:root {
  --sky: #eaf6ff;
  --sky-deep: #cde8fb;
  --sea: #4f96cc;
  --sea-dark: #235878;
  --ink: #183445;
  --muted: #587181;
  --paper: #fffdfa;
  --gold: #e3a83c;
  --coral: #e97f76;
  --line: rgba(24, 52, 69, 0.16);
  --container: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

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

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

button {
  font: inherit;
  letter-spacing: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  color: white;
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--container));
  height: 76px;
  margin: 16px auto 0;
  padding: 0 20px;
  border: 1px solid transparent;
  transition: background-color 240ms ease, border-color 240ms ease, transform 240ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 253, 250, 0.94);
  border-color: var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 24px;
  font-weight: 700;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid rgba(35, 88, 120, 0.18);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
  font-weight: 600;
}

.site-nav a {
  position: relative;
  padding: 10px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  background: var(--sea);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .admin-entry {
  padding: 11px 16px;
  color: white;
  background: var(--ink);
  border-radius: 4px;
}

.site-nav .admin-entry::after {
  display: none;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 0;
  background: transparent;
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 88dvh;
  overflow: hidden;
  background: var(--sky);
}

.hero-copy {
  position: relative;
  z-index: 3;
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
  padding-top: 190px;
  padding-bottom: 130px;
}

.hero-season,
.section-heading > p,
.experience-intro > p,
.manifesto-copy > p {
  margin: 0 0 24px;
  color: var(--sea-dark);
  font-family: Consolas, monospace;
  font-size: 12px;
  font-weight: 700;
}

.hero h1 {
  margin: 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 92px;
  font-weight: 700;
  line-height: 1;
}

.hero-lead {
  max-width: 620px;
  margin: 28px 0 18px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 38px;
  font-weight: 700;
  line-height: 1.32;
}

.hero-description {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.hero-actions,
.manifesto-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 144px;
  height: 48px;
  padding: 0 22px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button:active {
  transform: translateY(1px);
}

.button-primary {
  color: white;
  background: var(--sea-dark);
}

.button-primary:hover {
  background: #173f58;
}

.text-link {
  font-size: 14px;
  font-weight: 700;
}

.text-link span {
  display: inline-block;
  margin-left: 8px;
  color: var(--sea);
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateY(4px);
}

.hero-art {
  position: absolute;
  z-index: 2;
  right: max(-120px, calc((100vw - var(--container)) / 2 - 170px));
  bottom: -250px;
  width: 850px;
  height: 850px;
  margin: 0;
  pointer-events: none;
}

.hero-art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 24px 26px rgba(35, 88, 120, 0.16));
}

.hero-lines {
  position: absolute;
  z-index: 1;
  right: -8%;
  bottom: -170px;
  width: 62%;
  height: 410px;
  transform: rotate(-6deg);
}

.hero-lines span {
  position: absolute;
  inset: auto 0;
  display: block;
  height: 210px;
  border: 2px solid rgba(79, 150, 204, 0.28);
  border-radius: 50%;
}

.hero-lines span:nth-child(2) {
  bottom: 55px;
  transform: scale(1.12);
}

.hero-lines span:nth-child(3) {
  bottom: 110px;
  transform: scale(1.25);
}

.hero-side-note {
  position: absolute;
  right: 28px;
  top: 150px;
  z-index: 3;
  margin: 0;
  color: rgba(35, 88, 120, 0.55);
  font-family: Consolas, monospace;
  font-size: 10px;
  writing-mode: vertical-rl;
}

.signal-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 110px;
  padding: 24px;
  color: white;
  background: var(--sea-dark);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 17px;
  font-weight: 700;
}

.signal-strip i {
  width: 4px;
  height: 4px;
  margin: 0 28px;
  background: var(--gold);
  transform: rotate(45deg);
}

.section {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
}

.journey {
  padding: 130px 0 150px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px 80px;
  align-items: end;
}

.section-heading > p {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.section-heading h2,
.experience-intro h2,
.manifesto-copy h2 {
  margin: 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 54px;
  line-height: 1.18;
}

.section-heading > span {
  max-width: 480px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.phase-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 72px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.phase-selector button {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 74px;
  padding: 0 22px;
  color: var(--muted);
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease;
}

