/* ==========================================================================
   InstaSaver — Optimized Premium Design
   ========================================================================== */

:root {
  --brand-1: #7b5bff;
  --brand-2: #e1306c;
  --brand-3: #f8a44c;
  --accent: #f8a44c;
  --brand-gradient: linear-gradient(135deg, #7b5bff 0%, #e1306c 55%, #f8a44c 100%);
  --brand-gradient-reverse: linear-gradient(135deg, #f8a44c 0%, #e1306c 55%, #7b5bff 100%);
  --brand-gradient-warm: linear-gradient(135deg, #e1306c 0%, #f8a44c 100%);

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-2xl: 36px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
  --shadow-xl: 0 24px 80px rgba(0,0,0,0.2);
  --shadow-glow: 0 0 40px rgba(123,91,255,0.2);

  --container: 1200px;
  --header-h: 64px;

  --font-heading: 'Space Grotesk', 'SF Pro Display', system-ui, sans-serif;
  --font-body: 'DM Sans', 'SF Pro Text', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 0.15s var(--ease);
  --t: 0.3s var(--ease);
  --t-slow: 0.5s var(--ease-out);
}

/* ---- Dark theme ---- */
html[data-theme='dark'] {
  --bg: #0b0c1a;
  --bg-2: #10122a;
  --bg-3: #171a35;
  --surface-0: rgba(255,255,255,0.02);
  --surface-1: rgba(255,255,255,0.04);
  --surface-2: rgba(255,255,255,0.06);
  --surface-3: rgba(255,255,255,0.1);
  --border-0: rgba(255,255,255,0.06);
  --border-1: rgba(255,255,255,0.1);
  --border-2: rgba(255,255,255,0.16);
  --text-0: #f2f3ff;
  --text-1: #e0e2f0;
  --text-2: #a3a8cd;
  --text-3: #6a6f96;
  --input-bg: rgba(255,255,255,0.03);
  --input-border: rgba(255,255,255,0.08);
  --mesh-1: rgba(123,91,255,0.12);
  --mesh-2: rgba(225,48,108,0.1);
  --mesh-3: rgba(248,164,76,0.06);
}

/* ---- Light theme (default) ---- */
html[data-theme='light'] {
  --bg: #fafafe;
  --bg-2: #f3f0ff;
  --bg-3: #ebe7ff;
  --surface-0: rgba(255,255,255,0.7);
  --surface-1: rgba(255,255,255,0.9);
  --surface-2: #ffffff;
  --surface-3: rgba(123,91,255,0.06);
  --border-0: rgba(123,91,255,0.08);
  --border-1: rgba(123,91,255,0.14);
  --border-2: rgba(123,91,255,0.2);
  --text-0: #14152b;
  --text-1: #2d2e48;
  --text-2: #5d6285;
  --text-3: #8888a4;
  --input-bg: #ffffff;
  --input-border: rgba(123,91,255,0.12);
  --mesh-1: rgba(123,91,255,0.06);
  --mesh-2: rgba(225,48,108,0.04);
  --mesh-3: rgba(248,164,76,0.03);
  --shadow-sm: 0 1px 3px rgba(20,21,43,0.04);
  --shadow: 0 4px 20px rgba(20,21,43,0.06);
  --shadow-lg: 0 12px 40px rgba(20,21,43,0.08);
}

/* ==========================================================================
   Reset
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ol, ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 700;
}

::selection {
  background: rgba(123,91,255,0.3);
  color: var(--text-0);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.container.narrow { max-width: 800px; }
.muted { color: var(--text-2); }
.hidden { display: none !important; }
.center { text-align: center; }
.pt-0 { padding-top: 0; }

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

:focus-visible {
  outline: 2px solid var(--brand-1);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* ==========================================================================
   Mesh Background Canvas
   ========================================================================== */

.mesh-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ==========================================================================
   Header — Slim floating bar
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 8px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--header-h);
  padding: 0 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: var(--shadow-sm);
}

