/* KYŌDŌ WORKS — drawing-set aesthetic: sumi ink on paper grey, denim + yuzu accents */

:root {
  --paper: #EFF2F4;
  --ink: #2B2E34;
  --denim: #3E7CB1;
  --yuzu: #F2B33D;
  --pale: #C9CED4;
  --card: #F7F9FA;
  --ink-soft: #4A4E56;
  --ink-mute: #6B707A;
  --disp: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", sans-serif;
  --body: "Rubik", "Hiragino Sans", sans-serif;
  --mono: "M PLUS 1 Code", ui-monospace, monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.5, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* faint drafting dot-grid across the whole sheet */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1;
  background-image: radial-gradient(#C9CED4 1px, transparent 1.3px);
  background-size: 28px 28px;
  opacity: 0.38;
}

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

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

a { color: var(--denim); text-underline-offset: 3px; }
a:hover { color: var(--ink); }

:focus-visible {
  outline: 2.5px solid var(--denim);
  outline-offset: 3px;
  border-radius: 3px;
}

.mono { font-family: var(--mono); font-weight: 500; }

/* ---------------- header ---------------- */
.site-head {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(20px, 4vw, 56px);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--pale) 65%, transparent);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 34px; height: 34px; flex: none; }
.brand-name {
  font-family: var(--disp); font-weight: 800; font-size: 19px; letter-spacing: 0.02em;
  display: flex; align-items: baseline; gap: 6px;
}
.brand-name b { font-weight: 500; color: var(--ink-mute); }
.brand-name i { font-style: normal; font-family: var(--mono); font-weight: 400; font-size: 10.5px; color: var(--ink-mute); letter-spacing: 0.12em; }
.site-nav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.site-nav a {
  text-decoration: none; color: var(--ink-soft);
  font-weight: 500; font-size: 15px; letter-spacing: 0.01em;
}
.site-nav a:hover { color: var(--ink); }
.site-nav .nav-cta {
  color: var(--paper); background: var(--ink);
  padding: 8px 18px; border-radius: 99px; font-weight: 600;
}
.site-nav .nav-cta:hover { background: var(--denim); color: #fff; }

/* ---------------- shared section chrome ---------------- */
main { display: block; }
.band, .hero, .houses { padding: clamp(56px, 8vw, 110px) clamp(20px, 5vw, 72px); max-width: 1360px; margin: 0 auto; }

.eyebrow {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-mute);
  display: flex; align-items: center; gap: 14px; margin-bottom: 22px;
}
.eyebrow::after { content: ""; height: 1px; flex: 0 0 64px; background: var(--pale); }
.eb-num { color: var(--denim); font-weight: 500; letter-spacing: 0.1em; }

h1, h2, h3 { font-family: var(--disp); line-height: 1.16; letter-spacing: -0.01em; }
h2 { font-size: clamp(30px, 3.6vw, 46px); font-weight: 800; max-width: 21ch; }
.section-lede { margin-top: 16px; max-width: 52ch; color: var(--ink-soft); }

/* ---------------- hero ---------------- */
.hero {
  display: grid; grid-template-columns: minmax(340px, 5fr) 6fr;
  gap: clamp(28px, 4vw, 64px); align-items: center;
  padding-top: clamp(48px, 6vw, 84px);
}
.hero h1 {
  font-size: clamp(34px, 3.5vw, 48px); font-weight: 800;
  letter-spacing: -0.015em; margin: 4px 0 20px;
}
.lede { font-size: clamp(17px, 1.4vw, 19px); color: var(--ink-soft); max-width: 46ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.btn {
  font-family: var(--disp); font-weight: 700; font-size: 15.5px;
  padding: 13px 26px; border-radius: 99px; text-decoration: none;
  border: 1.5px solid var(--ink); cursor: pointer;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--denim); border-color: var(--denim); color: #fff; transform: translateY(-2px); }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }

.hero-stats { display: flex; gap: clamp(22px, 3vw, 44px); margin-top: 40px; }
.hero-stats div { display: flex; flex-direction: column-reverse; }
.hero-stats dt { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); margin-top: 4px; }
.hero-stats dd { font-family: var(--disp); font-weight: 800; font-size: clamp(24px, 2.4vw, 32px); }
.hero-stats dd i { font-style: normal; font-size: 0.6em; font-weight: 700; color: var(--denim); margin-left: 2px; }

.hero-fig { min-height: 300px; }
.hero-iso-mount svg { width: 100%; height: auto; display: block; }

/* hero massings rise on load */
.hero-iso-mount .massing { opacity: 0; transform: translateY(30px); transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); }
.hero-iso-mount .massing.m2 { transition-delay: 0.18s; }
.hero-iso-mount .massing.m3 { transition-delay: 0.36s; }
.hero-iso-mount.in .massing { opacity: 1; transform: none; }

.noscript-note { font-family: var(--mono); font-size: 14px; color: var(--ink-soft); border: 1px dashed var(--pale); padding: 18px; border-radius: 10px; }

/* ---------------- iso drawing common ---------------- */
svg.iso { overflow: visible; }
svg.iso polygon, svg.iso path, svg.iso circle, svg.iso ellipse, svg.iso line {
  stroke: var(--ink); stroke-width: 1; stroke-linejoin: round; stroke-linecap: round;
}
svg.iso .noline, svg.iso .beam, svg.iso .lightpool { stroke: none; }
svg.iso .thin { }
svg.iso .thin polygon { stroke-width: 0.7; }
svg.iso .seam { stroke: var(--pale); stroke-width: 1; }
svg.iso .win { stroke-width: 1; }
svg.iso .sheen { stroke: #fff; stroke-width: 1.4; opacity: 0.9; }
svg.iso .rail { stroke-width: 0.9; }
svg.iso .railtop { stroke-width: 1.4; }
svg.iso .board { stroke: var(--pale); stroke-width: 0.9; }
svg.iso .stem { stroke-width: 1.3; }
svg.iso .leaf { fill: #E2E8E4; stroke-width: 1; }
svg.iso .plate { stroke: var(--pale); stroke-width: 1; }
svg.iso .lotdash { stroke: var(--ink-mute); stroke-dasharray: 5 5; stroke-width: 1; }
svg.iso .stone { stroke: var(--ink-mute); stroke-width: 1; }
svg.iso .ghost { opacity: 0.5; }
svg.iso .ghost polygon { stroke: var(--pale); }
svg.iso .beam { opacity: 0.3; }
svg.iso .lightpool { opacity: 0.32; }
svg.iso .drawerface { stroke-width: 1; }
svg.iso .cat path { stroke-linejoin: round; }

svg.iso text {
  font-family: var(--mono); font-size: 11px; fill: var(--ink-soft);
  stroke: none; font-weight: 500;
}
svg.iso .plate-label { font-size: 10.5px; letter-spacing: 0.08em; fill: var(--ink-mute); }
svg.iso .jo { font-size: 10.5px; fill: var(--ink); font-weight: 500; }
svg.iso .catnote { fill: var(--ink-mute); font-size: 9.5px; text-anchor: middle; }
svg.iso .hero-name { font-size: 12px; fill: var(--ink); text-anchor: middle; font-weight: 500; }

.dim line { stroke: var(--ink-mute); stroke-width: 0.9; }
.dim text { font-family: var(--mono); font-size: 10.5px; fill: var(--ink-mute); text-anchor: middle; stroke: none; }
.dim.accdim line { stroke: var(--denim); }
.dim.accdim text { fill: var(--denim); font-weight: 500; }
.dim.big text { font-size: 13px; font-weight: 500; }

/* floors: collapsed by default, lift when svg has .exploded */
svg.iso .floor {
  transition: transform 1.05s cubic-bezier(0.3, 1.16, 0.35, 1);
  will-change: transform;
}
svg.iso.exploded .floor { transform: translateY(var(--dy)); }

