/*
 * 鏈衛科技 ChainWarden — company site.
 * Colours follow the Crypto AML Agent product (navy "security operations" theme) so the
 * marketing site and the app feel like one brand. Risk colours always ship with a text label.
 */
:root {
  --page: #0b1220;
  --surface: #111a2c;
  --raised: #17233a;
  --sunken: #0d1628;
  --line: #22304a;
  --line-strong: #2e3d5a;
  --ink: #e7edf6;
  --ink-2: #b4c0d3;
  --ink-3: #8b98b0;
  --accent: #3987e5;
  --accent-strong: #5598e7;
  --accent-ink: #9ec5f4;
  --risk-low: #0ca30c;
  --risk-medium: #fab219;
  --risk-high: #ec835a;
  --risk-critical: #d03b3b;
  --chain-eth: #3987e5;
  --chain-bsc: #c98500;
  --chain-tron: #9085e9;
  --chain-btc: #d95926;

  --radius: 14px;
  --container: 1120px;
  --gutter: 16px;
  --header-h: 64px;
  --font-sans: 'Noto Sans TC', system-ui, -apple-system, 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  color-scheme: dark;
}

@media (min-width: 720px) {
  :root { --gutter: 24px; }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100dvh;
  overflow-x: hidden;
}

h1, h2, h3 { line-height: 1.3; margin: 0; font-weight: 700; letter-spacing: 0.01em; }
p { margin: 0; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { color: var(--ink); }
code, .mono { font-family: var(--font-mono); font-size: 0.9em; }
code { color: var(--accent-ink); }
ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(57, 135, 229, 0.35); }
:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 100;
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
}
.skip-link:focus { top: 12px; color: #fff; }

.eyebrow {
  color: var(--accent-ink);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.accent-text {
  background: linear-gradient(90deg, #5598e7, #9ec5f4 60%, #9085e9);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Buttons ---------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.2;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-strong); color: #fff; }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: rgba(17, 26, 44, 0.6); }
.btn-ghost:hover { border-color: var(--accent-strong); color: var(--ink); }
.btn-sm { min-height: 38px; padding: 6px 16px; font-size: 0.95rem; }

/* ---- Header ----------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 18, 32, 0.82);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 16px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark { width: 34px; height: 34px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-zh { font-weight: 700; font-size: 1.05rem; letter-spacing: 0.06em; }
.brand-en { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-3); letter-spacing: 0.04em; }

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a:not(.btn) {
  color: var(--ink-2);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.95rem;
}
.site-nav a:not(.btn):hover { color: var(--ink); background: var(--raised); }
.site-nav .btn { margin-left: 8px; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.2s, opacity 0.2s;
}
.nav-toggle[aria-expanded='true'] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded='true'] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .header-inner { flex-wrap: wrap; }
  /* Without JavaScript the links simply stay visible; the toggle only appears when it works. */
  .js .nav-toggle { display: inline-flex; }
  .site-nav {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding-bottom: 14px;
  }
  .js .site-nav { display: none; }
  .js .site-nav.is-open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px; }
  .site-nav .btn { margin: 8px 0 0; }
}

/* ---- Hero ------------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: 72px 0 64px;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  /* Faint ledger grid that fades out towards the edges. */
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero::after {
  content: '';
  position: absolute;
  z-index: -1;
  top: -180px;
  right: -120px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 135, 229, 0.22), transparent 65%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: 56px;
}

.hero h1 {
  font-size: clamp(2.1rem, 5.2vw, 3.5rem);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.lead { color: var(--ink-2); font-size: 1.08rem; max-width: 36em; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.chain-list { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 28px; color: var(--ink-3); font-size: 0.9rem; }
.chain-list li { display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-eth { background: var(--chain-eth); }
.dot-bsc { background: var(--chain-bsc); }
.dot-tron { background: var(--chain-tron); }
.dot-btc { background: var(--chain-btc); }

/* Product mock card */
.risk-card {
  margin: 0;
  padding: 22px;
  border-radius: 18px;
  background: linear-gradient(180deg, var(--raised), var(--surface));
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(85, 152, 231, 0.06);
}
.risk-card-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.addr { color: var(--ink-2); }
.chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 6px;
}
.chip-eth { color: #cfe1f8; background: rgba(57, 135, 229, 0.22); border: 1px solid rgba(57, 135, 229, 0.5); }
.tag {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--ink-3);
  border: 1px solid var(--line-strong);
  padding: 1px 8px;
  border-radius: 999px;
}

