/* Architect landing page: the drawing set.
   Light = a plotted sheet. Dark = CAD model space. */

@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
}
@font-face {
  font-family: "osifont";
  src: url("fonts/osifont.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

:root {
  --paper: #f3f5f2;
  --paper-2: #e8ece8;
  --ink: #15181b;
  --ink-2: #454c53;
  --ink-3: #5c636a;
  --line: #2a45b0;           /* diazo blue-line: drawn geometry */
  --line-soft: rgba(42, 69, 176, 0.22);
  --grid: rgba(42, 69, 176, 0.06);
  --red: #c42d22;            /* redline: actions and markup */
  --red-ink: #ffffff;
  --live: #1d7a4c;
  --dim: #2a45b0;
  --shot-edge: #15181b;
  --sel: rgba(42, 69, 176, 0.18);

  --pen-1: 0.75px;
  --pen-2: 1.25px;
  --pen-3: 2.5px;

  --font-body: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --font-tech: "osifont", "Archivo", ui-sans-serif, system-ui, sans-serif;

  --gutter: clamp(16px, 3.2vw, 40px);
  --measure: 66ch;
  --bar-h: 56px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: light;
}

/* model space (dark) tokens, applied by preference or by the toggle */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="plot"]) {
    --paper: #0c0e10;
    --paper-2: #14171a;
    --ink: #e9ecee;
    --ink-2: #b2bac1;
    --ink-3: #8a939b;
    --line: #4fd0df;
    --line-soft: rgba(79, 208, 223, 0.25);
    --grid: rgba(79, 208, 223, 0.05);
    --red: #ff5f4f;
    --red-ink: #120605;
    --live: #f2d14b;
    --dim: #f2d14b;
    --shot-edge: #39424a;
    --sel: rgba(79, 208, 223, 0.25);
    color-scheme: dark;
  }
}
:root[data-theme="model"] {
  --paper: #0c0e10;
  --paper-2: #14171a;
  --ink: #e9ecee;
  --ink-2: #b2bac1;
  --ink-3: #8a939b;
  --line: #4fd0df;
  --line-soft: rgba(79, 208, 223, 0.25);
  --grid: rgba(79, 208, 223, 0.05);
  --red: #ff5f4f;
  --red-ink: #120605;
  --live: #f2d14b;
  --dim: #f2d14b;
  --shot-edge: #39424a;
  --sel: rgba(79, 208, 223, 0.25);
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--bar-h) + 12px);
  scrollbar-color: var(--line-soft) var(--paper);
  background: var(--paper);
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-variation-settings: "wdth" 100;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration-thickness: var(--pen-1); text-underline-offset: 0.22em; }
a:hover { text-decoration-color: var(--red); }

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

code {
  font-family: var(--font-tech);
  font-size: 0.95em;
  letter-spacing: 0.01em;
  padding: 0 0.2em;
  border-bottom: var(--pen-1) solid var(--line-soft);
}

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

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--red); color: var(--red-ink);
  padding: 8px 14px; font-family: var(--font-tech);
}
.skip:focus { top: 10px; }

/* ---------- the top bar: brand, sheet index, docs ---------- */

.bar {
  position: sticky; top: 0; z-index: 20;
  height: var(--bar-h);
  display: flex; align-items: center; gap: 20px;
  padding: 0 var(--gutter);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: var(--pen-2) solid var(--ink);
  backdrop-filter: saturate(1.2) blur(6px);
}

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none;
  font-weight: 800; font-variation-settings: "wdth" 70;
  text-transform: uppercase; letter-spacing: 0.06em; font-size: 1.05rem;
}
.brand-mark { width: 22px; height: 22px; }
.brand-mark path { stroke: var(--ink); stroke-width: 2.4; stroke-linecap: round; }
.brand-mark circle { fill: var(--red); }

.bar-nav { position: relative; flex: 1; min-width: 0; }
.bar-toggle { display: none; }

