:root {
  --bg: #0f1117;
  --bg-soft: #131723;
  --surface: rgba(24, 29, 42, 0.82);
  --surface-strong: rgba(29, 35, 50, 0.92);
  --surface-solid: #181d2a;
  --text: #edf2ff;
  --text-soft: #aab5c9;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.16);
  --accent-1: #33d6c1;
  --accent-2: #8c6cff;
  --accent-3: #ff7a59;
  --shadow: 0 30px 70px rgba(0, 0, 0, 0.34);
  --hero-glow-1: rgba(51, 214, 193, 0.16);
  --hero-glow-2: rgba(140, 108, 255, 0.18);
  --hero-glow-3: rgba(255, 122, 89, 0.1);
  --surface-fade: 0.26;
  --blur: 16px;
}

html[data-theme="light"] {
  --bg: #f6f3eb;
  --bg-soft: #efe8da;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --surface-solid: #ffffff;
  --text: #1a2030;
  --text-soft: #5e687b;
  --line: rgba(26, 32, 48, 0.09);
  --line-strong: rgba(26, 32, 48, 0.15);
  --accent-1: #0d9b8f;
  --accent-2: #6b54ff;
  --accent-3: #e66b4d;
  --shadow: 0 28px 55px rgba(37, 44, 61, 0.08);
  --hero-glow-1: rgba(13, 155, 143, 0.12);
  --hero-glow-2: rgba(107, 84, 255, 0.1);
  --hero-glow-3: rgba(230, 107, 77, 0.08);
  --surface-fade: 0.34;
  --blur: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, var(--hero-glow-1), transparent 22%),
    radial-gradient(circle at 95% 10%, var(--hero-glow-2), transparent 24%),
    radial-gradient(circle at 60% 100%, var(--hero-glow-3), transparent 18%),
    linear-gradient(180deg, var(--bg-soft), var(--bg));
  transition: background 0.35s ease, color 0.25s ease;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.container {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(var(--blur));
  background: color-mix(in srgb, var(--bg) 74%, transparent);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-role {
  font-size: 0.88rem;
  color: var(--text-soft);
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--text);
  border-radius: 999px;
  min-height: 46px;
  padding: 0 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent-1) 28%, var(--line));
}

.theme-icon {
  width: 1.15rem;
  text-align: center;
  font-size: 1rem;
  line-height: 1;
}

.hero-island {
  width: fit-content;
  max-width: 100%;
  min-height: 64px;
  padding: 0.5rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
  border: 1px solid var(--line-strong);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(16px);
}

.site-island {
  width: min(100%, 1080px);
  margin: 0 auto;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0.55rem;
}

.hero-island-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 0 0 auto;
}

.island-brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: max-content;
}

.hero-island-logo {
  width: 64px;
  height: 64px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  padding: 0.45rem;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent-1) 12%, transparent),
    color-mix(in srgb, var(--accent-2) 12%, transparent)
  );
  border: 1px solid var(--line);
  overflow: hidden;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.logo-mark svg {
  width: 100%;
  height: auto;
  display: block;
}

.hero-island-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.site-island .hero-island-nav {
  flex: 1 1 auto;
  justify-content: center;
}

.hero-island-link {
  min-height: 48px;
  padding: 0 1rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-soft);
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.hero-island-link:hover,
.hero-island-link:focus-visible {
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent-1) 18%, transparent),
    color-mix(in srgb, var(--accent-2) 20%, transparent),
    color-mix(in srgb, var(--accent-3) 14%, transparent)
  );
  color: var(--text);
  transform: translateY(-1px);
  outline: none;
}

.island-theme-toggle {
  flex: 0 0 auto;
  min-height: 48px;
  background: transparent;
  border: 1px solid var(--line);
  margin-left: 0.25rem;
}

.hero {
  padding: 4.75rem 0 2.5rem;
}

.hero-card {
  position: relative;
  overflow: visible;
  border-radius: 34px;
  padding: clamp(1.6rem, 3.4vw, 3rem);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--surface) 90%, transparent),
    color-mix(in srgb, var(--surface-solid) 94%, transparent)
  );
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  isolation: isolate;
}

.hero-card::before,
.hero-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
  filter: blur(24px);
  z-index: -1;
}

.hero-card::before {
  width: 320px;
  height: 320px;
  right: -80px;
  top: -80px;
  background: radial-gradient(circle, var(--hero-glow-2), transparent 68%);
}

