:root {
  --color-page: #f8f7f2;
  --color-surface: #fffdf8;
  --color-surface-strong: #ffffff;
  --color-text: #292d34;
  --color-muted: #666f7a;
  --color-blue: #123a63;
  --color-blue-soft: #e7eef5;
  --color-gold: #c99a32;
  --color-gold-soft: #f1d991;
  --color-line: #e5dfd2;
  --shadow-soft: 0 18px 50px rgba(18, 58, 99, 0.1);
  --max-width: 1120px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(241, 217, 145, 0.28), transparent 34rem),
    linear-gradient(180deg, #fbfaf6 0%, var(--color-page) 42%, #ffffff 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
}

.narrow {
  width: min(100% - 32px, 820px);
}

.centered {
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px max(16px, calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid rgba(229, 223, 210, 0.82);
  background: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-blue);
  font-weight: 800;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(201, 154, 50, 0.54);
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-gold-soft) 0 18%, var(--color-gold) 19% 33%, transparent 35%);
  box-shadow: 0 0 22px rgba(201, 154, 50, 0.28);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(18, 58, 99, 0.2);
  border-radius: 50%;
}

.brand-mark::after {
  inset: 10px;
  background: var(--color-gold);
  border: 0;
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  color: var(--color-blue);
  background: var(--color-surface-strong);
  cursor: pointer;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

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

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

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

.site-nav {
  position: fixed;
  inset: var(--header-height) 16px auto;
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-surface-strong);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.site-nav.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.site-nav a {
  padding: 11px 12px;
  border-radius: 6px;
  color: var(--color-blue);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--color-blue-soft);
  outline: none;
}

.section,
.section-band {
  padding: 76px 0;
}

.section-band {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(255, 253, 248, 0.86)),
    radial-gradient(circle at top right, rgba(201, 154, 50, 0.12), transparent 36rem);
}

.hero {
  min-height: calc(100svh - var(--header-height));
  display: grid;
  align-items: center;
  padding: 74px 0 88px;
  overflow: hidden;
}

.hero-grid,
.split-grid {
  display: grid;
  gap: 42px;
  align-items: center;
}

.hero-copy {
  max-width: 690px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-blue);
  line-height: 1.12;
}

h1 {
  font-size: clamp(3rem, 15vw, 6rem);
  letter-spacing: 0;
}

h2 {
  font-size: clamp(2rem, 9vw, 3.4rem);
  letter-spacing: 0;
}

h3 {
  font-size: 1.18rem;
}

.hero-motto {
  margin: 16px 0 0;
  color: var(--color-blue);
  font-size: clamp(1.2rem, 5vw, 1.75rem);
  font-weight: 700;
}

.hero-intro {
  max-width: 620px;
  margin: 20px 0 0;
  color: var(--color-muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button-primary {
  color: #ffffff;
  background: var(--color-blue);
  box-shadow: 0 12px 30px rgba(18, 58, 99, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #0d2d4d;
}

.button-secondary {
  color: var(--color-blue);
  border-color: rgba(18, 58, 99, 0.18);
  background: rgba(255, 255, 255, 0.78);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--color-blue-soft);
}

.button-disabled {
  margin-top: auto;
  color: var(--color-blue);
  border-color: rgba(18, 58, 99, 0.12);
  background: #f3f0e8;
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.74;
}

.button-disabled:hover,
.button-disabled:focus-visible {
  transform: none;
}

.hero-symbol {
  position: relative;
  width: min(80vw, 390px);
  aspect-ratio: 1;
  justify-self: center;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.96) 0 18%, rgba(241, 217, 145, 0.35) 19% 37%, transparent 38%),
    radial-gradient(circle, rgba(201, 154, 50, 0.1), transparent 66%);
  animation: breathe 6s ease-in-out infinite;
}

.solar-core {
  position: absolute;
  inset: 36%;
  border-radius: 50%;
  background: radial-gradient(circle, #fff7d7 0 22%, var(--color-gold-soft) 23% 46%, var(--color-gold) 47% 100%);
  box-shadow:
    0 0 34px rgba(201, 154, 50, 0.56),
    0 0 86px rgba(201, 154, 50, 0.24);
}

.solar-orbit {
  position: absolute;
  border: 1px solid rgba(201, 154, 50, 0.38);
  border-radius: 50%;
}

.orbit-one {
  inset: 18%;
}

.orbit-two {
  inset: 6%;
  border-color: rgba(18, 58, 99, 0.16);
}

.solar-node {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 22px rgba(201, 154, 50, 0.48);
}

.node-one {
  top: 18%;
  left: 65%;
}

.node-two {
  right: 14%;
  bottom: 31%;
}

.node-three {
  left: 18%;
  bottom: 24%;
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(0.985);
    filter: saturate(0.96);
  }
  50% {
    transform: scale(1.02);
    filter: saturate(1.08);
  }
}

.section-header {
  max-width: 820px;
  margin-bottom: 30px;
}

.section-header p:not(.eyebrow) {
  margin: 16px 0 0;
  color: var(--color-muted);
  font-size: 1.04rem;
}

.section-subtitle {
  color: var(--color-blue) !important;
  font-size: 1.18rem !important;
  font-weight: 800;
}

.text-panel,
.manifesto,
.quote-card,
.stage-note {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-soft);
}

.text-panel {
  padding: 24px;
}

.text-panel p,
.manifesto p,
.stage-note,
.quote-card p {
  margin: 0;
}

.text-panel p + p,
.manifesto p + p,
.quote-card p + p {
  margin-top: 16px;
}

.card-grid {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.principle-card,
.area-card,
.phase-card,
.document-card,
.institute-card,
.route-card {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-surface-strong);
  box-shadow: 0 12px 28px rgba(18, 58, 99, 0.07);
}

