:root {
  --black: #090909;
  --near: #121212;
  --ink: #181818;
  --muted: #737373;
  --line: #d7d7d7;
  --pale: #eeeeee;
  --soft: #f7f7f4;
  --white: #ffffff;
  --red: #d71920;
  --orange: #f47b2a;
  --green: #70ad47;
  --blue: #4472c4;
  --sky: #5b9bd5;
  --yellow: #ffc000;
  --gray: #9b9b9b;
  --sans: "DM Sans", Arial, Helvetica, sans-serif;
  --display: "Bebas Neue", Impact, sans-serif;
  --mono: "DM Mono", Consolas, monospace;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background: var(--white);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 0 clamp(18px, 4vw, 44px);
  color: var(--white);
  background: rgba(9, 9, 9, 0.92);
  border-bottom: 1px solid #242424;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  color: var(--white);
  font-family: var(--display);
  font-size: 34px;
  letter-spacing: 2px;
  line-height: 1;
}

.brand-mark span {
  color: var(--red);
}

.brand-text {
  max-width: 190px;
  color: #8f8f8f;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.25;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 2px;
}

.site-nav a,
.header-action {
  padding: 8px 13px;
  border-radius: 3px;
  color: #bdbdbd;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.3px;
  text-transform: uppercase;
}

.site-nav a:hover,
.header-action:hover {
  color: var(--white);
  background: #222;
}

.header-action {
  border: 1px solid #383838;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 108px 24px 56px;
  color: var(--white);
  background: var(--black);
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto -10% -24% -10%;
  height: 58%;
  background: radial-gradient(ellipse at center, rgba(68, 114, 196, 0.28), transparent 58%);
  filter: blur(18px);
  opacity: 0.85;
}

.hero-3d {
  --rx: 0deg;
  --ry: 0deg;
  position: absolute;
  z-index: 0;
  left: 50%;
  top: 50%;
  width: min(76vw, 920px);
  height: min(62vw, 660px);
  transform: translate(-50%, -50%) rotateX(var(--rx)) rotateY(var(--ry));
  transform-style: preserve-3d;
  perspective: 1100px;
  pointer-events: none;
  opacity: 0.92;
  transition: transform 500ms ease;
}

.portal-scene {
  position: absolute;
  inset: 0;
  transform: rotateX(58deg) rotateZ(-34deg);
  transform-style: preserve-3d;
}

.portal-scene::before {
  content: "";
  position: absolute;
  left: 18%;
  right: 18%;
  top: 21%;
  bottom: 21%;
  border: 1px solid rgba(255,255,255,0.16);
  background:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px),
    rgba(255,255,255,0.045);
  background-size: 44px 44px;
  box-shadow:
    0 26px 90px rgba(0,0,0,0.46),
    inset 0 0 80px rgba(68,114,196,0.1);
  transform: translateZ(-16px);
}

.stage-rail {
  position: absolute;
  left: 18%;
  right: 18%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.48), transparent);
  transform: translateZ(24px);
  animation: railGlow 4s ease-in-out infinite;
}

.rail-one { top: 32%; }
.rail-two { top: 50%; animation-delay: 0.6s; }
.rail-three { top: 68%; animation-delay: 1.2s; }

.data-tower {
  position: absolute;
  left: 50%;
  top: 50%;
  width: clamp(150px, 20vw, 250px);
  height: clamp(150px, 20vw, 250px);
  transform: translate(-50%, -50%) translateZ(86px);
  transform-style: preserve-3d;
  animation: towerFloat 6s ease-in-out infinite;
}

.tower-layer {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255,255,255,0.28);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.18), rgba(255,255,255,0.03)),
    rgba(68,114,196,0.16);
  box-shadow: 0 24px 54px rgba(0,0,0,0.26);
  transform-style: preserve-3d;
}

.layer-one { transform: translateZ(0); }
.layer-two { transform: translate(18px, -18px) translateZ(32px); background-color: rgba(244,123,42,0.18); }
.layer-three { transform: translate(36px, -36px) translateZ(64px); background-color: rgba(112,173,71,0.16); }
.layer-four { transform: translate(54px, -54px) translateZ(96px); background-color: rgba(255,255,255,0.1); }

