { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; margin-top: 1.6rem; }
.tag-row span { font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.center { text-align: center; }
.mt-l { margin-top: clamp(2.6rem, 5vw, 5rem); }
.mt-m { margin-top: clamp(1.6rem, 3vw, 2.6rem); }
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.flow > div { background: var(--paper); padding: clamp(20px, 2.6vw, 34px); }
.bg-ink .flow > div { background: var(--ink); }
.flow h4 { font-family: var(--serif); font-weight: 300; font-size: 1.3rem; margin: 0 0 1rem; letter-spacing: 0.05em; }
.flow ul { list-style: none; margin: 0; padding: 0; }
.flow li { font-size: 0.79rem; color: var(--muted); line-height: 2.1; border-bottom: 1px solid var(--line); }
.flow li:last-child { border-bottom: 0; }
.flow .step { font-size: 0.6rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 0.7rem; }

/* responsive --------------------------------------------------------------- */
@media (max-width: 1180px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metrics > div:nth-child(2) { border-right: 0; }
  .metrics > div:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .protocols { grid-template-columns: repeat(3, 1fr); }
  .protocols div:nth-child(3n) { border-right: 0; }
  .protocols div { border-bottom: 1px solid var(--line); }
  .p-row { grid-template-columns: 44px 1.2fr 1.3fr 34px; }
  .p-row .spec { display: none; }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .nav { display: none; }
  .menu-btn { display: block; }
  .brand .word { font-size: 0.82rem; letter-spacing: 0.28em; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .collections { grid-template-columns: 1fr; }
  .coll { min-height: 62vh; }
  .works { gap: 22px; }
  .span-7, .span-5, .span-6, .span-4, .span-8 { grid-column: span 12; }
  .offset-down { margin-top: 0; }
  .work.tall .work-media, .work.sq .work-media { aspect-ratio: 4 / 3; }
  .q-list { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .form { grid-template-columns: 1fr; }
  .hero-top { display: none; }
  .p-row {
    grid-template-columns: 30px 1fr 28px;
    grid-template-areas:
      'idx name arw'
      '.   desc .';
    row-gap: 0.5rem;
    align-items: start;
    padding: 1.35rem 0;
  }
  .p-row .idx { grid-area: idx; }
  .p-row .name { grid-area: name; }
  .p-row .desc { grid-area: desc; display: block; font-size: 0.75rem; line-height: 1.8; }
  .p-row .arw { grid-area: arw; align-self: center; }
  .p-preview { display: none; }
  .hero-foot { grid-template-columns: 1fr 1fr; gap: 1.1rem 1rem; }
  .hero-foot .scroll-cue { grid-column: 1 / -1; margin-top: 0.4rem; }
  .btn { padding: 0.9rem 1.5rem; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .h2 { font-size: 1.68rem; }
  .lead { font-size: 1.06rem; }
  .stats > div { padding: 1.2rem 1rem; }
  .protocols { grid-template-columns: 1fr 1fr; }
  .protocols div:nth-child(2n) { border-right: 0; }
  .metrics { grid-template-columns: 1fr; }
  .metrics > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .q-item .d { display: none; }
  .foot-top { grid-template-columns: 1fr; gap: 2rem; }
  .info-list > div { grid-template-columns: 1fr; gap: 0.3rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}