/* ============================================================
   about.css  –  /about page styles
   Dark editorial / music tech aesthetic
   Vertax by Laiso Buck / 1994lab
   ============================================================ */

/* ── FONT FACE ──────────────────────────────────────────────────────────── */
@font-face {
  font-family: "Share Tech Mono";
  src: url("/fonts/ShareTechMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ── DESIGN TOKENS ──────────────────────────────────────────────────────── */
:root {
  color-scheme: dark;

  /* backgrounds */
  --bg: #090b0a;
  --panel: #101412;
  --panel-2: #141a16;
  --panel-hover: #181f1b;

  /* text */
  --text: #f0f5ef;
  --muted: #a8b2aa;
  --soft: #6f7a72;

  /* borders */
  --line: rgba(232, 242, 232, 0.09);
  --line-hover: rgba(200, 255, 77, 0.28);

  /* accents */
  --lime: #c8ff4d;
  --lime-dim: rgba(200, 255, 77, 0.12);
  --lime-glow: rgba(200, 255, 77, 0.55);
  --cyan: #54d8ff;
  --cyan-dim: rgba(84, 216, 255, 0.10);
  --amber: #ffbd4a;
  --rose: #ff6f91;

  /* shadows */
  --shadow-card: 0 2px 1px rgba(0, 0, 0, 0.18), 0 8px 32px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --shadow-hover: 0 4px 2px rgba(0, 0, 0, 0.22), 0 16px 48px rgba(0, 0, 0, 0.32);

  /* typography */
  --mono: "Share Tech Mono", "SFMono-Regular", Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;

  /* layout */
  --max-w: 1120px;
  --gap: 14px;
  --section-pad: 96px;
  --nav-h: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(200, 255, 77, 0.13) 0%, transparent 38rem),
    radial-gradient(circle at 88% 12%, rgba(84, 216, 255, 0.10) 0%, transparent 30rem),
    radial-gradient(circle at 50% 100%, rgba(200, 255, 77, 0.04) 0%, transparent 40rem),
    linear-gradient(180deg, #090b0a 0%, #0d100f 50%, #090b0a 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* noise overlay */
.noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.032;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='256' height='256'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='256' height='256' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

.site-shell {
  position: relative;
  z-index: 2;
  min-height: 100vh;
}

a {
  color: inherit;
}

h1, h2, h3, h4, p, ul {
  margin-top: 0;
}

/* ── TOPBAR / HEADER ─────────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 11, 10, 0.84);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav {
  width: min(var(--max-w), calc(100% - 32px));
  min-height: var(--nav-h);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-family: var(--mono);
  text-transform: uppercase;
  flex-shrink: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(200, 255, 77, 0.45);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(200, 255, 77, 0.04);
  flex-shrink: 0;
  box-shadow: 0 0 16px rgba(200, 255, 77, 0.12);
}

.brand-mark::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 10px var(--lime-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 13px;
  letter-spacing: 0.03em;
}

.brand-name {
  color: var(--text);
}

.brand-text small {
  color: var(--soft);
  font-size: 9px;
  letter-spacing: 0.08em;
}

/* Nav links list */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  display: block;
  padding: 6px 10px;
  border-radius: 5px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* Nav right: lang + CTA + hamburger */
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: rgba(16, 20, 18, 0.6);
}

.lang-btn {
  padding: 5px 9px;
  border: none;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--soft);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}

.lang-btn:last-child {
  border-right: none;
}

.lang-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.lang-btn.active {
  background: var(--lime);
  color: #0d1209;
  font-size: 11px;
}

.lang-btn:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

/* Nav CTA button */
.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  border: 1px solid rgba(200, 255, 77, 0.55);
  border-radius: 5px;
  background: var(--lime);
  color: #0d1209;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s, transform 0.15s;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.nav-cta:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* Hamburger */
.menu-toggle {
  display: none;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
  flex-shrink: 0;
}

.menu-icon {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--text);
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background: var(--text);
  transition: transform 0.2s;
}

