:root {
  --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --color-text: #0f172a;
  --color-muted: #475569;
  --color-subtle: #94a3b8;
  --color-primary: #2563eb;
  --color-primary-soft: #eff4ff;
  --color-secondary: #6366f1;
  --color-accent: #06b6d4;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.15);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --container-width: min(1200px, calc(100vw - 3.5rem));
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: linear-gradient(135deg, #e0e7ff 0%, #f3e8ff 100%);
  background-attachment: fixed;
  position: relative;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.85) 0%, rgba(248, 250, 252, 0.85) 100%);
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.page {
  display: flex;
  flex-direction: column;
}

/* Skip to content link for accessibility */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 20px;
  z-index: 9999;
  padding: 12px 24px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: top var(--transition-base);
}

.skip-to-content:focus {
  top: 20px;
  outline: 3px solid #667eea;
  outline-offset: 4px;
}

.container {
  width: var(--container-width);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
  border-bottom: 1px solid rgba(102, 126, 234, 0.15);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
}

.site-header::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.site-header:hover::before {
  opacity: 1;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
}

.site-header__inner .btn--ghost {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.12), rgba(118, 75, 162, 0.12));
  border: 2px solid transparent;
  background-clip: padding-box;
  position: relative;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
  animation: headerButtonGlow 3s ease-in-out infinite;
}

.site-header__inner .btn--ghost::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 999px;
  padding: 2px;
  background: linear-gradient(135deg, #667eea, #764ba2, #06b6d4);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  z-index: -1;
  animation: rotateGradient 3s linear infinite;
}

@keyframes headerButtonGlow {
  0%, 100% {
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
  }
  50% {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
  }
}

@keyframes rotateGradient {
  0% {
    filter: hue-rotate(0deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

.site-header__inner .btn--ghost:hover {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.35);
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  transition: all var(--transition-base);
}

.brand::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  transition: width var(--transition-base);
}

.brand:hover::after {
  width: 100%;
}

.nav {
  display: flex;
  gap: 12px;
  font-size: 15px;
  color: var(--color-muted);
}

.nav a {
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  position: relative;
  transition: all var(--transition-base);
  color: var(--color-text);
  background: transparent;
}

.nav a::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav a:hover {
  color: #667eea;
  transform: translateY(-2px);
}

.nav a:hover::before {
  opacity: 1;
}

.nav a:active {
  transform: translateY(0);
}

/* Ripple effect for navigation links */
.nav a {
  overflow: hidden;
}

.nav a .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(102, 126, 234, 0.4);
  width: 20px;
  height: 20px;
  margin-top: -10px;
  margin-left: -10px;
  animation: ripple-animation 0.6s ease-out;
  pointer-events: none;
}

@keyframes ripple-animation {
  from {
    transform: scale(0);
    opacity: 1;
  }
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Header scroll effect */
.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.98);
}

.site-header.scrolled .site-header__inner {
  padding: 14px 0;
}

/* Shine effect wrapper - using pseudo-element creatively */
.nav a {
  position: relative;
}

.nav a span {
  position: relative;
  z-index: 1;
}

/* Add icon for external links */
.nav a[target="_blank"] {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav a[target="_blank"]::after {
  content: "↗";
  font-size: 11px;
  opacity: 0.7;
  transition: all var(--transition-base);
}

.nav a[target="_blank"]:hover::after {
  opacity: 1;
  transform: translate(2px, -2px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  transform-style: preserve-3d;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.6);
  outline-offset: 3px;
}

.btn--primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  box-shadow: 0 4px 15px 0 rgba(102, 126, 234, 0.4);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.btn--primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px 0 rgba(102, 126, 234, 0.5);
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.btn--ghost {
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
  border: 1.5px solid rgba(102, 126, 234, 0.3);
  font-weight: 600;
}

.btn--ghost:hover {
  background: rgba(102, 126, 234, 0.2);
  border-color: rgba(102, 126, 234, 0.5);
  transform: translateY(-2px);
}

.btn--text {
  padding: 0;
  border: none;
  background: none;
  color: var(--color-primary);
  font-weight: 600;
}

