/* Shivro · Window Scroll Layout 39 · Dark Premium Editorial */

:root {
  --sr-bg: #0a0c0f;
  --sr-bg-elev: #12151a;
  --sr-bg-glass: rgba(18, 21, 26, 0.72);
  --sr-text: #e8e4dc;
  --sr-text-muted: #8b9199;
  --sr-copper: #c4a574;
  --sr-copper-dim: #8a7355;
  --sr-steel: #5c6370;
  --sr-frame: #2a2f38;
  --sr-frame-light: #3d4450;
  --sr-accent: #d4b896;
  --sr-danger: #c47070;
  --sr-font-serif: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --sr-font-sans: 'IBM Plex Sans JP', sans-serif;
  --sr-sill-h: 56px;
  --sr-rail-w: 88px;
  --sr-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sr-window-gap: clamp(1.5rem, 4vw, 3rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html.sr-snap { scroll-snap-type: y proximity; }

body.sr-body {
  margin: 0;
  font-family: var(--sr-font-sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.65;
  color: var(--sr-text);
  background: var(--sr-bg);
  overflow-x: hidden;
}

body.sr-body.page-home { padding-right: var(--sr-rail-w); }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--sr-copper); text-decoration: none; transition: color 0.25s; }
a:hover { color: var(--sr-accent); }
h1, h2, h3 { font-family: var(--sr-font-serif); font-weight: 600; line-height: 1.15; margin: 0 0 0.75em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
h2 em, h1 em { font-style: italic; color: var(--sr-copper); }
p { margin: 0 0 1em; }

.sr-micro {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sr-steel);
  margin: 0 0 0.75em;
}
.sr-lead { font-size: 1.05rem; color: var(--sr-text-muted); max-width: 52ch; }

.sr-skip {
  position: absolute; left: -9999px; top: 0; z-index: 9999;
  padding: 0.5rem 1rem; background: var(--sr-copper); color: var(--sr-bg);
}
.sr-skip:focus { left: 0; }

/* Buttons */
.sr-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.65rem 1.4rem;
  font-family: var(--sr-font-sans); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.06em; border: 1px solid transparent;
  cursor: pointer; transition: all 0.3s var(--sr-ease);
  background: transparent; color: var(--sr-text);
}
.sr-btn--copper { background: var(--sr-copper); color: var(--sr-bg); border-color: var(--sr-copper); }
.sr-btn--copper:hover { background: var(--sr-accent); border-color: var(--sr-accent); color: var(--sr-bg); }
.sr-btn--ghost { border-color: var(--sr-frame-light); color: var(--sr-text-muted); }
.sr-btn--ghost:hover { border-color: var(--sr-copper); color: var(--sr-copper); }
.sr-btn--lg { padding: 0.85rem 1.8rem; font-size: 0.88rem; }
.sr-link { font-size: 0.85rem; letter-spacing: 0.04em; border-bottom: 1px solid var(--sr-copper-dim); padding-bottom: 2px; }

/* Sill Navbar */
.sr-sill {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  height: var(--sr-sill-h);
  background: var(--sr-bg-glass);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--sr-frame);
}
body.page-home .sr-sill { right: var(--sr-rail-w); }

.sr-sill__frame {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; padding: 0 clamp(1rem, 3vw, 2rem);
  max-width: 1400px; margin: 0 auto;
}
.sr-sill__brand {
  display: flex; align-items: center; gap: 0.65rem;
  color: var(--sr-text); text-decoration: none;
}
.sr-sill__brand:hover { color: var(--sr-copper); }
.sr-sill__handle {
  width: 28px; height: 4px; background: var(--sr-copper);
  border-radius: 2px; box-shadow: 0 6px 0 var(--sr-frame-light);
}
.sr-sill__name { font-family: var(--sr-font-serif); font-size: 1.15rem; letter-spacing: 0.2em; font-weight: 600; }
.sr-sill__loc { font-size: 0.65rem; color: var(--sr-steel); letter-spacing: 0.08em; }

.sr-sill__nav { display: flex; gap: 1.5rem; }
.sr-sill__nav a {
  font-size: 0.78rem; letter-spacing: 0.06em; color: var(--sr-text-muted);
  position: relative; padding: 0.25rem 0;
}
.sr-sill__nav a::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px;
  background: var(--sr-copper); transition: width 0.3s var(--sr-ease);
}
.sr-sill__nav a:hover, .sr-sill__nav a.is-active { color: var(--sr-text); }
.sr-sill__nav a:hover::after, .sr-sill__nav a.is-active::after { width: 100%; }
.sr-sill__cta { color: var(--sr-copper) !important; }

