/* Arris Façade Systems: homepage concept */
:root {
  --ink: #0c0f13;
  --ink-2: #13171d;
  --ink-3: #1c222a;
  --paper: #efeee9;
  --paper-2: #e5e3dc;
  --paper-3: #d8d5cc;
  --white: #fbfaf7;
  --blue: #2346e8;
  --blueprint: #1638c8;
  --warm: #f0bd84;
  --warm-2: #d98e4c;
  --mute-d: rgba(255, 255, 255, 0.62);
  --mute-l: rgba(12, 15, 19, 0.6);
  --line-d: rgba(255, 255, 255, 0.14);
  --line-l: rgba(12, 15, 19, 0.13);
  --f-sans: "Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --pad: clamp(20px, 4.4vw, 72px);
  --maxw: 1480px;
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
  --ease-io: cubic-bezier(0.7, 0, 0.2, 1);
  --r: 14px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.5 var(--f-sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, p, ol, ul, dl, dd, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 100; background: var(--white); padding: 10px 14px; border-radius: 8px; }
.skip:focus { top: 12px; }
.nowrap { white-space: nowrap; }
::selection { background: var(--blue); color: #fff; }

/* ------------------------------------------------------------ buttons & chips */
.btn {
  --bh: 52px;
  display: inline-flex; align-items: center; gap: 12px;
  height: var(--bh); padding: 0 24px;
  border-radius: 999px;
  font-weight: 500; font-size: 16px; letter-spacing: -0.005em;
  white-space: nowrap;
  transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), translate 0.35s var(--ease);
  position: relative; isolation: isolate; overflow: hidden;
}
.btn i { font-style: normal; display: inline-block; transition: translate 0.4s var(--ease); }
.btn:hover i { translate: 4px 0; }
.btn small { font: 500 11px var(--f-mono); letter-spacing: 0.06em; opacity: 0.6; }
.btn-sm { --bh: 40px; padding: 0 18px; font-size: 14.5px; }
.btn-lg { --bh: 60px; padding: 0 30px; font-size: 17px; }
.btn-accent { background: var(--white); color: var(--ink); }
.btn-accent::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, transparent 20%, rgba(240, 189, 132, 0.55) 45%, rgba(255, 255, 255, 0.9) 50%, transparent 70%);
  translate: -120% 0; transition: translate 0.9s var(--ease);
}
.btn-accent:hover::before { translate: 120% 0; }
.light .btn-accent, .btn-accent.on-light { background: var(--ink); color: var(--white); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.4); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }
.btn-light { background: var(--white); color: var(--ink); }
.btn-light:hover { background: #fff; }
.btn-dark { background: var(--ink); color: var(--white); }
.btn-dark:hover { background: var(--blue); }

.hf-label, .eyebrow, .sheet-tag, .tags li, .q-num, .sys-idx, .svc-n, .pill, .lab-drag, .form-note {
  font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
}
.sheet-tag { display: inline-flex; align-items: center; gap: 10px; color: var(--mute-l); }
.sheet-tag b { font-weight: 500; color: var(--ink); border: 1px solid currentColor; padding: 3px 7px 2px; border-radius: 3px; }
.dark .sheet-tag { color: var(--mute-d); }
.dark .sheet-tag b { color: #fff; }

/* ------------------------------------------------------------ nav */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  height: 76px; padding: 0 var(--pad);
  color: #fff;
  transition: background 0.5s var(--ease), height 0.5s var(--ease), backdrop-filter 0.5s;
}
.nav.is-solid { background: rgba(12, 15, 19, 0.88); backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4); height: 64px; }
.nav.is-hidden { translate: 0 -100%; }
.nav { transition: background 0.5s var(--ease), height 0.5s var(--ease), translate 0.6s var(--ease); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 26px; height: 26px; }
.brand-word { font-weight: 600; letter-spacing: 0.22em; font-size: 16px; }
.brand-sub { font: 400 12px var(--f-mono); letter-spacing: 0.06em; opacity: 0.6; text-transform: uppercase; padding-left: 10px; border-left: 1px solid rgba(255, 255, 255, 0.3); }
.nav-links { display: flex; gap: 30px; font-size: 15px; }
.nav-links a { position: relative; opacity: 0.86; transition: opacity 0.3s; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: currentColor; scale: 0 1; transform-origin: right; transition: scale 0.45s var(--ease); }
.nav-links a:hover { opacity: 1; }
.nav-links a:hover::after { scale: 1 1; transform-origin: left; }
.nav-ctas { display: flex; align-items: center; gap: 18px; }
.nav-dl { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; opacity: 0.86; }
.nav-dl svg { width: 16px; }
.nav-dl:hover { opacity: 1; }
.nav-menu { display: none; width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.35); position: relative; }
.nav-menu span { position: absolute; left: 12px; right: 12px; height: 1.5px; background: currentColor; transition: rotate 0.4s var(--ease), top 0.4s var(--ease); }
.nav-menu span:first-child { top: 16px; }
.nav-menu span:last-child { top: 23px; }
.nav-menu[aria-expanded="true"] span:first-child { top: 19.5px; rotate: 45deg; }
.nav-menu[aria-expanded="true"] span:last-child { top: 19.5px; rotate: -45deg; }
.menu-sheet {
  position: fixed; inset: 0; z-index: 45; background: var(--ink); color: #fff;
  display: flex; flex-direction: column; justify-content: center; gap: 6px; padding: 90px var(--pad) 40px;
}
.menu-sheet[hidden] { display: none; }
.menu-sheet a { font-size: clamp(32px, 9vw, 54px); letter-spacing: -0.03em; line-height: 1.15; border-bottom: 1px solid var(--line-d); padding: 8px 0; }

/* ------------------------------------------------------------ hero */
.hero { position: relative; height: 100svh; min-height: 700px; background: #05070d; color: #fff; overflow: hidden; }
.hero-media { position: absolute; inset: 0; }
.hero-poster, .hero-gl { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-poster { background: #05070d url("assets/hero/poster_desk.jpg") 56% 50% / cover no-repeat; }
.hero-gl { opacity: 0; transition: opacity 0.6s linear; }
.hero.gl-ready .hero-gl { opacity: 1; }
.hero.gl-ready .hero-poster { visibility: hidden; transition: visibility 0s 0.7s; }
.hero-copy {
  position: absolute; left: var(--pad); bottom: clamp(96px, 15vh, 170px); z-index: 2;
  width: min(38vw, 620px);
}
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, 0.78); margin-bottom: 26px; }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--warm); box-shadow: 0 0 0 4px rgba(240, 189, 132, 0.18); }
.hero-title {
  font-weight: 500; font-size: clamp(52px, 7.2vw, 122px); line-height: 0.93; letter-spacing: -0.042em;
  text-wrap: balance; margin-bottom: 30px;
}
.hero-lede { font-size: clamp(17px, 1.35vw, 20px); line-height: 1.5; color: rgba(255, 255, 255, 0.78); max-width: 34em; margin-bottom: 34px; text-wrap: pretty; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.hero-dl { display: inline-flex; gap: 8px; font-size: 15px; color: rgba(255, 255, 255, 0.75); border-bottom: 1px solid rgba(255, 255, 255, 0.3); padding-bottom: 3px; transition: color 0.3s, border-color 0.3s; }
.hero-dl:hover { color: #fff; border-color: #fff; }
.hero-dl i { font-style: normal; }