.hero-card::after {
  width: 260px;
  height: 260px;
  left: -60px;
  bottom: -60px;
  background: radial-gradient(circle, var(--hero-glow-1), transparent 70%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  min-height: 36px;
  padding: 0 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-strong) 88%, transparent);
  color: var(--accent-1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h1 {
  margin: 1.2rem 0 1rem;
  width: 100%;
  max-width: none;
  font-size: clamp(2.7rem, 5.9vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
  font-weight: 760;
  text-wrap: balance;
  text-align: left;
}

.hero p {
  margin: 0;
  width: 100%;
  max-width: 76ch;
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.path-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.path-card {
  position: relative;
  overflow: hidden;
  min-height: 150px;
  border-radius: 24px;
  padding: 1.1rem 1.1rem 1.15rem;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  z-index: 1;
  transform-origin: center center;
}

.path-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.22s ease;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent-1) 22%, transparent),
    color-mix(in srgb, var(--accent-2) 26%, transparent) 58%,
    color-mix(in srgb, var(--accent-3) 18%, transparent)
  );
  pointer-events: none;
}

.path-card:hover,
.path-card:focus-visible {
  transform: translateY(-4px) scale(1.045);
  border-color: transparent;
  box-shadow:
    0 18px 34px rgba(0, 0, 0, 0.18),
    0 0 0 1px color-mix(in srgb, var(--accent-2) 24%, transparent);
  background: color-mix(in srgb, var(--surface-strong) 96%, transparent);
  z-index: 3;
}

.path-card:hover::before,
.path-card:focus-visible::before {
  opacity: 1;
}

.path-card-title {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  font-size: clamp(1.2rem, 2.2vw, 1.45rem);
  font-weight: 720;
  letter-spacing: -0.03em;
}

.path-desc {
  position: absolute;
  left: 1.1rem;
  right: 1.1rem;
  bottom: 1rem;
  z-index: 1;
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.68;
  color: var(--text-soft);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: none;
}

.path-card:hover .path-desc,
.path-card:focus-visible .path-desc {
  opacity: 1;
  transform: translateY(0);
}

.path-card:focus-visible {
  outline: none;
}

.scroll-sections {
  padding: 0 0 4rem;
}

.reveal-section {
  min-height: 76vh;
  display: flex;
  align-items: center;
  opacity: var(--surface-fade);
  transform: translateY(18px) scale(0.988);
  transition: opacity 0.18s linear, transform 0.18s linear;
  will-change: opacity, transform;
}

.section-card {
  width: 100%;
  border-radius: 30px;
  padding: clamp(1.5rem, 3vw, 2.4rem);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.section-label {
  margin: 0 0 0.85rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
}

.section-card h2 {
  margin: 0 0 0.95rem;
  width: 100%;
  max-width: none;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.section-card p {
  margin: 0;
  width: 100%;
  max-width: 74ch;
  color: var(--text-soft);
  line-height: 1.8;
  font-size: 1.03rem;
}

.principles {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.principle {
  border-radius: 20px;
  padding: 1rem;
  background: color-mix(in srgb, var(--surface-strong) 94%, transparent);
  border: 1px solid var(--line);
}

.principle h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.principle p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: none;
}

.quote-block {
  margin-top: 1.3rem;
  padding-left: 1rem;
  border-left: 2px solid color-mix(in srgb, var(--accent-1) 70%, transparent);
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.75;
  width: 100%;
  max-width: 64ch;
}

.site-footer {
  padding: 0 0 2.5rem;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

@media (max-width: 980px) {
  .path-grid,
  .principles {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.8rem;
  }

  .reveal-section {
    min-height: 68vh;
  }

  .header-inner {
    min-height: 96px;
  }

  .site-island {
    width: 100%;
    border-radius: 28px;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0.75rem;
  }

  .hero-island-logo-wrap {
    width: 100%;
    justify-content: center;
  }

  .site-island .hero-island-nav {
    justify-content: center;
    flex-wrap: wrap;
  }

  .island-theme-toggle {
    margin-left: 0;
    margin-top: 0.25rem;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 1rem, 1180px);
  }

  .header-inner {
    min-height: 76px;
  }

  .hero-card,
  .section-card {
    border-radius: 24px;
  }

  .hero-card {
    padding: 1.25rem;
  }

  .section-card {
    padding: 1.2rem;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 11.5vw, 3.8rem);
  }

  .hero p,
  .section-card p {
    font-size: 1rem;
  }

  .path-card {
    min-height: 140px;
  }

  .hero-island {
    border-radius: 24px;
  }

  .hero-island-logo {
    width: 56px;
    height: 56px;
  }

  .hero-island-link {
    min-height: 42px;
    padding: 0 0.85rem;
    font-size: 0.92rem;
  }

  .hero-island-logo-wrap {
    flex-direction: column;
    gap: 0.35rem;
  }

  .island-brand {
    align-items: center;
    text-align: center;
  }

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

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}