.sheet-list {
  display: flex; gap: 2px; list-style: none; margin: 0; padding: 0;
  font-family: var(--font-tech); font-size: 0.95rem;
}
.sheet-list a {
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 6px 8px; text-decoration: none; white-space: nowrap;
  border: var(--pen-1) solid transparent;
}
.sheet-list a:hover { border-color: var(--line-soft); }
.sheet-list a[aria-current="true"] { border-color: var(--ink); }
.sheet-list .sn { color: var(--line); }

.bar-end { display: flex; align-items: center; gap: 4px; font-family: var(--font-tech); }
.bar-link { padding: 6px 8px; text-decoration: none; }
.bar-link:hover { text-decoration: underline; text-decoration-color: var(--red); }

.plot-toggle {
  margin-left: 8px;
  display: inline-flex; border: var(--pen-2) solid var(--ink);
  background: transparent; color: var(--ink); padding: 0; cursor: pointer;
  font: inherit; font-family: var(--font-tech); font-size: 0.85rem;
}
.plot-toggle span:not(.visually-hidden) { padding: 4px 9px; }
.plot-toggle .plot-toggle-a { background: var(--ink); color: var(--paper); }
:root[data-theme="model"] .plot-toggle .plot-toggle-a { background: transparent; color: var(--ink); }
:root[data-theme="model"] .plot-toggle .plot-toggle-b { background: var(--ink); color: var(--paper); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .plot-toggle .plot-toggle-a { background: transparent; color: var(--ink); }
  :root:not([data-theme]) .plot-toggle .plot-toggle-b { background: var(--ink); color: var(--paper); }
}

@media (min-width: 0px) {
  .bar-toggle {
    display: inline-flex; align-items: baseline; gap: 10px;
    background: transparent; color: var(--ink); cursor: pointer;
    border: var(--pen-1) solid var(--ink); padding: 6px 10px;
    font-family: var(--font-tech); font-size: 0.95rem;
  }
  .bar-toggle-label { color: var(--line); }
  .bar-toggle::after {
    content: ""; width: 7px; height: 7px; align-self: center;
    border-right: var(--pen-2) solid currentColor; border-bottom: var(--pen-2) solid currentColor;
    transform: translateY(-2px) rotate(45deg); transition: transform 0.25s var(--ease);
  }
  .bar-toggle[aria-expanded="true"]::after { transform: translateY(1px) rotate(225deg); }
  .sheet-list {
    position: absolute; top: calc(100% + 11px); left: 0;
    flex-direction: column; min-width: 240px; gap: 0;
    background: var(--paper); border: var(--pen-2) solid var(--ink);
    box-shadow: 0 18px 40px -18px rgba(0, 0, 0, 0.35);
    padding: 6px;
    visibility: hidden; opacity: 0; transform: translateY(-6px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0s 0.2s;
  }
  .bar-nav.open .sheet-list {
    visibility: visible; opacity: 1; transform: none;
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  }
  .sheet-list a { display: flex; padding: 10px 10px; }
}
@media (max-width: 640px) {
  .bar { gap: 10px; }
  .brand span { display: none; }
  .bar-link { display: none; }
  .bar-current { display: none; }
  .plot-toggle { margin-left: auto; }
}

/* ---------- sheets ---------- */

main { padding: 36px max(var(--gutter), 30px) 0; display: grid; gap: clamp(44px, 4vw, 60px); }
@media (max-width: 640px) { main { padding-inline: 16px; } }