.hero-finish {
  position: absolute; right: var(--pad); bottom: 34px; z-index: 3;
  display: flex; align-items: center; gap: 14px;
  padding: 8px 16px 8px 18px; border-radius: 999px;
  background: rgba(10, 13, 20, 0.42); border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px) saturate(1.5); -webkit-backdrop-filter: blur(16px) saturate(1.5);
}
.hero-finish .hf-label { color: rgba(255, 255, 255, 0.6); font-size: 11px; }
.hf-chips { display: flex; gap: 8px; }
.hf-chip {
  --c: #bbb;
  width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.75), transparent 42%), linear-gradient(145deg, color-mix(in srgb, var(--c) 70%, #fff), var(--c) 55%, color-mix(in srgb, var(--c) 60%, #000));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
  position: relative; transition: scale 0.35s var(--ease);
}
.hf-chip::after { content: ""; position: absolute; inset: -5px; border-radius: 50%; border: 1.5px solid #fff; opacity: 0; scale: 0.7; transition: opacity 0.35s, scale 0.45s var(--ease); }
.hf-chip:hover { scale: 1.12; }
.hf-chip[aria-pressed="true"]::after { opacity: 1; scale: 1; }
.hf-name { font-size: 14px; min-width: 150px; color: #fff; }
.hero-hint {
  position: absolute; right: var(--pad); bottom: 98px; z-index: 2;
  display: flex; align-items: center; gap: 10px;
  font: 400 11.5px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: rgba(255, 255, 255, 0.86);
  padding: 8px 14px 8px 10px; border-radius: 999px;
  background: rgba(10, 13, 20, 0.42); border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transition: clip-path 0.6s var(--ease);
  clip-path: inset(0 0 0 0 round 999px);
}
.hero-hint svg { width: 18px; animation: hint-pulse 2.4s var(--ease) infinite; }
@keyframes hint-pulse { 0%, 100% { scale: 1; opacity: 0.7; } 50% { scale: 1.25; opacity: 1; } }
.hero.lens-used .hero-hint { clip-path: inset(0 0 0 100% round 999px); }
.hero-sheet { position: absolute; left: var(--pad); bottom: 30px; z-index: 2; color: rgba(255, 255, 255, 0.55); }
.hero-sheet b { color: #fff; }
.hero-lens-tag {
  position: absolute; left: 0; top: 0; z-index: 3; pointer-events: none;
  display: flex; gap: 8px; font: 500 10.5px var(--f-mono); letter-spacing: 0.1em;
  color: #fff; background: var(--blueprint); padding: 4px 8px; border-radius: 3px;
  opacity: 0; transition: opacity 0.25s;
}
.hero-lens-tag.on { opacity: 1; }
.hero-lens-tag span + span { opacity: 0.7; }
.hero.lensing { cursor: none; }

/* ------------------------------------------------------------ proof strip */
.proof { background: var(--ink); color: #fff; border-top: 1px solid var(--line-d); overflow: hidden; }
.proof-track { display: flex; align-items: baseline; gap: 16px; white-space: nowrap; padding: 22px 0; width: max-content; font-size: 15px; will-change: transform; }
.proof-track span { font: 500 11px var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--warm); margin: 0 18px 0 var(--pad); }
.proof-track b { font-weight: 500; }
.proof-track em { font-style: normal; color: var(--mute-d); margin-right: 26px; }
.proof-track em::after { content: "·"; margin-left: 26px; color: var(--line-d); }

/* ------------------------------------------------------------ sections */
.sec { position: relative; padding: clamp(96px, 12vw, 180px) var(--pad); }
.sec > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.sec-head { margin-bottom: clamp(44px, 5.5vw, 84px); }
.sec-head .sheet-tag { margin-bottom: 26px; }
.sec-head h2 {
  font-weight: 500; font-size: clamp(40px, 5.4vw, 88px); line-height: 0.98; letter-spacing: -0.038em;
  max-width: 14em; text-wrap: balance;
}
.sec-sub { margin-top: 22px; font-size: clamp(17px, 1.3vw, 20px); color: var(--mute-l); max-width: 36em; text-wrap: pretty; }
.dark { background: var(--ink); color: #fff; }
.dark .sec-sub { color: var(--mute-d); }
.sec-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; flex-wrap: wrap; }
.sec::before {
  /* the drawing set's grid: faint column rules */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background: linear-gradient(90deg, var(--line-l) 1px, transparent 1px) calc(var(--pad) - 0.5px) 0 / calc((100% - 2 * var(--pad)) / 6) 100%;
  -webkit-mask: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
  mask: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
}
.dark.sec::before { background-image: linear-gradient(90deg, var(--line-d) 1px, transparent 1px); opacity: 0.35; }
.sec-head, .sec > * { position: relative; }

/* split text */
.split-line { overflow: hidden; padding-bottom: 0.08em; margin-bottom: -0.08em; }
.split-line > * { display: inline-block; }

/* ------------------------------------------------------------ questions */
.questions { background: var(--paper); }
.q-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); }
.q-card {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  padding: 28px 26px 30px; min-height: 420px;
  border-right: 1px solid var(--line-l);
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}
.q-card:last-child { border-right: 0; }
.q-card:hover { background: var(--ink); color: #fff; }
.q-num { color: var(--mute-l); }
.q-card:hover .q-num { color: var(--warm); }
.q-art { width: 104px; height: 104px; margin: 8px 0 18px; }
.q-card h3 { font-weight: 500; font-size: clamp(24px, 2vw, 31px); line-height: 1.08; letter-spacing: -0.025em; text-wrap: balance; }
.q-card p { color: var(--mute-l); font-size: 16px; transition: color 0.5s; }
.q-card:hover p { color: var(--mute-d); }
.q-go { margin-top: auto; display: inline-flex; gap: 8px; font-weight: 500; font-size: 15px; }
.q-go i { font-style: normal; transition: translate 0.4s var(--ease); }
.q-card:hover .q-go i { translate: 6px 0; }
.q-card::after { content: ""; position: absolute; left: 0; top: -1px; height: 3px; width: 100%; background: var(--blue); scale: 0 1; transform-origin: left; transition: scale 0.6s var(--ease); }
.q-card:hover::after { scale: 1 1; }

/* line drawings that draw themselves */
.draw path, .draw rect, .draw circle { fill: none; stroke: currentColor; stroke-width: 1.6; vector-effect: non-scaling-stroke; stroke-linecap: square; }
.draw .thin { stroke-width: 1; opacity: 0.55; }
.draw .accent { stroke: var(--blue); stroke-width: 2; }
.q-card:hover .draw .accent { stroke: var(--warm); }

