:root {
  color-scheme: light;
  --ink: oklch(25% 0.02 242);
  --muted: oklch(48% 0.024 242);
  --faint: oklch(66% 0.022 242);
  --paper: oklch(96.8% 0.012 85);
  --paper-deep: oklch(93% 0.02 85);
  --panel: oklch(98.3% 0.006 85);
  --line: oklch(84% 0.018 85);
  --navy: oklch(32% 0.04 242);
  --navy-soft: oklch(38% 0.03 242);
  --brass: oklch(74% 0.1 78);
  --brass-soft: oklch(92% 0.04 78);
  --persimmon: oklch(67% 0.15 42);
  --sea: oklch(58% 0.09 198);
  --good: oklch(56% 0.12 155);
  --warn: oklch(69% 0.12 72);
  --bad: oklch(60% 0.14 30);
  --shadow: 0 18px 60px oklch(23% 0.025 242 / 0.11);
  --radius: 18px;
  --radius-sm: 12px;
  font-family: "Avenir Next", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, oklch(98% 0.016 86), transparent 34%),
    radial-gradient(circle at 85% 16%, oklch(94% 0.03 76), transparent 22%),
    linear-gradient(180deg, oklch(95.6% 0.02 85), var(--paper) 360px);
  font-size: 16px;
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(oklch(80% 0.01 242 / 0.08) 1px, transparent 1px),
    linear-gradient(90deg, oklch(80% 0.01 242 / 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  mask-image: linear-gradient(180deg, black, transparent 72%);
}

a {
  color: inherit;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button,
.button {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  padding: 0 18px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: transform 180ms ease-out, background 180ms ease-out, border-color 180ms ease-out;
}

button:hover,
.button:hover {
  background: oklch(94.5% 0.02 85);
  border-color: oklch(78% 0.024 85);
}

button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.46;
  cursor: not-allowed;
  background: oklch(97.3% 0.008 85);
  color: var(--muted);
}

button:disabled:hover,
.button[aria-disabled="true"]:hover {
  background: oklch(97.3% 0.008 85);
  border-color: var(--line);
}

button:active,
.button:active {
  transform: translateY(1px);
}

.primary {
  background: var(--navy);
  border-color: var(--navy);
  color: oklch(98.6% 0.006 85);
}

.primary:hover {
  background: var(--navy-soft);
  border-color: var(--navy-soft);
}

.ghost {
  background: transparent;
}

button:focus-visible,
.button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid oklch(76% 0.08 205 / 0.42);
  outline-offset: 2px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid oklch(84% 0.018 85 / 0.82);
  background: oklch(97.5% 0.01 85 / 0.88);
  backdrop-filter: blur(16px);
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  width: 214px;
  height: 40px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--brass-soft);
  color: var(--ink);
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 72px;
  position: relative;
}

.page-hero,
.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 28px;
  align-items: start;
}

.home-hero {
  min-height: calc(100vh - 110px);
  padding-top: 10px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--navy-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

h1 {
  font-size: clamp(2.9rem, 6vw, 5.4rem);
  max-width: 10ch;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: 1.2rem;
}

.lede {
  max-width: 64ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-copy {
  display: grid;
  gap: 18px;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.signal-row,
.fact-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.signal {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: oklch(97.6% 0.01 85 / 0.92);
  border: 1px solid var(--line);
}

.signal strong,
.fact strong {
  display: block;
  font-size: 1.5rem;
  font-family: "Iowan Old Style", Georgia, serif;
}

.signal span,
.fact span {
  color: var(--muted);
  font-size: 0.95rem;
}

.map-panel,
.checker-panel,
.sheet,
.list-shell,
.tool-shell,
.detail-shell {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.map-panel {
  min-height: 420px;
  padding: 22px;
  display: grid;
  gap: 18px;
  background:
    radial-gradient(circle at top right, oklch(92% 0.035 72), transparent 28%),
    linear-gradient(180deg, oklch(98.5% 0.01 85), oklch(97% 0.01 85));
}

.route-labels {
  display: grid;
  gap: 14px;
  margin-top: auto;
}

.route-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  width: fit-content;
  border-radius: 999px;
  background: oklch(96.5% 0.012 85);
  border: 1px solid var(--line);
  color: var(--navy);
  font-size: 0.94rem;
}

.route-pill::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--persimmon);
  box-shadow: 0 0 0 4px oklch(92% 0.05 42 / 0.35);
}

.stamp {
  width: fit-content;
  padding: 7px 12px;
  border: 1px solid oklch(77% 0.05 55);
  border-radius: 999px;
  color: var(--navy);
  background: oklch(96% 0.02 80);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section {
  margin-top: 72px;
  display: grid;
  gap: 18px;
}

.section-copy {
  max-width: 68ch;
}

.tool-shell {
  overflow: hidden;
}

.tool-head {
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  background: oklch(95.8% 0.017 85);
}

.tool-head p {
  margin: 6px 0 0;
  color: var(--muted);
}

.tool-body {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
}

.form-panel,
.result-panel {
  padding: 22px;
}

.form-panel {
  border-right: 1px solid var(--line);
  display: grid;
  gap: 16px;
}

.result-panel {
  display: grid;
  gap: 14px;
  background: linear-gradient(180deg, oklch(98.8% 0.006 85), oklch(95.6% 0.015 85));
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 6px;
}

.full-span {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.9rem;
  color: var(--muted);
}

.field small {
  color: var(--faint);
  font-size: 0.8rem;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  color: var(--ink);
}

textarea {
  min-height: 128px;
  padding: 12px 14px;
  resize: vertical;
}

.toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle-group button[aria-pressed="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: oklch(98.6% 0.006 85);
}

.checkbox-line {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.checkbox-line input {
  width: 18px;
  min-height: 18px;
  margin-top: 3px;
  padding: 0;
}

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

.check-item {
  min-height: 46px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: oklch(98.7% 0.006 85);
}

.check-item input {
  width: 18px;
  min-height: 18px;
  margin: 0;
  padding: 0;
}

.result-card {
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: oklch(99% 0.004 85 / 0.94);
}

.result-card .label {
  display: block;
  color: var(--muted);
  margin-bottom: 8px;
}

.result-card strong {
  font-size: 1.45rem;
  font-family: "Iowan Old Style", Georgia, serif;
}

.result-card ul,
.result-card ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.arrival-sections {
  display: grid;
  gap: 12px;
}

.arrival-block {
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: oklch(99% 0.004 85 / 0.94);
}

.arrival-block h4 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.arrival-block ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.copy-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.copy-feedback {
  margin: 0;
  color: var(--muted);
}

.preview-card {
  padding: 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: oklch(99% 0.004 85 / 0.98);
  display: grid;
  gap: 12px;
}

.preview-card-zh {
  background:
    radial-gradient(circle at top right, oklch(95% 0.03 76), transparent 35%),
    oklch(98.8% 0.007 85);
}

.preview-eyebrow {
  color: var(--navy-soft);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.preview-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.preview-lines {
  display: grid;
  gap: 8px;
}

.preview-lines p,
.preview-contact {
  margin: 0;
}

.preview-contact {
  color: var(--muted);
  font-size: 0.95rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 700;
  background: oklch(95% 0.02 85);
}

.status-pill::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--sea);
}

.status-pill.good {
  color: oklch(34% 0.08 155);
  background: oklch(95% 0.04 150);
}

.status-pill.good::before {
  background: var(--good);
}

.status-pill.warn {
  color: oklch(42% 0.09 72);
  background: oklch(95% 0.05 78);
}

.status-pill.warn::before {
  background: var(--warn);
}

.status-pill.bad {
  color: oklch(42% 0.1 30);
  background: oklch(94% 0.05 34);
}

.status-pill.bad::before {
  background: var(--bad);
}

.note-box,
.source-box {
  padding: 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: oklch(97.5% 0.012 85 / 0.92);
}

.note-box ul,
.source-box ul,
.text-grid ul,
.cluster-list ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

.split-grid,
.text-grid,
.tool-grid,
.country-grid,
.cluster-grid,
.faq-grid,
.story-grid {
  display: grid;
  gap: 18px;
}

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

.tool-grid,
.country-grid,
.cluster-grid,
.faq-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.utility-tile,
.faq-tile,
.country-tile,
.cluster-tile {
  padding: 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: oklch(98.5% 0.006 85);
  text-decoration: none;
}

.utility-tile p,
.faq-tile p,
.country-tile p,
.cluster-tile p,
.text-grid p,
.story-grid p {
  margin: 8px 0 0;
  color: var(--muted);
}

.list-shell {
  overflow: hidden;
}

.list-toolbar {
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  background: oklch(95.8% 0.017 85);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-pills button[aria-pressed="true"] {
  background: var(--brass-soft);
  border-color: oklch(82% 0.05 76);
}

.country-list {
  display: grid;
  gap: 0;
}

.country-row {
  padding: 18px 22px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 110px 140px 1.2fr;
  gap: 16px;
  border-top: 1px solid oklch(87% 0.014 85);
  align-items: start;
}

.country-row:first-child {
  border-top: 0;
}

.country-row small {
  color: var(--faint);
}

.tag {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  background: var(--brass-soft);
  color: var(--navy);
}

.tag.navy {
  background: oklch(93% 0.02 242);
}

.detail-shell {
  padding: 22px;
  display: grid;
  gap: 14px;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline-step {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
}

.timeline-step .step-index {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  color: oklch(98.6% 0.006 85);
  font-weight: 700;
}

.calculator-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.fact {
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: oklch(98.5% 0.006 85);
}

.helper-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.plain-copy {
  max-width: 70ch;
}

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px 40px;
  color: var(--muted);
}

.site-footer .foot {
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.site-footer a {
  color: inherit;
}

@media (max-width: 980px) {
  .home-hero,
  .page-hero,
  .tool-body,
  .helper-grid,
  .split-grid,
  .story-grid {
    grid-template-columns: 1fr;
  }

  .form-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .tool-grid,
  .country-grid,
  .cluster-grid,
  .faq-grid,
  .signal-row,
  .fact-strip,
  .calculator-metrics,
  .checklist-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .country-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  main {
    padding-inline: 16px;
  }

  .nav {
    padding-inline: 16px;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
  }

  .field-grid,
  .tool-grid,
  .country-grid,
  .cluster-grid,
  .faq-grid,
  .signal-row,
  .fact-strip,
  .calculator-metrics,
  .checklist-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: none;
  }
}