:root {
  --ink: #0b0f14;
  --ink-2: #12171f;
  --ink-3: #1a2029;
  --paper: #f2efe8;
  --muted: #8a96a8;
  --dim: #5c6778;
  --line: rgba(255, 255, 255, 0.07);
  --line-2: rgba(255, 255, 255, 0.12);
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.14);
  --accent-line: rgba(16, 185, 129, 0.35);
  --warn: #f59e0b;
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.14);
  --font: 'Inter Tight', 'Noto Sans KR', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--ink);
  color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.55;
}

a { color: inherit; }
::selection { background: var(--accent); color: #041a13; }

html { scroll-behavior: smooth; }

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--ink) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.015em;
  font-size: 18px;
}
.brand .mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  color: var(--accent);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  color: var(--muted);
}
.nav-links a { text-decoration: none; transition: color 0.15s ease; }
.nav-links a:hover { color: var(--paper); }
.lang {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  display: inline-flex;
  gap: 6px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 5px 10px;
  cursor: pointer;
  user-select: none;
  background: none;
  color: var(--muted);
}
.lang b { color: var(--paper); font-weight: 600; }
.lang span { color: var(--dim); }
.lang:hover { border-color: var(--accent-line); }
.btn-github {
  font-size: 13px;
  font-family: var(--mono);
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  text-decoration: none;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  transition: border-color 0.15s ease, color 0.15s ease;
  color: var(--paper);
}
.btn-github:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- HERO ---------- */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 28px 56px;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, var(--accent-soft), transparent 60%),
    radial-gradient(ellipse 40% 30% at 85% 20%, rgba(79, 70, 229, 0.08), transparent 60%);
  z-index: 0;
}
.hero > * { position: relative; z-index: 1; }
.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 13px 6px 8px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}
.hero-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.35; } }

h1.hero-title {
  margin: 22px 0 0;
  font-size: clamp(44px, 6.4vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 600;
  text-wrap: balance;
  max-width: 16ch;
}
h1.hero-title .hl { color: var(--accent); }
h1.hero-title .strike {
  position: relative;
  color: color-mix(in oklab, var(--paper) 45%, transparent);
}
h1.hero-title .strike::after {
  content: "";
  position: absolute;
  left: -3%;
  right: -3%;
  top: 52%;
  height: 4px;
  background: var(--accent);
  transform: rotate(-2.5deg);
  border-radius: 2px;
}
.hero-sub {
  margin: 28px 0 0;
  max-width: 580px;
  font-size: 18px;
  color: var(--muted);
}
.hero-sub b { color: var(--paper); font-weight: 500; }

.hero-ctas {
  display: flex;
  gap: 12px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  font-family: inherit;
  background: none;
  color: inherit;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
  background: var(--accent);
  color: #042116;
}
.btn-primary:hover:not(:disabled) { background: #0ea472; }
.btn-ghost {
  border-color: var(--line-2);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn .arrow {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #042116;
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 11px;
}

.hero-meta {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
}
.hero-meta span b { color: var(--accent); font-weight: 500; }

/* ---------- PRODUCT MOCK ---------- */
.product {
  max-width: 1200px;
  margin: 8px auto 0;
  padding: 0 28px;
  scroll-margin-top: 80px;
}
.mock {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 60px 140px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--line) inset;
  overflow: hidden;
}
.mock-chrome {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--ink-3);
}
.mock-dots { display: flex; gap: 6px; }
.mock-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}
.mock-url {
  flex: 1;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
  background: var(--ink);
  border: 1px solid var(--line);
  padding: 5px 12px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mock-url .lock-ico { color: var(--accent); }
.mock-net {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.mock-net b { color: var(--accent); font-weight: 500; }
.mock-body {
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
}

/* Drop zone (functional) */
.drop-zone {
  border: 1.5px dashed var(--line-2);
  border-radius: 14px;
  padding: 48px 28px;
  text-align: center;
  position: relative;
  background: linear-gradient(180deg, transparent, var(--accent-soft));
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.drop-zone:hover,
.drop-zone:focus-visible {
  border-color: var(--accent-line);
}
.drop-zone.drag-over {
  border-color: var(--accent);
  background: linear-gradient(180deg, transparent, color-mix(in oklab, var(--accent) 25%, transparent));
}
.drop-zone::before,
.drop-zone::after {
  content: "";
  position: absolute;
  inset: 20px;
  border: 1px dashed var(--accent-line);
  border-radius: 10px;
  opacity: 0.4;
  animation: pulse-ring 3.5s ease-in-out infinite;
  pointer-events: none;
}
.drop-zone::after { animation-delay: -1.75s; }
@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.02); opacity: 0.1; }
}
.drop-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  color: var(--accent);
  margin-bottom: 14px;
}
.drop-title {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}
.drop-sub {
  margin: 4px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.08em;
}