/* ------------------------------------------------------------ systems */
.systems { background: var(--paper); padding-top: 0; }
.sys-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(20px, 2.4vw, 36px); }
.sys-card { position: relative; display: flex; flex-direction: column; background: var(--white); border-radius: var(--r); overflow: hidden; }
.sys-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--paper-3); }
.sys-media img { width: 100%; height: 100%; object-fit: cover; scale: 1.02; transition: scale 1.4s var(--ease); }
.sys-card:hover .sys-media img { scale: 1.07; }
.sys-body { display: grid; grid-template-columns: auto 1fr; column-gap: 22px; padding: 28px 30px 32px; }
.sys-idx { grid-row: span 3; color: var(--mute-l); padding-top: 8px; }
.sys-body h3 { font-weight: 500; font-size: clamp(26px, 2.3vw, 36px); letter-spacing: -0.03em; line-height: 1.05; margin-bottom: 10px; }
.sys-body p { color: var(--mute-l); max-width: 30em; margin-bottom: 18px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { font-size: 11px; padding: 6px 10px 5px; border: 1px solid var(--line-l); border-radius: 999px; color: var(--mute-l); }
.sys-draw {
  position: absolute; right: 16px; top: 16px; width: 86px; height: 86px; padding: 12px; border-radius: 10px;
  color: #fff; background: rgba(12, 15, 19, 0.45); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  opacity: 0; translate: 0 -8px; transition: opacity 0.5s var(--ease), translate 0.5s var(--ease);
}
.sys-draw .accent { stroke: var(--warm); }
.sys-card:hover .sys-draw { opacity: 1; translate: 0 0; }

.rg { position: absolute; inset: 0; display: grid; grid-template-columns: repeat(var(--cols, 5), 1fr); grid-template-rows: repeat(var(--rows, 3), 1fr); pointer-events: none; z-index: 2; }
.rg i { background: var(--rg-bg, var(--paper)); transform-origin: 50% 0; border-right: 1px solid rgba(12, 15, 19, 0.06); }

.svc { margin-top: clamp(80px, 9vw, 140px); display: grid; grid-template-columns: minmax(240px, 0.8fr) 2.2fr; gap: 50px; }
.svc-head .sheet-tag { margin-bottom: 20px; }
.svc-title { font-weight: 500; font-size: clamp(30px, 2.8vw, 44px); letter-spacing: -0.03em; line-height: 1.04; margin-bottom: 14px; }
.svc-note { color: var(--mute-l); }
.svc-list { border-top: 1px solid var(--ink); }
.svc-item {
  display: grid; grid-template-columns: 60px 1fr 44px; gap: 20px; align-items: start;
  padding: 24px 0; border-bottom: 1px solid var(--line-l); position: relative;
}
.svc-item::before { content: ""; position: absolute; inset: 0 -18px; background: var(--white); border-radius: 10px; opacity: 0; scale: 0.98; transition: opacity 0.4s var(--ease), scale 0.5s var(--ease); z-index: -1; }
.svc-item:hover::before { opacity: 1; scale: 1; }
.svc-n { color: var(--mute-l); padding-top: 6px; }
.svc-item h4 { font-weight: 500; font-size: 22px; letter-spacing: -0.02em; margin-bottom: 4px; }
.svc-item p { color: var(--mute-l); max-width: 44em; }
.svc-ic { width: 40px; height: 40px; fill: none; stroke: currentColor; stroke-width: 1.3; opacity: 0.5; transition: opacity 0.4s, color 0.4s, rotate 0.6s var(--ease); }
.svc-item:hover .svc-ic { opacity: 1; color: var(--blue); rotate: -6deg; }

/* ------------------------------------------------------------ design lab */
.lab { background: var(--paper-2); }
.lab-wrap { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(24px, 3.4vw, 56px); align-items: stretch; }
.lab-stage {
  position: relative; min-height: 640px; border-radius: var(--r); overflow: hidden;
  background:
    linear-gradient(var(--line-l) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, var(--line-l) 1px, transparent 1px) 0 0 / 40px 40px,
    radial-gradient(120% 90% at 50% 20%, #f7f6f2, #e2dfd6);
  cursor: grab; touch-action: pan-y;
}
.lab-stage:active { cursor: grabbing; }
.lab-gl { position: absolute; inset: 0; width: 100%; height: 100%; }
.lab-dim { position: absolute; left: 22px; top: 22px; font: 500 11px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-l); display: flex; gap: 10px; align-items: center; }
.lab-dim::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.lab-drag { position: absolute; right: 22px; bottom: 20px; color: var(--mute-l); }
.lab-panel { display: flex; flex-direction: column; gap: 28px; padding: 8px 0; }
.lab-shapes { display: flex; flex-wrap: wrap; gap: 8px; }
.lab-shapes button {
  display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 16px 0 12px; border-radius: 999px;
  border: 1px solid var(--line-l); background: transparent; font-size: 15px; transition: background 0.35s var(--ease), color 0.35s, border-color 0.35s;
}
.lab-shapes svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.lab-shapes button:hover { border-color: var(--ink); }
.lab-shapes button[aria-selected="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.lab-answer { border-top: 1px solid var(--ink); padding-top: 26px; min-height: 330px; }
.lab-verdict { display: flex; align-items: center; gap: 12px; color: var(--mute-l); font-size: 15px; margin-bottom: 16px; }
.pill { display: inline-flex; padding: 5px 10px 4px; border-radius: 999px; font-size: 11px; }
.pill-yes { background: #d6f0dc; color: #125a2a; }
.pill-eng { background: #dfe6ff; color: #1b35b8; }
.pill-custom { background: #fbe6cf; color: #7a3d0c; }
.lab-answer h3 { font-weight: 500; font-size: clamp(26px, 2.2vw, 34px); letter-spacing: -0.028em; line-height: 1.08; margin-bottom: 14px; text-wrap: balance; }
.lab-answer > p { color: var(--mute-l); margin-bottom: 24px; max-width: 34em; }
.lab-limits { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line-l); border: 1px solid var(--line-l); border-radius: 10px; overflow: hidden; }
.lab-limits div { background: var(--paper-2); padding: 14px 16px; }
.lab-limits dt { font: 400 11px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-l); margin-bottom: 4px; }
.lab-limits dd { font-weight: 500; font-size: 17px; letter-spacing: -0.01em; }
.lab-finish { display: flex; align-items: center; gap: 14px; }
.lab-finish .hf-label { color: var(--mute-l); }
.lab-finish .hf-chip { box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.18); }
.lab-finish .hf-chip::after { border-color: var(--ink); }
.lab-panel .btn { align-self: flex-start; }