.btn--text span {
  transition: transform 160ms ease;
}

.btn--text:hover span {
  transform: translateX(4px);
}

.btn--soft {
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
}

.btn--soft:hover {
  background: rgba(37, 99, 235, 0.2);
}

.btn--line {
  border-color: rgba(15, 23, 42, 0.12);
  color: var(--color-text);
}

.btn--line:hover {
  border-color: rgba(37, 99, 235, 0.4);
  color: var(--color-primary);
}

.btn--block {
  width: 100%;
  justify-content: center;
}

.hero {
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero::after {
  content: "";
  position: absolute;
  top: 60px;
  right: 8%;
  width: 500px;
  height: 500px;
  background: radial-gradient(
    circle,
    rgba(99, 102, 241, 0.08) 0%,
    rgba(37, 99, 235, 0.05) 40%,
    rgba(6, 182, 212, 0.03) 70%,
    transparent 100%
  );
  filter: blur(60px);
  z-index: -1;
  animation: floatBubble 8s ease-in-out infinite;
}

@keyframes floatBubble {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-20px, -20px) scale(1.05);
  }
}

.hero__grid {
  display: grid;
  gap: 60px;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  align-items: center;
}

.hero__content {
  display: grid;
  gap: 28px;
}

.hero__eyebrow {
  font-size: 14px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-subtle);
}

.hero h1 {
  margin: 0;
  font-size: clamp(36px, 6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.hero__summary {
  margin: 0;
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 560px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.hero__bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
  color: var(--color-muted);
}

.hero__bullets li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
}

.hero__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.hero__panel {
  display: grid;
  gap: 18px;
}

.hero__card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 1);
  padding: 32px;
  display: grid;
  gap: 28px;
  position: relative;
  animation: slideInRight 0.8s ease-out 0.3s both;
  transition: all var(--transition-base);
}

.hero__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 1);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero__card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--color-muted);
}

.hero__card-header span {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  font-weight: 600;
}

.hero__card-body dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.hero__card-body dt {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-subtle);
}

.hero__card-body dd {
  margin: 6px 0 0;
  font-size: 20px;
  font-weight: 600;
}

.hero__chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 64px;
}

.hero__chart-bar {
  flex: 1;
  height: calc(30px + 8px * var(--i, 1));
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(102, 126, 234, 0.4), rgba(118, 75, 162, 0.3));
  animation: growBar 1.5s ease-out forwards;
  animation-delay: calc(0.1s * var(--i, 1));
  transform-origin: bottom;
  transform: scaleY(0);
  transition: all var(--transition-fast);
}

.hero__chart-bar:hover {
  transform: scaleY(1.1);
  background: linear-gradient(180deg, rgba(102, 126, 234, 0.6), rgba(118, 75, 162, 0.5));
}

@keyframes growBar {
  to {
    transform: scaleY(1);
  }
}

.hero__chart-bar--up {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.5), rgba(102, 126, 234, 0.4));
}

.hero__chart-bar--up:hover {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.7), rgba(102, 126, 234, 0.6));
}

.hero__chart-bar:nth-child(1) {
  --i: 5;
}

.hero__chart-bar:nth-child(2) {
  --i: 2;
}

.hero__chart-bar:nth-child(3) {
  --i: 6;
}

.hero__chart-bar:nth-child(4) {
  --i: 3;
}

.hero__chart-bar:nth-child(5) {
  --i: 7;
}

.hero__chart-bar:nth-child(6) {
  --i: 4;
}

.hero__card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--color-muted);
}

.hero__card-footer a {
  color: var(--color-primary);
  font-weight: 600;
}

.hero__badge {
  border-radius: var(--radius-md);
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.16), rgba(37, 99, 235, 0.12));
  border: 1px solid rgba(56, 189, 248, 0.18);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: 12px;
  font-size: 14px;
  color: var(--color-muted);
}

.hero__badge p {
  margin: 0;
  font-weight: 600;
  color: var(--color-text);
}

.hero__badge div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero__badge span:last-child {
  color: #22c55e;
  font-weight: 600;
}

.section {
  padding: 96px 0;
}

.section__head {
  text-align: center;
  display: grid;
  gap: 18px;
  margin-bottom: 64px;
}

