/* ==========================================================================
   Ledger Live Desktop Guide — home page styles
   Dark, editorial, high-contrast. No framework, no build step.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --ink-950: #05070d;
  --ink-900: #080c15;
  --ink-850: #0c1220;
  --ink-800: #111a2c;

  --text: #e9eef8;
  --text-soft: #b9c4d6;
  --muted: #8d9ab1;

  --mint: #46e5c4;
  --mint-deep: #17b79a;
  --violet: #8b7cff;
  --amber: #ffcf6b;

  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.055);

  --radius: 18px;
  --radius-lg: 26px;
  --wrap: 1180px;
  --header-h: 76px;

  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --shadow: 0 28px 70px -30px rgba(0, 0, 0, 0.85);
  --ease: cubic-bezier(0.22, 0.68, 0.35, 1);
}

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

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

body {
  margin: 0;
  background: var(--ink-950);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
svg { display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.35rem, 5.4vw, 4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.65rem); }
h3 { font-size: clamp(1.08rem, 1.6vw, 1.25rem); }
h4 { font-size: 0.95rem; letter-spacing: 0.02em; text-transform: uppercase; color: var(--text-soft); }

p { margin: 0 0 1.1em; color: var(--text-soft); }
p:last-child { margin-bottom: 0; }

a { color: var(--mint); text-decoration: none; }
a:hover { color: #7ff0d8; }

ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(70, 229, 196, 0.28); }

:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--mint);
  color: #04120f;
  padding: 0.7rem 1.1rem;
  border-radius: 0 0 10px 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---------- Ambient background ---------- */
.page-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(70, 229, 196, 0.13), transparent 62%),
    radial-gradient(760px 520px at 92% 4%, rgba(139, 124, 255, 0.14), transparent 60%),
    radial-gradient(900px 700px at 50% 118%, rgba(23, 183, 154, 0.08), transparent 65%),
    linear-gradient(180deg, #05070d 0%, #070b13 45%, #05070d 100%);
}
.page-glow::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 72%);
}

/* ---------- Layout helpers ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.35rem;
}
.wrap.narrow { max-width: 860px; }

.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section-alt {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.022) 18%, rgba(255, 255, 255, 0.022) 82%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-tight { padding-bottom: clamp(3rem, 6vw, 5rem); }

.section-head { max-width: 720px; margin-bottom: clamp(2.2rem, 4vw, 3.4rem); }
.section-sub { font-size: 1.04rem; max-width: 62ch; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mint);
  margin: 0 0 1rem;
}

.grad {
  background: linear-gradient(100deg, var(--mint) 4%, #9df3e2 38%, var(--violet) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.86rem 1.45rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }

.btn-primary {
  background: linear-gradient(135deg, var(--mint), #63f0c9 55%, #a6ffe6);
  color: #04120f;
  box-shadow: 0 16px 34px -16px rgba(70, 229, 196, 0.75);
}
.btn-primary:hover { transform: translateY(-2px); color: #04120f; box-shadow: 0 22px 42px -16px rgba(70, 229, 196, 0.85); }

.btn-ghost {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--text);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: var(--surface-2); color: #fff; transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(5, 7, 13, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(5, 7, 13, 0.9);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: var(--text); }
.brand:hover { color: var(--text); }

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--mint);
  background: linear-gradient(150deg, rgba(70, 229, 196, 0.18), rgba(139, 124, 255, 0.16));
  border: 1px solid rgba(70, 229, 196, 0.32);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.brand-mark svg { width: 22px; height: 22px; }

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--font-display); font-size: 1.02rem; letter-spacing: -0.01em; }
.brand-text span { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); }

.site-nav { display: flex; align-items: center; gap: 0.35rem; }
.site-nav a {
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 9px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.site-nav a:hover { color: #fff; background: var(--surface); }

.site-nav .nav-cta {
  margin-left: 0.5rem;
  background: linear-gradient(135deg, rgba(70, 229, 196, 0.92), rgba(139, 124, 255, 0.9));
  color: #05100e;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
}
.site-nav .nav-cta:hover { color: #05100e; background: linear-gradient(135deg, var(--mint), #9d8fff); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  cursor: pointer;
  padding: 0;
  place-items: center;
  gap: 5px;
  flex-direction: column;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}
.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); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(3rem, 7vw, 5.5rem) 0 0; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 0 rgba(70, 229, 196, 0.65);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 12px rgba(70, 229, 196, 0); }
  100% { box-shadow: 0 0 0 0 rgba(70, 229, 196, 0); }
}

.hero h1 { margin-bottom: 1rem; }
.lede { font-size: clamp(1.02rem, 1.35vw, 1.14rem); max-width: 56ch; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 1.9rem 0 2.4rem; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  max-width: 520px;
}
.hero-stats dt {
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  font-family: var(--font-mono);
  margin-bottom: 0.3rem;
}
.hero-stats dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.42rem;
  font-weight: 600;
  color: var(--text);
}