/* ------------------------------------------------------------ detail (blueprint) */
.detail { background: var(--ink); color: #fff; }
.detail .sheet-tag { color: var(--mute-d); }
.detail .sheet-tag b { color: #fff; }
.detail .sec-sub { color: var(--mute-d); }
.detail-wrap { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(28px, 4vw, 70px); align-items: start; }
.detail-sheet {
  position: sticky; top: 90px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px) 0 0 / 24px 24px,
    var(--blueprint);
  border-radius: var(--r); padding: 18px 18px 0; overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(22, 56, 200, 0.6);
}
.section-svg { width: 100%; height: auto; max-height: 76vh; margin: 0 auto; }
.section-svg .h { stroke: rgba(255, 255, 255, 0.55); stroke-width: 1; fill: none; }
.section-svg .cut { fill: rgba(255, 255, 255, 0.1); stroke: #fff; stroke-width: 2.2; stroke-linejoin: round; }
.section-svg .conc { stroke-width: 2.4; fill: url(#hatch-conc); }
.section-svg .thin { fill: none; stroke: rgba(255, 255, 255, 0.7); stroke-width: 1; }
.section-svg .proj { fill: none; stroke: rgba(255, 255, 255, 0.45); stroke-width: 1; stroke-dasharray: 8 6; }
.section-svg .glass { fill: rgba(170, 215, 255, 0.22); stroke: #fff; stroke-width: 1.3; }
.section-svg .spacer { fill: rgba(255, 255, 255, 0.35); stroke: #fff; stroke-width: 1; }
.section-svg .tb { fill: none; stroke: var(--warm); stroke-width: 1.6; }
.section-svg .steel { stroke: #fff; stroke-width: 2; fill: url(#hatch-steel); }
.section-svg .bolt { fill: var(--blueprint); stroke: #fff; stroke-width: 1.6; }
.section-svg .ins { stroke: rgba(255, 255, 255, 0.7); stroke-width: 1.2; fill: url(#hatch-ins); }
.section-svg .seal { stroke: var(--warm); stroke-width: 3; fill: none; }
.section-svg .gasket { stroke: #111; stroke-width: 5; stroke-linecap: round; }
.section-svg .water { fill: none; stroke: #8fd3ff; stroke-width: 2.2; stroke-dasharray: 5 6; }
.section-svg .water-arrow { fill: none; stroke: #8fd3ff; stroke-width: 2.2; }
.section-svg .dim path { stroke: rgba(255, 255, 255, 0.75); stroke-width: 1; fill: none; }
.section-svg .tk { stroke: #fff; stroke-width: 1.4; }
.section-svg text { font: 500 12px var(--f-mono); letter-spacing: 0.06em; fill: rgba(255, 255, 255, 0.85); }
.section-svg .label { font-size: 11px; fill: rgba(255, 255, 255, 0.55); letter-spacing: 0.14em; }
.section-svg .co path { stroke: rgba(255, 255, 255, 0.8); stroke-width: 1; fill: none; }
.section-svg .co circle { fill: var(--blueprint); stroke: #fff; stroke-width: 1.4; transition: fill 0.3s; }
.section-svg .co text { text-anchor: middle; fill: #fff; font-size: 13px; }
.section-svg .co { cursor: pointer; }
.section-svg .co.on circle { fill: var(--warm); stroke: var(--warm); }
.section-svg .co.on text { fill: var(--ink); }
.section-svg .part { transition: opacity 0.35s var(--ease), filter 0.35s; }
.section-svg.has-focus .part:not(.on) { opacity: 0.55; }
.section-svg .part.on { filter: drop-shadow(0 0 6px rgba(240, 189, 132, 0.9)); }
.section-svg .part.on .cut, .section-svg .part.on .steel, .section-svg .part.on .glass { stroke: var(--warm); }
.title-block { display: grid; grid-template-columns: 2fr 1fr 1fr; border-top: 1.5px solid rgba(255, 255, 255, 0.7); margin: 10px -18px 0; }
.title-block div { padding: 10px 16px; border-right: 1px solid rgba(255, 255, 255, 0.35); display: grid; gap: 2px; }
.title-block div:last-child { border-right: 0; }
.title-block span { font: 400 10px var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255, 255, 255, 0.6); }
.title-block b { font-weight: 500; font-size: 14px; }
.parts { border-top: 1px solid var(--line-d); counter-reset: p; }
.parts li {
  display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 18px 12px 18px 0; border-bottom: 1px solid var(--line-d);
  cursor: default; position: relative; transition: background 0.35s var(--ease);
}
.parts li::before { content: ""; position: absolute; left: -14px; top: 0; bottom: 0; width: 2px; background: var(--warm); scale: 1 0; transition: scale 0.4s var(--ease); }
.parts li.on::before { scale: 1 1; }
.pn { width: 30px; height: 30px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.5); display: grid; place-items: center; font: 500 13px var(--f-mono); transition: background 0.3s, color 0.3s, border-color 0.3s; }
.parts li.on .pn { background: var(--warm); color: var(--ink); border-color: var(--warm); }
.parts h4 { font-weight: 500; font-size: 19px; letter-spacing: -0.015em; margin-bottom: 3px; }
.parts p { color: var(--mute-d); font-size: 15.5px; max-height: 0; overflow: hidden; opacity: 0; transition: max-height 0.5s var(--ease), opacity 0.4s, margin 0.4s; }
.parts li.on p { max-height: 120px; opacity: 1; margin-bottom: 10px; }
.who { display: inline-flex; align-items: center; gap: 7px; font: 400 11px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute-d); }
.who::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--warm); }
.who-gc::before { background: transparent; border: 1.5px solid #8fd3ff; }
.detail-actions { margin-top: 30px; }
.detail .btn-dark { background: #fff; color: var(--ink); }
.detail .btn-dark:hover { background: var(--warm); }

/* ------------------------------------------------------------ responsibilities */
.resp { background: var(--paper); }
.resp-toggle { position: relative; display: inline-flex; padding: 5px; border-radius: 999px; background: var(--paper-2); margin: 0 0 36px; border: 1px solid var(--line-l); }
.resp-toggle button { position: relative; z-index: 1; height: 44px; padding: 0 24px; border-radius: 999px; font-weight: 500; font-size: 15.5px; color: var(--mute-l); transition: color 0.4s; }
.resp-toggle button[aria-selected="true"] { color: #fff; }
.rt-thumb { position: absolute; top: 5px; bottom: 5px; left: 5px; border-radius: 999px; background: var(--ink); transition: left 0.55s var(--ease), width 0.55s var(--ease); }
.resp-table { border-top: 1px solid var(--ink); }
.rt-head, .rt-row { display: grid; grid-template-columns: minmax(200px, 1.5fr) repeat(3, 1fr); align-items: center; }
.rt-head { font: 500 12px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-l); padding: 16px 0; border-bottom: 1px solid var(--line-l); }
.rt-head span:not(:first-child), .rt-row .rt-cell { text-align: center; }
.rt-row { border-bottom: 1px solid var(--line-l); min-height: 60px; }
.rt-task { font-size: 17px; padding: 14px 0; }
.rt-task small { display: block; color: var(--mute-l); font-size: 13.5px; }
.rt-cell { position: relative; height: 100%; display: grid; place-items: center; }
.rt-cell + .rt-cell { border-left: 1px dashed var(--line-l); }
.rt-dot { width: 16px; height: 16px; border-radius: 50%; background: var(--ink); box-shadow: 0 0 0 5px rgba(12, 15, 19, 0.07); }
.rt-dot.us { background: var(--blue); box-shadow: 0 0 0 5px rgba(35, 70, 232, 0.14); }
.rt-dot.part { background: transparent; border: 2px solid var(--ink); }
.rt-row.changed { background: linear-gradient(90deg, rgba(35, 70, 232, 0.06), transparent 70%); }
.resp-note { margin-top: 26px; color: var(--mute-l); font-size: 16px; display: flex; gap: 10px; align-items: center; }
.resp-note::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--blue); flex: none; }