.phase-selector button:last-child {
  border-right: 0;
}

.phase-selector button span {
  font-family: Consolas, monospace;
  font-size: 12px;
}

.phase-selector button[aria-selected="true"] {
  color: white;
  background: var(--sea);
}

.phase-stage {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  min-height: 500px;
  margin-top: 36px;
  background: #f2f9fd;
  border-radius: 6px;
  overflow: hidden;
}

.phase-copy {
  padding: 72px;
}

.phase-copy article[hidden] {
  display: none;
}

.phase-number,
.feature-index {
  color: var(--coral);
  font-family: Consolas, monospace;
  font-size: 12px;
  font-weight: 700;
}

.phase-copy h3 {
  max-width: 520px;
  margin: 28px 0 20px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 38px;
  line-height: 1.3;
}

.phase-copy article > p:not(.phase-number) {
  max-width: 550px;
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
}

.phase-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  font-weight: 700;
}

.phase-copy li::before {
  content: "·";
  margin-right: 7px;
  color: var(--gold);
}

.route-map {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  background: var(--sea-deep);
}

.route-coast {
  position: absolute;
  inset: 18% -28% -36% 20%;
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 48% 52% 46% 54%;
  transform: rotate(-18deg);
  box-shadow: 0 0 0 30px rgba(255, 255, 255, 0.14), 0 0 0 68px rgba(255, 255, 255, 0.08);
}

.route-point {
  position: absolute;
  z-index: 2;
  padding: 8px 11px;
  color: white;
  background: var(--sea-dark);
  border-radius: 3px;
  font-size: 12px;
  font-weight: 700;
}

.point-one { left: 15%; top: 24%; }
.point-two { right: 18%; top: 47%; }
.point-three { left: 33%; bottom: 18%; }

.route-star {
  position: absolute;
  right: 26%;
  top: 19%;
  color: var(--gold);
  font-size: 34px;
  animation: star-float 3.6s ease-in-out infinite;
}

@keyframes star-float {
  50% { transform: translateY(-12px) rotate(8deg); }
}

.experience {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 90px;
  padding: 80px 0 150px;
}

.experience-intro {
  position: sticky;
  top: 130px;
  align-self: start;
}

.experience-intro h2 {
  font-size: 52px;
}

.experience-grid {
  border-top: 1px solid var(--line);
}

.feature {
  position: relative;
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr) 240px;
  gap: 24px;
  align-items: center;
  min-height: 230px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.feature h3 {
  margin: 0 0 12px;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 28px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.ticket-visual,
.scene-visual,
.social-visual,
.care-visual {
  width: 240px;
  height: 150px;
  border-radius: 6px;
}

.ticket-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 26px;
  color: var(--ink);
  background: #f4d793;
  transform: rotate(3deg);
}

.ticket-visual span { font-size: 11px; }
.ticket-visual strong { margin-top: 18px; font-family: Consolas, monospace; font-size: 22px; }
.ticket-visual i { position: absolute; right: 18px; top: 18px; width: 34px; height: 34px; border: 7px dotted var(--sea-dark); }

.scene-visual {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  padding: 18px;
  background: var(--sky-deep);
}

.scene-visual span {
  border: 2px solid rgba(35, 88, 120, 0.5);
}

.scene-visual span:nth-child(2) { background: var(--sea); }
.scene-visual span:nth-child(3) { border-radius: 50%; background: var(--coral); }

.social-visual {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  color: white;
  background: var(--coral);
  transform: rotate(-2deg);
}

.social-visual span { font-family: "STKaiti", "KaiTi", serif; font-size: 17px; line-height: 1.5; }
.social-visual i { font-family: Consolas, monospace; font-size: 10px; font-style: normal; }

.care-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 26px;
  color: white;
  background: var(--sea-dark);
}

.care-visual b { font-family: "STKaiti", "KaiTi", serif; font-size: 21px; }
.care-visual span { margin-top: 8px; color: rgba(255,255,255,0.7); font-size: 11px; }

.manifesto {
  position: relative;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  min-height: 620px;
  padding: 110px 0 130px;
  color: white;
}

.manifesto::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  background: var(--ink);
  transform: translateX(-50%);
}

.manifesto-mark {
  align-self: center;
  color: transparent;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 300px;
  line-height: 1;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.25);
}