/* File list */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 280px;
}
.file-list-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0 4px 6px;
  gap: 12px;
  min-height: 24px;
}
.zip-btn {
  appearance: none;
  background: none;
  border: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--accent);
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
}
.zip-btn:hover:not(:disabled) { color: #0ea472; }
.zip-btn:disabled { color: var(--dim); cursor: default; opacity: 0.5; }
.zip-btn .arrow { font-size: 10px; transform: translateY(-1px); }

.file-rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 24px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  min-height: 80px;
  text-align: center;
}

.file-item {
  border-radius: 10px;
  background: var(--ink-3);
  border: 1px solid var(--line);
  transition: border-color 0.15s ease;
  overflow: hidden;
}
.file-item[open] { border-color: var(--accent-line); }
.file-item summary {
  list-style: none;
  cursor: pointer;
  outline: none;
}
.file-item summary::-webkit-details-marker { display: none; }

.file-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
}

.thumb {
  width: 44px;
  height: 44px;
  border-radius: 7px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #334155, #1e293b);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}
.thumb-a { background: linear-gradient(135deg, #fb923c, #ec4899 60%, #7c3aed); }
.thumb-b { background: linear-gradient(135deg, #10b981, #0ea5e9 70%); }
.thumb-c { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.thumb-d { background: linear-gradient(135deg, #8b5cf6, #3b82f6 70%); }
.thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.25), transparent 55%);
}
.thumb.processing::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 40%, rgba(255, 255, 255, 0.4) 50%, transparent 60%);
  animation: shine 1.4s linear infinite;
}
@keyframes shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.file-body { min-width: 0; }
.fn {
  font-size: 13.5px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.fm {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.fm .sep { opacity: 0.5; margin: 0 6px; }
.fm .removed { color: var(--accent); }
.fm .warn { color: var(--warn); }

.pill {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}
.pill::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
}
.pill.clean { color: var(--accent); background: var(--accent-soft); }
.pill.clean::before { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.pill.proc { color: var(--warn); background: rgba(245, 158, 11, 0.14); }
.pill.proc::before { background: var(--warn); animation: pulse 1s ease-in-out infinite; }
.pill.pend { color: var(--dim); background: rgba(255, 255, 255, 0.04); }
.pill.pend::before { background: var(--dim); }
.pill.err { color: var(--danger); background: var(--danger-soft); }
.pill.err::before { background: var(--danger); }

/* Expanded file details */
.file-expanded {
  padding: 0 14px 16px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding-top: 14px;
  animation: slideDown 0.2s ease;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.metadata-table {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 0 0 12px;
  font-size: 12px;
}
.metadata-table dt {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding-top: 2px;
  text-transform: uppercase;
}
.metadata-table dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  word-break: break-word;
}
.meta-before { color: var(--dim); text-decoration: line-through; text-decoration-color: var(--accent); text-decoration-thickness: 1px; }
.meta-arrow { color: var(--dim); }
.meta-after { color: var(--paper); }
.meta-after.removed {
  color: var(--accent);
  font-family: var(--font);
  font-style: italic;
  text-decoration: none;
  font-size: 11.5px;
}
.meta-empty {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 0;
}

.file-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.btn-download-single {
  appearance: none;
  background: none;
  border: 1px solid var(--line-2);
  color: var(--paper);
  padding: 6px 12px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.btn-download-single:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.file-notice,
.file-error {
  font-family: var(--mono);
  font-size: 11px;
  padding: 6px 10px;
  border-radius: 6px;
  letter-spacing: 0.02em;
  margin-top: 8px;
}
.file-notice { color: var(--warn); background: rgba(245, 158, 11, 0.1); border: 1px solid rgba(245, 158, 11, 0.25); }
.file-error { color: var(--danger); background: var(--danger-soft); border: 1px solid rgba(239, 68, 68, 0.3); }

/* ---------- STATS STRIP ---------- */
.stats {
  max-width: 1200px;
  margin: 80px auto 0;
  padding: 0 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat {
  padding: 28px 22px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }
.stat-num {
  font-size: 40px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.025em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.stat-num .u {
  font-size: 16px;
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0;
  font-family: var(--mono);
}
.stat-label {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---------- SECTION KICKER / TITLE ---------- */
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.kicker::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
}
.sec-title {
  font-size: clamp(36px, 4.4vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 16px 0 0;
  max-width: 22ch;
  text-wrap: balance;
}
.sec-title em { font-style: normal; color: var(--accent); }
.sec-lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: 17px;
  max-width: 540px;
}

/* ---------- FEATURES ---------- */
.features {
  max-width: 1200px;
  margin: 120px auto 0;
  padding: 0 28px;
  scroll-margin-top: 80px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 56px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
}
.feat {
  background: var(--ink-2);
  padding: 32px 28px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.feat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.feat-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.14em;
}
.feat-ico {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
}
.feat-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 42px 0 10px;
}
.feat-desc {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.55;
  margin: 0;
}