.sheet {
  position: relative;
  max-width: 1480px; width: 100%; margin: 0 auto;
  background: var(--paper);
  border: var(--pen-3) solid var(--ink);
  outline: var(--pen-1) solid var(--ink);
  outline-offset: 7px;
  display: grid;
  grid-template-rows: 1fr auto;
}
/* labelled zones on the sheet's top (1-8) and left (A-F) edges, between the two borders */
/* labelled zones just outside the outer border: 1-8 across the top, A-F down the left */
.zones { position: absolute; display: flex; pointer-events: none; font-family: var(--font-tech); font-size: 11px; line-height: 1; color: var(--ink-3); }
.zones span { flex: 1; display: grid; place-items: center; }
.zones span::after { content: attr(data-z); }
.zones-top { left: -8px; right: -8px; top: -24px; height: 16px; }
.zones-top span + span { border-left: var(--pen-1) solid var(--ink-3); }
.zones-left { top: -8px; bottom: -8px; left: -26px; width: 16px; flex-direction: column; }
.zones-left span + span { border-top: var(--pen-1) solid var(--ink-3); }
@media (max-width: 640px) { .zones-left { display: none; } }

.sheet-body {
  padding: clamp(22px, 4vw, 60px);
  display: grid; gap: clamp(28px, 3.6vw, 48px);
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-content: start;
}
.sheet-body > * { grid-column: 1 / -1; min-width: 0; }

.sheet-head { display: grid; gap: 18px; max-width: 980px; }

h1, h2, h3 { margin: 0; font-weight: 800; text-wrap: balance; }
h2 {
  font-size: clamp(2rem, 1.2rem + 3.4vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.012em;
  font-variation-settings: "wdth" 66;
  text-transform: uppercase;
}
h3 {
  font-family: var(--font-tech); font-weight: 400; text-transform: uppercase;
  letter-spacing: 0.06em; font-size: 1rem; color: var(--line);
}
.lede { margin: 0; font-size: clamp(1.08rem, 1rem + 0.35vw, 1.3rem); line-height: 1.5; color: var(--ink-2); max-width: var(--measure); text-wrap: pretty; }
p { margin: 0; text-wrap: pretty; }

/* title strip at the bottom of each sheet */
.strip {
  display: grid; grid-template-columns: auto 1fr auto;
  border-top: var(--pen-2) solid var(--ink);
  font-family: var(--font-tech); font-size: 0.95rem;
}
.strip > span { padding: 10px 16px; }
.strip-sn {
  border-right: var(--pen-2) solid var(--ink);
  font-size: 1.35rem; line-height: 1; padding-top: 12px; color: var(--ink);
  min-width: 108px; text-align: center;
}
.strip-t { text-transform: uppercase; letter-spacing: 0.08em; align-self: center; }
.strip-s { color: var(--ink-3); border-left: var(--pen-1) solid var(--ink); align-self: stretch; display: flex; align-items: center; }
@media (max-width: 560px) { .strip-s { display: none; } .strip { grid-template-columns: auto 1fr; } }

/* ---------- labels and keynotes ---------- */

.kn {
  position: relative; flex: none;
  display: inline-grid; place-items: center;
  width: 30px; height: 27px;
  font-family: var(--font-tech); font-size: 0.95rem; line-height: 1; color: var(--ink);
}
.kn::before {
  content: ""; position: absolute; inset: 0;
  background: var(--line);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 27'%3E%3Cpath d='M8 1.5H22L28.5 13.5L22 25.5H8L1.5 13.5Z' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center / 100% 100% no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 27'%3E%3Cpath d='M8 1.5H22L28.5 13.5L22 25.5H8L1.5 13.5Z' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center / 100% 100% no-repeat;
}

.keynotes { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.keynotes li { display: flex; gap: 14px; align-items: flex-start; }
.keynotes p { color: var(--ink-2); max-width: 52ch; }
.keynotes strong { color: var(--ink); font-weight: 700; }
.keynotes .kn { margin-top: -2px; }

.keynotes-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  column-gap: clamp(24px, 3vw, 44px); row-gap: 24px;
  border-top: var(--pen-1) solid var(--ink);
  padding-top: 26px;
}

