:root {
  color-scheme: dark;
  --bg: #000300;
  --green: #55ee48;
  --green-bright: #7cff6f;
  --green-dim: rgba(85, 238, 72, 0.52);
  --green-soft: rgba(85, 238, 72, 0.23);
  --amber: #ffbf00;
  --amber-soft: rgba(255, 191, 0, 0.13);
  --text: #d7d9d0;
  --muted: #989e94;
  --line: rgba(85, 238, 72, 0.58);
  --line-soft: rgba(85, 238, 72, 0.25);
  --mono: "Courier New", "Lucida Console", Monaco, monospace;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  background: var(--bg);
  scroll-behavior: smooth;
  overscroll-behavior: none;
}

body {
  min-width: 320px;
  height: 100vh;
  height: 100svh;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 24%, rgba(85, 238, 72, 0.07), transparent 33rem),
    linear-gradient(180deg, #000000 0%, #020702 58%, #000000 100%);
  color: var(--text);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.48;
  letter-spacing: 0;
  text-rendering: geometricPrecision;
  overscroll-behavior: none;
  -webkit-text-size-adjust: 100%;
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  content: "";
  pointer-events: none;
}

body::before {
  z-index: 10;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.032) 0,
      rgba(255, 255, 255, 0.032) 1px,
      transparent 1px,
      transparent 5px
    );
  mix-blend-mode: screen;
  opacity: 0.55;
}

body::after {
  z-index: 11;
  background: radial-gradient(ellipse at center, transparent 0%, transparent 60%, rgba(0, 0, 0, 0.72) 100%);
}

a,
button {
  color: inherit;
  font: inherit;
}

a {
  text-decoration: none;
}

pre {
  margin: 0;
  white-space: pre-wrap;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  background: var(--amber);
  color: #060400;
  font-weight: 700;
}

.skip-link:focus {
  top: 1rem;
}

.crt-shell {
  position: relative;
  z-index: 1;
  isolation: isolate;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  width: calc(100% - 44px);
  height: calc(100vh - 44px);
  height: calc(100svh - 44px);
  min-height: 0;
  margin: 22px auto;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background:
    linear-gradient(rgba(85, 238, 72, 0.023) 1px, transparent 1px) 0 0 / 100% 9px,
    linear-gradient(180deg, rgba(0, 17, 4, 0.79), rgba(0, 4, 1, 0.97));
  box-shadow:
    inset 0 0 0 1px rgba(85, 238, 72, 0.12),
    inset 0 0 50px rgba(85, 238, 72, 0.055),
    0 0 0 1px rgba(0, 0, 0, 0.9),
    0 0 34px rgba(85, 238, 72, 0.12);
  overflow: hidden;
}

.menu-toggle {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
  pointer-events: none;
}

.terminal-topbar {
  position: relative;
  z-index: 4;
  grid-row: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  min-height: 64px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(0, 0, 0, 0.22);
}

.terminal-brand,
.terminal-path,
.terminal-clock {
  min-width: 0;
  color: var(--green);
  text-shadow: 0 0 12px rgba(85, 238, 72, 0.42);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.terminal-brand {
  justify-self: start;
}

.terminal-path {
  justify-self: center;
  color: var(--green-dim);
}

.terminal-clock {
  justify-self: end;
  color: var(--green-dim);
}

.menu-button {
  display: none;
}

.tab-strip {
  grid-row: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--line-soft);
}

.tab-link {
  min-width: 0;
  min-height: 54px;
  padding: 15px 26px 0;
  border-right: 1px solid var(--line-soft);
  background: rgba(0, 0, 0, 0.24);
  color: var(--green-dim);
  font-size: 1.02rem;
  text-align: left;
  text-transform: lowercase;
  transition: color 160ms ease, background 160ms ease, text-shadow 160ms ease;
}

.tab-link:last-child {
  border-right: 0;
}

.tab-link::before {
  color: var(--green-dim);
  content: "./";
}

.tab-link:hover,
.tab-link:focus-visible,
.tab-link[aria-current="page"] {
  background: rgba(0, 22, 4, 0.7);
  color: var(--green-bright);
  outline: none;
  text-shadow: 0 0 14px rgba(85, 238, 72, 0.52);
}

