/* =========================================================================
   Shanghai Seii.top Technology — Marketing Site
   Design system: glass + gradient mesh, dark-first with light toggle
   ========================================================================= */

:root {
  /* Brand */
  --brand-primary: #4F46E5;
  --brand-primary-strong: #6366F1;
  --brand-accent: #14B8A6;
  --brand-pink: #EC4899;
  --brand-amber: #F59E0B;

  /* Dark palette (default) */
  --bg-0: #07090F;
  --bg-1: #0B0F19;
  --bg-2: #11162A;
  --bg-3: #1A2138;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text-1: #F5F7FB;
  --text-2: #C8CEDD;
  --text-3: #8B93A7;
  --text-dim: #5C6379;

  /* Effects */
  --shadow-1: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-2: 0 10px 40px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 60px rgba(79, 70, 229, 0.35);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  --container: 1180px;

  --easing: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 220ms var(--easing);

  /* Type scale */
  --font-display: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
}

:root[data-theme='light'] {
  --bg-0: #FFFFFF;
  --bg-1: #F7F8FB;
  --bg-2: #EEF1F7;
  --bg-3: #E2E7F0;
  --surface: rgba(15, 23, 42, 0.04);
  --surface-strong: rgba(15, 23, 42, 0.07);
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.16);
  --text-1: #0B0F19;
  --text-2: #2C3245;
  --text-3: #555A6C;
  --text-dim: #7E8398;
  --shadow-2: 0 10px 40px rgba(15, 23, 42, 0.08);
  --shadow-glow: 0 0 60px rgba(79, 70, 229, 0.18);
}

/* ---------- Reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-2);
  background: var(--bg-1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.5rem); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); }
h4 { font-size: 1.075rem; }

p {
  margin: 0 0 1em;
  color: var(--text-2);
}

a {
  color: var(--text-1);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--brand-primary-strong); }

ul { padding-left: 1.2em; }
li { margin-bottom: 0.4em; }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-strong);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }

::selection {
  background: var(--brand-primary);
  color: #fff;
}

/* ---------- Background mesh ---------- */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 700px at 12% -10%, rgba(79, 70, 229, 0.35), transparent 60%),
    radial-gradient(800px 600px at 92% 6%, rgba(20, 184, 166, 0.22), transparent 60%),
    radial-gradient(700px 500px at 50% 110%, rgba(236, 72, 153, 0.18), transparent 60%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 40%, var(--bg-1));
}
:root[data-theme='light'] .bg-mesh {
  background:
    radial-gradient(900px 700px at 12% -10%, rgba(79, 70, 229, 0.16), transparent 60%),
    radial-gradient(800px 600px at 92% 6%, rgba(20, 184, 166, 0.12), transparent 60%),
    radial-gradient(700px 500px at 50% 110%, rgba(236, 72, 153, 0.10), transparent 60%),
    linear-gradient(180deg, #F7F8FB, #FFFFFF);
}

/* ---------- Containers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 110px 0;
  position: relative;
}
.section--tight { padding: 70px 0; }

.section__head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.section__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--brand-accent);
  margin-bottom: 16px;
}
.section__lead {
  font-size: 1.125rem;
  color: var(--text-3);
  max-width: 620px;
  margin: 0 auto;
}

/* ---------- Navigation ---------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 16px 0;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled {
  background: rgba(11, 15, 25, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--border);
}
:root[data-theme='light'] .site-nav.is-scrolled {
  background: rgba(255, 255, 255, 0.82);
}
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-1);
  letter-spacing: -0.01em;
}
.brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  box-shadow: 0 6px 24px rgba(79,70,229,0.45);
  color: #fff;
  font-weight: 800;
}
.brand__name { display: inline-flex; flex-direction: column; line-height: 1.1; }
.brand__name span:last-child {
  font-size: 0.72rem;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  color: var(--text-2);
  transition: background var(--transition), color var(--transition);
}
.nav-links a:hover,
.nav-links a.is-active {
  color: var(--text-1);
  background: var(--surface-strong);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.theme-toggle:hover {
  color: var(--text-1);
  background: var(--surface-strong);
  border-color: var(--border-strong);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme='light'] .theme-toggle .icon-moon { display: none; }
:root[data-theme='light'] .theme-toggle .icon-sun { display: inline-block; }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--surface);
}
.lang-toggle__btn {
  min-width: 34px;
  height: 30px;
  padding: 0 8px;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: background var(--transition), color var(--transition);
}
.lang-toggle__btn:hover {
  color: var(--text-1);
  background: var(--surface-strong);
}
.lang-toggle__btn.is-active {
  color: var(--text-1);
  background: var(--surface-strong);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