/* exploded-axon guide verticals */
svg.iso .guide {
  stroke: var(--ink-mute); stroke-width: 0.8; stroke-dasharray: 3 6;
  opacity: 0; transition: opacity 0.7s var(--ease-out) 0.5s;
}
svg.iso.exploded .guide { opacity: 0.5; }

/* per-floor annotations appear only when exploded */
svg.iso .floor .flnote, svg.iso .floor .leader,
svg.iso .floor .chdim, svg.iso .floor .jo, svg.iso .floor .catnote {
  opacity: 0; transition: opacity 0.5s var(--ease-out) 0.55s;
}
svg.iso.exploded .floor .flnote, svg.iso.exploded .floor .leader,
svg.iso.exploded .floor .chdim, svg.iso.exploded .floor .jo,
svg.iso.exploded .floor .catnote { opacity: 1; }
.flnote { font-size: 11px; fill: var(--ink); }
.leader { stroke: var(--ink-mute); stroke-width: 0.8; }
.chdim line { stroke: var(--ink-mute); }
.chdim text { text-anchor: start; }

/* ---------------- houses ---------------- */
.houses h2 { margin-bottom: 4px; }
.house {
  margin-top: clamp(56px, 6vw, 88px);
  border-top: 1px solid var(--pale);
  padding-top: clamp(30px, 3.4vw, 48px);
}
.house-head {
  display: flex; align-items: baseline; gap: 20px; flex-wrap: wrap;
  margin-bottom: 26px;
}
.house-num {
  font-family: var(--disp); font-weight: 800;
  font-size: clamp(48px, 5.4vw, 76px); line-height: 1;
  color: var(--acc, var(--denim));
}
#house-03 .house-num { -webkit-text-stroke: 2px var(--ink); color: transparent; }
.house-head h3 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; }
.house-jp { font-family: var(--mono); font-weight: 400; font-size: 0.5em; color: var(--ink-mute); margin-left: 10px; letter-spacing: 0.14em; }
.house-tag { color: var(--ink-soft); font-size: 15.5px; margin-top: 2px; }
.status {
  margin-left: auto; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 6px 14px; border-radius: 99px; white-space: nowrap;
}
.status-open { border: 1.5px solid var(--denim); color: var(--denim); }
.status-offer { background: var(--yuzu); color: var(--ink); }

.house-grid {
  display: grid; grid-template-columns: 11fr 8fr;
  gap: clamp(24px, 3.4vw, 56px); align-items: start;
}
.house-alt .house-grid { grid-template-columns: 8fr 11fr; }
.house-alt .house-fig { order: 2; }
.house-alt .house-side { order: 1; }

.house-fig {
  position: relative;
  background: var(--card);
  border: 1px solid var(--pale);
  border-radius: 16px;
  padding: clamp(14px, 2vw, 30px);
}
.house-fig svg { width: 100%; height: auto; display: block; }

.explode-chip {
  position: absolute; top: 14px; right: 14px;
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12px;
  background: var(--paper); color: var(--ink);
  border: 1.5px solid var(--ink); border-radius: 99px;
  padding: 7px 14px; cursor: pointer;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out);
}
.explode-chip:hover { background: var(--ink); color: var(--paper); }
.explode-chip .chip-word { font-weight: 500; }
.explode-chip .chip-en { color: inherit; opacity: 0.65; }
.explode-chip[aria-pressed="true"] { background: var(--acc, var(--denim)); border-color: var(--acc, var(--denim)); color: #fff; }
#house-02 .explode-chip[aria-pressed="true"] { color: var(--ink); }
#house-03 .explode-chip[aria-pressed="true"] { color: var(--paper); }

.house-story p { margin-bottom: 14px; color: var(--ink-soft); }
.house-story p strong, .house-story p em { color: var(--ink); }