.sr-sill__tools { display: flex; align-items: center; gap: 0.75rem; }
.sr-sill__search, .sr-sill__burger {
  background: none; border: none; color: var(--sr-text-muted); cursor: pointer; padding: 0.35rem;
}
.sr-sill__search:hover, .sr-sill__burger:hover { color: var(--sr-copper); }
.sr-sill__cart {
  position: relative; color: var(--sr-text-muted); display: flex; align-items: center;
}
.sr-sill__cart span {
  position: absolute; top: -4px; right: -8px;
  font-size: 0.6rem; background: var(--sr-copper); color: var(--sr-bg);
  min-width: 16px; height: 16px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.sr-sill__burger { display: none; flex-direction: column; gap: 5px; }
.sr-sill__burger span { display: block; width: 20px; height: 1.5px; background: currentColor; }

.sr-sill__progress {
  position: absolute; bottom: 0; left: 0; height: 2px;
  background: var(--sr-copper); width: 0%; transition: width 0.1s linear;
}

/* Window Rail */
.sr-window-rail {
  position: fixed; top: var(--sr-sill-h); right: 0; bottom: 0; width: var(--sr-rail-w);
  z-index: 800; background: var(--sr-bg-elev);
  border-left: 1px solid var(--sr-frame);
  display: flex; flex-direction: column; padding: 1rem 0.5rem;
}
.sr-window-rail__label {
  font-size: 0.55rem; letter-spacing: 0.2em; color: var(--sr-steel);
  text-align: center; margin: 0 0 0.75rem;
}
.sr-window-rail__list {
  list-style: none; margin: 0; padding: 0; flex: 1;
  display: flex; flex-direction: column; gap: 2px;
}
.sr-window-rail__list button {
  background: none; border: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 0.45rem 0.25rem; color: var(--sr-steel);
  font-size: 0.55rem; letter-spacing: 0.04em;
  transition: color 0.25s, background 0.25s;
  border-left: 2px solid transparent; width: 100%;
}
.sr-window-rail__list button span { font-family: var(--sr-font-serif); font-size: 0.75rem; color: var(--sr-frame-light); }
.sr-window-rail__list button.is-active,
.sr-window-rail__list button:hover {
  color: var(--sr-copper); background: rgba(196, 165, 116, 0.06);
  border-left-color: var(--sr-copper);
}
.sr-window-rail__list button.is-active span { color: var(--sr-copper); }
.sr-window-rail__depth {
  text-align: center; padding-top: 0.75rem; border-top: 1px solid var(--sr-frame);
}
.sr-window-rail__depth span {
  display: block; font-family: var(--sr-font-serif); font-size: 1.4rem; color: var(--sr-copper);
}
.sr-window-rail__depth small { font-size: 0.55rem; color: var(--sr-steel); letter-spacing: 0.1em; }

/* Main */
.sr-main { padding-top: var(--sr-sill-h); min-height: 100vh; }

/* Scroll Hall · Window Snap */
.sr-scroll-hall { position: relative; }

.sr-window {
  min-height: 100vh; min-height: 100dvh;
  scroll-snap-align: start;
  display: flex; align-items: center; justify-content: center;
  padding: var(--sr-window-gap);
  position: relative;
}

.sr-window__frame {
  position: relative; width: 100%; max-width: 1200px;
  border: 1px solid var(--sr-frame-light);
  background: var(--sr-bg-elev);
  box-shadow:
    0 0 0 8px var(--sr-bg),
    0 24px 80px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  overflow: hidden;
}
.sr-window__frame--hero { min-height: clamp(480px, 85vh, 780px); display: grid; place-items: end start; }
.sr-window__frame--split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; min-height: 520px;
}

.sr-window__glass {
  position: absolute; inset: 0; overflow: hidden;
}
.sr-window__glass img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.55) saturate(0.85);
  transform: scale(1.05);
  transition: transform 0.6s var(--sr-ease);
}
.sr-window--aperture:hover .sr-window__glass img { transform: scale(1.08); }

.sr-window__mullions {
  position: absolute; inset: 0; pointer-events: none; z-index: 2;
  display: grid; grid-template-columns: 1fr 1fr 1fr;
}
.sr-window__mullions span {
  border-right: 1px solid rgba(196, 165, 116, 0.12);
}
.sr-window__mullions span:last-child { border-right: none; }

.sr-window__sash {
  position: relative; z-index: 3; padding: clamp(2rem, 5vw, 4rem);
  max-width: 580px;
  background: linear-gradient(135deg, rgba(10, 12, 15, 0.92) 0%, rgba(10, 12, 15, 0.6) 100%);
  margin: clamp(1.5rem, 4vw, 3rem);
  border-left: 3px solid var(--sr-copper);
}
.sr-window__title { margin-bottom: 0.5em; }
.sr-window__deck { color: var(--sr-text-muted); font-size: 0.95rem; }
.sr-window__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

.sr-window__tag {
  position: absolute; top: 1rem; right: 1rem; z-index: 5;
  font-family: var(--sr-font-serif); font-size: 0.85rem;
  color: var(--sr-copper-dim); letter-spacing: 0.1em;
  border: 1px solid var(--sr-frame); padding: 0.25rem 0.6rem;
  background: rgba(10, 12, 15, 0.8);
}
.sr-window__tag--float { position: static; margin: 1rem auto 0; display: inline-block; }