/* ------------------------------------------------------------ schedule */
.schedule { background: var(--ink); color: #fff; position: relative; }
.sch-pin { height: 100svh; min-height: 680px; overflow: hidden; padding: 110px var(--pad) 48px; display: grid; grid-template-rows: auto 1fr; gap: 30px; max-width: calc(var(--maxw) + 2 * var(--pad)); margin: 0 auto; }
.sch-head { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: end; }
.sch-head .sheet-tag { grid-column: 1 / -1; color: var(--mute-d); }
.sch-head .sheet-tag b { color: #fff; }
.sch-head h2 { font-weight: 500; font-size: clamp(34px, 4.2vw, 68px); line-height: 1; letter-spacing: -0.035em; }
.sch-head .sec-sub { color: var(--mute-d); margin: 0; }
.sch-body { display: grid; grid-template-columns: minmax(260px, 0.9fr) 1.6fr; gap: clamp(30px, 5vw, 80px); min-height: 0; }
.sch-elev { position: relative; min-height: 0; display: flex; flex-direction: column; gap: 14px; }
.sch-elev svg { flex: 1; min-height: 0; width: 100%; }
.sch-legend { display: flex; gap: 16px; flex-wrap: wrap; font: 400 11px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute-d); }
.lg { display: inline-flex; align-items: center; gap: 7px; }
.lg::before { content: ""; width: 12px; height: 12px; border-radius: 2px; }
.lg-draw::before { border: 1px solid rgba(255, 255, 255, 0.6); }
.lg-ok::before { background: repeating-linear-gradient(45deg, #5b7cff 0 2px, transparent 2px 4px); border: 1px solid #5b7cff; }
.lg-fab::before { background: #6c7480; }
.lg-on::before { background: linear-gradient(160deg, #9ec8ff, #f0bd84); }
.sch-steps { position: relative; display: flex; flex-direction: column; min-height: 0; }
.sch-week { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; }
.sch-week span { font: 400 12px var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--mute-d); }
.sch-week b { font-weight: 500; font-size: clamp(56px, 6vw, 96px); letter-spacing: -0.04em; line-height: 0.9; font-variant-numeric: tabular-nums; min-width: 2ch; }
.sch-steps ol { display: grid; gap: 2px; }
.sch-steps li {
  display: grid; grid-template-columns: 1fr auto; column-gap: 20px; padding: 11px 0 11px 18px; border-left: 2px solid var(--line-d);
  opacity: 0.38; transition: opacity 0.4s var(--ease), border-color 0.4s;
}
.sch-steps li b { font-weight: 500; font-size: clamp(18px, 1.5vw, 22px); letter-spacing: -0.015em; }
.sch-steps li span { font: 400 12px var(--f-mono); color: var(--mute-d); align-self: center; }
.sch-steps li p { grid-column: 1 / -1; color: var(--mute-d); font-size: 15px; max-height: 0; overflow: hidden; transition: max-height 0.5s var(--ease), margin 0.4s; }
.sch-steps li.done { opacity: 0.7; border-color: rgba(255, 255, 255, 0.4); }
.sch-steps li.now { opacity: 1; border-color: var(--warm); }
.sch-steps li.now p { max-height: 60px; margin-top: 4px; }
.sch-bar { margin-top: auto; height: 2px; background: var(--line-d); position: relative; }
.sch-bar i { position: absolute; inset: 0; background: linear-gradient(90deg, var(--blue), var(--warm)); transform-origin: left; scale: 0 1; }

/* ------------------------------------------------------------ projects */
.projects { background: var(--paper); }
.p-filters { display: flex; flex-wrap: wrap; gap: 6px; }
.p-filters button, .c-fit button, .l-row button, .chips button {
  height: 38px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line-l); font-size: 14.5px;
  transition: background 0.3s var(--ease), color 0.3s, border-color 0.3s;
}
.p-filters button:hover, .c-fit button:hover, .l-row button:hover, .chips button:hover { border-color: var(--ink); }
.p-filters button[aria-selected="true"], .c-fit button[aria-pressed="true"], .l-row button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.p-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(16px, 2vw, 28px); grid-auto-flow: dense; }
.p-card { grid-column: span 4; position: relative; cursor: pointer; }
.p-card.big { grid-column: span 8; grid-row: span 2; }
.p-card.wide { grid-column: span 6; }
.p-card[hidden] { display: none; }
.p-img { position: relative; overflow: hidden; border-radius: var(--r); aspect-ratio: 4 / 3; background: var(--paper-3); }
.p-card.big .p-img { aspect-ratio: auto; height: calc(100% - 78px); min-height: 420px; }
.p-img img { width: 100%; height: 100%; object-fit: cover; transition: scale 1.2s var(--ease), filter 0.6s; }
.p-card:hover .p-img img { scale: 1.05; }
.p-over {
  position: absolute; left: 14px; right: 14px; bottom: 14px; z-index: 2;
  display: flex; flex-wrap: wrap; gap: 6px;
  opacity: 0; translate: 0 10px; transition: opacity 0.45s var(--ease), translate 0.45s var(--ease);
}
.p-over span { font: 500 11px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: #fff; background: rgba(12, 15, 19, 0.55); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 6px 10px 5px; border-radius: 999px; }
.p-card:hover .p-over { opacity: 1; translate: 0 0; }
.p-meta { display: flex; justify-content: space-between; gap: 16px; padding: 14px 2px 0; align-items: baseline; }
.p-meta h3 { font-weight: 500; font-size: 20px; letter-spacing: -0.02em; }
.p-card.big .p-meta h3 { font-size: 26px; }
.p-meta span { font: 400 12px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute-l); white-space: nowrap; }
.p-view {
  width: min(1200px, 94vw); max-height: 92vh; padding: 0; border: 0; border-radius: 18px; background: var(--paper); color: var(--ink);
  display: grid; grid-template-columns: 1.5fr 1fr; overflow: hidden;
}
.p-view:not([open]) { display: none; }
.p-view::backdrop { background: rgba(8, 10, 14, 0.72); backdrop-filter: blur(6px); }
.pv-media { position: relative; min-height: 360px; background: #111; }
.pv-media img { width: 100%; height: 100%; object-fit: cover; }
.pv-detail { position: absolute; right: 16px; bottom: 16px; width: 38% !important; height: auto !important; aspect-ratio: 3 / 2; border-radius: 10px; border: 3px solid var(--paper); box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5); }
.pv-body { padding: 34px 32px; display: flex; flex-direction: column; gap: 16px; overflow: auto; }
.pv-body h3 { font-weight: 500; font-size: 34px; letter-spacing: -0.03em; line-height: 1.02; }
.pv-body > p { color: var(--mute-l); }
.pv-body dl { display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; border-top: 1px solid var(--line-l); padding-top: 18px; margin-bottom: 8px; }
.pv-body dt { font: 400 11px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-l); padding-top: 3px; }
.pv-body dd { font-size: 15.5px; }
.pv-body .btn { align-self: flex-start; margin-top: auto; }
.pv-close { position: absolute; right: 14px; top: 12px; z-index: 3; width: 40px; height: 40px; border-radius: 50%; background: var(--paper); font-size: 24px; line-height: 1; }

