@font-face {
  font-family: "LocalFallback";
  src: local("PingFang SC"), local("Microsoft YaHei");
}

:root {
  --sky: #bfe9ff;
  --sky-2: #eefbff;
  --ink: #385866;
  --deep: #233f4b;
  --blue: #8dc9eb;
  --blue-dark: #5d91ac;
  --cream: rgba(255, 255, 250, 0.74);
  --white: rgba(255, 255, 255, 0.72);
  --line: rgba(49, 80, 91, 0.42);
  --shadow: 0 28px 70px rgba(54, 93, 110, 0.22);
  --soft-shadow: 0 16px 44px rgba(58, 108, 128, 0.17);
  --radius: 34px;
  --accent: #5f8798;
  --accent-2: #f5dca8;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--deep);
  font-family: "LocalFallback", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(238,251,255,.72), rgba(189,231,251,.48) 38%, rgba(232,245,245,.72) 100%),
    #d8f4ff;
}

body.soft-motion .cloud,
body.soft-motion .paint-cursor,
body.soft-motion .hero-card::after,
body.soft-motion .note-dot {
  animation-play-state: paused !important;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 22% 32%, rgba(255,255,255,.72), transparent 13%),
    radial-gradient(circle at 73% 36%, rgba(255,255,255,.65), transparent 16%),
    linear-gradient(135deg, rgba(147,211,239,.55), rgba(255,255,255,.2) 55%, rgba(137,200,224,.42));
  overflow: hidden;
}

.page-bg::before,
.page-bg::after {
  content: "";
  position: absolute;
  inset: -20%;
  background-image:
    radial-gradient(ellipse at 12% 12%, rgba(255,255,255,.58) 0 4%, transparent 12%),
    radial-gradient(ellipse at 33% 17%, rgba(255,255,255,.68) 0 3.5%, transparent 10%),
    radial-gradient(ellipse at 61% 10%, rgba(255,255,255,.62) 0 5%, transparent 14%),
    radial-gradient(ellipse at 88% 20%, rgba(255,255,255,.52) 0 5%, transparent 14%),
    radial-gradient(ellipse at 78% 62%, rgba(255,255,255,.44) 0 4%, transparent 13%),
    radial-gradient(ellipse at 11% 70%, rgba(255,255,255,.44) 0 5%, transparent 14%);
  filter: blur(.5px);
  opacity: .82;
  transform: rotate(-4deg);
}

.page-bg::after {
  background:
    repeating-linear-gradient(0deg, rgba(34,82,99,.045) 0 1px, transparent 1px 8px),
    repeating-linear-gradient(90deg, rgba(34,82,99,.035) 0 1px, transparent 1px 9px);
  opacity: .35;
  mix-blend-mode: multiply;
}

.cloud {
  position: absolute;
  width: 360px;
  height: 128px;
  border-radius: 50%;
  background:
    radial-gradient(ellipse at 20% 60%, rgba(255,255,255,.9) 0 35%, transparent 36%),
    radial-gradient(ellipse at 45% 45%, rgba(255,255,255,.82) 0 42%, transparent 43%),
    radial-gradient(ellipse at 68% 65%, rgba(255,255,255,.76) 0 35%, transparent 36%);
  filter: blur(2px);
  opacity: .55;
  animation: drift 18s ease-in-out infinite;
}

.cloud-a { top: 5%; left: -8%; }
.cloud-b { top: 20%; right: -10%; transform: scale(1.25); animation-delay: -4s; }
.cloud-c { bottom: 32%; left: 16%; transform: scale(.9); animation-delay: -8s; }

@keyframes drift {
  0%, 100% { translate: 0 0; }
  50% { translate: 60px -18px; }
}

.mountain {
  position: absolute;
  left: 0;
  width: 100%;
  bottom: 0;
  pointer-events: none;
}

.mountain path {
  fill: rgba(65, 100, 112, .42);
  filter: blur(.3px);
}

.mountain-back {
  height: 38vh;
  opacity: .55;
}

.mountain-front {
  height: 31vh;
  opacity: .62;
}

.mountain-front path {
  fill: rgba(72, 112, 128, .55);
}

.paint-cursor {
  position: fixed;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.46), rgba(136,211,241,.16), transparent 68%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  z-index: 90;
  background: rgba(255,255,255,.35);
}

