:root {
  /* Brand */
  --color-teal-50: #F0FAF7;
  --color-teal-100: #C8EDE4;
  --color-teal-300: #5EC8A8;
  --color-teal-500: #1A9A78;
  --color-teal-700: #0F6E56;
  --color-teal-900: #0A4A38;

  /* Neutrals */
  --color-black: #0A0A0A;
  --color-gray-900: #1A1A1A;
  --color-gray-700: #3D3D3A;
  --color-gray-500: #6B6B67;
  --color-gray-300: #B4B2A9;
  --color-gray-100: #E8E6E1;
  --color-gray-50: #F5F4F1;
  --color-white: #FFFFFF;

  /* Semantic */
  --color-success: #22C55E;
  --color-error: #E24B4A;
  --color-warning: #EF9F27;
  --color-info: #185FA5;

  /* Page */
  --bg-page: #FFFFFF;
  --bg-subtle: #FAFAF9;
  --bg-muted: #F5F4F1;
  --bg-border: #EBEBEA;

  /* Text */
  --text-primary: #0A0A0A;
  --text-secondary: #4A4A48;
  --text-tertiary: #9A9994;
  --text-disabled: #C4C2BC;
  --text-inverse: #FFFFFF;

  /* Borders */
  --border-subtle: rgba(0,0,0,0.06);
  --border-default: rgba(0,0,0,0.10);
  --border-medium: rgba(0,0,0,0.16);
  --border-strong: rgba(0,0,0,0.24);

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06),
               0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08),
               0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10),
               0 2px 8px rgba(0,0,0,0.06);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.12),
               0 8px 24px rgba(0,0,0,0.06);
  --shadow-teal: 0 8px 32px rgba(15,110,86,0.18),
                 0 2px 8px rgba(15,110,86,0.10);
}

:root {
  /* Scale */
  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 15px;
  --text-md: 17px;
  --text-lg: 20px;
  --text-xl: 24px;
  --text-2xl: 32px;
  --text-3xl: 42px;
  --text-4xl: 56px;
  --text-hero: clamp(48px, 6.5vw, 80px);

  /* Line heights */
  --leading-tight: 1.08;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  /* Letter spacing */
  --tracking-tighter: -0.04em;
  --tracking-tight: -0.025em;
  --tracking-snug: -0.015em;
  --tracking-normal: 0em;
  --tracking-wide: 0.04em;
  --tracking-wider: 0.08em;
  --tracking-widest: 0.12em;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection {
  background: var(--color-teal-100);
  color: var(--color-teal-900);
}

:focus-visible {
  outline: 2px solid var(--color-teal-700);
  outline-offset: 3px;
  border-radius: 4px;
}

:focus:not(:focus-visible) {
  outline: none;
}

:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --max-width: 1160px;
  --nav-height: 60px;
  --section-padding: clamp(64px, 8vw, 120px) clamp(16px, 4vw, 32px);
}

:root {
  --dur-instant: 80ms;
  --dur-fast: 150ms;
  --dur-normal: 250ms;
  --dur-slow: 400ms;
  --dur-slower: 600ms;
  --dur-slowest: 900ms;

  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-back: cubic-bezier(0.36, 0, 0.66, -0.56);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-snappy: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);

  --stagger-1: 60ms;
  --stagger-2: 120ms;
  --stagger-3: 180ms;
  --stagger-4: 240ms;
  --stagger-5: 300ms;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .motion-safe {
    display: none !important;
  }
  .motion-reduce {
    display: block !important;
  }
}

.motion-reduce {
  display: none;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--dur-slower) var(--ease-premium),
    transform var(--dur-slower) var(--ease-premium);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: var(--stagger-1); }
.reveal-delay-2 { transition-delay: var(--stagger-2); }
.reveal-delay-3 { transition-delay: var(--stagger-3); }
.reveal-delay-4 { transition-delay: var(--stagger-4); }
.reveal-delay-5 { transition-delay: var(--stagger-5); }

.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition:
    opacity var(--dur-slower) var(--ease-premium),
    transform var(--dur-slower) var(--ease-premium);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity var(--dur-slower) var(--ease-premium),
    transform var(--dur-slower) var(--ease-spring);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

.btn-primary,
.btn-teal,
[class*="btn-hero"] {
  transition:
    background var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
  will-change: transform;
}

.btn-primary:hover,
.btn-teal:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-teal);
}

.btn-primary:active,
.btn-teal:active {
  transform: translateY(0) scale(0.98);
  box-shadow: none;
  transition-duration: var(--dur-instant);
}

.card-hover {
  transition:
    transform var(--dur-normal) var(--ease-smooth),
    box-shadow var(--dur-normal) var(--ease-smooth),
    border-color var(--dur-normal) var(--ease-smooth);
  will-change: transform;
}

.card-hover:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-medium);
}

.pricing-card {
  transition:
    transform var(--dur-normal) var(--ease-smooth),
    box-shadow var(--dur-normal) var(--ease-smooth),
    border-color var(--dur-slow) var(--ease-out);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular:hover {
  box-shadow: var(--shadow-teal), var(--shadow-lg);
}

nav {
  transition:
    background var(--dur-slow) var(--ease-out),
    box-shadow var(--dur-slow) var(--ease-out),
    backdrop-filter var(--dur-slow) var(--ease-out);
}

nav.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 1px 0 var(--border-subtle);
}

input,
textarea,
select {
  transition:
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-teal-700) !important;
  box-shadow: 0 0 0 3px var(--color-teal-50);
  outline: none;
}

