:root {
  color-scheme: light;
  --paper: #f6f7f1;
  --surface: #fffef9;
  --surface-strong: #ffffff;
  --ink: #1f2426;
  --ink-soft: #66706d;
  --line: #cfd7d1;
  --line-strong: #1f2426;
  --teal: #097d77;
  --coral: #df6048;
  --gold: #d49b24;
  --leaf: #4f7654;
  --sky: #6aa5bb;
  --shadow: 0 24px 70px rgba(31, 36, 38, 0.14);
  --soft-shadow: 0 14px 34px rgba(31, 36, 38, 0.1);
  --radius: 8px;
  font-family: Inter, "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #eef4f0 0, var(--paper) 28rem, #f4f5ef 100%),
    var(--paper);
}

button,
input,
select {
  font: inherit;
}

button,
select {
  color: inherit;
}

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

.icon-defs {
  display: none;
}

.site-shell {
  width: min(1420px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
}

.topbar {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 900;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-strong);
}

.brand-mark svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.top-actions,
.action-strip {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switch {
  height: 38px;
  display: inline-grid;
  grid-template-columns: repeat(2, 46px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-strong);
}

.lang-button {
  border: 0;
  color: var(--ink-soft);
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 900;
}

.lang-button + .lang-button {
  border-left: 1px solid var(--line-strong);
}

.lang-button.active {
  color: #fff;
  background: var(--ink);
}

.icon-button,
.text-button,
.step-button {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-strong);
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.icon-button:hover,
.text-button:hover,
.step-button:hover {
  transform: translateY(-1px);
  box-shadow: var(--soft-shadow);
}

.icon-button:focus-visible,
.text-button:focus-visible,
.step-button:focus-visible,
.lang-button:focus-visible,
.toggle-chip:has(input:focus-visible),
input:focus-visible,
select:focus-visible,
.check-item input:focus-visible + .check-box {
  outline: 3px solid rgba(9, 125, 119, 0.25);
  outline-offset: 3px;
}

.icon-button {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
}

.icon-button svg,
.text-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.text-button {
  min-height: 42px;
  padding: 0 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 850;
}

.text-button.ghost {
  background: rgba(255, 255, 255, 0.5);
}

main {
  display: grid;
  gap: 18px;
  padding-bottom: 30px;
}

.route-hero {
  position: relative;
  min-height: clamp(260px, 34vw, 430px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: #dbe5e0;
}

.route-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 125, 119, 0.74), rgba(31, 36, 38, 0.24) 48%, rgba(31, 36, 38, 0.04)),
    linear-gradient(0deg, rgba(31, 36, 38, 0.36), transparent 55%);
}

.route-hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.route-hero-copy {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
  min-height: clamp(260px, 34vw, 430px);
  padding: clamp(24px, 5vw, 58px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 950;
}

.route-hero .eyebrow {
  color: #ffdf8a;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 12px;
  font-size: clamp(34px, 5.2vw, 68px);
  line-height: 1;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.08;
}

h3 {
  margin-bottom: 0;
  font-size: 18px;
}

#pageIntro {
  max-width: 670px;
  margin-bottom: 0;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.55;
}

.route-builder {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(255, 254, 249, 0.95);
  box-shadow: var(--shadow);
}

.builder-head {
  min-height: 108px;
  padding: clamp(18px, 3vw, 30px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 420px);
  gap: 18px;
  align-items: end;
  border-bottom: 1px solid var(--line-strong);
}

.route-status {
  min-height: 54px;
  padding: 14px 16px;
  align-self: stretch;
  display: flex;
  align-items: center;
  border-left: 5px solid var(--coral);
  background: #fff5ef;
  color: #57332b;
  font-size: 14px;
  line-height: 1.45;
  font-weight: 750;
}

.planner-form {
  display: grid;
  gap: 18px;
  padding: clamp(18px, 3vw, 30px);
}

.route-select-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
}

.location-stack {
  min-width: 0;
  margin: 0;
  padding: 16px;
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-top: 5px solid var(--teal);
  border-radius: var(--radius);
  background: #ffffff;
}

.destination-stack {
  border-top-color: var(--coral);
}

.location-stack legend,
.toggle-group legend {
  padding: 0 8px;
  font-weight: 900;
}

.select-row,
.field {
  min-width: 0;
  display: grid;
  gap: 7px;
}

label,
.select-row label {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 850;
}

input,
select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcf9;
  color: var(--ink);
  font-weight: 760;
}

select {
  padding: 0 38px 0 12px;
}

input {
  padding: 0 12px;
}

.route-connector {
  min-height: 100%;
  padding: 14px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(106, 165, 187, 0.18), rgba(212, 155, 36, 0.16)),
    #fbfcf9;
  text-align: center;
}

