:root {
  --ink: #17201b;
  --muted: #5f6964;
  --paper: #fbfaf6;
  --surface: #ffffff;
  --mist: #dbe8e1;
  --olive: #49634f;
  --pacific: #1e6674;
  --coral: #bf5b45;
  --gold: #d8a649;
  --line: #d9ded7;
  --shadow: 0 18px 50px rgba(23, 32, 27, 0.14);
  --radius: 8px;
  --display: "Noto Serif SC", "Songti SC", "STSong", serif;
  --body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
}

body.no-scroll {
  overflow: hidden;
}

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

a {
  color: inherit;
}

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

button {
  font: inherit;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 50;
  transform: translateY(-140%);
  border-radius: var(--radius);
  background: var(--ink);
  color: white;
  padding: 0.65rem 0.9rem;
  transition: transform 180ms ease;
}

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

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  grid-template-columns: minmax(1rem, 1fr) minmax(0, 1120px) minmax(1rem, 1fr);
  align-items: end;
  overflow: hidden;
  color: white;
  isolation: isolate;
}

.hero__image,
.hero__shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__image {
  object-fit: cover;
  object-position: center 38%;
  transform: scale(1.02);
}

.hero__shade {
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(15, 29, 25, 0.85), rgba(15, 29, 25, 0.5) 46%, rgba(15, 29, 25, 0.18)),
    linear-gradient(0deg, rgba(15, 29, 25, 0.8), rgba(15, 29, 25, 0) 42%);
}

.topbar {
  position: absolute;
  top: 1rem;
  right: max(1rem, calc((100vw - 1120px) / 2));
  z-index: 3;
  display: flex;
  gap: 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  background: rgba(23, 32, 27, 0.45);
  padding: 0.35rem;
  backdrop-filter: blur(16px);
}

.topbar a {
  border-radius: 6px;
  color: white;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  padding: 0.55rem 0.75rem;
}

.topbar a:hover,
.topbar a:focus-visible {
  background: rgba(255, 255, 255, 0.16);
  outline: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  grid-column: 2;
  width: min(690px, 100%);
  padding: 7rem 0 9rem;
  animation: rise-in 700ms ease both;
}

.eyebrow {
  margin: 0 0 0.55rem;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffd27c;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  line-height: 1.02;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  font-size: clamp(3.6rem, 10vw, 7.2rem);
}

h2 {
  font-size: clamp(2.1rem, 5vw, 4.2rem);
}

h3 {
  font-size: 1.35rem;
}

.hero__content p:not(.eyebrow) {
  max-width: 590px;
  margin: 1.25rem 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.95rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  text-decoration: none;
  padding: 0.78rem 1rem;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button svg {
  width: 1.1rem;
  height: 1.1rem;
}

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

.button--primary {
  background: #f5c767;
  color: #1d241f;
}

.button--ghost {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.12);
  color: white;
  backdrop-filter: blur(12px);
}

.hero__panel {
  position: absolute;
  right: max(1rem, calc((100vw - 1120px) / 2));
  bottom: 1.25rem;
  z-index: 2;
  width: min(640px, calc(100vw - 2rem));
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(20, 31, 27, 0.7);
  padding: 0.6rem;
  backdrop-filter: blur(18px);
}

.hero__panel div {
  min-width: 0;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.8rem;
}

.hero__panel span,
.day-stats span,
.overview span,
.stop__meta,
.pin-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero__panel span {
  color: rgba(255, 255, 255, 0.64);
}

.hero__panel strong {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.98rem;
  line-height: 1.22;
}

main {
  overflow: hidden;
}

.overview,
.strategy,
.itinerary,
.quick-list {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.overview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.overview article,
.strategy-grid article,
.day-summary,
.timeline-item,
.pin-grid a {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 26px rgba(23, 32, 27, 0.06);
}

.overview article {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.85rem;
  padding: 1rem;
}

.overview svg {
  width: 1.35rem;
  height: 1.35rem;
  color: var(--pacific);
}

.overview span {
  margin-bottom: 0.15rem;
}

.overview strong {
  display: block;
  font-size: 1rem;
  line-height: 1.25;
}

.strategy,
.itinerary,
.quick-list {
  padding: clamp(3.8rem, 8vw, 6.5rem) 0 0;
}

.section-copy {
  max-width: 720px;
}

.section-copy h2 {
  color: var(--ink);
}

.strategy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.strategy-grid article {
  padding: 1.2rem;
  background:
    linear-gradient(180deg, rgba(219, 232, 225, 0.48), rgba(255, 255, 255, 0) 48%),
    var(--surface);
}

.strategy-grid p,
.day-summary p,
.timeline-item p {
  color: var(--muted);
}

.itinerary__header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.45rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  min-height: 2.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: white;
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
  padding: 0.45rem 0.8rem;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.chip svg {
  width: 1rem;
  height: 1rem;
}

.chip:hover,
.chip:focus-visible,
.chip.is-active {
  border-color: var(--olive);
  background: var(--olive);
  color: white;
  outline: none;
}