/* Story */
.sr-story { padding: clamp(2rem, 4vw, 3.5rem); display: flex; flex-direction: column; justify-content: center; }
.sr-story__quote {
  margin: 1.5rem 0 0; padding-left: 1rem;
  border-left: 2px solid var(--sr-copper);
  font-family: var(--sr-font-serif); font-style: italic; color: var(--sr-text-muted);
}
.sr-story__quote cite { display: block; font-size: 0.75rem; font-style: normal; margin-top: 0.5rem; color: var(--sr-steel); }
.sr-story__pane { position: relative; min-height: 320px; }
.sr-window__subframe {
  height: 100%; min-height: 320px; overflow: hidden;
  border-left: 1px solid var(--sr-frame);
}
.sr-window__subframe img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.9); }
.sr-story__pane figcaption { padding: 0.75rem 1rem; background: var(--sr-bg); }

/* Horizon Rail */
.sr-window--horizon {
  flex-direction: column; align-items: stretch;
  min-height: auto; padding-bottom: 4rem;
}
.sr-horizon__head { max-width: 1200px; margin: 0 auto 1.5rem; padding: 0 var(--sr-window-gap); }
.sr-horizon__track {
  display: flex; gap: 1.25rem;
  overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 1rem var(--sr-window-gap) 2rem;
  scrollbar-width: thin; scrollbar-color: var(--sr-copper-dim) var(--sr-bg);
  -webkit-overflow-scrolling: touch;
}
.sr-horizon__track::-webkit-scrollbar { height: 4px; }
.sr-horizon__track::-webkit-scrollbar-thumb { background: var(--sr-copper-dim); }

.sr-horizon__cell {
  flex: 0 0 clamp(260px, 28vw, 320px);
  scroll-snap-align: center; cursor: pointer;
  transition: transform 0.35s var(--sr-ease);
}
.sr-horizon__cell.is-lit { transform: translateY(-8px); }
.sr-horizon__frame {
  position: relative; border: 1px solid var(--sr-frame);
  overflow: hidden; aspect-ratio: 3/2;
  box-shadow: inset 0 0 0 1px rgba(196, 165, 116, 0);
  transition: box-shadow 0.35s;
}
.sr-horizon__cell.is-lit .sr-horizon__frame {
  box-shadow: inset 0 0 0 2px var(--sr-copper), 0 12px 40px rgba(0,0,0,0.4);
}
.sr-horizon__frame img { width: 100%; height: 100%; object-fit: cover; }
.sr-horizon__num {
  position: absolute; bottom: 0.5rem; left: 0.5rem;
  font-family: var(--sr-font-serif); font-size: 1.2rem; color: var(--sr-copper);
  background: rgba(10,12,15,0.75); padding: 0.15rem 0.45rem;
}
.sr-horizon__meta { padding: 0.75rem 0; }
.sr-horizon__meta h3 { font-size: 1rem; margin: 0.25rem 0; }
.sr-horizon__meta p { font-size: 0.82rem; color: var(--sr-text-muted); margin: 0; }
.sr-horizon__detail {
  max-width: 1200px; margin: 0 auto; padding: 1.5rem var(--sr-window-gap);
  border-top: 1px solid var(--sr-frame);
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1rem;
}
.sr-horizon__detail h3 { margin: 0; font-size: 1.3rem; }
.sr-horizon__detail p { margin: 0; color: var(--sr-text-muted); grid-column: 1; }

/* Mullion Selector */
.sr-mullion {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 0;
  min-height: 560px;
}
.sr-mullion__copy { padding: clamp(2rem, 4vw, 3rem); border-right: 1px solid var(--sr-frame); }
.sr-mullion__tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-top: 1.5rem; }
.sr-mullion__tabs button {
  padding: 0.6rem; background: var(--sr-bg); border: 1px solid var(--sr-frame);
  color: var(--sr-text-muted); font-size: 0.78rem; cursor: pointer;
  transition: all 0.25s;
}
.sr-mullion__tabs button.is-active,
.sr-mullion__tabs button:hover {
  border-color: var(--sr-copper); color: var(--sr-copper);
  background: rgba(196, 165, 116, 0.08);
}
.sr-mullion__stage { position: relative; padding: 1.5rem; }
.sr-mullion__view {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 1.25rem;
  align-items: center; animation: srFadeIn 0.45s var(--sr-ease);
}
.sr-mullion__view[hidden] { display: none; }
.sr-mullion__frame { position: relative; border: 1px solid var(--sr-frame-light); overflow: hidden; }
.sr-mullion__bars {
  position: absolute; inset: 0; pointer-events: none;
  display: grid; grid-template-columns: 1fr 1fr;
}
.sr-mullion__bars span { border-right: 1px solid rgba(196,165,116,0.15); }
.sr-mullion__spec h3 { font-size: 1.2rem; }
.sr-mullion__price { font-family: var(--sr-font-serif); font-size: 1.4rem; color: var(--sr-copper); margin: 0.5rem 0 1rem; }
.sr-mullion__spec dl { display: grid; gap: 0.5rem; margin: 0 0 1.25rem; }
.sr-mullion__spec dl div { display: flex; justify-content: space-between; font-size: 0.85rem; border-bottom: 1px solid var(--sr-frame); padding-bottom: 0.35rem; }
.sr-mullion__spec dt { color: var(--sr-steel); }