.terminal-workspace {
  position: relative;
  z-index: 1;
  grid-row: 3;
  min-height: 0;
  padding: clamp(18px, 2.4svh, 28px) clamp(20px, 1.9vw, 28px) 0;
  overflow: hidden;
}

.terminal-box,
.ascii-card,
.seo-doc {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.32);
  box-shadow:
    inset 0 0 24px rgba(85, 238, 72, 0.055),
    0 0 22px rgba(85, 238, 72, 0.13);
}

.terminal-box {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.home-page {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  height: 100%;
  min-height: 0;
}

.terminal-left,
.terminal-right {
  min-width: 0;
  min-height: 0;
  padding: clamp(24px, 3svh, 38px) clamp(28px, 3vw, 48px);
  overflow: hidden;
}

.terminal-left {
  display: grid;
  align-content: center;
}

.terminal-right {
  border-left: 1px solid var(--line-soft);
}

.ascii-logo {
  color: var(--green-bright);
  font-size: clamp(0.74rem, 1.02vw, 1rem);
  font-weight: 700;
  line-height: 1.02;
  text-shadow:
    0 0 8px rgba(85, 238, 72, 0.72),
    0 0 18px rgba(85, 238, 72, 0.28);
}

.terminal-copy {
  display: grid;
  gap: clamp(7px, 1.1svh, 12px);
  margin-top: clamp(18px, 2.8svh, 28px);
  color: var(--text);
  font-size: clamp(0.9rem, 1.08vw, 1.1rem);
}

.hero-title {
  margin: 0;
  color: var(--green);
  font-size: inherit;
  font-weight: 400;
  line-height: inherit;
}

.green {
  color: var(--green);
}

.muted {
  color: var(--muted);
}

.command-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  width: min(100%, 650px);
  min-height: clamp(54px, 7svh, 76px);
  margin-top: clamp(18px, 3svh, 34px);
  padding: 0 22px;
  border: 1px solid var(--amber);
  border-radius: 4px;
  background: var(--amber-soft);
  color: var(--amber);
  text-shadow: 0 0 16px rgba(255, 191, 0, 0.72);
  box-shadow:
    inset 0 0 26px rgba(255, 191, 0, 0.06),
    0 0 28px rgba(255, 191, 0, 0.23);
}

.command-link:hover,
.command-link:focus-visible {
  background: rgba(255, 191, 0, 0.18);
  outline: none;
}

.command-link .cmd {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.command-link .enter {
  color: rgba(255, 191, 0, 0.62);
}

.terminal-window-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(18px, 3svh, 30px);
  color: var(--green);
}

.code-lines {
  display: grid;
  gap: clamp(7px, 1.18svh, 12px);
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text);
  font-size: clamp(0.86rem, 1.04vw, 1.06rem);
}

.code-line {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.sigil {
  flex: 0 0 auto;
  color: var(--green);
}

.ok {
  color: var(--green);
}

.cursor {
  display: inline-block;
  width: 10px;
  height: 18px;
  background: var(--green);
  box-shadow: 0 0 10px rgba(85, 238, 72, 0.64);
  vertical-align: -4px;
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.modules {
  min-height: 0;
  padding: clamp(16px, 2svh, 22px) clamp(22px, 2vw, 28px) clamp(16px, 2.4svh, 24px);
}

.section-title {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  margin-bottom: clamp(12px, 1.8svh, 18px);
  color: var(--green);
  font-size: clamp(0.86rem, 1vw, 1.02rem);
  text-transform: uppercase;
}

.section-title::after {
  display: block;
  height: 1px;
  background: var(--line-soft);
  content: "";
}

.ascii-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 22px);
}

.ascii-card {
  min-height: clamp(78px, 10svh, 106px);
  padding: clamp(12px, 1.7svh, 18px);
  color: var(--muted);
  font-size: clamp(0.78rem, 0.95vw, 0.96rem);
  overflow: hidden;
}

.ascii-card b {
  color: var(--green);
  font-weight: 400;
}

.ascii-card pre {
  line-height: 1.32;
}

.seo-doc {
  height: 100%;
  min-height: 0;
  padding: clamp(24px, 4svh, 58px) clamp(24px, 5vw, 72px);
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--green-soft) transparent;
}

.seo-doc::-webkit-scrollbar {
  width: 8px;
}

.seo-doc::-webkit-scrollbar-thumb {
  background: var(--green-soft);
}

.doc-stamp {
  display: inline-block;
  margin-bottom: clamp(18px, 2.6svh, 28px);
  color: var(--green);
}