.scroll-progress span {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #7ec8e8, #ffffff, #f5dca8);
  box-shadow: 0 0 18px rgba(255,255,255,.85);
  transition: width .12s linear;
}

.floating-notes {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.note-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.72);
  box-shadow: 0 0 18px rgba(126,200,232,.65);
  animation: riseFloat var(--duration, 9s) linear infinite;
  opacity: .76;
}

@keyframes riseFloat {
  0% { transform: translate3d(0, 30px, 0) scale(.72); opacity: 0; }
  12% { opacity: .78; }
  100% { transform: translate3d(var(--shift, 40px), -110vh, 0) scale(1.16); opacity: 0; }
}

.topbar {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1060px, calc(100% - 34px));
  min-height: 64px;
  z-index: 60;
  display: grid;
  grid-template-columns: 74px 1fr 74px;
  align-items: center;
  gap: 20px;
  transition: top .28s ease, width .28s ease, transform .28s ease;
}

body.scrolled .topbar {
  top: 10px;
  width: min(980px, calc(100% - 26px));
  transform: translateX(-50%) scale(.985);
}

.brand {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1.4px solid var(--line);
  border-radius: 50%;
  background: rgba(255,255,255,.62);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(12px);
  color: var(--deep);
  font-weight: 900;
  letter-spacing: -.04em;
}

.nav-tabs {
  position: relative;
  height: 58px;
  padding: 5px;
  border: 2px solid rgba(41,70,81,.72);
  border-radius: 999px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255,255,255,.60);
  backdrop-filter: blur(18px);
  box-shadow: var(--soft-shadow);
  overflow: hidden;
}

.nav-tabs a {
  position: relative;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--deep);
  text-decoration: none;
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 700;
  letter-spacing: .02em;
  transition: background .3s ease, transform .3s ease, color .3s ease;
}

.nav-tabs a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 8px;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, #5f8798, transparent);
  transform: translateX(-50%);
  transition: width .25s ease;
}

.nav-tabs a:hover,
.nav-tabs a.active {
  background: rgba(255,255,255,.76);
  box-shadow: inset 0 0 18px rgba(123,180,204,.23);
  transform: translateY(-1px);
}

.nav-tabs a:hover::after,
.nav-tabs a.active::after {
  width: 42%;
}

.sound-btn {
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.62);
  color: var(--deep);
  font-size: 22px;
  cursor: pointer;
  box-shadow: var(--soft-shadow);
  border: 1.2px solid var(--line);
  backdrop-filter: blur(12px);
  transition: transform .25s ease;
}

.sound-btn:hover {
  transform: rotate(12deg) scale(1.04);
}

.section {
  width: min(1140px, calc(100% - 34px));
  margin: 0 auto;
  padding: 96px 0;
  position: relative;
}

.hero {
  min-height: 100vh;
  display: grid;
  place-items: center;
  align-content: center;
  padding-top: 128px;
}

.over-title {
  font-size: clamp(42px, 7.8vw, 92px);
  line-height: 1;
  margin: 14px 0 10px;
  color: rgba(43, 73, 85, .78);
  letter-spacing: .02em;
  font-weight: 800;
  text-align: center;
  text-shadow: 0 2px 0 rgba(255,255,255,.45);
}

.hero-subtitle {
  margin: 0 0 28px;
  text-align: center;
  color: rgba(39, 69, 81, .64);
  font-weight: 800;
  letter-spacing: .08em;
}


.glass {
  background: linear-gradient(155deg, rgba(255,255,255,.56), rgba(211,241,251,.42));
  border: 1.5px solid rgba(255,255,255,.64);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.hero-card {
  width: min(590px, 100%);
  min-height: 560px;
  padding: 52px 50px 44px;
  border-radius: var(--radius);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 180deg, transparent, rgba(255,255,255,.26), transparent, rgba(126,200,232,.18), transparent);
  animation: watercolorSpin 12s linear infinite;
  pointer-events: none;
}

.hero-card > * {
  position: relative;
  z-index: 1;
}

@keyframes watercolorSpin {
  to { transform: rotate(360deg); }
}


.hero-card::before,
.destination-stage::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: calc(var(--radius) - 10px);
  border: 1px solid rgba(255,255,255,.38);
  pointer-events: none;
}

.avatar-ring {
  width: 116px;
  height: 116px;
  padding: 7px;
  border-radius: 50%;
  margin: 0 auto 24px;
  background: rgba(255,255,255,.78);
  box-shadow: 0 18px 40px rgba(47,88,104,.18);
}