/* Prism Experimental */
.sr-prism {
  display: grid; grid-template-columns: 1.4fr 1fr; min-height: 520px;
}
.sr-prism__mask {
  position: relative; overflow: hidden; min-height: 400px;
  clip-path: polygon(0 8%, 100% 0, 100% 92%, 0 100%);
}
.sr-prism__layer { position: absolute; inset: 0; margin: 0; transition: opacity 0.15s; }
.sr-prism__layer img { width: 100%; height: 100%; object-fit: cover; }
.sr-prism__layer--b { mix-blend-mode: screen; opacity: 0.5; }
.sr-prism__control { padding: clamp(2rem, 4vw, 3rem); display: flex; flex-direction: column; justify-content: center; }
.sr-prism__slider { display: flex; flex-direction: column; gap: 0.5rem; margin: 1.25rem 0; font-size: 0.78rem; color: var(--sr-steel); }
.sr-prism__slider input { width: 100%; accent-color: var(--sr-copper); }
.sr-prism.is-pulse .sr-prism__mask { animation: srPrismPulse 1.2s ease; }

@keyframes srPrismPulse {
  0%, 100% { filter: hue-rotate(0deg); }
  50% { filter: hue-rotate(25deg) saturate(1.3); }
}

/* Atelier Pin */
.sr-atelier {
  display: grid; grid-template-columns: 220px 1fr; min-height: 580px;
}
.sr-atelier__rail {
  border-right: 1px solid var(--sr-frame);
  padding: 1.5rem 0; display: flex; flex-direction: column; gap: 0.25rem;
}
.sr-atelier__step {
  background: none; border: none; text-align: left; cursor: pointer;
  padding: 0.85rem 1.25rem; color: var(--sr-text-muted);
  font-size: 0.82rem; border-left: 2px solid transparent;
  transition: all 0.25s;
}
.sr-atelier__step span { display: block; font-family: var(--sr-font-serif); color: var(--sr-steel); font-size: 0.9rem; }
.sr-atelier__step.is-active, .sr-atelier__step:hover {
  color: var(--sr-copper); border-left-color: var(--sr-copper);
  background: rgba(196, 165, 116, 0.05);
}
.sr-atelier__panes { position: relative; }
.sr-atelier__pane {
  display: none; grid-template-columns: 1.1fr 1fr; gap: 0; height: 100%;
  animation: srFadeIn 0.4s var(--sr-ease);
}
.sr-atelier__pane.is-active { display: grid; }
.sr-atelier__frame { overflow: hidden; min-height: 280px; }
.sr-atelier__frame img { width: 100%; height: 100%; object-fit: cover; }
.sr-atelier__text { padding: clamp(1.5rem, 3vw, 2.5rem); display: flex; flex-direction: column; justify-content: center; }

/* Metrics */
.sr-metrics { padding: clamp(2rem, 5vw, 4rem); text-align: center; }
.sr-metrics__row {
  list-style: none; margin: 2rem 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
}
.sr-metrics__row li {
  padding: 1.5rem 1rem; border: 1px solid var(--sr-frame);
  background: linear-gradient(180deg, var(--sr-bg-elev) 0%, var(--sr-bg) 100%);
}
.sr-metrics__row strong {
  display: block; font-family: var(--sr-font-serif); font-size: clamp(2rem, 4vw, 3rem);
  color: var(--sr-copper); font-weight: 600;
}
.sr-metrics__row span { font-size: 0.75rem; color: var(--sr-steel); letter-spacing: 0.06em; }
.sr-metrics__band {
  max-width: 560px; margin: 0 auto; padding-top: 1.5rem;
  border-top: 1px solid var(--sr-frame); color: var(--sr-text-muted); font-size: 0.92rem;
}

/* Voices */
.sr-voices__head { padding: 2rem var(--sr-window-gap) 0; max-width: 900px; }
.sr-voices__stack {
  position: relative; max-width: 900px; margin: 2rem auto 4rem;
  padding: 0 var(--sr-window-gap); min-height: 380px;
}
.sr-voices__card {
  position: relative; margin: 0 0 1rem;
  margin-left: var(--voice-offset, 0);
  padding: 1.5rem 1.75rem;
  background: var(--sr-bg-glass); backdrop-filter: blur(8px);
  border: 1px solid var(--sr-frame-light);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  transition: transform 0.35s var(--sr-ease);
}
.sr-voices__card:hover { transform: translateX(8px); border-color: var(--sr-copper-dim); }
.sr-voices__card footer { margin-top: 1rem; display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--sr-steel); }