.route-connector span {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--surface-strong);
  color: var(--coral);
}

.route-connector svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.route-connector strong {
  max-width: 150px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.3;
}

.trip-controls {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 12px;
}

.stepper {
  height: 46px;
  display: grid;
  grid-template-columns: 42px minmax(56px, 1fr) 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fbfcf9;
}

.stepper input {
  min-height: 44px;
  border: 0;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-radius: 0;
  text-align: center;
  background: transparent;
}

.step-button {
  min-height: 44px;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: 20px;
  font-weight: 900;
}

.toggle-group {
  margin: 0;
  padding: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcf9;
}

.toggle-chip {
  min-height: 42px;
  padding: 0 13px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  color: var(--ink);
  font-size: 14px;
  font-weight: 820;
}

.toggle-chip input {
  width: 17px;
  min-height: 17px;
  accent-color: var(--teal);
}

.toggle-chip:has(input:checked) {
  border-color: var(--teal);
  background: #e8f5f2;
  color: #0f4e4a;
}

.insight-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
}

.insight-card {
  min-height: 106px;
  padding: 18px;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  align-content: center;
  gap: 14px;
  background: #fff;
}

.insight-card + .insight-card {
  border-left: 1px solid var(--line);
}

.insight-card:nth-child(1) {
  border-top: 5px solid var(--teal);
  background: linear-gradient(135deg, rgba(9, 125, 119, 0.1), #fff 58%);
}

.insight-card:nth-child(2) {
  border-top: 5px solid var(--coral);
  background: linear-gradient(135deg, rgba(223, 96, 72, 0.1), #fff 58%);
}

.insight-card:nth-child(3) {
  border-top: 5px solid var(--gold);
  background: linear-gradient(135deg, rgba(212, 155, 36, 0.12), #fff 58%);
}

.insight-card:nth-child(4) {
  border-top: 5px solid var(--sky);
  background: linear-gradient(135deg, rgba(106, 165, 187, 0.14), #fff 58%);
}

.insight-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  color: var(--teal);
  box-shadow: 0 10px 22px rgba(31, 36, 38, 0.08);
}

.duration-card .insight-icon {
  color: var(--coral);
}

.timezone-card .insight-icon {
  color: #946d16;
}

.weather-card .insight-icon {
  color: #3e8299;
}

.insight-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.insight-copy {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.insight-card span,
.summary-pill span,
.ad-slot span {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.insight-card strong {
  min-height: 32px;
  display: flex;
  align-items: center;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
  align-items: start;
}

.results-panel {
  min-width: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.result-header {
  min-height: 116px;
  padding: clamp(18px, 3vw, 30px);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
  border-bottom: 1px solid var(--line-strong);
}

.progress-badge {
  min-width: 104px;
  padding: 10px 12px;
  display: grid;
  justify-items: center;
  gap: 3px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #eff8f5;
}

.progress-badge strong {
  font-size: 24px;
}

.progress-badge span {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 900;
}

.summary-strip {
  padding: 16px clamp(18px, 3vw, 30px);
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 10px;
  border-bottom: 1px solid var(--line);
}

.summary-pill {
  min-width: 0;
  min-height: 64px;
  padding: 10px 12px;
  display: grid;
  gap: 5px;
  align-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcf9;
}

.summary-pill strong {
  min-width: 0;
  overflow-wrap: anywhere;
  line-height: 1.25;
}

.action-strip {
  padding: 16px clamp(18px, 3vw, 30px);
  border-bottom: 1px solid var(--line);
}

.ad-slot {
  position: relative;
  overflow: hidden;
  border: 1px dashed #9daaa3;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(9, 125, 119, 0.09), rgba(223, 96, 72, 0.08)),
    #fbfcf9;
}

.ad-slot::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(45deg, transparent 0, transparent 12px, rgba(31, 36, 38, 0.035) 12px, rgba(31, 36, 38, 0.035) 13px);
}

.ad-slot > * {
  position: relative;
  z-index: 1;
}

.ad-slot strong {
  font-size: 18px;
  line-height: 1.25;
}

.ad-slot p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.45;
}

.result-ad {
  min-height: 116px;
  margin: 0 clamp(18px, 3vw, 30px) 18px;
  padding: 18px;
  display: grid;
  gap: 6px;
  align-content: center;
}