.menu-icon::before { top: -5px; }
.menu-icon::after  { top: 5px; }

.menu-toggle[aria-expanded="true"] .menu-icon {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-icon::before {
  transform: rotate(45deg) translate(3.5px, 3.5px);
}

.menu-toggle[aria-expanded="true"] .menu-icon::after {
  transform: rotate(-45deg) translate(3.5px, -3.5px);
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ── LAYOUT HELPERS ──────────────────────────────────────────────────────── */
.section {
  padding: var(--section-pad) 0;
}

.section-inner {
  width: min(var(--max-w), calc(100% - 32px));
  margin: 0 auto;
}

.section-alt {
  background: rgba(16, 20, 18, 0.38);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 10px var(--lime-glow);
  flex-shrink: 0;
}

h2 {
  max-width: 800px;
  margin-bottom: 20px;
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 0.96;
  font-family: var(--mono);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

h3 {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
}

.section-copy {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.65;
}

/* card base */
.card-base {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(16, 20, 18, 0.72);
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

/* ── HERO ─────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  align-items: center;
  padding: 56px 0 72px;
  overflow: hidden;
}

.hero-inner {
  width: min(var(--max-w), calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  gap: 52px;
  align-items: center;
}

.hero-text {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 14px var(--lime-glow);
  flex-shrink: 0;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 14px var(--lime-glow); }
  50%       { opacity: 0.6; box-shadow: 0 0 6px var(--lime-glow); }
}

h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(44px, 7.5vw, 100px);
  line-height: 0.88;
  font-family: var(--mono);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.hero-sub {
  max-width: 660px;
  margin-bottom: 32px;
  color: #d5ddd6;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.5;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
}

.hero-note {
  margin-bottom: 0;
  color: var(--soft);
  font-size: 14px;
  font-style: italic;
  line-height: 1.5;
}

/* ── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 7px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: transform 0.15s, opacity 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.btn-primary {
  border: 1px solid rgba(200, 255, 77, 0.6);
  background: var(--lime);
  color: #0d1209;
  box-shadow: 0 0 24px rgba(200, 255, 77, 0.18);
}

.btn-primary:hover {
  box-shadow: 0 4px 28px rgba(200, 255, 77, 0.32);
}

.btn-secondary {
  border: 1px solid rgba(240, 245, 239, 0.18);
  background: rgba(240, 245, 239, 0.06);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: rgba(240, 245, 239, 0.3);
  background: rgba(240, 245, 239, 0.10);
}

.btn-ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
}

.btn-ghost:hover {
  border-color: rgba(240, 245, 239, 0.22);
  color: var(--text);
}

/* ── DIGITAL CRATE VISUAL ────────────────────────────────────────────────── */
.crate-visual {
  position: relative;
}

.crate-panel {
  position: relative;
  border: 1px solid rgba(240, 245, 239, 0.11);
  border-radius: 14px;
  background: linear-gradient(145deg, #141a16 0%, #0f1411 100%);
  box-shadow:
    0 2px 1px rgba(0, 0, 0, 0.2),
    0 24px 64px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  padding: 24px;
  overflow: hidden;
}

/* subtle glow corner */
.crate-panel::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 255, 77, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

/* abstract vinyl record */
.vinyl-record {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, #111 0 10%, var(--lime) 10.5% 14%, #070807 15% 26%, transparent 26.5%),
    repeating-radial-gradient(circle at center, #0c0e0c 0 2px, #060706 2.5px 5px);
  box-shadow:
    0 0 0 1px rgba(200, 255, 77, 0.22),
    0 24px 48px rgba(0, 0, 0, 0.5),
    inset 0 0 32px rgba(0, 0, 0, 0.4);
  animation: spin 18s linear infinite;
  flex-shrink: 0;
}

.vinyl-record::before {
  content: "";
  position: absolute;
  inset: 22%;
  border: 1px solid rgba(200, 255, 77, 0.18);
  border-radius: 50%;
}