/* Routes */
.sr-routes__head { padding: 2rem var(--sr-window-gap) 0; max-width: 1100px; margin: 0 auto; }
.sr-routes__grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;
  max-width: 1100px; margin: 2rem auto 4rem; padding: 0 var(--sr-window-gap);
}
.sr-routes__casement { border: 1px solid var(--sr-frame); overflow: hidden; transition: border-color 0.3s; }
.sr-routes__casement.is-open { border-color: var(--sr-copper-dim); }
.sr-routes__latch {
  width: 100%; background: var(--sr-bg-elev); border: none; cursor: pointer;
  padding: 1.25rem; text-align: left; color: var(--sr-text);
  display: grid; grid-template-columns: auto 1fr auto; gap: 1rem; align-items: center;
}
.sr-routes__latch:hover { background: rgba(196,165,116,0.05); }
.sr-routes__dist { font-family: var(--sr-font-serif); color: var(--sr-copper); font-size: 1.1rem; }
.sr-routes__time { font-size: 0.75rem; color: var(--sr-steel); }
.sr-routes__pane {
  max-height: 0; overflow: hidden; transition: max-height 0.45s var(--sr-ease);
}
.sr-routes__casement.is-open .sr-routes__pane { max-height: 400px; }
.sr-routes__pane figure { margin: 0; aspect-ratio: 16/9; overflow: hidden; }
.sr-routes__pane figure img { width: 100%; height: 100%; object-fit: cover; }
.sr-routes__pane p, .sr-routes__pane .sr-link { padding: 0 1.25rem; }
.sr-routes__pane .sr-link { display: inline-block; margin: 0 1.25rem 1.25rem; }

/* Bay Conversion */
.sr-bay {
  display: grid; grid-template-columns: 1fr 1fr; min-height: 480px;
}
.sr-bay__frame { padding: clamp(2rem, 4vw, 3.5rem); display: flex; flex-direction: column; justify-content: center; }
.sr-bay__points { list-style: none; margin: 1.25rem 0; padding: 0; }
.sr-bay__points li {
  padding: 0.5rem 0 0.5rem 1.25rem; position: relative;
  font-size: 0.9rem; color: var(--sr-text-muted);
}
.sr-bay__points li::before {
  content: ''; position: absolute; left: 0; top: 0.85rem;
  width: 6px; height: 6px; background: var(--sr-copper); transform: rotate(45deg);
}
.sr-bay__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1rem; }
.sr-bay__visual { margin: 0; overflow: hidden; border-left: 1px solid var(--sr-frame); }
.sr-bay__visual img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }

/* Reveal */
.sr-reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s var(--sr-ease), transform 0.7s var(--sr-ease);
}
.sr-reveal.is-visible { opacity: 1; transform: none; }

@keyframes srFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Inner Pages */
.sr-page { max-width: 1100px; margin: 0 auto; padding: 2rem clamp(1rem, 4vw, 2.5rem) 4rem; }
.sr-page-head { margin-bottom: 3rem; padding-bottom: 2rem; border-bottom: 1px solid var(--sr-frame); }

/* About */
.sr-about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-bottom: 3rem; align-items: center; }
.sr-about-story__frame { border: 1px solid var(--sr-frame); overflow: hidden; }
.sr-about-mission__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 1.5rem; }
.sr-about-mission__grid div { padding: 1.25rem; border: 1px solid var(--sr-frame); background: var(--sr-bg-elev); }
.sr-timeline__list { list-style: none; margin: 1.5rem 0 0; padding: 0; border-left: 1px solid var(--sr-frame); }
.sr-timeline__list li { display: grid; grid-template-columns: 80px 1fr; gap: 1.5rem; padding: 1.25rem 0 1.25rem 1.5rem; position: relative; }
.sr-timeline__list li::before {
  content: ''; position: absolute; left: -4px; top: 1.5rem;
  width: 7px; height: 7px; background: var(--sr-copper); border-radius: 50%;
}
.sr-timeline__list span { font-family: var(--sr-font-serif); font-size: 1.2rem; color: var(--sr-copper); }
.sr-about-team__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; }
.sr-about-team__grid article { padding: 1.25rem; border: 1px solid var(--sr-frame); }
.sr-about-access { margin-top: 3rem; padding: 2rem; border: 1px solid var(--sr-copper-dim); }

