/* Guochao Education — Dora-inspired landing */
:root {
  --blue: #087bff;
  --blue-deep: #1465fa;
  --blue-mid: #3587f5;
  --blue-soft: #5aa1ff;
  --ink: #161d2b;
  --ink-2: #172038;
  --ink-3: #365178;
  --muted: #5a6f8a;
  --line: #d4e7ff;
  --paper: #ffffff;
  --mist: #f5faff;
  --mist-2: #f8fbff;
  --hero: #7cb0ff;
  --radius: 16px;
  --radius-pill: 999px;
  --header-h: 76px;
  --header-height: 76px;
  --page: min(1120px, calc(100% - 40px));
  --font-display: "Manrope", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Manrope", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", STSong, serif;
  --primary: #1e5a6c;
  --red: #c44732;
  --red-deep: #9a3424;
  --shadow-soft: 0 9px 20px rgba(47, 140, 231, 0.1);
  --shadow-cta: 0 5px 16px rgba(30, 117, 217, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input {
  font: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 1000;
  padding: 8px 12px;
  background: var(--blue);
  color: #fff;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

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

/* Header — original education nav */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  color: var(--ink);
  background: rgba(245, 249, 250, 0.94);
  border-bottom: 1px solid rgba(26, 40, 48, 0.08);
  transition: background 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
}

.site-header.is-scrolled,
.site-header.menu-visible {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 10px 30px rgba(30, 42, 48, 0.08);
}

.nav-shell {
  width: var(--page);
  height: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 0;
}

.brand img {
  width: auto;
  height: 52px;
  object-fit: contain;
  display: block;
}

.brand-name {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 19px;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
  gap: clamp(15px, 1.6vw, 28px);
}

.site-nav > a {
  position: relative;
  padding: 27px 0 25px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: inherit;
  text-decoration: none;
}

.site-nav > a::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 18px;
  height: 2px;
  background: var(--primary);
  transition: left 0.25s ease, right 0.25s ease;
}

.site-nav > a:hover::after,
.site-nav > a.is-active::after {
  left: 0;
  right: 0;
}

.site-nav .nav-cta {
  padding: 11px 17px;
  color: #fff;
  background: var(--red);
  border-radius: 4px;
}

.site-nav .nav-cta::after {
  display: none;
}

.site-nav .nav-cta:hover {
  background: var(--red-deep);
}

.site-nav .nav-cta.is-active {
  box-shadow: 0 0 0 3px rgba(196, 71, 50, 0.2), 0 10px 24px rgba(196, 71, 50, 0.25);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 0;
  background: transparent;
  padding: 10px;
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* CTA buttons */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 168px;
  height: 52px;
  padding: 0 8px 0 22px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

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

.btn-cta-primary {
  color: #fff;
  background: linear-gradient(90deg, #1c5df6 0%, #34e1ff 110%);
  box-shadow: var(--shadow-cta);
}

.btn-cta-secondary {
  color: var(--ink-2);
  background: #fff;
  box-shadow: var(--shadow-cta);
}

.btn-arrow {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.btn-arrow-blue {
  background: rgba(8, 123, 255, 0.12);
  color: var(--blue);
}

.section-cta {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

/* Section headings */
.section-heading {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

.section-badge {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--blue);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--ink);
}

.section-heading h2 span {
  background: linear-gradient(90deg, #1c5df6, #34c9ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-heading p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.section-heading--light h2 {
  color: var(--ink-2);
}

.mobile-br {
  display: none;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 48px) 0 64px;
  overflow: hidden;
  background: linear-gradient(180deg, #9bc4ff 0%, #7cb0ff 45%, #a8c9ff 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 30%, rgba(255, 255, 255, 0.45), transparent 28%),
    radial-gradient(circle at 82% 20%, rgba(52, 225, 255, 0.28), transparent 30%),
    radial-gradient(circle at 50% 85%, rgba(28, 93, 246, 0.18), transparent 40%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin-bottom: 56px;
  animation: rise 0.8s ease both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(42px, 8vw, 72px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: #000;
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.3;
  color: #000;
  margin-bottom: 16px;
}

.hero-title .highlight {
  background: linear-gradient(90deg, #0a4de8, #1ad4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  color: rgba(0, 0, 0, 0.72);
  font-size: 18px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.stats-bar {
  --stats-ray-duration: 4.8s;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: min(100%, 1000px);
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 8px;
  padding: 28px 20px;
  border: 1px solid rgba(8, 123, 255, 0.28);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 40px rgba(20, 60, 140, 0.12);
  animation: rise 0.9s 0.15s ease both;
}