.tower-core {
  position: absolute;
  inset: 20%;
  display: grid;
  place-items: center;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.32);
  background: rgba(9,9,9,0.72);
  box-shadow: 0 0 40px rgba(255,255,255,0.08);
  font-family: var(--display);
  font-size: clamp(32px, 5vw, 64px);
  letter-spacing: 5px;
  transform: translate(54px, -54px) translateZ(122px);
}

.stage-node {
  position: absolute;
  min-width: 86px;
  padding: 10px 12px;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(9,9,9,0.66);
  box-shadow: 0 16px 36px rgba(0,0,0,0.28);
  backdrop-filter: blur(10px);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.8px;
  text-align: center;
  transform: translateZ(118px);
  animation: nodeFloat 5.2s ease-in-out infinite;
}

.stage-node::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  width: 1px;
  height: 46px;
  background: linear-gradient(rgba(255,255,255,0.4), transparent);
}

.node-quote { left: 18%; top: 26%; border-top-color: var(--orange); }
.node-plan { left: 32%; top: 17%; border-top-color: var(--gray); animation-delay: 0.4s; }
.node-design { right: 30%; top: 24%; border-top-color: var(--yellow); animation-delay: 0.8s; }
.node-tender { right: 16%; top: 44%; border-top-color: var(--sky); animation-delay: 1.2s; }
.node-construct { right: 29%; bottom: 18%; border-top-color: var(--green); animation-delay: 1.6s; }
.node-close { left: 23%; bottom: 24%; border-top-color: var(--blue); animation-delay: 2s; }

.hero-meta {
  position: absolute;
  top: 92px;
  color: #3f3f3f;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
}

.hero-meta-left {
  left: clamp(20px, 4vw, 44px);
}

.hero-meta-right {
  right: clamp(20px, 4vw, 44px);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(100%, 1120px);
  text-align: center;
}

.kicker,
.section-label,
.panel-label {
  margin: 0 0 14px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: 9px;
  line-height: 0.86;
}

.hero h1 span {
  display: block;
  font-size: clamp(92px, 17vw, 226px);
}

.hero h1 small {
  display: block;
  margin-top: 18px;
  color: #666;
  font-family: var(--sans);
  font-size: clamp(14px, 2vw, 22px);
  font-weight: 300;
  letter-spacing: 7px;
  text-transform: uppercase;
}

.hero-copy {
  max-width: 560px;
  margin: 32px auto 0;
  color: #868686;
  font-size: 14px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease, color 140ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-light {
  color: var(--black);
  background: var(--white);
  border-color: var(--white);
}

.btn-dark {
  color: var(--white);
  background: transparent;
  border-color: #333;
}

.btn-solid {
  color: var(--white);
  background: var(--black);
  border-color: var(--black);
}

.btn-ghost {
  color: var(--black);
  background: transparent;
}

.phase-wheel {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  width: min(100%, 760px);
  margin-top: 58px;
}

@keyframes railGlow {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.95; box-shadow: 0 0 28px rgba(255,255,255,0.24); }
}

@keyframes towerFloat {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -22px; }
}

@keyframes nodeFloat {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -14px; }
}

.hex-link {
  position: relative;
  width: 132px;
  height: 116px;
  display: grid;
  place-items: center;
  color: var(--white);
  text-align: center;
  transition: transform 180ms ease;
}

.hex-link::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(25% 0, 75% 0, 100% 50%, 75% 100%, 25% 100%, 0 50%);
  background: #1a1a1a;
  border: 1px solid #343434;
}

.hex-link:hover {
  transform: translateY(-7px);
}

.hex-link:hover::before {
  background: var(--white);
}

.hex-link:hover strong,
.hex-link:hover span {
  color: var(--black);
}

.hex-link strong,
.hex-link span {
  position: relative;
  z-index: 1;
  display: block;
}

.hex-link strong {
  font-family: var(--display);
  font-size: 18px;
  letter-spacing: 2px;
}

.hex-link span {
  margin-top: 5px;
  color: #575757;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 1px;
}

.section {
  position: relative;
  padding: 84px clamp(20px, 6vw, 84px);
  overflow: hidden;
}

