:root {
  --fb-blue: #1877f2;
  --fb-blue-dark: #0b5fd9;
  --fb-blue-deep: #0a2e6e;
  --ink: #0f172a;
  --ink-soft: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f6f8fb;
  --card: #ffffff;
  --green: #10b981;
  --green-dark: #059669;
  --amber: #f59e0b;
  --red: #ef4444;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.14);
  --grad: linear-gradient(135deg, #1877f2 0%, #0b5fd9 55%, #0845b3 100%);
  --grad-hero: linear-gradient(160deg, #071b3d 0%, #0b2e63 45%, #1150c0 100%);
}

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

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

svg { vertical-align: middle; }

/* ---------------- Navbar ---------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}

.brand-logo {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--grad);
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(24, 119, 242, 0.35);
}

.brand-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-text span { color: var(--fb-blue); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.25s;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  gap: 16px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
}

.nav-links.nav-right { gap: 2px; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 13px;
  border: none;
  background: none;
  color: var(--ink-soft);
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 9px;
  text-decoration: none;
  transition: background 0.18s, color 0.18s;
  white-space: nowrap;
}

.nav-link:hover { background: #eef4ff; color: var(--fb-blue); }

.nav-link .caret { transition: transform 0.2s; opacity: 0.7; }

.dropdown.open .nav-link .caret { transform: rotate(180deg); }

.dropdown { position: relative; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 260px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 6px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s, transform 0.18s, visibility 0.18s;
  z-index: 120;
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li a,
.dropdown-menu li button.lang-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 11px;
  border: none;
  background: none;
  color: var(--ink-soft);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}

.dropdown-menu li a:hover,
.dropdown-menu li button.lang-opt:hover { background: #eef4ff; color: var(--fb-blue); }

.dropdown-menu .divider { height: 1px; background: var(--line); margin: 5px 8px; }

.flag {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 800;
  color: #fff;
  background: var(--grad);
}

.nav-badge {
  background: #f0f4ff;
  color: var(--fb-blue);
  border-radius: 999px;
  font-weight: 700;
}

.nav-badge:hover { background: #e3edff; color: var(--fb-blue-dark); }

.badge-icon {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--fb-blue);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
}

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  background: var(--grad-hero);
  color: #fff;
  padding: 64px 0 84px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(700px 340px at 12% -10%, rgba(255, 255, 255, 0.14), transparent 60%),
    radial-gradient(760px 380px at 92% 8%, rgba(56, 189, 248, 0.28), transparent 60%),
    radial-gradient(600px 320px at 60% 120%, rgba(129, 140, 248, 0.22), transparent 60%);
}

.hero-inner { position: relative; text-align: center; }

.hero-logo {
  width: 84px;
  height: 84px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
  color: #fff;
}

.hero-title {
  font-size: clamp(28px, 4.5vw, 46px);
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(18px, 3vw, 28px);
  font-weight: 600;
  color: #cfe0ff;
  margin-top: 6px;
  letter-spacing: -0.3px;
}

.hero-tagline {
  max-width: 640px;
  margin: 16px auto 30px;
  color: #a9c4f5;
  font-size: 15.5px;
}

/* Download box */
.download-box {
  max-width: 720px;
  margin: 0 auto;
  text-align: left;
}

.input-group {
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 14px;
  padding: 8px;
  box-shadow: 0 18px 44px rgba(2, 8, 26, 0.4);
  gap: 6px;
}

.icon-btn {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border: none;
  background: #f1f5f9;
  color: var(--ink-soft);
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}

.icon-btn:hover { background: #e2e8f0; color: var(--fb-blue); }

.clear-btn { background: none; color: #94a3b8; }
.clear-btn:hover { background: #f1f5f9; color: var(--red); }

.download-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  padding: 10px 8px;
  background: transparent;
}

.download-input::placeholder { color: #94a3b8; font-weight: 400; }

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  padding: 13px 26px;
  border-radius: 11px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #16a34a, #059669);
  box-shadow: 0 6px 16px rgba(5, 150, 105, 0.4);
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
  white-space: nowrap;
}

.btn-download:hover { filter: brightness(1.07); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(5, 150, 105, 0.45); }
.btn-download:active { transform: translateY(0); }
.btn-download:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }

.btn-download .dl-icon { animation: none; }

@keyframes bounceArrow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(3px); }
}

.loading .btn-download .dl-icon { animation: bounceArrow 1s infinite; }

.progress-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  margin-top: 14px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, #34d399, #38bdf8);
  transition: width 0.4s ease;
}

