:root {
  color-scheme: light;
  --page: #ffffff;
  --ink: #172434;
  --muted: #7b838c;
  --line: #e9e9ef;
  --panel: #ffffff;
  --soft: #f7f5fa;
  --accent: #9449a1;
  --accent-soft: #f4eaf6;
  --accent-line: rgba(148, 73, 161, 0.22);
  --navy: #172a40;
  --success: #dff7ea;
  --warning: #fff4d7;
  --shadow: 0 16px 38px rgba(23, 36, 52, 0.12);
  --shadow-soft: 0 8px 22px rgba(23, 36, 52, 0.08);
  --radius: 8px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--page);
  color: var(--ink);
}

body {
  background:
    linear-gradient(180deg, #ffffff 0%, #ffffff 48%, #fbf9fc 100%);
}

button {
  border: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(148, 73, 161, 0.35);
  outline-offset: 3px;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background:
    linear-gradient(135deg, rgba(148, 73, 161, 0.18), rgba(23, 42, 64, 0.08)),
    #f4f1f6;
}

.app-shell {
  width: min(100%, 760px);
  min-height: 100vh;
  margin: 0 auto;
  background: #ffffff;
}

body.locked .app-shell {
  min-height: 100vh;
}

body.locked .content {
  min-height: calc(100vh - 72px);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 0.75rem;
  align-items: center;
  min-height: 72px;
  padding: 0.9rem 1.25rem;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(233, 233, 239, 0.86);
  backdrop-filter: blur(16px);
}

.topbar h1,
.hero h2,
.section h2,
.card h3,
.panel h3,
.timeline-item h3 {
  margin: 0;
  letter-spacing: 0;
}

.topbar h1 {
  font-size: clamp(1.55rem, 6vw, 2.15rem);
  line-height: 1.04;
  font-weight: 850;
}

.eyebrow,
.card-meta,
.detail-hero p,
.kicker {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.icon-button {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #ffffff;
  color: var(--ink);
  font-size: 1.15rem;
  font-weight: 800;
  box-shadow: var(--shadow-soft);
}

.hidden {
  visibility: hidden;
}

.content {
  min-height: calc(100vh - 152px);
  padding: 1rem 1.05rem 6.4rem;
}

.hero {
  position: relative;
  overflow: visible;
  margin: -1rem -1.05rem 1.35rem;
  padding-bottom: 1.1rem;
  background: #ffffff;
}

.hero-media {
  position: relative;
  height: clamp(250px, 58vw, 390px);
  overflow: hidden;
  border-radius: 0 0 32px 32px;
  background: var(--navy);
}

.hero-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, rgba(23, 36, 52, 0.1), rgba(23, 36, 52, 0.58));
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
  margin: -56px 1.1rem 0;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.hero h2 {
  font-size: clamp(2rem, 9vw, 3.65rem);
  line-height: 0.98;
  font-weight: 850;
}

.hero p,
.card p,
.panel p,
.callout p,
.timeline-item p {
  color: var(--muted);
  line-height: 1.48;
}

.hero p {
  margin: 0.75rem 0 0;
  max-width: 42rem;
  font-size: 1.02rem;
}

.hero-chips,
.tag-row,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-chips {
  margin-top: 1rem;
}

.chip,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}

.chip {
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
}

.tag {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--muted);
}

.section {
  margin-top: 1.45rem;
}

.section h2 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.8rem;
  font-size: clamp(1.32rem, 5vw, 1.8rem);
  line-height: 1.1;
  font-weight: 850;
}

.section h2 i {
  color: var(--accent);
  font-size: 0.9em;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.split {
  display: grid;
  gap: 1rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.itinerary-list {
  display: grid;
  gap: 1.15rem;
}

.small-gap {
  gap: 0.55rem;
}

.card,
.panel,
.line-card,
.notice,
.callout {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.card {
  display: grid;
  overflow: hidden;
}

.thumb {
  position: relative;
  height: clamp(170px, 42vw, 250px);
  border-bottom: 1px solid var(--line);
}

.day-card-ribbon {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 0.9rem;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 10px 22px rgba(20, 25, 35, 0.22);
}

.day-card-ribbon::after {
  width: 0;
  height: 0;
  margin-left: 0.55rem;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 8px solid rgba(255, 255, 255, 0.9);
  content: "";
}

.card-body,
.panel-body {
  padding: 1.15rem;
}

.card h3,
.panel h3 {
  font-size: clamp(1.25rem, 5vw, 1.75rem);
  line-height: 1.12;
  font-weight: 850;
}

.card p,
.panel p {
  margin: 0.55rem 0 0;
}

.place-line {
  color: var(--accent) !important;
  font-weight: 800;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.45rem;
}

.primary-button,
.secondary-button,
.text-button,
.quick-button {
  min-height: 46px;
  border-radius: var(--radius);
  font-weight: 850;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  width: 100%;
  margin-top: 0.85rem;
  background: var(--navy);
  color: #ffffff;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.primary-button.accent-button {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 12px 26px rgba(148, 73, 161, 0.25);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0 0.95rem;
  border: 1px solid var(--accent-line);
  background: var(--accent);
  color: #ffffff;
}

