:root {
  --ink: #18201f;
  --muted: #5a6663;
  --line: #d5ddda;
  --paper: #fff;
  --mist: #f3f6f4;
  --teal: #0f635c;
  --teal-dark: #0a4742;
  --yellow: #f0c74b;
  --yellow-soft: #fff7d8;
  --coral: #b74f3c;
  --coral-soft: #fff0ec;
  --blue-soft: #edf4f8;
  --shadow: 0 10px 30px rgba(24,32,31,.09);
  --radius: 6px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--mist); font-family: Inter, "Noto Sans JP", system-ui, sans-serif; line-height: 1.6; letter-spacing: 0; }
button, input, select, textarea { font: inherit; }
button, select, input, textarea { letter-spacing: 0; }
a { color: var(--teal-dark); }
[hidden] { display: none !important; }
.app-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(8px); }
.app-header-inner, main, footer { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }
.app-header-inner { min-height: 64px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand-lockup { display: flex; gap: 10px; align-items: center; color: var(--ink); text-decoration: none; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; color: #fff; background: var(--teal); border-radius: var(--radius); font-weight: 850; }
.brand-lockup strong, .brand-lockup small { display: block; }
.brand-lockup small { color: var(--muted); font-size: .72rem; }
.header-actions { display: flex; align-items: center; gap: 16px; font-size: .84rem; }
.status-pill, .chat-mode, .version-badge { display: inline-flex; padding: 4px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--paper); font-size: .76rem; font-weight: 750; }
main { padding: 38px 0 72px; }
.planner-intro { display: grid; grid-template-columns: minmax(0,1fr) 320px; align-items: end; gap: 40px; padding: 24px 0 28px; }
.eyebrow { margin: 0 0 6px; color: var(--teal); font-size: .76rem; font-weight: 850; text-transform: uppercase; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { max-width: 780px; margin: 0; font-size: clamp(2.1rem, 4.5vw, 4.4rem); line-height: 1.08; }
h2 { margin: 0; font-size: clamp(1.6rem, 2.7vw, 2.5rem); line-height: 1.2; }
h3 { margin: 0; font-size: 1.15rem; }
.planner-intro > div > p:last-child { max-width: 760px; margin: 14px 0 0; color: var(--muted); }
.trust-note { padding: 16px; border-left: 4px solid var(--teal); background: var(--paper); }
.trust-note strong, .trust-note span { display: block; }
.trust-note span { margin-top: 4px; color: var(--muted); font-size: .85rem; }
.wizard, .result-shell { border: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }
.wizard-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding: 26px 28px 20px; }
.progress-copy { width: 210px; color: var(--muted); font-size: .8rem; }
.progress-copy span { display: block; margin-bottom: 5px; text-align: right; }
progress { width: 100%; height: 8px; accent-color: var(--teal); }
.step-nav { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.step-nav-item { min-height: 52px; display: flex; align-items: center; justify-content: center; gap: 9px; border: 0; border-right: 1px solid var(--line); color: var(--muted); background: var(--mist); cursor: pointer; }
.step-nav-item:last-child { border-right: 0; }
.step-nav-item span { width: 24px; height: 24px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); font-size: .78rem; }
.step-nav-item.active { color: var(--teal-dark); background: #e9f5f2; font-weight: 800; }
.step-nav-item:disabled { cursor: default; opacity: .65; }
.wizard-step { min-height: 440px; padding: 30px 28px; }
.step-heading { max-width: 720px; margin-bottom: 28px; }
.step-heading p:last-child { margin: 8px 0 0; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; align-content: start; gap: 7px; }
.field > span, legend, .chat-form label { font-weight: 800; }
.field input, .field select, .chat-form textarea { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); background: var(--paper); }
.field small, fieldset > small { color: var(--muted); }
fieldset { min-width: 0; margin: 24px 0 0; padding: 0; border: 0; }
legend { margin-bottom: 10px; }
.segmented { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.segmented.choices-4 { grid-template-columns: repeat(4, 1fr); }