/* ---------- FORMATS ---------- */
.formats {
  max-width: 1200px;
  margin: 120px auto 0;
  padding: 0 28px;
  scroll-margin-top: 80px;
}
.formats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 56px;
}
.fmt {
  position: relative;
  padding: 26px 22px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.fmt:hover { border-color: var(--accent); transform: translateY(-3px); }
.fmt-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.fmt-name {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.fmt-badge {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.fmt-badge.warn { background: rgba(245, 158, 11, 0.14); color: var(--warn); }
.fmt-body {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}
.fmt-foot {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--dim);
  letter-spacing: 0.08em;
}

/* ---------- VERIFY ---------- */
.verify {
  max-width: 1200px;
  margin: 120px auto 0;
  padding: 0 28px;
  scroll-margin-top: 80px;
}
.verify-panel {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 56px 48px;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  position: relative;
  overflow: hidden;
}
.verify-panel::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -15%;
  width: 60%;
  height: 150%;
  background: radial-gradient(circle at center, var(--accent-soft), transparent 60%);
  pointer-events: none;
}
.verify-left { position: relative; }
.terminal {
  position: relative;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.75;
}
.terminal-head {
  padding: 10px 14px;
  background: var(--ink-3);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.06em;
}
.terminal-head span { flex: 1; }
.terminal-body { padding: 18px 20px; }
.t-prompt { color: var(--accent); }
.t-cmd { color: var(--paper); }
.t-out { color: var(--muted); }
.t-hl { color: var(--warn); }
.t-dim { color: var(--dim); }
.t-strike {
  color: var(--dim);
  text-decoration: line-through;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1.5px;
}
.t-caret {
  display: inline-block;
  animation: pulse 1s infinite;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 28px;
}
.step {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 4px;
  border-top: 1px solid var(--line);
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step-n {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
}
.step-t { font-weight: 500; font-size: 15.5px; }
.step-d { color: var(--muted); font-size: 13.5px; margin-top: 2px; }

/* ---------- FAQ ---------- */
.faq {
  max-width: 880px;
  margin: 120px auto 0;
  padding: 0 28px;
  scroll-margin-top: 80px;
}
.faq-list { margin-top: 48px; }
.faq-item {
  border-top: 1px solid var(--line);
  padding: 20px 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 17px;
  font-weight: 500;
  gap: 20px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--accent);
  font-family: var(--mono);
  font-size: 18px;
  transition: transform 0.2s ease;
  line-height: 1;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14.5px;
  max-width: 70ch;
}
.faq-item p code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--paper);
  background: var(--ink-3);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---------- CTA ---------- */
.cta {
  max-width: 1200px;
  margin: 140px auto 0;
  padding: 0 28px;
  text-align: center;
}
.cta h2 {
  font-size: clamp(52px, 7.5vw, 112px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 18px;
}
.cta h2 em { font-style: normal; color: var(--accent); }
.cta p {
  color: var(--muted);
  font-size: 17px;
  max-width: 480px;
  margin: 0 auto 32px;
}
.cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- FOOTER ---------- */
footer {
  margin-top: 120px;
  border-top: 1px solid var(--line);
  padding: 48px 28px 40px;
}
.foot {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 32px;
}
.foot h4 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 14px;
}
.foot a {
  display: block;
  text-decoration: none;
  font-size: 14px;
  color: var(--paper);
  padding: 4px 0;
  transition: color 0.15s ease;
}
.foot a:hover { color: var(--accent); }
.foot-brand p {
  color: var(--muted);
  font-size: 13px;
  margin: 10px 0 0;
  max-width: 24ch;
}
.foot-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--dim);
  letter-spacing: 0.04em;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .nav-links { gap: 18px; }
  .nav-links a:not(.btn-github):not(.lang) { display: none; }
  .mock-body { grid-template-columns: 1fr; padding: 20px; gap: 20px; }
  .mock-url { font-size: 11px; }
  .mock-net { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .features-grid { grid-template-columns: 1fr; }
  .formats-grid { grid-template-columns: repeat(2, 1fr); }
  .verify-panel { grid-template-columns: 1fr; padding: 32px 24px; gap: 32px; }
  .foot { grid-template-columns: 1fr 1fr; }
  .hero { padding: 56px 24px 40px; }
  .features, .formats, .verify, .faq { margin-top: 80px; }
  .cta { margin-top: 100px; }
}

@media (max-width: 560px) {
  .nav-inner { padding: 14px 20px; }
  .mock-body { padding: 16px; }
  .drop-zone { padding: 32px 20px; min-height: 220px; }
  .file-list { min-height: 180px; }
  .formats-grid { grid-template-columns: 1fr; }
  .foot { grid-template-columns: 1fr; }
  .foot-bottom { justify-content: center; text-align: center; }
  .hero-ctas, .cta-buttons { width: 100%; }
  .btn { flex: 1; justify-content: center; }
}