:root {
  --bg: #06110c;
  --bg-2: #0a1a13;
  --panel: #0d2218;
  --panel-2: #10291c;
  --line: rgba(120, 232, 168, 0.2);
  --mint: #6ef3b0;
  --mint-2: #b9ffd8;
  --leaf: #1ea35a;
  --ink: #e9f8ef;
  --muted: #a7c3b4;
  --warn: #d7f5e4;
  --dock: 76px;
  --sans: Bahnschrift, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --shadow-plate: 0 0 0 1px rgba(120, 255, 190, 0.2), 0 30px 60px -36px rgba(40, 220, 130, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --shadow-soft: 0 16px 36px -28px rgba(30, 180, 100, 0.55);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--dock) + 12px);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  background-color: var(--bg);
  background-image:
    linear-gradient(180deg, rgba(6, 17, 12, 0.2), rgba(6, 17, 12, 0.94)),
    repeating-linear-gradient(90deg, rgba(110, 243, 176, 0.045) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(110, 243, 176, 0.035) 0 1px, transparent 1px 92px);
  min-height: 100vh;
}

img {
  display: block;
}

a {
  color: var(--mint);
}

p,
li,
dd {
  color: var(--muted);
}

h1,
h2,
h3,
dt,
summary,
.brand span,
.gate,
.colophon strong {
  color: var(--ink);
}

h1,
h2,
h3 {
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0;
}

p {
  margin: 0 0 14px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  background: var(--mint);
  color: #042014;
  padding: 8px 12px;
  z-index: 30;
}

.skip:focus {
  top: 12px;
}

.dock {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--dock);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 22px;
  background: rgba(6, 18, 12, 0.94);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 14px 34px -26px rgba(80, 220, 140, 0.8);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  min-width: 148px;
  height: 48px;
}

.brand img {
  width: 40px;
  height: 40px;
}

.brand span {
  font-size: 18px;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.dock-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.dock-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border-bottom: 2px solid transparent;
}

.dock-nav a:hover,
.dock-nav a:focus-visible {
  color: var(--mint-2);
  border-bottom-color: var(--leaf);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--line);
  background: #0c1c14;
  color: var(--mint);
  align-items: center;
  justify-content: center;
  padding: 0;
  box-shadow: var(--shadow-soft);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.gate {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 248px;
  height: 52px;
  flex: 0 0 auto;
  text-decoration: none;
  color: #042014;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: linear-gradient(115deg, #17884c 0%, #9dffc8 46%, #17884c 100%);
  background-size: 180% 100%;
  background-position: 0 0;
  clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
  box-shadow: 0 0 0 1px rgba(190, 255, 220, 0.35), 0 18px 34px -18px rgba(46, 220, 130, 0.9);
  transition: background-position 0.45s ease, transform 0.45s ease;
}

.gate-sm {
  width: 168px;
  height: 44px;
  margin-left: 8px;
}

.gate::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 -40%;
  width: 28%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  transform: skewX(-18deg);
  animation: sheen 3.8s ease-in-out infinite;
}

.gate:hover,
.gate:focus-visible {
  background-position: 100% 0;
  transform: translateY(-2px);
}

.gate:focus-visible,
.nav-toggle:focus-visible,
.dock-nav a:focus-visible,
.ask summary:focus-visible {
  outline: 2px solid var(--mint-2);
  outline-offset: 3px;
}

@keyframes sheen {
  0% { transform: translateX(0) skewX(-18deg); }
  55%,
  100% { transform: translateX(460%) skewX(-18deg); }
}

.stage-wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 18px;
}

.stage {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.75fr);
  gap: 34px;
  align-items: stretch;
}

.kicker {
  margin: 0 0 12px;
  color: var(--mint);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(40px, 6vw, 68px);
  max-width: 11ch;
  margin-bottom: 18px;
}

.lead {
  max-width: 62ch;
  font-size: 18px;
}

.short {
  color: var(--ink);
  font-weight: 650;
}

.checks {
  list-style: none;
  padding: 0;
  margin: 8px 0 20px;
  display: grid;
  gap: 8px;
}

.checks li {
  min-height: 28px;
  padding-left: 18px;
  position: relative;
}

.checks li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--leaf);
  box-shadow: 0 0 0 4px rgba(30, 163, 90, 0.18);
  position: absolute;
  left: 0;
  top: 8px;
}

.plate {
  min-height: 340px;
  height: 100%;
  padding: 26px 22px 22px;
  background: linear-gradient(165deg, var(--panel-2) 0%, #08160f 72%);
  box-shadow: var(--shadow-plate);
  position: relative;
  display: grid;
  grid-template-rows: 64px auto 1fr auto;
  gap: 12px;
}

.plate::before,
.plate::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  pointer-events: none;
}

.plate::before {
  top: 10px;
  left: 10px;
  border-top: 2px solid var(--mint);
  border-left: 2px solid var(--mint);
}