.segmented.vertical { grid-template-columns: 1fr; }
.segmented label, .experience-grid label { position: relative; }
.segmented input, .experience-grid input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span, .experience-grid label > span { min-height: 48px; display: flex; align-items: center; padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); cursor: pointer; font-weight: 700; }
.segmented input:checked + span, .experience-grid input:checked + span { color: var(--teal-dark); border-color: var(--teal); background: #e9f5f2; box-shadow: inset 4px 0 0 var(--teal); }
.segmented input:focus-visible + span, .experience-grid input:focus-visible + span { outline: 3px solid rgba(15,99,92,.25); outline-offset: 2px; }
.experience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.experience-grid label > span { min-height: 72px; display: grid; align-content: center; }
.experience-grid small { display: block; color: var(--muted); font-weight: 500; }
.selection-count { margin: 10px 0 0; color: var(--muted); font-size: .82rem; }
.check-row { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.check-row label { display: flex; gap: 7px; align-items: center; }
.form-error { min-height: 28px; margin: 0; padding: 0 28px; color: var(--coral); font-weight: 800; }
.wizard-actions { display: flex; justify-content: flex-end; gap: 10px; padding: 20px 28px 26px; border-top: 1px solid var(--line); }
.button { min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: var(--radius); cursor: pointer; font-weight: 800; }
.button.primary { color: #fff; background: var(--teal); }
.button.primary:hover { background: var(--teal-dark); }
.button.secondary { color: var(--ink); border-color: var(--line); background: var(--paper); }
.result-shell { margin-top: 24px; }
.shared-plan-banner { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 16px 28px; border-bottom: 1px solid var(--line); background: #e9f5f2; }
.shared-plan-banner strong, .shared-plan-banner span { display: block; }
.shared-plan-banner span { color: var(--muted); font-size: .84rem; }
.share-panel { margin: 18px 28px 0; padding: 16px; border: 1px solid var(--line); background: var(--mist); }
.share-panel label { display: block; margin-bottom: 7px; font-weight: 800; }
.share-panel > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.share-panel input { min-width: 0; width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.share-panel small { display: block; margin-top: 6px; color: var(--muted); }
.result-topbar { display: flex; justify-content: space-between; align-items: start; gap: 24px; padding: 28px; border-bottom: 1px solid var(--line); }
.result-topbar p:last-child { margin: 8px 0 0; color: var(--muted); }
.result-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.icon-text-button { min-height: 38px; padding: 7px 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); cursor: pointer; font-size: .82rem; font-weight: 700; }
.icon-text-button:disabled { opacity: .45; cursor: default; }
.mobile-tabs { display: none; }
.warning-list { display: grid; gap: 8px; padding: 18px 28px 0; }
.warning { padding: 12px 14px; border-left: 4px solid var(--yellow); background: var(--yellow-soft); }
.warning.blocking { border-color: var(--coral); background: var(--coral-soft); }
.warning.info { border-color: var(--teal); background: #e9f5f2; }
.warning strong { display: block; font-size: .8rem; text-transform: uppercase; }
.warning p { margin: 3px 0 0; }
.diff-panel { display: grid; grid-template-columns: 260px 1fr; gap: 20px; margin: 18px 28px 0; padding: 18px; border: 1px solid var(--teal); background: #f2faf8; }
.diff-panel ul { margin: 0; }
.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(330px, .8fr); align-items: start; }
.plan-column { min-width: 0; padding: 28px; border-right: 1px solid var(--line); }
.chat-column { position: sticky; top: 84px; max-height: calc(100vh - 108px); display: flex; flex-direction: column; padding: 24px; overflow: auto; }
.summary-band { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 32px; }