.nav-burger {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-1);
  align-items: center;
  justify-content: center;
}
.nav-burger svg { width: 18px; height: 18px; }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-links.is-open {
    display: flex;
    position: absolute;
    top: 64px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    background: rgba(11,15,25,0.94);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
  }
  :root[data-theme='light'] .nav-links.is-open {
    background: rgba(255,255,255,0.94);
  }
  .nav-links.is-open a { padding: 12px 14px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}
.btn--primary {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-strong));
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(79,70,229,0.7);
}
.btn--primary:hover {
  transform: translateY(-1px);
  color: #fff;
  box-shadow: 0 18px 40px -10px rgba(79,70,229,0.7);
}
.btn--ghost {
  background: var(--surface);
  color: var(--text-1);
  border-color: var(--border-strong);
}
.btn--ghost:hover {
  background: var(--surface-strong);
  border-color: var(--brand-primary);
}
.btn--link {
  padding: 0;
  background: transparent;
  color: var(--brand-primary-strong);
  font-weight: 600;
}
.btn--link::after {
  content: '\2192';
  margin-left: 4px;
  transition: transform var(--transition);
  display: inline-block;
}
.btn--link:hover::after { transform: translateX(4px); }
.btn--lg { padding: 14px 28px; font-size: 1rem; }
.btn--sm { padding: 8px 14px; font-size: 0.85rem; }

/* ---------- Pills / badges ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.82rem;
  font-weight: 500;
}
.pill__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-accent);
  box-shadow: 0 0 12px var(--brand-accent);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(20,184,166,0.12);
  color: var(--brand-accent);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid rgba(20,184,166,0.28);
}
.badge--violet {
  background: rgba(99,102,241,0.16);
  color: var(--brand-primary-strong);
  border-color: rgba(99,102,241,0.32);
}
.badge--amber {
  background: rgba(245,158,11,0.14);
  color: #FBBF24;
  border-color: rgba(245,158,11,0.32);
}

/* ---------- Hero ---------- */
.hero {
  padding: 160px 0 100px;
  position: relative;
}
.hero__inner {
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}
.hero__title {
  background: linear-gradient(180deg, var(--text-1) 0%, #B7BFD6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
:root[data-theme='light'] .hero__title {
  background: linear-gradient(180deg, #0B0F19 0%, #2C3245 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--brand-primary-strong), var(--brand-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  color: var(--text-3);
  margin: 24px auto 36px;
  max-width: 680px;
}
.hero__actions {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.hero__meta {
  margin-top: 36px;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 18px 30px;
  justify-content: center;
  font-size: 0.86rem;
  color: var(--text-3);
}
.hero__meta strong {
  color: var(--text-1);
  font-weight: 600;
}

.hero__preview {
  margin-top: 80px;
  position: relative;
}
.product-card {
  margin: 0 auto;
  max-width: 1020px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01)),
    var(--bg-2);
  border: 1px solid var(--border-strong);
  padding: 22px;
  box-shadow: var(--shadow-2), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
:root[data-theme='light'] .product-card {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.02), rgba(15,23,42,0.005)),
    #FFFFFF;
}
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(79,70,229,0.18), transparent 50%);
  pointer-events: none;
}
.product-card__topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.window-dots { display: inline-flex; gap: 6px; }
.window-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg-3);
}
.window-dots span:nth-child(1) { background: #FF5F57; }
.window-dots span:nth-child(2) { background: #FEBC2E; }
.window-dots span:nth-child(3) { background: #28C841; }

.window-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-3);
}

.product-card__body {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 18px;
  position: relative;
}
.capture-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.capture-row {
  border-radius: var(--radius-md);
  background: var(--bg-3);
  padding: 14px;
  display: grid;
  gap: 4px;
  cursor: default;
  transition: transform var(--transition), background var(--transition);
}
.capture-row:hover { background: var(--bg-2); transform: translateY(-2px); }
.capture-row__title {
  font-size: 0.9rem;
  color: var(--text-1);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.capture-row__title small {
  font-weight: 400;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}
.capture-row__meta {
  font-size: 0.78rem;
  color: var(--text-3);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(79,70,229,0.18);
  color: #C7D2FE;
}
.tag--teal { background: rgba(20,184,166,0.18); color: #99F6E4; }
.tag--pink { background: rgba(236,72,153,0.18); color: #FBCFE8; }