/* ---------- App mock ---------- */
.hero-visual { position: relative; }

.app-card {
  position: relative;
  z-index: 2;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: linear-gradient(165deg, rgba(17, 26, 44, 0.96), rgba(8, 12, 21, 0.98));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.07);
  overflow: hidden;
  animation: float 9s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.visual-shadow {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: -34px;
  height: 70px;
  background: radial-gradient(ellipse at center, rgba(70, 229, 196, 0.3), transparent 70%);
  filter: blur(22px);
  z-index: 1;
}

.app-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}
.app-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); }
.app-bar .dot:first-child { background: rgba(255, 107, 107, 0.55); }
.app-bar .dot:nth-child(2) { background: rgba(255, 207, 107, 0.55); }
.app-bar .dot:nth-child(3) { background: rgba(70, 229, 196, 0.55); }
.app-title {
  margin-left: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.app-body { padding: 1.25rem; display: grid; gap: 1.05rem; }

.device-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 0.95rem;
  border-radius: 14px;
  border: 1px solid rgba(70, 229, 196, 0.24);
  background: linear-gradient(120deg, rgba(70, 229, 196, 0.1), rgba(70, 229, 196, 0.02));
}
.device-icon {
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--mint);
  background: rgba(70, 229, 196, 0.14);
  border: 1px solid rgba(70, 229, 196, 0.3);
}
.device-icon svg { width: 20px; height: 20px; }
.device-copy { display: flex; flex-direction: column; line-height: 1.35; }
.device-copy strong { font-size: 0.92rem; font-family: var(--font-display); }
.device-copy small { font-size: 0.75rem; color: var(--mint); display: inline-flex; align-items: center; gap: 0.35rem; }

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  animation: blink 2s infinite;
}
@keyframes blink { 50% { opacity: 0.25; } }

.chip {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text-soft);
  white-space: nowrap;
}
.chip-ok { margin-left: auto; color: var(--mint); border-color: rgba(70, 229, 196, 0.35); background: rgba(70, 229, 196, 0.1); }
.chip-muted { color: var(--muted); }

.balance-label { font-size: 0.68rem; letter-spacing: 0.13em; text-transform: uppercase; color: var(--muted); margin: 0; font-family: var(--font-mono); }
.balance-value { font-family: var(--font-display); font-size: clamp(1.7rem, 3vw, 2.15rem); color: var(--text); margin: 0.15rem 0 0; letter-spacing: -0.02em; }
.balance-delta { margin: 0; font-size: 0.85rem; color: var(--mint); font-weight: 500; }

.sparkline { width: 100%; height: 84px; }

.asset-list { display: grid; gap: 0.5rem; }
.asset-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 0.85rem;
  border-radius: 11px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 0.86rem;
}
.asset-name { color: var(--text); font-weight: 500; }
.asset-amt { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-soft); }

.app-foot { display: flex; flex-wrap: wrap; gap: 0.45rem; }

/* ---------- Ticker ---------- */
.ticker {
  margin-top: clamp(2.6rem, 5vw, 4rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.015);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.ticker-track {
  display: flex;
  gap: 2.6rem;
  padding: 0.95rem 0;
  width: max-content;
  animation: slide 38s linear infinite;
}
.ticker-track span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}
@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(276px, 1fr));
  gap: 1.15rem;
}

.card {
  position: relative;
  padding: 1.6rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), background 0.35s var(--ease);
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px 180px at 12% -10%, rgba(70, 229, 196, 0.14), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}
.card:hover { transform: translateY(-5px); border-color: rgba(70, 229, 196, 0.34); }
.card:hover::after { opacity: 1; }

.card-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  margin-bottom: 1.1rem;
  color: var(--mint);
  background: rgba(70, 229, 196, 0.1);
  border: 1px solid rgba(70, 229, 196, 0.26);
}
.card-icon svg { width: 23px; height: 23px; }

.card h3 { margin-bottom: 0.5rem; }
.card p { font-size: 0.93rem; margin: 0; }

/* ---------- Steps ---------- */
.steps { display: grid; gap: 1.15rem; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); counter-reset: step; }

.step {
  position: relative;
  padding: 1.7rem 1.5rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(8, 12, 21, 0.6);
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease);
}
.step:hover { border-color: rgba(139, 124, 255, 0.4); transform: translateY(-4px); }

.step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--violet);
  margin-bottom: 0.8rem;
  padding: 0.2rem 0.55rem;
  border-radius: 7px;
  background: rgba(139, 124, 255, 0.12);
  border: 1px solid rgba(139, 124, 255, 0.25);
}
.step h3 { margin-bottom: 0.55rem; }
.step p { font-size: 0.92rem; margin-bottom: 0.9rem; }
.step-note {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--amber);
  padding-left: 0.9rem;
  position: relative;
}
.step-note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