.summary-band > div { padding-top: 12px; border-top: 3px solid var(--teal); }
.summary-band ul, .booking-checks ul { margin: 10px 0 0; padding-left: 20px; color: var(--muted); }
.section-title-row { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
.section-title-row > p { max-width: 420px; margin: 0; color: var(--muted); font-size: .85rem; }
.itinerary-list { display: grid; gap: 12px; }
.day-card { display: grid; grid-template-columns: 68px 1fr auto; gap: 18px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.day-number { color: var(--teal); font-size: .82rem; font-weight: 850; }
.day-card h4 { margin: 0; font-size: 1.05rem; }
.day-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 8px 0; color: var(--muted); font-size: .82rem; }
.activity-list { margin: 8px 0 0; padding-left: 18px; }
.fallback { margin: 12px 0 0; padding: 8px 10px; background: var(--blue-soft); font-size: .82rem; }
.intensity { min-width: 64px; align-self: start; padding: 5px 8px; border: 1px solid var(--line); border-radius: 999px; text-align: center; font-size: .75rem; font-weight: 800; }
.intensity.high { color: #8b3328; background: var(--coral-soft); }
.intensity.medium { color: #6a5410; background: var(--yellow-soft); }
.intensity.low { color: var(--teal-dark); background: #e9f5f2; }
.booking-checks { margin-top: 28px; padding: 18px; border-left: 4px solid var(--teal); background: var(--mist); }
.chat-head { display: flex; justify-content: space-between; gap: 16px; }
.chat-privacy { margin: 12px 0; color: var(--muted); font-size: .78rem; }
.chat-history { min-height: 180px; display: flex; flex-direction: column; gap: 8px; padding: 12px; border: 1px solid var(--line); background: var(--mist); overflow-y: auto; }
.chat-message { max-width: 92%; padding: 9px 11px; border-radius: var(--radius); background: var(--paper); font-size: .86rem; }
.chat-message.user { align-self: flex-end; color: #fff; background: var(--teal); }
.quick-actions { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0; }
.quick-actions button { padding: 6px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--teal-dark); background: var(--paper); cursor: pointer; font-size: .76rem; }
.chat-form { display: grid; gap: 7px; }
.chat-form textarea { resize: vertical; }
.chat-submit-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.chat-submit-row span { color: var(--muted); font-size: .75rem; }
.loading-state, .api-error { margin-top: 10px; padding: 10px; background: var(--mist); font-size: .82rem; }
.spinner { width: 14px; height: 14px; display: inline-block; margin-right: 8px; border: 2px solid var(--line); border-top-color: var(--teal); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }
.api-error { color: #8b3328; background: var(--coral-soft); }
.api-error p { margin: 0 0 6px; }
.api-error button { border: 0; color: #8b3328; background: transparent; text-decoration: underline; cursor: pointer; }
.recommendation-section { padding: 28px; border-top: 1px solid var(--line); }
.recommendation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.recommendation-empty { grid-column: 1 / -1; padding: 18px; border-left: 4px solid var(--coral); background: var(--coral-soft); font-weight: 750; }
.recommendation-card { display: flex; flex-direction: column; gap: 10px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); }
.recommendation-slot { color: var(--teal); font-size: .75rem; font-weight: 850; text-transform: uppercase; }
.product-kind { color: var(--muted); font-size: .78rem; }
.recommendation-card ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: .83rem; }
.recommendation-card .button { margin-top: auto; text-align: center; text-decoration: none; }
.test-feedback { display: grid; gap: 18px; padding: 28px; border-top: 1px solid var(--line); background: var(--mist); }
.test-feedback[hidden] { display: none; }
.test-feedback h3 { margin: 4px 0 6px; }
.test-feedback p { margin: 0; color: var(--muted); }