/* ---------- details: hard-cropped screenshots ---------- */

.detail { margin: 0; display: grid; gap: 12px; align-content: start; }
.detail-frame {
  position: relative;
  border: var(--pen-2) solid var(--ink);
  padding: 8px;
  background: var(--paper);
}
.detail-frame::before { /* the detail's crop marks */
  content: ""; position: absolute; inset: -6px; pointer-events: none;
  background:
    linear-gradient(var(--ink), var(--ink)) left top / 14px var(--pen-1) no-repeat,
    linear-gradient(var(--ink), var(--ink)) left top / var(--pen-1) 14px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right bottom / 14px var(--pen-1) no-repeat,
    linear-gradient(var(--ink), var(--ink)) right bottom / var(--pen-1) 14px no-repeat;
}
.shot {
  display: block; width: 100%; height: auto;
  background: #0d0d0e;
  outline: var(--pen-1) solid var(--shot-edge);
}
video.shot { aspect-ratio: auto 960 / 573; }

.detail figcaption, .plan-cap, .cut-cap, .code-detail figcaption {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 0.95rem; line-height: 1.45; color: var(--ink-2); max-width: 70ch;
}

/* detail bubble: number over sheet */
.bubble {
  flex: none; display: inline-grid; grid-template-rows: 1fr 1fr; place-items: center;
  width: 46px; height: 46px; border-radius: 50%;
  border: var(--pen-2) solid var(--ink);
  font-family: var(--font-tech); font-size: 0.95rem; line-height: 1; color: var(--ink);
  background: linear-gradient(transparent calc(50% - 0.5px), var(--ink) calc(50% - 0.5px) calc(50% + 0.5px), transparent calc(50% + 0.5px));
  padding: 4px 0;
}
.bubble i { font-style: normal; font-size: 0.6875rem; letter-spacing: 0; }

.loop-btn {
  position: absolute; right: 16px; bottom: 16px;
  font-family: var(--font-tech); font-size: 0.85rem;
  color: #e9ecee; background: rgba(12, 14, 16, 0.86);
  border: var(--pen-1) solid rgba(233, 236, 238, 0.6);
  padding: 5px 12px; cursor: pointer;
}
.loop-btn:hover { border-color: #ff5f4f; }

/* ---------- A-000: hero ---------- */

.sheet-hero {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 400px);
  grid-template-rows: auto;
  min-height: min(860px, calc(100svh - var(--bar-h) - 40px));
}
.hero-plan {
  padding: clamp(18px, 2.6vw, 36px);
  display: grid; gap: 22px;
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
}
.plan { margin: 0; display: grid; gap: 12px; }
.plan-svg { width: 100%; max-height: 62svh; height: auto; display: block; overflow: visible; }

.plan-svg .property { fill: none; stroke: var(--ink); stroke-width: 1.2; stroke-dasharray: 18 5 3 5; }
.plan-svg .north circle { fill: none; stroke: var(--ink); stroke-width: 1; }
.plan-svg .north path { fill: var(--ink); }
.plan-svg .t-label, .section-cut .t-label { font-family: var(--font-tech); font-size: 13px; fill: var(--ink-2); letter-spacing: 0.02em; }
.plan-svg .t-dim, .section-cut .t-dim { fill: var(--ink-3); }
.plan-svg .t-room, .section-cut .t-room { font-family: var(--font-body); font-weight: 800; font-variation-settings: "wdth" 70; font-size: 20px; letter-spacing: 0.06em; fill: var(--ink); }
.plan-svg .t-num { font-family: var(--font-tech); font-size: 24px; fill: var(--ink); }
.plan-svg .t-dimtext, .section-cut .t-dimtext { font-family: var(--font-tech); font-size: 12.5px; fill: var(--dim); letter-spacing: 0.04em; }