.section__title {
  margin: 0;
  font-size: clamp(30px, 4vw, 38px);
}

.section__subtitle {
  margin: 0 auto;
  max-width: 640px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-muted);
}

.plans {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(3, 1fr);
  max-width: 1000px;
  margin: 0 auto;
}

.plan-card {
  --plan-accent: #2563eb;
  --plan-accent-soft: rgba(37, 99, 235, 0.12);
  --plan-accent-border: rgba(37, 99, 235, 0.18);
  --plan-border: rgba(148, 163, 184, 0.16);
  --plan-heading: var(--color-text);
  --plan-text: var(--color-muted);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  background: var(--color-card);
  display: grid;
  gap: 28px;
  border: 1px solid var(--plan-border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: all var(--transition-base);
  animation: slideInUp 0.6s ease-out forwards;
  opacity: 0;
}

.plan-card:nth-child(1) {
  animation-delay: 0.1s;
}

.plan-card:nth-child(2) {
  animation-delay: 0.2s;
}

.plan-card:nth-child(3) {
  animation-delay: 0.3s;
}

.plan-card:nth-child(4) {
  animation-delay: 0.4s;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.plan-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border-color: var(--plan-accent-border);
}

.plan-card::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle at center, var(--plan-accent-soft), transparent 70%);
  z-index: -1;
  transition: transform 160ms ease, opacity 160ms ease;
}

.plan-card:hover::after {
  transform: scale(1.05);
  opacity: 1;
}

.plan-card header {
  display: grid;
  gap: 14px;
}

.plan-card__tag {
  width: fit-content;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--plan-accent-soft);
  color: var(--plan-accent);
}

.plan-card h3 {
  margin: 0;
  font-size: 26px;
  color: var(--plan-heading);
}

.plan-card__price {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--plan-text);
}

.plan-card__price strong {
  font-size: 32px;
  color: var(--plan-heading);
  letter-spacing: -0.01em;
}

.plan-card__price span {
  font-size: 15px;
}

.plan-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
  font-size: 15px;
  color: var(--plan-text);
}

.plan-card ul li {
  position: relative;
  padding-left: 28px;
}

.plan-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 6px;
  background: var(--plan-accent-soft);
  border: 1px solid var(--plan-accent-border);
}

.plan-card a.btn {
  justify-self: flex-start;
  padding-inline: 26px;
}

.plan-card--starter .btn--soft {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.95), rgba(251, 191, 36, 0.9));
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 18px 32px rgba(249, 115, 22, 0.28);
}

.plan-card--starter .btn--soft:hover {
  transform: translateY(-2px);
}

.plan-card--starter {
  --plan-accent: #f97316;
  --plan-accent-soft: rgba(249, 115, 22, 0.18);
  --plan-accent-border: rgba(249, 115, 22, 0.32);
  --plan-border: rgba(249, 115, 22, 0.24);
  --plan-heading: #0f172a;
  --plan-text: #1f2937;
  background: linear-gradient(160deg, rgba(251, 146, 60, 0.26), #fff7ed);
}

.plan-card--growth {
  --plan-accent: #818cf8;
  --plan-accent-soft: rgba(129, 140, 248, 0.2);
  --plan-accent-border: rgba(129, 140, 248, 0.32);
  --plan-border: rgba(129, 140, 248, 0.28);
  --plan-heading: #0f172a;
  --plan-text: #1f2937;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(255, 255, 255, 0.95) 50%, rgba(118, 75, 162, 0.05) 100%);
  transform: translateY(-10px) scale(1.02);
  border: 2px solid transparent;
  background-clip: padding-box;
  position: relative;
}

.plan-card--growth::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, #667eea, #764ba2, #06b6d4);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  z-index: -1;
}

.plan-card--growth .btn--primary {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.9), rgba(56, 189, 248, 0.9));
  box-shadow: 0 18px 34px rgba(99, 102, 241, 0.35);
}