.side-rail {
  position: sticky;
  top: 18px;
  display: grid;
  gap: 18px;
}

.rail-photo {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #dfe8e1;
  box-shadow: var(--soft-shadow);
  aspect-ratio: 4 / 5;
}

.rail-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.side-ad {
  min-height: 340px;
  padding: 20px;
  display: grid;
  gap: 8px;
  align-content: start;
}

.compact-ad {
  min-height: 190px;
}

.checklist {
  padding: 0 clamp(18px, 3vw, 30px) clamp(18px, 3vw, 30px);
  display: grid;
  gap: 20px;
}

.check-group {
  display: grid;
  gap: 12px;
}

.check-group + .check-group {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.check-group-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.check-group-header span {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 850;
}

.check-items {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.check-item {
  min-width: 0;
  min-height: 92px;
  padding: 13px;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcf9;
  cursor: pointer;
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.check-item:hover {
  border-color: var(--teal);
  transform: translateY(-1px);
  box-shadow: var(--soft-shadow);
}

.check-item input {
  position: absolute;
  width: 1px;
  min-height: 1px;
  opacity: 0;
  pointer-events: none;
}

.check-box {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 2px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
}

.check-box::after {
  content: "";
  width: 9px;
  height: 5px;
  display: none;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
}

.check-item input:checked + .check-box {
  border-color: var(--teal);
  background: var(--teal);
}

.check-item input:checked + .check-box::after {
  display: block;
}

.check-item:has(input:checked) {
  background: #eef8f5;
}

.item-copy {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.item-copy strong {
  min-width: 0;
  overflow-wrap: anywhere;
  line-height: 1.2;
}

.item-copy small {
  color: var(--coral);
  font-weight: 900;
}

.item-copy em {
  color: var(--ink-soft);
  font-size: 13px;
  font-style: normal;
  line-height: 1.35;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 10;
  max-width: min(420px, calc(100% - 32px));
  padding: 12px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow);
  transform: translate(-50%, 16px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.visible {
  transform: translate(-50%, 0);
  opacity: 1;
}

.footer {
  padding: 8px 0 28px;
  color: var(--ink-soft);
  text-align: center;
  font-size: 14px;
  font-weight: 760;
}

@media (max-width: 1120px) {
  .route-select-grid {
    grid-template-columns: 1fr;
  }

  .route-connector {
    min-height: 96px;
  }

  .trip-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content-layout {
    grid-template-columns: 1fr;
  }

  .side-rail {
    position: static;
    grid-template-columns: minmax(220px, 0.8fr) minmax(220px, 1fr) minmax(220px, 1fr);
  }

  .rail-photo {
    aspect-ratio: 16 / 10;
  }

  .side-ad {
    min-height: 220px;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 20px, 720px);
  }

  .topbar {
    min-height: auto;
    padding: 12px 0;
    align-items: start;
  }

  .brand {
    max-width: 48%;
  }

  .top-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .text-button {
    min-height: 38px;
    padding: 0 12px;
  }

  .route-hero,
  .route-hero-copy {
    min-height: 300px;
  }

  .route-hero-copy {
    padding: 22px;
  }

  h1 {
    font-size: clamp(32px, 11vw, 48px);
  }

  .builder-head {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .route-status {
    min-height: 50px;
  }

  .trip-controls,
  .insight-strip,
  .summary-strip,
  .check-items,
  .side-rail {
    grid-template-columns: 1fr;
  }

  .insight-card + .insight-card {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .result-header {
    flex-direction: column;
  }

  .progress-badge {
    width: 100%;
    justify-items: start;
  }

  .action-strip {
    flex-wrap: wrap;
  }

  .rail-photo {
    aspect-ratio: 16 / 11;
  }
}

@media (max-width: 460px) {
  .language-switch {
    grid-template-columns: repeat(2, 42px);
  }

  .brand {
    max-width: 44%;
  }

  #brandTitle {
    overflow-wrap: anywhere;
  }

  .route-builder,
  .results-panel,
  .route-hero {
    border-radius: 6px;
  }

  .location-stack,
  .toggle-group,
  .summary-pill,
  .check-item,
  .ad-slot {
    border-radius: 6px;
  }
}

@media print {
  body {
    background: #fff;
  }

  .topbar,
  .route-hero,
  .route-builder,
  .action-strip,
  .ad-slot,
  .side-rail,
  .footer,
  .toast {
    display: none !important;
  }

  .site-shell,
  .content-layout,
  .results-panel {
    width: 100%;
    display: block;
    border: 0;
    box-shadow: none;
  }

  .check-items {
    grid-template-columns: 1fr;
  }
}