.toggle-track {
  transition: background var(--dur-normal) var(--ease-out);
}

.toggle-thumb {
  transition: transform var(--dur-normal) var(--ease-spring);
}

.progress-bar-fill {
  transition: width var(--dur-slower) var(--ease-smooth);
}

@keyframes chipPopIn {
  0% { transform: scale(0.8); opacity: 0; }
  60% { transform: scale(1.05); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

.chip-enter {
  animation: chipPopIn var(--dur-normal) var(--ease-spring) forwards;
}

@keyframes statusPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(34,197,94,0.4);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(34,197,94,0);
    transform: scale(1.05);
  }
}

.status-dot-live {
  animation: statusPulse 2s var(--ease-in-out) infinite;
}

@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-border) 25%, var(--bg-muted) 50%, var(--bg-border) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.8s var(--ease-linear) infinite;
  border-radius: var(--radius-md);
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee-track {
  animation: marqueeScroll 28s var(--ease-linear) infinite;
  will-change: transform;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes toastSlideUp {
  from { transform: translateY(16px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.toast-enter {
  animation: toastSlideUp var(--dur-normal) var(--ease-spring) forwards;
}

@keyframes heroFadeUp {
  from { transform: translateY(24px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.hero-enter {
  animation: heroFadeUp var(--dur-slowest) var(--ease-premium) forwards;
}

.hero-enter-delay-1 { animation-delay: 100ms; }
.hero-enter-delay-2 { animation-delay: 200ms; }
.hero-enter-delay-3 { animation-delay: 350ms; }
.hero-enter-delay-4 { animation-delay: 500ms; }

@keyframes stepSlideIn {
  from { transform: translateX(24px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes stepSlideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(-24px); opacity: 0; }
}

.step-entering {
  animation: stepSlideIn var(--dur-normal) var(--ease-premium) forwards;
}

.step-leaving {
  animation: stepSlideOut var(--dur-fast) var(--ease-in) forwards;
}

.dropzone-drag-active {
  border-color: var(--color-teal-700) !important;
  background: var(--color-teal-50) !important;
  transform: scale(1.01);
  transition: all var(--dur-fast) var(--ease-spring);
}

@keyframes copySuccess {
  0% { transform: scale(1); }
  30% { transform: scale(0.92); }
  60% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

.copy-success {
  animation: copySuccess var(--dur-normal) var(--ease-spring) forwards;
}

@keyframes checkDraw {
  from { stroke-dashoffset: 24; }
  to { stroke-dashoffset: 0; }
}

.icon-check-animated path {
  stroke-dasharray: 24;
  stroke-dashoffset: 24;
  animation: checkDraw var(--dur-slow) var(--ease-spring) forwards;
}

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

.icon-spinner {
  animation: spinnerRotate 0.8s var(--ease-linear) infinite;
  transform-origin: center;
}

@keyframes uploadBounce {
  0%, 100% { transform: translateY(0); }
  40% { transform: translateY(-4px); }
  70% { transform: translateY(-2px); }
}

.icon-upload-animated {
  animation: uploadBounce 1.4s var(--ease-in-out) infinite;
}

@keyframes liveDotPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.15); }
}

.icon-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: liveDotPulse 2s var(--ease-in-out) infinite;
  display: inline-block;
}

.hero {
  padding: var(--section-padding);
  padding-top: calc(var(--nav-height) + clamp(48px, 6vw, 96px));
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse at 50% 0%, rgba(15,110,86,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-teal-50);
  border: 1px solid var(--color-teal-100);
  color: var(--color-teal-700);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero h1 {
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: var(--tracking-tighter);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  max-width: 760px;
  margin: 0 auto var(--space-6);
}

.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 520px;
  margin: 0 auto var(--space-10);
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-teal-700);
  color: white;
  font-size: 16px;
  font-weight: 600;
  padding: 16px 32px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: var(--tracking-snug);
  box-shadow: var(--shadow-teal);
  position: relative;
  overflow: hidden;
}

.btn-hero-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.12) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease-smooth);
}

.btn-hero-primary:hover::after {
  transform: translateX(100%);
}

.section-stagger > * {
  opacity: 0;
  transform: translateY(16px);
}

.section-stagger.revealed > *:nth-child(1) {
  animation: heroFadeUp var(--dur-slower) var(--ease-premium) calc(var(--stagger-1) * 0) forwards;
}

.section-stagger.revealed > *:nth-child(2) {
  animation: heroFadeUp var(--dur-slower) var(--ease-premium) var(--stagger-1) forwards;
}

.section-stagger.revealed > *:nth-child(3) {
  animation: heroFadeUp var(--dur-slower) var(--ease-premium) var(--stagger-2) forwards;
}

.section-stagger.revealed > *:nth-child(4) {
  animation: heroFadeUp var(--dur-slower) var(--ease-premium) var(--stagger-3) forwards;
}

.count-up {
  font-variant-numeric: tabular-nums;
  transition: none;
}

.eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-teal-700);
  display: block;
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: clamp(28px, 3.5vw, var(--text-3xl));
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-sub {
  font-size: var(--text-md);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 540px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
}

.period-teal {
  color: var(--color-teal-700);
}

.upgrade-card {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  background: var(--bg-subtle);
}

.upgrade-card-icon {
  font-size: 32px;
  margin-bottom: var(--space-4);
}

.upgrade-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.upgrade-card-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--leading-relaxed);
}

.upgrade-card .btn-upgrade {
  display: inline-block;
  background: var(--color-teal-700);
  color: white;
  padding: 11px 24px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease-out);
}

.upgrade-card .btn-upgrade:hover {
  background: var(--color-teal-900);
}

.upgrade-card-note {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-3);
}