/* ------------------------------------------------------------ compare */
.compare { background: var(--paper-2); }
.c-fit { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.c-fit .hf-label { color: var(--mute-l); margin-right: 6px; }
.c-scroll { overflow-x: auto; border-top: 1px solid var(--ink); -webkit-overflow-scrolling: touch; }
.c-table { width: 100%; min-width: 900px; border-collapse: collapse; }
.c-table th, .c-table td { text-align: left; vertical-align: top; padding: 18px 16px; border-bottom: 1px solid var(--line-l); position: relative; transition: background 0.4s var(--ease), opacity 0.4s; }
.c-table thead th { padding-top: 22px; font-weight: 500; font-size: 19px; letter-spacing: -0.015em; vertical-align: bottom; }
.c-table thead th svg { width: 44px; height: 44px; margin-bottom: 14px; fill: none; stroke: currentColor; stroke-width: 1.3; }
.c-table thead th small { display: block; font: 400 11px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute-l); margin-top: 4px; }
.c-table tbody th { font: 400 11.5px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-l); width: 170px; padding-top: 21px; }
.c-table td { font-size: 15.5px; }
.c-table td b { font-weight: 500; display: block; font-size: 17px; }
.c-table td .bar { display: block; height: 4px; border-radius: 2px; background: var(--line-l); margin-top: 10px; overflow: hidden; }
.c-table td .bar i { display: block; height: 100%; background: var(--ink); border-radius: 2px; transform-origin: left; }
.c-table .col-on { background: var(--white); }
.c-table .col-on .bar i { background: var(--blue); }
.c-table.fitting td:not(.col-on), .c-table.fitting thead th:not(.col-on):not(:first-child) { opacity: 0.4; }
.c-table thead th.col-on::before { content: "Best fit"; position: absolute; top: 0; left: 16px; font: 500 10.5px var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: #fff; background: var(--blue); padding: 4px 8px; border-radius: 0 0 5px 5px; }
.c-foot { margin-top: 20px; color: var(--mute-l); font-size: 14.5px; }

/* ------------------------------------------------------------ finishes */
.finishes { background: var(--paper); }
.f-wrap { display: grid; grid-template-columns: 1fr 380px; gap: clamp(24px, 3vw, 50px); align-items: start; }
.f-group + .f-group { margin-top: 44px; }
.f-group h3 { display: flex; justify-content: space-between; align-items: baseline; font-weight: 500; font-size: 22px; letter-spacing: -0.02em; border-bottom: 1px solid var(--ink); padding-bottom: 12px; margin-bottom: 22px; }
.f-group h3 span { font: 400 12px var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute-l); }
.f-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); gap: 18px; }
.swatch { display: flex; flex-direction: column; gap: 10px; text-align: left; perspective: 700px; }
.chip {
  --c: #aaa; --mx: 50%; --my: 30%; --rx: 0deg; --ry: 0deg;
  position: relative; aspect-ratio: 3 / 4; border-radius: 10px; transform-style: preserve-3d;
  background:
    radial-gradient(90% 60% at var(--mx) var(--my), rgba(255, 255, 255, 0.55), transparent 60%),
    linear-gradient(160deg, color-mix(in srgb, var(--c) 78%, #fff) 0%, var(--c) 45%, color-mix(in srgb, var(--c) 72%, #000) 100%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 18px 30px -18px rgba(12, 15, 19, 0.55), 0 2px 5px rgba(12, 15, 19, 0.15);
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform 0.5s var(--ease), box-shadow 0.4s;
}
.chip.brushed::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; opacity: 0.35; mix-blend-mode: overlay;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.35) 0 1px, rgba(0, 0, 0, 0.12) 1px 2px, transparent 2px 4px);
}
.chip.mica::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; opacity: 0.5; mix-blend-mode: screen;
  background-image: radial-gradient(rgba(255, 255, 255, 0.8) 0.6px, transparent 1px);
  background-size: 5px 5px;
}
.chip::after { content: ""; position: absolute; left: 50%; top: 12px; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; background: var(--paper); box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.45); }
.swatch:hover .chip { box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 26px 40px -18px rgba(12, 15, 19, 0.6), 0 2px 5px rgba(12, 15, 19, 0.15); }
.chip .tick { position: absolute; right: 8px; bottom: 8px; width: 26px; height: 26px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; font-size: 14px; scale: 0; transition: scale 0.4s var(--ease); }
.swatch[aria-pressed="true"] .tick { scale: 1; }
.swatch[aria-pressed="true"] .chip { outline: 2px solid var(--blue); outline-offset: 3px; }
.sw-name { font-weight: 500; font-size: 15px; line-height: 1.2; }
.sw-code { font: 400 11px var(--f-mono); letter-spacing: 0.04em; color: var(--mute-l); margin-top: 2px; }
.f-box { position: sticky; top: 90px; background: var(--ink); color: #fff; border-radius: 18px; padding: 26px; display: flex; flex-direction: column; gap: 20px; }
.fb-top { display: flex; justify-content: space-between; align-items: baseline; }
.fb-top h3 { font-weight: 500; font-size: 22px; letter-spacing: -0.02em; }
.fb-count { font: 400 13px var(--f-mono); color: var(--mute-d); }
.fb-count b { color: #fff; font-weight: 500; }
.fb-tray { min-height: 92px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; padding: 12px; border: 1px dashed rgba(255, 255, 255, 0.25); border-radius: 12px; align-items: center; }
.fb-empty { grid-column: 1 / -1; text-align: center; color: var(--mute-d); font-size: 14.5px; }
.fb-tray .mini { aspect-ratio: 3 / 4; border-radius: 5px; position: relative; box-shadow: 0 6px 12px -6px rgba(0, 0, 0, 0.7); }
.fb-tray .mini::after { content: ""; position: absolute; left: 50%; top: 5px; width: 5px; height: 5px; margin-left: -2.5px; border-radius: 50%; background: var(--ink); }
.fb-form, .k-you { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fb-form .full { grid-column: 1 / -1; }
.fb-form label span, .field span { display: block; font: 400 11px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-d); margin-bottom: 6px; }
.fb-form input, .field input {
  width: 100%; height: 46px; padding: 0 14px; border-radius: 10px; border: 1px solid rgba(255, 255, 255, 0.18); background: rgba(255, 255, 255, 0.06);
  color: #fff; font: inherit; font-size: 15.5px; transition: border-color 0.3s, background 0.3s;
}
.fb-form input:focus, .field input:focus { outline: none; border-color: var(--warm); background: rgba(255, 255, 255, 0.1); }
.fb-form .btn { justify-content: center; }
.form-note { color: var(--mute-d); font-size: 10.5px; }
.fly-chip { position: fixed; z-index: 60; border-radius: 8px; pointer-events: none; box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5); }