.detail-pane {
  border-radius: var(--radius-md);
  background: var(--bg-3);
  padding: 18px;
  min-height: 280px;
  display: grid;
  gap: 14px;
}
.detail-pane h4 {
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  text-transform: uppercase;
  margin: 0;
  font-weight: 600;
}
.detail-pane .section-h2 {
  font-size: 1rem;
  color: var(--text-1);
  margin: 0;
}
.detail-pane p {
  font-size: 0.88rem;
  color: var(--text-2);
  margin: 0;
}
.detail-pane .audit-line {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-3);
  padding: 8px 10px;
  background: rgba(0,0,0,0.22);
  border-radius: 8px;
}
:root[data-theme='light'] .detail-pane .audit-line {
  background: rgba(15,23,42,0.05);
}

@media (max-width: 720px) {
  .product-card__body { grid-template-columns: 1fr; }
  .hero { padding: 130px 0 60px; }
}

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  pointer-events: none;
  background: linear-gradient(135deg, rgba(99,102,241,0.35), rgba(20,184,166,0.25) 50%, transparent 75%);
  opacity: 0;
  transition: opacity var(--transition);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
}
.feature-card:hover {
  transform: translateY(-4px);
  background: var(--surface-strong);
}
.feature-card:hover::before { opacity: 1; }
.feature-card__icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(79,70,229,0.18), rgba(20,184,166,0.18));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary-strong);
  margin-bottom: 18px;
}
.feature-card__icon svg { width: 22px; height: 22px; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p {
  color: var(--text-3);
  font-size: 0.94rem;
  margin: 0;
}

/* ---------- Two-column rows ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split--reverse > :first-child { order: 2; }
@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; gap: 36px; }
  .split--reverse > :first-child { order: 0; }
}

.split__copy h2 { margin-bottom: 18px; }
.split__copy p { color: var(--text-3); font-size: 1.05rem; }
.split__copy .checks {
  list-style: none;
  padding: 0;
  margin: 22px 0;
}
.split__copy .checks li {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  color: var(--text-2);
  font-size: 0.96rem;
}
.split__copy .checks li::before {
  content: '\2713';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(20,184,166,0.18);
  color: var(--brand-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
}

/* ---------- Showcase cards (for split visuals) ---------- */
.showcase {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 28px;
  background: linear-gradient(135deg, rgba(79,70,229,0.18), rgba(20,184,166,0.10));
  border: 1px solid var(--border);
  min-height: 280px;
  box-shadow: var(--shadow-2);
}

.showcase--code pre {
  background: rgba(7,9,15,0.9);
  border-radius: var(--radius-md);
  padding: 18px;
  margin: 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: #DFE3F0;
  line-height: 1.55;
  border: 1px solid var(--border);
}
.showcase--code .h-key { color: #93C5FD; }
.showcase--code .h-str { color: #86EFAC; }
.showcase--code .h-num { color: #FBBF24; }
.showcase--code .h-com { color: #6B7280; }

.flow-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.flow-card__step {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  color: #fff;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.85rem;
}
.flow-card__title {
  font-size: 0.95rem;
  color: var(--text-1);
  font-weight: 600;
  margin: 0;
}
.flow-card__meta {
  font-size: 0.78rem;
  color: var(--text-3);
  margin: 2px 0 0;
}

/* ---------- Stats / metric ---------- */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 28px;
}
.metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}
.metric__value {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text-1);
  line-height: 1.1;
  background: linear-gradient(135deg, var(--brand-primary-strong), var(--brand-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric__label {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 4px;
}

/* ---------- Workflow / how it works ---------- */
.workflow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
  position: relative;
}
.workflow__step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  position: relative;
}
.workflow__step::after {
  content: '';
  position: absolute;
  right: -14px;
  top: 50%;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-primary), transparent);
  transform: translateY(-50%);
}
.workflow__step:last-child::after { display: none; }
@media (max-width: 720px) {
  .workflow__step::after { display: none; }
}
.workflow__num {
  font-family: var(--font-mono);
  color: var(--brand-accent);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.workflow__step h3 { margin-bottom: 6px; }
.workflow__step p { color: var(--text-3); margin: 0; font-size: 0.92rem; }