.header-spacer { flex: 1; }

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.04em;
  padding-right: 10px;
  border-right: 1px solid var(--border-0);
  flex-shrink: 0;
  transition: opacity var(--t-fast);
}

.brand:hover { opacity: 0.8; }

.brand-logo {
  height: 50px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
  transition: opacity var(--t-fast);
}

.brand:hover .brand-logo { opacity: 0.8; }

.brand-logo-light { display: none; }

html[data-theme='dark'] .brand-logo-dark { display: none; }
html[data-theme='dark'] .brand-logo-light { display: block; }

@media (prefers-color-scheme: dark) {
  html:not([data-theme='light']) .brand-logo-dark { display: none; }
  html:not([data-theme='light']) .brand-logo-light { display: block; }
}

.footer-brand .brand-logo {
  height: 40px;
  max-width: 180px;
}

/* Nav */
.nav {
  display: flex;
  gap: 6px;
}

.nav-link {
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-0);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface-1);
  transition: all var(--t-fast);
}

.nav-link:hover { color: var(--text-0); border-color: var(--border-1); }

.nav-link.is-active {
  color: var(--brand-1);
  border-color: rgba(123,91,255,0.3);
  background: rgba(123,91,255,0.06);
}

.header-actions { display: flex; align-items: center; gap: 5px; }

/* Language Switcher */
.lang-wrap { position: relative; }

.lang-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
}

.lang-btn:hover { color: var(--text-0); border-color: var(--border-1); }
.lang-btn-flag { font-size: 0.85rem; line-height: 1; }

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 320px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  z-index: 200;
  padding: 4px;
  display: none;
}

.lang-dropdown.is-open { display: grid; grid-template-columns: 1fr 1fr; }

.lang-option {
  display: flex;
  align-items: center;
  padding: 9px 12px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-1);
  cursor: pointer;
  transition: all var(--t-fast);
  text-align: left;
  white-space: nowrap;
}

.lang-option:hover { background: var(--surface-2); }
.lang-option.is-active { background: rgba(123,91,255,0.08); color: var(--brand-1); font-weight: 600; }
.lang-opt-label { flex: 1; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  color: var(--text-2);
  transition: all var(--t-fast);
}

.icon-btn:hover {
  background: var(--surface-2);
  color: var(--text-0);
  border-color: var(--border-1);
}

.icon-btn:active { transform: scale(0.94); }

html[data-theme='dark'] .icon-sun { display: none; }
html[data-theme='light'] .icon-moon { display: none; }

.nav-toggle { display: none; }

/* ==========================================================================
   Hero — New Design with corner accents
   ========================================================================== */

.hero {
  position: relative;
  padding: 56px 0 48px;
  overflow: hidden;
  z-index: 1;
}

/* Corner gradient accents */
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123,91,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(225,48,108,0.06) 0%, transparent 70%);
  pointer-events: none;
}



.hero-inner {
  position: relative;
}

.hero-text {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(123,91,255,0.15);
  background: rgba(123,91,255,0.05);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-1);
  animation: fadeSlideUp 0.6s var(--ease-out) both;
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-1);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.045em;
  line-height: 1.08;
  animation: fadeSlideUp 0.6s var(--ease-out) 0.1s both;
}

.hero-sub {
  color: var(--text-2);
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto 32px;
  animation: fadeSlideUp 0.6s var(--ease-out) 0.2s both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Downloader — Compact glass card
   ========================================================================== */

.downloader {
  display: flex;
  gap: 10px;
  max-width: 760px;
  margin: 0 auto;
  padding: 6px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  animation: fadeSlideUp 0.6s var(--ease-out) 0.3s both;
  transition: box-shadow var(--t), border-color var(--t);
}

.downloader:focus-within {
  border-color: rgba(123,91,255,0.2);
  box-shadow: var(--shadow-xl), 0 0 50px rgba(123,91,255,0.1);
}

.field {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  gap: 8px;
  padding: 0 8px 0 42px;
  border-radius: var(--radius-lg);
  border: 1.5px solid transparent;
  background: var(--input-bg);
  transition: all var(--t);
}