.doc-stamp::before {
  content: "[";
}

.doc-stamp::after {
  content: "]";
}

.seo-doc h1 {
  max-width: 980px;
  margin: 0 0 clamp(18px, 3svh, 28px);
  color: var(--green);
  font-size: clamp(1.65rem, 4.8vw, 4rem);
  font-weight: 400;
  line-height: 1.08;
}

.seo-doc h2 {
  margin: clamp(28px, 4svh, 42px) 0 10px;
  color: var(--green);
  font-size: clamp(1.05rem, 2vw, 1.55rem);
  font-weight: 400;
}

.seo-doc p,
.seo-doc li {
  max-width: 1040px;
  color: var(--text);
  font-size: clamp(0.96rem, 1.18vw, 1.15rem);
}

.seo-doc p {
  margin: 0 0 14px;
}

.seo-doc ul,
.seo-doc ol {
  display: grid;
  gap: 8px;
  max-width: 1020px;
  margin: 12px 0 0;
  padding-left: 1.25rem;
}

.seo-doc strong {
  color: var(--green-bright);
  font-weight: 400;
}

.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(26px, 4svh, 44px);
}

.doc-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  color: var(--green);
}

.doc-link.primary {
  border-color: var(--amber);
  background: var(--amber-soft);
  color: var(--amber);
}

.terminal-footer {
  grid-row: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 46px;
  padding: 0 28px;
  border-top: 1px solid var(--line-soft);
  color: var(--green);
  white-space: nowrap;
}

@media (max-width: 1120px) {
  .ascii-logo {
    font-size: clamp(0.58rem, 1.16vw, 0.82rem);
  }

  .terminal-left,
  .terminal-right {
    padding: 28px;
  }
}

@media (max-width: 860px) {
  .crt-shell {
    width: min(calc(100% - 28px), 720px);
    height: calc(100vh - 28px);
    height: calc(100svh - 28px);
    margin: 14px auto;
  }

  .terminal-topbar {
    grid-template-columns: 1fr auto;
    min-height: 66px;
    padding: 0 22px;
  }

  .terminal-path,
  .terminal-clock {
    display: none;
  }

  .menu-button {
    display: block;
    width: 44px;
    height: 32px;
    padding: 0;
    cursor: pointer;
    position: relative;
    z-index: 32;
  }

  .menu-button span {
    display: block;
    position: absolute;
    left: 2px;
    right: 2px;
    top: 50%;
    height: 3px;
    background: var(--green);
    box-shadow: 0 0 9px rgba(85, 238, 72, 0.56);
    transform-origin: center;
    transition: none;
  }

  .menu-button span:nth-child(1) {
    transform: translateY(-11px);
  }

  .menu-button span:nth-child(2) {
    transform: translateY(-50%);
  }

  .menu-button span:nth-child(3) {
    transform: translateY(8px);
  }

  .tab-strip {
    display: none;
    grid-template-columns: 1fr;
  }

  .menu-toggle:checked ~ .tab-strip {
    display: grid;
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    z-index: 30;
    background:
      linear-gradient(rgba(85, 238, 72, 0.035) 1px, transparent 1px) 0 0 / 100% 9px,
      #000500;
    border-top: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line);
    box-shadow:
      0 22px 32px rgba(0, 0, 0, 0.94),
      0 0 28px rgba(85, 238, 72, 0.16);
  }

  .menu-toggle:checked ~ .terminal-topbar .menu-button span:nth-child(1) {
    transform: translateY(-50%) rotate(45deg);
  }

  .menu-toggle:checked ~ .terminal-topbar .menu-button span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle:checked ~ .terminal-topbar .menu-button span:nth-child(3) {
    transform: translateY(-50%) rotate(-45deg);
  }

  .tab-link {
    min-height: 48px;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
    padding: 12px 22px 0;
    background: #000500;
  }

  .tab-link:hover,
  .tab-link:focus-visible,
  .tab-link[aria-current="page"] {
    background: rgba(0, 28, 5, 0.98);
  }

  .terminal-workspace {
    padding: 14px 14px 0;
  }

  .terminal-box {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 12px;
    border: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
  }

