:root {
  --sea: #88d7d1;
  --sea-deep: #1f8f9a;
  --sky: #d9f5ff;
  --mint: #c8f1dc;
  --peach: #ffd1bd;
  --coral: #ff8f88;
  --lemon: #ffe69a;
  --lavender: #d8d2ff;
  --ink: #243345;
  --muted: #66758a;
  --paper: #fffaf2;
  --shell: #fffdf8;
  --line: rgba(36, 51, 69, .12);
  --shadow-soft: 12px 18px 36px rgba(73, 126, 146, .16), -10px -10px 24px rgba(255, 255, 255, .72);
  --shadow-pressed: inset 7px 7px 15px rgba(90, 133, 145, .12), inset -7px -7px 15px rgba(255, 255, 255, .78);
  --radius: 8px;
  --container: min(1160px, calc(100% - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.68;
  background:
    linear-gradient(180deg, rgba(217, 245, 255, .94), rgba(255, 250, 242, .96) 34%, rgba(240, 252, 244, .96) 100%),
    radial-gradient(circle at 15% 8%, rgba(255, 209, 189, .55), transparent 34%),
    radial-gradient(circle at 84% 20%, rgba(200, 241, 220, .7), transparent 28%);
  overflow-x: hidden;
}

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

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

p {
  margin: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  color: #1f8f9a;
  font-size: clamp(2rem, 4.2vw, 4.4rem);
  font-weight: 900;
  line-height: 1.04;
}

h2 {
  color: #1f8f9a;
  font-size: clamp(1.55rem, 2.8vw, 2.55rem);
}

.hero h1 {
  color: #fff8dc;
}

h3 {
  font-size: clamp(1.18rem, 2vw, 1.45rem);
}

.sr-only,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  z-index: 1000;
  top: 12px;
  left: 12px;
  width: auto;
  height: auto;
  margin: 0;
  clip: auto;
  padding: 10px 14px;
  color: #fff;
  background: var(--sea-deep);
  border-radius: var(--radius);
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 50%;
  width: var(--container);
  min-height: 66px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, .68);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, .78);
  box-shadow: 0 12px 36px rgba(46, 88, 112, .14);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  background: rgba(255, 253, 248, .93);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 900;
  color: var(--sea-deep);
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  box-shadow: var(--shadow-pressed);
}

.brand span {
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  font-size: .9rem;
  font-weight: 700;
}

.site-nav a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius);
  padding: 7px 10px;
  color: #405064;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(136, 215, 209, .23);
  color: var(--sea-deep);
  outline: none;
}

.site-nav .nav-cta {
  color: #fff;
  background: linear-gradient(135deg, var(--sea-deep), #54b9bb);
  box-shadow: 0 8px 20px rgba(31, 143, 154, .2);
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  color: #fff;
  background: linear-gradient(135deg, #197d86, #43aeb1);
}

.nav-toggle {
  display: none;
  min-width: 60px;
  height: 38px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--radius);
  color: var(--sea-deep);
  font-weight: 900;
  background: var(--shell);
  box-shadow: var(--shadow-pressed);
}

.section {
  width: var(--container);
  margin: 0 auto;
  padding: 76px 0;
}

.section-band {
  position: relative;
}

.section-band::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0 calc((100vw - 100%) / -2);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .44), rgba(136, 215, 209, .2)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .28) 0 1px, transparent 1px 54px);
}

.hero {
  width: 100%;
  min-height: auto;
  display: grid;
  align-items: start;
  padding: 118px 0 52px;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(24, 75, 92, .72), rgba(24, 75, 92, .24) 42%, rgba(255, 250, 242, .12)),
    linear-gradient(0deg, rgba(255, 250, 242, .94), rgba(255, 250, 242, .08) 44%, rgba(255, 250, 242, .02));
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shell {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 32px;
  align-items: center;
  transform: none;
}