.text-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-width: 76px;
  padding: 0 0.7rem;
  background: transparent;
  color: var(--accent);
}

.button-row {
  margin-top: 0.95rem;
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1.05rem;
}

.quick-button {
  display: grid;
  gap: 0.35rem;
  min-height: 78px;
  place-items: center;
  padding: 0.55rem 0.25rem;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
  box-shadow: var(--shadow-soft);
}

.quick-button span,
.nav-icon {
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 900;
}

.quick-button span {
  width: 34px;
  height: 34px;
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-icon i,
.quick-button i {
  font-size: 1rem;
}

.panel {
  overflow: hidden;
}

.panel-media {
  height: clamp(170px, 40vw, 250px);
  border-bottom: 1px solid var(--line);
}

.detail-hero {
  position: relative;
  display: grid;
  min-height: clamp(310px, 68vw, 440px);
  overflow: hidden;
  border-radius: 0 0 32px 32px;
  margin: -1rem -1.05rem 0;
  color: #ffffff;
  background: var(--navy);
}

.detail-hero img {
  position: absolute;
  inset: 0;
}

.detail-hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, rgba(23, 36, 52, 0.2), rgba(23, 36, 52, 0.74));
}

.detail-hero > div {
  position: relative;
  z-index: 1;
  align-self: end;
  padding: 1.4rem 1.25rem 2rem;
}

.detail-hero h2 {
  font-size: clamp(2rem, 8vw, 3.4rem);
  line-height: 1.02;
  font-weight: 850;
}

.detail-hero p {
  color: rgba(255, 255, 255, 0.86);
}

.detail-hero .tag {
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
}

.itinerary-hero {
  position: relative;
  display: grid;
  min-height: clamp(330px, 72vw, 470px);
  overflow: hidden;
  border-radius: 0 0 32px 32px;
  margin: -1rem -1.05rem 0;
  color: #ffffff;
  background: var(--navy);
}

.itinerary-hero img {
  position: absolute;
  inset: 0;
}

.itinerary-hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, rgba(23, 36, 52, 0.1), rgba(23, 36, 52, 0.76));
}

.itinerary-hero > div {
  position: relative;
  z-index: 1;
  align-self: end;
  padding: 1.35rem 1.25rem 2rem;
}

.itinerary-hero h2 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(3rem, 14vw, 5.4rem);
  line-height: 0.98;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.itinerary-hero h3 {
  margin: 0.45rem 0 0;
  color: rgba(255, 255, 255, 0.94);
  font-size: clamp(1.25rem, 5vw, 1.75rem);
  line-height: 1.15;
}

.itinerary-hero p {
  margin: 0.55rem 0 0;
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.48;
}

.itinerary-hero .tag {
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
}

.day-ribbon {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 1.05rem;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.22);
}

.day-ribbon::after {
  width: 0;
  height: 0;
  margin-left: 0.65rem;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 9px solid rgba(255, 255, 255, 0.85);
  content: "";
}

.timeline {
  display: grid;
  gap: 0.85rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 0.85rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.timeline-item > span {
  color: var(--accent);
  font-weight: 900;
}

.timeline-item p {
  margin: 0.35rem 0 0;
}

.line-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 1rem;
}

.place-line-card {
  align-items: stretch;
  flex-wrap: wrap;
}

.line-card-main {
  min-width: 0;
}

.line-card strong,
.line-card span,
.line-card small {
  display: block;
}

.line-card strong {
  font-size: 1.02rem;
  line-height: 1.25;
}

.line-card span,
.line-card small {
  margin-top: 0.28rem;
  color: var(--muted);
  line-height: 1.35;
}

.place-accordion {
  margin-top: 0.9rem;
  border: 1px solid rgba(148, 73, 161, 0.22);
  border-radius: var(--radius);
  background: #ffffff;
}

.place-accordion.compact {
  flex: 0 0 min(100%, 148px);
  align-self: center;
  margin-top: 0;
}

.place-accordion.compact[open] {
  flex-basis: 100%;
}

.place-accordion summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 42px;
  padding: 0 0.85rem;
  color: var(--accent);
  font-weight: 900;
  cursor: pointer;
  list-style: none;
}

.place-accordion summary::-webkit-details-marker {
  display: none;
}

.place-accordion summary span {
  display: inline;
  margin-top: 0;
  color: var(--accent);
}

.place-accordion summary i {
  font-size: 0.78rem;
  transition: transform 0.18s ease;
}

.place-accordion[open] summary {
  border-bottom: 1px solid var(--line);
}

.place-accordion[open] summary i {
  transform: rotate(180deg);
}

.place-accordion-body {
  display: grid;
  gap: 0.85rem;
  padding: 0.95rem;
}

.place-accordion-body > p {
  margin: 0;
  color: var(--ink);
  line-height: 1.5;
}