  .terminal-left,
  .terminal-right {
    padding: 18px 22px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.32);
    box-shadow:
      inset 0 0 24px rgba(85, 238, 72, 0.055),
      0 0 22px rgba(85, 238, 72, 0.13);
  }

  .terminal-right {
    border-left: 1px solid var(--line);
  }

  .terminal-left {
    align-content: start;
  }

  .ascii-logo {
    font-size: clamp(0.42rem, 1.62vw, 0.68rem);
  }

  .terminal-copy {
    margin-top: 12px;
    gap: 4px;
    font-size: clamp(0.78rem, 2.65vw, 0.96rem);
  }

  .command-link {
    min-height: 48px;
    margin-top: 12px;
    padding: 0 14px;
    gap: 10px;
  }

  .terminal-window-title {
    margin-bottom: 10px;
    font-size: clamp(0.8rem, 2.8vw, 0.94rem);
  }

  .code-lines {
    gap: 4px;
    font-size: clamp(0.75rem, 2.65vw, 0.88rem);
    line-height: 1.34;
  }

  .modules {
    padding: 12px 14px 14px;
  }

  .ascii-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .ascii-card {
    min-height: 58px;
    padding: 10px 12px;
    font-size: clamp(0.72rem, 2.5vw, 0.84rem);
  }

  .terminal-footer {
    min-height: 42px;
    padding: 0 22px;
    font-size: clamp(0.74rem, 2.6vw, 0.92rem);
  }
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .crt-shell {
    width: calc(100% - 24px);
    height: calc(100vh - 24px);
    height: calc(100svh - 24px);
    margin: 12px auto;
  }

  .terminal-topbar {
    min-height: clamp(48px, 6.4svh, 58px);
    padding: 0 18px;
  }

  .menu-toggle:checked ~ .tab-strip {
    top: auto;
  }

  .terminal-brand {
    font-size: 1rem;
  }

  .terminal-box {
    grid-template-rows: auto minmax(0, 1fr);
  }

  .terminal-left,
  .terminal-right {
    padding: 14px 18px;
  }

  .ascii-logo {
    font-size: clamp(0.32rem, 1.45vw, 0.48rem);
    line-height: 1.03;
  }

  .terminal-copy {
    margin-top: 8px;
    font-size: clamp(0.7rem, 2.7vw, 0.86rem);
    line-height: 1.32;
  }

  .terminal-copy .optional,
  .terminal-copy .hide-small {
    display: none;
  }

  .command-link {
    min-height: clamp(42px, 6.2svh, 54px);
    font-size: clamp(0.78rem, 3vw, 0.95rem);
  }

  .command-link .enter {
    display: none;
  }

  .terminal-window-title {
    margin-bottom: 8px;
  }

  .code-lines {
    gap: 2px;
    font-size: clamp(0.66rem, 2.72vw, 0.82rem);
    line-height: 1.28;
  }

  .code-line {
    gap: 7px;
  }

  .modules {
    padding: 10px 14px 12px;
  }

  .section-title {
    margin-bottom: 8px;
    font-size: clamp(0.72rem, 2.6vw, 0.88rem);
  }

  .ascii-card {
    min-height: clamp(48px, 7.2svh, 64px);
    padding: 8px 10px;
  }

  .seo-doc {
    padding: 20px 18px 26px;
  }

  .terminal-footer {
    min-height: clamp(38px, 5.6svh, 46px);
  }
}

@media (max-width: 520px) and (max-height: 740px) {
  .terminal-box {
    grid-template-rows: auto minmax(0, 1fr);
  }

  .terminal-right {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .terminal-window-title {
    margin-bottom: 6px;
  }

  .code-lines {
    gap: 1px;
    line-height: 1.22;
  }

  .code-line.optional {
    display: none;
  }

  .code-lines .code-line:last-child {
    display: none;
  }

  .ascii-grid {
    gap: 6px;
  }

  .modules {
    padding-top: 8px;
    padding-bottom: 10px;
  }

  .section-title {
    margin-bottom: 6px;
  }

  .ascii-card {
    min-height: 42px;
    padding: 6px 10px;
    font-size: clamp(0.64rem, 2.25vw, 0.74rem);
    line-height: 1.18;
    overflow: visible;
  }
}

@media (max-width: 520px) and (max-height: 660px) {
  .code-lines .code-line:nth-child(n+5) {
    display: none;
  }
}