.section-white {
  background:
    linear-gradient(90deg, rgba(0,0,0,0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(0,0,0,0.025) 1px, transparent 1px),
    var(--white);
  background-size: 52px 52px;
}

.section-soft {
  background:
    radial-gradient(circle at 12% 18%, rgba(244,123,42,0.11), transparent 26%),
    radial-gradient(circle at 90% 70%, rgba(68,114,196,0.12), transparent 30%),
    linear-gradient(90deg, rgba(0,0,0,0.035) 1px, transparent 1px),
    var(--soft);
  background-size: auto, auto, 52px 52px, auto;
}

.section-black {
  color: var(--white);
  background: var(--black);
}

.section-inner {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
}

.section-orbit {
  position: absolute;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(0,0,0,0.07);
  border-radius: 50%;
  pointer-events: none;
  transform: rotateX(66deg) rotateZ(24deg);
}

.section-orbit::before,
.section-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.section-orbit::before {
  inset: 54px;
  border: 1px solid rgba(0,0,0,0.05);
}

.section-orbit::after {
  width: 9px;
  height: 9px;
  top: 18%;
  right: 20%;
  background: var(--black);
  box-shadow: 0 0 20px rgba(0,0,0,0.22);
}

.orbit-a {
  top: -170px;
  right: -120px;
}

.orbit-b {
  bottom: -180px;
  left: -150px;
  border-color: rgba(68,114,196,0.14);
}

.orbit-c {
  top: 80px;
  left: -170px;
  border-color: rgba(244,123,42,0.13);
}

.orbit-d {
  right: -150px;
  bottom: -150px;
  border-color: rgba(112,173,71,0.14);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 42px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.section-header.inverse {
  border-color: #2a2a2a;
}

.section-header h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(42px, 7vw, 74px);
  font-weight: 400;
  letter-spacing: 3px;
  line-height: 0.95;
}

.section-number {
  color: var(--pale);
  font-family: var(--mono);
  font-size: clamp(42px, 8vw, 78px);
  line-height: 0.85;
}

.inverse .section-number {
  color: #252525;
}

.phase-grid,
.workflow-grid,
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: transparent;
  border: 1px solid var(--line);
}

.phase-card,
.workflow-card,
.doc-card {
  position: relative;
  background: rgba(255,255,255,0.92);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.phase-card {
  min-height: 176px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px;
}

.phase-card:hover,
.doc-card:hover {
  z-index: 2;
  background: #fff;
  transform: translateY(-7px) var(--card-tilt, rotateX(0) rotateY(0));
  box-shadow: 0 18px 44px rgba(0,0,0,0.12);
}

.phase-card::before,
.workflow-card::before,
.doc-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 3px solid transparent;
  pointer-events: none;
}

.phase-card:nth-child(1)::before,
.doc-card:nth-child(6n+1)::before { border-color: var(--orange); }
.phase-card:nth-child(2)::before,
.doc-card:nth-child(6n+2)::before { border-color: var(--gray); }
.phase-card:nth-child(3)::before,
.doc-card:nth-child(6n+3)::before { border-color: var(--yellow); }
.phase-card:nth-child(4)::before,
.doc-card:nth-child(6n+4)::before { border-color: var(--sky); }
.phase-card:nth-child(5)::before,
.doc-card:nth-child(6n+5)::before { border-color: var(--green); }
.phase-card:nth-child(6)::before,
.doc-card:nth-child(6n+6)::before { border-color: var(--blue); }

.phase-num,
.workflow-tag,
.doc-meta {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.phase-card h3,
.workflow-card h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 2px;
}

.phase-card p,
.workflow-card p,
.doc-card p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.phase-arrow {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  margin-top: auto;
  color: var(--white);
  background: var(--black);
  border-radius: 50%;
  transition: transform 160ms ease;
}

.phase-card:hover .phase-arrow {
  transform: translate(3px, -3px);
}

.plan-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  align-items: start;
  gap: 22px;
}

.master-card,
.quick-panel {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.88);
  box-shadow: 0 26px 68px rgba(0,0,0,0.12);
  backdrop-filter: blur(14px);
}

.master-card {
  position: relative;
  overflow: hidden;
}

.master-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.32) 48%, transparent 58%);
  transform: translateX(-120%);
  transition: transform 700ms ease;
}