.spec { width: 100%; border-collapse: collapse; margin-top: 10px; }
.spec th, .spec td { text-align: left; padding: 9px 2px; border-bottom: 1px solid color-mix(in srgb, var(--pale) 60%, transparent); vertical-align: baseline; }
.spec th { font-weight: 500; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); width: 32%; font-family: var(--mono); }
.spec td { font-family: var(--mono); font-size: 14.5px; font-weight: 500; }
.spec-price td { font-family: var(--disp); font-weight: 800; font-size: 20px; }
.spec-price td span { font-family: var(--mono); font-weight: 500; font-size: 13px; color: var(--denim); margin-left: 8px; }
.spec-price th, .spec-price td { border-bottom: none; padding-top: 14px; }

/* ---------------- figures / method ---------------- */
.band-grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(28px, 4vw, 64px); align-items: center; }
.band-copy h2 { margin-bottom: 18px; }
.band-copy p { margin-bottom: 14px; color: var(--ink-soft); max-width: 50ch; }
.band-copy p strong, .band-copy em { color: var(--ink); font-style: normal; }

.tsubo-note {
  margin-top: 22px; border-left: 3px solid var(--yuzu);
  padding: 10px 18px; background: color-mix(in srgb, var(--yuzu) 9%, transparent);
  border-radius: 0 10px 10px 0;
}
.tsubo-note p { margin: 0; font-size: 15px; }

.fig-card {
  background: var(--card); border: 1px solid var(--pale); border-radius: 16px;
  padding: clamp(18px, 2.4vw, 30px);
}
.fig-card svg { width: 100%; height: auto; display: block; }
.fig-card figcaption {
  font-family: var(--mono); font-size: 12px; color: var(--ink-mute);
  margin-top: 16px; line-height: 1.6; border-top: 1px solid color-mix(in srgb, var(--pale) 60%, transparent);
  padding-top: 12px;
}

.method-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 2.6vw, 36px); margin-top: 40px;
}
.method-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 8px; }
.method-card > p { font-size: 15px; color: var(--ink-soft); margin-bottom: 18px; max-width: 56ch; }

/* fig drawing styles (screen-space) */
.fig { overflow: visible; }
.fig .outline { stroke: var(--ink); stroke-width: 1.1; }
.fig .outline.heavy, .fig .ink.heavy { stroke-width: 1.8; }
.fig .ink { stroke: var(--ink); stroke-width: 1.1; fill: none; }
.fig .noline { stroke: none; }
.fig .groundline { stroke: var(--ink); stroke-width: 1.6; }
.fig .ghostfill { stroke: var(--pale); }
.fig text { font-family: var(--mono); stroke: none; }
.fig .figmono { font-size: 11px; fill: var(--ink-soft); }
.fig .figmono.mid { font-size: 10px; fill: var(--ink-mute); }
.fig .dim-t { fill: var(--ink-mute); font-size: 10.5px; }
.fig .carbody { stroke-width: 1.4; }

/* sun figure states */
.sunfig .sunstate { opacity: 0; transition: opacity 0.6s var(--ease-out); }
.sunfig.show-summer .sunstate.summer { opacity: 1; }
.sunfig.show-winter .sunstate.winter { opacity: 1; }
.sunfig .litzone { opacity: 0.3; stroke: none; }
.sunfig .ray { stroke: var(--yuzu); stroke-width: 1.6; stroke-dasharray: 7 5; }
.sunfig .sundisc { fill: var(--yuzu); stroke: var(--ink); stroke-width: 1.2; }
.sunfig .arc { stroke: var(--ink-mute); stroke-width: 0.9; stroke-dasharray: 3 3; }
.sunfig .anglelab { fill: var(--ink); font-weight: 500; font-size: 12px; }
.sunfig .bounce { stroke: var(--yuzu); stroke-width: 1.3; }
.sunfig .bouncewall { stroke: #fff; stroke-width: 3; }

.sun-toggle { display: flex; gap: 8px; margin-bottom: 16px; }
.sun-btn {
  font-family: var(--mono); font-size: 12.5px; padding: 7px 16px;
  border: 1.5px solid var(--ink); border-radius: 99px; background: transparent;
  color: var(--ink); cursor: pointer; transition: background 0.2s, color 0.2s;
}
.sun-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.sun-btn:hover { background: var(--yuzu); border-color: var(--ink); color: var(--ink); }