/* Shop */
.sr-shop-toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; align-items: center; }
.sr-shop-filters { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.sr-shop-filter {
  padding: 0.45rem 0.9rem; background: var(--sr-bg-elev); border: 1px solid var(--sr-frame);
  color: var(--sr-text-muted); font-size: 0.78rem; cursor: pointer; transition: all 0.25s;
}
.sr-shop-filter.is-active, .sr-shop-filter:hover { border-color: var(--sr-copper); color: var(--sr-copper); }
.sr-shop-sort select {
  background: var(--sr-bg-elev); border: 1px solid var(--sr-frame); color: var(--sr-text);
  padding: 0.45rem 0.75rem; font-size: 0.82rem;
}
.sr-shop-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.sr-shop-card { border: 1px solid var(--sr-frame); background: var(--sr-bg-elev); transition: border-color 0.3s, transform 0.3s; }
.sr-shop-card:hover { border-color: var(--sr-copper-dim); transform: translateY(-4px); }
.sr-shop-card.is-hidden { display: none; }
.sr-shop-card__frame { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.sr-shop-card__frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.sr-shop-card:hover .sr-shop-card__frame img { transform: scale(1.04); }
.sr-shop-card__badge {
  position: absolute; top: 0.75rem; left: 0.75rem;
  font-size: 0.65rem; letter-spacing: 0.08em; background: rgba(10,12,15,0.85);
  padding: 0.25rem 0.5rem; border: 1px solid var(--sr-copper-dim); color: var(--sr-copper);
}
.sr-shop-card__body { padding: 1.25rem; }
.sr-shop-card__spec { font-size: 0.82rem; color: var(--sr-steel); }
.sr-shop-card__price { font-family: var(--sr-font-serif); font-size: 1.25rem; color: var(--sr-copper); margin: 0.5rem 0 1rem; }
.sr-shop-card__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.sr-shop-cta { margin-top: 3rem; padding: 2rem; text-align: center; border: 1px dashed var(--sr-frame-light); }

/* FAQ */
.sr-faq-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.sr-faq-tab {
  padding: 0.5rem 1rem; background: var(--sr-bg-elev); border: 1px solid var(--sr-frame);
  color: var(--sr-text-muted); cursor: pointer; font-size: 0.82rem;
}
.sr-faq-tab.is-active { border-color: var(--sr-copper); color: var(--sr-copper); }
.sr-faq-panel { display: none; }
.sr-faq-panel.is-active { display: block; }
.sr-faq-item { border: 1px solid var(--sr-frame); margin-bottom: 0.5rem; background: var(--sr-bg-elev); }
.sr-faq-item summary {
  padding: 1rem 1.25rem; cursor: pointer; font-weight: 500;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.sr-faq-item summary::-webkit-details-marker { display: none; }
.sr-faq-item summary::after { content: '+'; color: var(--sr-copper); font-size: 1.2rem; }
.sr-faq-item[open] summary::after { content: '−'; }
.sr-faq-item__body { padding: 0 1.25rem 1.25rem; color: var(--sr-text-muted); font-size: 0.92rem; }
.sr-faq-cta { margin-top: 3rem; text-align: center; padding: 2.5rem; border: 1px solid var(--sr-frame); }

/* Contact */
.sr-contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.sr-contact-list { list-style: none; margin: 1.5rem 0; padding: 0; }
.sr-contact-list li { margin-bottom: 1rem; }
.sr-contact-map { aspect-ratio: 16/10; border: 1px solid var(--sr-frame); overflow: hidden; margin-top: 1.5rem; }
.sr-contact-map iframe { width: 100%; height: 100%; border: 0; filter: grayscale(0.6) contrast(1.1); }
.sr-field { margin-bottom: 1.25rem; }
.sr-field label { display: block; font-size: 0.82rem; margin-bottom: 0.35rem; color: var(--sr-text-muted); }
.sr-field label span { color: var(--sr-copper); }
.sr-field input, .sr-field select, .sr-field textarea {
  width: 100%; padding: 0.7rem 0.9rem;
  background: var(--sr-bg-elev); border: 1px solid var(--sr-frame);
  color: var(--sr-text); font-family: inherit; font-size: 0.9rem;
  transition: border-color 0.25s;
}
.sr-field input:focus, .sr-field select:focus, .sr-field textarea:focus {
  outline: none; border-color: var(--sr-copper);
}
.sr-check { display: flex; align-items: flex-start; gap: 0.5rem; font-size: 0.82rem; color: var(--sr-text-muted); margin-bottom: 1.25rem; cursor: pointer; }
.sr-form-note { font-size: 0.85rem; margin-top: 1rem; color: var(--sr-copper); }