.master-card:hover::after {
  transform: translateX(120%);
}

.master-preview {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: #f1f1f1;
  cursor: zoom-in;
}

.master-preview img {
  display: block;
  width: 100%;
  max-height: 660px;
  object-fit: contain;
  transition: transform 240ms ease;
}

.master-card:hover .master-preview img {
  transform: scale(1.012);
}

.master-info,
.quick-panel {
  padding: 22px;
  align-self: start;
}

.master-info {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  border-top: 1px solid var(--line);
}

.master-info h3,
.quick-panel h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: 2px;
}

.quick-links {
  display: grid;
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.quick-link {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  transition: padding 160ms ease, color 160ms ease;
}

.quick-link:hover {
  padding-left: 8px;
  color: var(--blue);
}

.workflow-card {
  display: flex;
  flex-direction: column;
  box-shadow: 0 14px 36px rgba(0,0,0,0.08);
  transform-style: preserve-3d;
}

.workflow-card:hover {
  z-index: 2;
  transform: translateY(-9px) var(--card-tilt, rotateX(1deg));
  box-shadow: 0 26px 70px rgba(0,0,0,0.15);
}

.workflow-card:nth-child(1)::before { border-color: var(--orange); }
.workflow-card:nth-child(2)::before { border-color: var(--blue); }
.workflow-card:nth-child(3)::before { border-color: var(--green); }
.workflow-card:nth-child(4)::before { border-color: var(--sky); }
}

.workflow-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  background: #efefef;
  cursor: zoom-in;
  overflow: hidden;
  position: relative;
}

.workflow-media::after {
  content: "";
  position: absolute;
  inset: auto 16px 16px auto;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(0,0,0,0.18);
  border-radius: 50%;
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(8px);
}

.workflow-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 220ms ease;
}

.workflow-card:hover img {
  transform: scale(1.02);
}

.ppt-tile {
  color: #555;
  font-family: var(--display);
  font-size: 46px;
  letter-spacing: 4px;
}

.workflow-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
}

.workflow-body .button-row,
.doc-actions,
.master-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.stage-tabs {
  display: flex;
  overflow-x: auto;
  border: 1px solid #303030;
  border-bottom: 0;
}

.stage-tab {
  min-height: 50px;
  padding: 13px 22px;
  color: #777;
  background: #111;
  border-right: 1px solid #303030;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
}

.stage-tab.active {
  color: var(--black);
  background: var(--white);
}

.stage-panel {
  min-height: 260px;
  border: 1px solid #303030;
  background:
    radial-gradient(circle at 80% 0%, rgba(68,114,196,0.18), transparent 34%),
    radial-gradient(circle at 8% 100%, rgba(244,123,42,0.13), transparent 28%),
    #111;
  box-shadow: 0 28px 90px rgba(0,0,0,0.28);
}

.stage-panel .doc-grid {
  border: 0;
  background: transparent;
}

.stage-panel .doc-card {
  color: var(--ink);
}

.library-bar {
  position: sticky;
  z-index: 3;
  top: 64px;
  display: grid;
  grid-template-columns: minmax(240px, 420px) minmax(0, 1fr);
  gap: 16px;
  align-items: end;
  margin-bottom: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.88);
  box-shadow: 0 16px 38px rgba(0,0,0,0.08);
  backdrop-filter: blur(14px);
}

.search {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.search input {
  min-height: 44px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--white);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-row button {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink);
  background: transparent;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
}

.filter-row button.active {
  color: var(--white);
  background: var(--black);
  border-color: var(--black);
}

.doc-card {
  min-height: 156px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
}

.doc-card h4 {
  position: relative;
  z-index: 1;
}

.workflow-library {
  display: grid;
  gap: 18px;
}

.library-group {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.92);
  box-shadow: 0 18px 48px rgba(0,0,0,0.08);
}

.library-group-head {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(0,0,0,0.035), transparent),
    #fff;
}

.library-node {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  color: var(--white);
  background: var(--black);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1px;
}

.library-group-head h3 {
  margin: 4px 0 0;
  font-family: var(--display);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: 2px;
}

.library-group-head strong {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
}