.stats-ray {
  position: absolute;
  top: -35%;
  left: 0;
  z-index: 0;
  width: 28%;
  height: 170%;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    transparent 0%,
    rgba(90, 161, 255, 0.06) 28%,
    rgba(8, 123, 255, 0.18) 46%,
    rgba(255, 255, 255, 0.72) 50%,
    rgba(52, 200, 255, 0.22) 54%,
    rgba(90, 161, 255, 0.08) 68%,
    transparent 100%
  );
  filter: blur(0.2px);
  transform: translateX(-130%) skewX(-18deg);
  animation: stats-ray-sweep var(--stats-ray-duration) cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.stat-item {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 10px 8px;
  border-radius: 16px;
  transition: color 0.25s ease;
}

.stat-item::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: radial-gradient(ellipse 80% 70% at 50% 50%, rgba(8, 123, 255, 0.18), transparent 70%);
  opacity: 0;
  transform: scale(0.92);
  animation: stats-item-glow var(--stats-ray-duration) ease-in-out infinite;
}

.stat-item:nth-child(2)::before {
  animation-delay: 0s;
}

.stat-item:nth-child(4)::before {
  animation-delay: calc(var(--stats-ray-duration) * 0.25);
}

.stat-item:nth-child(6)::before {
  animation-delay: calc(var(--stats-ray-duration) * 0.5);
}

.stat-item:nth-child(8)::before {
  animation-delay: calc(var(--stats-ray-duration) * 0.75);
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.2;
}

.stat-label {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
}

.stat-desc {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}

.stat-divider {
  position: relative;
  z-index: 1;
  width: 1px;
  align-self: stretch;
  background: linear-gradient(180deg, transparent, rgba(26, 124, 255, 0.28), transparent);
}

@keyframes stats-ray-sweep {
  0% {
    transform: translateX(-130%) skewX(-18deg);
    opacity: 0;
  }
  8% {
    opacity: 1;
  }
  88% {
    opacity: 1;
  }
  100% {
    transform: translateX(420%) skewX(-18deg);
    opacity: 0;
  }
}

@keyframes stats-item-glow {
  0%,
  12%,
  100% {
    opacity: 0;
    transform: scale(0.92);
  }
  4%,
  10% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scenario */
.scenario-section {
  padding: 54px 0 100px;
  background: #fff;
}

.scenario-panel {
  position: relative;
  border: 1px solid rgba(8, 123, 255, 0.22);
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 75% 60% at 95% 85%, rgba(8, 123, 255, 0.32), transparent 55%),
    radial-gradient(ellipse 50% 45% at 5% 10%, rgba(52, 200, 255, 0.28), transparent 48%),
    radial-gradient(ellipse 40% 35% at 50% 50%, rgba(90, 161, 255, 0.12), transparent 60%),
    linear-gradient(145deg, #ffffff 0%, #e8f3ff 38%, #cfe4ff 72%, #b9d8ff 100%);
  box-shadow:
    0 14px 36px rgba(47, 140, 231, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.scenario-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid rgba(8, 123, 255, 0.16);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(232, 243, 255, 0.55) 100%);
  backdrop-filter: blur(10px);
}

.scenario-tab {
  position: relative;
  flex: 1 1 120px;
  min-height: 56px;
  padding: 14px 10px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.scenario-tab:hover {
  color: var(--blue-deep);
  background: rgba(8, 123, 255, 0.04);
}

.scenario-tab.is-active {
  color: var(--blue-deep);
  border-bottom-color: rgba(8, 123, 255, 0.2);
  background: rgba(8, 123, 255, 0.05);
}

.scenario-tab.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.scenario-panel.is-autoplaying .scenario-tab.is-active.is-progressing::after {
  animation: scenario-tab-progress 4.5s linear forwards;
}

.scenario-panel.is-paused .scenario-tab.is-active.is-progressing::after {
  animation-play-state: paused;
}

@keyframes scenario-tab-progress {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .scenario-panel.is-autoplaying .scenario-tab.is-active.is-progressing::after {
    animation: none;
    transform: scaleX(1);
  }
}

.scenario-stage {
  position: relative;
  padding: 28px 56px 28px 28px;
}

.scenario-next {
  position: absolute;
  top: 50%;
  right: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(8, 123, 255, 0.22);
  border-radius: 999px;
  color: var(--blue-deep);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 8px 20px rgba(20, 101, 250, 0.16);
  cursor: pointer;
  transform: translateY(-50%);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.scenario-next:hover {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 10px 24px rgba(8, 123, 255, 0.28);
  transform: translateY(-50%) translateX(2px);
}