.avatar-ring img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 50%;
}

.small-title {
  margin: 0;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: .18em;
  font-size: 13px;
}

.hero-card h1 {
  margin: 14px 0 8px;
  font-size: clamp(42px, 7.2vw, 72px);
  line-height: 1;
  color: var(--deep);
  letter-spacing: .1em;
}

.typing-line {
  min-height: 36px;
  margin: 0;
  color: var(--accent);
  font-size: 25px;
  font-weight: 700;
}

.caret {
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.intro {
  width: min(460px, 100%);
  margin: 26px auto 0;
  color: #3e6270;
  font-weight: 600;
  line-height: 1.9;
}

.quick-icons {
  margin: 28px auto 26px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.quick-icons span {
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.58);
  color: var(--deep);
  border: 1px solid rgba(88,126,149,.16);
  font-size: 13px;
  font-weight: 800;
}

.primary-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  height: 52px;
  padding: 0 28px;
  border-radius: 999px;
  background: #274551;
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  box-shadow: 0 16px 28px rgba(39, 69, 81, .2);
  transition: transform .28s ease, box-shadow .28s ease;
}

.primary-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 40px rgba(39, 69, 81, .28);
}

.tiny-note {
  margin: 22px 0 0;
  color: rgba(43, 73, 85, .62);
  font-size: 13px;
  font-style: italic;
}

.section-head {
  text-align: center;
  margin: 0 auto 34px;
  width: min(820px, 100%);
}

.label {
  margin: 0 0 10px;
  color: var(--accent);
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: 13px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(34px, 5.8vw, 68px);
  line-height: 1.05;
  letter-spacing: .02em;
  color: rgba(43, 73, 85, .84);
}

.section-head p {
  margin: 18px auto 0;
  color: #416575;
  font-size: 17px;
  line-height: 1.9;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-card,
.map-card,
.proof-card {
  border-radius: 28px;
  background: rgba(255,255,255,.56);
  border: 1.5px solid rgba(255,255,255,.66);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(18px);
  transition: transform .32s ease, box-shadow .32s ease;
}

.stat-card:hover,
.map-card:hover,
.proof-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 26px 70px rgba(54, 93, 110, 0.25);
}

.stat-card {
  min-height: 230px;
  padding: 28px;
  text-align: center;
}

.stat-num {
  display: block;
  font-size: 48px;
  color: #417590;
  font-weight: 900;
  line-height: 1;
}

.stat-card h3 {
  margin: 18px 0 10px;
  font-size: 22px;
}

.stat-card p {
  margin: 0;
  color: #426574;
  line-height: 1.8;
}

.destination-stage {
  min-height: 560px;
  border-radius: 38px;
  position: relative;
  overflow: hidden;
  padding: 42px 84px;
  display: grid;
  place-items: center;
}

.destination-card {
  position: absolute;
  inset: 42px 84px;
  display: grid;
  grid-template-columns: 1.04fr .86fr;
  gap: 36px;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateX(40px) scale(.98);
  transition: opacity .48s ease, transform .48s ease;
}

.destination-card.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0) scale(1);
}

.destination-image {
  height: 430px;
  border-radius: 28px;
  overflow: hidden;
  background: rgba(255,255,255,.55);
  border: 8px solid rgba(255,255,255,.78);
  box-shadow: 0 24px 54px rgba(40, 80, 100, .22);
}

.destination-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: zoom-in;
}

.destination-copy {
  padding: 22px 0;
}

.destination-copy span {
  color: #5e8ca1;
  letter-spacing: .16em;
  font-size: 13px;
  font-weight: 900;
}

.destination-copy h3 {
  margin: 12px 0 18px;
  color: var(--deep);
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1;
}

.destination-copy p {
  color: #3d606f;
  font-size: 18px;
  line-height: 1.95;
  font-weight: 600;
}

.round-btn {
  position: absolute;
  z-index: 4;
  top: 50%;
  transform: translateY(-50%);
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1.5px solid rgba(45,76,88,.32);
  background: rgba(255,255,255,.72);
  color: var(--deep);
  cursor: pointer;
  font-size: 32px;
  box-shadow: var(--soft-shadow);
  transition: transform .25s ease, background .25s ease;
}

.round-btn:hover {
  transform: translateY(-50%) scale(1.06);
  background: #fff;
}