/* ---------- Guide / article ---------- */
.guide-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(1.8rem, 4vw, 3.5rem); align-items: start; }

.guide-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line-strong); box-shadow: var(--shadow); }
.guide-media img { width: 100%; height: 100%; min-height: 320px; object-fit: cover; filter: saturate(0.85) contrast(1.05); }
.guide-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 13, 0.05) 30%, rgba(5, 7, 13, 0.82));
  pointer-events: none;
}
.guide-media-badge {
  position: absolute;
  left: 1.1rem;
  bottom: 1.1rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  padding: 0.65rem 1rem;
  border-radius: 13px;
  background: rgba(5, 7, 13, 0.72);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
}
.guide-media-badge strong { font-family: var(--font-display); font-size: 0.95rem; color: var(--mint); }
.guide-media-badge span { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }

.guide-body h2 { margin-bottom: 0.7rem; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.guide-body p { font-size: 1.02rem; line-height: 1.78; }
.guide-cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.8rem; }

/* ---------- Habits ---------- */
.habits { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(1.8rem, 4vw, 3.5rem); align-items: center; }

.checklist { display: grid; gap: 0.7rem; }
.checklist li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.94rem;
  color: var(--text-soft);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.checklist li:hover { border-color: rgba(70, 229, 196, 0.32); background: var(--surface-2); }
.checklist svg { width: 20px; height: 20px; flex: none; margin-top: 0.15rem; color: var(--mint); }
.checklist strong { color: var(--text); font-weight: 600; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0.7rem; }

.faq details {
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.faq details[open] { border-color: rgba(70, 229, 196, 0.32); background: rgba(70, 229, 196, 0.045); }

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.1rem 3.2rem 1.1rem 1.3rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.03rem;
  color: var(--text);
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 1.3rem;
  top: 50%;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--mint);
  border-bottom: 2px solid var(--mint);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.3s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq summary:hover { color: #fff; }
.faq p { padding: 0 1.3rem 1.25rem; margin: 0; font-size: 0.96rem; max-width: 74ch; }

/* ---------- Notice ---------- */
.notice {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.5rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 207, 107, 0.28);
  background: linear-gradient(120deg, rgba(255, 207, 107, 0.09), rgba(255, 207, 107, 0.02));
}
.notice-icon { width: 26px; height: 26px; flex: none; color: var(--amber); }
.notice-icon svg { width: 100%; height: 100%; }
.notice h3 { font-size: 1.05rem; margin-bottom: 0.45rem; }
.notice p { font-size: 0.92rem; margin: 0; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: clamp(2.6rem, 5vw, 4rem) 0 1.5rem;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02));
}

.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 2rem; }

.footer-brand p { font-size: 0.9rem; margin-top: 1rem; max-width: 34ch; }
.footer-col { display: flex; flex-direction: column; gap: 0.55rem; }
.footer-col h4 { margin: 0 0 0.4rem; }
.footer-col a { color: var(--text-soft); font-size: 0.92rem; }
.footer-col a:hover { color: var(--mint); }
.footer-col .small { font-size: 0.86rem; color: var(--muted); margin: 0; }

.footer-bottom {
  margin-top: 2.6rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
}
.footer-bottom p { font-size: 0.8rem; color: var(--muted); margin: 0; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(12, 18, 32, 0.9);
  color: var(--text);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
  backdrop-filter: blur(10px);
  z-index: 70;
}
.to-top svg { width: 20px; height: 20px; }
.to-top.is-shown { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { border-color: rgba(70, 229, 196, 0.45); color: var(--mint); }

/* ---------- Scroll reveal ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 560px; margin: 0.5rem auto 0; }
  .guide-grid, .habits { grid-template-columns: 1fr; }
  .guide-media img { min-height: 240px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

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

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding: 0.9rem 1.35rem 1.3rem;
    background: #070b13;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 50px -24px rgba(0, 0, 0, 0.95);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  }
  .site-nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a { padding: 0.8rem 0.6rem; font-size: 1rem; border-radius: 10px; }
  .site-nav .nav-cta { margin: 0.4rem 0 0; text-align: center; padding: 0.75rem 1rem; }
}

@media (max-width: 620px) {
  body { font-size: 0.97rem; }
  .hero-stats { grid-template-columns: 1fr; gap: 0.9rem; }
  .hero-stats > div { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
  .hero-stats dt { margin: 0; }
  .hero-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.6rem; }
  .app-body { padding: 1rem; }
  .ticker-track { animation-duration: 26s; }
  .notice { flex-direction: column; }
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .app-card, .ticker-track, .pulse, .live-dot { animation: none !important; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.01ms !important; }
}