.scenario-next:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.scenario-body {
  display: none;
  grid-template-columns: 1fr 1.15fr;
  gap: 28px;
  align-items: center;
}

.scenario-body.is-active {
  display: grid;
  animation: rise 0.35s ease both;
}

.scenario-copy h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--ink);
}

.scenario-copy p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.scenario-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue-deep);
  font-weight: 600;
}

.scenario-link:hover span:last-child {
  transform: translateX(3px);
}

.scenario-link span:last-child {
  transition: transform 0.15s;
}

.scenario-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(22, 29, 43, 0.1);
}

/* Capability */
.business-section {
  position: relative;
  padding: 92px 0 110px;
  background:
    radial-gradient(circle at 18% 12%, rgba(167, 139, 250, 0.22), transparent 38%),
    radial-gradient(circle at 88% 78%, rgba(251, 182, 206, 0.2), transparent 42%),
    linear-gradient(180deg, #f7f4ff 0%, #fff8fb 48%, #f5faff 100%);
  overflow: visible;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 42px;
  padding: 36px 28px 48px;
}

.business-card {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 28px 22px 24px;
  border-radius: 28px;
  background: #fff;
  border: 2px solid #c44732;
  box-shadow:
    0 22px 36px rgba(40, 18, 40, 0.16),
    0 4px 10px rgba(196, 71, 50, 0.12);
  transform-style: preserve-3d;
  transform-origin: center center;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
  will-change: transform;
  backface-visibility: hidden;
}

/* 外圈回声边框：跟随卡片 3D 倾斜 */
.business-card::before {
  content: "";
  position: absolute;
  inset: -16px -14px;
  border: 1.5px solid rgba(196, 71, 50, 0.32);
  border-radius: 40px;
  pointer-events: none;
  transform: translateZ(-24px) scale(1.03);
}

.business-card::after {
  content: "";
  position: absolute;
  inset: auto 12% -18px;
  height: 30px;
  border-radius: 50%;
  background: rgba(40, 18, 40, 0.2);
  filter: blur(14px);
  z-index: -1;
  pointer-events: none;
}

/*
 * 参考图扇形透视：左右对称 rotateY
 * 外侧更斜、内侧略收；每张卡自带 perspective，梯形更明显
 */
.business-card:nth-child(1) {
  z-index: 1;
  transform: perspective(720px) rotateY(32deg) scale(0.94);
}
.business-card:nth-child(2) {
  z-index: 2;
  transform: perspective(720px) rotateY(14deg) scale(0.98);
}
.business-card:nth-child(3) {
  z-index: 2;
  transform: perspective(720px) rotateY(-14deg) scale(0.98);
}
.business-card:nth-child(4) {
  z-index: 1;
  transform: perspective(720px) rotateY(-32deg) scale(0.94);
}

.business-card:nth-child(1):hover {
  transform: perspective(720px) rotateY(32deg) translateY(-8px) scale(0.95);
  box-shadow:
    0 28px 44px rgba(40, 18, 40, 0.2),
    0 6px 14px rgba(196, 71, 50, 0.16);
}
.business-card:nth-child(2):hover {
  transform: perspective(720px) rotateY(14deg) translateY(-8px) scale(0.99);
  box-shadow:
    0 28px 44px rgba(40, 18, 40, 0.2),
    0 6px 14px rgba(196, 71, 50, 0.16);
}
.business-card:nth-child(3):hover {
  transform: perspective(720px) rotateY(-14deg) translateY(-8px) scale(0.99);
  box-shadow:
    0 28px 44px rgba(40, 18, 40, 0.2),
    0 6px 14px rgba(196, 71, 50, 0.16);
}
.business-card:nth-child(4):hover {
  transform: perspective(720px) rotateY(-32deg) translateY(-8px) scale(0.95);
  box-shadow:
    0 28px 44px rgba(40, 18, 40, 0.2),
    0 6px 14px rgba(196, 71, 50, 0.16);
}

.business-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
  filter: drop-shadow(0 8px 16px rgba(90, 70, 180, 0.18));
}

.business-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.business-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 12px;
}

.business-card--guorai h3 { color: #6A4CFF; }
.business-card--employ h3 { color: #E8891A; }
.business-card--hr h3 { color: #1FA88A; }
.business-card--edu h3 { color: #2F6FE8; }