.plan-card--enterprise {
  --plan-accent: #14b8a6;
  --plan-accent-soft: rgba(20, 184, 166, 0.22);
  --plan-accent-border: rgba(20, 184, 166, 0.32);
  --plan-border: rgba(20, 184, 166, 0.28);
  --plan-heading: #022c22;
  --plan-text: #0f3c27;
  background: linear-gradient(160deg, rgba(45, 212, 191, 0.24), rgba(236, 253, 245, 0.94));
}

.plan-card--enterprise .btn--line {
  border-color: rgba(20, 184, 166, 0.48);
  color: #047857;
}

.plan-card--enterprise .btn--line:hover {
  border-color: rgba(20, 184, 166, 0.65);
  color: #0f766e;
}

.plan-card--custom {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.88), rgba(79, 70, 229, 0.75));
  backdrop-filter: blur(10px);
  color: rgba(248, 250, 252, 0.95);
  border: 2px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 28px 58px rgba(15, 23, 42, 0.32);
  position: relative;
}

.plan-card--custom::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b, #ef4444, #ec4899);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  z-index: -1;
  opacity: 0.8;
  animation: premiumBorderGlow 3s ease-in-out infinite;
}

@keyframes premiumBorderGlow {
  0%, 100% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
    filter: brightness(1.2);
  }
}

.plan-card--custom:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 35px 70px rgba(15, 23, 42, 0.45), 0 0 40px rgba(251, 191, 36, 0.2);
}

.plan-card--custom::after {
  display: none;
}

.plan-card--custom .plan-card__tag {
  background: rgba(248, 250, 252, 0.16);
  color: rgba(248, 250, 252, 0.92);
}

.plan-card--custom h3 {
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.plan-card--custom .plan-card__price strong {
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.plan-card--custom ul {
  color: rgba(226, 232, 240, 0.86);
}

.plan-card--custom ul li::before {
  background: rgba(248, 250, 252, 0.18);
  border-color: rgba(248, 250, 252, 0.2);
}

.plan-card--full {
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 36px;
  align-items: center;
  padding: 40px;
  margin-top: 8px;
}

.plan-card--full .plan-card__tag {
  margin-bottom: 6px;
}

.plan-card__intro {
  display: grid;
  gap: 14px;
}

.plan-card__price--inline {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.plan-card__price--inline span {
  font-size: 16px;
  color: rgba(148, 163, 184, 0.9);
}

.plan-card--custom .plan-card__price--inline span {
  color: rgba(226, 232, 240, 0.85);
}

.plan-card__note {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
}

.plan-card--custom .plan-card__note {
  color: rgba(226, 232, 240, 0.82);
}

.plan-card__details {
  display: grid;
  gap: 22px;
}

.plan-card__details ul {
  gap: 16px;
  font-size: 16px;
}

.plan-card--custom .btn--primary {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  box-shadow: 0 20px 36px rgba(251, 191, 36, 0.45);
  color: #1f2937;
  font-weight: 700;
}

.plan-card--custom .btn--primary:hover {
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  box-shadow: 0 25px 45px rgba(251, 191, 36, 0.6);
  transform: translateY(-4px) scale(1.05);
}

.section--muted {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(248, 250, 252, 0.8));
}

/* Training Services Section */
.training-services {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  max-width: 1100px;
  margin: 0 auto;
}

.training-card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95));
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(102, 126, 234, 0.15);
  padding: 36px;
  display: flex;
  gap: 28px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.training-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #667eea, #764ba2, #06b6d4);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.training-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  border-color: rgba(102, 126, 234, 0.3);
}

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

.training-card__icon {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #667eea;
  transition: all var(--transition-base);
}

.training-card:hover .training-card__icon {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.18), rgba(118, 75, 162, 0.15));
  transform: scale(1.1) rotate(5deg);
}

.training-card__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.training-card__content h3 {
  margin: 0;
  font-size: 24px;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.training-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
}

.training-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.training-tag {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.08));
  color: #667eea;
  border: 1px solid rgba(102, 126, 234, 0.2);
  transition: all var(--transition-base);
}

.training-card:hover .training-tag {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.12));
  border-color: rgba(102, 126, 234, 0.3);
}

.training-card__includes {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
  font-size: 15px;
  color: var(--color-muted);
}

.training-card__includes li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.training-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(148, 163, 184, 0.15);
  margin-top: auto;
}