.vinyl-label {
  position: absolute;
  inset: 36%;
  border-radius: 50%;
  background: rgba(200, 255, 77, 0.10);
  border: 1px solid rgba(200, 255, 77, 0.22);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--lime);
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* release metadata card */
.release-card {
  border: 1px solid rgba(240, 245, 239, 0.10);
  border-radius: 8px;
  background: rgba(9, 11, 10, 0.7);
  padding: 14px 16px;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 11px;
}

.release-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 3px 0;
}

.rc-label {
  color: var(--soft);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.rc-value {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.release-divider {
  height: 1px;
  background: var(--line);
  margin: 8px 0;
}

.release-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.stat-label {
  color: var(--soft);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-value {
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.stat-value.lime { color: var(--lime); }
.stat-value.cyan { color: var(--cyan); font-size: 10px; align-self: flex-end; margin-bottom: 1px; }

.release-status {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--lime);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 8px var(--lime-glow);
  flex-shrink: 0;
  animation: pulse 2.4s ease-in-out infinite;
}

/* tracklist */
.tracklist {
  border: 1px solid rgba(240, 245, 239, 0.08);
  border-radius: 7px;
  background: rgba(9, 11, 10, 0.5);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 10px;
}

.tl-header {
  color: var(--soft);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.tl-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  border-top: 1px solid rgba(240, 245, 239, 0.05);
}

.tl-num {
  color: var(--soft);
  font-size: 9px;
  width: 14px;
  flex-shrink: 0;
}

.tl-bar {
  flex: 1;
  height: 4px;
  background: rgba(240, 245, 239, 0.07);
  border-radius: 2px;
  overflow: hidden;
}

.tl-fill {
  height: 100%;
  background: linear-gradient(90deg, rgba(200, 255, 77, 0.5), rgba(200, 255, 77, 0.2));
  border-radius: 2px;
}

.tl-bpm {
  color: var(--muted);
  font-size: 10px;
  width: 24px;
  text-align: right;
  flex-shrink: 0;
}

.tl-key {
  color: var(--soft);
  font-size: 10px;
  width: 18px;
  text-align: right;
  flex-shrink: 0;
}

.tl-key.lime {
  color: var(--lime);
}

/* ── PROBLEM / PAIN SECTION ──────────────────────────────────────────────── */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  margin-top: 36px;
}

.pain-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(16, 20, 18, 0.65);
  box-shadow: var(--shadow-card);
  padding: 22px 20px;
  transition: border-color 0.2s;
}

.pain-card:hover {
  border-color: var(--line-hover);
}

.pain-num {
  display: block;
  margin-bottom: 14px;
  color: rgba(200, 255, 77, 0.35);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pain-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.pain-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

/* ── FEATURES GRID ───────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-top: 36px;
}

.feature-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(16, 20, 18, 0.65);
  box-shadow: var(--shadow-card);
  padding: 22px;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: var(--line-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(200, 255, 77, 0.04);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.feature-card:hover .feature-icon {
  color: var(--lime);
  border-color: rgba(200, 255, 77, 0.3);
  background: rgba(200, 255, 77, 0.07);
}

.feature-card h3 {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

/* ── HOW IT WORKS / STEPPER ──────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 40px;
  position: relative;
}

/* connecting line between steps */
.steps::before {
  content: "";
  position: absolute;
  top: 28px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 1px;
  background: linear-gradient(90deg, var(--lime) 0%, rgba(200, 255, 77, 0.15) 100%);
  z-index: 0;
}

.step {
  position: relative;
  z-index: 1;
  padding: 0 16px 32px;
  text-align: left;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(200, 255, 77, 0.3);
  border-radius: 50%;
  background: var(--bg);
  margin-bottom: 18px;
  box-shadow: 0 0 0 4px var(--bg);
}

.step-num span {
  color: var(--lime);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
}

.step-body h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.step-body p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