.business-card > p {
  flex: 1;
  color: #66758d;
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 0;
}

/* System */
.system-section {
  padding: 100px 0;
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%, rgba(8, 123, 255, 0.05), transparent 70%),
    #fff;
}

.system-board {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, #f7faff 0%, #fff 32%);
  box-shadow: 0 16px 48px rgba(47, 140, 231, 0.07);
  overflow: hidden;
}

.system-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 22px;
  align-items: center;
  padding: 24px 26px;
  border-bottom: 1px solid rgba(212, 231, 255, 0.75);
}

.system-row:nth-child(even) {
  background: rgba(241, 247, 255, 0.45);
}

.system-row:last-child {
  border-bottom: 0;
}

.system-row-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 76px;
  padding: 14px 8px;
  border-radius: 18px;
  text-align: center;
  color: #fff;
  background: linear-gradient(160deg, #1465fa 0%, #2f8fff 55%, #3eb0ff 100%);
  box-shadow:
    0 10px 22px rgba(20, 101, 250, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.system-row-meta b {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.system-row-meta h3 {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.25;
  color: rgba(255, 255, 255, 0.92);
}

.system-ico {
  display: block;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.system-ico svg {
  width: 100%;
  height: 100%;
  display: block;
}

.system-items {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.system-items--5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.system-items--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.system-items li {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 12px 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(212, 231, 255, 0.95);
  box-shadow: 0 4px 14px rgba(47, 140, 231, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.system-items--5 li {
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-height: 92px;
  padding: 16px 10px;
  text-align: center;
}

.system-items li:hover {
  transform: translateY(-2px);
  border-color: #a9c9ff;
  box-shadow: 0 10px 24px rgba(20, 101, 250, 0.1);
}

.system-items strong {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

.system-items p {
  margin-top: 3px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}

.system-steps {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 10px 4px 4px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(238, 245, 255, 0.65));
  border: 1px solid rgba(212, 231, 255, 0.8);
}

.system-steps li {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 12px 8px 14px;
}

.system-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 25px;
  left: calc(50% + 20px);
  right: calc(-50% + 20px);
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #7eb2ff, #d4e7ff);
}

.system-steps em {
  position: relative;
  z-index: 1;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--font-display);
  font-style: normal;
  font-size: 11px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #1465fa, #3aa0ff);
  box-shadow: 0 6px 14px rgba(20, 101, 250, 0.22);
}

.system-steps span {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  line-height: 1.3;
}

.system-foot {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 12px;
}

.system-guard-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(212, 231, 255, 0.95);
  box-shadow: 0 4px 14px rgba(47, 140, 231, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.system-guard-item:hover {
  transform: translateY(-2px);
  border-color: #a9c9ff;
  box-shadow: 0 10px 24px rgba(20, 101, 250, 0.1);
}

.system-guard-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.system-guard-item p {
  margin-top: 3px;
  font-size: 12px;
  color: var(--muted);
}

.system-goal-item {
  position: relative;
  overflow: hidden;
  padding: 16px 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, #0f5cf0 0%, #1a7dff 48%, #34c9ff 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: 0 12px 28px rgba(20, 101, 250, 0.24);
}

.system-goal-item::before {
  content: "";
  position: absolute;
  inset: auto -20% -60% auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  pointer-events: none;
}

.system-goal-kicker {
  position: relative;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  opacity: 0.88;
  margin-bottom: 6px;
}

.system-goal-item p {
  position: relative;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
}

/* Cases — hub map */
.cases-section {
  padding: 100px 0 90px;
  background:
    radial-gradient(ellipse 50% 55% at 50% 55%, rgba(255, 180, 210, 0.12), transparent 60%),
    radial-gradient(ellipse 60% 50% at 50% 48%, rgba(90, 161, 255, 0.14), transparent 65%),
    var(--mist-2);
  overflow: hidden;
}

.partner-marquee {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 12px;
  width: 100%;
}

.logos-row {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.logos-track {
  display: flex;
  width: max-content;
  gap: 16px;
  will-change: transform;
}

.hub-node {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
  width: 236px;
  padding: 16px 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, #fff, #f4f9ff);
  border: 1px solid rgba(180, 210, 255, 0.85);
  box-shadow:
    0 10px 28px rgba(47, 140, 231, 0.1),
    0 0 0 1px rgba(255, 255, 255, 0.8) inset;
}