.gauge-wrap { position: relative; width: min(100%, 280px); margin: 18px auto 6px; }
.gauge { display: block; width: 100%; height: auto; overflow: visible; }
.gauge-track, .gauge-fill { fill: none; stroke-width: 10; stroke-linecap: round; }
.gauge-track { stroke: var(--sunken); }
.gauge-fill {
  stroke: var(--risk-critical);
  stroke-dasharray: 100;
  stroke-dashoffset: 8; /* 92 / 100 */
}
.js .gauge-fill { stroke-dashoffset: 100; transition: stroke-dashoffset 1.4s cubic-bezier(0.22, 1, 0.36, 1) 0.2s; }
.js .is-ready .gauge-fill { stroke-dashoffset: 8; }

.gauge-value {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.1;
}
.score { font-family: var(--font-mono); font-size: 2.6rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.level { font-size: 0.85rem; font-weight: 700; margin-top: 4px; }
.level-critical { color: #f08a8a; }

.hit-title { color: var(--ink-3); font-size: 0.8rem; margin: 18px 0 8px; letter-spacing: 0.08em; }
.hit-list { display: grid; gap: 8px; }
.hit-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  background: var(--sunken);
  border: 1px solid var(--line);
  font-size: 0.92rem;
}
.rid { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent-ink); flex: none; }
.hit-name { flex: 1; min-width: 0; }
.sev {
  flex: none;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 1px 8px;
  border-radius: 6px;
}
.sev-critical { color: #ffd6d6; background: rgba(208, 59, 59, 0.3); }
.sev-high { color: #ffe0d2; background: rgba(236, 131, 90, 0.26); }

.agent-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  color: var(--ink-2);
  font-size: 0.85rem;
}
.pulse {
  position: relative;
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--risk-low);
}
.pulse::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--risk-low);
  animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
  from { transform: scale(1); opacity: 0.7; }
  to { transform: scale(3); opacity: 0; }
}

@media (max-width: 900px) {
  .hero { padding: 48px 0 48px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .risk-card { max-width: 480px; }
}

/* ---- Stats ------------------------------------------------------------------------------ */
.stats { border-block: 1px solid var(--line); background: var(--surface); }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 12px;
}
.stat + .stat { border-left: 1px solid var(--line); }
.stat strong {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 500;
  line-height: 1.1;
  color: var(--ink);
}
.stat strong small { font-family: var(--font-sans); font-size: 0.45em; color: var(--ink-2); }
.stat span { color: var(--ink-3); font-size: 0.9rem; margin-top: 6px; }

@media (max-width: 640px) {
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--line); }
}

/* ---- Sections --------------------------------------------------------------------------- */
.section { padding: 96px 0; }
.section-alt { background: linear-gradient(180deg, var(--sunken), var(--page)); border-block: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2, .arch-copy h2, .cta h2 { font-size: clamp(1.6rem, 3.4vw, 2.25rem); }
.section-lead { color: var(--ink-2); margin-top: 16px; font-size: 1.04rem; }

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 32px; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 20px;
}
.feature { padding: 28px 26px; transition: border-color 0.2s, transform 0.2s; }
.feature:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.feature h3 { font-size: 1.15rem; margin: 18px 0 10px; }
.feature p { color: var(--ink-2); font-size: 0.95rem; }
.icon {
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(57, 135, 229, 0.14);
  border: 1px solid rgba(57, 135, 229, 0.3);
  fill: none;
  stroke: var(--accent-ink);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  counter-reset: none;
}
.step {
  position: relative;
  padding: 26px 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
}
.step-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-strong);
  margin-bottom: 14px;
}
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--ink-2); font-size: 0.94rem; }
.step:not(:last-child)::after {
  /* Connector arrow between steps on wide screens. */
  content: '';
  position: absolute;
  top: 36px;
  right: -15px;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--line-strong);
  border-right: 2px solid var(--line-strong);
  transform: rotate(45deg);
}

@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step::after { display: none; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
}

/* Rules */
.rule-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 20px;
}
.rule-group { padding: 24px; }
@media (min-width: 1000px) {
  /* Five groups: three across, then two wider cards, so the second row has no hole. */
  .rule-groups { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .rule-group { grid-column: span 2; }
  .rule-group:nth-child(n + 4) { grid-column: span 3; }
}
.rule-group h3 { font-size: 1.05rem; margin-bottom: 14px; }
.rule-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.rule-chips li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 8px;
  background: var(--sunken);
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 0.9rem;
}
.rule-chips b { font-family: var(--font-mono); font-weight: 500; font-size: 0.78rem; color: var(--accent-ink); }