.training-card__price {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.training-card__price-label {
  font-size: 13px;
  color: var(--color-subtle);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.training-card__price-amount {
  font-size: 32px;
  font-weight: 700;
  color: #667eea;
  letter-spacing: -0.02em;
}

.training-card__footer .btn {
  white-space: nowrap;
}

.feature-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature {
  padding: 32px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95));
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  display: grid;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.feature::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.08), transparent 70%);
  pointer-events: none;
  transition: all var(--transition-slow);
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 1);
  border-color: rgba(102, 126, 234, 0.25);
}

.feature:hover::before {
  transform: translate(-20px, -20px) scale(1.2);
  opacity: 0.8;
}

.feature__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(37, 99, 235, 0.12), rgba(99, 102, 241, 0.18));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  color: var(--color-primary);
}

.feature h3 {
  margin: 0;
  font-size: 20px;
}

.feature p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.section--contact {
  background: linear-gradient(135deg, rgba(224, 231, 255, 0.4), rgba(243, 232, 255, 0.4));
}

.contact {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  align-items: center;
}

.contact__content {
  display: grid;
  gap: 18px;
}

.contact__eyebrow {
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-subtle);
}

.contact__content h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 36px);
}

.contact__content p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.contact__panel {
  background: linear-gradient(145deg, #ffffff, rgba(248, 250, 252, 0.95));
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 2px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 20px 50px rgba(102, 126, 234, 0.25);
  display: grid;
  gap: 24px;
  position: relative;
  transition: all var(--transition-base);
}

.contact__panel::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, #667eea, #764ba2, #06b6d4);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  z-index: -1;
  opacity: 0.6;
  animation: borderGlow 3s ease-in-out infinite;
}

@keyframes borderGlow {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

.contact__panel:hover {
  transform: translateY(-5px);
  box-shadow: 0 30px 60px rgba(102, 126, 234, 0.35);
}

.contact__note {
  font-size: 14px;
  color: var(--color-muted);
  display: grid;
  gap: 10px;
}

.contact__note p {
  margin: 0;
}

.site-footer {
  padding: 32px 0;
  background: #fff;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--color-muted);
}

.site-footer nav {
  display: flex;
  gap: 18px;
}

.site-footer nav a:hover {
  color: var(--color-primary);
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 40;
}

.modal.is-visible {
  display: flex;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(10px);
}

.modal__dialog {
  position: relative;
  width: min(420px, calc(100vw - 32px));
  border-radius: var(--radius-md);
  padding: 32px;
  background: var(--color-card);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 20px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  z-index: 1;
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: none;
  background: rgba(226, 232, 240, 0.6);
  color: var(--color-text);
  font-size: 24px;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease;
}

.modal__close:hover {
  background: rgba(203, 213, 225, 0.9);
  transform: scale(1.05);
}

.modal__content h3 {
  margin: 0;
  font-size: 22px;
}

.modal__content p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.modal__qr {
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(148, 163, 184, 0.4);
  padding: 12px;
  background: rgba(248, 250, 252, 0.9);
}

.modal__note {
  font-size: 13px;
  color: var(--color-subtle);
}

@media (max-width: 960px) {
  .hero {
    padding: 100px 0 80px;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .plans {
    grid-template-columns: repeat(2, 1fr);
    max-width: 700px;
  }

  .hero__panel {
    justify-self: center;
    width: min(500px, 94%);
  }

  .hero__content {
    text-align: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__bullets {
    text-align: left;
    max-width: 500px;
    margin: 0 auto;
  }

  .contact {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact__panel {
    max-width: 400px;
    margin: 0 auto;
  }

  .contact__panel .btn--primary {
    font-size: 16px;
    padding: 16px 28px;
  }

  .contact__panel::after {
    bottom: -30px;
    font-size: 13px;
  }

  .feature-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .training-services {
    grid-template-columns: 1fr;
  }

  .training-card {
    flex-direction: column;
    padding: 28px;
  }

  .training-card__icon {
    width: 64px;
    height: 64px;
  }
}

@media (max-width: 768px) {
  .site-header__inner {
    padding: 18px 0;
  }

  .brand {
    font-size: 18px;
  }

  .nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .header-actions .btn--ghost {
    display: none;
  }