/* ------------------------------------------------------------ library */
.library { background: var(--paper-2); }
.l-search { display: flex; align-items: center; gap: 12px; width: min(440px, 100%); height: 54px; padding: 0 20px; border-radius: 999px; background: var(--white); border: 1px solid var(--line-l); transition: border-color 0.3s, box-shadow 0.3s; }
.l-search:focus-within { border-color: var(--ink); box-shadow: 0 10px 30px -18px rgba(12, 15, 19, 0.5); }
.l-search svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; opacity: 0.6; }
.l-search input { flex: 1; border: 0; background: none; font: inherit; font-size: 16px; outline: none; }
.l-filters { display: grid; gap: 10px; margin-bottom: 26px; }
.l-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.l-row .hf-label { width: 90px; color: var(--mute-l); }
.l-list { border-top: 1px solid var(--ink); }
.l-item {
  display: grid; grid-template-columns: 64px 1fr 190px 90px 130px; gap: 20px; align-items: center;
  padding: 16px 0; border-bottom: 1px solid var(--line-l); position: relative;
}
.l-item::before { content: ""; position: absolute; inset: 0 -16px; border-radius: 10px; background: var(--white); z-index: -1; opacity: 0; transition: opacity 0.3s; }
.l-item:hover::before { opacity: 1; }
.l-item[hidden] { display: none; }
.l-badge { width: 52px; height: 60px; border-radius: 4px 14px 4px 4px; display: grid; place-items: end start; padding: 8px; font: 500 11px var(--f-mono); letter-spacing: 0.04em; color: #fff; background: var(--ink); }
.l-badge.dwg { background: #b8412a; }
.l-badge.rvt { background: #1d6fd6; }
.l-badge.docx { background: #2d5a9e; }
.l-badge.pdf { background: #33373e; }
.l-badge.ifc { background: #2f7d57; }
.l-title b { display: block; font-weight: 500; font-size: 17px; letter-spacing: -0.01em; }
.l-title span { color: var(--mute-l); font-size: 14.5px; }
.l-sys, .l-size { font: 400 12px var(--f-mono); letter-spacing: 0.04em; color: var(--mute-l); text-transform: uppercase; }
.l-dl { justify-self: end; display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--ink); font-size: 14.5px; font-weight: 500; transition: background 0.3s, color 0.3s; }
.l-dl:hover { background: var(--ink); color: #fff; }
.l-dl svg { width: 14px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.l-empty { padding: 40px 0; color: var(--mute-l); text-align: center; }
.l-help { margin-top: 50px; display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; padding: 30px 34px; border-radius: 18px; background: var(--white); }
.l-help h3 { font-weight: 500; font-size: 26px; letter-spacing: -0.025em; margin-bottom: 4px; }
.l-help p { color: var(--mute-l); max-width: 40em; }
mark { background: rgba(240, 189, 132, 0.6); color: inherit; border-radius: 2px; }

/* ------------------------------------------------------------ contact */
.contact { background: var(--ink); color: #fff; }
.contact .sheet-tag { color: var(--mute-d); }
.contact .sheet-tag b { color: #fff; }
.contact .sec-sub { color: var(--mute-d); }
.k-wrap { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(30px, 5vw, 90px); align-items: start; }
.k-form { display: grid; gap: 30px; }
.k-form fieldset { border: 0; margin: 0; padding: 0 0 30px; border-bottom: 1px solid var(--line-d); min-width: 0; }
.k-form legend { font-weight: 500; font-size: 21px; letter-spacing: -0.015em; margin-bottom: 16px; padding: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button { border-color: rgba(255, 255, 255, 0.22); color: rgba(255, 255, 255, 0.85); }
.chips button:hover { border-color: #fff; }
.chips button[aria-pressed="true"] { background: #fff; color: var(--ink); border-color: #fff; }
.range { display: flex; align-items: center; gap: 18px; }
.range input { flex: 1; appearance: none; -webkit-appearance: none; height: 2px; background: linear-gradient(90deg, var(--warm) var(--p, 38%), rgba(255, 255, 255, 0.2) var(--p, 38%)); outline: none; }
.range input::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 6px rgba(240, 189, 132, 0.25); cursor: grab; }
.range input::-moz-range-thumb { width: 22px; height: 22px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 0 0 6px rgba(240, 189, 132, 0.25); }
.range output { font-weight: 500; font-size: 22px; letter-spacing: -0.02em; min-width: 140px; font-variant-numeric: tabular-nums; }
.range .unit { font: 400 11px var(--f-mono); letter-spacing: 0.06em; color: var(--mute-d); border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 999px; height: 32px; padding: 0 12px; }
.field input[type="month"] { color-scheme: dark; max-width: 300px; }
.drop { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: center; padding: 26px; border-radius: 14px; border: 1.5px dashed rgba(255, 255, 255, 0.28); cursor: pointer; transition: border-color 0.3s, background 0.3s; }
.drop:hover, .drop.over { border-color: var(--warm); background: rgba(240, 189, 132, 0.06); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop svg { width: 40px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.drop > span { color: var(--mute-d); }
.drop > span b { color: #fff; font-weight: 500; }
.drop-list { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; }
.drop-list li { font: 400 12px var(--f-mono); padding: 6px 10px; border-radius: 6px; background: rgba(255, 255, 255, 0.08); }
.k-you { grid-template-columns: 1fr 1fr 1fr; }
.k-form .btn { justify-self: start; }
.k-sheet { position: sticky; top: 90px; display: grid; gap: 22px; }
.ks-paper { position: relative; background: var(--white); color: var(--ink); border-radius: 6px; padding: 18px; box-shadow: 0 50px 80px -40px rgba(0, 0, 0, 0.8); rotate: 1deg; transition: rotate 0.6s var(--ease); }
.ks-paper:hover { rotate: 0deg; }
.ks-draw { border: 1.5px solid var(--ink); aspect-ratio: 200 / 150; margin-bottom: -1.5px; display: grid; place-items: center; background: linear-gradient(var(--line-l) 1px, transparent 1px) 0 0 / 16px 16px, linear-gradient(90deg, var(--line-l) 1px, transparent 1px) 0 0 / 16px 16px; }
.ks-draw svg { width: 70%; height: 90%; }
.ks-draw svg * { fill: none; stroke: var(--ink); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.ks-draw svg .a { stroke: var(--blue); stroke-width: 1.6; }
.ks-block { width: 100%; border-collapse: collapse; border: 1.5px solid var(--ink); }
.ks-block th, .ks-block td { border: 1px solid var(--ink); padding: 8px 10px; text-align: left; font-size: 14px; }
.ks-block th { width: 30%; font: 500 10.5px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-l); }
.ks-block td { font-weight: 500; }
.ks-block td.flash { animation: tbflash 0.9s var(--ease); }
@keyframes tbflash { 0% { background: rgba(240, 189, 132, 0.8); } 100% { background: transparent; } }
.ks-last td { font-weight: 400; }
.ks-stamp {
  position: absolute; right: 26px; top: 26%; z-index: 2; pointer-events: none;
  display: grid; justify-items: center; padding: 12px 20px; border: 3px solid #c2362b; color: #c2362b; border-radius: 8px;
  font: 600 26px var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; rotate: -12deg; opacity: 0; scale: 1.6;
  mix-blend-mode: multiply;
}
.ks-stamp small { font: 500 10px var(--f-mono); letter-spacing: 0.08em; }
.k-direct { display: grid; gap: 10px; }
.k-direct p { display: flex; justify-content: space-between; border-bottom: 1px solid var(--line-d); padding-bottom: 10px; }
.k-direct span { font: 400 11px var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-d); }
.k-direct a:hover { color: var(--warm); }