/* Cart */
.sr-cart-layout { display: grid; grid-template-columns: 1fr 340px; gap: 2rem; align-items: start; }
.sr-cart-empty { text-align: center; padding: 3rem; border: 1px dashed var(--sr-frame); }
.sr-cart-list { list-style: none; margin: 0; padding: 0; }
.sr-cart-item {
  display: grid; grid-template-columns: 100px 1fr auto; gap: 1rem;
  padding: 1.25rem 0; border-bottom: 1px solid var(--sr-frame); align-items: center;
}
.sr-cart-item__img { aspect-ratio: 4/3; overflow: hidden; border: 1px solid var(--sr-frame); }
.sr-cart-item__img img { width: 100%; height: 100%; object-fit: cover; }
.sr-cart-item__name { font-family: var(--sr-font-serif); font-size: 1.05rem; margin: 0 0 0.25rem; }
.sr-cart-item__price { color: var(--sr-copper); font-size: 0.9rem; }
.sr-qty { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.5rem; }
.sr-qty button {
  width: 28px; height: 28px; background: var(--sr-bg-elev); border: 1px solid var(--sr-frame);
  color: var(--sr-text); cursor: pointer;
}
.sr-qty button:hover { border-color: var(--sr-copper); color: var(--sr-copper); }
.sr-cart-remove { background: none; border: none; color: var(--sr-steel); cursor: pointer; font-size: 0.75rem; }
.sr-cart-remove:hover { color: var(--sr-danger); }
.sr-cart-summary {
  position: sticky; top: calc(var(--sr-sill-h) + 1rem);
  padding: 1.5rem; border: 1px solid var(--sr-frame); background: var(--sr-bg-elev);
}
.sr-cart-coupon__row { display: flex; gap: 0.5rem; margin-top: 0.35rem; }
.sr-cart-coupon__row input { flex: 1; padding: 0.55rem; background: var(--sr-bg); border: 1px solid var(--sr-frame); color: var(--sr-text); }
.sr-cart-coupon__msg { font-size: 0.78rem; margin: 0.5rem 0 0; color: var(--sr-copper); }
.sr-cart-totals { margin: 1.5rem 0; }
.sr-cart-totals div { display: flex; justify-content: space-between; padding: 0.4rem 0; font-size: 0.88rem; }
.sr-cart-totals__grand { border-top: 1px solid var(--sr-frame); padding-top: 0.75rem !important; margin-top: 0.5rem; font-size: 1rem !important; }
.sr-cart-totals__grand dd { color: var(--sr-copper); font-family: var(--sr-font-serif); font-size: 1.3rem; }
.sr-cart-note { font-size: 0.75rem; color: var(--sr-steel); margin-bottom: 1.25rem; }
.sr-cart-checkout { width: 100%; margin-bottom: 0.75rem; }

/* Legal */
.sr-legal-updated { font-size: 0.82rem; color: var(--sr-steel); }
.sr-legal-body section { margin-bottom: 2.5rem; }
.sr-legal-body h2 { font-size: 1.35rem; margin-top: 0; padding-top: 0.5rem; border-top: 1px solid var(--sr-frame); }
.sr-legal-body h3 { font-size: 1rem; color: var(--sr-text-muted); }
.sr-legal-body ul { padding-left: 1.25rem; color: var(--sr-text-muted); }
.sr-legal-body li { margin-bottom: 0.35rem; }
.sr-legal-contact { font-style: normal; padding: 1.25rem; background: var(--sr-bg-elev); border-left: 3px solid var(--sr-copper); margin-top: 1rem; }

/* Search Overlay */
.sr-search {
  position: fixed; inset: 0; z-index: 950; display: flex; align-items: flex-start; justify-content: center;
  padding-top: 15vh; pointer-events: none; opacity: 0; transition: opacity 0.3s;
}
.sr-search.is-open { pointer-events: auto; opacity: 1; }
.sr-search__veil { position: absolute; inset: 0; background: rgba(10, 12, 15, 0.88); backdrop-filter: blur(6px); }
.sr-search__pane {
  position: relative; width: min(540px, 92vw); padding: 2rem;
  background: var(--sr-bg-elev); border: 1px solid var(--sr-frame-light);
  transform: translateY(-20px); transition: transform 0.35s var(--sr-ease);
}
.sr-search.is-open .sr-search__pane { transform: none; }
.sr-search__form { display: flex; gap: 0.5rem; margin: 1rem 0; }
.sr-search__form input { flex: 1; padding: 0.7rem; background: var(--sr-bg); border: 1px solid var(--sr-frame); color: var(--sr-text); }
.sr-search__hints { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; font-size: 0.78rem; color: var(--sr-steel); }
.sr-search__hints button { background: var(--sr-bg); border: 1px solid var(--sr-frame); color: var(--sr-text-muted); padding: 0.3rem 0.6rem; cursor: pointer; font-size: 0.75rem; }
.sr-search__hints button:hover { border-color: var(--sr-copper); color: var(--sr-copper); }