.round-btn.prev { left: 24px; }
.round-btn.next { right: 24px; }

.carousel-dock {
  width: min(820px, 100%);
  margin: -38px auto 0;
  position: relative;
  z-index: 5;
  min-height: 104px;
  border-radius: 999px;
  padding: 16px 22px;
  display: flex;
  justify-content: center;
  gap: 14px;
}

.dock-item {
  width: 96px;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--deep);
  display: grid;
  gap: 8px;
  justify-items: center;
  font-weight: 800;
  transition: transform .25s ease;
}

.dock-item:hover,
.dock-item.active {
  transform: translateY(-8px);
}

.dock-item img {
  width: 72px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
  border: 3px solid rgba(255,255,255,.78);
  box-shadow: 0 10px 22px rgba(58, 108, 128, .18);
}

.dock-item.active img {
  outline: 3px solid rgba(65,117,144,.42);
}

.dock-item span {
  font-size: 12px;
}

.timeline-map {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.map-card {
  padding: 28px;
  min-height: 260px;
  position: relative;
  overflow: hidden;
}

.map-card::before {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -42px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: rgba(144,207,232,.33);
}

.map-card span {
  color: #5c8da3;
  font-weight: 900;
  letter-spacing: .13em;
  font-size: 12px;
}

.map-card h3 {
  margin: 12px 0 12px;
  font-size: 26px;
}

.map-card p {
  margin: 0;
  color: #456b79;
  line-height: 1.9;
}

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

.proof-card {
  margin: 0;
  padding: 12px;
  overflow: hidden;
}

.proof-card img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
  border-radius: 20px;
  cursor: zoom-in;
  transition: transform .35s ease;
}

.proof-card:hover img {
  transform: scale(1.035);
}

.proof-card figcaption {
  padding: 12px 8px 4px;
  color: #3d6372;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
}

.footer {
  width: min(1140px, calc(100% - 34px));
  margin: 0 auto;
  padding: 42px 0 64px;
  color: rgba(43,73,85,.72);
  text-align: center;
  font-weight: 700;
}

.footer p {
  margin: 6px 0;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s ease, transform .8s ease;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 36px;
  background: rgba(25, 43, 52, .72);
  backdrop-filter: blur(16px);
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: min(92vw, 1180px);
  max-height: 84vh;
  object-fit: contain;
  border-radius: 18px;
  box-shadow: 0 28px 90px rgba(0,0,0,.35);
  background: #fff;
}

.lightbox p {
  position: fixed;
  bottom: 22px;
  color: #fff;
  font-weight: 800;
}

.lightbox-close {
  position: fixed;
  right: 24px;
  top: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0;
  background: rgba(255,255,255,.86);
  color: var(--deep);
  font-size: 28px;
  cursor: pointer;
}

.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.72);
  color: var(--deep);
  box-shadow: var(--soft-shadow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
}

.to-top.show {
  opacity: 1;
  pointer-events: auto;
}

.to-top:hover {
  transform: translateY(-4px);
}

@media (max-width: 940px) {
  .topbar {
    grid-template-columns: 50px 1fr 50px;
    width: calc(100% - 20px);
    top: 10px;
    gap: 8px;
  }

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

  .nav-tabs a {
    font-size: 12px;
  }

  .brand,
  .sound-btn {
    width: 44px;
    height: 44px;
    font-size: 13px;
  }

  .hero-card {
    padding: 42px 24px 34px;
  }

  .stat-grid,
  .timeline-map,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .destination-stage {
    min-height: 760px;
    padding: 34px 24px 84px;
  }

  .destination-card {
    inset: 34px 24px 84px;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .destination-image {
    height: 430px;
  }

  .destination-copy p {
    font-size: 16px;
  }

  .round-btn {
    top: auto;
    bottom: 18px;
    transform: none;
  }

  .round-btn:hover {
    transform: scale(1.06);
  }

  .round-btn.prev { left: calc(50% - 68px); }
  .round-btn.next { right: calc(50% - 68px); }

  .carousel-dock {
    border-radius: 26px;
    flex-wrap: wrap;
    margin-top: 18px;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 72px 0;
  }

  .over-title {
    font-size: 44px;
  }

  .hero-card h1 {
    letter-spacing: .03em;
  }

  .destination-image {
    height: 330px;
  }

  .proof-card img {
    height: 260px;
  }
}