/* ceiling chart */
.chchart .chnum { font-size: 12px; fill: var(--ink); font-weight: 500; }
.chchart .tallnum { fill: var(--denim); }
.chchart .colname { font-size: 12px; fill: var(--ink); font-weight: 500; }
.chchart .skynote { fill: var(--ink-mute); }

/* stair drawers: closed = pushed home along --cx/--cy; open = pulled out */
.stairfig .drawerg { cursor: pointer; transition: transform 0.5s var(--ease-spring); outline-offset: 4px; transform: translate(var(--cx), var(--cy)); pointer-events: none; }
.stairfig .drawerg .drawerface, .stairfig .drawerg .drawerknob { pointer-events: all; }
.stairfig .drawerg.open { transform: none; }
.stairfig .drawerbody { opacity: 0; transition: opacity 0.25s var(--ease-out); }
.stairfig .drawerg.open .drawerbody { opacity: 1; }
.stairfig .drawerg:hover .drawerface { fill: var(--yuzu); }
.stairfig .drawerg:focus-visible { outline: 2.5px solid var(--denim); }
.stairfig .drawerlab {
  opacity: 0; transition: opacity 0.3s var(--ease-out); font-size: 11px; fill: var(--ink);
  paint-order: stroke; stroke: var(--card); stroke-width: 3.5px; stroke-linejoin: round;
}
.stairfig .drawerg.open .drawerlab, .stairfig .drawerg:hover .drawerlab, .stairfig .drawerg:focus-visible .drawerlab { opacity: 1; }

/* density meter */
.density { display: grid; gap: 12px; margin: 8px 0 6px; }
.dens-row { display: grid; grid-template-columns: minmax(150px, 190px) 1fr auto; gap: 12px; align-items: center; }
.dens-name { font-family: var(--mono); font-size: 12.5px; color: var(--ink-soft); }
.dens-dots { display: flex; flex-wrap: wrap; gap: 4px; }
.dens-dots i { width: 10px; height: 10px; background: var(--denim); border-radius: 2.5px; }
.dens-avg .dens-dots i { background: transparent; border: 1.4px solid var(--ink-mute); }
.dens-num { font-family: var(--mono); font-size: 12.5px; color: var(--ink); font-weight: 500; }
.dens-avg .dens-name, .dens-avg .dens-num { color: var(--ink-mute); }

/* ---------------- prices ---------------- */
.price-wrap { overflow-x: auto; margin-top: 36px; border: 1px solid var(--pale); border-radius: 16px; background: var(--card); }
.price-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.price-table th, .price-table td { text-align: left; padding: 16px 22px; border-bottom: 1px solid color-mix(in srgb, var(--pale) 55%, transparent); }
.price-table thead th {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-mute);
  border-bottom: 1.5px solid var(--ink);
}
.price-table tbody th { font-family: var(--disp); font-weight: 700; font-size: 16.5px; }
.price-table td { font-size: 15px; color: var(--ink-soft); }
.price-table td.mono { font-family: var(--mono); font-weight: 500; color: var(--ink); font-size: 15.5px; }
.price-table tbody tr:last-child th, .price-table tbody tr:last-child td { border-bottom: none; }
.row-offer { opacity: 0.55; }
.row-offer th { text-decoration: line-through; text-decoration-color: var(--yuzu); text-decoration-thickness: 2.5px; }
.price-fine { margin-top: 18px; font-size: 14px; color: var(--ink-mute); max-width: 72ch; }

/* ---------------- inquire ---------------- */
.inquire-grid { align-items: start; }
.office { font-style: normal; margin-top: 26px; line-height: 1.9; color: var(--ink-soft); font-size: 15.5px; }
.office .mono { color: var(--ink); }