/* ---------- CTA banner ---------- */
.cta-banner {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  background: radial-gradient(800px 400px at 50% 0%, rgba(79,70,229,0.55), transparent 70%), linear-gradient(135deg, rgba(79,70,229,0.5), rgba(20,184,166,0.45));
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.cta-banner h2 {
  color: #fff;
  max-width: 720px;
  margin: 0 auto 14px;
}
.cta-banner p {
  color: rgba(255,255,255,0.85);
  max-width: 540px;
  margin: 0 auto 26px;
  font-size: 1.04rem;
}
.cta-banner .btn--ghost {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.32);
  color: #fff;
}
.cta-banner .btn--ghost:hover {
  background: rgba(255,255,255,0.24);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 70px 0 30px;
  background: var(--bg-0);
  color: var(--text-3);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 50px;
}
@media (max-width: 1060px) {
  .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .site-footer__grid > :nth-child(5) { grid-column: 2 / -1; }
}
@media (max-width: 880px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  .site-footer__grid > :nth-child(5) { grid-column: auto; }
}
.site-footer__about p {
  max-width: 320px;
  color: var(--text-3);
  margin-top: 16px;
  font-size: 0.92rem;
}
.site-footer h4 {
  font-size: 0.78rem;
  color: var(--text-2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer li { margin-bottom: 8px; }
.site-footer a {
  color: var(--text-3);
  font-size: 0.92rem;
}
.site-footer a:hover { color: var(--text-1); }

.site-footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.82rem;
}
.icp-line a, .icp-line span { color: var(--text-3); }

/* ---------- Page header (sub-pages) ---------- */
.page-header {
  padding: 150px 0 70px;
  text-align: center;
}
.page-header h1 {
  background: linear-gradient(180deg, var(--text-1) 0%, var(--text-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-header p {
  font-size: 1.1rem;
  color: var(--text-3);
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- Content rows ---------- */
.long-prose {
  max-width: 720px;
  margin: 0 auto;
  color: var(--text-2);
  font-size: 1.04rem;
}
.long-prose h2, .long-prose h3 { margin-top: 1.8em; }
.long-prose p { margin-bottom: 1.1em; }
.long-prose ul { padding-left: 1.4em; }
.long-prose ul li { color: var(--text-2); margin-bottom: 0.6em; }
.long-prose a {
  color: var(--brand-primary-strong);
  border-bottom: 1px dashed var(--border-strong);
}
.long-prose a:hover { color: var(--brand-accent); border-bottom-color: var(--brand-accent); }

/* ---------- Contact card ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 880px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.contact-card h3 { margin-bottom: 10px; }
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}
.contact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin: 0;
}
.contact-list .label {
  flex-shrink: 0;
  width: 80px;
  font-size: 0.84rem;
  color: var(--text-3);
}
.contact-list .value {
  color: var(--text-1);
  word-break: break-word;
}
.contact-list .value a { color: var(--brand-primary-strong); }

.form-row {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}
.form-row label {
  font-size: 0.82rem;
  color: var(--text-3);
}
.form-row input,
.form-row textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-2);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text-1);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--brand-primary-strong);
}
.form-row textarea { resize: vertical; min-height: 110px; }

/* ---------- Tool hub cards ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.tool-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  pointer-events: none;
  background: linear-gradient(135deg, rgba(99,102,241,0.35), rgba(20,184,166,0.25) 50%, transparent 75%);
  opacity: 0;
  transition: opacity var(--transition);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
}
.tool-card:hover {
  transform: translateY(-4px);
  background: var(--surface-strong);
}
.tool-card:hover::before { opacity: 1; }
.tool-card__icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(79,70,229,0.18), rgba(20,184,166,0.18));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary-strong);
}
.tool-card__icon svg { width: 22px; height: 22px; }
.tool-card__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--brand-accent);
}
.tool-card h3 { margin: 0; }
.tool-card p {
  color: var(--text-3);
  font-size: 0.94rem;
  margin: 0;
  flex: 1;
}
.tool-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
}
.tool-card__tags .badge { font-size: 0.7rem; padding: 3px 9px; }
.tool-card__cta {
  margin-top: 4px;
  align-self: flex-start;
}
.tool-card--soon {
  background: transparent;
  border-style: dashed;
  border-color: var(--border-strong);
}
.tool-card--soon::before { display: none; }
.tool-card--soon:hover { transform: none; background: var(--surface); }

/* ---------- Tool page chrome (per-tool wrapper) ---------- */
.tool-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  align-items: center;
  justify-content: center;
  font-size: 0.84rem;
  color: var(--text-3);
  margin-bottom: 16px;
}
.tool-breadcrumb a { color: var(--text-3); }
.tool-breadcrumb a:hover { color: var(--text-1); }
.tool-breadcrumb__sep { color: var(--text-dim); }
.tool-shell {
  background: #FFFFFF;
  color: #0B0F19;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-2);
}
:root[data-theme='light'] .tool-shell { background: #FFFFFF; }
.tool-shell--flush { padding: 0; overflow: hidden; }
.tool-privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-3);
  margin-top: 18px;
}
.tool-privacy-note::before {
  content: '🔒';
  font-size: 0.95rem;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 700ms var(--easing), transform 700ms var(--easing);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

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