.hub-node img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  object-position: center;
  flex-shrink: 0;
  background: transparent;
}

.hub-node span {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-2);
  line-height: 1.25;
  white-space: nowrap;
}

/* Closing */
.closing-section {
  position: relative;
  min-height: 480px;
  padding: 90px 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(90, 161, 255, 0.35), transparent 45%),
    linear-gradient(180deg, #d4e7ff 0%, #f8fbff 55%, #fff 100%);
  overflow: hidden;
}

.closing-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.closing-logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: 22px;
}

.closing-inner h2 {
  max-width: 720px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink-2);
  margin-bottom: 16px;
}

.closing-inner > p {
  max-width: 640px;
  color: var(--ink);
  margin-bottom: 28px;
  line-height: 1.75;
}

.closing-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, 360px);
  height: 60px;
  gap: 12px;
  padding: 0 8px 0 24px;
  border-radius: var(--radius-pill);
  background: #fff;
  box-shadow: var(--shadow-cta);
}

.closing-cta-text {
  color: #143976;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
}

.closing-cta-arrow {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  flex-shrink: 0;
}

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

/* Contact */
.contact-section {
  padding: 90px 0 100px;
  background: #fff;
}

.contact-head {
  text-align: center;
  margin-bottom: 40px;
}

.contact-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-top: 10px;
}

.contact-head h2 span {
  background: linear-gradient(90deg, #1c5df6, #34c9ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.contact-head p {
  margin-top: 12px;
  color: var(--muted);
}

.contact-row {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: start;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 28px;
  border-radius: 20px;
  background: var(--mist-2);
  border: 1px solid var(--line);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-3);
}

.req {
  color: #e24b4b;
  margin-right: 2px;
}

.field input {
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus {
  border-color: var(--blue-soft);
  box-shadow: 0 0 0 3px rgba(8, 123, 255, 0.12);
}

.field input[aria-invalid="true"] {
  border-color: #e24b4b;
}

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-top: 4px;
}

.form-status {
  min-height: 1.2em;
  font-size: 14px;
  color: var(--muted);
}

.form-status.is-error {
  color: #c0392b;
}

.form-status.is-success {
  color: #1e7a4a;
}

.contact-aside {
  padding: 28px 24px;
  border-radius: 20px;
  background: linear-gradient(160deg, #1465fa, #3ecfff);
  color: #fff;
}

.contact-phone p {
  font-size: 13px;
  opacity: 0.85;
}

.contact-phone a {
  display: block;
  margin: 8px 0 4px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.contact-phone span {
  font-size: 13px;
  opacity: 0.85;
}

.contact-steps {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}

.contact-steps b {
  font-family: var(--font-display);
  font-size: 14px;
  opacity: 0.8;
}

.contact-steps strong {
  display: block;
  margin-bottom: 4px;
}

.contact-steps p {
  font-size: 13px;
  opacity: 0.88;
  line-height: 1.5;
}

/* Full-page snap (desktop) */
@media (min-width: 901px) {
  html.has-page-snap body.page-edu-landing main > section {
    min-height: 100vh;
    scroll-snap-align: start;
    scroll-snap-stop: always;
  }

  html.is-page-snapping {
    scroll-behavior: auto;
  }
}

@media (min-width: 901px) and (prefers-reduced-motion: reduce) {
  html.has-page-snap body.page-edu-landing main > section {
    scroll-snap-align: none;
    scroll-snap-stop: normal;
  }
}

/* Footer */
.site-footer {
  padding: 28px 16px 32px;
  background: #f5f7fa;
  color: #8a9199;
  border-top: 1px solid #e8ecf0;
}

.footer-legal {
  text-align: center;
  font-size: 12px;
  line-height: 1.9;
}

.footer-legal a {
  color: inherit;
  text-decoration: none;
}

.footer-legal a:hover {
  color: #5a6570;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-legal-line {
  margin: 0;
}

.footer-legal-line + .footer-legal-line {
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 1180px) {
  .system-items--5 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .system-items--5 li {
    grid-column: span 2;
  }

  .system-items--5 li:nth-child(4) {
    grid-column: 2 / span 2;
  }

  .system-items--5 li:nth-child(5) {
    grid-column: 4 / span 2;
  }

  .system-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px 0;
    padding: 8px;
  }

  .system-steps li:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 1060px) {
  .menu-button {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto;
    padding: 20px 18px 28px;
    display: grid;
    gap: 0;
    color: var(--ink);
    background: #fff;
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.12);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav > a {
    padding: 14px 5px;
    border-bottom: 1px solid #ecebea;
  }