.field:focus-within { border-color: var(--brand-1); }

.field-icon {
  position: absolute;
  left: 12px;
  color: var(--text-3);
  transition: color var(--t-fast);
}

.field:focus-within .field-icon { color: var(--brand-1); }

.field input {
  flex: 1;
  min-width: 0;
  height: 48px;
  border: 0;
  background: transparent;
  color: var(--text-0);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
}

.field input::placeholder { color: var(--text-3); }

.ghost-btn {
  flex-shrink: 0;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-1);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--t-fast);
}

.ghost-btn:hover { background: var(--surface-3); color: var(--text-0); }

.primary-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 150px;
  padding: 0 28px;
  height: 50px;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--brand-gradient);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(123,91,255,0.3);
  transition: all var(--t);
  overflow: hidden;
}

.primary-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--t-fast);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(123,91,255,0.4);
}

.primary-btn:hover::after { opacity: 1; }
.primary-btn:active { transform: translateY(0) scale(0.98); }
.primary-btn[disabled] { opacity: 0.55; cursor: progress; transform: none; }
.primary-btn.inline { height: 48px; }

.spinner {
  display: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}

.is-loading .spinner { display: block; }
.is-loading .btn-label { opacity: 0.6; }

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

.hero-note {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--text-3);
  text-align: center;
  text-underline-offset: 4px;
  animation: fadeSlideUp 0.6s var(--ease-out) 0.4s both;
}

.hero-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  border-radius: 2px;
  background: var(--brand-gradient);
  margin: 12px auto 0;
}

.alert {
  max-width: 760px;
  margin: 20px auto 0;
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(225,48,108,0.2);
  background: rgba(225,48,108,0.06);
  color: var(--text-1);
  font-size: 0.9rem;
  text-align: left;
  animation: fadeSlideUp 0.3s var(--ease-out) both;
}

/* ==========================================================================
   Result Card
   ========================================================================== */

.result { margin-top: 28px; }

.result-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-xl);
  text-align: left;
  animation: cardIn 0.5s var(--ease-out) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.result-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-0);
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface-2);
  border: 2px solid var(--border-1);
}

.result-user { font-family: var(--font-heading); font-weight: 700; font-size: 0.98rem; }
.result-meta { font-size: 0.8rem; color: var(--text-3); margin-top: 2px; }

.badge {
  margin-left: auto;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(123,91,255,0.08);
  border: 1px solid rgba(123,91,255,0.12);
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-1);
}

.notice {
  padding: 12px 16px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(248,164,76,0.2);
  background: rgba(248,164,76,0.05);
  font-size: 0.88rem;
  color: var(--text-1);
}

.caption {
  margin-bottom: 16px;
  font-size: 0.9rem;
  color: var(--text-2);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.7;
}

.caption.clamped {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.caption-toggle {
  border: 0;
  background: none;
  padding: 0;
  color: var(--brand-1);
  font-family: var(--font-heading);
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--t-fast);
}

.caption-toggle:hover { color: var(--brand-2); }

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.media-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-0);
  overflow: hidden;
  transition: all var(--t);
}

.media-item:hover {
  border-color: var(--border-1);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.media-preview {
  position: relative;
  aspect-ratio: 1 / 1;
  background: #000;
}

.media-preview img,
.media-preview video { width: 100%; height: 100%; object-fit: cover; }

.media-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(8px);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.media-actions {
  display: flex;
  gap: 8px;
  padding: 12px;
}

/* --- audio mode --- */
.audio-preview { aspect-ratio: 16/9; display: grid; place-items: center; }
.audio-preview img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: blur(3px) brightness(0.3); }

.audio-wave { position: relative; display: flex; align-items: center; gap: 5px; height: 44px; }

.audio-wave i {
  display: block;
  width: 4px;
  border-radius: 4px;
  background: var(--brand-gradient);
  animation: bounce 1.1s ease-in-out infinite;
}

.audio-wave i:nth-child(1) { height: 40%; animation-delay: 0s; }
.audio-wave i:nth-child(2) { height: 72%; animation-delay: 0.14s; }
.audio-wave i:nth-child(3) { height: 100%; animation-delay: 0.28s; }
.audio-wave i:nth-child(4) { height: 62%; animation-delay: 0.42s; }
.audio-wave i:nth-child(5) { height: 34%; animation-delay: 0.56s; }

@keyframes bounce { 0%, 100% { transform: scaleY(0.5); } 50% { transform: scaleY(1); } }

.audio-player { padding: 12px 12px 0; }
.audio-player audio { width: 100%; height: 36px; border-radius: var(--radius-xs); }

.download-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--brand-gradient);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.83rem;
  font-weight: 700;
  transition: all var(--t-fast);
  box-shadow: 0 2px 10px rgba(123,91,255,0.25);
}

.download-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(123,91,255,0.35); }

.copy-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-1);
  background: var(--surface-1);
  color: var(--text-3);
  transition: all var(--t-fast);
}

.copy-btn:hover { background: var(--surface-2); color: var(--text-0); }

/* ==========================================================================
   Sections — Compact with corner shadows
   ========================================================================== */

.section {
  padding: 64px 0;
  position: relative;
  z-index: 1;
}

/* Alternate section with corner gradient shadow */
.section-alt {
  background: var(--bg-2);
  position: relative;
}

.section-alt::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle at top left, rgba(123,91,255,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.section-alt::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle at bottom right, rgba(225,48,108,0.03) 0%, transparent 70%);
  pointer-events: none;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  text-align: center;
  font-weight: 800;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  border-radius: 2px;
  background: var(--brand-gradient);
  margin: 12px auto 0;
}

.section-sub {
  max-width: 480px;
  margin: 10px auto 40px;
  text-align: center;
  color: var(--text-2);
  font-size: 1rem;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.step-card {
  position: relative;
  padding: 28px 22px 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-gradient);
  opacity: 0;
  transition: opacity var(--t);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(123,91,255,0.12);
}

.step-card:hover::before { opacity: 1; }

.step-number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  background: var(--brand-gradient);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.05rem;
  box-shadow: 0 3px 12px rgba(123,91,255,0.3);
}

.step-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.step-card p { color: var(--text-2); font-size: 0.9rem; line-height: 1.65; }

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  padding: 26px 22px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--brand-gradient);
  opacity: 0;
  transition: opacity var(--t);
  filter: blur(40px);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(123,91,255,0.12);
}

.feature-card:hover::after { opacity: 0.12; }

.feature-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  border-radius: var(--radius);
  background: var(--brand-gradient);
  color: #fff;
  box-shadow: 0 3px 12px rgba(123,91,255,0.3);
  transition: transform 0.4s var(--ease-spring);
}

.feature-card:hover .feature-icon { transform: scale(1.08) rotate(-4deg); }

.feature-card h3 { font-size: 1.02rem; margin-bottom: 6px; }
.feature-card p { color: var(--text-2); font-size: 0.9rem; line-height: 1.65; }

/* Tool cards */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.tool-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  text-decoration: none;
  transition: all var(--t);
}

.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(123,91,255,0.2);
}

.tool-card-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--brand-gradient);
  color: #fff;
  flex-shrink: 0;
}

.tool-card-body { flex: 1; min-width: 0; }

.tool-card h3 {
  font-size: 1rem;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tool-card h3::after {
  content: '\2192';
  color: var(--brand-1);
  font-weight: 400;
  transition: transform var(--t-fast);
}

.tool-card:hover h3::after {
  transform: translateX(4px);
}

.tool-card p { color: var(--text-2); font-size: 0.88rem; line-height: 1.6; margin: 0; }

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq { display: flex; flex-direction: column; gap: 10px; }

.faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  overflow: hidden;
  transition: all var(--t);
}

.faq-item:hover { border-color: var(--border-1); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  transition: color var(--t-fast);
}

.faq-item summary::-webkit-details-marker { display: none }

.faq-q { flex: 1; }

.faq-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--text-3);
  flex-shrink: 0;
  transition: all var(--t);
}

.faq-item summary:hover .faq-icon { color: var(--brand-1); background: rgba(123,91,255,0.06); }

.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: var(--brand-gradient);
  color: #fff;
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.7;
  animation: accordionOpen 0.3s var(--ease-out) both;
}

@keyframes accordionOpen {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.faq-answer p { margin: 0; }

/* ==========================================================================
   Prose
   ========================================================================== */

.prose-header { text-align: center; margin-bottom: 32px; }
.prose-header h2 { font-size: 1.5rem; margin-bottom: 12px; }
.prose-header p { color: var(--text-2); line-height: 1.8; max-width: 640px; margin: 0 auto; }

.prose-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.prose-card {
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
}

.prose-card:hover { border-color: var(--border-1); box-shadow: var(--shadow-sm); }

.prose-card-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(123,91,255,0.08);
  color: var(--brand-1);
  margin-bottom: 12px;
}

.prose-card-icon--green { background: rgba(34,197,94,0.08); color: #22c55e; }
.prose-card-icon--warn { background: rgba(248,164,76,0.08); color: var(--brand-3); }

.prose-card h3 { font-size: 0.98rem; margin-bottom: 4px; }
.prose-card p { color: var(--text-2); font-size: 0.88rem; line-height: 1.65; margin: 0; }

.prose-card code {
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  border: 1px solid var(--border-0);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.prose-card a {
  color: var(--brand-1);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: rgba(123,91,255,0.3);
  text-underline-offset: 3px;
  transition: all var(--t-fast);
}

.prose-card a:hover { text-decoration-color: var(--brand-1); }

.prose-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.prose-info-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
}

.prose-info-card:hover { border-color: var(--border-1); }

.prose-info-card h3 { font-size: 0.98rem; margin-bottom: 6px; color: var(--text-0); }
.prose-info-card p { color: var(--text-2); font-size: 0.88rem; line-height: 1.7; margin: 0; }

.prose-info-card--warn {
  border-color: rgba(248,164,76,0.2);
  background: rgba(248,164,76,0.03);
}

.prose-info-card--warn h3 { color: var(--brand-3); }

/* Split section layout */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.split-left h2 { font-size: 1.5rem; margin-bottom: 16px; }
.split-left p { color: var(--text-2); line-height: 1.8; margin-bottom: 12px; font-size: 0.95rem; }
.split-left p:last-child { margin-bottom: 0; }

.split-right {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.split-feature {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
}

.split-feature:hover { border-color: var(--border-1); box-shadow: var(--shadow-sm); }

.split-feature-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(123,91,255,0.08);
  color: var(--brand-1);
  flex-shrink: 0;
}

.split-feature-icon--green { background: rgba(34,197,94,0.08); color: #22c55e; }
.split-feature-icon--warn { background: rgba(248,164,76,0.08); color: var(--brand-3); }

.split-feature div { flex: 1; }
.split-feature h3 { font-size: 0.95rem; margin-bottom: 4px; }
.split-feature p { color: var(--text-2); font-size: 0.88rem; line-height: 1.65; margin: 0; }
.split-feature em { font-style: italic; }

/* ==========================================================================
   Static Pages — About, Contact, Privacy, Terms
   ========================================================================== */

.static-hero {
  position: relative;
  padding: 72px 0 52px;
  overflow: hidden;
  text-align: center;
  background: var(--bg-2);
}

.static-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(50% 70% at 30% 50%, var(--mesh-1), transparent 70%),
    radial-gradient(45% 60% at 70% 40%, var(--mesh-2), transparent 70%);
  pointer-events: none;
}

.static-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 10px;
}

.static-hero-sub {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
}

.static-breadcrumb {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--text-2);
  margin: 0 0 14px;
}

.static-breadcrumb-link {
  color: var(--text-2);
  transition: color var(--t-fast);
}

.static-breadcrumb-link:hover { color: var(--brand-1); }

.static-breadcrumb-sep {
  color: var(--text-3);
  font-size: 0.9rem;
  user-select: none;
  opacity: 0.6;
}

.static-breadcrumb-current {
  color: var(--text-1);
  font-weight: 600;
}

.static-body { padding: 48px 0 64px; }

.static-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
}

.static-sidebar {
  position: sticky;
  top: 90px;
}

.static-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.static-sidebar-link {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all var(--t);
}

.static-sidebar-link:hover {
  color: var(--text-1);
  background: var(--surface-2);
}

.static-sidebar-link.is-active {
  color: var(--brand-1);
  background: rgba(123,91,255,0.06);
  border-left-color: var(--brand-1);
  font-weight: 600;
}

.static-content h2 { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 700; margin: 0 0 10px; }
.static-content p { color: var(--text-2); line-height: 1.8; margin: 0 0 0.8em; }
.static-content ul { padding-left: 0; margin: 0 0 0.8em; }

.static-content li {
  position: relative;
  padding: 10px 14px 10px 40px;
  margin-bottom: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.7;
  transition: all var(--t);
}

.static-content li::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 16px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-gradient);
}

.static-content li:hover { border-color: var(--border-1); background: var(--surface-2); }
.static-content li strong { color: var(--text-0); font-weight: 600; }

.static-intro-card {
  padding: 22px 26px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  margin-bottom: 24px;
}

.static-intro-card p { margin: 0; font-size: 1.02rem; line-height: 1.8; }

.static-intro-card--accent {
  border-color: rgba(123,91,255,0.15);
  background: rgba(123,91,255,0.03);
}

.static-intro-badge {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--brand-gradient);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.static-section {
  margin-bottom: 20px;
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
}

.static-section:hover { border-color: var(--border-1); box-shadow: var(--shadow-sm); }

.static-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.static-section-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: rgba(123,91,255,0.08);
  color: var(--brand-1);
  flex-shrink: 0;
}

.static-section-icon--warn { background: rgba(248,164,76,0.1); color: var(--brand-3); }
.static-section-icon--green { background: rgba(34,197,94,0.1); color: #22c55e; }

.static-section p { margin: 0; color: var(--text-2); line-height: 1.8; }

.static-cards-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }

.static-info-card {
  padding: 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  transition: all var(--t);
}

.static-info-card:hover { border-color: var(--border-1); transform: translateY(-2px); box-shadow: var(--shadow); }

.static-info-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  border-radius: var(--radius);
  background: rgba(123,91,255,0.08);
  color: var(--brand-1);
}

.static-info-icon--warn { background: rgba(248,164,76,0.1); color: var(--brand-3); }
.static-info-icon--green { background: rgba(34,197,94,0.1); color: #22c55e; }

.static-info-card h3 { font-family: var(--font-heading); font-size: 1.02rem; font-weight: 700; margin-bottom: 6px; }
.static-info-card p { margin: 0; color: var(--text-2); font-size: 0.92rem; line-height: 1.7; }

.static-date {
  display: inline-block;
  margin-bottom: 24px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  border: 1px solid var(--border-0);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-3);
}

.error-page { padding: 100px 0 120px; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border-0);
  background: var(--bg-2);
  padding-top: 52px;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, var(--border-0) 1px, transparent 0);
  background-size: 32px 32px;
  opacity: 0.5;
  pointer-events: none;
}

.site-footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(180deg, var(--bg-0) 0%, transparent 100%);
  pointer-events: none;
}

.footer-inner { position: relative; }

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .brand { margin-bottom: 14px; }
.footer-desc { max-width: 380px; font-size: 0.88rem; line-height: 1.7; color: var(--text-2); }

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.footer-col { display: flex; flex-direction: column; gap: 10px; }

.footer-col h3 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 2px;
}

.footer-col a { font-size: 0.88rem; color: var(--text-2); transition: all var(--t-fast); }
.footer-col a:hover { color: var(--brand-1); transform: translateX(3px); display: inline-block; }

.footer-bottom {
  padding: 18px 0 24px;
  border-top: 1px solid var(--border-0);
}

.footer-bottom p { margin: 0; font-size: 0.8rem; color: var(--text-3); }

/* ==========================================================================
   Toast
   ========================================================================== */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 200;
  transform: translate(-50%, 140%);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-0);
  background: var(--surface-1);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-0);
  transition: transform 0.45s var(--ease-spring);
}

.toast.is-visible { transform: translate(-50%, 0); }

/* ==========================================================================
   Scroll Reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.is-visible { opacity: 1; transform: translateY(0); }

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .prose-cards { grid-template-columns: repeat(2, 1fr); }
  .prose-bottom { grid-template-columns: 1fr; }
}

@media (max-width: 880px) {
  .header-inner { border-radius: var(--radius-lg); margin: 0 8px; }

  .nav {
    position: fixed;
    top: calc(var(--header-h) + 20px);
    left: 12px;
    right: 12px;
    flex-direction: column;
    gap: 2px;
    padding: 12px;
    background: var(--surface-1);
    backdrop-filter: blur(24px);
    border: 1px solid var(--border-0);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: none;
    z-index: 99;
  }

  .nav.is-open { display: flex; animation: mobileNavIn 0.3s var(--ease-out) both; }

  @keyframes mobileNavIn {
    from { opacity: 0; transform: translateY(-10px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }

  .nav-link { padding: 12px 16px; border-radius: var(--radius); font-size: 0.93rem; }
  .nav-toggle { display: grid; }
  .header-inner { position: relative; }
  .header-spacer { display: none; }
  .header-right { gap: 8px; }
  .header-actions { margin-left: auto; }

  .brand-logo { height: 42px; max-width: 190px; }
  .footer-brand .brand-logo { height: 36px; max-width: 160px; }

  .lang-dropdown { right: -8px; min-width: 200px; }

  .downloader { flex-direction: column; }
  .primary-btn { width: 100%; height: 50px; }

  .static-hero { padding: 56px 0 40px; }
  .static-body { padding: 36px 0 48px; }
  .static-intro-card { padding: 18px 20px; }
  .static-section { padding: 16px 18px; }
  .static-info-card { padding: 18px 20px; }

  .static-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .static-sidebar {
    position: static;
  }

  .static-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }

  .static-sidebar-link {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .static-sidebar-link.is-active {
    border-bottom-color: var(--brand-1);
    border-left: none;
  }

  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }

  .section { padding: 48px 0; }
  .hero { padding: 40px 0 36px; }

  .feature-grid { grid-template-columns: 1fr; }
  .prose-cards { grid-template-columns: 1fr; }
  .prose-bottom { grid-template-columns: 1fr; }
  .split-section { grid-template-columns: 1fr; gap: 28px; }
  .steps { grid-template-columns: 1fr; }
  .media-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding-inline: 16px; }
  .hero { padding: 32px 0 28px; }
  .section { padding: 40px 0; }
  .step-card, .feature-card, .tool-card { padding: 20px 18px; }
  .result-card { padding: 18px; }
  .brand { border-right: none; padding-right: 0; }
  .hero-title { font-size: clamp(1.8rem, 8vw, 2.6rem); }
  .section-title { font-size: clamp(1.4rem, 5vw, 2rem); }
  .footer-links { gap: 20px; }
  .footer-bottom { padding: 14px 0 20px; }
  .brand-logo { height: 34px; max-width: 150px; }
  .footer-brand .brand-logo { height: 32px; max-width: 140px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   Breadcrumbs Component
   ========================================================================== */
.breadcrumbs-nav {
  position: relative;
  z-index: 10;
  padding: 16px 0 0;
  margin-bottom: -8px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--text-2);
}

.breadcrumbs-link {
  color: var(--text-2);
  transition: color var(--t-fast);
}

.breadcrumbs-link:hover {
  color: var(--brand-1);
}

.breadcrumbs-separator {
  color: var(--text-3);
  font-size: 0.9rem;
  user-select: none;
  opacity: 0.6;
}

.breadcrumbs-current {
  color: var(--text-0);
  font-weight: 600;
}