.feedback-options { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.feedback-options button, .clarity-question button { min-height: 44px; padding: 9px 11px; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); background: var(--paper); cursor: pointer; font-weight: 700; }
.feedback-options button[aria-pressed="true"], .clarity-question button[aria-pressed="true"] { color: #fff; border-color: var(--teal); background: var(--teal); }
.feedback-options button:disabled, .clarity-question button:disabled { cursor: default; }
.clarity-question { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.clarity-question > div { display: grid; grid-template-columns: repeat(2, minmax(88px, 1fr)); gap: 8px; }
.feedback-status { min-height: 20px; font-weight: 750; }
footer { display: flex; justify-content: space-between; gap: 30px; padding: 26px 0 40px; color: var(--muted); font-size: .8rem; }
footer p { margin: 3px 0 0; }
.footer-disclosure { max-width: 440px; align-self: end; color: var(--muted); font-size: .68rem; opacity: .78; text-align: right; }
.planning-guides { width: 100%; margin-top: 54px; border-top: 1px solid var(--line); background: #eef6f3; }
.planning-guides-inner { width: min(100% - 40px, 1120px); margin: 0 auto; padding: 42px 0 48px; }
.planning-guides-inner > div:first-child { max-width: 720px; }
.planning-guides-inner h2 { margin: 0 0 8px; font-size: 1.65rem; letter-spacing: 0; }
.planning-guide-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 22px; }
.planning-guide-links a { min-width: 0; padding: 15px; border: 1px solid #bfd1cc; border-radius: 6px; background: #fff; color: var(--ink); text-decoration: none; }
.planning-guide-links strong, .planning-guide-links span { display: block; overflow-wrap: anywhere; }
.planning-guide-links span { margin-top: 4px; color: var(--muted); font-size: .84rem; }
@media (max-width: 900px) {
  .planner-intro { grid-template-columns: 1fr; gap: 18px; }
  .workspace-grid { grid-template-columns: 1fr; }
  .plan-column { border-right: 0; }
  .chat-column { position: static; max-height: none; border-top: 1px solid var(--line); }
  .summary-band, .recommendation-grid { grid-template-columns: 1fr; }
  .planning-guide-links { grid-template-columns: 1fr 1fr; }
  .experience-grid { grid-template-columns: 1fr 1fr; }
  .feedback-options { grid-template-columns: 1fr 1fr; }
  .mobile-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
  .mobile-tabs button { min-height: 44px; border: 0; border-right: 1px solid var(--line); background: var(--mist); font-weight: 750; }
  .mobile-tabs button[aria-selected="true"] { color: var(--teal-dark); background: #e9f5f2; }
  [data-mobile-panel] { display: none; }
  [data-mobile-panel].mobile-active { display: block; }
}
@media (max-width: 620px) {
  .app-header-inner, main, footer { width: min(100% - 24px, 1240px); }
  .status-pill { display: none; }
  main { padding-top: 20px; }
  h1 { font-size: 2.25rem; }
  .wizard-head, .result-topbar, .section-title-row, footer { display: grid; }
  .footer-disclosure { text-align: left; }
  .progress-copy { width: 100%; }
  .progress-copy span { text-align: left; }
  .step-nav-item { font-size: .75rem; }
  .step-nav-item span { display: none; }
  .wizard-step, .plan-column, .chat-column, .recommendation-section { padding: 20px 16px; }
  .test-feedback { padding: 20px 16px; }
  .feedback-options { grid-template-columns: 1fr; }
  .clarity-question { align-items: stretch; display: grid; }
  .form-grid, .experience-grid, .segmented, .segmented.choices-4 { grid-template-columns: 1fr; }
  .wizard-actions { padding: 16px; }
  .wizard-actions .button { flex: 1; }
  .result-topbar { padding: 20px 16px; }
  .shared-plan-banner { display: grid; padding: 16px; }
  .share-panel { margin: 14px 16px 0; }
  .share-panel > div { grid-template-columns: 1fr; }
  .result-actions { justify-content: start; }
  .warning-list { padding: 14px 16px 0; }
  .diff-panel { grid-template-columns: 1fr; margin: 14px 16px 0; }
  .day-card { grid-template-columns: 1fr; gap: 8px; }
  .intensity { justify-self: start; }
  .planning-guide-links { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .spinner { animation: none; } }