.plan-svg .wall, .section-cut .wall { fill: none; stroke: var(--ink); stroke-width: 6; }
.plan-svg .room-fill { fill: var(--paper); stroke: var(--ink); stroke-width: 0.75; transition: fill 0.25s var(--ease); }
.plan-svg .room-off .wall { stroke-dasharray: 10 6; stroke-width: 3; }
.plan-svg .room-off .room-fill { stroke-dasharray: 4 4; }
.plan-svg .room { cursor: pointer; text-decoration: none; }
.plan-svg .room:focus { outline: none; }
.plan-svg .room:focus-visible .wall { stroke: var(--red); }
.plan-svg .room.is-active .room-fill { fill: url(#hatch); }
.plan-svg .hatch-line, .section-cut .hatch-line { stroke: var(--line-soft); stroke-width: 2; }
.plan-svg .kn-mark use { fill: var(--paper); stroke: var(--line); stroke-width: 1.4; }
.plan-svg .kn-mark text { font-family: var(--font-tech); font-size: 13px; fill: var(--ink); text-anchor: middle; dominant-baseline: central; }

.plan-svg .sync { fill: none; stroke: var(--line); stroke-width: 3; stroke-linecap: square; }
.plan-svg .sync-off { stroke-dasharray: 9 7; stroke-width: 2; opacity: 0.9; }
.plan-svg .sync.is-active { stroke: var(--red); }
.plan-svg .dim line, .section-cut .dim line { stroke: var(--dim); stroke-width: 1; }
.plan-svg .tick-line, .section-cut .tick-line { stroke: var(--dim); stroke-width: 1.4; }
.section-cut .cloud { fill: none; stroke: var(--red); stroke-width: 1.6; }
.section-cut .cloud-tag path { fill: var(--paper); stroke: var(--red); stroke-width: 1.4; }
.section-cut .cloud-tag text { font-family: var(--font-tech); font-size: 12px; fill: var(--red); }
.plan-svg .cut circle { fill: var(--paper); stroke: var(--ink); stroke-width: 1.2; }
.plan-svg .cut line { stroke: var(--ink); stroke-width: 1; }
.plan-svg .cut text { font-size: 10px; fill: var(--ink); }

/* the sync line draws itself once */
@media (prefers-reduced-motion: no-preference) {
  .js .plan-svg .sync-main { stroke-dasharray: 1; stroke-dashoffset: 1; }
  .js .plan-svg.is-drawn .sync-main { animation: draw 1.4s var(--ease) forwards; }
  .js .plan-svg.is-drawn .sync-main:nth-of-type(2) { animation-delay: 0.35s; }
  .js .plan-svg.is-drawn .sync-main:nth-of-type(3) { animation-delay: 0.7s; }
  .js .plan-svg .sync-off { opacity: 0; }
  .js .plan-svg.is-drawn .sync-off { animation: fade 0.6s 1.2s var(--ease) forwards; }
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade { to { opacity: 0.9; } }

.plan-more { display: none; justify-content: space-between; font-family: var(--font-tech); font-size: 0.85rem; color: var(--line); border-top: var(--pen-1) dashed var(--line); padding-top: 6px; }
.plan-cap .t-label { font-family: var(--font-tech); color: var(--line); text-transform: uppercase; letter-spacing: 0.05em; }
.plan-cap { display: block; }

.hero-keynotes {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 140px), 1fr));
  gap: 16px 22px; padding-top: 18px; border-top: var(--pen-1) solid var(--ink);
}
.hero-keynotes li { flex-direction: column; gap: 8px; }
.hero-keynotes li { transition: color 0.2s var(--ease); scroll-margin-top: 90px; }
.hero-keynotes p { font-size: 0.95rem; }
.hero-keynotes li.is-active .kn::before { background: var(--red); }
.hero-keynotes li.is-active strong { color: var(--red); }

/* title block */
.title-block {
  min-width: 0;
  border-left: var(--pen-3) solid var(--ink);
  display: grid; grid-template-rows: auto auto auto auto 1fr auto;
}
.tb-row, .tb-lede, .tb-actions, .tb-data, .tb-sheet { border-bottom: var(--pen-1) solid var(--ink); }
.tb-k {
  display: block; font-family: var(--font-tech); font-size: 0.8rem; color: var(--ink-3);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.tb-project { padding: 18px 22px 16px; }
h1 {
  font-size: clamp(3.2rem, 1.6rem + 3.6vw, 5.1rem);
  line-height: 0.86;
  font-variation-settings: "wdth" 62;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-top: 6px;
}
.tb-lede { padding: 16px 22px 18px; font-size: 1.08rem; line-height: 1.45; color: var(--ink-2); }
.tb-actions { display: grid; }
.act {
  display: grid; grid-template-columns: 1fr auto; column-gap: 12px;
  padding: 14px 22px; text-decoration: none;
  border-top: var(--pen-1) solid var(--ink);
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}
.act:first-child { border-top: 0; }
.act-k { font-weight: 750; font-size: 1.15rem; font-variation-settings: "wdth" 80; text-transform: uppercase; letter-spacing: 0.03em; }
.act-v { grid-row: 2; font-family: var(--font-tech); font-size: 0.9rem; color: var(--ink-3); }
.act-arrow { grid-row: 1 / 3; grid-column: 2; align-self: center; width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; transition: transform 0.25s var(--ease); }
.act:hover .act-arrow { transform: translateX(3px); }
.act:hover { background: var(--paper-2); }
.act-primary { background: var(--red); color: var(--red-ink); }
.act-primary .act-v { color: var(--red-ink); opacity: 0.92; }
.act-primary:hover { background: color-mix(in srgb, var(--red) 88%, var(--ink)); }
.act-primary:hover .act-arrow { transform: translateY(2px); }

.tb-data { margin: 0; padding: 12px 22px; display: grid; gap: 6px; align-content: start; }
.tb-data div { display: grid; grid-template-columns: 96px 1fr; gap: 10px; }
.tb-data dt { font-family: var(--font-tech); color: var(--ink-3); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; padding-top: 2px; }
.tb-data dd { margin: 0; font-size: 0.95rem; }

.tb-index { padding: 12px 22px 14px; border-bottom: var(--pen-1) solid var(--ink); align-self: stretch; }
.tb-index ol { list-style: none; margin: 8px 0 0; padding: 0; display: grid; font-family: var(--font-tech); }
.tb-index a { display: grid; grid-template-columns: 64px 1fr; padding: 4px 0; text-decoration: none; border-bottom: var(--pen-1) dashed var(--line-soft); }
.tb-index li:last-child a { border-bottom: 0; }
.tb-index a:hover { color: var(--red); }
.tb-index .sn { color: var(--line); }
.tb-sheet { display: grid; grid-template-columns: auto auto 1fr; align-items: end; gap: 0 14px; padding: 10px 22px 12px; border-bottom: 0; }
.tb-sheet .tb-k { grid-column: 1 / -1; }
.tb-sn { font-family: var(--font-tech); font-size: 2rem; line-height: 1; }
.tb-st { font-family: var(--font-tech); text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-2); }

@media (max-width: 640px) {
  .hero-keynotes li { flex-direction: row; }
  .plan-scroll { overflow-x: auto; padding-bottom: 8px; scrollbar-width: thin; scrollbar-color: var(--line) var(--paper-2); }
  .plan-more { display: flex; }
  .plan-svg { min-width: 640px; max-height: none; }
}
@media (max-width: 520px) {
  .hero-keynotes { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .sheet-hero { grid-template-columns: 1fr; min-height: 0; }
  .title-block { order: -1; border-left: 0; border-bottom: var(--pen-3) solid var(--ink); }
  .tb-index { display: none; }
  .tb-sheet { order: 99; }
  .tb-actions .act { padding-block: 13px; }
}

/* ---------- A-101 vault ---------- */

#vault .detail-wide { grid-column: 1 / -1; }
.detail-pair { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); align-items: start; }
.detail-phone .detail-frame { max-width: 300px; }
@media (max-width: 700px) {
  .detail-pair { grid-template-columns: 1fr; }
  .detail-phone .detail-frame { max-width: 240px; }
}

/* ---------- A-201 files ---------- */

.section-cut { margin: 0; display: grid; gap: 12px; }
.section-cut svg { width: 100%; height: auto; display: block; }
.section-cut .ground { stroke: var(--ink); stroke-width: 2.5; }
.section-cut .copy { stroke-width: 1.4; }
.section-cut .copy-ok { fill: var(--line-soft); stroke: var(--line); }
.section-cut .copy-un { fill: none; stroke: var(--ink-3); stroke-dasharray: 6 5; }
.section-cut .holder-off .wall { stroke-dasharray: 12 7; stroke-width: 3.5; }
.section-cut .t-on { fill: var(--ink); }
@media (max-width: 640px) {
  .cut-scroll { overflow-x: auto; padding-bottom: 8px; scrollbar-width: thin; }
  .section-cut svg { min-width: 620px; }
}

.files-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(28px, 4vw, 60px); align-items: start; }
.files-grid .keynotes { gap: 24px; }
.detail-col { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2vw, 28px); }
@media (max-width: 980px) {
  .files-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .detail-col { grid-template-columns: 1fr; max-width: 360px; }
}

/* ---------- A-301 sync: a schedule ---------- */

.schedule { border: var(--pen-2) solid var(--ink); }
.sch-row {
  display: grid; grid-template-columns: 76px minmax(160px, 260px) minmax(0, 1fr);
  border-top: var(--pen-1) solid var(--ink);
}
.sch-row:first-child { border-top: 0; }
.sch-row > span { padding: 16px 18px; border-left: var(--pen-1) solid var(--ink); }
.sch-row > span:first-child { border-left: 0; }
.sch-head { font-family: var(--font-tech); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; color: var(--ink-3); }
.sch-head > span { padding-block: 9px; }
.sch-mark { font-family: var(--font-tech); color: var(--line); font-size: 1.05rem; }
.sch-what { font-weight: 750; font-variation-settings: "wdth" 80; text-transform: uppercase; letter-spacing: 0.03em; }
.sch-row > span:last-child { color: var(--ink-2); max-width: 72ch; }
.sch-row:not(.sch-head):hover { background: var(--paper-2); }
@media (max-width: 760px) {
  .sch-head { display: none; }
  .sch-row { grid-template-columns: 64px 1fr; }
  .sch-row:nth-child(2) { border-top: 0; }
  .sch-row > span:last-child { grid-column: 1 / -1; border-left: 0; border-top: var(--pen-1) dashed var(--line-soft); padding-top: 12px; }
}

/* ---------- A-401 extensions ---------- */

.ext-body .detail-wide { grid-column: 1 / span 8; }
.ext-side { grid-column: 9 / -1; grid-row: span 2; display: grid; gap: 30px; align-content: start; }
.ext-notes { grid-column: 1 / span 8; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; }
@media (max-width: 1080px) {
  .ext-body .detail-wide, .ext-side, .ext-notes { grid-column: 1 / -1; }
  .ext-side { grid-row: auto; max-width: 520px; }
}
@media (max-width: 640px) { .ext-notes { grid-template-columns: 1fr; } }

/* ---------- M-101 studio ---------- */

.studio-body .sheet-head { grid-column: 1 / span 6; }
.apps {
  grid-column: 7 / -1; align-self: end;
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  border: var(--pen-2) solid var(--ink);
}
.apps li { padding: 18px 20px; border-top: var(--pen-1) solid var(--ink); }
.apps li:nth-child(-n+2) { border-top: 0; }
.apps li:nth-child(even) { border-left: var(--pen-1) solid var(--ink); }
.app-n {
  font-size: clamp(1.6rem, 1rem + 1.8vw, 2.6rem); font-weight: 850; line-height: 1;
  font-variation-settings: "wdth" 66; text-transform: uppercase; letter-spacing: 0.01em;
}
.detail-studio { grid-column: 1 / span 9; }
.studio-notes { grid-column: 10 / -1; align-self: end; }
@media (max-width: 980px) {
  .studio-body .sheet-head, .apps, .detail-studio, .studio-notes { grid-column: 1 / -1; }
}