.day-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.day-tab {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
  cursor: pointer;
  padding: 0.95rem 1rem;
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.day-tab span {
  display: block;
  color: var(--coral);
  font-size: 0.82rem;
  font-weight: 800;
}

.day-tab strong {
  display: block;
  margin-top: 0.15rem;
  font-family: var(--display);
  font-size: 1.16rem;
  line-height: 1.14;
}

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

.day-tab.is-active {
  border-color: var(--pacific);
  background: #e7f0ef;
}

.day-layout {
  display: grid;
  grid-template-columns: minmax(260px, 330px) 1fr;
  gap: 1.2rem;
  align-items: start;
  margin-top: 1.2rem;
}

.day-layout:focus {
  outline: none;
}

.day-summary {
  position: sticky;
  top: 1rem;
  overflow: hidden;
}

.day-summary img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.day-summary > div {
  padding: 1rem;
}

.day-summary p {
  margin: 0.6rem 0 0;
}

.day-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  border-top: 1px solid var(--line);
  background: #f6f8f4;
}

.day-stats div {
  border-radius: 6px;
  background: white;
  padding: 0.7rem;
}

.day-stats strong {
  display: block;
  margin-top: 0.05rem;
}

.timeline {
  position: relative;
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0 0 0 1rem;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.33rem;
  top: 0.9rem;
  bottom: 0.9rem;
  width: 2px;
  background: linear-gradient(var(--pacific), var(--gold), var(--coral));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(96px, 0.22fr) 1fr auto;
  gap: 0.75rem;
  align-items: start;
  padding: 1rem;
  animation: item-in 280ms ease both;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -0.91rem;
  top: 1.3rem;
  width: 0.66rem;
  height: 0.66rem;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 2px var(--coral);
}

.timeline-item.is-hidden {
  display: none;
}

.timeline-item time {
  color: var(--pacific);
  font-weight: 900;
  line-height: 1.18;
}

.stop__body {
  min-width: 0;
}

.stop__body h3 {
  font-size: 1.22rem;
}

.stop__body p {
  margin: 0.35rem 0 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.65rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: #edf4f1;
  color: #294b44;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
}

.stop-actions {
  display: flex;
  gap: 0.4rem;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.45rem;
  height: 2.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: background 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.icon-button svg {
  width: 1.08rem;
  height: 1.08rem;
}

.icon-button:hover,
.icon-button:focus-visible {
  border-color: var(--pacific);
  background: #e8f3f4;
  transform: translateY(-2px);
  outline: none;
}

.details {
  grid-column: 2 / -1;
  display: none;
  border-top: 1px solid var(--line);
  margin-top: -0.2rem;
  padding-top: 0.85rem;
}

.timeline-item.is-open .details {
  display: block;
}

.details dl {
  display: grid;
  grid-template-columns: minmax(90px, auto) 1fr;
  gap: 0.35rem 0.8rem;
  margin: 0;
}

.details dt {
  color: var(--muted);
  font-weight: 900;
}

.details dd {
  margin: 0;
}

.pin-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.pin-grid a {
  display: flex;
  min-height: 8.4rem;
  flex-direction: column;
  justify-content: space-between;
  color: inherit;
  padding: 1rem;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.pin-grid a:hover,
.pin-grid a:focus-visible {
  border-color: var(--pacific);
  transform: translateY(-3px);
  outline: none;
}

.pin-grid strong {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--display);
  font-size: 1.2rem;
  line-height: 1.08;
}

.pin-grid small {
  color: var(--muted);
  font-weight: 800;
}

footer {
  width: min(1120px, calc(100% - 2rem));
  margin: 5rem auto 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 1.4rem 0 2rem;
  font-size: 0.92rem;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes item-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 900px) {
  .hero {
    min-height: 86svh;
  }

  .hero__content {
    padding: 7rem 0 12rem;
  }

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

  .overview,
  .strategy-grid,
  .pin-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .itinerary__header,
  .day-layout {
    grid-template-columns: 1fr;
  }

  .itinerary__header {
    display: grid;
  }

  .filters {
    justify-content: flex-start;
  }

  .day-summary {
    position: static;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .hero {
    min-height: auto;
  }

  .hero__shade {
    background:
      linear-gradient(0deg, rgba(15, 29, 25, 0.93), rgba(15, 29, 25, 0.5) 72%, rgba(15, 29, 25, 0.3)),
      linear-gradient(90deg, rgba(15, 29, 25, 0.7), rgba(15, 29, 25, 0.2));
  }

  .topbar {
    left: 1rem;
    right: 1rem;
    justify-content: center;
  }

  .hero__content {
    padding: 6.5rem 0 16rem;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 4.6rem);
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__panel {
    bottom: 1rem;
  }

  .overview,
  .strategy-grid,
  .day-tabs,
  .pin-grid {
    grid-template-columns: 1fr;
  }

  .timeline {
    padding-left: 0.9rem;
  }

  .timeline-item {
    grid-template-columns: 1fr auto;
    gap: 0.7rem;
  }

  .timeline-item time {
    grid-column: 1 / -1;
  }

  .details {
    grid-column: 1 / -1;
  }

  .details dl {
    grid-template-columns: 1fr;
  }
}