.mini-info {
  display: grid;
  gap: 0.35rem;
}

.mini-info strong {
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mini-info p,
.mini-info ul {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.mini-info ul {
  display: grid;
  gap: 0.35rem;
  padding-left: 1rem;
}

.itinerary-stop strong {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.itinerary-stop strong i {
  color: var(--accent);
}

.nested {
  box-shadow: none;
  background: #faf7fb;
}

.detail-grid {
  display: grid;
  gap: 0;
  margin: 0.85rem 0;
}

.detail-grid div,
.detail-list div {
  display: grid;
  grid-template-columns: minmax(98px, 0.36fr) 1fr;
  gap: 0.65rem;
  padding: 0.72rem 0;
  border-top: 1px solid var(--line);
}

.detail-grid dt,
.detail-list strong {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-grid dd,
.detail-list span {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--ink);
}

.subsection {
  margin-top: 1rem;
}

.subsection h4 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
}

.phrase-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 1rem;
}

.phrase-copy span,
.phrase-copy small {
  color: var(--muted);
}

.phrase-copy p {
  margin: 0.3rem 0;
  color: var(--ink);
  font-weight: 850;
}

.phrase-copy h3 {
  margin: 0;
  color: var(--accent);
  font-size: 1.42rem;
}

.chinese {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
}

.clean-list {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.clean-list li {
  padding: 0.82rem 0.95rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  line-height: 1.42;
  box-shadow: var(--shadow-soft);
}

.empty,
.notice {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.notice {
  padding: 0.9rem;
  border-color: #f0dfaa;
  background: var(--warning);
  color: #72530e;
}

.bottom-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  width: min(100%, 760px);
  min-height: 74px;
  margin: 0 auto;
  padding: 0.45rem max(0.55rem, env(safe-area-inset-left)) calc(0.45rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
  box-shadow: 0 -12px 28px rgba(23, 36, 52, 0.08);
}

.nav-item {
  position: relative;
  display: grid;
  gap: 0.12rem;
  place-items: center;
  min-width: 0;
  min-height: 58px;
  border-radius: var(--radius);
  background: transparent;
  color: #8a9198;
  font-size: 0.72rem;
  font-weight: 800;
}

.nav-icon {
  width: 29px;
  height: 29px;
  border: 1px solid transparent;
  background: transparent;
}

.nav-item.active {
  color: var(--ink);
}

.nav-item.active::before {
  position: absolute;
  top: -0.45rem;
  width: 54px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent);
  content: "";
}

.nav-item.active .nav-icon {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 5.5rem;
  left: 1rem;
  z-index: 30;
  max-width: 560px;
  margin: 0 auto;
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
  background: var(--navy);
  color: white;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 180ms ease, transform 180ms ease;
  pointer-events: none;
}

.unlock-screen {
  display: grid;
  min-height: calc(100vh - 112px);
  place-items: center;
  padding: 1.25rem 0 2.5rem;
}

.unlock-panel {
  display: grid;
  gap: 0.9rem;
  width: min(100%, 420px);
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.unlock-mark {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.25rem;
}

.unlock-panel h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.3rem, 12vw, 4.1rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.unlock-panel p {
  margin: 0;
}

.unlock-form {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.2rem;
}

.unlock-form label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.unlock-form input {
  width: 100%;
  min-height: 48px;
  padding: 0 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  font: inherit;
}

.unlock-form input:focus {
  border-color: var(--accent);
  outline: 3px solid rgba(148, 73, 161, 0.16);
}

.unlock-form button:disabled {
  opacity: 0.7;
  cursor: wait;
}

.unlock-error {
  min-height: 1.4em;
  color: #9b1c31;
  font-weight: 750;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.loading {
  height: 24px;
  margin-bottom: 0.75rem;
  border-radius: var(--radius);
  background: linear-gradient(90deg, #f2eef5, #ffffff, #f2eef5);
}

.loading.short {
  width: 62%;
}

.loading.tall {
  height: 260px;
}

@media (max-width: 560px) {
  .content {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .hero {
    margin-right: -1rem;
    margin-left: -1rem;
  }

  .itinerary-hero {
    margin-right: -1rem;
    margin-left: -1rem;
  }

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

  .timeline-item,
  .detail-grid div,
  .detail-list div {
    grid-template-columns: 1fr;
  }

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

@media (min-width: 760px) {
  body {
    background: #f7f5fa;
  }

  .app-shell {
    box-shadow: 0 0 0 1px var(--line), 0 28px 70px rgba(23, 36, 52, 0.1);
  }

  .content {
    padding: 1.25rem 1.35rem 6.4rem;
  }

  .hero {
    margin-right: 0;
    margin-left: 0;
  }

  .itinerary-hero {
    margin-right: 0;
    margin-left: 0;
  }

  .hero-media,
  .detail-hero,
  .itinerary-hero {
    border-radius: 8px;
  }

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