/* Drawer */
.sr-drawer {
  position: fixed; inset: 0; z-index: 940; pointer-events: none; opacity: 0; transition: opacity 0.3s;
}
.sr-drawer.is-open { pointer-events: auto; opacity: 1; }
.sr-drawer__veil { position: absolute; inset: 0; background: rgba(10,12,15,0.9); }
.sr-drawer__sheet {
  position: absolute; top: 0; right: 0; width: min(300px, 85vw); height: 100%;
  background: var(--sr-bg-elev); border-left: 1px solid var(--sr-frame);
  padding: 2rem 1.5rem; transform: translateX(100%); transition: transform 0.35s var(--sr-ease);
  display: flex; flex-direction: column; gap: 0.25rem;
}
.sr-drawer.is-open .sr-drawer__sheet { transform: none; }
.sr-drawer__sheet a { padding: 0.75rem 0; color: var(--sr-text-muted); border-bottom: 1px solid var(--sr-frame); font-size: 0.92rem; }
.sr-drawer__sheet a:hover { color: var(--sr-copper); }
.sr-drawer__foot { margin-top: auto; padding-top: 1.5rem; font-size: 0.82rem; color: var(--sr-steel); }
.sr-drawer__foot a { border: none; color: var(--sr-copper); display: block; margin-bottom: 0.5rem; }

/* Footer */
.sr-footer {
  border-top: 1px solid var(--sr-frame);
  background: var(--sr-bg-elev);
  padding: 3rem clamp(1rem, 4vw, 2.5rem);
  margin-right: 0;
}
body.page-home .sr-footer { margin-right: calc(-1 * var(--sr-rail-w)); padding-right: calc(clamp(1rem, 4vw, 2.5rem) + var(--sr-rail-w)); }
.sr-footer__grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem;
}
.sr-footer__mark { font-family: var(--sr-font-serif); font-size: 1.4rem; letter-spacing: 0.15em; color: var(--sr-copper); display: block; margin-bottom: 0.5rem; }
.sr-footer address { font-style: normal; font-size: 0.82rem; color: var(--sr-text-muted); line-height: 1.7; margin-top: 1rem; }
.sr-footer__col a { display: block; font-size: 0.82rem; color: var(--sr-text-muted); padding: 0.3rem 0; }
.sr-footer__col a:hover { color: var(--sr-copper); }
.sr-footer__hours p { font-size: 0.82rem; color: var(--sr-text-muted); margin: 0 0 0.5rem; }
.sr-footer__license, .sr-footer__copy { font-size: 0.72rem !important; color: var(--sr-steel) !important; }

/* Back to top */
.sr-top {
  position: fixed; bottom: 1.5rem; right: calc(1.5rem + var(--sr-rail-w));
  width: 40px; height: 40px; border: 1px solid var(--sr-frame-light);
  background: var(--sr-bg-glass); backdrop-filter: blur(8px);
  color: var(--sr-copper); cursor: pointer; opacity: 0; pointer-events: none;
  transition: opacity 0.3s, border-color 0.3s, transform 0.3s; z-index: 700;
}
body:not(.page-home) .sr-top { right: 1.5rem; }
.sr-top.is-visible { opacity: 1; pointer-events: auto; }
.sr-top:hover { border-color: var(--sr-copper); transform: translateY(-3px); }

/* Toast */
.sr-toast {
  position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--sr-bg-elev); border: 1px solid var(--sr-copper);
  color: var(--sr-text); padding: 0.75rem 1.5rem; font-size: 0.85rem;
  opacity: 0; pointer-events: none; transition: all 0.35s var(--sr-ease); z-index: 999;
}
.sr-toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
  body.sr-body.page-home { padding-right: 0; }
  body.page-home .sr-sill { right: 0; }
  .sr-window-rail { display: none; }
  body.page-home .sr-footer { margin-right: 0; padding-right: clamp(1rem, 4vw, 2.5rem); }
  .sr-top { right: 1.5rem !important; }
  .sr-window__frame--split, .sr-mullion, .sr-prism, .sr-bay, .sr-atelier { grid-template-columns: 1fr; }
  .sr-mullion__copy { border-right: none; border-bottom: 1px solid var(--sr-frame); }
  .sr-mullion__view { grid-template-columns: 1fr; }
  .sr-atelier { grid-template-columns: 1fr; }
  .sr-atelier__rail { flex-direction: row; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--sr-frame); padding: 0.75rem; }
  .sr-atelier__step { white-space: nowrap; border-left: none; border-bottom: 2px solid transparent; }
  .sr-atelier__step.is-active { border-bottom-color: var(--sr-copper); }
  .sr-atelier__pane.is-active { grid-template-columns: 1fr; }
  .sr-about-story, .sr-contact-grid, .sr-cart-layout { grid-template-columns: 1fr; }
  .sr-about-mission__grid, .sr-about-team__grid { grid-template-columns: 1fr; }
  .sr-metrics__row { grid-template-columns: repeat(2, 1fr); }
  .sr-routes__grid { grid-template-columns: 1fr; }
  .sr-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .sr-sill__nav, .sr-sill__loc { display: none; }
  .sr-sill__burger { display: flex; }
  .sr-horizon__detail { grid-template-columns: 1fr; }
  .sr-footer__grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sr-reveal { opacity: 1; transform: none; transition: none; }
  .sr-window__glass img { transform: none !important; }
}