.plate::after {
  right: 10px;
  bottom: 10px;
  border-right: 2px solid var(--mint);
  border-bottom: 2px solid var(--mint);
}

.plate img {
  width: 64px;
  height: 64px;
}

.plate p {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
}

.plate ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.plate li {
  min-height: 26px;
  color: var(--muted);
}

.sheet {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 8px 22px;
  border-top: 1px solid var(--line);
  position: relative;
}

.sheet-index {
  color: var(--mint);
  font-size: 13px;
  letter-spacing: 0.18em;
  padding-top: 8px;
}

.sheet h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 14px;
}

.snap {
  font-size: 18px;
  color: var(--ink);
  max-width: 68ch;
}

.steps,
.plain,
.bento,
.spec,
.faq,
.sheet-body h3 {
  margin-top: 8px;
}

.steps {
  list-style: none;
  padding: 0;
  margin: 18px 0;
  display: grid;
  gap: 0;
  border-left: 2px solid rgba(110, 243, 176, 0.35);
}

.steps li {
  padding: 14px 0 14px 18px;
  position: relative;
  min-height: 64px;
}

.steps li::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--bg);
  border: 2px solid var(--mint);
  border-radius: 50%;
  position: absolute;
  left: -7px;
  top: 20px;
  box-shadow: 0 0 0 4px rgba(6, 17, 12, 1);
}

.plain {
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.plain li {
  min-height: 28px;
}

h3 {
  font-size: 22px;
  margin: 22px 0 8px;
}

.bento {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  grid-template-rows: auto auto;
  gap: 14px;
  margin: 18px 0;
}

.bento article {
  background: var(--panel);
  min-height: 180px;
  padding: 16px 16px 8px;
  box-shadow: 0 0 0 1px rgba(110, 243, 176, 0.14), var(--shadow-soft);
}

.bento article:first-child {
  grid-row: 1 / span 2;
  background:
    linear-gradient(180deg, rgba(30, 163, 90, 0.16), transparent 42%),
    var(--panel);
}

.spec {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 16px 0 8px;
}

.spec div {
  min-height: 112px;
  padding: 14px 14px 10px;
  background: #0c1f16;
  box-shadow: 0 0 0 1px rgba(110, 243, 176, 0.16), var(--shadow-soft);
}

.spec dt {
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 6px;
}

.spec dd {
  margin: 0;
}

.faq {
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.ask {
  border-top: 1px solid var(--line);
  padding: 4px 0 8px;
}

.ask:last-child {
  border-bottom: 1px solid var(--line);
}

.ask summary {
  cursor: pointer;
  list-style: none;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 650;
  color: var(--ink);
}

.ask summary::-webkit-details-marker {
  display: none;
}

.ask summary::after {
  content: "";
  width: 12px;
  height: 12px;
  flex: 0 0 12px;
  border-right: 2px solid var(--mint);
  border-bottom: 2px solid var(--mint);
  transform: rotate(45deg);
  margin-top: -4px;
}

.ask[open] summary::after {
  transform: rotate(225deg);
  margin-top: 4px;
}

.sheet-warn {
  background: linear-gradient(90deg, rgba(30, 163, 90, 0.08), transparent 28%);
}

.colophon {
  border-top: 1px solid var(--line);
  padding: 42px 0 56px;
  background: #07140e;
  box-shadow: inset 0 18px 40px -34px rgba(110, 243, 176, 0.7);
}

.colo-grid {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 28px;
}

.wordmark {
  font-size: 28px;
  letter-spacing: 0.14em;
  text-transform: lowercase;
  margin: 0 0 8px;
}

.colo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  margin-bottom: 16px;
}

.colo-links a {
  color: var(--mint-2);
  min-height: 24px;
}

.fine h3 {
  font-size: 18px;
}

.stamp {
  margin-top: 18px;
  color: var(--ink);
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .dock-nav {
    display: none;
    position: absolute;
    top: var(--dock);
    left: 0;
    right: 0;
    margin: 0;
    padding: 10px 14px 14px;
    background: #08160f;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px -24px rgba(0, 0, 0, 0.8);
    grid-template-columns: 1fr;
  }

  .dock-nav.is-open {
    display: grid;
  }

  .dock-nav a {
    height: 44px;
    border-bottom: 1px solid rgba(110, 243, 176, 0.1);
  }

  .gate-sm {
    display: none;
  }

  .stage,
  .sheet,
  .bento,
  .spec,
  .colo-grid {
    grid-template-columns: 1fr;
  }

  .plate {
    height: auto;
    min-height: 340px;
  }

  .bento article:first-child {
    grid-row: auto;
  }

  .sheet {
    padding: 36px 0;
  }

  .sheet-index {
    padding-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .gate,
  .gate::after {
    animation: none;
    transition: none;
  }
}