.manifesto-copy {
  align-self: center;
}

.manifesto-copy > p {
  color: #9fcff0;
}

.manifesto-copy h2 {
  font-size: 56px;
}

.manifesto-copy > span {
  display: block;
  max-width: 650px;
  margin-top: 28px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 15px;
  line-height: 2;
}

.button-dark {
  color: var(--ink);
  background: var(--gold);
}

.dark-link {
  color: white;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
  padding: 55px 0;
  color: var(--muted);
  font-size: 13px;
}

.site-footer > div {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-footer strong {
  color: var(--ink);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 24px;
}

.site-footer nav {
  display: flex;
  gap: 22px;
  align-items: start;
}

.site-footer a:hover {
  color: var(--sea-dark);
}

.site-footer small {
  grid-column: 1 / -1;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

@media (max-width: 1040px) {
  .hero-copy { padding-top: 170px; }
  .hero-art { right: -220px; width: 760px; height: 760px; bottom: -200px; opacity: 0.92; }
  .hero-description { max-width: 430px; }
  .experience { grid-template-columns: 1fr; gap: 54px; }
  .experience-intro { position: static; }
  .feature { grid-template-columns: 50px minmax(0, 1fr) 220px; }
  .manifesto { grid-template-columns: 0.55fr 1.45fr; }
  .manifesto-mark { font-size: 220px; }
}

@media (max-width: 760px) {
  .site-header {
    width: calc(100% - 24px);
    height: 64px;
    margin-top: 8px;
    padding: 0 14px;
  }

  .brand { font-size: 20px; }
  .brand img { width: 34px; height: 34px; }
  .menu-toggle { display: block; }

  .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: absolute;
    top: 70px;
    left: 0;
    right: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 2px;
    padding: 12px;
    background: var(--paper);
    border: 1px solid var(--line);
  }

  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 13px 12px; }
  .site-nav a::after { display: none; }

  .hero {
    min-height: 92dvh;
  }

  .hero-copy {
    width: calc(100% - 36px);
    padding-top: 120px;
    padding-bottom: 420px;
  }

  .hero-season { max-width: 220px; line-height: 1.5; }
  .hero h1 { font-size: 58px; }
  .hero-lead { margin-top: 20px; font-size: 28px; }
  .hero-description { font-size: 14px; line-height: 1.8; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 20px; margin-top: 26px; }
  .hero-art { right: -86px; bottom: -112px; width: 520px; height: 520px; opacity: 1; }
  .hero-lines { right: -30%; bottom: -160px; width: 110%; }
  .hero-side-note { display: none; }

  .signal-strip {
    justify-content: flex-start;
    min-height: 82px;
    overflow-x: auto;
    padding-inline: 20px;
    font-size: 14px;
    white-space: nowrap;
  }

  .signal-strip i { margin: 0 18px; }
  .section { width: calc(100% - 36px); }
  .journey { padding: 90px 0 100px; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; }
  .section-heading h2, .experience-intro h2, .manifesto-copy h2 { font-size: 38px; }
  .section-heading > span { font-size: 14px; }

  .phase-selector { margin-top: 48px; }
  .phase-selector button { flex-direction: column; justify-content: center; gap: 5px; min-height: 76px; padding: 8px; font-size: 13px; }
  .phase-stage { grid-template-columns: 1fr; min-height: auto; }
  .phase-copy { min-height: 430px; padding: 38px 28px; }
  .phase-copy h3 { font-size: 30px; }
  .route-map { min-height: 280px; }

  .experience { gap: 42px; padding: 60px 0 100px; }
  .feature { grid-template-columns: 38px 1fr; min-height: auto; padding: 34px 0; }
  .feature > div:last-child { grid-column: 1 / -1; justify-self: end; width: calc(100% - 38px); margin-top: 10px; }
  .ticket-visual, .scene-visual, .social-visual, .care-visual { height: 138px; }

  .manifesto { grid-template-columns: 1fr; min-height: 610px; padding: 90px 0 100px; }
  .manifesto-mark { position: absolute; right: -18px; top: 40px; z-index: -1; font-size: 190px; }
  .manifesto-copy > span { font-size: 14px; }
  .manifesto-actions { align-items: flex-start; flex-direction: column; }

  .site-footer { grid-template-columns: 1fr; width: calc(100% - 36px); }
  .site-footer nav { flex-wrap: wrap; }
  .site-footer small { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}