.inquiry {
  background: var(--card); border: 1px solid var(--pale); border-radius: 16px;
  padding: clamp(22px, 3vw, 36px); display: grid; gap: 18px;
}
.field { display: grid; gap: 7px; }
.field label { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }
.field label span { text-transform: none; letter-spacing: 0.05em; }
.field input, .field select, .field textarea {
  font-family: var(--body); font-size: 16px; color: var(--ink);
  background: var(--paper); border: 1.5px solid var(--pale); border-radius: 10px;
  padding: 12px 14px; width: 100%;
}
.field textarea { resize: vertical; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  outline: 2.5px solid var(--denim); outline-offset: 1px; border-color: var(--denim);
}
.field ::placeholder { color: var(--ink-mute); opacity: 0.7; }
.inquiry .btn { justify-self: start; }
.form-done {
  grid-column: 2; background: var(--card); border: 1.5px solid var(--denim);
  border-radius: 16px; padding: 28px; font-family: var(--mono); font-size: 15px;
}

/* ---------------- footer ---------------- */
.site-foot { background: var(--ink); color: var(--pale); margin-top: 40px; padding: clamp(40px, 5vw, 64px) clamp(20px, 5vw, 72px) 28px; }
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; max-width: 1360px; margin: 0 auto; }
.foot-brand { display: flex; gap: 16px; align-items: flex-start; max-width: 380px; }
.foot-brand .brand-mark { width: 40px; height: 40px; }
.foot-brand p { font-family: var(--disp); font-weight: 700; font-size: 15.5px; line-height: 1.6; color: var(--paper); }
.foot-brand p span { font-family: var(--mono); font-weight: 400; font-size: 12px; color: var(--pale); }
.foot-legal { font-family: var(--mono); font-size: 12px; line-height: 1.9; color: #9EA3AC; text-align: right; }
.foot-legal p + p { margin-top: 12px; }
.credit {
  max-width: 1360px; margin: 36px auto 0; padding-top: 18px;
  border-top: 1px solid #43474F;
  font-family: var(--mono); font-size: 12px; color: #9EA3AC;
}
.credit a { color: #C6CBD3; }
.credit a:hover { color: #fff; }

/* ---------------- responsive ---------------- */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .hero-fig { order: -1; }
  .band-grid { grid-template-columns: 1fr; }
  .house-grid, .house-alt .house-grid { grid-template-columns: 1fr; }
  .house-alt .house-fig { order: 0; }
  .house-alt .house-side { order: 1; }
  .method-grid { grid-template-columns: 1fr; }
  .form-done { grid-column: auto; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .site-head { padding: 10px 14px; }
  .brand { gap: 8px; }
  .brand-mark { width: 28px; height: 28px; }
  .brand-name { font-size: 16px; gap: 4px; }
  .brand-name i { display: none; }
  .site-nav { gap: 11px; }
  .site-nav a { font-size: 13px; }
  .site-nav .nav-cta { padding: 6px 12px; }
  .hero { padding-top: 26px; gap: 20px; }
  .hero-fig { min-height: 0; }
  .hero h1 { font-size: 33px; }
  .eyebrow { flex-wrap: wrap; row-gap: 4px; }
  .eyebrow::after { display: none; }
  .eb-num { white-space: nowrap; }
  .hero-stats { gap: 18px; flex-wrap: wrap; }
  .house-head { gap: 12px; }
  .status { margin-left: 0; }
  .house-num { font-size: 44px; }
  .explode-chip .chip-en { display: none; }
  .dens-row { grid-template-columns: 1fr; gap: 5px; }
  .dens-dots { order: 2; }
  .foot-legal { text-align: left; }
}

@media (max-width: 460px) {
  .brand-name b { display: none; }
}

/* ---------------- reduced motion ---------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-iso-mount .massing { opacity: 1; transform: none; transition: none; }
  svg.iso .floor { transition: none; }
  svg.iso .floor .flnote, svg.iso .floor .leader, svg.iso .floor .chdim,
  svg.iso .floor .jo, svg.iso .floor .catnote { transition: none; }
  .stairfig .drawerg { transition: none; }
  .sunfig .sunstate { transition: none; }
  .btn, .explode-chip, .sun-btn { transition: none; }
}