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

:root {
  --bg: #f7f6f3;
  --text: #1a1a1a;
  --muted: #444;
  --accent: #2a7a4b;
  --rule: #e0ddd8;
  --code-bg: #efefec;
  --code-text: #2a7a4b;
  --block-bg: #f0efe9;
  --block-border: #e0ddd8;
  --max: 900px;
  --page-pad-left: 34px;
  --page-pad-right: 40px;
  --rail-edge-gap: 16px;
  --rail-width: 156px;
  --rail-content-gap: 30px;
  --font: 'Instrument Sans', system-ui, sans-serif;
  --mono: 'SFMono-Regular', 'Consolas', monospace;
}

[data-theme="dark"] {
  --bg: #111;
  --text: #d8d5cf;
  --muted: #888;
  --accent: #5dba80;
  --rule: #222;
  --code-bg: #181818;
  --code-text: #5dba80;
  --block-bg: #141414;
  --block-border: #1e1e1e;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  transition: background 0.2s, color 0.2s;
  scroll-behavior: smooth;
  scrollbar-width: none;
}
html::-webkit-scrollbar { display: none; }

body {
  max-width: var(--max);
  margin: 0 auto;
  padding: 80px var(--page-pad-right) 146px var(--page-pad-left);
  line-height: 1.75;
}

@media (max-width: 600px) {
  body { padding: 48px 20px 112px; }
}

header { margin-bottom: 72px; }

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.left-rail {
  position: fixed;
  top: 84px;
  left: max(var(--rail-edge-gap), calc((100vw - var(--max)) / 2 - (var(--rail-width) + var(--rail-content-gap))));
  width: var(--rail-width);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 10;
}

@media (min-width: 981px) and (max-width: 1304px) {
  body {
    margin-left: calc(var(--rail-edge-gap) + var(--rail-width) + var(--rail-content-gap) - var(--page-pad-left));
    margin-right: 0;
  }
  .left-rail { left: var(--rail-edge-gap); }
}

.rail-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.theme-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  width: fit-content;
  background: none;
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.theme-chip:hover { color: var(--accent); border-color: var(--accent); }

.theme-chip svg {
  width: 12px;
  height: 12px;
  display: block;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-chip .icon-sun { display: none; }
[data-theme="dark"] .theme-chip .icon-sun { display: block; }
[data-theme="dark"] .theme-chip .icon-moon { display: none; }

.left-rail nav { display: block; width: 100%; }

.section-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section-nav a {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  opacity: 0.8;
  transition: color 0.15s, opacity 0.15s;
}
.section-nav a:hover { color: var(--accent); opacity: 1; }
.section-nav a.is-active { color: var(--accent); opacity: 1; }

.wordmark {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 320px;
  min-width: 0;
}

.utility-btn {
  background: none;
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 11px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
  flex: 0 0 auto;
  text-decoration: none;
}
.utility-btn:hover { color: var(--accent); border-color: var(--accent); }

section { scroll-margin-top: 100px; }

h1 {
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: normal;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  max-width: 760px;
}

.lede {
  font-size: 19px;
  color: var(--muted);
  line-height: 1.65;
  max-width: 640px;
}

hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 60px 0;
}

h2 {
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

p {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 20px;
  max-width: 680px;
  opacity: 0.85;
}

p a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  transition: border-color 0.15s;
}
p a:hover { border-bottom-color: var(--accent); }

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1px 5px;
  border-radius: 3px;
}

/* Server list */
.server-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 680px;
}

.server-card {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 24px 28px;
  background: color-mix(in srgb, var(--block-bg) 60%, transparent);
  transition: border-color 0.18s;
}

.server-card--featured {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--rule) 60%);
  background: color-mix(in srgb, var(--accent) 5%, var(--block-bg) 95%);
}

.server-card--placeholder {
  opacity: 0.65;
}

.server-card-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.server-name {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.server-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.8;
}

.server-desc {
  font-size: 15px;
  color: var(--text);
  opacity: 0.8;
  line-height: 1.65;
  margin-bottom: 16px;
  max-width: none;
}

.server-desc:last-child { margin-bottom: 0; }

.server-links {
  display: flex;
  gap: 16px;
}

.server-links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.15s;
}
.server-links a:hover { opacity: 0.7; }

/* Mobile */
@media (max-width: 980px) {
  .left-rail {
    position: fixed;
    top: max(8px, env(safe-area-inset-top));
    left: auto;
    right: 12px;
    width: calc(100vw - 24px);
    max-width: 460px;
    background: transparent;
    gap: 8px;
    z-index: 30;
  }

  .rail-controls {
    justify-content: flex-end;
    border: 1px solid var(--rule);
    border-radius: 9px;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(8px);
    padding: 8px 10px;
    box-shadow: 0 8px 28px color-mix(in srgb, #000 22%, transparent);
  }

  .left-rail nav { display: none; }

  header { margin-top: 68px; }
}

@media (max-width: 700px) {
  .top-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 22px;
  }
  header { margin-top: 44px; margin-bottom: 54px; }

  .server-card { padding: 18px 20px; }
}