  .hero h1 {
    font-size: clamp(32px, 8vw, 48px);
    line-height: 1.2;
  }

  .hero__summary {
    font-size: 16px;
    line-height: 1.6;
  }

  .plans {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 500px;
  }

  .plan-card--growth {
    transform: none;
  }

  .section {
    padding: 72px 0;
  }

  .section__title {
    font-size: clamp(26px, 5vw, 32px);
  }

  .section__subtitle {
    font-size: 16px;
  }

  .plan-card--full {
    grid-template-columns: 1fr;
    padding: 32px 24px;
    gap: 28px;
  }

  .feature {
    padding: 28px 24px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }

  /* Disable parallax on mobile */
  .hero {
    transform: none !important;
  }

  .hero__card {
    transform: none !important;
  }

  .training-card__footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .training-card__footer .btn {
    width: 100%;
  }
}

@media (max-width: 540px) {
  .container {
    width: calc(100vw - 2.5rem);
  }

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header__inner {
    padding: 16px 0;
  }
}

/* Scroll animations */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.feature.scroll-animate {
  transition-delay: calc(0.1s * var(--i, 0));
}

.feature:nth-child(1) { --i: 0; }
.feature:nth-child(2) { --i: 1; }
.feature:nth-child(3) { --i: 2; }
.feature:nth-child(4) { --i: 3; }

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Loading animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Page loader */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #e0e7ff 0%, #f3e8ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.loader-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(102, 126, 234, 0.2);
  border-top-color: #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loader-text {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInOut 1.5s ease-in-out infinite;
}

@keyframes fadeInOut {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Mobile menu styles */
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  gap: 6px;
  position: relative;
  z-index: 1001;
  transition: all var(--transition-base);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.mobile-menu-toggle:hover .hamburger-line {
  background: linear-gradient(90deg, #764ba2, #667eea);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95));
  backdrop-filter: blur(16px);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, box-shadow 0.4s ease;
  z-index: 1000;
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.mobile-menu.active {
  max-height: 400px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  padding: 24px;
  gap: 4px;
}

.mobile-nav a {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  border-radius: 12px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-nav a::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-nav a:hover {
  color: #667eea;
  transform: translateX(8px);
}

.mobile-nav a:hover::before {
  opacity: 1;
}

.mobile-nav a[target="_blank"]::after {
  content: "↗";
  font-size: 14px;
  opacity: 0.6;
}

/* Enhanced contact button */
.contact__panel .btn--primary {
  font-size: 18px;
  padding: 18px 36px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
  position: relative;
  animation: pulseButton 2s ease-in-out infinite;
  letter-spacing: 0.5px;
}

@keyframes pulseButton {
  0% {
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
  }
  50% {
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.6), 0 0 30px rgba(102, 126, 234, 0.3);
  }
  100% {
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
  }
}

.contact__panel .btn--primary::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 999px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s ease;
  filter: blur(10px);
}

.contact__panel .btn--primary:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

.contact__panel .btn--primary:hover::after {
  opacity: 0.5;
}

/* Highlight animation when navigating from pricing cards */
.highlight-target {
  animation: highlightPulse 1s ease-out 3;
}

@keyframes highlightPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

/* Arrow indicator for contact section */
.contact__panel::after {
  content: "👆 点击开始咨询";
  position: absolute;
  bottom: -35px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  animation: bounceArrow 2s ease-in-out infinite;
  white-space: nowrap;
}

@keyframes bounceArrow {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* Special styling for contact section when it's the target */
.section--contact:target {
  background: linear-gradient(135deg, rgba(224, 231, 255, 0.6), rgba(243, 232, 255, 0.6));
  animation: flashBackground 0.8s ease-out;
}

@keyframes flashBackground {
  0% {
    background: linear-gradient(135deg, rgba(224, 231, 255, 0.8), rgba(243, 232, 255, 0.8));
  }
  100% {
    background: linear-gradient(135deg, rgba(224, 231, 255, 0.6), rgba(243, 232, 255, 0.6));
  }
}