.hero-copy {
  color: #fff;
  text-shadow: 0 2px 18px rgba(19, 52, 73, .34);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  color: var(--sea-deep);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--lemon);
}

.eyebrow::before {
  content: "";
  width: 32px;
  height: 3px;
  border-radius: 999px;
  background: currentColor;
}

.hero-subtitle {
  max-width: 720px;
  margin-top: 8px;
  color: rgba(255, 255, 255, .95);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-weight: 900;
  line-height: 1.2;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #ff8f88, #ffb36d);
  box-shadow: 0 14px 28px rgba(255, 143, 136, .28);
}

.button-soft {
  color: var(--sea-deep);
  background: rgba(255, 253, 248, .9);
  box-shadow: 0 14px 28px rgba(28, 77, 96, .13);
}

.hero-card,
.card-soft,
.info-card,
.character-card,
.route-panel,
.faq-list details {
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, .76);
  box-shadow: var(--shadow-soft);
}

.hero-card {
  overflow: hidden;
  color: var(--ink);
  backdrop-filter: blur(14px);
}

.hero-card img {
  width: 100%;
  aspect-ratio: 460 / 215;
  object-fit: cover;
}

.hero-card dl {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 18px;
}

.hero-card div {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 12px;
}

.hero-card dt {
  color: var(--sea-deep);
  font-weight: 900;
}

.hero-card dd {
  margin: 0;
  color: #506073;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 28px;
}

.section-heading > p:not(.eyebrow) {
  margin-top: 12px;
  color: var(--muted);
  font-size: 1rem;
}

.split-heading {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(280px, .7fr);
  gap: 34px;
  align-items: end;
}

.magazine-grid {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(340px, 1.12fr);
  gap: 34px;
  align-items: center;
}

.intro-copy {
  display: grid;
  gap: 14px;
  padding: 24px;
  border-left: 5px solid var(--coral);
  background: linear-gradient(180deg, rgba(255, 255, 255, .52), rgba(255, 255, 255, .18));
}

.intro-copy p {
  color: #526176;
}

.feature-image,
.wide-shot,
.download-feature {
  overflow: hidden;
}

.feature-image img,
.wide-shot img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

figcaption {
  margin: 0;
  padding: 14px 16px;
  color: #5a697c;
  font-size: .94rem;
  background: rgba(255, 253, 248, .72);
}

.character-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.character-card,
.info-card,
.route-panel {
  padding: 20px;
}

.character-card {
  position: relative;
  overflow: hidden;
}

.character-card::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -34px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 209, 189, .52);
}

.character-card-accent::after {
  background: rgba(216, 210, 255, .62);
}

.route-label {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--sea-deep);
  background: rgba(136, 215, 209, .2);
  font-size: .76rem;
  font-weight: 900;
}

.character-meta {
  margin: 10px 0 12px;
  color: var(--muted);
  font-size: .9rem;
}

.tag-list {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.tag-list li {
  padding: 6px 9px;
  border-radius: 999px;
  color: #365062;
  background: rgba(255, 230, 154, .54);
  font-size: .84rem;
  font-weight: 800;
}

.wide-shot {
  margin: 28px 0 0;
}

.features-section {
  width: var(--container);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.info-card {
  min-height: 196px;
  background: rgba(255, 253, 248, .82);
}

.info-card h3 {
  color: var(--sea-deep);
}

.info-card p {
  margin-top: 12px;
  color: #56667a;
}

.gallery-strip {
  display: grid;
  grid-template-columns: 1fr 1.35fr .7fr;
  gap: 16px;
  margin: 26px 0 0;
}

.gallery-strip figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 12px 24px rgba(42, 98, 121, .13);
}

.gallery-strip img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.guide-layout {
  display: grid;
  grid-template-columns: .95fr .85fr;
  gap: 18px;
}

.route-panel-light {
  background: rgba(232, 248, 246, .7);
}

.route-panel-wide {
  grid-column: 1 / -1;
}

.number-list,
.check-list {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding-left: 1.2rem;
  color: #536277;
}