.principle-card {
  padding: 22px;
}

.principle-card p,
.area-card p,
.phase-card p,
.document-card p,
.institute-card p,
.route-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.quote-card {
  padding: 24px;
  color: var(--color-blue);
  font-size: 1.28rem;
  font-weight: 800;
}

.principles-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.principles-list span,
.node-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid rgba(18, 58, 99, 0.13);
  border-radius: 999px;
  color: var(--color-blue);
  background: rgba(255, 255, 255, 0.76);
  font-weight: 700;
}

.manifesto {
  padding: clamp(24px, 5vw, 42px);
  color: #30343b;
  font-size: 1.08rem;
}

.manifesto-close {
  color: var(--color-blue);
  font-size: clamp(1.5rem, 7vw, 2.45rem);
  font-weight: 900;
  line-height: 1.16;
}

.area-grid {
  grid-template-columns: 1fr;
}

.area-card {
  padding: 20px;
}

.area-card span,
.phase-card span {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--color-gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.phase-list {
  display: grid;
  gap: 14px;
}

.phase-card {
  padding: 22px;
}

.institute-highlight {
  margin: 28px 0 0;
  padding: 22px;
  border: 1px solid rgba(201, 154, 50, 0.36);
  border-radius: 8px;
  color: var(--color-blue);
  background:
    linear-gradient(135deg, rgba(255, 253, 248, 0.92), rgba(241, 217, 145, 0.22)),
    var(--color-surface-strong);
  box-shadow: var(--shadow-soft);
  font-size: clamp(1.35rem, 6vw, 2.2rem);
  font-weight: 900;
  line-height: 1.15;
}

.institute-grid,
.route-grid {
  grid-template-columns: 1fr;
}

.institute-card,
.route-card {
  padding: 22px;
}

.subsection-block {
  margin-top: 34px;
}

.subsection-block > p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--color-muted);
}

.limit-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.limit-list span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid rgba(18, 58, 99, 0.13);
  border-radius: 8px;
  color: var(--color-blue);
  background: rgba(255, 255, 255, 0.76);
  font-weight: 700;
}

.route-card h4 {
  margin: 0;
  color: var(--color-blue);
  font-size: 1.05rem;
}

.stage-note {
  margin: 24px 0 0;
  padding: 18px 20px;
  color: var(--color-blue);
  font-weight: 800;
}

.node-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.document-grid {
  align-items: stretch;
}

.document-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px;
}

.contact-line {
  padding-top: 8px;
  font-weight: 700;
}

.contact-line a {
  color: var(--color-blue);
  text-decoration-color: rgba(201, 154, 50, 0.7);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.institutional-note {
  margin-top: 18px;
  padding: 14px 16px;
  border-left: 3px solid rgba(201, 154, 50, 0.72);
  border-radius: 6px;
  color: var(--color-muted);
  background: rgba(255, 253, 248, 0.78);
  font-size: 0.94rem;
}

.participation-form {
  display: grid;
  gap: 15px;
  padding: 20px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-surface-strong);
  box-shadow: var(--shadow-soft);
}

.form-field {
  display: grid;
  gap: 7px;
}

.form-field label {
  color: var(--color-blue);
  font-size: 0.95rem;
  font-weight: 800;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid #d9d2c5;
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--color-text);
  background: #fffefa;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.form-field textarea {
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: rgba(18, 58, 99, 0.64);
  box-shadow: 0 0 0 4px rgba(18, 58, 99, 0.08);
  outline: none;
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #b63f3f;
}

.field-error {
  min-height: 18px;
  color: #9a3030;
  font-size: 0.84rem;
  font-weight: 700;
}

.full {
  width: 100%;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--color-blue);
  font-weight: 800;
}

.closing p:not(.eyebrow) {
  color: var(--color-muted);
  font-size: 1.08rem;
}

.signature {
  display: grid;
  gap: 4px;
  margin-top: 28px;
  color: var(--color-blue);
}

.signature strong {
  font-size: 1.25rem;
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--color-line);
  background: var(--color-blue);
  color: rgba(255, 255, 255, 0.86);
}

.site-footer strong {
  color: #ffffff;
}

.site-footer p {
  margin: 6px 0 0;
}

.site-footer a {
  color: #ffffff;
}

.footer-grid {
  display: grid;
  gap: 16px;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(18, 58, 99, 0.16);
  border-radius: 50%;
  color: var(--color-blue);
  background: var(--color-surface-strong);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 680px) {
  .container {
    width: min(100% - 48px, var(--max-width));
  }

  .narrow {
    width: min(100% - 48px, 820px);
  }

  .three-columns,
  .area-grid,
  .institute-grid,
  .route-grid,
  .document-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .participation-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 24px;
  }

  .form-field.full,
  .participation-form .full,
  .form-status {
    grid-column: 1 / -1;
  }

  .footer-grid {
    grid-template-columns: 1.3fr 0.7fr;
    align-items: center;
  }

  .footer-grid > p {
    margin: 0;
    text-align: right;
  }
}

@media (min-width: 1120px) {
  .menu-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .site-nav a {
    padding: 8px 8px;
    font-size: 0.82rem;
  }

  .hero-grid,
  .split-grid {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.7fr);
  }

  .section,
  .section-band {
    padding: 96px 0;
  }

  .hero {
    padding: 94px 0 112px;
  }

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

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

  .institute-grid,
  .document-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .area-card {
    min-height: 238px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}