.stage-chain {
  position: relative;
  display: grid;
  gap: 0;
  padding: 8px 18px 18px;
}

.stage-chain::before {
  content: "";
  position: absolute;
  top: 28px;
  bottom: 34px;
  left: 43px;
  width: 1px;
  background: linear-gradient(var(--black), var(--line));
}

.library-stage {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding-top: 14px;
}

.stage-marker {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: start center;
}

.stage-marker span {
  width: 18px;
  height: 18px;
  margin-top: 16px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: var(--black);
  box-shadow: 0 0 0 1px var(--black);
}

.library-stage-body {
  border: 1px solid var(--line);
  background: #fff;
}

.library-stage-title {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: #f7f7f4;
}

.library-stage-title h4 {
  margin: 0;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 1.5px;
}

.library-stage-title small {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.ordered-files {
  display: grid;
}

.ordered-file {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 48px;
  padding: 9px 12px;
  border-top: 1px solid #ececec;
}

.ordered-file:first-child {
  border-top: 0;
}

.ordered-file:hover {
  background: #fbfbfb;
}

.file-order {
  color: #a0a0a0;
  font-family: var(--mono);
  font-size: 10px;
}

.ordered-file strong {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.ordered-file div {
  display: flex;
  gap: 7px;
}

.ordered-file a,
.ordered-file button {
  min-height: 30px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--black);
  background: transparent;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
}

.ordered-file button {
  color: var(--white);
  background: var(--black);
  border-color: var(--black);
}

.doc-card h4 {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.doc-actions {
  margin-top: auto;
}

.doc-actions .btn {
  min-height: 32px;
  padding: 6px 11px;
  font-size: 10px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 36px clamp(20px, 6vw, 84px);
  color: #777;
  background: var(--black);
  border-top: 1px solid #242424;
}

.footer-logo {
  color: var(--white);
  font-family: var(--display);
  font-size: 52px;
  letter-spacing: 5px;
}

.site-footer p {
  max-width: 420px;
  margin: 0;
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.8;
  letter-spacing: 1.5px;
  text-align: right;
  text-transform: uppercase;
}

.viewer {
  width: min(94vw, 1280px);
  max-height: 92vh;
  padding: 0;
  border: 1px solid #2b2b2b;
  color: var(--white);
  background:
    radial-gradient(circle at 80% 12%, rgba(68,114,196,0.18), transparent 28%),
    var(--black);
  box-shadow: 0 34px 120px rgba(0,0,0,0.5);
}

.viewer::backdrop {
  background: rgba(0, 0, 0, 0.88);
}

.viewer-top,
.viewer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 16px;
  border-bottom: 1px solid #242424;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.viewer-bottom {
  border-top: 1px solid #242424;
  border-bottom: 0;
}

.viewer-top button,
.viewer-bottom a,
.viewer-arrow {
  min-height: 34px;
  padding: 7px 12px;
  border: 1px solid #343434;
  color: var(--white);
  background: transparent;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
}

.viewer-body {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) 78px;
  align-items: center;
  min-height: 320px;
  max-height: 76vh;
}

.viewer-body img {
  width: 100%;
  max-height: 76vh;
  object-fit: contain;
  background: #f5f5f5;
}

.viewer-arrow:disabled {
  opacity: 0.35;
  cursor: default;
}

@media (max-width: 960px) {
  .site-header {
    position: sticky;
    height: auto;
    flex-wrap: wrap;
    padding-block: 12px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
  }

  .plan-layout,
  .library-bar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .brand-text,
  .header-action,
  .hero-meta {
    display: none;
  }

  .hero h1 {
    letter-spacing: 5px;
  }

  .hero h1 span {
    font-size: 96px;
  }

  .hex-link {
    width: 104px;
    height: 92px;
  }

  .section {
    padding-block: 58px;
  }

  .section-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .master-info,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer p {
    text-align: left;
  }

  .viewer-body {
    grid-template-columns: 1fr;
  }

  .viewer-arrow {
    display: none;
  }

  .library-group-head {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .library-group-head strong {
    grid-column: 2;
  }

  .library-node {
    width: 42px;
    height: 42px;
  }

  .ordered-file {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .ordered-file div {
    grid-column: 2;
  }
}