/* ---------- S-101 self-host ---------- */

.host-body .sheet-head { grid-column: 1 / span 5; align-self: start; }
.notes-block { grid-column: 7 / -1; display: grid; gap: 18px; border: var(--pen-2) solid var(--ink); padding: clamp(18px, 2.4vw, 28px); }
@media (max-width: 1080px) { .host-body .sheet-head, .notes-block { grid-column: 1 / -1; } }

.code {
  margin: 0; padding: 18px 20px; overflow-x: auto;
  background: var(--paper-2);
  border: var(--pen-1) solid var(--ink);
  font-family: var(--font-tech); font-size: 0.98rem; line-height: 1.6; color: var(--ink);
  tab-size: 4;
}
.code code { border: 0; padding: 0; font-size: inherit; }
.code .c { color: var(--ink-3); }
.code .k { color: var(--line); }

.spec { margin: 0; display: grid; }
.spec div { display: grid; grid-template-columns: 130px 1fr; gap: 14px; padding: 10px 0; border-top: var(--pen-1) solid var(--line-soft); }
.spec dt { font-family: var(--font-tech); color: var(--line); }
.spec dd { margin: 0; color: var(--ink-2); }
@media (max-width: 480px) { .spec div { grid-template-columns: 1fr; gap: 2px; } }

.text-link { font-family: var(--font-tech); text-decoration: underline; text-decoration-color: var(--red); text-decoration-thickness: var(--pen-2); }
.text-link::after { content: " \2192"; }

/* ---------- D-101 framework ---------- */

.dev-body .sheet-head { grid-column: 1 / span 6; }
.code-detail { grid-column: 7 / -1; margin: 0; display: grid; gap: 12px; align-self: end; }
.code-detail figcaption { display: block; }
.dev-notes { grid-column: 9 / -1; grid-row: span 2; grid-template-columns: 1fr; align-self: start; }
.detail-dev { grid-column: 1 / span 8; }
.dev-cta { grid-column: 1 / span 8; display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
.act.act-inline { border: var(--pen-2) solid var(--ink); min-width: 240px; padding: 14px 18px; }
@media (max-width: 1080px) {
  .dev-body .sheet-head, .code-detail, .detail-dev, .dev-cta, .dev-notes { grid-column: 1 / -1; grid-row: auto; }
  .dev-notes { grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
}

/* ---------- issue ---------- */

.sheet-issue { grid-template-rows: auto; }
.issue {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  grid-template-areas: "h actions" "read actions";
  gap: 22px clamp(24px, 4vw, 60px);
  padding: clamp(24px, 4vw, 56px);
}
.issue h2 { grid-area: h; font-size: clamp(2.6rem, 1.4rem + 5vw, 6rem); }
.issue-actions { grid-area: actions; border: var(--pen-2) solid var(--ink); }
.issue-read { grid-area: read; display: flex; flex-wrap: wrap; gap: 12px 28px; align-self: end; }
@media (max-width: 820px) {
  .issue { grid-template-columns: 1fr; grid-template-areas: "h" "actions" "read"; }
}

/* ---------- colophon ---------- */

.colophon {
  max-width: 1480px; margin: clamp(28px, 4vw, 56px) auto 0; padding: 0 var(--gutter) 40px;
  display: grid; gap: 18px; font-size: 0.92rem; color: var(--ink-2);
}
.revisions { border-collapse: collapse; width: min(100%, 640px); font-family: var(--font-tech); }
.revisions caption { text-align: left; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); padding-bottom: 6px; font-size: 0.8rem; }
.revisions th, .revisions td { border: var(--pen-1) solid var(--ink); padding: 6px 10px; text-align: left; font-weight: 400; }
.revisions th { color: var(--ink-3); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }
.colophon-line { font-family: var(--font-tech); }

.defs { position: absolute; }

@media print {
  .bar, .loop-btn { display: none; }
}