.compact {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding-left: 0;
  list-style-position: inside;
}

.download-feature {
  display: grid;
  grid-template-columns: 320px 1fr;
  align-items: center;
  margin: 26px 0 0;
  background: linear-gradient(135deg, rgba(255, 250, 242, .88), rgba(216, 210, 255, .38));
}

.download-feature img {
  width: 100%;
  height: 100%;
  min-height: 190px;
  object-fit: cover;
}

.download-feature figcaption {
  display: grid;
  gap: 10px;
  align-items: start;
  padding: 20px;
  background: transparent;
}

.download-section {
  text-align: center;
}

.download-section .section-heading {
  margin-left: auto;
  margin-right: auto;
}

.download-feature .button {
  justify-self: start;
  margin-top: 4px;
}

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

.timeline li {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, .62);
}

.timeline time {
  color: var(--sea-deep);
  font-weight: 900;
}

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

.faq-list details {
  padding: 0;
  overflow: hidden;
}

.faq-list summary {
  cursor: pointer;
  padding: 15px 18px;
  color: var(--ink);
  font-weight: 900;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--coral);
  font-size: 1.25rem;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list details p {
  padding: 0 18px 16px;
  color: #56667a;
}

.site-footer {
  padding: 46px 0;
  color: #4f6074;
  background: rgba(255, 253, 248, .72);
  border-top: 1px solid rgba(36, 51, 69, .08);
}

.not-found {
  min-height: 100svh;
  display: grid;
  align-content: center;
}

.not-found h1 {
  color: var(--sea-deep);
  text-shadow: none;
}

.footer-inner {
  width: var(--container);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  margin: 0 auto;
}

.footer-title {
  margin-bottom: 8px;
  color: var(--ink);
  font-weight: 900;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
  justify-content: end;
}

.footer-links a {
  color: var(--sea-deep);
  font-weight: 800;
}

@media (max-width: 980px) {
  :root {
    --container: min(100% - 28px, 760px);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: min(320px, 100%);
    display: grid;
    justify-content: stretch;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, .76);
    border-radius: var(--radius);
    background: rgba(255, 253, 248, .96);
    box-shadow: 0 16px 36px rgba(46, 88, 112, .16);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }

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

  .site-nav a {
    width: 100%;
  }

  .hero {
    min-height: auto;
    padding-top: 104px;
  }

  .hero-shell {
    transform: none;
  }

  .hero-shell,
  .split-heading,
  .magazine-grid,
  .guide-layout,
  .download-feature,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero-card {
    max-width: 430px;
  }

  .character-layout,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .compact {
    grid-template-columns: 1fr;
    padding-left: 1.2rem;
    list-style-position: outside;
  }

  .gallery-strip {
    grid-template-columns: 1fr;
  }

  .gallery-strip img {
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .footer-links {
    justify-content: start;
  }
}

@media (max-width: 640px) {
  :root {
    --container: calc(100% - 24px);
  }

  body {
    font-size: 14px;
    line-height: 1.65;
  }

  .site-header {
    top: 8px;
    min-height: 58px;
  }

  .brand span {
    max-width: 7em;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .section {
    padding: 52px 0;
  }

  .hero {
    padding-bottom: 28px;
  }

  .hero-shell {
    transform: none;
  }

  .hero-media::after {
    background:
      linear-gradient(90deg, rgba(24, 75, 92, .72), rgba(24, 75, 92, .22)),
      linear-gradient(0deg, rgba(255, 250, 242, .96), rgba(255, 250, 242, .24) 58%, rgba(255, 250, 242, .04));
  }

  .hero-media img {
    object-position: 60% center;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-card {
    max-width: none;
  }

  .character-layout,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .intro-copy,
  .character-card,
  .info-card,
  .route-panel {
    padding: 17px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .download-feature img {
    min-height: auto;
    aspect-ratio: 460 / 215;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}