.form-hint {
  margin-top: 12px;
  text-align: center;
  color: #8faee0;
  font-size: 13px;
  font-weight: 500;
}

.error-box {
  max-width: 720px;
  margin: 18px auto 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.35);
  color: #fecaca;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  text-align: left;
}

.error-box svg { flex-shrink: 0; margin-top: 2px; }

/* Result card */
.result-card {
  max-width: 720px;
  margin: 22px auto 0;
  display: flex;
  gap: 18px;
  background: #fff;
  color: var(--ink);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-lg);
  text-align: left;
  animation: fadeUp 0.35s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-thumb {
  position: relative;
  flex-shrink: 0;
  width: 168px;
  height: 110px;
  border-radius: 12px;
  overflow: hidden;
  background: #0f172a;
}

.result-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.duration-badge {
  position: absolute;
  right: 8px;
  bottom: 8px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  letter-spacing: 0.4px;
}

.result-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.result-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

.result-meta { color: var(--muted); font-size: 13px; margin-top: 4px; font-weight: 500; }

.result-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  padding: 11px 20px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 700;
  transition: transform 0.14s, box-shadow 0.14s, filter 0.14s;
  text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }

.btn-hd {
  background: linear-gradient(135deg, var(--fb-blue), var(--fb-blue-dark));
  color: #fff;
  box-shadow: 0 6px 14px rgba(24, 119, 242, 0.35);
}

.btn-hd:hover { box-shadow: 0 8px 18px rgba(24, 119, 242, 0.45); filter: brightness(1.05); }

.btn-sd {
  background: linear-gradient(135deg, #0ea5e9, #0284c7);
  color: #fff;
  box-shadow: 0 6px 14px rgba(14, 165, 233, 0.3);
}

.btn-sd:hover { box-shadow: 0 8px 18px rgba(14, 165, 233, 0.4); filter: brightness(1.05); }

.btn-secondary {
  background: #f1f5f9;
  color: var(--ink-soft);
}

.btn-secondary:hover { background: #e2e8f0; }

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 6px 14px rgba(24, 119, 242, 0.35);
}

.result-note { color: var(--muted); font-size: 12.5px; margin-top: 10px; }

/* ---------------- Steps ---------------- */
.steps-section { padding: 72px 0; background: var(--card); }

.section-title {
  text-align: center;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 900;
  letter-spacing: -0.6px;
}

.section-subtitle {
  text-align: center;
  color: var(--muted);
  margin-top: 8px;
  font-size: 16px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.step-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 26px 28px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: #fff;
}

.step-num {
  position: absolute;
  top: 16px;
  left: 18px;
  font-size: 44px;
  font-weight: 900;
  color: rgba(24, 119, 242, 0.1);
  line-height: 1;
}

.step-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  color: var(--fb-blue);
  background: #eaf2ff;
  border-radius: 18px;
}

.step-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.step-card p { color: var(--muted); font-size: 14.5px; }

/* ---------------- Features ---------------- */
.features-section {
  background: linear-gradient(135deg, #f0f6ff, #eaf1fd);
  padding: 64px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-icon {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: var(--fb-blue);
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.feature-item h4 { font-size: 16.5px; font-weight: 800; }
.feature-item p { color: var(--muted); font-size: 14px; margin-top: 3px; }

/* ---------------- Info section (updates + FAQ) ---------------- */
.info-section { padding: 64px 0; }

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  color: #fff;
  background: var(--grad);
  font-weight: 800;
  font-size: 16px;
}

.panel-head svg { color: #dbeafe; }

.scrollstyle {
  max-height: 480px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.update-item {
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-soft);
}

.update-item strong { display: block; margin-bottom: 3px; }

.update-item.success strong { color: #0369a1; }
.update-item.info strong { color: #7c3aed; }

.update-item.success { background: #f0f9ff; border-left: 3px solid #38bdf8; }
.update-item.info { background: #faf5ff; border-left: 3px solid #a78bfa; }

/* Accordion */
.acc-item { border-bottom: 1px solid var(--line); }

.acc-item:last-child { border-bottom: none; }

.acc-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: none;
  border: none;
  padding: 15px 20px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition: color 0.15s;
}

.acc-head:hover { color: var(--fb-blue); }

.acc-chev { flex-shrink: 0; color: var(--muted); transition: transform 0.25s; }

.acc-item.open .acc-chev { transform: rotate(180deg); color: var(--fb-blue); }

.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.acc-item.open .acc-body { max-height: 300px; }

.acc-body p { padding: 0 20px 16px; color: var(--muted); font-size: 13.5px; }

/* ---------------- Footer ---------------- */
.footer {
  background: #0a1730;
  color: #9fb0d0;
  padding: 40px 0 28px;
  text-align: center;
  font-size: 13.5px;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}

.footer-links a { color: #c6d4f0; text-decoration: none; font-weight: 600; transition: color 0.15s; }
.footer-links a:hover { color: #fff; }

.footer-links .sep { color: #3d5279; }

.footer-note { margin-bottom: 10px; }
.footer-disclaimer { color: #7d8fb5; max-width: 760px; margin: 0 auto 14px; }
.footer-disclaimer strong { color: #c6d4f0; }
.footer-copy { color: #5c6f99; }

/* ---------------- Modals ---------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(6, 15, 34, 0.6);
  backdrop-filter: blur(3px);
  z-index: 200;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(600px, calc(100vw - 32px));
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 30px 70px rgba(2, 8, 26, 0.5);
  z-index: 210;
  animation: modalIn 0.25s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translate(-50%, -46%); }
  to { opacity: 1; transform: translate(-50%, -50%); }
}

.modal[hidden] { display: none; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}

.modal-header h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--fb-blue);
}

.modal-close {
  width: 34px;
  height: 34px;
  border: none;
  background: #f1f5f9;
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1;
  border-radius: 9px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.modal-close:hover { background: #fee2e2; color: var(--red); }

.modal-body { padding: 20px 22px; overflow-y: auto; }

.modal-body p { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 12px; }
.modal-body p:last-child { margin-bottom: 0; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  padding: 14px 22px;
  border-top: 1px solid var(--line);
  gap: 10px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  background: #f1f5f9;
  padding: 5px;
  border-radius: 11px;
  margin-bottom: 18px;
}

.tab-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 12px;
  border: none;
  background: none;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-soft);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.tab-btn.active { background: #fff; color: var(--fb-blue); box-shadow: var(--shadow-sm); }

.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeUp 0.25s ease; }

.howto-list {
  list-style: none;
  counter-reset: howto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.howto-list li {
  counter-increment: howto;
  position: relative;
  padding-left: 44px;
  color: var(--ink-soft);
  font-size: 14.5px;
}

.howto-list li::before {
  content: counter(howto);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: #eaf2ff;
  color: var(--fb-blue);
  font-weight: 800;
  border-radius: 9px;
}

.howto-list strong { color: var(--ink); }

.about-body { padding-bottom: 24px; }

/* Forms */
.form-group { margin-bottom: 14px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink);
  outline: none;
  background: #fbfcfe;
  transition: border 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--fb-blue);
  box-shadow: 0 0 0 3px rgba(24, 119, 242, 0.15);
  background: #fff;
}

.form-group input.invalid,
.form-group textarea.invalid { border-color: var(--red); }

.contact-success { color: var(--green-dark); font-weight: 700; margin-top: 12px; }

/* ---------------- Toast ---------------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #0f172a;
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 300;
  animation: fadeUp 0.25s ease;
}

.toast.error { background: var(--red); }
.toast.success { background: var(--green-dark); }

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .info-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; gap: 22px; }
  .result-card { flex-direction: column; }
  .result-thumb { width: 100%; height: 190px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    padding: 12px 16px 18px;
    gap: 8px;
    display: none;
  }

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

  .nav-links { flex-direction: column; align-items: stretch; gap: 2px; width: 100%; }
  .nav-links.nav-right { flex-direction: column; }

  .nav-link { width: 100%; justify-content: space-between; padding: 10px 12px; }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid #e0ecff;
    border-radius: 0;
    margin-left: 12px;
    padding: 0;
    display: none;
    min-width: 0;
  }

  .dropdown.open .dropdown-menu { display: block; }

  .input-group { flex-wrap: wrap; }
  .download-input { order: 2; width: calc(100% - 104px); flex: none; }
  .icon-btn { order: 1; }
  .clear-btn { order: 3; }
  .btn-download { order: 4; width: 100%; justify-content: center; margin-top: 4px; }

  .hero { padding: 44px 0 64px; }
  .hero-logo { width: 68px; height: 68px; border-radius: 20px; }
  .hero-logo svg { width: 56px; height: 56px; }
}