  .business-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
    padding: 24px 14px 36px;
  }

  .business-card:nth-child(1),
  .business-card:nth-child(3) {
    transform: perspective(800px) rotateY(18deg) scale(0.97);
  }

  .business-card:nth-child(2),
  .business-card:nth-child(4) {
    transform: perspective(800px) rotateY(-18deg) scale(0.97);
  }

  .business-card:nth-child(1):hover,
  .business-card:nth-child(3):hover {
    transform: perspective(800px) rotateY(18deg) translateY(-6px) scale(0.98);
  }

  .business-card:nth-child(2):hover,
  .business-card:nth-child(4):hover {
    transform: perspective(800px) rotateY(-18deg) translateY(-6px) scale(0.98);
  }

  .site-nav > a::after {
    display: none;
  }

  .site-nav .nav-cta {
    margin-top: 14px;
    text-align: center;
    border: 0;
  }

  .menu-button[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-button[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: 20px 12px;
  }

  .stat-divider {
    display: none;
  }

  .scenario-body.is-active {
    grid-template-columns: 1fr;
  }

  .scenario-stage {
    padding: 24px 52px 24px 20px;
  }

  .contact-row {
    grid-template-columns: 1fr;
  }

  .system-row {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 20px 16px;
  }

  .system-row-meta {
    flex-direction: row;
    justify-content: flex-start;
    gap: 10px;
    min-height: 0;
    width: fit-content;
    padding: 10px 14px;
    border-radius: 999px;
  }

  .system-row-meta b {
    font-size: 16px;
  }

  .system-row-meta h3 {
    font-size: 13px;
  }

  .system-items--5,
  .system-items--3 {
    grid-template-columns: 1fr 1fr;
  }

  .system-items--5 li,
  .system-items--5 li:nth-child(4),
  .system-items--5 li:nth-child(5) {
    grid-column: auto;
  }

  .system-items--5 li:last-child {
    grid-column: 1 / -1;
    max-width: calc(50% - 6px);
    justify-self: center;
    width: 100%;
  }

  .system-items--5 li {
    min-height: 84px;
  }

  .system-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .system-foot {
    grid-template-columns: 1fr;
  }

  .partner-marquee {
    gap: 14px;
  }

  .logos-track {
    gap: 12px;
  }

  .hub-node {
    width: 200px;
    padding: 14px 16px;
    border-radius: 16px;
  }

  .hub-node img {
    width: 34px;
    height: 34px;
  }

  .hub-node span {
    font-size: 14px;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .mobile-br {
    display: inline;
  }
}

@media (max-width: 760px) {
  :root {
    --header-h: 66px;
    --header-height: 66px;
  }

  .brand {
    min-width: 0;
  }

  .brand img {
    height: 44px;
  }

  .brand-name {
    font-size: 17px;
  }

  .business-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 12px 4px 24px;
  }

  .business-card:nth-child(1),
  .business-card:nth-child(2),
  .business-card:nth-child(3),
  .business-card:nth-child(4),
  .business-card:nth-child(1):hover,
  .business-card:nth-child(2):hover,
  .business-card:nth-child(3):hover,
  .business-card:nth-child(4):hover {
    transform: none;
  }

  .business-card:hover {
    transform: translateY(-6px);
  }

  .business-card::before {
    inset: -10px;
    transform: none;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: calc(var(--header-h) + 28px);
  }

  .hero-actions {
    width: 100%;
  }

  .btn-cta {
    width: 100%;
  }

  .system-items--5,
  .system-items--3 {
    grid-template-columns: 1fr 1fr;
  }

  .system-steps {
    grid-template-columns: 1fr 1fr;
  }

  .scenario-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .scenario-tab {
    flex: 0 0 auto;
    padding-inline: 16px;
  }

  .scenario-stage {
    padding: 20px 46px 20px 16px;
  }

  .scenario-next {
    right: 8px;
    width: 36px;
    height: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-content,
  .stats-bar,
  .scenario-body.is-active,
  .business-card:nth-child(1),
  .business-card:nth-child(2),
  .business-card:nth-child(3),
  .business-card:nth-child(4),
  .business-card:hover,
  .btn-cta:hover,
  .closing-cta:hover {
    animation: none;
    transform: none;
  }

  .logos-track {
    transform: none !important;
  }

  .stats-ray,
  .stat-item::before {
    animation: none;
    opacity: 0;
  }
}