.scoring {
  margin-top: 20px;
  padding: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 20px 32px;
  align-items: center;
}
.scoring h3 { font-size: 1.15rem; margin-bottom: 10px; }
.scoring-copy p { color: var(--ink-2); font-size: 0.95rem; }
.formula {
  margin: 0;
  padding: 18px 20px;
  border-radius: 10px;
  background: var(--sunken);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.9;
  overflow-x: auto;
  white-space: pre;
}
.levels {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
}
.lv {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  border-top: 4px solid;
  background: var(--sunken);
  font-weight: 700;
  font-size: 0.95rem;
}
.lv:first-child { border-radius: 0 0 0 8px; }
.lv:last-child { border-radius: 0 0 8px 0; }
.lv small { font-family: var(--font-mono); font-weight: 400; color: var(--ink-3); font-size: 0.78rem; }
.lv-low { border-color: var(--risk-low); color: #7fdc7f; }
.lv-medium { border-color: var(--risk-medium); color: #fcd27a; }
.lv-high { border-color: var(--risk-high); color: #f4b69c; }
.lv-critical { border-color: var(--risk-critical); color: #f08a8a; }

@media (max-width: 860px) {
  .scoring { grid-template-columns: minmax(0, 1fr); padding: 22px; }
}
@media (max-width: 520px) {
  .levels { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lv, .lv:first-child, .lv:last-child { border-radius: 0; }
}

/* Architecture */
.arch-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}
.arch-copy h2 { margin-bottom: 20px; }
.arch-copy p { color: var(--ink-2); }
.arch-copy p + p { margin-top: 14px; }
.stack { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.stack li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
}

.arch-diagram { display: flex; flex-direction: column; align-items: stretch; }
.node {
  padding: 18px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: var(--surface);
}
.node-label {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.node strong { display: block; font-size: 1.05rem; }
.node small { display: block; color: var(--ink-2); font-size: 0.85rem; margin-top: 2px; }
.node-client { border-left: 3px solid var(--chain-tron); }
.node-edge { border-left: 3px solid var(--accent); background: linear-gradient(180deg, var(--raised), var(--surface)); }
.node-data { border-left: 3px solid var(--chain-bsc); }
.sub-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 6px;
}
.sub-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sub-grid span {
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--sunken);
  border: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--ink-2);
  text-align: center;
  overflow-wrap: anywhere;
}
.link {
  position: relative;
  display: flex;
  justify-content: center;
  height: 44px;
}
.link::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  border-left: 2px dashed var(--line-strong);
}
.link span {
  position: relative;
  align-self: center;
  padding: 1px 10px;
  border-radius: 999px;
  background: var(--page);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3);
}

@media (max-width: 900px) {
  .arch-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
}
@media (max-width: 420px) {
  .sub-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* About */
.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 20px;
}
.value { padding: 28px 26px; }
.value-key {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-ink);
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(57, 135, 229, 0.14);
  margin-bottom: 14px;
}
.value h3 { font-size: 1.15rem; margin-bottom: 8px; }
.value p { color: var(--ink-2); font-size: 0.95rem; }

.audience {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.audience-title { color: var(--ink-3); font-size: 0.9rem; }
.audience ul { display: flex; flex-wrap: wrap; gap: 8px; }
.audience li {
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  font-size: 0.92rem;
}

/* CTA */
.cta { padding: 0 0 96px; }
.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px 40px;
  padding: 44px 40px;
  border-radius: 20px;
  border: 1px solid rgba(85, 152, 231, 0.35);
  background:
    radial-gradient(ellipse 60% 120% at 100% 0%, rgba(57, 135, 229, 0.25), transparent 70%),
    var(--surface);
}
.cta-inner > div:first-child { max-width: 560px; }
.cta p { color: var(--ink-2); margin-top: 10px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

@media (max-width: 720px) {
  .cta { padding-bottom: 64px; }
  .cta-inner { padding: 32px 22px; }
  .cta-actions, .cta-actions .btn { width: 100%; }
}

/* ---- Footer ----------------------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: var(--sunken); padding: 40px 0 32px; }
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px 32px;
  align-items: start;
}
.footer-brand .brand-en { margin-left: 4px; }
.footer-brand p { color: var(--ink-3); font-size: 0.9rem; margin-top: 4px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-links a { color: var(--ink-2); font-size: 0.92rem; }
.footer-links a:hover { color: var(--ink); }
.disclaimer, .copyright {
  grid-column: 1 / -1;
  color: var(--ink-3);
  font-size: 0.82rem;
  line-height: 1.8;
}
.disclaimer { padding-top: 20px; border-top: 1px solid var(--line); }

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---- 404 -------------------------------------------------------------------------------- */
.not-found {
  min-height: calc(100dvh - var(--header-h));
  display: grid;
  place-items: center;
  text-align: center;
  padding: 48px var(--gutter);
}
.not-found .code { font-family: var(--font-mono); font-size: clamp(4rem, 14vw, 7rem); line-height: 1; color: var(--accent-strong); }
.not-found h1 { font-size: 1.5rem; margin: 16px 0 10px; }
.not-found p { color: var(--ink-2); margin-bottom: 28px; }

/* ---- Reveal on scroll (only when JS is running) ------------------------------------------ */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .js .gauge-fill { stroke-dashoffset: 8; transition: none; }
  .pulse::after { animation: none; }
  .feature:hover { transform: none; }
}