:root {
  --ink: #21342d;
  --muted: #68766f;
  --green: #244d3d;
  --green-soft: #e8f0eb;
  --paper: #f7f5ef;
  --card: #fff;
  --line: #dce3de;
  --accent: #c48749;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; line-height: 1.7; }
a { color: inherit; }
button, input { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20; padding: 10px 14px; border-radius: 10px; background: var(--ink); color: #fff; }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; padding: 12px max(20px, calc((100vw - 1120px) / 2)); border-bottom: 1px solid rgba(220,227,222,.9); background: rgba(247,245,239,.94); backdrop-filter: blur(12px); }
.brand { display: flex; align-items: baseline; gap: 9px; flex: 0 0 auto; text-decoration: none; font-family: Georgia, "Yu Mincho", serif; font-weight: 700; }
.brand small { color: var(--muted); font-family: inherit; font-size: 12px; letter-spacing: .08em; }
.site-nav { display: flex; gap: 5px; overflow-x: auto; scrollbar-width: thin; }
.site-nav a { flex: 0 0 auto; padding: 7px 10px; border-radius: 999px; color: var(--muted); font-size: 12px; font-weight: 700; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--green-soft); color: var(--green); }
.page-shell { width: min(100% - 40px, 960px); margin: 0 auto; padding: 28px 0 88px; }
.breadcrumbs { display: flex; align-items: center; gap: 7px; margin-bottom: 24px; color: var(--muted); font-size: 12px; }
.breadcrumbs a { text-underline-offset: 3px; }
.hero-panel { min-height: 410px; display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(28px,6vw,64px); overflow: hidden; border-radius: 32px; background: radial-gradient(circle at 84% 18%, rgba(196,135,73,.24), transparent 28%), linear-gradient(145deg,#173c30 0%,#315f4d 58%,#567866 100%); color: #fff; box-shadow: 0 22px 60px rgba(35,55,46,.14); }
.eyebrow { margin: 0 0 10px; font-size: 11px; font-weight: 800; letter-spacing: .16em; }
.hero-panel h1 { max-width: 760px; margin: 0; font-family: Georgia, "Yu Mincho", serif; font-size: clamp(2.25rem,7vw,4.8rem); font-weight: 600; letter-spacing: -.035em; line-height: 1.08; }
.lead { max-width: 680px; margin: 22px 0 0; color: rgba(255,255,255,.84); font-size: clamp(1rem,2vw,1.15rem); }
.phase-label { align-self: flex-start; margin: 30px 0 0; padding: 6px 10px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; color: rgba(255,255,255,.72); font-size: 10px; letter-spacing: .08em; }
.placeholder { display: grid; grid-template-columns: 80px 1fr; gap: 28px; margin-top: 56px; padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); }
.section-number { margin: 0; color: var(--accent); font-family: Georgia, serif; font-size: 2.2rem; }
.placeholder h2, .next-step h2, .trip-date-cta h2 { margin: 0; font-size: clamp(1.4rem,3vw,2rem); }
.placeholder h2 + p { margin: 12px 0 0; color: var(--muted); }
.data-status { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.data-status li { padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; background: var(--green-soft); color: var(--green); font-size: 12px; font-weight: 800; }
.next-step { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-top: 24px; padding: 30px 34px; border-radius: 24px; background: var(--green-soft); }
.next-step .eyebrow { color: var(--green); }
.next-step a { flex: 0 0 auto; padding: 13px 18px; border-radius: 999px; background: var(--green); color: #fff; font-size: 14px; font-weight: 800; text-decoration: none; }
.site-footer { padding: 38px max(20px,calc((100vw - 960px) / 2)); border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.site-footer p { margin: 3px 0; }

/* Phase 3 shared UI */
.v2-content { margin-top: 56px; padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); }
.v2-content__head { display: grid; grid-template-columns: 80px 1fr; gap: 28px; align-items: start; margin-bottom: 28px; }
.v2-content__head h2 { margin: 0; font-size: clamp(1.5rem,3vw,2.1rem); }
.v2-content__head p:not(.section-number) { margin: 10px 0 0; color: var(--muted); }
.decision-message { margin: 0 0 24px; padding: 18px 20px; border-left: 4px solid var(--accent); border-radius: 0 14px 14px 0; background: #fbf6ee; font-weight: 700; }
.decision-grid, .comparison-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.comparison-grid { align-items: start; }
.decision-card, .comparison-card { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.decision-card.is-recommended { border-color: rgba(36,77,61,.45); box-shadow: inset 0 0 0 1px rgba(36,77,61,.08); }
.decision-card__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.decision-card h3, .comparison-card h3, .route-timeline h3, .score-selector h3, .note-box h3, .booking-cta h3 { margin: 0; font-size: 1.15rem; }
.decision-card__badge { flex: 0 0 auto; padding: 4px 8px; border-radius: 999px; background: var(--green-soft); color: var(--green); font-size: 11px; font-weight: 800; }