/* ------------------------------------------------------------ footer */
.foot { background: var(--ink); color: #fff; padding: 20px var(--pad) 30px; overflow: hidden; border-top: 1px solid var(--line-d); }
.foot-big { font-weight: 600; font-size: clamp(90px, 25vw, 420px); letter-spacing: 0.06em; line-height: 0.8; text-align: center; color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.28); margin: 30px 0 60px; user-select: none; }
.foot-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: var(--maxw); margin: 0 auto; padding-bottom: 40px; border-bottom: 1px solid var(--line-d); }
.foot-cols h4 { font: 400 11px var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--mute-d); margin-bottom: 14px; }
.foot-cols a, .foot-cols p { display: block; font-size: 15px; margin-bottom: 8px; color: rgba(255, 255, 255, 0.85); }
.foot-cols a:hover { color: var(--warm); }
.foot-base { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; max-width: var(--maxw); margin: 22px auto 0; font-size: 13.5px; color: var(--mute-d); }
.foot-base .sheet-tag { color: var(--mute-d); }
.foot-base .sheet-tag b { color: #fff; }

.toast { position: fixed; left: 50%; bottom: 24px; z-index: 70; translate: -50% calc(100% + 40px); visibility: hidden; background: var(--ink); color: #fff; padding: 14px 20px; border-radius: 12px; font-size: 15px; box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5); transition: translate 0.5s var(--ease), visibility 0s 0.5s; max-width: calc(100vw - 32px); }
.toast.on { transition: translate 0.5s var(--ease), visibility 0s; }
.toast.on { translate: -50% 0; visibility: visible; }

/* ------------------------------------------------------------ responsive */
@media (max-width: 1180px) {
  .nav-links { gap: 20px; }
  .nav-dl { display: none; }
  .q-grid { grid-template-columns: repeat(2, 1fr); }
  .q-card { min-height: 360px; border-bottom: 1px solid var(--line-l); }
  .q-card:nth-child(2) { border-right: 0; }
  .svc { grid-template-columns: 1fr; gap: 30px; }
  .lab-wrap, .detail-wrap, .k-wrap { grid-template-columns: 1fr; }
  .detail-sheet { position: relative; top: 0; }
  .lab-stage { min-height: 560px; }
  .f-wrap { grid-template-columns: 1fr; }
  .f-box { position: relative; top: 0; }
  .k-sheet { position: relative; top: 0; max-width: 560px; }
  .l-item { grid-template-columns: 56px 1fr 120px 110px; }
  .l-size { display: none; }
  .p-card { grid-column: span 6; }
  .p-card.big { grid-column: span 12; grid-row: auto; }
  .p-card.big .p-img { height: auto; aspect-ratio: 16 / 9; min-height: 0; }
  .p-card.wide { grid-column: span 6; }
}
@media (max-width: 980px) {
  .nav-links { display: none; }
  .nav-menu { display: block; }
  .nav-ctas .btn { display: none; }
  .brand-sub { display: none; }
}
@media (max-width: 820px), (max-aspect-ratio: 9/10) {
  .hero { height: auto; min-height: 0; display: flex; flex-direction: column; background: var(--ink); }
  .hero-media { position: relative; inset: auto; height: 66svh; min-height: 420px; }
  .hero-media::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 26%; background: linear-gradient(180deg, transparent, var(--ink)); pointer-events: none; z-index: 2; }
  .hero-poster { background-image: url("assets/hero/poster_mobile.jpg"); background-position: 50% 45%; }
  .hero-copy { position: relative; left: auto; bottom: auto; width: auto; padding: 0 var(--pad) 26px; margin-top: -40px; z-index: 3; }
  .hero-title { font-size: clamp(46px, 13vw, 76px); margin-bottom: 20px; }
  .hero-lede { margin-bottom: 26px; }
  .hero-finish { position: relative; right: auto; bottom: auto; margin: 0 var(--pad) 26px; align-self: flex-start; flex-wrap: wrap; row-gap: 6px; }
  .hf-name { min-width: 0; }
  .hero-hint { position: absolute; top: 84px; bottom: auto; right: var(--pad); translate: none; z-index: 3; font-size: 10.5px; }
  .hero-sheet { position: relative; left: auto; bottom: auto; padding: 0 var(--pad) 30px; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .q-grid { grid-template-columns: 1fr; }
  .q-card { min-height: 0; border-right: 0; padding: 26px 4px; }
  .q-art { width: 64px; height: 64px; margin: 0; position: absolute; right: 4px; top: 22px; }
  .q-card h3, .q-card p { padding-right: 76px; }
  .sys-grid { grid-template-columns: 1fr; }
  .sys-body { padding: 22px 22px 26px; column-gap: 14px; }
  .svc-item { grid-template-columns: 40px 1fr; }
  .svc-ic { display: none; }
  .lab-stage { min-height: 440px; }
  .lab-limits { grid-template-columns: 1fr; }
  .lab-answer { min-height: 0; }
  .title-block { grid-template-columns: 1fr 1fr; }
  .title-block div:first-child { grid-column: 1 / -1; border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.35); }
  .rt-head, .rt-row { grid-template-columns: 1.3fr repeat(3, 0.6fr); }
  .rt-head span { font-size: 10px; letter-spacing: 0.02em; }
  .rt-task { font-size: 15px; }
  .rt-task small { display: none; }
  .resp-toggle button { padding: 0 16px; font-size: 14px; }
  .sch-pin { height: auto; min-height: 0; padding-top: 100px; }
  .sch-head { grid-template-columns: 1fr; gap: 16px; }
  .sch-body { grid-template-columns: 1fr; }
  .sch-elev svg { max-height: 42svh; }
  .p-card, .p-card.wide { grid-column: span 12; }
  .p-view { grid-template-columns: 1fr; }
  .pv-media { min-height: 240px; aspect-ratio: 3 / 2; }
  .l-item { grid-template-columns: 48px 1fr auto; gap: 14px; }
  .l-sys { display: none; }
  .l-badge { width: 44px; height: 52px; font-size: 10px; }
  .l-row .hf-label { width: 100%; }
  .k-you, .fb-form { grid-template-columns: 1fr; }
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .sec-head-row { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}