/* ── AUDIENCE ────────────────────────────────────────────────────────────── */
.audience-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 36px;
  padding: 0;
  list-style: none;
}

.audience-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(16, 20, 18, 0.55);
  font-size: 15px;
  color: var(--muted);
  transition: border-color 0.2s, color 0.2s;
}

.audience-item::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  flex-shrink: 0;
  margin-top: 6px;
}

.audience-item:hover {
  border-color: rgba(200, 255, 77, 0.18);
  color: var(--text);
}

/* ── ECOSYSTEM GRID ──────────────────────────────────────────────────────── */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  margin-top: 36px;
}

.eco-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(16, 20, 18, 0.65);
  box-shadow: var(--shadow-card);
  padding: 18px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  min-height: 160px;
}

.eco-card:hover {
  border-color: var(--line-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.eco-card:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.eco-card-top {
  margin-bottom: 12px;
}

.eco-tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(200, 255, 77, 0.05);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.eco-card h3 {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  color: var(--text);
}

.eco-card p {
  margin-bottom: 0;
  flex: 1;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.eco-link-hint {
  display: block;
  margin-top: 14px;
  color: var(--soft);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  transition: color 0.15s;
}

.eco-card:hover .eco-link-hint {
  color: var(--lime);
}

/* ── CONTACT SECTION ─────────────────────────────────────────────────────── */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 44px;
}

.contact-actions .btn {
  width: 100%;
  justify-content: center;
}

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  width: min(var(--max-w), calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--soft);
}

.footer-tagline {
  color: rgba(200, 255, 77, 0.5);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.footer-nav a {
  padding: 5px 10px;
  border-radius: 4px;
  color: var(--soft);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}

.footer-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.footer-nav a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ── RESPONSIVE: TABLET ──────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .eco-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  :root {
    --section-pad: 72px;
  }

  /* header */
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(9, 11, 10, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
    font-size: 14px;
    border-radius: 7px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  /* nav-cta visible on tablet, hidden on mobile inside hamburger */
  .nav-cta {
    display: none;
  }

  /* hero */
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .crate-visual {
    order: -1;
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
  }

  /* grids */
  .pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .steps::before {
    display: none;
  }

  .step {
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(16, 20, 18, 0.55);
  }

  .step-num {
    background: transparent;
    box-shadow: none;
  }

  .eco-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-actions {
    padding-top: 0;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .contact-actions .btn {
    width: auto;
    flex: 1 1 auto;
    min-width: 140px;
  }
}

/* ── RESPONSIVE: MOBILE ──────────────────────────────────────────────────── */
@media (max-width: 640px) {
  :root {
    --section-pad: 56px;
    --gap: 10px;
  }

  .nav {
    width: min(var(--max-w), calc(100% - 24px));
  }

  .brand-text small {
    display: none;
  }

  /* show only RU/EN on very narrow, keep 中文 but abbreviate */
  .lang-btn {
    padding: 5px 7px;
    font-size: 10px;
  }

  h1 {
    font-size: clamp(38px, 11vw, 72px);
  }

  h2 {
    font-size: clamp(26px, 7vw, 42px);
  }

  .hero {
    min-height: auto;
    padding: 40px 0 56px;
  }

  .hero-inner,
  .section-inner,
  .footer-inner {
    width: min(var(--max-w), calc(100% - 24px));
  }

  .crate-visual {
    max-width: 100%;
  }

  .vinyl-record {
    width: 100px;
    height: 100px;
  }

  .pain-grid,
  .features-grid,
  .steps,
  .eco-grid,
  .audience-list {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .contact-actions {
    flex-direction: column;
  }

  .contact-actions .btn {
    width: 100%;
  }
}

/* ── REDUCED MOTION ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .vinyl-record {
    animation: none;
  }

  .eyebrow::before,
  .status-dot {
    animation: none;
  }

  .btn:hover,
  .feature-card:hover,
  .eco-card:hover {
    transform: none;
  }
}