.decision-card__summary, .comparison-card__verdict, .route-timeline__summary { margin: 10px 0 0; color: var(--muted); }
.comparison-card h4 { margin: 18px 0 6px; color: var(--green); font-size: .82rem; letter-spacing: .03em; }
.compact-list { margin: 8px 0 0; padding-left: 1.25em; }
.compact-list li + li { margin-top: 5px; }
.text-link { display: inline-block; margin-top: 16px; color: var(--green); font-weight: 800; text-underline-offset: 4px; }
.condition-switch { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 6px; padding: 5px; border: 1px solid var(--line); border-radius: 16px; background: #f1f3f0; }
.condition-switch__button { min-height: 46px; padding: 9px 14px; border: 0; border-radius: 12px; background: transparent; color: var(--muted); cursor: pointer; font-weight: 800; }
.condition-switch__button.is-active { background: var(--card); color: var(--green); box-shadow: 0 4px 14px rgba(33,52,45,.09); }
.condition-switch__button:focus-visible, .choice-chip:has(input:focus-visible) { outline: 3px solid rgba(196,135,73,.45); outline-offset: 2px; }
.score-selector { margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--line); }
.score-selector__choices { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 16px; }
.choice-chip { position: relative; display: inline-flex; align-items: center; gap: 7px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 999px; background: #fff; cursor: pointer; font-size: 13px; font-weight: 700; }
.choice-chip:has(input:checked) { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.choice-chip input { width: 16px; height: 16px; margin: 0; accent-color: var(--green); }
.score-result { margin-top: 16px; padding: 18px 20px; border-radius: 16px; background: var(--green-soft); }
.score-result__label { margin: 0; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.score-result strong { display: block; margin-top: 3px; font-size: 1.25rem; }
.score-result p:last-child { margin: 6px 0 0; color: var(--muted); }
.itinerary-controls { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-bottom: 24px; }
.itinerary-output { min-height: 140px; }
.route-timeline { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.route-day { margin-top: 22px; }
.route-day h4 { margin: 0 0 12px; color: var(--green); }
.route-steps { margin: 0; padding: 0; list-style: none; }
.route-step { position: relative; display: grid; grid-template-columns: 64px 1fr; gap: 14px; padding: 0 0 20px; }
.route-step:not(:last-child)::before { content: ""; position: absolute; left: 63px; top: 28px; bottom: 0; width: 1px; background: var(--line); }
.route-step__time { color: var(--accent); font-family: Georgia, serif; font-weight: 700; }
.route-step__body { position: relative; padding-left: 16px; }
.route-step__body::before { content: ""; position: absolute; left: -5px; top: .55em; width: 9px; height: 9px; border: 2px solid var(--green); border-radius: 50%; background: var(--card); }
.route-step__body p { margin: 5px 0 0; color: var(--muted); }
.trip-date-cta, .booking-cta, .note-box { margin-top: 24px; padding: 28px 30px; border-radius: 22px; }
.trip-date-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid var(--line); background: #fff; }
.trip-date-cta p:not(.eyebrow) { margin: 8px 0 0; color: var(--muted); }
.booking-cta { border: 1px solid #ead8c2; background: #fbf6ee; }
.booking-cta .eyebrow { color: #875a2e; }
.button-link { display: inline-block; flex: 0 0 auto; padding: 12px 17px; border-radius: 999px; background: var(--green); color: #fff; font-size: 14px; font-weight: 800; text-decoration: none; }
.note-box { border: 1px solid var(--line); background: #f8faf8; }
.note-box .compact-list { margin-top: 12px; }
.fact-item { padding: 14px 0; border-top: 1px solid var(--line); }
.fact-item:first-of-type { margin-top: 10px; }
.fact-item p { margin: 5px 0 0; color: var(--muted); }

@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 8px; padding-block: 12px; }
  .site-nav { width: 100%; }
  .page-shell { width: min(100% - 28px,960px); padding-top: 20px; }
  .hero-panel { min-height: 360px; border-radius: 24px; }
  .placeholder { grid-template-columns: 1fr; gap: 8px; padding: 26px; }
  .next-step, .trip-date-cta { align-items: flex-start; flex-direction: column; padding: 26px; }
  .next-step a, .trip-date-cta .button-link { width: 100%; text-align: center; }
  .v2-content { margin-top: 34px; padding: 22px; }
  .v2-content__head { grid-template-columns: 1fr; gap: 4px; }
  .decision-grid, .comparison-grid, .itinerary-controls { grid-template-columns: 1fr; }
  .decision-card, .comparison-card, .route-timeline { padding: 19px; }
  .score-selector__choices { flex-direction: column; }
  .choice-chip { width: 100%; border-radius: 14px; }
  .route-step { grid-template-columns: 54px 1fr; gap: 10px; }
  .route-step:not(:last-child)::before { left: 53px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }